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StainlessLiteUnvented mains pressure water storage in Duplex stainless steel
S U P P L I E R S T O T H E M E R C H A N T T R A D E F O R O V E R 4 0 Y E A R S
2
StainlessLite
Gledhill - The Cylinder SpecialistThe Gledhill name is synonymous with a family of water
heating and storage products that lead the field in terms
of innovation and quality. We are respected for our world-
leading range of primary stores, but we have also produced
unvented cylinders from the very beginning. Stainless Lite is
an unvented mains pressure store in Duplex stainless steel
that establishes new criteria for quality, performance and
life.
Providing powerful, mains-pressure performance, it
incorporates high flow rate controls, ideal for multi bathroom
homes where baths fill very quickly.
There are Indirect and Direct patterns for gas/oil and
electricity with model sizes from 60 litres to 400 litres in each
pattern with an additional eight options for solar energy.
Duplex Stainless SteelThe Stainless Lite uses the very latest high specification
Duplex to resist all forms of corrosion including crevice and
stress whilst its high mechanical strength gives it durability.
The very latest automated welding procedures along with
full post weld treatments guarantee welds that are as strong
as the parent metal. Stainless Lite is pressure tested in
the factory to a full 12 bar which is four times the normal
working pressure.
Corrugated CoilStainless Lite uses a high heat transfer corrugated tube heat
exchanger to give a 20% faster recovery than plain tube. It is
also lighter and stronger than plain tube making the vessel
the lightest and easiest to handle on site.
3
Heat LossAll Gledhill Stainless Lite cylinders are manufactured using
the very latest HCFC free EnviroFoam insulation. This has
an Ozone Depletion Potential (ODP) of zero and an industry
leading Global Warming Potential (GWP) of 0.7.
Tests show that the 50mm of EnviroFoam insulation
injected into the case and covering both domes achieves
astonishingly low levels of heat loss, which ensures it is fully
compliant with 2010 Part L requirements for both new build
and replacement cylinders.
25 Year GuaranteeThe 25 year guarantee underlines the usual Gledhill
confidence in its own products. We regularly have copper
cylinders returned to us that we made more than 40 years
ago – why should anyone expect less from stainless steel?
ServiceBuying a good reputable product is critical – but it must be
available when needed. Gledhill has strategically located
manufacturing units so that delivery can be made to a
merchant anywhere within hours.
Quality Standard - EN 12897All Stainless Lite cylinders are manufactured in accordance
with BS EN 12897 the specification for unvented water
Our complete range of stainless steel cylinder options are explained in this brochure:
Page 4 Stainless Lite Direct and Indirect
Page 6 Stainless Lite Solar
Page 8 Stainless Lite Slimline Direct, Indirect and Solar
Page 10 Stainless Lite Horizontal
Page 11 Stainless Lite Heat Pump
Page 12 Stainless Lite Heat Pump Solar
Page 14 Stainless Lite Slimline Heat Pump
Page 15 Buffer Store
Page 16 Flexible Buffer Store
Page 17 Stainless Lite Triple Coil
Page 18 Stainless Lite Vented
storage vessels. The cylinders have been tested by NSF-WRc
and WRAS, and found to comply with Building Regulations
G3 and Water Regulations.
In performance, it complies with the requirements of
BS EN 806-1 to 5 and meets the NHBC criteria for domestic
properties.
Gledhill also operates a quality management system audited
and accepted by the BSI in accordance with BS EN ISO
9001:2008.
The Stainless Lite cylinders are supplied with all the quality
fittings needed, according to model, including;
• Immersion heater(s) • 2 port zone valve (indirect)
• Wiring centre (indirect) • Dual thermostat (indirect)
• Inlet control set • Tundish
• Benchmark log book • Installation manual
• Expansion vessel kit including flexible connection hose
• Lift up pressure and temperature relief valve (unvented)
• Control thermostat and drain valve
• 90 degree elbow on hot draw off
4
Gledhill Building Products manufacture 16 standard direct
and indirect cylinders, ranging from 90 litres to 400 litres
capacity.
The Stainless Lite direct model is supplied with two
immersions for off-peak and on-peak use (except 90 litre
model which only has an on-peak immersion). Therefore,
the store of water in the cylinder can be heated utilising
the off-peak electricity, making the unit extremely efficient.
These cylinders are ultimately lightweight, easy to install
answer for electric hot water options.
The immersion heater(s) must be connected to the supply
through a double pole linked isolating switch with a
minimum breaking capacity of 13A.
All models have a temperature and pressure relief valve
factory set at 6 bar and 92-95°C.
The indirect range has a high efficiency corrugated tube
coil which is connected to a conventional boiler to heat
the cylinder of water. The coils corrugated design gives
you much faster re-heat times than can be achieved with
plain tube coils. All indirect models come with an on-peak
immersion but only the 250, 300 and 400 litre models are
supplied with an off-peak immersion.
All tappings are within a 90˚segment to make installation
easier.
