Tech Info
StainlessLite
Unvented mains pressure water storage in Duplex stainless steel
Design, Installation & Servicing Instructions
Models covered in this manual
Stainless Lite Direct 90-400 litres
Stainless Lite Indirect 90-400 litres
Stainless Lite Solar Direct 180-400 litres
Stainless Lite Solar Indirect 180-400 litres
Stainless Lite Slimline Direct 60-210 litres
Stainless Lite Slimline Indirect 60-210 litres
These instructions should be read in conjunction with the installation/servicing
instructions issued by the manufacturer of the heat source being used.
Any installation must be in accordance with the relevant requirements of the Gas
Safety Regulations, Building Regulations, I.E.E. Wiring Regulations and the Water Fitting
Regulations (England and Wales) or Water Byelaws (Scotland). It should be read in
accordance with the relevant recommendations of the following:
BS 6798; BS 5549; BS 5546;
BS 5440:1; BS 5440:2; CP 331:3
BS 6700: BS 5258 and BS 7593: 1992
ISSUE 14: 11-11
Section
Page
DESIGN
Description
Technical Information
System Design
3
6
10
Stainless Lite is covered by Section G3 of the Building Regulations (England and
Wales) Technical Standard P3 (Scotland) and Building Regulation P5 (Northern Ireland).
Compliance can be achieved via a Competent Person Self Certification Scheme or
notificaton of installation to the Local Authority Building Control Department.
INSTALLATION
Installation
Commissioning
12
22
It must be installed by a competent person as defined by the relevant regulations.
Manufacturers notes must NOT be taken as over-riding statutory obligations.
USER INSTRUCTIONS
23
SERVICING AND MAINTENANCE
Servicing and Maintenance
Fault Finding
Short Parts List
24
25
28
APPENDIX
Appendix A
Appendix B
29
30
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge unless
they have been given supervision or instruction concerning use of the appliance by
a person responsible for their safety. Children should be supervised at all times to
ensure they do not play with the appliance.
This information is provided to assist generally in the selection of equipment.
Responsibility for selection and specification of our equipment must however remain
that of our customer and any experts or consultants concerned with the installation(s).
Please note: that we do not therefore accept any responsibility for matters of
design selection or specification, for the effectiveness of an installation or system
containing one of our products unless specifically requested to do so in writing.
All goods are sold subject to our Conditions of Sale which are set out at the rear of this
specification. In the interest of continuously improving the Stainless Lite range, Gledhill
Building Products Limited reserve the right to modify the product without notice, and
in these circumstances this booklet, which is accurate at the time of printing, should
be disregarded. An updated set of Instructions will be produced and supplied with
new appliances and will be made available for other appliances on request.
A KIWA product approved to comply with all relevant parts of the
Building Regulations and Water Supply (Water Fittings) Regulations.
Visit www.kiwa.co.uk for more information.
Stainless Lite is produced under an ISO 9001:2008 Quality Management System
approved by BSI.
Benchmark places responsibilities on both manufacturers and installers.The purpose is to
ensure that customers are provided with the correct equipment for their needs, that it is
installed, commissioned and serviced in accordance with the manufacturers instructions
by competent persons and that it meets the requirements of the appropriate Building
Regulations. The Benchmark Checklist can be used to demonstrate compliance with
Building Regulations and should be provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work
in accordance with the Benchmark Code of Practice which is available from the
Heating and Hot Water Industry Council who manage and promote the Scheme.
Visit www.centralheating.co.uk for more information.
Page 2
Notes
31
Benchmark Checklist
Benchmark Service Record
32
33
Terms & Conditions
34
DESIGN
Maintenance
Manufacturer: Gledhill Building Products Ltd
Maximum inlet pressure to
Pressure reducing valve
Operating pressure (PRV setting)
Expansion vessel charge pressure
Expansion relief valve setting
Opening pressure of P & T Relief Valve
Opening temperature of P & T Relief Valve
Energy cut-out thermostat setting
Max. working pressure - Primary heat exchanger (Indirect models)
Max. working pressure - Solar heat exchanger (Solar models)
Immersion heater rating
12 bar
3 bar
3 bar
4.75 bar
6 bar
95°C
80°C
6 bar
10 bar
3kW, 240V AC
All cylinders are manufactured in accordance with the requirements of BS EN 12897
The tundish must be positioned so that it is visible to the occupant and is away from
electrical devices.
Components supplied with Stainless Lite:
• Cold water inlet PRV combination valve/expansion relief
• Pressure and temperature relief valve
• Control thermostat
• Energy cut-out thermostat
• Energy cut-out motorised valve (indirects only)
• Tundish
• 3kW Immersion heater
• Expansion vessel/mounting bracket/flexible hose
• Technical/user product literature
(Note: Please refer to tables 1 and 2 on pages 6-9 to confirm the quantity of immersion
heaters supplied with the unit)
In any situation where the volume of heated pipework (eg. secondary circulation
pipes or manifold pipework for multiple units) exceeds 10 litres, then an
additional expansion vessel must be fitted to accommodate the extra expansion
volume.
Handling Before Installation
Stainless Lite must be handled with care and stored the correct way up in a dry place.
Any manual handling/lifting operations will need to comply with the requirements of
the Manual Handling Operations Regulations issued by the H.S.E. The appliance can
be moved using a sack truck on the rear face although care should be taken and the
route should be even. In apartment buildings containing a number of storeys we would
recommend that the appliances are moved vertically in a mechanical lift. If it is proposed
to use a crane, expert advice should be obtained regarding the need for slings, lifting
beams etc.
A specific manual handling assessment is shown in Appendix B at the rear of this
manual.
Page 3
Modifications should not be made to this
product. Replacement par ts, including
immersion heaters, should be purchased from
Gledhill Building Products Limited, or agents
approved by them. Unvented hot water storage
vessels need regular routine checks, and these
are detailed below. It is for this reason that this
manual must always be left with the Stainless
Lite.
It is essential that these checks be carried out
at the time of boiler maintenance by a qualified
installer:
1. Manually open the relief valves in turn, and
check that water is discharged from the
valves and runs freely through the tundish
and out at the discharge point. Ensure that
the valves re-seat satisfactorily. (Note - the
water may be very hot).
2. It is important to check that the discharge
pipework is carrying the water away
adequately. Check for blockages etc. if it is
not.
3. Turn the mains water off and remove and
clean the strainer element in the Pressure
Reducing Valve.
4. Check the charge pressure in the expansion
vessel and repressurise if required
5. Re-fill the system and ensure that all relief
valves have re-seated.
6. The Benchmark Service Record should be
updated at each service.
7. Check the water pressure downstream of the
combination valve is 3 bar in static condition.
8. Check and if necessary, descale the heat
exchanger in hard water areas ie. above
200ppm (mg/l).
Note:
The cylinder is factory fitted with a temperature
& pressure relief valve that must not be used for
any other purpose or removed.
The cylinder is factory fitted with immersion
heaters with thermal cut outs. Immersions
without thermal cut outs must not be fitted.
DESCRIPTION
DESIGN
Figure 1
Figure 2
Stainless Lite is a range of unvented hot water
storage cylinders, manufactured in the latest
high quality duplex stainless steel. They are
designed to provide mains pressure hot water
and are supplied as a package which complies
with Section G3 of the Building Regulations.
The appliance is extremely well insulated using
high density HCFC free foam insulation with an
ozone depleting potential (ODP) of zero and a
global warming potential (GWP) of 1. It is fitted
with all necessary safety devices and supplied
with all the necessary control devices to make
installation on site as easy as possible.
Stainless Lite is available in four basic
variants:
Stainless Lite
DIRECT
Stainless Lite
INDIRECT
1. Stainless Lite Direct - For providing hot
water heated by electricity (Figure 1).
2. Stainless Lite Indirect - For use with gas
or oil boilers (Figure 2). Unvented cylinders
must not be used with solid fuel boilers or
steam as the energy source.
3. Stainless Lite Direct Solar - For providing
hot water by solar gains and electricity.
(Figure 3).
4. Stainless Lite Indirect Solar - For providing
hot water by solar gains and gas or oil boilers
(Figure 4). Unvented cylinders must not be
used with solid fuel boilers or steam as the
energy source.
Stainless Lite Direct
Stainless Lite direct is an electrically heated,
unvented hot water storage cylinder designed
primarily for use with off peak electrical
supplies.
Pipework is not supplied by manufacturer,
but to be supplied and fitted by installer.
It is supplied fitted with two 3kW immersion
heaters which are BEAB approved for safety as
recommended by the Electricity Council.
Stainless Lite direct models are listed in
Table 1 on Page 6 & 7.
Stainless Lite Indirect
Stainless Lite indirect is an unvented hot
water storage cylinder and is provided with a
high efficiency internal primary coil which is
designed for use with a gas or oil boiler and
is suitable for both open vented and sealed
pumped primary systems.
When used with a sealed heating system the
boiler must incorporate its own energy cut-out
overheat thermostat.
Stainless Lite indirect models are listed in
Table 2 on Page 8 & 9.
DESCRIPTION
Page 4
DESIGN
Figure 3
Figure 4
Stainless Lite Direct Solar
Stainless Lite direct is an electrically heated,
unvented hot water storage cylinder designed
primarily for use with off peak electrical
supplies.
It is supplied fitted with two 3kW immersion
heaters which are BEAB approved for safety as
recommended by the Electricity Council.
A high efficiency coil is positioned in the lower
part of the Stainless Lite vessel to ensure
maximum benefit of solar gain energy.
Stainless Lite direct models are listed in
Table 1 on Page 6 & 7.
Stainless Lite Indirect Solar
Stainless Lite indirect is an unvented hot
water storage cylinder and is provided with a
high efficiency internal primary coil which is
designed for use with a gas or oil boiler and
is suitable for both open vented and sealed
pumped primary systems.
When used with a sealed heating system the
boiler must incorporate its own energy cut-out
overheat thermostat.
Stainless Lite
DIRECT SOLAR
Stainless Lite
INDIRECT SOLAR
Pipework is not supplied by manufacturer,
but to be supplied and fitted by installer.
A high efficiency second solar coil is positioned
below the primary coil to ensure maximum
benefit of solar gain energy.
Stainless Lite indirect models are listed in
Table 2 on Page 8 & 9.
Note:
The cold supply elbow c/w drain tapping
must be fitted as shown in figs 1, 2, 3 and 4.
A flexible hose can then be connected to the
drain tapping and, providing the hose runs
below the lowest level of the cylinder, then
all the water contents can be drained out
by syphonic action. (The cold feed pipe dips
internally to the base of the cylinder.)
