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36G Gas ControlProduct Information
Features include: • Patentedcoaxialsolenoiddesign.
•Inletandoptionaloutletscreenshelpprotectfromdebris.
•Highsealingforcedirectactingvalves.
• Controlledgasketcompressionto withstandhighinletpressures.
•Tamperresistantscrews.
• Automated/manualassemblyand comprehensivetesting.
•Built-inhoseconnectionsforsimplified fieldservice.
•Convenientlylocatedelectricon-offswitch.
•Versatilemounting(anyposition).
The36G(Gemini)combinationgascontrolvalveisaversatilemultifunctioncontroldesignedtomeettherequirementsforusewithnon-pilotedintermittentignitionsys-tems(DirectSparkIgnition,HotSurfaceIgnition).Modelsincludefastandslowopensingleandtwostagevalves.Thesevalvesarealsoconvertiblefornatural/LPgases.Alongwithitsreducedsize,allcontroladjustmentsandfeatures,aswellasthesysteminterface-wiringpanel,havebeendesignedonthetopsurfaceofthecontrolforsimplifiedapplicationandeasyacces-sibility.TheGeminigascontrolisdesignedtomeettoday’srequirementformaximumcapacity,smallersizeandhighlyefficientgassystems.
Single Stage 36G
Two Stage 36G
Information in this manual is provided to qualified HVAC Professionals Only for the installation and replacement of gas valves. Homeowners must contact their local HVAC Contractor for gas valve replacement.
Any gas valve suspected of damage or if it has been flooded with water must be replaced immediately. There are no service-able parts on a gas valve.
36GGASCONTROLPRODUCTINFORMATION
R-4106C2
Contents
Product Description
Overview....................................................................................................................................................... 1
General Specifications
StandardFeatures........................................................................................................................................ 3OptionalFeatures.......................................................................................................................................... 3RegulatorAdjustmentRange........................................................................................................................ 31"PressureDropCapacity............................................................................................................................ 4
Single Stage Model
SchematicGasFlowDiagram....................................................................................................................... 5StandardOpenControl................................................................................................................................. 6SlowOpenControl........................................................................................................................................ 6ConvertibleRegulator................................................................................................................................... 6SystemApplications...................................................................................................................................... 7ElectricalConnections.................................................................................................................................. 8Dimensions................................................................................................................................................... 8
Two Stage Model
SchematicGasFlowDiagram....................................................................................................................... 9StandardOpenControl................................................................................................................................. 10SlowOpenControl........................................................................................................................................ 10ElectricalConnections.................................................................................................................................. 11Dimensions................................................................................................................................................... 11
Models Available
Model&TypeNumberDesignations............................................................................................................. 12
36GGASCONTROLPRODUCTINFORMATIONR-4106C 3
GeneralSpecifications
Standard Features
• Inlet/Outletscreen•Ambienttemperaturefor–40˚Fto175˚F•Mounting(Anyposition)•Quietredundant•Electricalshut-off•Topmountedcomponents•Outletpressuretap(5/16"I.D.hoseconnection)•Ventconnectionfor5/16"I.D.hose•Quick-connectterminals(1/4")•Mountingholesfor8-32screws•Adjustableregulator(s)•Maximumpressure(1/2PSI)•CSAapproved
Optionals Features
•Groundterminal•NaturaltoLPregulatorselector(convertible;singlestageonly)•Slowopen•Inletpressuretap(5/16"I.D.hoseconnection)•Right-angleoutlet•Limitedmaximumadjustableregulator•Ventfittingfor1/4"I.D.hose(90˚elbow)•1/8"N.P.T.Pressuretaps(inletandoutlet)
Regulator Adjustment Range
Valve(Stages)
CSA Std. Gas.64 Sp. Gr.
(1000 BTU/CU. FT.)
LP Gas1.53 Sp. Gr.
(2500 BTU/CU. FT.)
AdjustmentRange
(NAT., IN. W.C.)
AdjustmentRange
(LP., IN. W.C.)
PipeSizes
Single
Two
1/2 x 1/2 NPT
1/2 x 1/2 NPT
40 –210
20 low –210 high
60 –340
32 low –340 high 1.0 - 4.0 low2.0 - 5.0 high
4.0 - 10.0 low6.0 - 12.0 high
1.5 - 3.52.5 - 5.0
5.0 - 11.57.0 - 12.0
36GGASCONTROLPRODUCTINFORMATION
R-4106C4
GeneralSpecifications
1" Pressure Drop Capacity
1" PRESSURE DROP CAPACITY(1/2" x 1/2" PIPE SIZE)
0
50
100
150
200
250
0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
DIFFERENTIAL PRESSURE (IN. W.C.)
