StainlessLite HP Design, Installation & Servicing Instructions Models covered in this manual

StainlessLite HP Design, Installation & Servicing Instructions Models covered in this manual
StainlessLite HP
Unvented cylinders specifically designed to work with a heat pump
Design, Installation & Servicing Instructions
Models covered in this manual
Stainless Lite HP Direct 180-400 litres
Stainless Lite HP Slimline 180-210 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 EN 12828, BS EN 12831, BS EN 14336; BS 5546;
BS 5440:1; BS 5440:2; CP 331:3
BS EN 806-1 to 5, BS EN 8558:2011: BS EN 1458-1:2011 and BS 7593:2006
ISSUE 9: JANUARY 2014
Section
Page
DESIGN
Description
Technical Information
System Design
3
5
6
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
9
20
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
21
SERVICING AND MAINTENANCE
Servicing and Maintenance
Fault Finding
Short Parts List
22
23
25
APPENDIX
Appendix A
Appendix B
26
27
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.
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
Terms & Conditions
28
Benchmark Checklist
Benchmark Service Record
30
31
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
92-95°C
85°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 including control and cut out thermostats
• Expansion vessel/mounting bracket/flexible hose
• Technical/user product literature
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 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
Table 1
Stainless Lite HP Model
HP180IND
HP210IND
HP250IND
HP300IND
HP400IND
Capacity - total volume
litres
180
210
250
300
400
Volume heated by IH
litres
113
135
160
195
270
Dedicated solar volume
litres
65
75
90
105
130
Standing heat loss rate
kWh/24h
1.48
1.70
1.85
2.04
2.82
Weight - empty/full
kg
33/213
38/248
43/293
49/349
61/461
Pressure regulating valve setting
bar
3
3
3
3
3
Expansion relief valve setting
bar
4.75
4.75
4.75
4.75
4.75
Temperature setting (P&T valve)
°C
95
95
95
95
95
Pressure setting (P&T valve)
bar
6.0
6.0
6.0
6.0
6.0
litres
18
24
24
35
2 x 24
bar
3
3
3
3
3
A
mm
1305
1495
1745
1992
2030
Diameter
B
mm
550
550
550
550
630
22mm secondary return
C
mm
-
1127
1377
1577
1592
22mm compression cold feed
D
mm
442
442
522
522
557
P & T valve
E
mm
1053
1241
1491
1720
1784
22mm solar return - bottom coil
F
mm
223
223
223
223
238
22mm solar flow - bottom coil
G
mm
352
352
472
472
548
28mm primary return - top coil
H
mm
467
542
647
742
641
28mm primary flow - top coil
I
mm
1072
1232
1467
1562
1791
Dual CT & OHT pocket - 1 top
J
mm
732
837
962
1092
1076
Dual CT & OHT pocket - 2 bottom
K
mm
419
419
539
539
651
Solar sensor pocket - 1 top
L
mm
882
1000
1180
1367
1382
Solar sensor pocket - 2 bottom
M
mm
203
203
262
262
334
3kW immersion heater height
N
mm
457
522
607
702
640
1.27
Expansion vessel size (volume)
Expansion vessel initial charge pressure
Height
Surface area of solar heater coil
m
0.68
0.68
0.97
0.97
Solar coil pressure loss 1
bar
0.191
0.191
0.241
0.241
0.31
Primary heat exchanger surface area
m2
1.36
1.56
1.94
2.04
2.91
2
Primary heat exchanger thermal rating 1
kW
24.3
26.2
27.5
34.2
47.2
Primary heat exchanger pressure loss 1
bar
0.048
0.054
0.060
0.019
0.027
Heat up time from 15°C to 60°C 2
min
33
41
44
48
49
Recovery time after 70% draw-off 2
min
21
26
30
32
38
1. Measured at 0.25 l/s primary flow rate
2. Measured at 0.25 l/s primary flow rate and at 82°C flow temperature
E
L
I
C
15,00º
J
N
H
DESCRIPTION
F
M
D
G
K
DESCRIPTION
A
NOTES
25,00
40,0
0º
Page 4
º
0º
35,0
0
45,
0º
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.
DESIGN
Table 2
Stainless Lite HP Slimline Model
HP180SL
HP210SL
Capacity - total volume
litres
180
210
Volume heated by IH
litres
170
200
Dedicated solar volume
litres
-
-
Standing heat loss rate
kWh/24h
2.01
2.23
Weight - empty/full
kg
33/213
37/247
Pressure regulating valve setting
bar
3
3
Expansion relief valve setting
bar
4.75
4.75
Temperature setting (P&T valve)
°C
95
95
Pressure setting (P&T valve)
bar
6.0
6.0
litres
18
24
bar
3
3
A
mm
1790
1970
Diameter
B
mm
475
475
22mm secondary return
C
mm
-
1540
22mm compression cold feed
D
mm
283
283
P & T valve
E
mm
1535
1706
22mm solar return
F
mm
-
-
22mm solar flow
G
mm
-
-
28mm primary return
H
mm
275
285
28mm primary flow
I
mm
1545
1585
HP control thermostat
J
mm
628
699
Dual CT & OHT pocket
K
mm
628
699
Solar sensor pocket - 1 top
L
mm
-
-
Solar sensor pocket - 2 bottom
M
mm
-
-
3kW immersion heater height
N
mm
207
212
Expansion vessel size (volume)
Expansion vessel initial charge pressure
Height
Surface area of solar heater coil
m2
-
-
Solar coil pressure loss
bar
-
-
Primary heat exchanger surface area
m2
3.01
3.01
Primary heat exchanger thermal rating 1
kW
32.8
31.2
Primary heat exchanger pressure loss 1
bar
0.018
0.018
Heat up time from 15°C to 60°C 2
min
33
41
Recovery time after 70% draw-off 2
min
21
26
1
1. Measured at 0.25 l/s primary flow rate
2. Measured at 0.25 l/s primary flow rate and at 82°C flow temperature
NOTES
A
P&T
Coil
Con
ne c t
C
E
37,0
0
I
Se c
Sta
t
26
tn
@
2 ,0
0°
ions
52 ,
00°
K
F
Cold
eed
33, 0
0°
Immersion
N
D
H
J
.R
°
3,00°
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.