Direct and IndirectUnvented cylinders for use with a conventional boiler or electric power
5
Stainless Lite Direct Technical Specification
Description D90 D120 D150 D180 D210 D250 D300 D400
Product Stock Code ASL0001 ASL0005 ASL0010 ASL0015 ASL0020 ASL0025 ASL0030 ASL0031
Energy Efficiency Class D D D D D D D D
Heat loss watts 35 44 51 54 65 75 85 118
Capacity litres 90 120 150 180 210 250 300 400
Height mm 745 930 1120 1305 1495 1745 1992 2030
Overall Diameter mm 550 550 550 550 550 550 550 630
Weight (empty) kg 13 18 22 24 28 32 37 48
Weight (full) kg 103 138 172 204 238 282 337 448
Pressure regulator bar 3 3 3 3 3 3 3 3
Expansion vessel size litres 12 12 18 18 24 24 35 2 x 24
kW rating of primary coil kW n/a n/a n/a n/a n/a n/a n/a n/a
Heat up time min 90 119 150 179 209 249 299 398/198
Stainless Lite Model Selection Guide
Maximum hot water demandMaximum number of bed
spaces (bedrooms)Model
1 shower room Bedsit (0) D120 IND90
1 bathroom 2 (2) D150 IND120
1 bathroom 4 (3) D180 IND120
1 bathroom & separate shower room 6 (4) D210 IND150
1 bathroom & 2 separate shower rooms or 2 bathrooms 7 (5) D210 IND180
2 bathrooms & separate shower room 7 (5) D250 IND210
2 bathrooms & 2 separate shower rooms 7 (5) D300 IND250
3 bathrooms & 2 separate shower rooms 9 (6) D400 IND300
3 bathrooms & 3 separate shower rooms 9 (6) - IND400
Stainless Lite Indirect Technical Specification
Description IND90 IND120 IND150 IND180 IND210 IND250 IND300 IND400
Product Stock Code ASL0035 ASL0040 ASL0045 ASL0050 ASL0055 ASL0060 ASL0065 ASL0066
Energy Efficiency Class B B B B C C C D
Heat Loss watts 35 44 51 54 65 75 85 118
Capacity litres 90 120 150 180 210 250 300 400
Height mm 745 930 1120 1305 1495 1745 1992 2030
Diameter mm 550 550 550 550 550 550 550 630
Weight (empty) kg 19 22 26 28 33 38 44 55
Weight (full) kg 109 142 176 208 243 288 344 455
Pressure regulator bar 3 3 3 3 3 3 3 3
Expansion vessel size litres 12 12 18 18 24 24 35 2 x 24
kW rating of primary coil kW 16.5 18.0 18.5 19.0 20.5 21.5 25.0 30.5
Heat up time min 17 21 25 30 32 36 38 41
Notes:
1 Heat up time from 15°C to 60°C (applies to primary source only)2 All connections are supplied with compression fittings for direct connection to copper pipework.3 The heat up times shown for the D400 model indicate the times when 1 or 2 immersions are fitted.4 The model sizes shown are based on a typical days hot water use assuming an Economy 7 tariff is provided. A reduction of one model size can normally be made
with an Economy 10 tariff.5 When using the Direct model for high specification developments, an increase of one model size should be considered.6 For further ErP information, please refer to the installation manual at www.gledhill.net
6
StainlessLite SolarUnvented cylinders incorporating a solar coil
Model Selection Guide
Maximum hot water demandMaximum solarpanel area (m2)
Bedrooms Model
1 shower room 2.4 Bedsit SOL180d
1 bathroom 2.8 1-3 SOL210d
1 bathroom & separate shower room 3.36 1-3 SOL250d
1 bathroom & 2 separate shower rooms 4.0 2-4 SOL300d
2 bathrooms & separate shower room 6.0 4-5 SOL400d
Notes:
1 Heat up time from 15°C to 60°C (applies to primary source only)2 All connections are supplied with compression fittings for direct connection to copper pipework.3 The model sizes shown are based on a typical days hot water use assuming an Economy 7 tariff is provided. A reduction of one model size can normally be made
with an Economy 10 tariff.4 When using the Direct model for high specification developments, an increase of one model size should be considered.5 When selecting a solar model, it is important to check the dedicated solar volume is suitable for either the total floor area of the dwelling or the total net area of the
solar panel to ensure compliance with Building Regulations.6 Maximum solar panel area is calculated based on 25l/m2 of net solar panel area.
Gledhill has developed a range of cylinders specifically for solar
applications in mind, therefore providing an efficient way of
providing domestic hot water. Each model features a dedicated
high performance solar coil, transferring the maximum amount
of heat from the solar circuit to the stored water. The cylinders
are compatible with a wide range of solar systems available
through the United Kingdom and have been designed to
maximise the dedicated solar volume.
The direct models are electrically heated cylinders, using
the 3kW immersion heater supplied with the unit, with a
high performance solar coil. They are capable of meeting
the requirements of Building regulations, provided that it is
matched to the panels and the hot water requirement correctly.
