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Copyright 2005 Carrier Corporation Form 16LJ-1PD
Carrier-Sanyo’s 16LJ single-effect hermetic absorption liquid chiller is an efficient and functional alternative to traditional electric driven chillers. The 16LJ absorption chiller uses low tem-perature hot water as its energy source; as it eliminates the need for high cost electricity, it may qualify for financial incentives as a gas cooling product. The 16LJ absorption chiller offers functional flexibility in a variety of installations:• no CFCs; environmentally sound• single stage design for simple,
dependable operation• high reliability with few moving parts• nominal coefficient of performance
(COP) of .70• quiet, vibration-free operation• Direct Digital Controls (DDC) for
optimum chiller performance
Features/BenefitsSingle-effect absorption cycle provides efficient, economical water chilling with minimal use of electricity.Cost-effective coolingAlternative-energy chiller — The 16LJ chiller is a solution for building owners who want to avoid high operat-ing costs associated with electric-driven chillers. Powered by low temperature hot water, the Carrier-Sanyo 16LJabsorption chiller reduces or eliminates electric demand and/or ratchetcharges while allowing the owner to take advantage of gas cooling incen-tives when offered by local utilitycompanies.
16LJSingle-Effect,
Low Temperature Hot WaterHermetic Absorption
Liquid Chiller75 to 525 Nominal Tons
ProductData
2
Simple, reliable operation — The 16LJ chiller’s single generator provides one stage of solution reconcentration, which makes the 16LJ chiller one of the most basic cycles currently avail-able. The 16LJ chiller’s simple design, in addition to its other quality features, equates to inherently high reliability. Few moving parts and simple, depend-able operation reduce downtime, as well as service and maintenance costs. Exceptional efficiency — The 16LJ chiller offers full-load COPs of .70 at standard ARI (Air Conditioning and Refrigeration Institute) operating con-ditions. The 16LJ chiller provides effi-cient performance for a low tempera-ture hot water absorber. Incorporated into the standard machine design is a solution heat exchanger, intended to preheat the weak lithium bromide solu-tion being pumped to the generator by precooling the strong solution from the generator. Superior part-load performance — The concentration control system of the 16LJ chiller allows stable, part-load operation at cooling water tempera-tures as low as 64 F exclusive of the need for a cooling tower bypass. A con-trol valve integral to the machine guar-antees stable, continuous refrigerant pump operation at part-load conditions. The 16LJ chiller has a continuous operating range from 100% to 10% of rated machine capacity.
Application versatilityDesigned for a variety of applica-tions — Specifically designed for use with low temperature hot water, the 16LJ chiller can be applied to a variety of cooling needs. Waste heat from industrial processes and/or cogenera-tion systems can be used to provide chilled water for process cooling, as well as comfort cooling, thus reducing the need for additional energy and contributing to greater overall energy savings.Ideal for new or retrofit applica-tions — From replacement or expan-sion of existing chiller systems to new construction projects, the 16LJ chiller is capable of meeting the needs of almost any cooling application. Fifteen model sizes, with a capacity range of 75 to 525 tons, make the 16LJsingle-effect absorption chiller the ulti-mate choice for comfort cooling and/or light industrial applications.
Computerized performance ratings al-low the appropriately sized machine to be selected in order to meet exact job requirements. All machine selections are rated in accordance with the latest edition of ARI-560.Combine absorption and electric-driven chillers — Utilizing both absorption and electric chillers in a central plant offers the flexibility to base load one chiller, while using the other to handle peak load require-ments. Hybrid chiller systems have proven to be an economical solution for many chilled water plants. In many geographical areas, operating the electric chiller as the base loaded machine while using the absorption chiller during peak load conditions provides the most economical operat-ing cost scenario. The reverse may also be true, depending on utility rate structures and other job specifics. Either way, a 16LJ single-effect absorption chiller used in conjunction with an electric-driven chiller may be the most efficient and cost-effective combination available.
Location and installation savingsEase of installation — All machines are completely fabricated, assembled, wired and tested in the factory assingle-piece units. Units are customari-ly shipped in one piece for all model sizes, but shipment in multiple sections is available, making the 16LJ chiller ideal for retrofit or replacement instal-lations where equipment room access may be limited. Re-assembly of the chiller at the jobsite, if required, is both straightforward and simple due to special provisions made to the
machine during the factory fabrication and sectioning process.Small footprint — Compared to other single-effect chillers, the 16LJ chiller is significantly smaller in overall physical size and weight, saving valu-able space in the equipment room as well as reducing the rigging and instal-lation cost of the machine.Flanged waterbox nozzles — All 16LJ chillers incorporate ANSI (American National Standards Institute) raised face flanges as standard on all external piping connections, simplify-ing chiller installation and field piping. Low sound and vibration levels allow location flexibility — Absorp-tion chillers are distinguishable by their low sound and vibration levels, primari-ly because the only rotating parts are the refrigerant and absorbent pumps. The overall sound level of the Carrier-Sanyo 16LJ chiller is typically 80 dbA, therefore the machine may easily be installed near occupied spaces or in ar-eas with strict sound requirements. Low vibration levels also make it possi-ble to install the chiller on upper floors without special consideration for vibra-tion dampening systems.
Microprocessor control features/benefitsEach 16LJ single-effect chiller in-cludes a pre-programmed, factory-mounted and factory-wired control panel, which is functionally tested prior to shipment. Chiller monitoring and control is automatic and continuous, and the screen on the front panel dis-plays chiller operational status and fault indications in English or metric units.
Features/Benefits (cont)
Table of contentsPage
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Machine Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-20Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-24Typical Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-30
3
The Carrier-Sanyo microprocessor PID (proportional, integral, derivative) control system surpasses proportional only control systems by maintaining pre-cise leaving chilled water temperature versus actual set point. The PID controls surpass proportional only controls in their ability to control the machine and narrow temperature variations. The 16LJ chiller control system also incor-porates the ability to control the chilled water and cooling water pumps auto-matically. During shutdown these pumps are sequenced to ensure a com-plete dilution cycle, thus providing pro-tection from solution crystallization.
Leaving chilled water temperature is measured every 5 seconds by the con-trol system. Hot water input to the generator is then adjusted according to the degree of deviation of actual leav-ing chilled water temperature versus set point. System temperatures, set points and operational records are dis-played on the front of the panel along with various indicator lights that repre-sent chiller operational status. A purge status light on the panel indicates when noncondensables need to be exhausted from the external purge storage cham-ber via the purge pump.
The Carrier-Sanyo 16LJ chiller’s control system automatically performs self-diagnostic checks by constantly monitoring the chiller’s operational status and will automatically shut down the machine if a fault occurs. The cause of shut down will be retained in the controller’s memory and can be displayed for immediate operator review. The controller’s memory will also retain and display the cause of the last three system fault conditions, which is extremely useful for maintain-ing an accurate record of unit perfor-mance and fault history.
Local or remote operation of the 16LJ chiller can be done by configura-tion of the controls during initial setup.Single point electrical connection — Installation costs are reduced by eliminating the need for field wiring be-tween machine components. All elec-trical items, including the unit-mounted purge pump, are factory-wired to the chiller control center and require a sin-gle point electrical connection to the machine from the building’s electrical service. A control power transformer mounted in the chiller panel provides secondary single-phase control power.
Low maintenanceDurable machine construction — Each Carrier-Sanyo 16LJ chiller is constructed to meet rigorous manufac-turing and design requirements in an ISO-9002 and ISO-14001 certified facility. Furthermore, every machine meets strict Underwriters’ Laboratories (UL) certification requirements and is UL listed. The 16LJ chiller offers numerous features as part of its standard design to provide dependable operation. Corrosion-proof stainless steel dispersion trays ensure continu-ous, reliable operation, free from blockage often characteristic of alternative designs. The evaporator, absorber and condenser tubesheets and waterboxes are epoxy painted to resist rust and corrosion. Also, every machine is furnished with a rupture disk to protect against an overpressure condition on the shellside. These standard design and construction features mean that every 16LJ single-effect chiller is built to withstand the most rigorous duty, whether applied for comfort cooling service or light process applications.Leakproof hermetic pumps with isolation valves cut maintenance costs — The 16LJ chiller’s absorbent and refrigerant pump/motor assem-blies have a leakproof, self-contained and hermetically sealed design. The hermetic construction eliminates the need for a separate, complicated, and possibly leakprone seal water system and auxiliary water piping, while providing leak tightness and longer machine life. Specially designed bearings absorb both radial and axial thrusts to ensure correct fit at all times. Concerns about external contamination are eliminated since the fluid being pumped lubricates and cools the pump and motor assemblies. In addition, both the rotor and stator are separated by a stainless steel liner that protects the windings from the fluid being handled. Thermal overload switches are embed-ded in the stator as an additional safety feature. This feature protects against high winding temperature. The pumps are field serviceable and inspection is recommended after 25,000 hours or3 years of continuous operation. Isola-tion valves, a standard feature on the suction and discharge of the absorbent and refrigerant pumps, allow easy ac-cess for service and maintenance.