NA
T. G
AS
FL
OW
(K
BT
U/H
R)
1/2 x1/2
Pipe Sizes(NPT)
140,000BTU/HR
CSA Std. Gas.64 Sp. Gr.
(1000 BTU/CU. FT.)
226,800BTU/HR
LP Gas1.53 Sp. Gr.
(2500 BTU/CU. FT.)
1.0" PRESSURE DROP CAPACITY
36GGASCONTROLPRODUCTINFORMATIONR-4106C 5
Schematic Gas Flow Diagram
SingleStageModel
DIAGRAM FOR ILLUSTRATION ONLY, NOT ALL DETAILS ARE INCLUDED
RedundantSolenoid
OutletPressureTap
InletPressureTap
InletScreen
Inlet
ControlGasOrifice
OpeningOrifice
Diaphragm
OutletScreen
Outlet
Vent(LeakLimited)
RegulatorAdjustScrew
RegulatorCapScrewMainValve
36GGASCONTROLPRODUCTINFORMATION
R-4106C6
Standard Open Control
SingleStageModel
Slow Open Control
Thiscontrolhasastandardopeningcharacteristic,whichissuitableforawiderangeofapplications.Itprovidesafastrisetofullpressureuponenergizingthesolenoid.Regulator LPspringconversionkitsareavail-ableforthiscontrol.
0 1 2 3 4 5 6 7 8 9 10
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
SECONDS
INC
HE
SW
.C.
GEMINI STANDARD OPEN GAS VALVE(.019 OPENING ORIFICE)
Thiscontrolhasaslowopeningcharacteristic.Itprovidesaslowincrease ofgastofullpressureforsmootherignition,asmayberequiredbysomeap-plications.
Thereareoptionsavailable:B..006OpeningorificeC..008OpeningorificeD..012Openingorifice
Convertible Regulator
NOTE:TYPICALOPENINGCURVENATURALGAS100,000BTU/HR.7"W.C.INLET/3.5"W.C.OUTLETOPENING CHARACTERISTICS WILL VARY WITH FLOW RATE AND APPLICATION.
0 1 2 3 4 5 6 7 8 9 10
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
SECONDS
INC
HE
SW
.C.
GEMINI SLOW B
0 1 2 3 4 5 6 7 8 9 10
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
SECONDS
INC
HE
SW
.C.
GEMINI SLOW C
0 1 2 3 4 5 6 7 8 9 10
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
SECONDS
INC
HE
SW
.C.
GEMINI SLOW D
Theconvertibleregulatoroptionforthiscontrolinvolvesaconstruction,whichpermitseasyNaturaltoLPconversion(orviceversa)byremoving,invertingandreplacingtheregulatorcapscrew.Thisfeatureeasilylendsitselftouseinmobilehomesandinfra-redapplications
0 1 2 3 4 5 6 7 8 9 10
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
SECONDS
INC
HE
SW
.C.
GEMINI CONVERTIBLE GAS VALVE
NOTE:TYPICALOPENINGCURVENATURALGAS100,000BTU/HR.7"W.C.INLET/3.5"W.C.OUTLET
NOTE:TYPICALOPENINGCURVENATURALGAS100,000BTU/HR.7"W.C.INLET/3.5"W.C.OUTLET
36GGASCONTROLPRODUCTINFORMATIONR-4106C 7
SingleStageModel
HSI CONTROL.ThethermostatcallsforheatandenergizestheHSIcontrol.Ifsystemisequippedwithprepurge,thepurgefanisenergizedandpowerwill bedelayedthirtysecondsbeforeapplicationtothesiliconcarbideignitor.Ifprepurgeisnotselected,theignitorispoweredwithinonesecond.Theignitorheatsupandattheendoftheheatingperiod,theredundantandmainvalvesareopened.Aflamemustbedetectedwithinafixedtimeperiodorbothvalvesclose,theignitoristurnedoffandtheHSIcontrollocksoutunlessthesystemisequippedwithretry.Retryindicatestheignitionsequencewillberepeatedforatotalofthreetriesifflameisundetectedorlostwithin30secondsofignition.