The indirect cylinders are heated by a conventional boiler
(either gas or oil) through a second high performance coil.
The solar range is based on the standard Stainless Lite
cylinders, therefore still providing you with mains pressure
hot water, low standing heat losses and lightweight
construction. The range of cylinders is suitable for properties
from a bedsit to a 5 bedroom family home.
Stainless Lite Direct Solar Technical Specification
Description SOL180d SOL210d SOL250d SOL300d SOL400d
Product Stock Code ASL0070 ASL0075 ASL0080 ASL0085 ASL0086
Energy Efficiency Class B C C C D
Heat Loss watts 54 65 75 85 118
Capacity litres 180 210 250 300 400
Height mm 1305 1495 1745 1992 2030
Diameter mm 550 550 550 550 630
Weight (empty) kg 26 30 34 39 49
Weight (full) kg 206 240 284 339 449
Pressure regulator bar 3 3 3 3 3
Expansion vessel size litres 18 24 24 35 2 x 24
kW rating of primary coil kW n/a n/a n/a n/a n/a
Heat up time min n/a n/a n/a n/a n/a
Surface area of solar coil
m2 0.680 0.680 0.970 0.970 1.270
Dedicated solar volume litres 60 70 84 100 150
7
Model Selection Guide
Maximum hot water demandMaximum solarpanel area (m2)
Bedrooms Model
1 bathroom 2.8 1-3 SOL180i
1 bathroom & separate shower room 3.6 1-3 SOL210i
1 bathroom & 2 separate shower rooms 4.8 2-4 SOL250i
2 bathrooms & separate shower room 5.0 3-4 SOL300i
2 bathrooms & 2 separate shower rooms 6.6 4-5 SOL400i
Notes:
1 Heat up time from 15°C to 60°C (applies to primary source only)2 All connections are supplied with compression fittings for direct connection to copper pipework.3 When selecting a solar model, it is important to check the dedicated solar volume is suitable for either the total floor area of the dwelling or the total net area of the
solar panel to ensure compliance with Building Regulations.4 Maximum solar panel area is calculated based on 25l/m2 of net solar panel area.
Stainless Lite Indirect Solar Technical Specification
Description SOL180i SOL210i SOL250i SOL300i SOL400i
Product Stock Code ASL0090 ASL0095 ASL0100 ASL0105 ASL0110
Energy Efficiency Class B C C C D
Heat Loss watts 54 65 75 85 118
Capacity litres 180 210 250 300 400
Height mm 1305 1495 1745 1992 2030
Diameter mm 550 550 550 550 630
Weight (empty) kg 30 35 40 46 59
Weight (full) kg 210 245 290 346 459
Pressure regulator bar 3 3 3 3 3
Expansion vessel size litres 18 24 24 35 2 x 24
kW rating of primary coil kW 18.0 18.5 19.0 20.5 22.0
Heat up time min 28 35 38 41 45
Surface area of solar coil
m2 0.680 0.680 0.970 0.970 1.270
Dedicated solar volume litres 96 101 107 125 165
8
StainlessLite SlimlineUnvented cylinders designed for restricted spaces with optional solar coil
The new Stainless Lite Slimline cylinders have been added
to our range of Duplex stainless steel cylinders, to enable
you to utilise those smaller storage areas.
The standard size Stainless Lite cylinders are 550mm
in diameter but the new slimline range has a reduced
diameter of 475mm.This now enables installers to fit the new
cylinders into smaller properties or older homes where there
are space limitations, and so provide the benefits of mains
pressure hot water.
The new range of Stainless Lite Slimline cylinders come in
sizes from 60 litres to 210 litres in both indirect and direct
versions. In addition, it also comes with a solar option in
180 litre and 210 litre sizes. This now means there will be a
model to suit most homes.
The introduction of the Slimline solar range enables
homeowners to not only upgrade to a Duplex stainless steel
cylinder, but also have the added benefit of being able to
utilise solar power to contribute to the heating of the store.
Properties that previously could not enjoy mains pressure
hot water can now enjoy powerful, mains-pressure
performance, incorporating high flow rate controls, ideal for
multi bathroom homes, where baths fill very quickly.
You will still benefit from the high heat transfer corrugated
tube giving 20% faster recovery than plain tubing, controlled
stratification and minimal heat loss.
All slimline models (except 60 and 90 litre direct options)
come complete with an on-peak immersion. All direct
models have an off-peak immersion.