Page 5
TECHNICAL INFORMATION
DESIGN
Stainless Lite HP
1
2
Basic Appliance
1. Hot water draw off (22mm) compression
2. Temperature & pressure relief valve 92-95°/6
bar
3. Hot water secondary return 22mm
(not fitted to smaller sizes, see table 1)
4. Immersion heater 1¾” BSP 3kW
5. 22mm cold supply
6. Thermostat pocket (22mm)
7. Primary return (28mm)
8. Primary flow (28mm)
9. Dual control/Overheat stat & solar
thermostat pocket
10. Solar coil return to panel collector (22mm)
compression
11. Solar coil flow from panel (22mm) compression
12. Solar thermostat pocket
13. Drain off
8
3
6
9
7
4
9
11
5
12
13
10
Typical arrangement of component kit shown fitted to the appliance for clarity
Pipework to be supplied and fitted by installer.
SYSTEM DESIGN
Page 6
Part G3 loose components supplied in a
separate box’
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 (28mm) zone valve for
primary circuit
F. Wiring junction box for primary system
1
Stainless Lite HP Slimline
Basic Appliance
1. Hot water draw off (22mm) compression
2. Temperature & pressure relief valve 92-95°/6
bar
3. Hot water secondary return 22mm
(210 litre model only)
4. Immersion heater 1¾” BSP 3kW
5. 22mm cold supply
6. Primary return (28mm)
7. Primary flow (28mm)
8. Dual control/Overheat stat
9. HP control thermostat
2
3
7
9
8
6
5
4
Typical arrangement of component kit shown fitted to the appliance for clarity
Pipework to be supplied and fitted by installer.
Page 7
Part G3 loose components supplied in a
separate box’
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 (28mm) zone valve for
primary circuit
F. Wiring junction box for primary system
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 Heat Pump (HP) models:
The Stainless Lite HP is an unvented hot water storage cylinder fitted with two high
efficiency internal primary heat exchangers especially designed for use with heat
pump systems. These two heat exchangers must be connected in parallel to the heat
pump circuit when a solar thermal system is not installed, as shown in the schematic
on page 14. When both heat pump and solar thermal systems are installed, the top
heat exchanger is connected to the heat pump circuit and the bottom heat exchanger
is connected to the solar circuit a shown in figure 2.
All Stainless Lite HP models are fitted with 3kW (230Vac, 50Hz) immersion heater for
raising the temperature of the stored water to above 60°C after the heat pump heating
cycle if necessary. During commissioning the actual temperature that the cylinder
reaches when the thermostat(s) operate should be tested and adjusted so that it
achieves a minimum of 60°C in order to comply with the Legionella pasteurisation
requirements. The technical details of the Stainless Lite HP models are listed in table 1.
Important notes:
1. All Stainless Lite HP models are suitable for both open vented and sealed primary
systems.
2. When used with a sealed primary heating system, the heat pump must incorporate
its own over heat thermostat.
3. Stainless Lite HP models must not be used with solid fuel boilers or steam as the
heat source.
4. Heat pumps can normally only heat the domestic hot water to between 45 – 50°C,
therefore provision should be made to periodically heat the cylinder to above 60°C
to prevent growth of legionella.
5. The cold supply elbow c/w drain tapping must be fitted as shown in figures 1 &
2. 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 content can
be drained out by the symphonic action.
Stainless Lite Heat Pump (HP) Slimline models:
The Stainless Lite HP Slimline cylinder is an unvented hot water storage cylinder fitted
with a 3m2 high efficiency coil. The coil has a low pressure loss due to it being a multiple
pass coil which enable high flow rates to be achieved through it. In addition due to
the coil being corrugated the heat transfer rate is higher than that of plain tube coil.
The cylinder has been specifically designed for heat pump applications. It incorporates
an immersion heater at the base of the unit which enables pasteurisation of the water.
This should be done on a regular basis in line with HWA guidance..
It has been designed on a slimline basis to enable it to fit into tighter locations.
Page 8
INSTALLATION
General Design Considerations
The cupboard footprint needs to be at least 650mm square for units up to 300 litres,
730mm for 400 litre 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 and fittings on the cylinder should be insulated, and the unit should
NOT be fixed in a location where the contents could freeze.