Accessories:HSIcontrol,SenseElectrode,SiliconCarbideIgnitor,SiliconNitrideIgnitor
INTEGRATED CONTROL.The50A55or50A65IntegratedHotSurfaceIgnitioncontrolsemployamicroprocessortocontinuouslymonitor,analyze, andcontroltheproperoperationofthegasburner,inducer,andfan.Signalsinterpretedduringcontinualsurveillanceofthethermostatandflamesensingelementinitiateautomaticignitionoftheburner,sensingoftheflame,andsystemshut-offduringnormaloperation.Thecontrolincorporatessystemfaultanalysisforquickgasflowshut-off,coupled withautomaticignitionretryuponsensingafaultcorrection.
System Applications – Hot Surface Ignition
System Applications – Direct Spark Ignition
HEAT COOL PARK PARK
CIRCULATORBLOWER
CIRCNEU IND
INDNEU
INDUCER
K1a K1b
K2 K4
RRO2
RO1ROLLOUTSWITCH
THXFMRHOT
XFMRNEU
TRC
YGW
24 VAC
COMPRESSORCONTACTORCOIL
THERMOSTAT
R
YGW
HLI
AUX.LIMIT
HIGHLIMIT
PRESSURESWITCH
HLOPS
K8
K7
GASVALVE
MVMVGNDLIGNFP2FP1
IGNITOR
FLAMESENSEPROBE
LINEHOT
LINENEU120 VAC
THERMOSTAT
HOT LINEVOLTAGE NEUTRAL
COMMON(“C”)W R
LINEVOLTAGE
LOW VOLTAGE
REDUNDANTVALVE
TRANSFORMER24VOLTSAC
60Hz
MAINVALVE
MV
MV
TR
TH
FP
GND
L
IGN
BLACK
SILICON CARBIDEIGNITOR
WH
ITE
BLA
CK
LIM
IT
FLAMESENSORPROBE
Thethermostatcallsforheatandsimultaneouslyener-gizestheDSIcontrolmoduleandgasvalvesolenoid.Sparksattheignitionelectrodesignitethegasatthemainburner.Flameissensedthroughtheelectrodesbytheflamedetectioncircuitandshuts offthesparking.Ifflameisnotestablishedwithinafixedtimeperiod(lock-outtime)mainandredundantvalvesclose,sparkingceasesandthecontrolmodulelocksout.
Accessories:DSIcontrol,Electrodes
MAINVALVE
MV
MV
TR
TH
24V.
GND
REDUNDANTVALVE
THERMOSTAT
SPARKRETURN
DSICONTROL
H.V
.
LEA
D
36GGASCONTROLPRODUCTINFORMATION
R-4106C8
SingleStageModel
Electrical Connections
(2) 1/4" Male QuickConnect Terminals ForPower Connections
(1) or (2) Optional 1/4" MaleQuick Connect Terminals
For Ground Connection
Dimensions – Gemini Standard/Slow Open Control
.720
2.108
GAS FLOW
2.400
Outlet1/2"N.P.T.
PlasticPlugs(3)
Inlet1/2"N.P.T.
MountingHoles(2)For#8-32ThreadFormingScrews
1.3431.343
1.250
.542
3.960
.828
2.781
1.339.648
4.260
Switch(ShippedinÒONÓPosition)
2.750SwingRadius
InletPressurePost.339Dia.+DFT.(SetScrew: 3/32"HexHead)Accept5/16"IDHoseConnection
1/4"x.032"THK.MaleSpadeTerminals(2)
ControlLabel
RegulatorCoverScrew(Reg.Adj.BeneathThisScrew)
Vent(.339Dia.+DFT.Post)Accept5/16"HoseConnection
OutletPressurePost.339Dia.+DFT.(SetScrew: 3/32"HexHead)Accept5/16"HoseConnection
1.890
.650
.539
3.168
.650
36GGASCONTROLPRODUCTINFORMATIONR-4106C 9
Schematic Gas Flow Diagram
TwoStageModel
DIAGRAM FOR ILLUSTRATION ONLY, NOT ALL DETAILS ARE INCLUDED
RedundantSolenoid
InletScreen
ControlGasOrifice
OpeningOrificeDiaphragm
OutletScreen
Vent (Leak
Limited)
LoFireRegulatorHiFireRegulator
MainValve
OutletPressureTapRegulator
SelectorValve
Outlet
Inlet
InletPressureTap
36GGASCONTROLPRODUCTINFORMATION
R-4106C10
TwoStageModel
Standard Open Control
Thiscontrolhasdualoutletpressurelevels,whichisdesirableforhighefficiencyapplications.Itprovidesafastrisetofirststagepressureuponenergizingthesinglestagesolenoid.Then,ifmorepressurelevelisrequiredtosatisfyheatingrequirement,energizingasecondstagesolenoidcanattainahigherpressurelevel.RegulatorLPspringconversionkitsareavailableforbothpressurelevelsonthiscontrol.