Page 5
DESCRIPTION
DESIGN
Solar Direct
B
C
F
K
P
R
E
E
M
L
F
D
D
N
C
B
A
A
Direct
732
920
1107
1295
1483
1733
2020
2040
550
550
550
550
550
550
550
630
490
678
865
1053
1241
1491
1777
1784
n/a
n/a
n/a
n/a
1127
1377
1577
1592
n/a
487
587
686
786
927
1077
1181
367
367
442
442
442
522
522
457
223
223
223
223
223
223
223
238
n/a
55
70
85
90
125
155
180
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
13
16
22
30
31
32
73
106
142
180
211
242
60
90
120
150
180
210
3
3
3
3
3
3
12
12
12
18
18
24
704
976
1284
1520
1790
2005
475
475
475
475
475
475
462
734
1006
1278
1548
1763
n/a
n/a
n/a
n/a
n/a
1580
n/a
n/a
650
785
921
1147
348
348
348
423
423
503
197
197
197
197
197
197
n/a
n/a
55
70
85
90
n/a
n/a
n/a
n/a
n/a
n/a
26
30
34
39
49
206
240
284
339
449
180
210
250
300
400
3
3
3
3
3
18
24
24
35
2 x 24
1295
1483
1733
2020
2040
550
550
550
550
630
1053
1241
1491
1777
1784
n/a
1127
1377
1577
1592
746
908
1092
1287
1296
437
437
522
522
557
482
544
629
724
691
75
80
100
115
140
n/a
n/a
n/a
n/a
n/a
32
36
212
246
180
210
3
3
18
24
1790
2005
475
475
1548
1763
n/a
1589
1090
1190
423
503
640
730
75
80
n/a
n/a
TECHNICAL INFORMATION
Page 6
Dual Control & Overheat Stat
12
12
18
18
24
24
35
2 x 24
Volume of On Peak Water
Heated
3
3
3
3
3
3
3
3
Off Peak Immersion
Heater - Low Level
90
120
150
180
210
250
300
400
Cold Feed 22mm
Compression Connection
103
138
172
204
238
282
337
448
On Peak Immersion
Heater - High Level
13
18
22
24
28
32
37
48
Litres A=mm mm
22mm Secondary
Return Tapping
bar
Pressure & Temperature
Relief Valve 6bar 95°C
Litres
Overall Diameter
Pressure Regulator 3 bar inlet
group c/w balance cold supply,
expansion vessel connection and
expansion valve set at 4.75 bar
kg
Overall Height
Capacity (Total Volume)
kg
Expansion Vessel size.
Pre-charged to 3 bar
Weight - Full
Direct
D90
D120
D150
D180
D210
D250
D300
D400
Direct Slimline
D60-SL
D90-SL
D120-SL
D150-SL
D180-SL
D210-SL
Solar Direct
SOL180d
SOL210d
SOL250d
SOL300d
SOL400d
Solar Direct Slimline
SOL 180d-SL
SOL 210d-SL
Weight - Empty
Model
Table 1 - Direct Models
B=mm C=mm D=mm E=mm F=mm Litres G=mm
DESIGN
NOTES
0º
35,0
º
40,0
0º
Surface Area of
Primary Heater Coil
Pressure Loss Across
Primary Heater Coil
Surface Area of
Solar Heater Coil
Pressure Loss Across Solar
Heater Coil
Heat Up Time from 15°C to 60°C
(applies to Primary Heat Source only)
min
Solar Pocket
bar
Solar Pocket
m2
Dual Control & Overheat Stat
bar
22mm Solar Flow
Compression Connection
m2
22mm Solar Return
Compression Connection
kW
22mm Primary Return
Compression Connection
(28mm tails for 400 litre model)
22mm Primary Flow
Compression Connection
(28mm tails for 400 litre model)
H=mm I=mm J=mm K=mm L=mm M=mm N=mm P=mm R=mm
Extra Stat Pocket
For Boiler Use If Required
kW Rating of Primary Coil
0º
Second Off Peak Immersion
Heater - Low Level
0
45,
Dedicated Solar Volume
25,00
Standing Losses kWhr/24hr
15,00º
Recovery Time after 70% Draw Off
(applies to Primary Heat Source only)
1. Not all models - see table 1.
2. Recovery times based on Primary
Coil/I.H. duty (ie. assumes the boiler
output is adequate).
3. All connections are supplied with
compression fittings for direct
connection to copper pipework.
4. The heat up times shown for
the D400 model indicate the
times when 1 or 2 immersions are
connected.
5. The diagrams shown are generic.
For exact product specification
refer to the table eg. the number
of immersion heaters varies
depending on model.
6. Heat up and recovery times based
on 0.25 l/s primary flow rate and at
82°C flow temperature.
min
kWh
Litres
0.80
1.00
1.20
1.40
1.60
1.75
1.93
3.33
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
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n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
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n/a
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n/a
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n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
338
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
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n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
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n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
60
90
119
150
179
209
39
58
90
121
157
192
0.95
1.25
1.52
1.77
2.01
2.23
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
223
223
223
223
238
352
352
472
472
548
419
419
539
539
651
882
1000
1180
1367
1383
203
203
262
262
334
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
0.680
0.680
0.970
0.970
1.270
0.191
0.191
0.241
0.241
0.310
n/a
n/a
n/a
n/a
n/a
90
115
139
187
260
1.40
1.60
1.75
1.93
3.33
60
70
84
100
150
n/a
n/a
n/a
n/a
n/a
n/a
179
179
329
409
678
778
1263
1363
243
273
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
0.680
0.680
0.191
0.191
n/a
n/a
90
115
2.01
2.23
60
70
Page 7
90
58
119
90
150
121
179
157
209
192
249
224
299
263
398/198 358/179
TECHNICAL INFORMATION
DESIGN
Indirect
C
J
D
I
K
I
P
E
M
L
E
H
F
J
G
D
G
N
C
B
B
A
A
Solar Indirect
732
920
1107
1295
1483
1733
2020
2040
550
550
550
550
550
550
550
630
490
678
865
1053
1241
1491
1777
1784
n/a
n/a
n/a
n/a
1127
1377
1577
1592
352
352
392
432
432
927
1242
1166
367
367
442
442
442
522
522
557
n/a
n/a
n/a
n/a
n/a
512
512
601
40
67
92
116
145
109
130
180
367
367
407
447
482
577
677
684
14
19
23
28
31
34
74
109
143
178
211
244
60
90
120
150
180
210
3
3
3
3
3
3
12
12
12
18
18
24
704
976
1248
1520
1790
2005
475
475
475
475
475
475
462
734
1006
1278
1548
1763
n/a
n/a
n/a
n/a
n/a
1589
352
392
432
462
512
512
348
348
348
423
503
503
n/a
n/a
n/a
n/a
n/a
n/a
28
54
75
102
125
150
242
359
423
514
604
695
30
35
40
46
59
210
245
290
346
459
180
210
250
300
400
3
3
3
3
3
18
24
24
35
2 x 24
1295
1483
1733
2020
2040
550
550
550
550
630
1053
1241
1491
1777
1784
n/a
1127
1377
1577
1592
574
614
1042
1155
1129
437
437
522
522
557
n/a
n/a
n/a
n/a
n/a
80
95
115
140
190
747
867
994
1130
1053
33
37
213
247
180
210
3
3
18
24
1790
2005
475
475
1548
1763
n/a
1589
1044
1130
423
503
n/a
n/a
75
85
897
1083
TECHNICAL INFORMATION
Page 8
Dual Control & Overheat Stat
12
12
18
18
24
24
35
2 x 24
Volume of On Peak Water
Heated
3
3
3
3
3
3
3
3
Off Peak Immersion
Heater - Low Level
90
120
150
180
210
250
300
400
Cold Feed 22mm
Compression Connection
109
142
176
208
243
288
344
455
On Peak Immersion
Heater - High Level
19
22
26
28
33
38
44
55
Litres A=mm mm
22mm Secondary
Return Tapping
bar
Pressure & Temperature
Relief Valve 6bar 95°C
Litres
Overall Diameter
Pressure Regulator 3 bar inlet
group c/w balance cold supply,
expansion vessel connection and
expansion valve set at 4.75 bar
kg
Overall Height
Capacity (Total Volume)
kg
Expansion Vessel size.
Pre-charged to 3 bar
Weight - Full
Indirect
IND90
IND120
IND150
IND180
IND210
IND250
IND300
IND400
Indirect Slimline
IND60-SL
IND90-SL
IND120-SL
IND150-SL
IND180-SL
IND210-SL
Solar Indirect
SOL180i
SOL210i
SOL250i
SOL300i
SOL400i
Solar Indirect Slimline
SOL180i-SL
SOL210i-SL
Weight - Empty
Model
Table 2 - Indirect Models
B=mm C=mm D=mm E=mm F=mm Litres G=mm
DESIGN
NOTES
1. Not all models - see table 2.
2. Recovery times based on Primary
Coil/I.H. duty (ie. assumes the boiler
output is adequate).
3. All connections are supplied with
compression fittings for direct
connection to copper pipework.
4. The diagrams shown are generic.
For exact product specification
refer to the table eg. the number
of immersion heaters varies
depending on model.
5. Heat up and recovery times based
on 0.25 l/s primary flow rate and at
82°C flow temperature.
15,00º
25,00
0º
35,0
º
40,0
0º
Surface Area of
Primary Heater Coil
Pressure Loss Across
Primary Heater Coil
Surface Area of
Solar Heater Coil
Pressure Loss Across Solar
Heater Coil
Heat Up Time from 15°C to 60°C
(applies to Primary Heat Source only)
Recovery Time after 70% Draw Off
(applies to Primary Heat Source only)
Standing Losses kWhr/24hr
Dedicated Solar Volume
min
min
kWh
Litres
Solar Pocket
bar
Solar Pocket
m2
Dual Control & Overheat Stat
bar
22mm Solar Flow
Compression Connection
m2
22mm Solar Return
Compression Connection
kW
22mm Primary Return
Compression Connection
(28mm tails for 400 litre model)
22mm Primary Flow
Compression Connection
(28mm tails for 400 litre model)
H=mm I=mm J=mm K=mm L=mm M=mm N=mm P=mm R=mm
Extra Stat Pocket
For Boiler Use If Required
kW Rating of Primary Coil
0º
Second Off Peak Immersion
Heater - Low Level
0
45,
367
367
407
447
482
577
677
684
223
223
223
223
223
223
223
238
312
312
392
392
392
472
522
548
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
16.5
18
18.5
19
20.5
21.5
25
30.5
0.59
0.59
0.68
0.78
0.78
0.97
0.97
1.27
0.165
0.165
0.191
0.216
0.216
0.241
0.241
0.310
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
21
27
28
33
41
44
48
55
16
19
19
21
26
30
32
36
0.80
1.00
1.20
1.40
1.60
1.75
1.93
3.33
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
242
359
423
514
604
695
179
179
179
179
179
179
329
329
329
409
449
449
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
15
16.5
18
18.5
19.0
20.5
0.59
0.59
0.59
0.68
0.78
0.78
0.165
0.165
0.165
0.191
0.216
0.216
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
14
21
27
28
33
41
11
16
19
19
21
26
0.95
1.25
1.52
1.77
2.01
2.23
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
1076
614
654
702
815
766
834
914
1002
1115
1026
223
223
223
223
238
352
352
472
472
548
419
419
539
539
651
882
1000
1180
1367
1383
218
233
294
300
357
n/a
n/a
n/a
n/a
n/a
18
18.5
19
20.5
22
0.59
0.68
0.78
0.78
0.97
0.165
0.191
0.216
0.216
0.241
0.680
0.680
0.970
0.970
1.270
0.191
0.191
0.241
0.241
0.310
28
35
38
41
45
16
16
19
20
24
1.40
1.60
1.75
1.93
3.33
96
101
107
125
165
n/a
n/a
619
710
1004
1095
179
179
320
409
583
673
1232
1383
243
273
n/a
n/a
18
18.5
0.59
0.68
0.165
0.191
0.680
0.680
0.191
0.191
28
35
16
16
2.01
2.23
60
70
Page 9
TECHNICAL INFORMATION
DESIGN
Stainless Lite Direct
1
Basic Appliance
1. Hot water draw off (22mm) compression
2. Temperature & pressure relief valve 95°/6 bar
3. Hot water secondary return 22mm
(not fitted to smaller sizes, see table 1)
4. Immersion heater 1¾” BSP 3kW
(normally on-peak)
5. 22mm cold supply compression
6. Immersion heater 1¾” BSP 3kW
(normally off-peak)
7. Immersion heater 1¾” BSP 3kW
(normally off-peak - 400 litre model only)
2
3
4
Component kit supplied separately
A. Combination inlet group incorporating
pressure reducing valve, strainer, check
valve, balance cold take off point, expansion
relief valve and expansion vessel connection
points.