75mm slimmer than a standard unit
9
Stainless Lite Indirect Slimline and Solar Technical Specification
Description IND60-SL IND90-SL IND120-SL IND150-SL IND180-SL IND210-SLSOL
180i-SLSOL
210i-SL
Product Stock CodeASL475IND60
ASL475IND90
ASL475IND120
ASL475IND150
ASL475IND180
ASL475IND210
ASL475IND180SOL
ASL475IND210SOL
Energy Efficiency Class B C C C C C C CHeat Loss watts 40 52 59 68 76 84 76 84Capacity litres 60 90 120 150 180 210 180 210Height mm 705 978 1250 1520 1790 1970 1790 1970Diameter mm 475 475 475 475 475 475 475 475Weight (empty) kg 14 19 23 28 31 34 33 37Weight (full) kg 74 109 143 178 211 244 213 247Pressure regulator bar 3 3 3 3 3 3 3 3Expansion vessel size litres 12 12 12 18 18 24 18 24kW rating of primary coil kW 15.0 16.5 18.0 18.5 19.0 20.5 18.0 18.5Heat up time min 13 17 21 25 30 32 28 35Surface area of solar coil
m2 n/a n/a n/a n/s n/a n/a 0.680 0.680
Dedicated solar volume litres n/a n/a n/a n/a n/a n/a 60 70
Stainless Lite Direct Slimline and Solar Technical Specification
Description D60-SL D90-SL D120-SL D150-SL D180-SL D210-SLSOL
180d-SLSOL
210d-SL
Product Stock CodeASL475
D60ASL475
D90ASL475
D120ASL475
D150ASL475
D180ASL475
D210ASL475
D180SOLASL475
D210SOL
Energy Efficiency Class D D D D D D C CHeat Loss watts 40 52 59 68 76 84 76 84Capacity litres 60 90 120 150 180 210 180 210Height mm 705 978 1250 1520 1790 1970 1790 1970Diameter mm 475 475 475 475 475 475 475 475Weight (empty) kg 13 16 22 30 31 32 32 36Weight (full) kg 73 106 142 180 211 242 212 246Pressure regulator bar 3 3 3 3 3 3 3 3Expansion vessel size litres 12 12 12 18 18 24 18 24kW rating of primary coil kW n/a n/a n/a n/a n/a n/a n/a n/aHeat up time min n/a n/a n/a n/a n/a n/a n/a n/aSurface area of solar coil
m2 n/a n/a n/a n/s n/a n/a 0.680 0.680
Dedicated solar volume litres n/a n/a n/a n/a n/a n/a 60 70
Model Selection Guide
Maximum hot water demandMaximum number of
bed spaces (bedrooms)Direct Model Indirect Model
1 shower room Bedsit (0) D120-SL / SOL180d-SL IND90-SL
1 bathroom 2 (2) D150-SL / SOL210d-SL IND120-SL / SOL180i-SL
1 bathroom 4 (3) D180-SL / SOL210d-SL IND120-SL / SOL180i-SL
1 bathroom & separate shower room 6 (4) D210-SL IND150-SL / SOL210i-SL
1 bathroom & 2 separate shower rooms or 2 bathrooms 7 (5) D210-SL IND180-SL
2 bathrooms & separate shower room 7 (5) - IND210-SL
Maximum solar panel area (m2) Direct Model Indirect Model
2.4 SOL180d-SL SOL180i-SL
2.8 SOL210d-SL SOL210i-SL
Notes:
1 Heat up time from 15°C to 60°C (applies to primary source only)2 All connections are supplied with compression fittings for direct connection to copper pipework.3 The Direct model sizes shown are based on a typical days hot water use assuming an Economy 7 tariff is provided. A reduction of one model size can normally be
made with an Economy 10 tariff.4 When using the Direct model for high specification developments, an increase of one model size should be considered.5 When selecting a solar model, it is important to check the dedicated solar volume is suitable for either the total floor area of the dwelling or the total net area of the
solar panel to ensure compliance with Building Regulations.6 Maximum solar panel area is calculated based on 25l/m2 of net solar panel area.7 For further ErP information, please refer to the installation manual at www.gledhill.net
10
Horizontal OptionStainlessLite horizontal unvented cylinders with a solar option available
We have achieved yet another market first with the launch of
the UK’s only domestic horizontal unvented cylinder. This has
been independently approved by public health and safety
organisation, NSF-WRc, to meet the legal requirements of
Building Regulations
With another new addition to Gledhill’s market leading
family of StainlessLite cylinders, the new range of horizontal
products are available in sizes from 180 litres to 300 litres in
both indirect and indirect solar configurations.
Providing the ideal solution for locations where installation
height is restricted, Gledhill’s StainlessLite range is up to 50
per cent lighter than other unvented stainless steel cylinders,
making the product perfectly suited to loft spaces.
NSF
-WRC
APPROVED
P RO DUC
T
Notes:
1 Heat up time from 15°C to 60°C (applies to primary source only)2 All connections are supplied with compression fittings for direct connection to copper pipework.3 When selecting a solar model, it is important to check the dedicated solar volume is suitable for either the total floor area of the dwelling or the total net area of the
solar panel to ensure compliance with Building Regulations.4 Maximum solar panel area is calculated based on 25l/m2 of net solar panel area.