In new systems, pipes should be insulated to comply with building regs, the maximum
permissible heat loss is indicated in the table opposite, and labelled accordingly as follows:
i. Primary circulation pipes for domestic hot water circuits should be insulated
through their length, subject only to practical constraints imposed by the need
to penetrate joists and other structural elements.
ii. All pipes connected to hot water storage vessels, including the vent pipe, should
be insulated for at least 1 metre from their points of connection to the cylinder (or
they should be insulated up to the point where they become concealed).
In replacement systems, whenever a boiler or hot water storage vessel is replaced in
an existing system, any pipes that are exposed as part of the work or are otherwise
accessible should be insulated as recommended for new systems, or to some lesser
standard where practical constraints dictate.
The pipe connecting the boiler flow to the
appliance must not be less than 22mm
copper or equivalent.
Insulation of pipework
Pipe outside
diameter
Maximum
heat loss
15mm
7.89W/m
22mm
9.12W/m
28mm
10.07W/m
35mm
11.08W/m
Further guidance on converting heat loss limits
to insulation thickness for specific thermal
conductivities is available in TIMSA “HVAC
guidance for achieving compliance with Part L
of the Building Regulations”.
Mains Water Supply
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 optimum performance is achieved if the inlet
pressure is 3 bar dynamic. However, the Stainless
Lite will function with lower inlet pressures, but
this will reduce the performance. 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 BS EN 806-3:2006 and BS 8558:2011.
Combination Valve
I.V.
I.V.
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).
Page 9
INSTALLATION
INSTALLATION
Model Selection
Stainless Lite HP Model Selection Guide
Dwelling type
Suggested model
Number of
bedrooms
Number of
bathrooms and
shower rooms
Without solar
heating system (1)
With solar heating
system (2)
1-3
1 bathroom
HP180IND
HP180IND (FA=50m2)
2-3
1 bathroom +
1 shower room
HP180IND
HP210IND (FA=65m2)
2-3
1 bathroom +
2 shower rooms
HP180IND
HP250IND (FA=85m2)
2-4
2 bathrooms +
1 shower room
HP210IND
HP300IND (FA=110m2)
2-4
2 bathrooms +
2 shower rooms
HP250IND
HP400IND (FA=150m2)
3-5
2 bathrooms +
2 shower rooms
HP300IND
–
4-5
2 bathrooms +
3 shower rooms
HP400IND
–
Notes
1 Both top and bottom heat exchangers connected to heat pump circuit
2 Top heat exchanger connected to heat pump circuit and bottom heat exchanger
connected to solar circuit.
3 FA = Maximum floor area of the dwelling for compliance with the Building Regulations
The suggested model sizes shown in the table
opposite are based on a typical daily hot water
usage and on the assumption that the heat
pump will heat the domestic hot water to about
50°C. For higher specification, an increase of one
model size should be considered.
When selecting a solar model, it is important to
check the dedicated solar volume shown in table
1 is suitable for the total floor area of the dwelling
and/or net area of the solar collectors to ensure
compliance with the Building Regulations.
When sizing the hot water cylinder, please use
MCS guidelines in MIS3005 and also refer to BS
EN 806:1-5 AND BS EN 8558.
When Stainless Lite HP is connected to both heat
pump and solar thermal systems, then during
the winter period the solar contribution will
be negligible and the heat pump will only heat
about 65% of the cylinder volume. This should
be taken into account when selecting the model.
Please note that the two heat exchangers
must be connected in parallel to the heat
pump circuit when a solar thermal system is
not installed, as shown in the schematic below.
Stainless Lite HP Slimline Model Selection Guide
Dwelling type
Suggested model
Number of
bedrooms
Number of
bathrooms and
shower rooms
1-3
1 bathroom
HP180SL
2-3
1 bathroom +
1 shower room
HP180SL
2-3
1 bathroom +
2 shower rooms
HP180SL
2-4
2 bathrooms +
1 shower room
HP210SL
Hot Outlet
Secondary
Return Circuit
P&T Relief Valve
Tundish
Pump Non Return
Valve
Expansion
Vessel
To Drain
Heat Pump
Flow
Balanced
Cold
Outlets
ERV
NRV
PRV
Stop
Tap
Heat Pump
Return
Combination
Valve
Kitchen
Cold
Tap
Stainless Lite HP model without
solar heating system
Hot Outlet
Secondary
Return Circuit
P&T Relief Valve
Pump Non Return
Valve
Tundish
Mixed Hot
Water Out
Expansion
Vessel
Balanced
Cold
Outlets
To Drain
Heat Pump
Flow
Heat Pump
Return
Stop
Tap
INSTALLATION
Page 10
Kitchen
Cold
Tap
ERV
Solar Flow
Solar Return
NRV
PRV
Combination
Valve
INSTALLATION
Stainless Lite HP/Heat Pump Selection Guide
1 - Flow rates in various units for comparison with heat pump manufacturers data