Waterbox design simplifies main-tenance procedures — Every 16LJ chiller is provided with numerous standard design features that permit convenient and simple maintenance to be carried out quickly. Hinged or removable waterbox covers on the evaporator, absorber, and condenser facilitate tube and waterbox inspection and/or cleaning from either end of the machine. In addition, the absorber and condenser sections are furnished as standard with marine waterboxes for easy access without having to disas-semble water piping.Factory-trained service organiza-tion — In addition to routine mainte-nance and repair services, Carrier also offers a wide array of preventative maintenance, full maintenance, and/or extended service contracts which can be custom-tailored to fulfill any service requirements. Carrier’s extensive service organization offers trained and experienced service technicians in every major city.Superior corrosion protection — All absorption chillers must be protect-ed from the corrosion that occurs on internal machine surfaces when in contact with lithium bromide solution. The 16LJ absorption chiller includes an extremely effective corrosion inhibitor to provide an extra margin of protection against internal corrosion. Other inhibitors may need exotic tube materials in certain heat exchangers as they are less effective and require more frequent maintenance and analysis. The superior corrosion protection of the Carrier-Sanyo inhibitor allows the use of standard copper tubes throughout the machine, which results in long machine life and dependable operation.
Automatic purge extends machine life, ensures optimum efficiency and performanceThe purge system on an absorption chiller is essential to ensuring long machine life and efficient operation. All absorption chillers operate in a vacuum and generate hydrogen (and other noncondensable gases) in small quantities, even when they are vacuum tight and properly inhibited. If not properly controlled, these gases can interfere with machine operation, therefore it is imperative that they be removed to protect against internal
4
corrosion, lithium bromide solution crystallization, and/or reduction of chiller capacity. The Carrier-Sanyo purge system protects against these potential hazards by operating continu-ously during machine operation.How the purge system operates — During chiller operation, any noncon-densables that are present tend to accumulate in the absorber section, which operates at the lowest pressure internal to the machine. A slipstream of lithium bromide solution flows through an eductor from the absorbent pump discharge. This process creates suction, which draws the noncondens-ables from the absorber, entraining them with the solution flowing through the eductor. The eductor discharges the solution and noncondensables into the purge tank, where the noncondens-ables are separated from the solution. The noncondensables remain in the purge tank while the lithium bromide solution returns to the absorber sump. As noncondensables accumulate in the external purge tank, they are isolated from the chiller and cannot re-enter the chiller even during shutdown. A heated palladium cell connected to the storage chamber aids in elimination of hydro-gen from the purge tank at all times. A unit-mounted purge pump further aids in removing noncondensables from the purge tank, when necessary.Anticrystallization controls main-tain proper solution concentration — The 16LJ chiller automatically limits solution concentration in several ways to avoid both crystallization and overdilu-tion to provide dependable, trouble-free operation. Crystallization of the lithium
bromide solution depends on the combi-nation of temperature and concentra-tion. The Carrier-Sanyo concentration control system automatically monitors solution concentration by continuously sensing the temperature of the strong solution and the refrigerant condensa-tion temperature. From this data, the microprocessor controls are able todetermine the solution concentration and automatically limit the heat input to the chiller, if necessary, to prevent an overconcentration condition fromoccurring. Constant monitoring of the cycle ensures continuous, reliable opera-tion even at cooling water temperatures as low as 64 F. Upon shutdown, the chiller dilution cycle is automatically con-trolled to an optimized period ranging from 6 to 15 minutes by the micropro-cessor controls in conjunction with the generator solution temperature. This optimized dilution operation period en-ables energy savings of the onboard chiller pumps as well as the chilled water and cooling water pumps. The dilution cycle also minimizes the time required for chiller start-up by preventing overdil-ution of the solution.
16LJ single-effect absorption cooling cycleThe 16LJ single-effect absorption chiller is comprised of an evaporator, absorber, condenser, hot water generator, solution heat exchanger, refrigerant/absorbent pumps, purge, controls, and auxiliaries. Water is used as the refrigerant in ves-sels maintained under low absolute pres-sure (vacuum).
The chiller operates on the principle that under vacuum, water boils at a low
temperature (approximately 40 F), thereby cooling the chilled water circulating through the tubes of the evaporator. A refrigerant pump is used to circulate the refrigerant water over the evaporator tubes to enhance the heat transfer process. The refrigerant vapor is removed as it is produced in order to make the cooling process continuous. A lithium bromide solution (which has a high affinity for water) is used to absorb the water vapor. As this process continues, the lithium bromide becomes diluted, which reduces its absorption ability. An absorbent pump then transfers this weak (diluted) solution to the genera-tor, where it is reconcentrated by the introduction of hot water in the tubes of the generator to boil off the previ-ously absorbed water. The water vapor released on the shellside of the genera-tor enters the condenser to be cooled and returned to a liquid state. At this point, the refrigerant water returns to the evaporator to begin a new cycle. To remove heat from the machine, rel-atively cool water from a cooling tower or other source is circulated through the tubes of the absorber to remove the heat of vaporization. This same water is then circulated through the tubes of the condenser. The strong (re-concentrated) solution from the gener-ator flows back to the absorber to be-gin a new cycle. For efficiency, the strong solution from the generator is passed through a solution heat ex-changer to preheat the weak solution while precooling the strong solution before returning to the absorber.