Stainless Lite Horizontal Indirect and Solar Technical Specification
Description IND180 IND210 IND250 IND300IND180
SOLIND210
SOLIND250
SOLIND300
SOL
Product Stock Code ASL0050H ASL0055H ASL0060H ASL0065H ASL0090H ASL0095H ASL0100H ASL0105H
Energy Efficiency Class C C C C C C C C
Heat Loss watts 78 82 86 91 78 82 86 91
Capacity litres 176 207 246 296 174 208 244 294
Overall Height mm 585 585 585 585 585 585 585 585
Overall Width mm 1310 1495 1745 1992 1310 1495 1745 1992
Diameter mm 550 550 550 550 550 550 550 550
Weight (empty) kg 27 31 35 46 34 34 35 46
Weight (full) kg 203 238 281 342 205 242 279 340
Pressure regulator bar 3 3 3 3 3 3 3 3
Expansion vessel size litres 18 24 24 35 18 24 24 35
kW rating of primary coil kW 18.4 20.9 20.3 21.6 15.4 16.0 20.2 17.7
Heat up time min 27 27 36 32 21 24 38 26
Surface area of solar coil
m2 n/a n/a n/a n/a 0.49 0.49 0.59 0.59
Dedicated solar volume litres n/a n/a n/a n/a 64 85 112 145
11
StainlessLite HPStainless steel unvented cylinder designed for use with heat pumps
Gledhill have expanded its range of unvented stainless steel
units specifically for heat pump applications by developing
a model with an increased size heat exchanger to maximise
the lower temperatures available from the heat pump.
The heat exchanger is a new design, and has been
increased up to 4 square metres in the largest units,
maximising the heat exchange.
Due to the fact that many heat pumps will not raise the
stored water temperature to 60˚C, which is necessary to
prevent the growth of legionella, the Stainless Lite HP model
is supplied with an immersion heater and a thermostat. It
is recommended that a thermostat is fitted which brings the
immersion heater ‘on’ at a temperature just below the heat
pump maximum and switches off at 60˚C or 65˚C.
Stainless Lite HP Technical Specification
Description HP180IND HP210IND HP250IND HP300IND HP400IND
Product Stock CodeASL180HP
2.5SQMASL210HP
3SQMASL250HP
3SQMASL300HP
3SQMASL400HP
4SQM
Energy Efficiency Class B C C C D
Heat Loss watts 54 65 75 85 118
Capacity litres 180 210 250 300 400Height mm 1305 1495 1745 1992 2030Diameter mm 550 550 550 550 630Weight (empty) kg 33 38 43 58 62Weight (full) kg 213 248 293 358 462Pressure regulator bar 3 3 3 3 3Expansion vessel size litres 18 24 24 35 2 X 24kW rating of heat pump coil kW 16.74 17.91 15.93 13.18 18.87Heat pump coil pressure loss bar 0.04 0.05 0.06 0.05 0.07Surface area of heat pump coil m2 2.5 3 3 3 4
Model Selection Guide
Maximum hot water demand Bedrooms Model
1 bathroom 1-3 HP180IND1 bathroom & separate shower room 2-3 HP180IND1 bathroom & 2 separate shower rooms 2-3 HP180IND2 bathrooms & separate shower room 2-4 HP210IND2 bathrooms & 2 separate shower rooms 2-4 HP250IND2 bathrooms & 2 separate shower rooms 3-5 HP300IND2 bathrooms & 3 separate shower rooms 4-5 HP400IND
Notes:
1 All connections are supplied with compression fittings for direct connection to copper pipework.2 Thesuggestedmodelsizesshownarebasedonatypicaldayshotwateruseassumingthattheheatpumpwillheatthedomestichotwatertoapproximately50˚C.3 HeatpumpkWratingperformedat80˚Cand0.25l/s.
12
StainlessLite HP SOLUnvented cylinders designed for use with heat pump and solar technology
Gledhill have produced an unvented stainless steel unit
specifically for heat pump applications providing mains
pressure domestic hot water. Utilising the well established
Gledhill Stainless Lite unvented hot water cylinder, this
product has been developed to maximise the lower
temperatures available from the heat pump.
The heat exchanger is a totally new design. It consists
of a multi-pass corrugated stainless steel tube in parallel
to reduce the pressure loss whilst maximising the heat
exchange. Many medium to large heat pumps need heat
exchangers in the store that will cope with the higher flow
rates associated with primary temperatures that are typically
50˚C or 60˚C.
All the usual features of the Gledhill Stainless Lite are
maintained together with all the necessary controls and
expansion devices included.
Due to the fact that many heat pumps will not raise the
stored water temperature to 60˚C, which is necessary to
prevent the growth of legionella, the Stainless Lite HP model
is supplied with an immersion heater and a thermostat.
It is recommended that a thermostat is fitted which brings the
immersion heater ‘on’ at a temperature just below the heat
pump maximum and switches off at 60˚C or 65˚C. In this
way the use of ‘direct’ electricity is minimised and most of the
water heating is achieved through the heat pump.
The key features of the Stainless Lite HP SOL are:
• The latest and highest quality Duplex Stainless Steel.
• A 25 year guarantee.
• Fast reheat rate from its purpose designed low
resistance coil.
• One of the highest insulation ratings on offer today.