B. Portable expansion vessels c/w flexible hose
and wall bracket
C. Tundish
5
7
6
Stainless Lite Indirect
1
Basic Appliance
1. Hot water draw off (22mm) compression
2. Temperature & pressure relief valve 95°/6 bar
3. Hot water secondary return 22mm
(not fitted to smaller sizes, see table 2)
4. Immersion heater 1¾” BSP 3kW
5. 22mm cold supply compression
6. Immersion heater 1¾” BSP 3kW
7. Dual control/overheat stat pocket (22mm)
8. Boiler control sensor pocket (spare)
9. Primary return (22mm)
- (28mm tails for 400 litre models)
10. Primary flow (22mm)
- (28mm tails for 400 litre models)
2
3
4
7
8
6
Component kit supplied separately
A. Combination inlet group incorporating
pressure reducing valve, strainer, check
valve, balance cold take off point, expansion
relief valve and expansion vessel connection
points.
B. Potable expansion vessels c/w flexible hose
and wall bracket
C. Tundish
D. Dual control thermostat and combined
overheat thermostat
E. Two port (22mm) zone valve for
primary circuit
F. Wiring junction box for primary system
5
10
9
Typical arrangement of component kit shown fitted to the appliance for clarity
Pipework to be supplied and fitted by installer.
SYSTEM DESIGN
Page 10
DESIGN
1
2
3
10
4
6
7
9
10
5
8
1
2
3
12
9
7
6
11
12
4
8
Stainless Lite Direct Solar
Basic Appliance
1. Hot water draw off (22mm) compression
2. Temperature & pressure relief valve 95°/6 bar
3. Hot water secondary return 22mm
(not fitted to smaller sizes, see table 1)
4. Immersion heater 1¾” BSP 3kW
(normally on-peak)
5. 22mm cold supply
6. Immersion heater 1¾” BSP 3kW
(normally off-peak)
7. Dual control/Overheat stat pocket
8. Solar coil return to panel collector (22mm)
compression
9. Solar coil flow from panel (22mm) compression
10. Solar thermostat pocket
Component kit supplied separately
A. Combination inlet group incorporating pressure
reducing valve, strainer, check valve, balance
cold take off point, expansion relief valve and
expansion vessel connection points.
B. Portable expansion vessels c/w flexible hose
and wall bracket
C. Tundish
D. Dual control thermostat and combined
overheat thermostat
Stainless Lite Indirect Solar
Basic Appliance
1. Hot water draw off (22mm) compression
2. Temperature & pressure relief valve 95°/6 bar
3. Hot water secondary return 22mm
(not fitted to smaller sizes, see table 2)
4. Immersion heater 1¾” BSP 3kW
5. 22mm cold supply
6. Dual control/Overheat stat pocket
7. Primary return (22mm)
- (28mm tails for 400 litre models)
8. Primary flow (22mm)
- (28mm tails for 400 litre models)
9. Dual control/Overheat stat pocket
10. Solar coil return to panel collector (22mm)
compression
11. Solar coil flow from panel (22mm) compression
12. Solar thermostat pocket
5
10
Typical arrangement of component kit shown fitted to the appliance for clarity
Pipework to be supplied and fitted by installer.
Page 11
Component kit supplied separately
A. Combination inlet group incorporating pressure
reducing valve, strainer, check valve, balance
cold take off point, expansion relief valve and
expansion vessel connection points.
B. Potable expansion vessels c/w flexible hose
and wall bracket
C. Tundish
D. Dual control thermostat and combined
overheat thermostat (x2)
E. Two port (22mm) zone valve for
primary circuit
F. Wiring junction box for primary system
SYSTEM DESIGN
INSTALLATION
General Design Considerations
The cupboard footprint needs to be at least
650mm square for standard units up to 300 litres,
730mm for 400 litre and 575mm for slimline units.
The base chosen for the cylinder should be level
and capable of supporting the weight of the unit
when full of water as shown in General Data. The
discharge pipework for the safety valves must have
a minimum fall of 1 : 200 from the unit to a safe
discharge point. All exposed pipework should be
insulated and the unit should NOT be fixed in a
location where the contents could freeze.
The pipe connecting the boiler flow to the
appliance must not be less than 22mm copper
or equivalent.
Combination Valve
I.V.
I.V.
Mains Water Supply
If two Stainless Lites are coupled together the secondary inlet and outlet pipes must
be balanced. The units must be fitted on the same level.
Note: No valves must be fitted between the expansion vessel and the storage cylinder(s).
Standard and Slimline Model Selection Guide
Max hot water demand
Max number
of bed spaces
(Bedrooms)
1 shower room
1 bathroom
Indirect
litres
Direct
litres
Bedsit (0)
90
120
2 (2)
120
150
1 bathroom
4 (3)
120
180
1 bathroom + separate shower room
6 (4)
150
210
1 bathroom + 2 separate shower rooms
or 2 bathrooms
7 (5)
180
210
2 bathrooms + separate shower room
7 (5)
210
250
2 bathrooms + 2 separate shower rooms
7 (5)
250
300
3 bathrooms + 2 separate showers rooms
9 (6)
300
400
3 bathrooms + 3 separate showers rooms
9 (6)
400
-
Solar Model Selection Guide
Max hot water demand
Max floor
area (m2)
Bedrooms
Indirect
litres
Direct
litres
1 shower room
44
Bedsit
-
180
1 bathroom
44
1-3
180
1 bathroom
66
1-3
1 bathroom + 1 shower room
66
1-3
210
-
1 bathroom + 1 shower room
84
1-3
-
250
84
2-4
250
-
1 bathroom + 2 shower rooms
113
2-4
-
300
2 bathrooms + 1 shower room
113
3-4
300
-
2 bathrooms + 1 shower room
150
4-5
-
400
2 bathrooms + 2 shower rooms
150
4-5
400
-
Page 12
Model Selection
The suggested Direct model sizes, shown
opposite, 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.
When using the Direct models for high
specification developments an increase of one
model size should be considered.
210
1 bathroom + 2 shower rooms
INSTALLATION
Existing properties with a 15mm supply will be
satisfactory provided the local mains pressure is
good, but should be confined to single bathroom
properties. For new properties where simultaneous
demand is required to more than one bathroom
or a bathroom and one or more en-suites, the
communication and service pipe into the dwelling
should be a minimum of 22mm (usually in the
form of a 25mm MDPE supply). The minimum
recommended static pressure to operate a Stainless
Lite domestic system is 3 bar. There should be a flow
of at least 30 litres per minute or above available
into the property. Normally Stainless Lite provides
well in excess of 40 litres/min in most conditions.
Flow rates for ALL mains pressure systems are
subject to district pressures and system dynamic
loss. Particularly on larger properties with more
than one bathroom, the pipe sizes should be
calculated in accordance with BS6700.
Where selecting a solar model, it is important to
check the dedicated solar volume (shown in tables 1
& 2) is suitable for the total floor area of the dwelling
to ensure compliance with Building Regulations.The
maximum floor area of the dwelling permitted for
the models is shown opposite.
The suggested model sizes are based on
typical hot water usage. For high specification
dwellings an increase of one model size should
be considered.
INSTALLATION
General Restrictions
a. The highest hot or cold water draw off point should not exceed 10 metres above
the Pressure Reducing Valve.
b. An ascending spray type bidet or any other appliance with a Class 1 back-syphonage
risk requiring a type A air gap should not be used.
c. Stainless Lite should not be used where steam is the primary heating medium, or
in a situation where maintenance is likely to be neglected.
d. Unvented cylinders are not suitable for use with solid fuel boilers.
e. If the supply to the mixer fittings (other than a dual outlet type) is not taken
from the balanced supply the system will become over pressurized and cause
the pressure relief valve to discharge. Over time this could also cause the
premature failure of the appliance itself which will not be covered by the
warranty.
f. In larger properties with a number of bathrooms/en-suites and long pipe runs
we would recommend that the balance cold supply is provided with its own
pressure reducing valve and is not taken from the balanced cold connection on
the combination valve. In this case it will also be necessary to fit a small expansion
vessel on the balanced cold water system to accommodate the pressure rise caused
by the increase in temperature of the balanced cold water.
g. Check the performance requirements of the terminal fittings with regard to flow/
pressure are suitable.
h. In relation to potable water systems, expansion vessels shall be installed in a vertical
orientation and located so that the length of the connecting pipe work is kept to
a minimum.
the system is greater than normal. The shower
head provided must also be suitable for mains
pressure supplies.
Pipe Layout
In all mains pressure installations it is important
to remember that the incoming cold supply
must be shared between all terminal fittings. It
is important that a 22mm supply is brought to
the appliance and a 22mm take-off is continued
at least to the bath. If there are two baths, 28mm
pipework should be considered. One metre of
smaller diameter pipework, or flow restrictors,
should be provided on the final connection to
all outlets so as to balance the water available.
In any event the distribution pipework should
generally be in accordance with EN806:1.
Plastic Pipework
This appliance is suitable for use with plastic
pipework as long as the material is recommended
for the purpose by the manufacturer and is installed
fully in accordance with their recommendations.
Shower Fittings
Secondary Hot Water Circulation
Aerated taps are recommended to prevent splashing. Any type of shower mixing valve
can be used as long as both the hot and cold supplies are mains fed. However, all
mains pressure systems are subject to dynamic changes particularly when other hot
and cold taps/showers are opened and closed, which will cause changes in the water
temperature at mixed water outlets such as showers. For this reason and because
these are now no more expensive than a manual shower we strongly recommend
the use of thermostatic showers with this appliance. These must be used in 3 storey
properties where the impact on pressure/temperature of opening another tap in
Some models are fitted with a secondary
return tapping as standard (see tables 1 and 2
for details). If fitted, an extra expansion vessel
may be necessary. A non-return valve MUST be
FITTED near the return connection. No valve
or terminal fitting should be installed between
the non return valve and the cylinder. (See
schematic arrangement on page 15.)
DHW
SH
P&T
WHB
WC
ERV/NRV
PRV
SCV
SCV
BATH
Note:
Cold supplies to single taps must be
taken from the mains cold water
system.
Cold supplies to mixer taps must be
taken from the balanced cold water
connection on the combination
valve.
WM or DWM
WHB
SINK
TO
EXTERNAL
TAP
DC
W.C.