m3/h
0.50
0.75
l/min
8.33
12.50 16.67 20.83 25.00 29.17 33.33 37.50 41.67 45.83 50.00 54.17 58.33 62.50 66.67 70.83
1.00
l/sec or kg/s
0.14
0.21
0.28
1.25
0.35
1.50
0.42
1.75
0.49
2.00
0.56
2.25
2.50
2.75
3.00
3.25
3.50
3.75
4.00
4.25
0.63
0.69
0.76
0.83
0.90
0.97
1.04
1.11
1.18
-
-
-
-
-
-
-
-
-
2 - Velocity in pipe (limited to 1 m/s maximum) for pipe sizing
m/s in 22mm
0.37
0.55
0.73
0.91
-
-
-
m/s in 28mm
0.23
0.34
0.45
0.56
0.68
0.79
0.90
-
-
-
-
-
-
-
-
-
m/s in 35mm
0.14
0.22
0.29
0.36
0.43
0.51
0.58
0.65
0.72
0.79
0.87
0.94
-
-
-
-
m/s in 42mm
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
3 - Operating power of heat exchanger suitable for cylinder based on a 5 degree temperature difference
kW @ 5K dt
3-4
4-6
5.5-8
7-10
180HP
8-12 10-14 11-16 13-18 14-20 16-22 17-24 18-26 20-28 21-30 23-32 24-34
-
-
-
-
180HP + Sol
180HP Slim
-
210HP
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
210HP + Sol
210HP Slim
-
-
-
-
-
-
-
-
-
250HP
-
-
-
-
-
-
-
-
-
250HP + Sol
-
-
-
-
-
300HP
-
-
-
-
-
300HP + Sol
-
400HP
-
400HP + Sol
-
-
-
-
4 - Pressure loss (bar) for each flow rate above in the available coil combinations
180HP
0.010 0.027 0.053 0.092 0.143 0.207 0.286 0.381 0.491 0.618 0.763 0.927 1.109 1.310 1.532 1.774
180HP + Sol
0.003 0.008 0.017 0.031 0.049 0.073 0.103 0.140 0.183 0.234 0.292 0.359 0.434 0.518 0.612 0.715
180HP Slim
0.004 0.010 0.018 0.030 0.044 0.062 0.083 0.108 0.136 0.167 0.202 0.241 0.283 0.329 0.379 0.432
210HP
0.017 0.040 0.074 0.118 0.173 0.239 0.316 0.405 0.505 0.617 0.741 0.877 1.025 1.184 1.356 1.540
210HP + Sol
0.013 0.033 0.064 0.107 0.164 0.234 0.318 0.417 0.532 0.663 0.810 0.975 1.156 1.356 1.574 1.810
210HP Slim
0.004 0.010 0.018 0.030 0.044 0.062 0.083 0.108 0.136 0.167 0.202 0.241 0.283 0.329 0.379 0.432
250HP
0.006 0.015 0.028 0.045 0.067 0.093 0.124 0.159 0.200 0.245 0.295 0.350 0.410 0.475 0.545 0.620
250HP + Sol
0.004 0.011 0.021 0.036 0.054 0.077 0.105 0.138 0.176 0.218 0.267 0.321 0.380 0.445 0.517 0.594
300HP
0.008 0.019 0.036 0.058 0.086 0.120 0.160 0.206 0.259 0.318 0.384 0.457 0.536 0.623 0.716 0.816
300HP + Sol
0.004 0.014 0.031 0.058 0.098 0.152 0.223 0.312 0.421 0.553 0.708 0.890 1.100 1.339 1.610 1.915
400HP
0.004 0.010 0.018 0.030 0.044 0.062 0.083 0.108 0.136 0.167 0.202 0.241 0.283 0.329 0.379 0.432
400HP + Sol
0.008 0.018 0.031 0.049 0.070 0.094 0.123 0.155 0.190 0.230 0.273 0.319 0.370 0.423 0.481 0.542
Stainless Lite HP/Heat Pump Selection Guide
The table above can be used to match heat pumps to heat pump cylinders.
To use, first obtain the maximum flow rate from the heat pump manufacture’s
instructions, match this to the flow rates in section 1 and follow this flow rate’s column
down through the other sections.
Section 2 shows the velocity in the pipe work of different diameters at this flow rate. A
maximum flow velocity of 1m/s has been chosen to limit flow noise. Use this section to
choose the correct pipe diameter.
Page 11
Section 3 shows the maximum operating power
of the coils in the cylinder. Shaded squares show
the range of operating powers suitable for a
cylinder in either of its set ups.
Section 4 shows the pressure loss across the
coils at this flow rate for all cylinders in both
configurations.
INSTALLATION
INSTALLATION
General Restrictions
Pipe Layout
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. 0Check the performance requirements of the terminal fittings with regard to flow/
pressure are suitable.
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 BS EN 806-1 to 5.
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 the
system is greater than normal. The shower head provided must also be suitable for
mains pressure supplies.
Some models are fitted with a secondary
return tapping as standard (see table 1 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 13.) All pipes
kept hot by the secondary circulation should
be insulated.
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.
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)
INCOMING COLD SUPPLY
INSTALLATION
Page 12
DC
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.
600 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 Table 1:
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.
Table 1: 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 600mm 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 BS EN 806-2:2005
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.
Page 13
INSTALLATION
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:
Hot Outlet
Secondary
Return Circuit
1. Ideally below the fixed grating and above the water seal in a trapped gulley.
P&T Relief Valve
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.