0 1 2 3 4 5 6 7 8 9 10
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
SECONDS
INC
HE
S W
.C.
GEMINI TWO STAGE GAS VALVE
Slow Open Control
Thiscontrolhasdualoutletpressurelevels,whichisdesirableforhighefficiencyapplications.Itprovides aslowerrisetofirststagepressureuponenergizingthesinglestagesolenoid.Ifmorepressureisrequiredtosatisfyheatingrequirement,energizingasecondstagesolenoidcanattainaslowerrisetoahigherpressurelevel.Thisslowerriseconditionisdependentonthesize oforificeused.RegulatorLPspringconversionkitsforbothpressurelevelsareavailableforthiscontrol.
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
SECONDS
INC
HE
SW
.C.
GEMINI TWO STAGE GAS VALVE
NOTE:TYPICALOPENINGCURVENATURALGAS100,000BTU/HR.7"W.C.INLET/3.5"W.C.OUTLET
NOTE:TYPICALOPENINGCURVENATURALGAS100,000BTU/HR.7"W.C.INLET/3.5"W.C.OUTLET
36GGASCONTROLPRODUCTINFORMATIONR-4106C 11
TwoStageModel
Electrical Connections
(4) MALE QUICK CONNECT TERMINALS 3-PIN AMP CONNECTOR
(1) OR (2) OPTIONAL 1/4" MALE QUICK CONNECT TERMINALS FOR GROUND CONNECTION
Dimensions
.720
2.108
3.603
.539
.650.633
GAS FLOW
2.364
1.329
1.329
1.250(Octagon)
.544
.828
2.781
1.342
.648
4.239
1.890
.074
InletPressurePostSetScrew: 3/32"HexHead(.339Dia.+DFT.)Accepts5/16"IDHoseConnection
3PinMate-N-LokConnector
3.960InlettoOutletInlet1/2"N.P.T.
OutletPressurePostSetScrew: 3/32"HexHead(.339Dia.+DFT.)Accepts5/16"HoseConnection
2ndStageRegulatorCoverRegulatorAdjustBeneathThisScrew
IstStageRegulatorCoverRegulatorAdjustBeneathThisScrew
(4)QuickDisconnectTerminals
Vent(.330Dia.+DFT.Post)Accepts5/16"HoseConnection
ControlLabel
2.750SwingRadius Switch(ShippedinÒONÓPositon)
Outlet1/2"N.P.T.
ModelsAvailable
OPTIONS FEATURES
BASIC MODEL NUMBER SERIES
TYPE NUMBER CODING
2XX
5XX
6XX
1/2NPT x1/2NPTPressure TapTowers
1/2NPT x1/2NPT1/8NPTPress.Taps
1/2NPT x1/2NPTSideOutlet1/8NPTPress.Taps
Number Pipe Size (inlet x outlet)
PACK OPTION
Blank
B1
P1
Single Pack
Bulk Pack
Pallet Pack
Pack Code Description
36G XX TYPEX XX
ModelNumber
36G22
36G23
36G24
36G29
36G52
36G54
36G55
Notes:A–.019OpeningOrificeB–.006OpeningOrificeC–.008OpeningOrificeD–.012OpeningOrificeE –.0276OpeningOrifice
Fast
Ope
n
Slo
w O
pen
Con
vert
ible
Two
Sta
ge
Not
es
X
X
X
A
B
C
A
D
E
C
X
X
X
X
X
X
X
None
Y
Alpha Numeric
24V50/60HZ
24V50/60HZ
Voltage
Std.Adj.
LimitedMax.Adj.Reg.
Additional Features
VOLTAGE / FEATURE LETTER CODING
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White-Rodgersisadivision ofEmersonElectricCo.
TheEmersonlogoisa trademarkandservicemark ofEmersonElectricCo.
R-4106C1006