DCV
DC
DC
M
DC
WATER SOFTENER (IF NECESSARY)
DC
INCOMING COLD SUPPLY
Page 13
INSTALLATION
INSTALLATION
Pressure & Temperature/expansion Relief
Valve Pipework
Typical Discharge Pipe Arrangement
15 mm
discharge
pipe
Expansion
relief valve
The relief valve should be installed to discharge
in accordance with G3 of the Approved
Document of the Building Regulations and
should be piped to where it is visible, but will
not cause danger to persons or damage to
materials.
500 mm max.
P&T
Relief
Valve
Dotted line showing
alternative route with
single tundish being used
300 mm
min.
Discharge below
fixed grating
22 mm metal pipe with continuous
fall up to 9m equivalent length (D2).
NOTES:
Fixed Grating
The discharge will consist of scalding
waterand steam. Asphalt, roofing felt
and non-metallic rainwater goods may
be damaged by such discharges.
It is not acceptable to discharge straight
into a soil pipe.
Trapped gully
Worked Example
The example below is for G1/2 temperature relief valve with a discharge pipe (D2)
having 4 elbows and length of 7m from the tundish to the point of discharge.
From the table below:
Maximum resistance allowed for a straight length of 22mm copper discharge
pipe (D2) from a G1/2 temperature relief valve is: 9m subtract the resistance for
4 x 22mm elbows at 0.8m each = 3.2m.
Therefore the maximum permitted length equates to: 5.8m.
5.8m is less than the actual length of 7m therefore calculate the next largest size.
Maximum resistance allowed for a straight length of 28mm pipe (D2) from a G1/2
temperature relief valve equates to: 14m.
As the actual length is 7m, a 28mm (D2) copper pipe will be satisfactory.
Sizing of copper discharge pipe ‘D2’ for a temperature relief valve
with a G1/2 outlet size (as supplied)
Size of discharge
pipework
Maximum length of
straight pipe
(no bends or elbows)
Deduct the figure
below from the
maximum length for
each bend or elbow in
the discharge pipe
22mm
Up to 9m
0.8m
28mm
Up to 18m
1m
35mm
Up to 27m
1.4m
The following information is taken from
Approved Document G3 of the Building
Regulations and is provided to assist with
the design and installation of the discharge
pipework. However, the information is not
exhaustive and reference should always be
made to Approved Document G3 of the Building
Regulations. The final decision regarding any
arrangements rests with Building Control and
it is recommended that their advice is sought
if you have any concerns regarding this aspect
of the installation.
The two safety valves will only discharge
water under fault conditions. When operating
normally water will not be discharged.
The tundish should be vertical, located in the
same space as the unvented hot water storage
system and be fitted as close as possible and
within 500mm of the safety device e.g. the
temperature relief valve.
The discharge pipe (D2) from the tundish should
terminate in a safe place where there is no risk
to persons in the vicinity of the discharge, be
of metal and:
a) Be at least one pipe size larger than the
nominal outlet size of the safety device unless
its total equivalent hydraulic resistance
exceeds that of a straight pipe 9m long
i.e. discharge pipes between 9m and 18m
equivalent resistance length should be at
least two sizes larger than the nominal outlet
size of the safety device, between 18 and
27m at least 3 sizes larger, and so on. Bends
must be taken into account in calculating
the flow resistance. Refer to the table and
the worked example.
An alternative approach for sizing
discharge pipes would be to follow BS6700
Specification for design installation, testing
and maintenance of services supplying water
for domestic use within buildings and their
curtilages.
b) Have a vertical section of pipe at least
300mm long, below the tundish before any
elbows or bends in the pipe work.
c) Be installed with a continuous fall.
INSTALLATION
Page 14
INSTALLATION
d) It is preferable for the discharge to be visible at both the tundish and the final point
of discharge but where this is not possible or practically difficult there should be
clear visibility at one or other of these locations. Examples of acceptable discharge
arrangements are:
1. Ideally below the fixed grating and above the water seal in a trapped gulley.
2. Downward discharges at a low level; i.e. up to 100mm above external surfaces
such as car parks, hard standings, grassed areas etc are acceptable providing that
where children play or otherwise come into contact with discharges, a wire cage
or similar guard is positioned to prevent contact whilst maintaining visibility.
3. Discharges at a high level; e.g. into metal hopper and metal down pipe with the
end of the discharge pipe clearly visible (tundish visible or not) or onto a roof
capable of withstanding high temperature discharges of water and 3m from
any plastic guttering systems that would collect such discharges.
4. Where a single pipe serves a number of discharges, such as in blocks of flats,
the number served should be limited to not more than 6 systems so that any
installation can be traced reasonably easily. The single common discharge pipe
should be at least one pipe size larger than the largest individual discharge pipe
to be connected. If unvented hot water storage systems are installed where
discharges form safety devices may not be apparent i.e. in dwellings occupied by
blind, infirm or disabled people, consideration should be given to the installation
of an electronically operated device to warn when discharge takes place.
Safety
The safety devices supplied or fitted on an Stainless Lite are selected for their suitability
for the temperatures and pressures involved. They must not be changed, removed or
by-passed and it is essential that only genuine replacement parts supplied or approved
by Gledhill Building Products Limited are used. This includes the immersion heaters,
which must incorporate an energy cut-out. All parts are available to approved installers
from Gledhill Building Products Limited, Sycamore Estate, Squires Gate, Blackpool
(Telephone 01253 474402).
Combination Inlet Group
Schematic Diagram
Hot Outlet
Combines elements 1, 2 and 3 below.
Secondary
Return Circuit
1. Pressure Reducing Valve - This must be fixed
near the cylinder. The cold water supply to
any mixer taps/showers must be taken from
the cold water tapping of this valve to ensure
balanced hot and cold pressures. This valve
is factory set to ensure the correct operating
pressure for the Stainless Lite.
P&T Relief Valve
Tundish
Pump
Non Return
Valve
To Drain
Stop
Tap
Balanced
Cold
Outlets
Immersion Heater
ERV
Boiler
Flow
Kitchen
Cold
Tap
Expansion
Vessel
Boiler
Return
NRV
2. Non Return Valve - This is integral with the
pressure reducing valve to prevent backflow
of hot water towards cold water draw off
points.
2 Port Valve
PRV
Combination
Valve
Page 15
3. Cold Water Expansion Relief Valve - This safety
device is preset at the factory and will relieve
excess cold water pressure resulting from a
fault condition.
INSTALLATION
INSTALLATION
Pressure & Temperature Relief Valve
Safety
This safety device is also pre-set at the factory and relieves before the temperature
reaches 100°C. It is also a Pressure Relief Valve, and is pre-set to 6 bar.
The immersion heaters must be earthed and
they must be isolated from the mains before
the cover is removed on every occasion.
Replacement immersion heaters should be
obtained from Gledhill Building Products
Limited.
Thermostat
E
L
N
Control/overheat Dual Thermostats
Care must be taken to ensure that the solar
probes are fully inserted into the pockets
provided.
Anti Vacuum Valve
Safety
Cut-out
Important - failure to follow the drain down
procedure will invalidate the waranty.(see
page 22)
Immersion Heater Wiring
NEVER
Immersion Heaters
These are 3kW 240V AC heaters and incorporate a thermostat and a manually reset
energy cut-out which operates at 80°C. They have incalloy elements to prolong their
life expectancy in aggressive water conditions.
Please refer to tables 1 and 2 to clarify how many off peak and on peak immersions
are included with the unit you require.
Where it is intended that units are fitted to offpeak circuits, then suitable controllers
such as the Horstmann off peak electric time controller will be required. External
wiring to the immersion heaters must be in accordance with the relevant IEE Wiring
Regulations and the circuit must be protected by a suitable fuse and a double pole
isolating switch.
The correct method of terminating the wiring to the immersion heater is shown above.
Usage of the product in non-domestic commercial applications can be extremely
intensive and stressful to various components. We recommend that titanium
immersion heaters are fitted in such situations, rather than the incoloy heater
supplied as standard. Titanium immersion heaters offer superior strength, weight
and a smoother finish which enable them to better withstand the extreme stress
and temperature fluctuation often encountered within non-domestic environments
and situations where water quality is poor – ensuring improved performance and
extended operational life.
Line Strainer
This is integral within the combination inlet group to reduce the likelihood of
contaminants fouling the valve seat. Following installation this line strainer must be
cleaned and replaced. This needs to be carried out on a regular basis. as part of the
annual maintenance/service check.
Tundish
This is to allow the discharge from any Relief Valve to be seen. It must be fitted away
from any electrical devices. See page 14 for discharge pipework details.
INSTALLATION
Page 16
drain the cylinder of hot water and
then close all cylinder inlets and
outlets.
REASON as the air remaining in the cylinder
cools the pressure inside the
cylinder will fall below atmospheric
and cause the cylinder to implode.
NEVER
close the cold main and drain the
cylinder via any tap connected to it.
REASON as the water drains, the pressure
inside the cylinder may decrease
below atmospheric and this will
cause the cylinder to implode.
To stop the possibility of this occurring by
accident an ANTI VACUUM VALVE should be
fitted in the hot water take off pipe. This will
balance the cylinder’s internal and atmospheric
pressures and eliminate this risk.
Available from Gledhill part number GT056.
INSTALLATION
Schematic Open Vented Primary System
Heating/primary Systems
The boiler and primary/heating systems should
be sized and installed in accordance with BS 5449.
Warming/Overflow
Pipe
Safety
F & E Cistern
Minimum
distance as
required by
boiler
manufacturers
instructions
Stainless Lite is fitted with a Combined
Temperature/Pressure Relief Valve to cope
with any increase in system temperature and
pressure above the design limitations, when
used with boilers up to 45kW output, which
is the maximum allowed by section G3 of
the Building Regulations. The primary water
temperatures should be controlled as outlined
below.
Motorised Valve
(Energy cut-out)
Gate Valve
(Not supplied)
Motorised Valve
(Not supplied)
Pump
It is essential that the circuit between the boiler
and the Stainless Lite is pumped. The motorised
zone valve supplied should be fitted adjacent
to the unit and controlled by the cylinder
thermostat supplied. The thermostat and
motorised valve must be wired so that they both
switch off should an overheat situation develop.
It is important to follow the wiring diagram in
the Wiring Section of these instructions.
150mm max.
Boiler
Schematic Sealed Primary System
Sealed Primary Circuit
Any boiler used must be fitted with an over
temperature cut-out. Unvented primary circuits
may be filled or replenished by means of a
temporary connection between the circuit and
a supply pipe provided a ‘Listed’ double check
valve or some other no less effective backflow
prevention device is permanently connected
at the inlet to the circuit and the temporary
connection is removed after use.
Motorised Valve
(Energy cut-out)
Gate Valve
(Not supplied)
Expansion
Vessel
Safety Valve
Primary Circuit
Gauge
Motorised Valve
(Not supplied)
Pump
Alternatively, a CA device can be used, which will
allow the system to be permanently connected
to the cold mains supply. The primary system
can then be topped up, when required, in the
same way as an open vented system fitted with
an F&E Cistern.