Tundish
Pump Non Return
Valve
Expansion
Vessel
To Drain
Heat Pump
Flow
Balanced
Cold
Outlets
ERV
NRV
PRV
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.
Heat Pump
Return
Stop
Tap
Combination
Valve
Kitchen
Cold
Tap
Stainless Lite HP model without
solar heating system
Hot Outlet
Secondary
Return Circuit
Mixed Hot
Water Out
P&T Relief Valve
Pump Non Return
Valve
Safety
Expansion
Vessel
Tundish
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).
Balanced
Cold
Outlets
To Drain
Heat Pump
Flow
Heat Pump
Return
ERV
PRV
Solar Return
Stop
Tap
NRV
Solar Flow
Combination
Valve
Kitchen
Cold
Tap
Combination Inlet Group
Stainless Lite HP model with
solar heating system
Combines elements 1, 2 and 3 below.
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.
Hot Outlet
Secondary
Return Circuit
P&T Relief Valve
2. Non Return Valve - This is integral with the pressure reducing valve to prevent
backflow of hot water towards cold water draw off points.
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.
Tundish
Pump Non Return
Valve
Heat Pump
Flow
To Drain
Expansion
Vessel
Balanced
Cold
Outlets
ERV
Stop
Tap
Heat Pump
Return
Kitchen
Cold
Tap
NRV
PRV
Combination
Valve
Stainless Lite Slimline HP model
without solar heating system
INSTALLATION
Page 14
INSTALLATION
Temperature/pressure Relief Valve
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.
Thermostat
E
L
The operation of the boost immersion heater can
also be controlled by means of an independent
time switch as shown schematically below. The
‘ON’ time settings on the immersion heater
should be between 30 - 60 minutes later than
the ‘ON’ times set for the hot water programmer
channel.
For example if the hot water is programmed to
come on between 0600 - 0900 and 1700 - 2200
then the immersion heater setting should be
0640 - 0900 and 1740 - 2200. This will give hot
water heating by heat pump a priority.
N
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.
Safety
Cut-out
Immersion Heater Wiring
Immersion Heater
Tundish
All stainless Lite HP models are fitted with a 3kW immersion heater so that the store
temperature can be raised above that which the heat pump provides, to boost the
hot water performance if necessary and to protect against legionella eg. once a day
or once a week.
These are 3kW 240V AC heaters and incorporate a thermostat and a manually reset
energy cut-out which operates at 85°C. They have incalloy elements to prolong their
life expectancy in aggressive water conditions.
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. This can be purchased as an extra from your Gledhill depot
under code number SH002.
This is to allow the discharge from any Relief
Valve to be seen. It must be fitted away from
any electrical devices. See page 13 for discharge
pipework details.
Safety
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.
Control/overheat Dual Thermostats
Care must be taken to ensure that the solar
probes are fully inserted into the pockets
provided.
Typical schematic wiring diagram for the boost immersion heater
using immersion programmable immersion heater timer.
Page 15
INSTALLATION
INSTALLATION
Schematic Open Vented Primary System
Warming/Overflow
Pipe
Schematic Open Vented Primary System (Slimline models)
Warming/Overflow
Pipe
F & E Cistern
F & E Cistern
Motorised Valve
(Energy cut-out)
Motorised Valve
(Energy cut-out)
Minimum
distance as
required by
heat pump
manufacturers
instructions
Minimum
distance as
required by
heat pump
manufacturers
instructions
Motorised Valve
Pump
Motorised Valve
Pump
150mm max.
150mm max.
Heat Pump
Heat Pump
Schematic Sealed Primary System
Schematic Sealed Primary System (Slimline models)
Motorised Valve
(Energy cut-out)
Motorised Valve
(Energy cut-out)
Expansion
Vessel
Safety Valve
Expansion
Vessel
Safety Valve
Gauge
Gauge
Motorised Valve
Motorised Valve
Pump
Pump
Heat Pump
Heat Pump
Heating And Primary Systems
Although the heat pump and the primary heating system should be sized and installed
in accordance with BS EN 12828:2003, BS EN 12831:2003 & BS EN 14336:2004 the
following should also be taken into account during the design and installation phase.
The heat supply to the cylinder and hence the
temperature of the stored water should be
controlled as outlined below: -
The heat pumps normally operate at lower flow temperatures; typically 45 – 55°C
compared with 75 – 80°C for the boilers. Therefore if traditional radiators are used
then, these should be oversized in accordance with the heat pump manufacturers
recommendations.
• Heat supply from the primary heat source
i.e. heat
The 2-port spring return motorised valve
supplied should be fitted adjacent to the unit
and controlled by the cylinder thermostat
(combined control and overheat thermostat)
supplied with the unit. The motorised valve
and the thermostat must be wired so that the
motorised valve switches off when either the
control thermostat contact breaks when the
set temperature is reached or the overheat
thermostat contacts break when an overheat
condition develops. The operation of the
heat source should be controlled via the
auxiliary switch of the motorised valve.
It is important to follow the wiring diagrams
in the wiring section of these instructions.
For optimum efficiency (i.e. COP of a heat pump), low temperature under floor heating
system should be considered.