Features/Benefits (cont)
5
Condenser
Generator
Absorber
Heat ExchangerCooling Water
Chilled Water
Evaporator
Cooling Water
Hot Water
16LJ ABSORPTION CHILLER COOLING CYCLE
6
Options and accessoriesITEM FACTORY-INSTALLED
OPTIONFIELD-INSTALLED
ACCESSORYCooling Water Flow Switch XHigh-Pressure Waterboxes, 300 psig XHot Water Control Valve XIsolation Package XMarine Waterboxes XShipping Configuration (1-piece or 2-piece) XSpecial Tubing XVictaulic Nozzle Connections XThermometer Set X
Model number nomenclature
16
16 – Hermetic Absorption Chiller
LJ 11
LJ – Single Effect, Low Temperature Hot Water (1-Stage)
Unit Size – Nominal Tons11 – 7512 – 9013 – 11014 – 13521 – 15522 – 18023 – 21024 – 240
31 – 27032 – 30041 – 33542 – 37551 – 42052 – 47053 – 525
→
609
7
Machine components
CONDENSER
GENERATOR
CHILLED WATER OUTLET
CHILLED WATER INLET
EVAPORATOR
COOLING WATER INLET
ABSORBER
HEAT EXCHANGER
CONTROL PANEL
HOT WATER OUITLET
HOT WATER INLET
8
UNIT 16LJ 11 12 13 14 21NOMINAL COOLING CAPACITY (ton) 75 90 110 135 155RIGGING WEIGHT (lb) 7,800 8,000 10,000 10,400 12,600OPERATING WEIGHT (lb) 8,900 9,300 11,500 12,200 14,800LITHIUM BROMIDE SOLUTION CHARGE (lb) 950 950 1,240 1,370 1,660REFRIGERANT (WATER) CHARGE (lb) 130 130 220 200 240CHILLED WATER
Pipe Connection Size (in.) 3 3 4 4 5No. of Passes 5 5 3 3 3
COOLING WATERPipe Connection Size (in.) 5 5 5 5 6No. of Passes
Absorber 4 4 4 4 4Condenser 2 2 2 2 2
HOT WATERPipe Connection Size (in.) 4 4 4 4 5No. of Passes 6 4 4 4 4
UNIT 16LJ 22 23 24 31 32NOMINAL COOLING CAPACITY (ton) 180 210 240 270 300RIGGING WEIGHT (lb) 13,300 15,500 16,100 19,900 20,800OPERATING WEIGHT (lb) 15,700 18,100 19,200 23,400 24,500LITHIUM BROMIDE SOLUTION CHARGE (lb) 1,790 2,170 2,360 2,720 2,960REFRIGERANT (WATER) CHARGE (lb) 260 330 310 420 370CHILLED WATER
Pipe Connection Size (in.) 5 5 5 6 6No. of Passes 3 3 3 3 3
COOLING WATERPipe Connection Size (in.) 6 8 8 8 8No. of Passes
Absorber 4 2 2 2 2Condenser 2 2 2 2 2
HOT WATERPipe Connection Size (in.) 5 6 6 6 6No. of Passes 4 3 3 3 3
UNIT 16LJ 41 42 51 52 53NOMINAL COOLING CAPACITY (ton) 335 375 420 470 525RIGGING WEIGHT (lb) 23,900 24,700 33,300 36,200 38,900OPERATING WEIGHT (lb) 28,500 29,600 40,200 43,500 46,600LITHIUM BROMIDE SOLUTION CHARGE (lb) 3,440 3,710 4,300 4,790 5,340REFRIGERANT (WATER) CHARGE (lb) 550 510 570 640 680CHILLED WATER
Pipe Connection Size (in.) 8 8 8 8 8No. of Passes 3 3 3 2 2
COOLING WATERPipe Connection Size (in.) 10 10 12 12 12No. of Passes
Absorber 2 2 4 2 2Condenser 2 2 2 2 2
HOT WATERPipe Connection Size (in.) 8 8 8 8 8No. of Passes 3 3 3 3 3
Physical data
9
Dimensions
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Dimensions (cont)
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16LJ
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16LJ
22
12
Dimensions (cont)
te ltuo W
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HC
WT
H/W
HC
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TH
.n i 6
te ltuo W
TH
. ni 6
teln i W
OC
.ni 8
teln i W
HC
.ni 5
teltu o W
HC
.ni 5
tel tuo W
OC
. ni 8
lavomer ebu
T
0
)W(85
.ni 2ksi
DerutpuR
0
0
93(H)
)L(291
WO
Cteltuo/telni
0
8/ 5- 32 R
00
noitcennoc eriW
8/7-76
35 8/5- 93
8/3-0 948 8/7 -32
4/3 -47
4/1-19
4/3-11
10-5/87-1/2
42-7/841-7/8
telni maet
S
16-7/8
162-3/8
9-7/88-5/8
8 3/
48 2
7/8
3
8/5-9
8/3- 93
161-1/4
153
46-1/8
7/86
3/4
3
8 71
eloh .ni 8/3 -1
22-3/8
LEG
EN
D
AN
SI
—A
mer
ican
Nat
iona
l Sta
ndar
ds In
stitu
teC
HW
—C
hille
d W
ater
CO
W—
Coo
ling
Wat
erH
TW
—H
ot W
ater
NO
TE
S:
1.D
imen
sion
s ar
e sh
own
in in
ches
.2.
Dim
ensi
ons
(L),
(W
), (
H)
are
for
stan
dard
mac
hine
.
3.in
dica
tes
the
posi
tion
of a
ncho
r bo
lts.
4.F
or r
outin
e m
aint
enan
ce a
llow
3 ft
cle
aran
ce o
n al
l sid
es a
nd8
in. a
bove
chi
ller.
5.F
or tu
be r
emov
al c
lear
ance
, ref
er to
dra
win
g.6.
Sta
ndar
d w
ater
pip
ing
conn
ectio
ns a
re A
NS
I 150
lb fl
ange
s.7.
Pas
s qu
antit
y an
d no
zzle
loca
tions
are
for
stan
dard
mac
hine
;ot
her
conf
igur
atio
ns a
re a
vaila
ble.
16LJ
23 A
ND
16LJ
24
13
167-7/8161-7/8
teltuo W
OC
teltuo W
TH
WH
Cte ln i
te ln i W
TH
teltuo W
HC
te lni W
OC
8/7-8
45-1/8
151
18
10-1/4
11
0 3/
84
8/ 5- 32 R
871
2 1/
2
4/1 -34
00
l av omer ebu
T
eloh
.ni 8 /3-1 noit cennoc eri
W
0
46-1/8
9-1/2
2/1-574/3-47
104(H)8/1-201
)W(06
4/3-11
4/ 1-0018/ 1-39
8/1- 85
24 42
45-1/2
00
0
teltuo W
TH
.ni 3ksi
D erutpuR
0 0
11-1/410-7/810-5/8
)L(791
8 3/
89 2
1/8
3 0
tel ni W
TH
. ni 6
teltuo W
TH
.ni 6
t el ni W
OC
. ni 8
t elni W
HC
.ni 6
tel tuo W
HC
.ni 6
te ltuo W
OC
.ni 8
173-7/8
LEG
EN
D
AN
SI
—A
mer
ican
Nat
iona
l Sta
ndar
ds In
stitu
teC
HW
—C
hille
d W
ater
CO
W—
Coo
ling
Wat
erH
TW
—H
ot W
ater
NO
TE
S:
1.D
imen
sion
s ar
e sh
own
in in
ches
.2.
Dim
ensi
ons
(L),
(W
), (
H)
are
for
stan
dard
mac
hine
.
3.in
dica
tes
the
posi
tion
of a
ncho
r bo
lts.
4.F
or r
outin
e m
aint
enan
ce a
llow
3 ft
cle
aran
ce o
n al
l sid
es a
nd8
in. a
bove
chi
ller.
5.F
or tu
be r
emov
al c
lear
ance
, ref
er to
dra
win
g.6.
Sta
ndar
d w
ater
pip
ing
conn
ectio
ns a
re A
NS
I 150
lb fl
ange
s.7.
Pas
s qu
antit
y an
d no
zzle
loca
tions
are
for
stan
dard
mac
hine
;ot
her
conf
igur
atio
ns a
re a
vaila
ble.
16LJ
31 A
ND
16LJ
32
14
Dimensions (cont)
0
t elni W
TH
.ni 8
telt uo W
TH
.ni 8
t elni W
OC
.ni 0 1
telni W
HC
.ni 8
t el tuo W
HC
.ni 8
telt uo W
OC
.ni 01
noitcennoc e riW
10-7/8
48-1/849-3/8
0
113(H)
eloh .ni 8/3-1
)W(4 6
.ni 3ksi
D e rutp uR
te ltuo W
TH
0
WH
Ctelni
teltuo W
TH
WO
C/telni
teltuoW
HC
teltuo W
TH
telni
0
0
0
0
lavomer ebu
T
8/3 -38
8/3-0 11
8/1-20 1
2/1-36
54 4/3-2 2
4/3-4 7
8/7-11 1
4 /3 -11
11-7/8
21-7/828-5/8
10-5/8
162-7/8
9 1/
201 2
1/4
3
)L(891
2/1 -9
4 /1 -54
161-1/4
151
45-1/8
3 3/
44 2 0
871
R2 35-8/
LEG
EN
D
AN
SI
—A
mer
ican
Nat
iona
l Sta
ndar
ds In
stitu
teC
HW
—C
hille
d W
ater
CO
W—
Coo
ling
Wat
erH
TW
—H
ot W
ater
NO
TE
S:
1.D
imen
sion
s ar
e sh
own
in in
ches
.2.
Dim
ensi
ons
(L),
(W
), (
H)
are
for
stan
dard
mac
hine
.
3.in
dica
tes
the
posi
tion
of a
ncho
r bo
lts.
4.F
or r
outin
e m
aint
enan
ce a
llow
3 ft
cle
aran
ce o
n al
l sid
es a
nd8
in. a
bove
chi
ller.
5.F
or tu
be r
emov
al c
lear
ance
, ref
er to
dra
win
g.6.
Sta
ndar
d w
ater
pip
ing
conn
ectio
ns a
re A
NS
I 150
lb fl
ange
s.7.
Pas
s qu
antit
y an
d no
zzle
loca
tions
are
for
stan
dard
mac
hine
;ot
her
conf
igur
atio
ns a
re a
vaila
ble.