Gate Valve
Boiler
All our cylinders are tested to BS EN 12897 at
15 l/mim at which they exceed the minimum
requirements for power performance and
reheat in less time than the maximum reheat
times. Excessive flow rates, above 25 l/min,
through the corrugated boiler coil can cause
noise. For this reason we advise the installation
of a gate valve on the return from the cylinder
to the boiler, before it joins the central heating
return, to reduce any excessive flow rates and
therefore any potential noise problems.
Page 17
INSTALLATION
INSTALLATION
All components in a solar primary system must
be marked or identifiable in such a way that
their design pressure and temperature can be
readily determined.
Schematic Solar Direct System
Solar Panel
A safety device (pressure relief valve) to control
the risk of over-pressure in system components
should be fitted. A termination from a safety
pressure device should minimise the risk of
damage to persons or materials. Suitable
locations are a high temperature receptacle, an
internal gully or else issue externally at ground
level. High level termination from walls or on
roofs could cause injury to people or animals
below if the valve were to release scalding water
and steam.
Solar
Controller
Expansion
Vessel
Motorised Valve
Energy cut-out
(Not supplied)
The pipe leading to the safety device and the
collector should be of rigid and non-deformable
construction, without any possibility of
restriction or disclosure by any other fitted
component.
Solar Pumping Station
A more detailed diagram of our recommended
arrangement for a typical solar system is shown
on page 20.
Schematic Solar Indirect System
Solar Panel
Motorised Valve
Energy cut-out
(Not supplied)
Solar
Controller
Expansion
Vessel
Motorised Valve
Energy cut-out
(Not supplied)
INSTALLATION
Solar Pumping Station
This provides all the necessary controls and
safety devices necessary for the solar system i.e.
the two port zone valve is wired as an energy
cut out and the pump/valve will only allow heat
transfer as required under control of the solar
controller.
The solar pocket provided accommodates an
8mm diameter sensor which, with the sensor
located in the solar collector (or in the flow
pipe immediately adjacent to the collector),
will provide the information required by the
solar controller.
Note: If the motorised valve is not used then
any factory built hydraulic station for solar
use MUST be fitted with suitable non-return
valves in both flow and return pipes to
prevent gravity circulation when the pump
is not running.
If there is a possibility of the solar controller that
you install causing the cylinder temperature to
exceed 80°C, under normal working conditions,
then a Solar tempering valve must be fitted to
the domestic hot water outlet of the cylinder.
This must limit the hot water temperature to
a maximum of 60°C.(ref building regulations
part G3 3.63). This product can be supplied from
Gledhill part number XC007 which has a inlet
temperature limit of 100°C. Suitable plumbing
configurations for installing this valve are
shown on page 19 of this manual. NB. Any fitted
Overheat thermostats may require resetting
in the winter months to enable backup heat
sources to heat the cylinder.
Page 18
✗
Figure 1: Cold port of the blending valve connected to mains supply
NO ALLOWED
NOT
Mixed HW out
Mains CW in
Figure 2: Cold port of the blending valve connected to balanced cold
supply - NON-RETURN VALVE MUST BE FITTED
Mixed HW out
Non-Return Valve (must be fitted)
Mains CW in
Figure 3: Cold port of the blending valve connected to mains supply
to the vessel after the inlet control group
Mixed HW out
Mains CW in
Page 19
INSTALLATION
Fitting Blending Valves To The Unvented
Stainless Lite Appliances
When fitting a blending valve to the unvented
appliances, it is important that the installation
does not contravene the G3, WRC and Health
and Safety directives or the manufacturers
recommendations. If this is the case, then
the warranty should be null & void. The key
requirements to comply with these regulations
are: 1. Any fitting or material in contact with
potable water (e.g. a blending valve) must
be approved by WRC or an equivalent body.
2. Connections or wiring arrangements must
not bypass any safety devices.
3. Any expansion due to heating must not be
allowed to expand back into the cold mains.
4. The settings of any safety devices must not
be tampered with or adjusted.
The diagrams opposite shows how the
blending valve can be piped onsite.
Figure 1 shows the cold water port of the
blending valve connected to the mains cold
water supply before the inlet control group.
This arrangement is completely unacceptable
and illegal because: • the water is allowed to expand in to mains
cold water supply.
• the vessel will be charged to the incoming
mains supply which may be considerably
higher than the working pressure of the
vessel.
If this arrangement is used then the Gledhill
warrant will not be valid.
Figure 2 shows the cold water port of the
blending valve connected to the balanced
cold water outlet. This arrangement will only
be acceptable if an approved non-return valve
is fitted, otherwise: • during the heating cycle, the water will
expand back into the mains supply, as the
regulating valve must not be relied upon
to act as a check valve under all operating
conditions.
• depending upon the characteristics of the
blending valve, hot water may also flow from
the balanced cold water taps.
Figure 3 shows the cold port of the blending
valve connected to the cold water supply to the
vessel after the inlet control group. This should
be the preferred method. It is recommended
that the installer should ensure that there is no
gravity circulation in the pipework connected to
the cold port. If necessary, this can be achieved
by fitting a non-return valve or using a thermal
trap.
INSTALLATION
INSTALLATION
Schematic Showing Solar Wiring Requirements
S1
No isolation valve
should be installed
between the solar
circuit and the safety
valve (pressure relief
valve)
1 bar
Solar Controller
Pressure
Relief Valve
Gledhill Stainless Lite
Unvented Cylinder
S1
1 2
S2
S3
3 4 5 6
7 8
Solar
Pumping
Station
T
T
Anti Gravity
Check Valve
N R2 N R1 N L
12 13
14 15 16 17 18 19 20
Anti Gravity
Check Valve
Dual Thermostat
o
+ C
o
+ C
TWO PORT
ZONE VALVE
C 1 2 C 1
A
(Not
supplied)
B
Solar Coil
This valve must be fitted on
the return to the solar panels
and be suitable for higher
temperatures operation
1
L
2
3
4
5
6
7
N
230 VAC 5 amp
Mains Supply
INSTALLATION
Page 20
8
9
10
Standard 10 way
wiring junction box
(Not supplied)
INSTALLATION
(S-PLAN) WIRING DIAGRAM WITH TWO 2 PORT VALVES AND BOILER CONTROLLED PUMP OVERRUN OPTION
HW
Central Heating Control
OFF
CH
ON
Room Thermostat
OFF
WIRE COLOUR LEGEND
Dual Aqau Stat
Overheat Stat
ON
Control Stat
ELECTRONICS
1
N
L
1
2
3
4
Br
G/Y
2
3
Bl
1
C
4
G/Y
B
Br
*Br
3 core flex
4 core cable
Bl
Br
Br
Br
B Br
Br
G/Y
Bl
Danfoss
WB12
Wiring
Centre
1
Br
2
3
C
2
1
Br
*Br
B
4
5
6
Br
Bl
G/Y
Br
L
N
E
HTG
VALVE
G/Y
Bl
7
B
8
Br
Bl
9
10
Br
Brown
Black
Or
Orange
Y
Yellow
Wh
G/Y
White
Green / Yellow
Gr
Grey
G
Green
flex please ensure you
use brown sleeving at
both terminating ends
to identify core potential.
Provide extra core
from terminal 12 to
L-P connection on
the boiler (shown
dotted) and remove
the boiler pump link
if the boiler has an
independant
pump output.
12
11
Red
Blue
Br
B
The electrical installation must
comply with IEE requirements.
For electrical installation
* Blue core used
refer to BS7671
from standard 3 core
Or
Gr
G/Y
Or
R
Bl
HW
VALVE
Note: Do not attempt
the electrical work unless
you are competent to carry
out to the above standard
Bl
L
G/Y
N
E
L
HTG
A
N
B
DHW
A
Boiler
Pump
B
Mains Supply
Fed Via Double
Pole Isolator
230 VAC ~ 5 Amps
Typical schematic wiring diagram for an unvented installation
Br
E
N
L
5 Amps
Bl G/Y
B
Br
E_P
Br
Bl G/Y Or Gr
V4043A
TWO PORT
ZONE VALVE
N_P
Br
L_P
Or
SL_B
Bl G/Y Gr
V4043A
TWO PORT
ZONE VALVE
Boiler Permanent Live
Boiler Neutral
Boiler Earth
Br
Boiler Switch Live Demand
Boiler Controlled Pump
GAS BOILER
Bl G/Y
DRN.
DATE
APPROVED
N. Fursman
07-12-10
ISSUE No : 5
(Y-PLAN) WIRING DIAGRAM WITH 3 PORT VALVE/2 PORT SAFETY VALVE AND BOILER CONTROLLED PUMP OVERRUN OPTION
Central Heating Control
HW
OFF
CH
ON
Room Thermostat
OFF
ON
ELECTRONICS
1
2
WIRE COLOUR LEGEND
Dual Cylinder Stat
Spade
connectors
required
for earth
connections
3
Control Stat
Overheat Stat
C
4
2
1
1
2
C
R (Supplied with stat)
N
L
1
2
3
4
Br
G/Y
Bl
G/Y
B
Br
B
Br
Br
Br
G/Y
Bl
1
2
Br
Br
3
*Br
4 core cable
4 core cable
Bl
Br
4
B
5
*Br
6
Br
Bl
G/Y
Wh
L
N
E
HTG
VALVE
G/Y
Bl
7
Br
8
Bl
G/Y
B
9
10
Or
13
B
Br
HW
VALVE
Gr
Red
Blue
Br
B
Brown
Black
Or
Orange
Y
Yellow
Wh
G/Y
White
Green / Yellow
Gr
Grey
G
Green
The electrical installation must
comply with IEE requirements.
For electrical installation
* Blue core used
refer to BS7671
from standard 3 core
B
12
11
Or
Gr
Br
R
Bl
flex please ensure you
use brown sleeving at
both terminating ends
to identify core potential.
Provide extra core
from terminal 12 to
L-P connection on
the boiler (shown
dotted) and remove
the boiler pump link
if the boiler has an
independant
pump output.
Note: Do not attempt
the electrical work unless
you are competent to carry
out to the above standard
Bl
L
V4043A
TWO PORT
ZONE VALVE
G/Y
N
E
L
N
A
HTG
B
A
DHW
Boiler
Pump
B
Br
E
L
N
5 Amps
Bl G/Y
B
Br
E_P
Br
Bl G/Y Or Gr
N_P
Br
L_P
Or
V4073A
MID POSITION
ZONE VALVE
SL_B
Bl G/Y Gr
Boiler Permanent Live
Boiler Neutral
Boiler Earth
Wh
Boiler Switch Live Demand
Boiler Controlled Pump
GAS BOILER
Bl G/Y
Mains Supply
Fed Via Double
Pole Isolator
230 VAC ~ 5 Amps
Typical schematic wiring diagram for an unvented installation
Page 21
DRN.
DATE
APPROVED
N. Fursman
07-12-10
ISSUE No : 4
INSTALLATION
INSTALLATION
Connections can come loose in transit, and all should be checked before
installation.
Ensure that the immersion heater setting is 60°C and that the wiring is in accordance
with the diagram.
Check the pressure on the air side of the expansion vessel = 3 bar. This must be done
when the volume in the cylinder is cold.
Check that the drain cock is closed, and open all the cold and hot water taps and other
terminal fittings. Allow the system to fill with water, and to run until there is no air left
in the system. Close the taps and inspect the system closely for leaks.