• The Stainless Lite HP SOL is supplied with all the
necessary connections including two dry thermostat
pockets.
13
Solarpumping
station
Solar circuitzone valve
Central heating�ow and return
Central heating zone valve
Heat pump
PRV
Expansionvessel
Hot water zone valve
System pump
PRV
Primary circuitsealed system kit
Stainless Lite HP system (with optional solarpanels) for use on a sealed heating system.(See our Technical Manual for otherinstallation options)
Stainless Lite HP SOL system (with optional solar panels) for use on a sealed heating system.
Stainless Lite HP SOL Technical Specification
Description HP180INDSOL HP210INDSOL HP250INDSOL HP300INDSOL HP400INDSOL
Product Stock Code ASL180HP ASL210HP ASL250HP ASL300HP ASL400HP
Energy Efficiency Class B C C C D
Heat Loss watts 54 65 75 85 118
Capacity litres 180 210 250 300 400Height mm 1305 1495 1745 1992 2030Diameter mm 550 550 550 550 630Weight (empty) kg 33 38 43 49 61Weight (full) kg 213 248 293 349 461Pressure regulator bar 3 3 3 3 3Expansion vessel size litres 18 24 24 35 2 X 24kW rating of heat pump coil kW 24.3 26.2 27.5 34.2 47.2Heat pump coil pressure loss bar 0.048 0.054 0.060 0.019 0.027Surface area of heat pump coil m2 1.36 1.56 1.94 2.04 2.91Surface area of solar coil m2 0.680 0.680 0.970 0.970 1.270Dedicated solar volume litres 65 75 90 105 130
Model Selection Guide
Maximum hot water demandMaximum solarpanel area (m2)
BedroomsModel (without
solar heating input)Model (with solar
heating input)
1 bathroom 2.6 1-3 HP180INDSOL HP180INDSOL1 bathroom & separate shower room 3.0 2-3 HP180INDSOL HP210INDSOL1 bathroom & 2 separate shower rooms 3.6 2-3 HP180INDSOL HP250INDSOL2 bathrooms & separate shower room 4.2 2-4 HP210INDSOL HP300INDSOL2 bathrooms & 2 separate shower rooms 5.2 2-4 HP250INDSOL HP400INDSOL2 bathrooms & 2 separate shower rooms - 3-5 HP300INDSOL -2 bathrooms & 3 separate shower rooms - 4-5 HP400INDSOL -
Notes:
1 All connections are supplied with compression fittings for direct connection to copper pipework.2 Thesuggestedmodelsizesshownarebasedonatypicaldayshotwateruseassumingthattheheatpumpwillheatthedomestichotwatertoapproximately50˚C.3 When connecting to solar heating input, it is important to check the dedicated solar volume is suitable for the total floor area to comply with Building Regulations.4 The Stainless Lite HP units are the same whether you are running solar thermal systems in conjunction with heat pump or just using a heat pump input only.5 The solar dedicated volume is only applicable when used in conjunction with solar thermal systems.6 When selecting a solar model, it is important to check the dedicated solar volume is suitable for either the total floor area of the dwelling or the total net area of the
solar panel to ensure compliance with Building Regulations.7 Maximum solar panel area is calculated based on 25 l/m2 of net solar panel area.8 HeatpumpkWratingperformedat80˚Cand0.25l/s.
14
Slimline Heat PumpStainless steel unvented heat pump cylinders designed for restricted spaces
In situations where you want to upgrade a standard cylinder
with a heat pump installation, you will constantly come up
against the problem of installing a standard diameter unit
into a small cupboard space, common in older properties.
As a result, in addition to our existing Stainless Lite standard
heat pump range, we have developed the new Stainless Lite
Slimline HP which has a reduced diameter of 475mm.This
now enables installers to fit the new cylinders into smaller
properties or older homes where there are space limitations,
and so provide the benefits of mains pressure hot water.
The new range of Stainless Lite Slimline HP cylinders come
in 180 litres and 210 litres sizes.
Utilising the well established Gledhill Stainless Lite unvented
hot water cylinder, this product has been developed to
maximise lower temperatures available from the heat pump.
Although the cylinder has a reduced diameter, it still has
Model Selection Guide
Maximum hot water demand Bedrooms Model
1 bathroom 1-3 HP180SL1 bathroom & separate shower room 2-3 HP180SL1 bathroom & 2 separate shower rooms 2-3 HP180SL2 bathrooms & separate shower room 2-4 HP210SL
Notes:
1 All connections are supplied with compression fittings for direct connection to copper pipework.2 Thesuggestedmodelsizesshownarebasedonatypicaldayshotwateruseassumingthattheheatpumpwillheatthedomestichotwatertoapproximately50˚C.3 HeatpumpkWratingperformedat80˚Cand0.25l/s.
a 3m2 high performance corrugated coil which has been
specifically designed for maximum heat transfer. The heat
exchanger is a totally new design. It consists of a multi-
pass corrugated stainless steel tube in parallel to reduce
the pressure loss whilst maximising the heat exchange and
ensuring high flow rates essential to work with heat pumps.