16LJ
41 A
ND
16LJ
42
15
.ni 3ksi
D erutpuR
00
0
0
0
00
noitcennoc eriW
lavomer ebu
T
telni W
TH
.ni 8
teltuo W
TH
.ni 8
telni W
OC
.ni 21
telni W
HC
.ni 8
teltuo W
HC
.ni 8
teltuo W
OC
.ni 21
teltuo W
TH
teltuo W
TH
WO
C/telni
teltuo
WH
Cteltuo
WT
H/W
HC
telni
4/3-19
611
4/1-96
8/1-64
8/5-52
4/1-421
15-1/8
9-7/8
66 7/8
4/3-47
2/1-321
4/3-11
)W(77
126(H)
26-3/4
14-5/8
0
2 7/
821
8/5-43
2/1-5
36
40-1/2
5-1/8 eloh .ni 8/3-1
R23-5/8
4/3-71
5 1/
25 6
3/4
DC
BA
K
L
FE
LEG
EN
D
AN
SI
—A
mer
ican
Nat
iona
l Sta
ndar
ds In
stitu
teC
HW
—C
hille
d W
ater
CO
W—
Coo
ling
Wat
erH
TW
—H
ot W
ater
NO
TE
S:
1.D
imen
sion
s ar
e sh
own
in in
ches
.2.
Dim
ensi
ons
(L),
(W
), (
H)
are
for
stan
dard
mac
hine
.
3.in
dica
tes
the
posi
tion
of a
ncho
r bo
lts.
4.F
or r
outin
e m
aint
enan
ce a
llow
3 f
t cl
eara
nce
on a
ll si
des
and
8 in
.ab
ove
chill
er.
5.F
or tu
be r
emov
al c
lear
ance
, ref
er to
dra
win
g.6.
Sta
ndar
d w
ater
pip
ing
conn
ectio
ns a
re A
NS
I 150
lb fl
ange
s.7.
Pas
s qu
antit
y an
d no
zzle
loc
atio
ns a
re f
or s
tand
ard
mac
hine
; ot
her
conf
igur
atio
ns a
re a
vaila
ble.
UN
IT16
LJ
AB
CD
EF
KL
5114
51/ 8
151
1583
/ 416
61/ 2
331 /
216
05/ 8
182
205
5216
71/ 4
1723
/ 818
018
77/ 8
331 /
218
220
522
653
1867
/ 819
219
95/ 8
2071
/ 233
1 /2
2015
/ 822
524
6
16LJ
51-5
3
16
Dimensions (cont)A
BB
DC
EF
G
J
K
AA
BB
6
A
BB
DC
EF
G
J
K
AA
BB
6
NO
TE
S:
1.D
imen
sion
s ar
e sh
own
in in
ches
.2.
The
ba
se
of
the
mac
hine
ha
s2-
in.
diam
eter
ho
le
for
anch
orbo
lt.3.
Anc
hor
bolts
sho
uld
be f
ixed
as
show
n in
de
taile
d fo
unda
tion
draw
ings
. W
ashe
r sh
ould
be
wel
ded
to b
ase.
4.D
rain
ditc
h ar
ound
the
fou
nda-
tion
is r
equi
red.
5.S
urfa
ce o
f fo
unda
tion
shou
ld b
efla
t with
in ±
1 /4
in. p
er 2
0 ft.
6.A
ncho
r bo
lts,
was
hers
and
nut
sar
e su
pplie
d by
cus
tom
er.
FOU
ND
ATIO
N
UN
IT 1
6LJ
WE
IGH
T (
lb)
DIM
EN
SIO
NS
(in
.)A
AB
BA
BC
DE
FG
JK
114,
450
4,45
074
5 /8
71/ 4
37/ 8
141 /
831
1 /2
57/ 8
431 /
461
/ 435
3 /8
124,
650
4,65
074
5 /8
71/ 4
37/ 8
141 /
831
1 /2
57/ 8
431 /
461
/ 435
3 /8
135,
750
5,75
011
43/ 4
71/ 4
37/ 8
141 /
831
1 /2
57/ 8
431 /
461
/ 435
3 /8
146,
100
6,10
011
43/ 4
71/ 4
37/ 8
141 /
831
1 /2
57/ 8
431 /
461
/ 435
3 /8
217,
400
7,40
011
27/ 8
77/ 8
37/ 8
153 /
439
3 /8
57/ 8
511 /
877
/ 843
1 /4
227,
850
7,85
011
27/ 8
77/ 8
37/ 8
153 /
439
3 /8
57/ 8
511 /
877
/ 843
1 /4
239,
050
9,05
015
377
/ 837
/ 815
3 /4
393 /
857
/ 851
1 /8
77/ 8
431 /
4
249,
600
9,60
015
377
/ 837
/ 815
3 /4
393 /
857
/ 851
1 /8
77/ 8
431 /
4
3111
,700
11,7
0015
187
/ 837
/ 817
3 /4
431 /
457
/ 855
1 /8
97/ 8
471 /
4
3212
,250
12,2
5015
187
/ 837
/ 817
3 /4
431 /
457
/ 855
1 /8
97/ 8
471 /
4
4114
,250
14,2
5015
187
/ 837
/ 817
3 /4
451 /
457
/ 857
1 /8
97/ 8
491 /
4
4214
,800
14,8
0015
187
/ 837
/ 817
3 /4
451 /
457
/ 857
1 /8
97/ 8
491 /
4
5120
,100
20,1
0014
57/ 8
51/ 8
71/ 2
201 /
863
71/ 8
771 /
897
/ 866
7 /8
5221
,750
21,7
5016
71/ 4
51/ 8
71/ 2
201 /
863
71/ 8
771 /
897
/ 866
7 /8
5323
,300
23,3
0018
67/ 8
51/ 8
71/ 2
201 /
863
71/ 8
771 /
897
/ 866
7 /8
16
LJ11
-42
16LJ
51-5
3
17
NOTE: Ratings are based on ARI 560-2000: 44 F chilled water, 2.4 gpm/ton, .0001 ft2-hr-F/Btu fouling factor85 F cooling water, 3.6 gpm/ton, .00025 ft2-hr-F/Btu fouling factor 203 F hot water, 2.19 gpm/ton, .0001 ft2-hr-F/Btu fouling factor
Part-load performancePart-load performance energy requirements for the 16LJchiller, ranging from 10% to 100% of full load, can beobtained by contacting a local sales office.
All performance data is rated in accordance with ARI560, latest edition, which defines Integrated Part LoadValue (IPLV) as a measure of part-load efficiency represent-ing the weighted average of overall chiller performancecalculated by the following equation:IPLV = .01A + .42B + .45C + .12D where A = COP (Coefficient of Performance) at 100% B = COP at 75% C = COP at 50% D = COP at 25% or minimum load
UNIT 16LJ 11 12 13 14 21 22 23 24COOLING CAPACITY (Ton) 75 90 110 135 155 180 210 240CHILLED WATER Flow Rate (gpm) 180 216 264 324 372 432 504 576 Pressure Drop (ft) 18.3 20.1 11.9 13.1 11.7 12.3 24.8 26.5COOLING WATER Flow Rate (gpm) 270 324 396 486 558 648 756 864 Pressure Drop (ft) 12.2 12.9 21.8 26.1 36.0 23.4 34.5 35.3HOT WATER Flow Rate (gpm) 164 197 241 296 339 394 460 526 Pressure Drop (ft) 10.3 4.0 9.9 10.8 10.1 10.1 9.9 10.1
UNIT 16LJ 31 32 41 42 51 52 53COOLING CAPACITY (Ton) 270 300 335 375 420 470 525CHILLED WATER Flow Rate (gpm) 648 720 804 900 1008 1128 1260 Pressure Drop (ft) 25.4 26.9 25.1 25.0 20.6 10.8 14.1COOLING WATER Flow Rate (gpm) 972 1080 1206 1350 1512 1692 1890 Pressure Drop (ft) 32.4 32.9 33.0 34.3 31.3 29.4 39.1HOT WATER Flow Rate (gpm) 591 657 734 821 920 1029 1150 Pressure Drop (ft) 9.7 9.6 9.4 9.5 9.3 12.4 16.3
Performance data
18
Range of applicationThe 16LJ single-effect hot water absorption chiller is de-signed for standard water chilling applications of 75 to525 tons at standard ARI rating conditions. In most appli-cations, the minimum leaving chilled water temperature islimited to 41 F. The minimum continuous inlet watertemperature to the absorber-condenser circuit is 64 F,although lower temperatures are permitted during machinestart-up. Use of a cooling tower bypass is required if watertemperatures are anticipated to be less than this value.
UL certificationAll 16LJ chillers have met the necessary design and con-struction qualifications for certification per Underwriters’Laboratories. Each machine carries a UL listing and islabeled accordingly.