Manually open the Relief Valves one by one and check that water is discharged and
run freely through the tundish and out at the discharge point. The pipework should
accept full bore discharge without overflowing at the tundish, and the valve should
seat satisfactorily.
Allow the cylinder to heat to normal working temperature, then thoroughly flush the
domestic hot and cold water pipework through each tap.
NOTE: If this appliance is to be installed in other than a single domestic dwelling ie.
in an apartment block or student flats etc., the hot and cold water system will need
to be disinfected in accordance with BS6700 and the Water Regulations.
Because the Stainless Lite appliance is stainless steel, the use of chlorine as the
disinfection agent can cause damage unless the appliance is adequately flushed and
refilled with the mains water immediately on completion of the disinfection procedure.
Damage caused through a failure to do this adequately will not be covered by the
warranty.
For the above reasons we recommend the use of a non chlorine based disinfectant
such as Fernox LP Sterox as manufactured by Cookson Electronics when carrying out
disinfection of systems incorporating these appliances.
IMPORTANT - DRAIN DOWN PROCEDURE
1 Switch off both the boiler and the immersion heater
2 Open the nearest hot tap and run all hot water until cold, then close it
3 Close the incoming cold main at the stop tap
4 Hold open the pressure and temperature relief valve until water stops
discharging into the tundish and leave it open
5 Open all the taps in the property
6 Open the drain cock and ensure the pressure and temperature relief valve
is held open until the cylinder is empty
Remove the filter from the combination inlet group clean and replace. Refill the system
and open all hot taps until there is no air in the pipe work. ENSURE CYLINDER IS
DRAINED PRIOR TO CHECKING OR REMOVING FILTER FROM THE COMBINATION
INLET GROUP.
Allow the cylinder to heat to normal working temperature with whatever heat source is
to be used, and check again for leaks. The pressure relief valve or the P&T valve should
not operate during the heating cycle. If the P&T valve operates before the pressure
relief valve due to high pressure, check that the inlet control group is fitted correctly.
COMMISSIONING
Page 22
The boiler/heating systems should be filled
and commissioned in accordance with good
practice following the guidance in BS 5449/the
boiler manufacturers instructions. This includes
adequately flushing the system to remove any
debris that may have been introduced during
installation/maintenance.
NOTE: This appliance is covered by BENCHMARK
and the service record must be completed after
commissioning and after every maintenance/
service visit.
INSTALLATION
Your Stainless Lite unvented cylinder is automatic in normal use, but requires routine
maintenance which is normally carried out at least annually along with the boiler
service. The maintenance must be carried out by a suitably competent tradesperson
who is qualified to work on unvented cylinders. The checks/work needed are listed
in the maintenance part of these Instructions.
The control thermostat for hot water temperature of the direct units is factory set at
60˚C and it is not user adjustable. The indirect units are fitted with an adjustable store
thermostat. However, this should be set between 60˚C - 65˚C to ensure hot water is
sanitised to eliminate the risk of legionella.
When initially opening the taps, a small surge in flow may be experienced, which
disappears as the pressure in the system stabilises. This is quite normal with these
types of systems and does not indicate a fault.
In some areas the water will initially appear cloudy, but will quickly clear when left to
stand. This is nothing to be concerned about and is due to aeration of the water.
WARNING - If water is seen flowing through the tundish, this indicates a fault condition
which needs action.
If the discharge is hot and continuous, turn the boiler and/or the immersion heaters
off, but do not turn off the cold water to the appliance until the discharge is cold. Note:
The discharge may stop by itself as the discharge cools.
If the discharge is cold and intermittent, no immediate action is needed but this
indicates a problem with the expansion vessel.
However, in both cases you must call the registered installer / a suitably qualified,
competent tradesperson, advise them that you have an unvented cylinder and
request a maintenance visit.
DO NOT, at any time, tamper in any way with the safety valves or overheat thermostats/
wiring.
Page 23
USER INSTRUCTIONS
SERVICING AND MAINTENANCE
The Registered Installer is responsible for the safe installation and operation of the
system. The installer must also make his customer aware that periodic maintenance
of the equipment is essential for safety.
Maintenance periods will vary for many reasons. Gledhill Building Products Ltd
recommend a maximum of 12 months to coincide with boiler maintenance. Experience
of local water conditions may indicate that more frequent maintenance is desirable,
eg, when water is particularly hard, scale-forming or where the water supply contains
a high proportion of solids, eg, sand. Maintenance must include the following:
1.
2.
3.
4.
Check and clean filter
Manually check the operation of the temperature relief valve.
Manually check the operation of the expansion relief valve.
Check discharge pipes from temperature and expansion relief valves are free from
obstruction and blockage and are not passing any water.
5. Check the condition and if necessary descale the heat exchangers in hard water
areas.
6. Check that water pressure downstream of pressure reducing valve is within the
manufacturers limits.
7. Check operation of motorised valve.
8. Check the pressure on the air side of the expansion vessel. This must be done when
the volume in the cylinders is cold.
9. Check and advise the householder not to place any clothing or other combustible
materials against or on top of this appliance.
10.On completion of the work, fill in the Benchmark Service Record towards the back
of this manual.
IMPORTANT NOTE
When draining down the appliance for any reason, the instructions
provided in the Commissioning Section MUST be followed to prevent
potential damage to the cylinder.
SERVICING AND MAINTENANCE
Page 24
SERVICING AND MAINTENANCE
Scale
In hard water areas it is recommended that an in-line scale inhibitor is fitted. Reducing
the temperature of the stored water will reduce the rate at which scale forms. If the
recovery rate is badly affected, this is an indication that scaling may have occurred. In
this event, follow the procedures as recommended by a reputable Water Treatment
Company.
General
No water at the tap. Check that the mains water supply is turned ON. Check the line
strainer is not blocked. Check that the combination valve has been fitted so that water
is flowing in the correct direction.
If the water at the tap is cold, ensure that the boiler has been switched ON and is
working correctly. Check that there are no air locks in the primary system. ISOLATE
THE UNIT AT THE MAINS ELECTRIC SUPPLY AND THEN CHECK THE FOLLOWING:
i. The cylinder thermostat
ii. The thermal cut-out, which can be re-set by pushing the red button
iii. The motorised valve
iv. The boiler thermostat
v. The boiler thermostat cut-out (if fitted)
ANY ENERGY CUT-OUT MUST NEVER BE BY-PASSED UNDER ANY CIRCUMSTANCES.
If the units are not getting hot and the heat source is electrical, ensure that the
immersion heaters are isolated from the mains before re-setting the energy cut-out.
If the immersion heater(s) need replacing this should be done with the units supplied
from Gledhill Building Products Limited. Same day despatch to approved installers
can be arranged by telephoning 01253 474402.
Discharge From Relief Valves
If cold water is discharging from the expansion relief valve into the tundish check the
pressure on the expansion vessel when cold and recharge if necessary.
If the fault continues and the problem cannot be stopped by operating the easing
control a few times then either the Pressure Reducing Valve or the Relief Valve may
be at fault. If the cold water pressure is too high, this would suggest that the Pressure
Reducing Valve is at fault and the Gledhill approved replacement should be fitted.
If the pressure is correct then the Relief Valve will require replacing with a Gledhill
approved component.
See Commissioning for drain down procedure.
If there is an overheat fault and very hot water is being discharged, turn off the heat
source, but not the water supply.
When the supply is cool, check thermostats and energy cut-outs in the boiler and
immersion heaters and replace the faulty component with a unit supplied by Gledhill
and check that it works correctly before returning the system to full operation.
Page 25
FAULT FINDING
SERVICING AND MAINTENANCE
FAULT - No Hot Water (Direct)
START
NO
Is power on to elements?
Switch on
YES
Is control temperature
set at 55ºC - 60ºC?
NO
Re-set
YES
NO
Has high limit tripped?
Replace element
YES
Check wiring links
continuity and Re-set
END
FAULT - No Hot Water (Indirect)
START
YES
NO
Is boiler on?
Switch on
YES
Is hot water programmer
in ‘on’ position?
NO
Set programmer
YES
Is zone valve in
correct position?
NO
Re-set, check wiring &
plumbing is correct
YES
Is control temperature
set at 55ºC - 60ºC?
NO
Re-set
YES
NO
Has high limit cut out?
YES
Is all wiring to the
controls ok?
NO
Re-wire
YES
NO
Re-set
Replace thermostat
END
FAULT FINDING
Page 26
SERVICING AND MAINTENANCE
FAULT - Poor Water Flow at Hot Taps
START
YES
Is incoming mains supply
flow/pressure adequate?
NO
Water service check by
supply company required
YES
Is in-line strainer
(in combination valve)
clean?
NO
Clean or replace strainer
as appropriate
YES
Is pressure reducing valve
(in combination valve)
working?
NO
Service /replace PRV
as appropriate
YES
Is system free from
restrictions/blockages?
NO
Clear obstructions
YES
END
FAULT - Water Discharge Into Tundish
START
NO
Is pressure downstream
of pressure reducing valve
correct?
YES
Is valve seal and seat
clean & undamaged?
NO
Clean or replace
as required
YES
Is heater operating at
less than 60ºC?
NO
YES
Is expansion vessel
charge pressure correct?
NO
Recommission
expansion
vessel pressure
YES
YES
Replace ERV/TPRV
Is ERV/TPRV
discharging?
Re-set temperature
NO
Replace PRV
END
Page 27
FAULT FINDING
SERVICING AND MAINTENANCE
SPARE PARTS LIST
Quantity
Stock Code No.
1
3kW immersion element
Description
1
SH001
2
22mm 90° compression elbow c/w/drain
1
SF003
3
Pressure and temperature relief valve 6 bar 95°C
1
SG001
4
Inlet group set at 3 bar c/w expansion relief valve set at 4.75 bar
1
SG012
5
¾” flexible hose
1
SG003
7
12 litre expansion vessel
1
XG190
8
18 litre expansion vessel
1
XG191
9
24 litre expansion vessel
1
XG192
10
35 litre expansion vessel
1
XG193
11
Wall mounting bracket for 35 litre expansion vessel
1
XG058
12
22mm 2 port valve (indirects only)
1
XG083
13
Junction wiring box (12 way)
1
XG129
14
Control and overheat limit thermostat
1
XG168
15
15mm x 22mm tundish
1
XG173
SHORT PARTS LIST
Page 28
APPENDIX
Water Savings
Water Related Costs Can Be Reduced By Good Plumbing Practice
1
2
1
1
2 tap
half open
Unregulated
Over
20 l/m
Fitted with regulator
5, 6 or
8 l/m
2
2
TAPS & MIXERS
4 Fixing Options For Taps & Mixers
1. MK Range - Combined Regulators & Aerator
for screwing onto Taps & Mixers with internal
or external threads on their noses.Anti Vandal
models also available.
Unregulated
25 - 30 l/m
Regulated
10 - 12 l/m
SHOWERS
Vast quantities of water are needlessly run off to waste due to Taps, Mixers and Showers
discharging flow rates far in excess of the rates required for them to perform their
duties.
The contrasting flow rates shown on this leaflet clearly illustrate the savings that can
be made whilst still providing a good performance.
British made Aquaflow Regulators provide constant flow rates by automatically
compensating for supply pressure changes between 1 bar & 10 bars.