Due to the fact that many heat pumps will not raise the
stored water temperature to 60˚C, which is necessary to
prevent the growth of legionella, the Stainless Lite Slimline
HP model is supplied with an immersion heater and a
thermostat.
It is recommended that a thermostat is fitted which brings the
immersion heater ‘on’ at a temperature just below the heat
pump maximum and switches off at 60˚C or 65˚C. In this
way the use of ‘direct’ electricity is minimised and most of the
water heating is achieved through the heat pump.
Stainless Lite Slimline HP Technical Specification
Description HP180SL HP210SL
Product Stock Code ASL180HPSL ASL210HPSL
Energy Efficiency Class C C
Heat Loss watts 76 84
Capacity litres 180 210Height mm 1790 1970Diameter mm 475 475Weight (empty) kg 33 37Weight (full) kg 213 247Capacity litres 180 210Pressure regulator bar 3 3Expansion vessel size litres 18 24kW rating of heat pump coil kW 32.8 31.2Heat pump coil pressure loss bar 0.018 0.018Surface area of heat pump coil m2 3.01 3.01
15
Buffer StoreVented store for use with heat pump systems
Buffer vessels are simply a duplex stainless steel tank that
contains a volume of water, increasing the overall volume of
the heating distribution system. This extra volume of water
is designed to absorb any extra heat generated by the heat
pump in low load conditions.
If the building cannot absorb the extra heat generated
the return temperature to the heat pump will increase
and will potentially cause the heat pump to turn off. If the
temperature drops in the water returning to the heating
appliance, then it will turn itself back on. If this cycling
occurs at a greater frequency than the minimum run time for
the appliance, this is classed as short cycling. The aim of a
buffer vessel is to remove the possibility of any short cycling
of the heating appliance.
These buffer vessels are designed to work at up to 3.5 bar
pressure for primary water only. They should not be used
for potable domestic hot water and are not approved for this
purpose.
Stainless Lite Direct Buffer Store Technical Specification
Description 90D 120D 210D 300D 400D
Product Stock Code ASLD90BUFFER ASLD120BUFFER ASLD210BUFFER ASLD300BUFFER ASLD400BUFFER
Energy Efficiency Class B B C C D
Heat Loss watts 35 44 65 85 118
Capacity litres 90 120 210 300 400
Height mm 745 930 1495 1992 2030
Diameter mm 550 550 550 550 630
Weight (empty) kg 13 18 28 37 51
Weight (full) kg 103 138 238 337 451
Stainless Lite Indirect Buffer Store Technical Specification
Description 120IND 210IND 300IND 400IND
Product Stock Code ASLIND120BUFFER ASLIND210BUFFER ASLIND300BUFFER ASLIND400BUFFER
Energy Efficiency Class B C C D
Heat Loss watts 44 65 85 118
Capacity litres 120 210 300 400
Height mm 930 1495 1992 2030
Diameter mm 550 550 550 630
Weight (empty) kg 22 33 44 55
Weight (full) kg 142 243 344 455
16
Flexible Buffer StoreVented store for use with multiple heat pumps or additional heat sources
Stainless Lite Flexible Buffer Store Technical Specification
Description 90FLX 120FLX 210FLX 250FLX 300FLX 400FLX
Product Stock Code ASL90BUF ASL120BUF ASL210BUF ASL250BUF ASL300BUF ASL400BUF
Energy Efficiency Class B B C C C D
Heat Loss watts 35 44 65 75 85 118
Capacity litres 90 120 210 250 300 400
Height mm 745 930 1495 1745 1992 2030
Diameter mm 550 550 550 550 550 630
Weight (empty) kg 13 18 28 32 37 51
Weight (full) kg 103 138 238 282 337 451
Maximum working pressure - cylinder bar 3.5 3.5 3.5 3.5 3.5 3.5
Maximum working pressure - space heating bar 3.5 3.5 3.5 3.5 3.5 3.5
Tappings mm 28 28 35 35 35 35
UpperPlain PipeConnections
LowerPlain PipeConnections
High LevelStat
Low LevelStat
InspectionHatch
22mm Compression
½ " BSPFitting forDrain Valve
The Buffer Store range has been extended providing
multiple connections. This not overcomes the issue of
connecting multiple heat pump units to a single store, but
you are now also able to connect a wood burning stove
and open vented gas boiler (subject to correct controls
being installed), making the Flexible Buffer Store the perfect
solution. This allows you to utilise multiple heat sources to
boost the temperature of the water within the store initially
generated by the heat pumps.
In addition to the multiple inputs, the Flexible Buffer Store
also allows installers to connect a heating circuit to the
cylinder to provide heating to the property.
These buffer vessels are designed to work at up to 3.5 bar
pressure for primary water only. They should not be used
for potable domestic hot water and are not approved for this
purpose.