Vent and drain connectionsVent and drain connections are found on each waterbox.Provide a vent on the high points of all water piping and adrain on all low points. If shutoff valves are provided in themain water piping close to the chiller, some system waterwill be lost when the heat exchangers are drained.
It is recommended that pressure gages be provided atthe entering and leaving water connections to measurepressure drop through the heat exchanger. Gages may beinstalled as shown in the table below. Pressure gages in-stalled at the vent and drain connections do not includenozzle pressure losses.
Use a reliable manometer to measure pressure differen-tial when determining water flow. Regular gages are insen-sitive and do not provide an accurate measurement of flowconditions.
PRESSURE GAGE LOCATION
Rupture disk pipingAll 16LJ chillers are equipped with a rupture disk. It isrecommended that piping from the rupture disk be routedto appropriate areas away from the machine in accordancewith Carrier-Sanyo’s written installation instructions, thelatest version of ANSI/ASHRAE-15 (American NationalStandards Institute/American Society of Heating, Refriger-ation, and Air Conditioning Engineers), and any localjurisdictional requirements that may apply. Piping shouldbe adequately supported and the proper fittings should beprovided to allow periodic inspection of the disk. Refer tothe machine dimensional drawing for the exact location ofthe rupture disk on the chiller.
DESIGN AND TEST PRESSURES
LEGEND
Service accessTo perform routine service or maintenance, allow 3 ftclearance on all sides of the machine and 8 in. above thechiller. Tube removal space equal to the overall length ofthe unit should be provided on at least one end of the 16LJchiller. The absorber and condenser waterbox covers arehinged to permit easy opening and access for routine tubecleaning.
Thermal insulationThermal insulation of cold and hot machine surfacesshould be done after final installation at jobsite. Refer tothermal insulation drawings for details on application tech-nique and specific areas of the machine to be insulated.Insulation material should be Armaflex or equal for coldsurfaces and fiberglass or equal for hot surfaces. Surfacearea requirements are per table below.
THERMAL INSULATION SURFACE AREA REQUIREMENTS (sq ft)
NUMBEROF PASSES
GAGE LOCATION(Cooler or Condenser)
Even Two gages in waterbox with nozzlesOdd One gage in each waterbox
UNIT 16LJ RUPTURE DISK SIZE
PIPING CONNECTION SIZE
11-24 2 in. 2 in. 150 psig RF flange31-53 3 in. 3 in. 150 psig RF flange
RF — Raised Face
UNIT 16LJINSULATION THICKNESS
Hot Surface Cold Surface3 in. 11/8 in. 2 in. 11/8 in.
11 30.1 17.3 43.0 3.312 30.1 19.4 43.0 3.313 40.9 20.5 59.3 3.314 40.9 23.7 59.3 3.321 43.0 26.9 65.7 4.322 43.0 26.9 65.7 4.323 56.0 33.4 81.8 5.424 56.0 35.5 81.8 5.431 64.6 37.6 91.5 5.432 64.6 38.8 91.5 5.441 71.0 39.9 106.7 5.442 71.0 42.0 106.7 5.451 81.8 51.7 148.5 7.552 90.4 54.9 161.5 7.553 99.0 57.0 173.3 7.5
Application data
19
Hot water control valveThe hot water control valve for the 16LJ chiller is not partof the standard scope of supply of the unit. It is available asa field-installed accessory and is intended for installation atthe jobsite. The valve should be installed in the hot waterreturn line leaving the generator section of the chiller. Theaccessory valve is a three-way globe mixing type with linearV-port trim. The valve has a carbon steel body with ANSI150 psig flanged end connections. Valve sizes are normally2½ to 6 in., depending on specific job requirements.
A 4 to 20 mA signal from the chiller control paneloperates the valve through either an electric or pneumaticactuator. The control signal allows the valve to modulate theflow of hot water to meet the required cooling load. An elec-tric actuator requires 120-1-60 vac power, supplied from aseparate source, to operate the motor. If the valve is of thepneumatic type, an I/P (current-to-pressure) transducer isprovided to convert the 4 to 20 mA control signal into a 3 to15 psig input signal to the pneumatic actuator.
DIMENSIONS — FLANGED ENDS (150 psig Carbon Steel)
VALVE SIZE (in.) A B C D E2.5 10.88 23.75 12.81 7.25 6.253 11.75 28.25 15.0 7.56 8.134 13.88 29.25 15.0 9.38 9.136 17.75 38.25 17.5 11.56 12.88
ACCESSORY HOT WATER CONTROL VALVE(Pneumatic Actuator Shown)
NOTE: All dimensions are in inches.
609
→
20
HEAT EXCHANGER STANDARD PASS AND NOZZLE LOCATION
LEGEND
HEAT EXCHANGER STANDARD WATERBOX AND CROSSOVER PIPE CONFIGURATION
LEGEND
AVAILABLE NOZZLE ARRANGEMENTS
LEGEND
UNIT 16LJEVAPORATOR ABSORBER CONDENSER GENERATOR
Pass Qty Inlet Location Pass Qty Inlet Location Pass Qty Outlet Location Pass Qty Inlet Location11 5 R 4 R 2 R 6 R12 5 R 4 R 2 R 4 R
13-22 3 R 4 L 2 L 4 L23-51 3 R 2 L 2 L 3 R52-53 2 L 2 L 2 L 3 R
L — Left End (when facing control panel)R — Right End (when facing control panel)
UNIT 16LJEVAPORATOR ABSORBER CONDENSER CROSSOVER PIPE
INCLUDEDInlet Outlet Inlet Outlet Inlet Outlet11-53 N N M M M M Yes Yes
M — Marine Type Waterbox N — Nozzle-In-Head Waterbox
UNIT16LJ
CHILLED WATER COOLING WATER HOT WATER
6 pass 5 pass 4 pass 3 pass 2 pass 4 + 2 pass
3 + 2 pass
3 + 1 pass
2 + 2 pass
2 + 1 pass 6 pass 4 pass 3 pass 2 pass 1 pass
I O I O I O I O I O I O I O I O I O I O I O I O I O I O I O11 L L R L L L R L L L R R L R L L — — R L R R R R L R R R — —12 L L R L L L R L L L R R L R — — R R R L — — R R L R R R — —13 — — R L L L R L L L L L R L R R — — L R L L L L R L L L — —14 L L R L L L R L L L L L R L — — L L L R — — L L R L L L — —21 L L R L L L R L L L L L R L — — L L L R L L L L R L L L — —22 — — R L L L R L L L L L R L — — L L L R — — L L R L L L — —23 L L R L L L R L L L L L R L R R L L L R L L L L R L L L R L24 — — R L L L R L L L L L R L R R L L L R — — L L R L L L R L31 — — — — L L R L L L L L R L R R L L L R — — R R L R R R L R32 — — — — L L R L L L — — R L R R L L L R — — R R L R R R L R41 — — — — L L R L L L — — R L R R L L L R — — L L R L L L R L42 — — — — L L R L L L — — R L R R L L L R — — L L R L L L R L51 — — — — L L R L L L L L R L R R L L L R — — L L R L L L R L52 — — — — L L R L L L — — R L R R L L L R — — L L R L L L R L53 — — — — L L R L L L — — R L R R L L L R — — L L R L L L R L
I — InO — OutL — Nozzle location on LEFT end (when facing control panel)R — Nozzle location on RIGHT end (when facing control panel)
Standard nozzle arrangement
Application data (cont)
21
UNIT VOLTAGE
460-3-60
208-3-60
LEGEND NOTES:1. MCA and MFA include absorbent pump, refrigerant pump, purge
pumps, palladium cell heater and control circuit. 2. kW includes refrigerant pump, absorbent pump, purge pump, pal-
ladium cell heater and control circuit.3. Control circuit voltage = 24-1-60.4. Palladium cell voltage = 230-1-60 (460-3-60 power supply) and
208-1-60 (208-3-60 power supply).