The heat pumps normally operate at lower temperature difference between flow and
return compared with the traditional boilers and therefore when sizing the pipework
heat pump manufacturers recommendations should be taken into account.
Safety
Stainless Lite HP is fitted with a combined temperature and pressure relief valve to
cope with any increase in temperature and pressure in the cylinder above the design
limits, when used with heat sources up to 45kW total output. This is the maximum
heat input to the cylinder allowed by section G3 of the ‘Approved Document G’ of
the Building Regulations.
INSTALLATION
Page 16
INSTALLATION
• Sealed heating system
A heat pump selected must be suitable for use in a sealed heating system which
may have working pressure of up to 3.0bar and it must be fitted with an overheat
temperature cut-out device.
Unvented (i.e. sealed primary circuits may be filled or replenished by means of a
temporary connection between the circuit and a water supply pipe provided a
WRC ‘Listed’ double check valve and filling loop 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.
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.
• Open vented heating system
It is essential that the primary circuit
between the boiler and the Stainless Lite is
pumped and that the cold feed and open
vent connections are positioned to prevent
pup over into the feed and expansion cistern
and to ensure that the open vent is correctly
sized. A typical arrangement of the open
vented system is shown in diagram opposite.
Stainless Lite HP system configuration with solar thermal heating system
PRV
Expansion
vessel
Central heating zone valve
Solar
pumping
station
Hot water zone valve
System pump
Heat pump
Solar circuit
zone valve
Primary circuit
PRV sealed system kit
Central heating
flow and return
Solar Heating System
Stainless Lite HP is suitable for use with combined heat pump and solar thermal heating
systems. All components in a solar primary circuit must be marked or identified in
such a way that their design pressure and temperature can be readily determined
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.
The pipe leading to the safety device and the collector should be of rigid and nondeformable construction, without any possibility of restriction or disclosure by any
other fitted component. A more detailed diagram of our recommended arrangement
for a typical solar system is shown on page 15.
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 pocket provided for the Dual Thermostat also includes the facility to accommodate
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.
Page 17
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 12 of this manual. NB.
Overheat thermostats may require resetting if
the solar thermal heat source raises the cylinder
temperature above 85°C.
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
12 13
Solar
Pumping
Station
T
T
Anti Gravity
Check Valve
N R2 N R1 N L
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 18
8
9
10
Standard 10 way
wiring junction box
(Not supplied)
Typical schematic wiring diagram for Stainless Lite HP heating system.
Please refer to the heat pump manufacturers installation instructions.
INSTALLATION
Page 19
INSTALLATION
INSTALLATION
Connections can come loose in transit, and all should be checked before installation.
Ensure that the immersion heater achieves a temperature of at least 60°C in the store
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 water in the cylinder is free to expand in atmospheric pressure or the cylinder
and relevant pipe work is empty.
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.
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 should not operate during the
heating cycle.
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.
The boiler/heating systems should be filled and
commissioned in accordance with good practice
following the guidance in BS 7593:2006/the
boiler manufacturers instructions. This includes
adequately flushing the system to remove any
debris that may have been introduced during
installation/maintenance.
In line with good plumbing practice, use with excessive flux should be avoided.
NOTE
When soldering above the cylinder, ensure flux/solder does not contaminate the
cylinder below, since this can cause corrosion, Flushing should be done performed
as per BS EN 806:4 2010 section 6.2
At the time of commissioning, complete all
relevant sections of the Benchmark Checklist
located on the inside back pages of this
document.
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 BS EB 806:4 2010 section 6.3 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 dased 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 heat pump and the immersion heater
2 Open the nearest hot tap and run all hot water until cold
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
5 Open all the taps in the property
6 Open the drain cock and immediately hold open the pressure and
temperature relief valve again 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
COMMISSIONING
Page 20
This must be completed during commissioning
and left with the product to meet the Warranty
conditions offered by Gledhill.
USER INSTRUCTIONS
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 heat pump control thermostat should switch to the hot water zone valve
before the heat pump starts to cycle on its internal thermostats. For example if the
maximum primary flow temperature available from the heat pump is 55°C, then the
control thermostat should be set to 48°C. (This setting should not be changed by
the occupant.)
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 21
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. Check and clean filter
2. Manually check the operation of the temperature relief valve.
3. Manually check the operation of the expansion relief valve.
4. 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 at 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.
After servicing, complete the relevant Service Interval Record section of the Benchmark
Checklist located on the inside back pages of this document.
SERVICING AND MAINTENANCE
Page 22
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 23
SERVICING AND MAINTENANCE
SERVICING AND MAINTENANCE
FAULT - No Hot Water
START
YES
NO
Is heat pump on?
Switch on
YES
Is hot water programmer
in ‘on’ position?
NO
Set programmer
YES
NO
Is zone valve in
correct position?
Re-set, check wiring &
plumbing is correct
YES
Is control temperature
set at 45ºC - 50ºC?
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 - 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 FINDING
Page 24
SERVICING AND MAINTENANCE
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?
YES
NO
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
SPARE PARTS LIST
Description
Quantity
Stock Code No.