To facilitate installation into the wide range of plumbing equipment which is
encountered in the U.K, Four Fixing Options are available:-
2. MR05-T Range - Internal Regulators. Pushfit into Tap or Mixer seats. Produced in
three sizes - 12.5mm (BS1010), 12mm &
10mm, Flangeless models also available for
Taps with Low Lift washers.
3. MXF Standard Range - Screw on tail
models for Taps & Mixers. Fix onto the tails
before fitting the tap connectors. Available
in 3/8", 1/2", 3/4" and 1" BSP.
4. Compression Fitting Range - “In Line”
regulators housed in 15mm & 22mm CXC
Couplers & Isolating Valves.“ ”UK WFBS listed
by the Water Research Centre. Isolation valves
available for slotted screwdriver operation or
with coloured plastic handles. Now available
also in plastic bodied push-fit couplers &
valves.
3
3
Options For Showers
1. MXF “DW” Range - For fitting behind Fixed Shower Heads or onto Flexible Hoses for
Handshowers (preferably onto the inlet end when lightweight hoses are used).
1
2. Compression Fitting Range. “In Line” regulators as in Option 4 for Taps & Mixers.
4
Information by courtesy of
AQUAFLOW REGULATORS LTD
Haywood House, 40 New Road, Stourbridge, West Midlands DY8 1PA
TELEPHONE (01384) 442611 FAX: (01384) 442612
Page 29
APPENDIX A
APPENDIX
MANUAL HANDLING OF APPLIANCE PRODUCTS
Description
Manual handling means any transporting or supporting of a load (including lifting,
putting down, pushing, pulling, carrying or moving) by hand or bodily force.
Scope
This assessment will cover the largest unit within each product range manufactured
by Gledhill.
For specific weights and dimensions please refer to technical data section.
Main Hazards
Vision may not be clear due to the size of the products.
Adopting an incorrect method of lifting may cause injury, attempting to lift these
products will require help from others. (Team lifts)
Control Measures
Manual lifting procedure
Individual capability
The lift, key factors in safe lifting are:
Individual capability plays an important
part in handling these products. Persons
above average build and strength will
find it easier and should be in good
health. Persons below average build and
strength may require more rest periods
during the handling process.
a.
b.
c.
d.
e.
Balance
Position of back
Positioning of the arms and body
The hold
Taking the lead for team lifts
a.
Balance - Since balance depends essentially upon the position of the feet,
they should be apart about hip breadth with one foot advanced giving full
balance sideways and forward without tension. In taking up this position,
lifting is done by bending at the knees instead of the hips and the muscles
that are brought into use are those of the thigh and not the back.
b.
e. Taking the lead for team lifts- As
more than one person is required
for these products ensure that one
person is taking the lead. This may
be you so ensure that each person
that is helping is made aware of the
weight and of the items listed within
this assessment. Make sure you and
any others helping know the route
you intend to take that it is clear of
any obstructions. Never jerk the load
as this will add a little extra force and
can cause severe strain to the arms,
back and shoulders. If there are steps
involved decide on where you will
stop and take a rest period. Move
smoothly and in unison taking care
to look and listen to others helping
with the lift. Where possible use
a sack truck to move the product
over long flat distances, only lift the
products when necessary. If in doubt
stop and get more help.
Position of back - Straight - not necessary vertical. The spine must be
kept rigid, this coupled with a bent knee position, allows the centre line of
gravity of the body to be over the weight so reducing strain.
c.
Positioning of arms and body - The further arms are away from the side,
the greater the strain on the shoulders, chest and back. Keep elbows close
to the body arms should be straight.
d.
The hold - Before lifting ensure you have a good hold.
Pregnant women should not carry out
this operation.
Persons who are not in good health
should seek medical advice prior to
commencing any lifting or manual
handling operation.
Residual risk
Following the guidelines given above will
reduce any risk to injury.
All persons carrying out this operation
must be fully trained and copies of the
specific risk assessment made available
for inspection and use in their training
process.
Further guidance on Manual Handling
can be obtained from the Health and
Safety Executive.
Manual Handling
Operations Regulations 1992.
APPENDIX B
Page 30
Page 31
NOTES
BENCHMARK
Page 32
Page 33
BENCHMARK
Gledhill (Building Products) Ltd
AMD. OCTOBER 2011
CONDITIONS OF SALE & GUARANTEE TERMS
1.
Gledhill (Building Products) Ltd (“We” or “Gledhills”) only do business upon the Conditions which appear
below and no other. Unless we so agree in writing these Conditions shall apply in full to any supply of goods by us
to the exclusion of any Conditions or terms sought to be imposed by any purchaser. These Conditions of Sale and
Warranty Terms override those which are contained on the Invoice Forms and all Sales are now subject to these
Conditions of Sale and Warranty terms only.
2.
PRICE
Once an order or call off has been accepted the price will be held for three months but if delivery is extended
beyond that period at the customer’s request, then we reserve the right to amend the price when necessary.
The company reviews its pricing annually to adjust for changes in our cost base. We reserve the right to alter prices
at any time for severe movements in raw materials (mainly copper and steel). If there is to be a change we will give
customers at least four weeks notice but anything delivered after that date will be at the revised price. An order
may not be cancelled or varied after acceptance without the written consent of the company. Such cancellation or
variation shall be subject to such reasonable charges as may be appropriate.
3.
SPECIFICATION
The goods are supplied in accordance with the Specifications (if any) submitted to the Purchaser and any additions
and alterations shall be the subject of an extra charge. Any goods not so specified shall be in accordance with our
printed literature or the literature of any of our component suppliers (subject to any modifications made since
publication). If we adopt any changes in construction or design of the goods, or in the specification printed in our
literature, the Purchaser shall accept the goods so changed in fulfilment of the order.
4.
PAYMENT
The buyer shall make payment in full within thirty days from the end of the month in which the invoice is dated. If
we receive payment in full on or before the due date we will allow an appropriate settlement discount except where
we have quoted a special net price. If payment is not received in full on or before the due date we shall be entitled
in addition to the invoice price to:
(i)
payment of a sum equal to any increase in the copper price supplement applicable to the particular goods
sold between the date of receipt of order and the date of receipt of payment in full; and
(ii) interest on any part of the invoice price unpaid after the due date at the rate of 3% per annum over the base
rate for the time being of HSBC Bank plc.
5.
TIME
We give estimates of delivery dates in good faith and time of delivery is not nor shall be made of the essence of any
contract nor shall we be liable for any loss or damage occasioned by delay in delivery.
6.
DELIVERY
We deliver free normally by our own vehicles within 25 miles of any of our manufacturing depots. Delivery to any
place more than 25 miles from one of our manufacturing depots may be subject to our quoted delivery charges. We
reserve the right to make delivery of goods contained in one order by more than one consignment and at different
times. Where a period is agreed for delivery and such period is not extended by our Agreement, the Purchaser shall
take delivery within that period. If the Purchaser fails to take delivery, we shall be entitled at the Purchaser’s risk
and expense to store the goods at the Purchaser’s premises or elsewhere and to demand payment as if they had
been despatched. Off loading at point of delivery shall be the responsibility of and be undertaken by the Purchaser.
7.
SHORTAGES OR DAMAGE
Goods must be inspected before signature of delivery note and any damage, shortage or discrepancy noted on the
delivery note and the goods returned on the same vehicle. The buyer must also give us immediate written notice of
the damage, shortage or discrepancy so that we may prompt investigation.
8.
RETURN OF GOODS
Goods may not be returned to the Company except by prior written permission of an authorised officer of the
Company and such return shall be subject to payment by the Purchaser of handling and re-stocking charges,
transport and all other costs incurred by the Company.
9.
COMPANY LIABILITY AND GUARANTEE
9.1. Subject to the terms of these Conditions of Sale and Guarantee Terms Gledhills provide Guarantees in respect
of specific products as set out in this clause.
9.2. Each Guarantee is strictly conditional upon the following:9.2.1. Complaints must be given to us immediately, before any action is taken, as responsibility cannot be accepted
if repairs or renewals are attempted on site without our written approval.
9.2.2. The unit has been installed in accordance with our installation and service instructions and all relevant codes
of practice and regulations in force at the time of installation.
9.2.3. All necessary inlet controls and safety valves have been fitted correctly.
9.2.4. The unit has only been used for the storage of potable water supplied from the public mains.
9.2.5 Where appropriate the unit has been regularly maintained as detailed in the installation and service instructions
9.2.6. Defects caused by corrosion or scale deposits are not covered by any Guarantee.
9.2.7. Where we agree to rectify any defect we reserve the right to undertake the work on our own premises.
9.2.8. We will not accept any labour charges associated with replacing the unit or parts for any of the following
products listed.
9.3. Guarantees are provided in respect of specified goods supplied by Gledhills as follows:(a) Domestic and Commercial Open Vented Cylinders and Tanks.
The storage vessel is guaranteed for ten years and if it proves to be defective either in materials or
workmanship, we will either repair or supply replacement at our option with the closest substitute in the case
of any obsolete product to any address in Great Britain.
(i) free of all charge during the first year after delivery by us.
(ii) thereafter at a charge of one-tenth of the then current list price and any copper price supplement and
delivery charge during the second year after delivery by us and increasing by a further one-tenth on the
second and subsequent anniversary of delivery by us.
(b) Domestic Mains Fed Products [Primary Stores]
The storage vessel is guaranteed for five years and if it or any integral pipework as part of the storage vessel
assembly proves to be defective either in materials or workmanship, we reserve the right to either repair or
supply replacements or the closest possible substitute in the case of any obsolete product and will collect and
deliver to any address in England, Wales and Scotland (excluding all Scottish Islands).
(i) free of all charge during the first year after delivery by us.
(ii) thereafter at a charge of one-fifth of the then current list price or any copper price supplement and
delivery charge during the second year after delivery by us increasing by a further one-fifth on the second
and subsequent anniversary of delivery by us.
TERMS AND CONDITIONS
Page 34
(c) Stainless Steel Unvented Cylinders
Gledhill guarantee the components including
controls, valves and electrical parts for two years from
the date of purchase. IT SHOULD BE NOTED THAT
THE FACTORY FITTED TEMPERATURE AND PRESSURE
RELIEF VALVE MUST NOT BE REMOVED OR ALTERED
IN ANY WAY OR THE GUARANTEE WILL NOT BE VALID.
GLEDHILL WILL NOT BE RESPONSIBLE FOR ANY
CONSEQUENTIAL LOSS OR DAMAGE HOWEVER IT IS
CAUSED.
The guarantee for the stainless steel vessel is for
twenty five years if the original unit is returned to us
AND PROVIDED THAT:
(i) It has not been modified, other than by Gledhill.
(ii) It has not been subjected to wrong or improper
use or left uncared for.
(iii) It has only been used for the storage of potable
water, max 200mg/litre chloride.
(iv) It has not been subjected to frost damage.
(v) The benchmark service record is completed after
each annual service.
(vi) The unit has been serviced annually.
(vii) Any disinfection has been carried out strictly in
accordance with BS6700.
If the stainless steel vessel proves to be defective
either in materials or workmanship we reserve the
right to either repair or supply replacements or the
closest possible substitute in the case of any obsolete
product and will collect and deliver to any address in
England, Scotland and Wales (excluding all islands):
(i) free of charge during the first year after delivery by
us.