UNIT16LJ
PUMP/MOTOR (kW) RLA TOTALAMPS
MCA MFA kWAP RP PP AP RP PP
11 1.1 0.2 0.75 2.7 1.2 1.45 6.2 7.5 10 4.312 1.1 0.2 0.75 2.7 1.2 1.45 6.2 7.5 10 4.313 1.1 0.2 0.75 2.7 1.2 1.45 6.2 7.5 10 4.314 1.1 0.2 0.75 2.7 1.2 1.45 6.2 7.5 10 4.321 2.2 0.2 0.75 5.1 1.2 1.45 8.6 10.4 15 5.922 2.2 0.2 0.75 5.1 1.2 1.45 8.6 10.4 15 5.923 2.2 0.3 0.75 5.1 1.3 1.45 8.7 10.4 15 5.924 2.2 0.3 0.75 5.1 1.3 1.45 8.7 10.4 15 5.931 3.0 0.3 0.75 6.7 1.3 1.45 10.3 12.9 20 7.232 3.0 0.3 0.75 6.7 1.3 1.45 10.3 12.9 20 7.241 3.0 0.3 0.75 6.7 1.3 1.45 10.3 12.9 20 7.242 3.0 0.3 0.75 6.7 1.3 1.45 10.3 12.9 20 7.251 3.0 0.3 0.75 6.7 1.3 1.45 10.3 12.9 20 7.252 3.0 0.3 0.75 6.7 1.3 1.45 10.3 12.9 20 7.253 3.0 0.3 0.75 6.7 1.3 1.45 10.3 12.9 20 7.2
UNIT16LJ
PUMP/MOTOR (kW) RLA TOTALAMPS
MCA MFA kWAP RP PP AP RP PP
11 1.1 0.2 0.75 5.4 2.2 3.2 12.7 15.6 20 4.012 1.1 0.2 0.75 5.4 2.2 3.2 12.7 15.6 20 4.013 1.1 0.2 0.75 5.4 2.2 3.2 12.7 15.6 20 4.014 1.1 0.2 0.75 5.4 2.2 3.2 12.7 15.6 20 4.021 2.2 0.2 0.75 10.2 2.2 3.2 17.5 21.7 30 5.522 2.2 0.2 0.75 10.2 2.2 3.2 17.5 21.7 30 5.523 2.2 0.3 0.75 10.2 2.4 3.2 17.7 21.9 30 5.624 2.2 0.3 0.75 10.2 2.4 3.2 17.7 21.9 30 5.631 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.032 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.041 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.042 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.051 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.052 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.053 3.0 0.3 0.75 13.8 2.4 3.2 21.3 27.5 40 7.0
AP — Absorbent PumpMCA — Minimum Circuit AmpacityMFA — Maximum Fuse AmpsPP — Purge PumpRLA — Rated Load AmpsRP — Refrigerant Pump
STANDARD VOLTAGE(3-Ph, 60 Hz)
FOR USE ONSUPPLY VOLTAGES
208 200 to 208-volt systems460 440 to 480-volt systems
Electrical data
22
Microprocessor controlsMicroprocessor controls provide the safety, interlock,capacity control, and indications necessary to operate thechiller in a safe and efficient manner.
Control systemThe microprocessor control on each 16LJ chiller isfactory-mounted, factory-wired, and factory-tested toensure chiller protection and efficient capacity control. Inaddition, the program logic ensures proper starting, stop-ping, and cycling of the chiller.
FeaturesControl system• Diagnostic check• Keypad interface for display, set point control and
system configuration• Local and remote operation modes• Recall of alarm/alert messages• Extensive diagnostic and service capabilities• Advanced crystallization protectionSafety cutouts• Absorbent pump motor overload• Refrigerant pump motor overload• Purge pump motor overload• Low chilled water temperature
• Low cooling water temperature• Generator high temperature• Generator high pressure• Chilled water flow• Optional cooling water flow• Chilled water pump interlock• Cooling water pump interlock• High solution concentration Overrides• Solution concentration control• Desolidification modeCapacity control• Leaving chilled water control• Chilled water resetIndications• Chiller operating status • Dilution cycle• Power-on• Pre-alarm alert• Alarm• Safety shutdown messages• Elapsed time (hours of operation)• Remote/local• Standby mode
Controls
23
FAN
CONTROL DISPLAY(SEE DETAIL BELOW)
TERMINAL BLOCK
PURGE INDICATIONLAMP
TERMINAL BLOCK
TERMINAL BLOCKFOR POWER SUPPLY
GROUND TERMINAL
EMERGENCY STOPBUTTON
PURGE PUMPON-OFF SWITCH
CHILLER / HEATER
STOP RUN
SET BACK
#1ABS PUMP
#2ABS PUMP
REF PUMP
PURGE PUMP
SAFETY CIRCUIT
POWER
CHILLER ALARM
STAND BY
DILUTIONBUZZER STOP
OPERATIONSTOP RUN
REMOTE
LOCAL
CHILLER / HEATER
STOP RUN
SET BACK
#1ABS PUMP
#2ABS PUMP
REF PUMP
PURGE PUMP
SAFETY CIRCUIT
POWER
CHILLER ALARM
STAND BY
DILUTIONBUZZER STOP
OPERATIONSTOP RUN
REMOTE
LOCAL
10
1
53
27
9
6
8
4
TYPICAL 16LJ ABSORPTION CHILLER CONTROL PANELFRONT AND LEFT SIDE VIEW
NUMBER DESCRIPTION1 Data display2 Remote/local select button with lamp3 Operation select button with lamp4 Alarm indication lamp5 Power indication lamp6 Safety circuit indication lamp7 Dilution indication lamp8 Stand by indication lamp9 Stop indication lamp
10 Operation indication lamp
CONTROL DISPLAY
24
Controls (cont)
CONTROL RELAY
CIRCUIT PROTECTOR
TRANSFORMER
TERMINAL BLOCK
TRANSFORMER
I/O BOARD
FUSE
FUSE
MAIN CIRCUITBREAKER
TRANSFORMER
ELECTROMAGNETIC CONTACTOR
TERMINAL BLOCK
TYPICAL 16LJ ABSORPTION CHILLER CONTROL PANEL (cont)INSIDE AND RIGHT SIDE VIEW
25
Typical piping
Sup
ply
Hea
der
Ret
urn
Hea
der
Sec
onda
ryC
hille
dW
ater
pum
pB
ypas
s va
lve
Prim
ary
Chi
lled
wat
er p
ump
Air
Con
ditio
ner
Hot
wat
erP
ump
Hot
wat
er3
way
val
ve
Coo
ling
wat
er p
ump
Coo
ling
tow
er
Mak
e up
wat
er
To d
rain
To d
rain
F
CC
TTTTT
PP
TP
P P P
Air
vent
NO
TE
S:
1.A
ll ite
ms
exte
rnal
to th
e do
tted
line
in th
e ab
ove
diag
ram
are
to b
e fie
ld-s
uppl
ied.
2.P
ipin
g an
d co
mpo
nent
s sh
own
are
typi
cal t
o in
dica
te g
ener
al p
oint
-of-
conn
ectio
n on
ly a
nd a
re n
ot in
tend
ed t
o sh
ow d
etai
ls fo
ra
spec
ific
inst
alla
tion.
Inst
alla
tion
and
pipi
ng s
houl
d be
don
e in
acc
orda
nce
with
16L
J In
stal
latio
n In
stru
ctio
ns.
3.R
efer
to 1
6LJ
chill
er d
imen
sion
al, f
ound
atio
n an
d fie
ld w
iring
dra
win
gs fo
r de
tails
of a
spe
cific
mod
el s
ize.
4.In
stal
l the
rmom
eter
s an
d pr
essu
re g
ages
at l
ocat
ions
con
veni
ent f
or s
ervi
cing
in th
e in
let a
nd o
utle
t wat
er li
nes
to th
e ch
iller
.5.
Loca
tion
of t
he c
hille
d w
ater
, co
olin
g w
ater
and
hot
wat
er p
umps
as
wel
l as
the
exp
ansi
on t
ank
mus
t ta
ke i
nto
acco
unt
the
hydr
osta
tic h
ead
to e
nsur
e th
at th
e w
ater
box
desi
gn p
ress
ure
is n
ot e
xcee
ded.
6.P
rovi
de v
ent a
nd d
rain
val
ves
in e
ach
wat
erbo
x.7.
Pro
vide
a to
wer
byp
ass
valv
e if
the
tem
pera
ture
of t
he c
oolin
g w
ater
ret
urni
ng fr
om th
e to
wer
can
fall
belo
w 6
4 F.
LEG
EN
D
Flo
w M
eter
Pre
ssur
e G
age
Pum
p
Sto
p V
alve
Sto
p V
alve
for
Cle
anin
g Li
quid
Str
aine
r
The
rmom
eter
The
rmos
tat
26
Single-Effect, Low Temperature Hermetic Absorption Liquid ChillersSize Range: 75 to 525 TonsCarrier-Sanyo Model Number: 16LJPart 1 — General1.01 SYSTEM DESCRIPTION Electronically controlled, single effect (one-stage) absorp-tion liquid chiller utilizing hermetic refrigerant and absor-bent pumps, lithium bromide solution as the absorbent,and water as the refrigerant. Low temperature hot watershall be supplied to the generator as the heat source.1.02 QUALITY ASSURANCE
A. Chiller performance shall be rated in accordancewith ARI Standard 560-2000.
B. Chiller shall be manufactured in accordance withANSI/ASHRAE 15 (latest edition) Safety Code forMechanical Refrigeration.