17
StainlessLite Triple CoilOpen vented cylinders for use with multiple heat sources
Stainless Lite Triple Coil Technical Specification
Description IND300-STC IND400-STC
Product Stock Code
Energy Efficiency Class C D
Heat Loss watts 85 118
Capacity litres 300 400
Height mm 1992 2030
Diameter mm 550 630
Weight (empty) kg 46 60
Weight (full) kg 346 460
kW rating of primary coil kW 20.5 20.5
Surface area of solar coil m2 0.97 1.27
Dedicated solar volume litres 100 150
Maximum solar panel area m2 4.0 6.0
Notes:
1 All connections are supplied with compression fittings for direct connection to copper pipework.2 When selecting a solar model, it is important to check the dedicated solar volume is suitable for either the total floor area of the dwelling or the total net area of the
solar panel to ensure compliance with Building Regulations.3 Maximum solar panel area is calculated based on 25l/m2 of net solar panel area.
To satisfy the growing demand for a stainless steel cylinder
being capable of accepting multiple heat sources, Gledhill
has developed a triple coil version of the Stainless Lite
cylinder, which can accept solar and uncontrolled heat
sources such as solid fuel or wood burning appliances.
The cylinder has a dedicated solar coil at the bottom of
the cylinder. It then has a double coil for the solid fuel heat
supply and a single coil for the gas/oil boiler. It also has a
back up heat source in the form of an immersion heater.
The three separate coils will work independently providing
the maximum heat to the store, and subsequently reduce
the households fuel bills. The boiler coil and solar coil are
both 22mm and the solid fuel gravity circulation are 28mm.
18
StainlessLite VentedUnvented cylinders converted for use with uncontrolled heat sources
The only difference between the vented and unvented range
of Stainless Lite cylinders is that instead of being supplied
with the unvented kit, the vented option is supplied with a
control thermostat and a drain valve.
The technical and dimensional data for the Stainless Lite
vented is the same as the Stainless Lite and Stainless Lite
Solar, both of which are available in direct and indirect
configurations. Full technical details can be found on pages
5-8 in this brochure.
The Stainless Lite vented option provides a high quality
open vented stainless steel cylinder for use in a traditional
vented cylinder installation. As an open vented cylinder, it
also permits the connection of an uncontrolled heat source
such as a solid fuel or wood burning appliance, which is not
permitted with an unvented cylinder. Please note when using
in this application, a fully pumped system will be required.
The traditional vented storage water heater has a proven
track record of reliability and safety. The operating pressure
is dictated by the vertical distance between the cistern tank
and the bottom of the heater.
The open vented system is renowned for its safety because
the open vent that discharges in to the cistern tank
automatically equalises any excess pressure or vacuum.
The Stainless Lite vented cylinder is fully compliant with
2010 Part L regulations, therefore it now enables you to fit a
vented cylinder into a new build property.
19
Up against time to replace that cylinder?
The required model is not stocked at the
merchant?
Then the obvious choice has to be
the complete cylinder service
PLACE YOUR ORDER STOCKED LOCALLY DELIVERED NEXT DAY
* The same day collection service is subject to orders before 1pm** Not applicable to all postcode regions in Scotland, please speak to Inverkeithing depot for further details
Ordering your urgently required unvented cylinder couldn’t be simpler;
• Place your order at the merchant• Order is sent to one of our nationwide depots where the core range
of cylinders stocked• Same day collection available from the local depot*• Next day delivery to any mainland UK address at no extra cost**
“Only the bestis acceptable” FM 02057
Blackpool
Head Office and
Stainless Steel Manufacturing Site
Blackburn
Telephone: 01254 693844
Fax: 01254 673615
Bristol
Telephone: 01179 820814
Fax: 01179 820821
Inverkeithing
Telephone: 01383 414133
Fax: 01383 413123
Luton
Telephone: 01582 728253
Fax: 01582 318976
Maidstone
Telephone: 01622 714770
Fax: 01622 882286
UK Super Depot InfrastructureNottingham
Telephone: 01773 580684
Fax: 01773 581129
Oldbury
Telephone: 01384 636245
Fax: 01384 413700
Paignton
Telephone: 01803 557470
Fax: 01803 559213
Southampton
Telephone: 01329 846601
Fax: 01329 845881
For technical adviceplease call
01253 474584
SUPPLIERS TO THE MERCHANT TRADE FOR OVER 40 YEARS
Gledhill Building Products LimitedSycamore Estate, Squires Gate, Blackpool FY4 3RL Tel: 01253 474550 Fax: 01253 474551 [email protected]
Due to a programme of continuous improvement Gledhill Building Products reserve the right to modify products without prior notice.It is advisable to check the product technical detail by using the latest design and installation manuals available from our technical support team or on our website.
It is an offence to copy or adapt this document without consent of the owner.
Gledhill Building Products produce cylinders for use with a wide range of heat sources including;
Gas and oil boilers Electricity Air source heat pumps Ground source heat pumps Solar energy Wood burning stoves
Further information on Gledhill products can be found on the internet at www.gledhill.net
Spec 103/09 09/15