SH001
1
3kW immersion element
1
2
22mm 90° compression elbow c/w/drain
1
SF003
3
Pressure and temperature relief valve 6 bar 92-95°C
1
SG001
4
Inlet group set at 3 bar c/w expansion relief valve set at 4.75 bar
1
SG010
5
¾” flexible hose
1
SG003
6
18 litre expansion vessel
1
XG191
7
24 litre expansion vessel
1
XG192
8
Wall mounting bracket for 18/24 litre expansion vessel
1
XG184
9
35 litre expansion vessel
1
XG193
10
Wall mounting bracket for 35 litre expansion vessel
1
XG058
11
22mm 2 port valve (indirects only)
1
XG083
12
Junction wiring box (12 way)
1
XG129
13
Control and overheat limit thermostat
1
XG168
14
15mm x 22mm tundish
1
XG173
15
28mm 2 port valve
1
XC012
Page 25
FAULT FINDING/SHORT PARTS LIST
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
APPENDIX A
Page 26
APPENDIX
MANUALHANDLINGOFAPPLIANCEPRODUCTS
e. Taking the lead for team lifts- As
more than one person is required
for these products ensure that one
Manualhandlingmeansanytransportingorsupportingofaload(includinglifting,
person is taking the lead. This may
puttingdown,pushing,pulling,carryingormoving)byhandorbodilyforce.
be you so ensure that each person
thatishelpingismadeawareofthe
Scope
weightandoftheitemslistedwithin
thisassessment.Makesureyouand
Thisassessmentwillcoverthelargestunitwithineachproductrangemanufactured
any others helping know the route
byGledhill.
you intend to take that it is clear of
anyobstructions.Neverjerktheload
asthiswilladdalittleextraforceand
Forspecificweightsanddimensionspleaserefertotechnicaldatasection.
can cause severe strain to the arms,
backandshoulders.Iftherearesteps
MainHazards
involved decide on where you will
stop and take a rest period. Move
Visionmaynotbeclearduetothesizeoftheproducts.
smoothly and in unison taking care
Adoptinganincorrectmethodofliftingmaycauseinjury,attemptingtoliftthese
to look and listen to others helping
productswillrequirehelpfromothers.(Teamlifts)
with the lift. Where possible use
a sack truck to move the product
over long flat distances, only lift the
ControlMeasures
productswhennecessary.Ifindoubt
stopandgetmorehelp.
Manualliftingprocedure
Description
Individualcapability
Thelift,keyfactorsinsafeliftingare:
Individual capability plays an important
partinhandlingtheseproducts.Persons
above average build and strength will
find it easier and should be in good
health.Personsbelowaveragebuildand
strength may require more rest periods
duringthehandlingprocess.
a.
b.
c.
d.
e.
Balance
Positionofback
Positioningofthearmsandbody
Thehold
Takingtheleadforteamlifts
a.
Balance-Sincebalancedependsessentiallyuponthepositionofthefeet,
theyshouldbeapartabouthipbreadthwithonefootadvancedgivingfull Pregnant women should not carry out
balancesidewaysandforwardwithouttension.Intakingupthisposition, thisoperation.
liftingisdonebybendingatthekneesinsteadofthehipsandthemuscles
Persons who are not in good health
thatarebroughtintousearethoseofthethighandnottheback.
should seek medical advice prior to
commencing any lifting or manual
Position of back - Straight - not necessary vertical.The spine must be handlingoperation.
keptrigid,thiscoupledwithabentkneeposition,allowsthecentrelineof
gravityofthebodytobeovertheweightsoreducingstrain.
Residualrisk
b.
c.
d.
Positioningofarmsandbody-Thefurtherarmsareawayfromtheside, Followingtheguidelinesgivenabovewill
thegreaterthestrainontheshoulders,chestandback.Keepelbowsclose reduceanyrisktoinjury.
tothebodyarmsshouldbestraight.
All persons carrying out this operation
must be fully trained and copies of the
Thehold-Beforeliftingensureyouhaveagoodhold.
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
OperationsRegulations1992.
Page 27
APPENDIX b
Gledhill (Building Products) Ltd
TERMS AND CONDITIONS
AMD.DECEMBER 2013
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. The water quality
shall be in accordance with European Council Directive 98/83 EC, or revised version at the date of installation,
and is not fed with water from a private supply. Particular:
Chloride content:
Max. 200 mg/l
Sulphate content:
Max. 200 mg/l
Combination chloride/sulphate:
Max. 300 mg/l (in total)
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.
9.2.9. If the newly fitted water heater is not in regular use then it must be flushed through with fresh water for at least
15 minutes. Open at least one hot water tap once per week, during a period of at least 4 weeks.
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).
Page 28
(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.
(c) StainlessLite 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 against material defect or
manufacturing faults 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 supplied from the public mains, 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
We will require the return of a cylinder which develops
a leak for inspection. If our examination confirms a
failure then an appropriate level of credit against the
cost of the original cylinder will be issued in line with
the terms of our warranty.
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
Page 29
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 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
(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
demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference.
Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.
MAINS
PRESSURE HOT WATER STORAGE SYSTEM COMMISSIONING
CHECKLIST
Customer name:
Telephone number:
Address:
This Commissioning Checklist is to be completed in full by the competent person who commissioned the storage system as a means of
Cylinder Make and
Model
demonstrating
compliance
with the appropriate Building Regulations and then handed to the customer to keep for future reference.