C. Chiller shall be designed and constructed to meetapplicable UL requirements and shall bear the ULlabel.
D. Each chiller shall undergo a series of standard fac-tory tests to ensure that the unit is leak tight, that allelectrical components operate as intended, and thatevery aspect of unit fabrication meets stringent qual-ity standards in accordance with good practice andthe manufacturer’s quality assurance requirements.
1. The shellside of each chiller shall be leak testedby pressurizing to 7 psig with nitrogen and thenchecked by spraying a soap and water mixtureon all welds, tube joints and/or gasketed jointsto identify any major leaks. Afterward, a massspectrometer test shall be performed by evacu-ating the unit to 0.01 mm Hg absolute, cover-ing the machine with a vinyl tent andintroducing helium gas under the tent. Anyremaining leaks will allow the helium to bedrawn into the shellside of the machine. Theacceptable total leak rate as measured by themass spectrometer test shall not exceed.000002 cc/sec standard air.
2. The tubeside of the evaporator, absorber, con-denser and generator shall be hydrostaticallytested at 1.5 times rated design pressure andheld for 1 hour.
3. All machine wiring shall undergo an insulationresistance test. The machine control panel andall electrical components shall also be function-ally tested to verify continuity and properelectrical operation.
4. Final assembly inspection shall consist of verify-ing that all valves, controls, instrumentation,pumps, purge components and all othermachine components have been properlyinstalled on the machine.
5. Each unit shall be checked for overall appear-ance and dimensional accuracy.
6. Final inspection shall be performed on eachunit to check that the nameplate data is correctand that all accessories are furnished asrequired.
1.03 DELIVERY, STORAGE, AND HANDLINGA. Unit shall be stored and handled in accordance with
the manufacturer's recommendations.B. Unit shall be factory-charged with lithium bromide
solution if the machine is configured to ship in onepiece. For shipments of multiple pieces, charging oflithium bromide solution shall be performed at thejobsite in accordance with the manufacturer’s writ-ten instructions.
C. All units shall be shipped with 3 psig nitrogenpressure.
D. Chiller shall be shipped with nameplates indicatingname of manufacturer, model size, serial numberand all other pertinent machine data.
1.04 WARRANTY Manufacturer shall guarantee the chiller against defects inmaterials or workmanship for a period of one year fromdate of initial operation or 18 months from date of ship-ment, whichever occurs first. Manufacturer shall providethe labor to repair or replace any part found to be defectivein material or workmanship within the warranty period.Part 2 — Products 2.01 EQUIPMENT
A. General: Absorption liquid chiller shall include evaporator,absorber, condenser, generator, solution heatexchanger, refrigerant/absorbent pumps, purgesystem, piping, wiring, controls and auxiliaries.Standard shipment of the machine shall be in onepiece. Initial charge of lithium bromide shall beshipped inside the machine for all single-piece ship-ments. For multiple-piece shipments, initial chargeof lithium bromide shall be shipped separately forcharging at the jobsite. Generator shall be designedfor operation on low temperature hot water as spec-ified on the equipment schedule. A rupture disk shallbe provided as standard on all machines.
B. Operating Characteristics:1. Chiller operation shall be characteristic of a
single-effect absorption cycle. The weaksolution pumped from the absorber to thegenerator shall initially pass through a solutionheat exchanger to improve operating efficiencyby preheating the weak solution on the tubeside with the strong solution returning from thegenerator on the shellside.
2. Unit shall be capable of continuous operationfrom 100 to 10% capacity, with enteringcondenser water temperatures as low as 64 Fwithout the need for a cooling tower bypassvalve. Thermostat on/off control of the coolingtower fan is recommended when cooling watertemperature falls below 64 F.
Guide specifications
27
C. Heat Exchangers: 1. All heat exchangers shall be of shell and tube
construction with shells, tube sheets, tubesupport sheets and waterboxes fabricated ofcarbon steel. All heat exchangers shall incorpo-rate straight tubes. Tube material shall becopper for all heat exchangers. The evaporator,absorber, condenser and generator tubes shallbe rolled into grooved tubesheets and expandedinto tube support sheets, and shall be individu-ally replaceable.
2. The evaporator, absorber and condenser water-boxes shall be designed for 150 psig workingpressure. The absorber and condenser water-boxes shall be hinged to permit access toall tubes from either end. Nozzle-in-head(NIH) type waterboxes shall be supplied on theevaporator while the absorber-condenser water-boxes shall be marine type. Waterboxes shall beprovided with vent and drain connections.Epoxy painting of the waterboxes and tubesheets shall be provided for corrosion protec-tion. ANSI 150 psig R.F. (raised face) flangesshall be furnished on all waterbox nozzleconnections.
3. The generator tube side shall be designed for150 psig working pressure for use with lowtemperature hot water.
4. A solution heat exchanger shall be an integralpart of the machine to increase cycle efficiencyby preheating the weak solution on its way tothe generator while pre-cooling the strong solu-tion returning from the generator.
5. Dispersion trays shall evenly distribute refriger-ant over the evaporator tubes and lithium bro-mide over the absorber tubes. These trays shallbe fabricated of stainless steel to ensure contin-uous, corrosion-free, high-efficiency operation.
D. Pump/Motors:Refrigerant and absorbent pump/motor assembliesshall be of the self contained, leakproof, hermetictype, without an external seal water system tominimize air leakage into the machine. Lubricationand cooling shall be accomplished by the fluid beingpumped; auxiliary water piping for cooling andlubrication shall not be acceptable. Each pumpcasing shall be welded into the piping at the factoryand shall be furnished with isolation valves on thesuction and discharge side. Each pump shall includespring-loaded, wear-compensating tapered carbonbearings to ensure long life and reliability. Pump/motor assemblies shall be designed for 25,000 hoursof normal operation between inspections.
E. Purge System:An automatic purge system shall be furnished toprovide a continuous purging action whenever thechiller is in operation to assure long machine life andefficient performance. Noncondensables shall beremoved from the absorber by a liquid eductor,
which shall use flow from the absorbent pump tocreate a suction. Noncondensables shall be storedexternal to the unit and shall be prevented from dif-fusing back into the machine when the unit is notoperating. A palladium cell shall be provided toautomatically vent hydrogen gas from the purgechamber to the atmosphere. It shall be continuouslyenergized, even during machine shutdown. Furtherevacuation of the external storage chamber shall beaccomplished with a factory-mounted purge pump,piped and wired to the machine. The need to oper-ate the purge pump shall be indicated on the frontof the control panel.
F. Controls, Safeties and Diagnostics:1. Controls:
a. The chiller shall be provided with a factory-installed and factory-wired microprocessorcontrol system with modular componentconstruction. The controls shall be of thePID type and shall continuously monitorthe operation of the chiller and performself-diagnostic checks to ensure that allcontrol limits are satisfied and maintained.The system shall include a control center,power supply, temperature sensors, pres-sure sensors and all necessary auxiliarydevices required for safe and proper chilleroperation housed in a NEMA-1 enclosurewith a hinged, lockable door. Control powershall be 24-1-60.The chiller control system shall have the abil-ity to interface and communicate with abuilding management system with additionalhardware.The control system shall include a 7-segmentlight-emitting diode (LED) display screenwith function keys, emergency stop buttonand indication lamps. The microprocessorshall be configurable to display either Englishor metric units.
b. The control panel display screen shall allowan operator to easily set and display theoperating mode and configurable settings ofthe machine. The display shall indicatepower on, chiller run status, safety circuitand alarm status, remote/local operation,standby mode and dilution cycle operation.Data input and machine settings shall bedone via a data select key and shall allowscrolling through the individual chillerparameter settings.