(ii) thereafter at a charge of one twenty fifth of the
then current list price during the second year
after delivery by us and increasing by a further
one twenty fifth on the second and subsequent
anniversary of delivery by us.
ACTION IN THE EVENT OF FAILURE
If the stainless steel cylinder develops a leak we will
ask for a deposit against the supply of a new one. This
will be refunded if the failure is within the terms of the
warranty when it has been examined by us.
Please note:
- Installation must have been carried out by a
licensed specialized company (heating contractor
or plumber) following the version of installation
instructions in force.
- Gledhill or its representative was given the
opportunity to check complaints on site
immediately after any defect occurred.
- Confirmation exists that the system was
commissioned properly and that the system
was checked and maintenance was performed
annually by a specialised company licensed for
this purpose.
(d) Components of our products other than
Storage Vessels and Integral Pipework.
We will either extend to the purchaser the same terms
of warranty as we are given by the manufacturer of
the component or if the manufacturer does not give
any warranty, replace free of charge any component
which becomes defective within two years after the
date of the delivery by us and is returned to us at the
purchaser’s expense but we shall not meet the cost of
removal or shipping or return of the component or
any other cost charges or damages incurred by the
purchaser.
9.4.
9.4.1. In respect of goods supplied by us and in respect of
any installation work carried out by or on our behalf,
our entire liability and the purchaser’s sole remedies
(subject to the Guarantees) shall be as follows:(a) We accept liability for death or personal injury to
the extent that it results from our negligence or
that of our employees
(b) Subject to the other provisions of this clause 9
we accept liability for direct physical damage
to tangible property to the extent that such
damage is caused by our negligence or that of our
employees, agents or subcontractors.
(c) Our total liability to the purchaser over and above any liability to replace under the Guarantees (whether
in contract or in tort including negligence) in respect of any one cause of loss or damage claimed to result
from any breach of our obligations hereunder, shall be limited to actual money damages which shall not
exceed £20,000 provided that such monetary limit shall not apply to any liability on the part of ourselves
referred to in paragraph (a) above
(d) Except as provided in paragraph (a) above but otherwise not withstanding any provision herein contained
in no event shall we be liable for the following loss or damage howsoever caused and even if foreseeable
by us or in our contemplation:(i) economic loss which shall include loss of profits, business revenue, goodwill or anticipated savings
(ii) damages in respect of special indirect or consequential loss or damage (other than death, personal
injury and damage to tangible property)
(iii) any claim made against the purchaser by any other party (save as expressly provided in paragraph (b) above)
(e) Except in respect of our liability referred to in paragraph (a) above no claim may be made or action
brought (whether in contract or in tort including negligence) by the purchaser in respect of any goods
supplied by us more than one year after the date of the invoice for the relevant goods.
(f) Without prejudice to any other term we shall not be liable for any water damage caused directly or
indirectly as a result of any leak or other defect in the goods. We cannot control the conditions of use of
the goods or the time or manner or location in which they will be installed and the purchaser agrees to
be fully responsible for testing and checking all works which include the goods at all relevant times (up
to, including and after commissioning) and for taking all necessary steps to identify any leaks and prevent
any damage being caused thereby.
(g) Nothing in these Conditions shall confer on the purchaser any rights or remedies to which the purchaser
would not otherwise be legally entitled
10. LOSS OR INJURY
Notwithstanding any other provision contained herein the purchaser’s hereby agree to fully indemnify us against
any damages losses costs claims or expenses incurred by us in respect of any claim brought against us by any third
party for:(a) any loss injury or damage wholly or partly caused by any goods supplied by us or their use.
(b) any loss injury or damage wholly or partly caused by the defective installation or substandard workmanship
or materials used in the installation of any goods supplied by us.
(c) any loss injury or damage in any way connected with the performance of this contract.
(d) any loss resulting from any failure by the purchaser to comply with its obligations under these terms as to
install and/or check works correctly.
PROVIDED that this paragraph will not require the purchaser to indemnify us against any liability for our own acts
of negligence or those of our employees agents or sub-contractors
FURTHER in the case of goods supplied by us which are re-sold and installed by a third party by the purchaser it will
be the sole responsibility of the purchaser to test the goods immediately after their installation to ensure that inter
alia they are correctly installed and in proper working order free from leaks and are not likely to cause any loss injury
or damage to any person or property.
11. VARIATION OF WARRANTY AND EXCLUSION
Should our warranty and exclusion be unacceptable we are prepared to negotiate for variation in their terms but
only on the basis of an increase in the price to allow for any additional liability or risk which may result from the
variation. Purchasers are advised to insure against any risk or liability which they may incur and which is not covered
by our warranty.
12. ADVICE
Any advice or assistance given by the Company is provided without charge and is in good faith without undertaking,
representation or warranty, and we will not accept any liability, whether consequential or compensatory, for advice
or assistance given.
13. RISK AND RETENTION OF TITLE
(a) goods supplied by us shall be at the Purchaser’s risk immediately upon delivery to the Purchaser or into
custody on the Purchaser’s behalf or to the Purchaser’s Order. The Purchaser shall effect adequate insurance
of the goods against all risks to the full invoice value of the goods, such insurance to be effective from the time
of delivery until property in the goods shall pass to the Purchaser as hereinafter provided.
(b) property in the goods supplied hereunder will pass to the Purchaser when full payment has been made by the
Purchaser to us for :(i) the goods of the subject of this contract.
(ii) all other goods the subject to of any other contract between the Purchaser and us which, at the time of
payment of the full price of the goods sold under this contract, have been delivered to the Purchaser but
not paid for in full.
(c) until property in the goods supplied hereunder passes to the Purchaser in accordance with paragraph (2) above.
(i) the Purchaser shall hold the goods in a fiduciary capacity for us and shall store the same separately from any
other goods in the Purchaser’s possession and in a manner which enables them to be identified as our goods.
(ii) the Purchaser shall immediately return the goods to us should our authorised representative so request.
All the necessary incidents associated with a fiduciary relationship shall apply.
(d) the Purchaser’s right to possess the goods shall cease forthwith upon the happening of any of the following
events, namely :(i) if the Purchaser fails to make payment in full for the goods within the time stipulated in clause 4 hereof.
(ii) if the Purchaser, not being a company, commits any act of bankruptcy, makes a proposal to his or her
creditors for a compromise or does anything which would entitle a petition for a Bankruptcy Order to be
presented.
(iii) if the Purchaser, being a company, does anything or fails to do anything which would entitle an
administrator or an administrative receiver or a receiver to take possession of any assets or which would
entitle any person to present a petition for winding up or to apply for an administration order.
(e) the Purchaser hereby grants to us an irrevocable licence to enter at any time any vehicle or premises owned
or occupied by the Purchaser or in the possession of the Purchaser for the purposes of repossessing and
recovering any such goods the property in which has remained in us under paragraph (2) above. We shall not
be responsible for and the Purchaser will indemnify us against liability in respect of damage caused to any
vehicle or premises in such repossession and removal being damaged which it was not reasonably practicable
to avoid.
(f)
notwithstanding paragraph (3) hereof and subject to paragraph (7) hereof, the Purchaser shall be permitted to
Page 35
sell the goods to third parties in the normal course of
business. In this respect the Purchaser shall act in the
capacity of our commission agent and the proceeds of
such sale :(i) shall be held in trust for us in a manner which
enables such proceeds to be identified as such,
and :
(ii) shall not be mixed with other monies nor paid into
an overdrawn bank account.
We, as principal, shall remunerate the Purchaser as
commission agent a commission depending upon
the surplus which the Purchaser can obtain over and
above the sum, stipulated in this contract of supply
which will satisfy us.
(g) in the event that the Purchaser shall sell any of the
goods pursuant to clause (6) hereof, the Purchaser
shall forthwith inform us in writing of such sale and
of the identity and address of the third party to whom
the goods have been sold.
(h) if, before property in the goods passes to the
Purchaser under paragraph (2) above the goods are or
become affixed to any land or building owned by the
Purchaser it is hereby agreed and declared that such
affixation shall not have the effect of passing property
in the goods to the Purchaser. Furthermore if, before
property in the goods shall pass to the Purchaser
under paragraph (2) hereof, the goods are or become
affixed to any land or building (whether or not owned
by the Purchaser), the Purchaser shall:(i) ensure that the goods are capable of being
removed without material injury to such land or
building.
(ii) take all necessary steps to prevent title to the
goods from passing to the landlord of such land
or building.
(iii) forthwith inform us in writing of such affixation
and of the address of the land or building
concerned.
The Purchaser warrants to repair and make good
any damage caused by the affixation of the goods
to or their removal from any land or building and to
indemnify us against all loss damage or liability we
may incur or sustain as a result of affixation or removal.
(i) in the event that, before property in the goods
has passed to the Purchaser under paragraph (2)
hereof, the goods or any of them are lost, stolen,
damaged or destroyed :(ii) the Purchaser shall forthwith inform us in writing
of the fact and circumstances of such loss, theft,
damage or destruction.
(iii) the Purchaser shall assign to us the benefit of any
insurance claim in respect of the goods so lost,
stolen, damaged or destroyed.
14. NON-PAYMENT
If the Purchaser shall fail to make full payment for the goods
supplied hereunder within the time stipulated in clause 4
hereof or be in default of payment for any other reason then,
without prejudice to any of our other rights hereunder, we
shall be entitled to stop all deliveries of goods and materials
to the Purchaser, including deliveries or further deliveries of
goods under this contract. In addition we shall be entitled
to terminate all outstanding orders.
15. VALUE ADDED TAX
All prices quoted are exclusive of Value Added Tax which will
be charged at the rate ruling at the date of despatch of invoice.
16. TRADE SALES ONLY
We are only prepared to deal with those who are not
consumers within the terms of the Unfair Contract Terms
Act 1977, the Sale of Goods Act 1979 and the Supply of
Goods and Services Act 1982. Accordingly any person who
purchases from us shall be deemed to have represented that
he is not a consumer by so purchasing.
17. JURISDICTION
The agreement is subject to English law for products
delivered in England and Scottish law for products delivered
in Scotland and any dispute hereunder shall be settled in
accordance therewith dependent upon the location.
18. PRODUCT DEVELOPMENT
Gledhill have a policy of continuous product development
and may introduce product modifications from time to time.
TERMS AND CONDITIONS
Providing peace of mind
On expiry of your initial warranty period, Gledhill Response Limited would be
pleased to provide further customer support with a range of services including:
Low cost annual repair and maintenance contracts direct from Gledhill
Annual servicing and safety checks
Expert response to ‘out of warranty’ breakdowns at fixed charges
Please ring 08445 679898 or visit www.gledhill.net for further details
Gledhill Building Products Limited
Sycamore Estate, Squires Gate, Blackpool FY4 3RL Tel: 01253 474550 Fax: 01253 474551 [email protected]
Gledhill Building Products produce cylinders for use with a wide range of heat sources including;
Gas and oil boilers
Ground source heat pumps
Electricity
Solar energy
Air source heat pumps
Wood burning stoves
For further information of Gledhill products can be found on the internet at www.gledhill.net
“Only the best
is acceptable”
FM 2057
Gledhill cylinders are produced
under an ISO 9001:2008
Quality System accepted
by BSI
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.
Issue 14 11/11
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