28
c. Monitoring the operation of the chiller shallbe done on a continuous basis. The displayshall indicate all pertinent system operatingparameters and alarms, as necessary, includ-ing the following:1) Chiller operating hours.2) Chilled water inlet temperature.3) Chilled water outlet temperature.4) Chilled water temperature set point.5) Cooling water inlet temperature.6) Condenser temperature.7) Generator temperature.8) Hot water inlet temperature.9) Hot water outlet temperature.
10) Absorbent pump start counter and oper-ating hours.
11) Refrigerant pump start counter andoperating hours.
12) Purge pump start counter and operatinghours.
13) Chiller start counter.14) Purge tank pressure.
d. Capacity control shall be by means of elec-tronically modulating the accessory hotwater control valve to maintain the tempera-ture of the chilled water. Load modulationshall be from 100% to 10% of machine fullload under normal ARI conditions. The hotwater control valve shall be positioned by aPID control algorithm to ensure precise con-trol of desired chilled water temperaturewithout hunting or overshooting the setpoint.
e. The microprocessor control system shallinclude a programmed sequence to ensuremachine readiness prior to machine start-up.The microprocessor shall automaticallyenable and interlock the chilled water pump,cooling water pump and cooling tower fansupon chiller activation.
f. Upon request to start the chiller, the controlsystem shall start the chilled water pump andverify chilled water flow. The controller shallthen start the cooling water pump and verifyinterlock signal, before starting tower fan(s),absorbent pump and refrigerant pump.
g. The control system shall automatically senseimpending abnormalities in the absorptionoperating cycle and take the followingactions to either self-correct and/or limit themachine from approaching cycle crystalliza-tion line:1) Close hot water control valve for a set
period.2) Stop the operation of the machine after
performing a dilution cycle if the solu-tion concentration is still over the pre-setlevel.
h. The rate at which the accessory hot watercontrol valve is opened shall be preciselycontrolled.
i. The control system shall automatically cyclethe refrigerant pump whenever the leavingchilled water temperature falls below thedesired set point. The chilled water pumpshall remain on and when the leaving chilledwater temperature rises above the set point,the refrigerant pump shall automaticallyrestart.
j. The control center shall allow reset of thechiller water temperature set point basedupon any one of the following criteria:1) Chilled water reset based on an external
4 to 20 mA signal.2) Chilled water reset based on cooling
water inlet temperature.k. When the stop button is pressed or remote
contacts open the control center shall imme-diately drive the hot water control valve tothe closed position and initiate the normalshutdown sequence including dilution cycle.The display shall indicate that the machine isin the dilution cycle.
2. Safeties:a. Unit shall automatically shut down when any
of the following conditions occur. In addi-tion, the chiller goes into alarm mode andindicates the reason for the shutdown on thechiller data display.1) Absorbent pump motor overload.2) Refrigerant pump motor overload.3) Purge pump motor overload.4) Low chilled water temperature.5) Low cooling water temperature.6) Generator high temperature.7) Generator high pressure.8) Loss of chilled water flow.9) (Optional) loss of cooling water flow.
10) Loss of chilled water pump interlock.11) Loss of cooling water pump interlock.12) High solution concentration.
b. The control system shall detect conditionsthat approach protective limits and take self-corrective action prior to an alarm occur-ring. The system shall automatically reducechiller capacity when any of the followingparameters are outside their normal operat-ing range:1) Low cooling water inlet temperature.2) High cooling water inlet temperature.3) High solution concentration.
3. Diagnostics and Service:a. The chiller control system shall execute a
series of self-diagnostic checks wheneverpower is first turned on to determine if tem-peratures are within pre-start limits, therebyallowing start-up to proceed. If any of the
Guide specifications (cont)
→
609
→
29
limits are exceeded, an alert message will bedisplayed, informing the operator of thecause of the pre-start alert.
b. The control system shall provide an alarmdisplay on the front of the panel for any sen-sor that has failed. These sensors include:1) Chilled water inlet temperature.2) Chilled water outlet temperature.3) Cooling water inlet temperature.4) Cooling water outlet temperature.5) Cooling water intermediate temperature.6) Hot water inlet temperature.7) Hot water outlet temperature.8) Condenser temperature.9) Refrigerant temperature.
10) Diluted solution temperature.11) Generator temperature.12) Purge tank pressure.13) Steam condensate temperature.
c. The chiller controls shall display mainte-nance messages and alarms when efficientoperation of the chiller is in jeopardy orwhen immediate attention is necessary.When operating conditions are predicted tobe problematic, the following messages shallbe displayed on the panel:1) Purge tank high pressure.2) Cooling water tubes excessive fouling.3) Cooling water high temperature.4) Power failure.
4. Building Control System Interface:The chiller control system shall have the abilityto interface and communicate directly to thebuilding control system with additional field-installed hardware and software.
G. Electrical Requirements:1. Power supply to the unit shall be 3 ph, 60 Hz
with voltages of 208 or 460 as specified on theequipment schedule. A control transformershall provide 24-volt single-phase secondarypower for the control panel.
2. Contractor/owner shall supply and installthe electrical power line and all auxiliary electri-cal protection devices per local code require-ments and as indicated necessary by the chillermanufacturer.
3. Contractor/owner shall supply and install elec-trical wiring and devices required to interfacethe chiller controls with the building controlssystem if applicable.
H. Piping Requirements:1. Piping and instrumentation for the chilled
water, cooling water and hot water shall be sup-plied and installed by the contractor/owner.
2. Absorber-condenser crossover piping shall befurnished by the chiller manufacturer.
3. Cooling water flow switch shall be suppliedby either the chiller manufacturer or thecontractor/owner.
4. Piping from the rupture disk shall be providedand installed by the contractor/owner and pipedin accordance with the chiller manufacturer’swritten instructions and any local jurisdictionalrequirements.
I. Thermal Insulation:Insulation of the evaporator, refrigerant pump,sump, piping and chilled water headers, in additionto any hot surfaces shall be field supplied andinstalled on the machine. Chiller manufacturer shallrecommend the material and specify surface area tobe insulated.
J. Sound Level:The overall sound pressure level of the chiller shallnot exceed 80 dbA when measured per ARIStandard 575-1994.
K. Start-up:1. Unit manufacturer shall provide a factory-
trained service representative, employed by thechiller manufacturer, to perform and/or super-vise chiller pressure test (when required), chargechiller with refrigerant (water) and lithiumbromide solution, place unit into operation, andcalibrate all controls in accordance with themanufacturer’s written start-up, operating andmaintenance instructions.
2. After unit start-up has been performed, the samefactory representative shall be available for aperiod of instruction not to exceed 4 hours toinstruct the owner's personnel in the properstart-up, operating and maintenance procedures.
3. Manufacturer shall provide the following docu-mentation and literature:a. Installation Instructions.b. Start-Up, Operating and Maintenance
Instructions.c. Dimensional Drawing.d. Foundation Drawing.e. Field Wiring Diagram.
L. Options and Accessories:1. Marine Waterboxes:
Marine waterboxes with removable covers tofacilitate tube cleaning and maintenance shallbe furnished when specified on the equipmentschedule.
2. High-Pressure Waterboxes:Waterboxes rated for 300 psig working pres-sure with removable covers shall be furnishedwhen specified on the equipment schedule.
3. Special Tubing:Tubing of non-standard materials, geometry orwall thickness shall be provided when specifiedon the equipment schedule.
30
4. Shipping Configuration:Chiller shall ship either fully assembled or inmultiple pieces as specified on the equipmentschedule.
5. Victaulic Nozzle Connections:Victaulic grooves shall be provided on all water-box nozzle connections when specified on theequipment schedule.
6. Cooling Water Flow Switch:Cooling water flow switch, rated for either150 psig or 300 psig, shall be factory suppliedwhen specified on the equipment schedule.
7. Isolation Package:A vibration isolation package consisting of neo-prene isolation pads shall be furnished whenspecified on the equipment schedule.
8. Thermometer Set:A package of 5 adjustable angle thermometersshall be factory-supplied for field installationwhen specified on the equipment schedule.Each shall have a 9 in. scale with a workingrange of 0° F to 120 F and shall be equippedwith a ¾-in. NPT brass well.
9. Hot Water Control Valve:An accessory hot water control valve shall beprovided when specified on the equipmentschedule.
Guide specifications (cont)
609
→
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.New Pg 32 Catalog No. 04-52160003-01 Printed in U.S.A. PC 211 Form 16LJ-1PD
Replaces: NewBook 2Tab 5b
Carrier Corporation • Syracuse, New York 13221 609 8-05
Book 3Tab 3AC1