Cylinder Serial Number
Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.
Commissioned by (PRINT NAME):
Registered Operative ID Number
Company name:
Telephone number:
Company address:
Customer name:
Telephone number:
Commissioning date:
Address:
To be completed by the customer on receipt of a Building Regulations Compliance Certificate*:
Cylinder Make and Model
Building Regulations Notification Number (if applicable)
Cylinder Serial Number
ALL
SYSTEMSby
PRIMARY
SETTINGS (indirect heating only)
Commissioned
(PRINT NAME):
Registered Operative ID Number
Is
the primary
circuit a sealed or open vented system?
Company
name:
Sealed
Telephone
number:
Open
What
is theaddress:
maximum primary flow temperature?
Company
°C
Commissioning date:
ALL SYSTEMS
To be is
completed
by the
customer
on receipt
of aatBuilding
Compliance Certificate*:
What
the incoming
static
cold water
pressure
the inletRegulations
to the system?
bar
Building
Regulations
Notification
Number (ifdebris
applicable)
Has
a strainer
been cleaned
of installation
(if fitted)?
Yes
Is
theSYSTEMS
installationPRIMARY
in a hard water
area (above
200ppm)?
ALL
SETTINGS
(indirect
heating only)
Yes
No
Yes
No
Open
If
has a water
scale
reducer
been vented
fitted? system?
Is yes,
the primary
circuit
a sealed
or open
Sealed
No
What
scale reducer
hasflow
been
fitted?
What type
is theofmaximum
primary
temperature?
°C
What is the hot water thermostat set temperature?
ALL SYSTEMS
What is the maximum hot water flow rate at set thermostat temperature (measured at high flow outlet)?
What is the incoming static cold water pressure at the inlet to the system?
Time and temperature controls have been fitted in compliance with Part L of the Building Regulations?
Has a strainer been cleaned of installation debris (if fitted)?
Type of control system (if applicable)
Is the installation in a hard water area (above 200ppm)?
Is the cylinder solar (or other renewable) compatible?
If yes, has a water scale reducer been fitted?
What is the hot water temperature at the nearest outlet?
What type of scale reducer has been fitted?
All appropriate pipes have been insulated up to 1 metre or the point where they become concealed
What is the hot water thermostat set temperature?
°C
Y Plan
Yes
S Plan
Yes
Yes
Yes
Yes
°C
UNVENTED
SYSTEMS
What is the maximum
hotONLY
water flow rate at set thermostat temperature (measured at high flow outlet)?
I/min
Where
is the
pressure reducing
valvebeen
situated
Time and
temperature
controls have
fitted(ifinfitted)?
compliance with Part L of the Building Regulations?
What
is control
the pressure
reducing
valve setting?
Type of
system
(if applicable)
I/min
bar
Yes
No
Other
No
No
No
°C
Yes
Y Plan
Has
combined
temperature
and pressure
relief valve and expansion valve been fitted and discharge tested?
Is thea cylinder
solar
(or other renewable)
compatible?
S Plan
Yes
Yes
The
andwater
discharge
pipework
been connected
Whattundish
is the hot
temperature
at have
the nearest
outlet? and terminated to Part G of the Building Regulations
bar
Other
No
No
°CYes
Are
all energy sources
fitted
withinsulated
a cut out up
device?
All appropriate
pipes have
been
to 1 metre or the point where they become concealed
Yes
No
Yes
Has the expansion vessel or internal air space been checked?
UNVENTED SYSTEMS ONLY
Yes
No
THERMAL
Where is theSTORES
pressureONLY
reducing valve situated (if fitted)?
What
is achievable?
What store
is the temperature
pressure reducing
valve setting?
bar
What
the maximum
hot water
temperature?
Has aiscombined
temperature
and
pressure relief valve and expansion valve been fitted and discharge tested?
Yes
The
and discharge pipework have been connected and terminated to Part G of the Building Regulations
ALL tundish
INSTALLATIONS
No
°C
°C
Yes
Are
sourcescomplies
fitted withwith
a cut
device? Building Regulations
The all
hotenergy
water system
theout
appropriate
Yes
No
Yes
Has system
the expansion
vessel
or internal
air space been
The
has been
installed
and commissioned
in checked?
accordance with the manufacturer’s instructions
Yes
No
Yes
The
systemSTORES
controls have
been demonstrated to and understood by the customer
THERMAL
ONLY
Yes
The
literature,
including Benchmark Checklist and Service Record, has been explained and left with the customer
Whatmanufacturer’s
store temperature
is achievable?
Yes
What is the maximum
hot water
temperature?
Commissioning
Engineer’s
Signature
°C
°C
Customer’s
Signature
ALL INSTALLATIONS
(To
confirm
satisfactory
demonstration
receipt ofBuilding
manufacturer’s
literature)
The hot water system complies
with theand
appropriate
Regulations
Yes
The system has been installed and commissioned in accordance with the manufacturer’s instructions
Yes
The system controls have been demonstrated to and understood by the customer
Yes
The manufacturer’s literature, including Benchmark Checklist and Service Record, has been explained and left with the customer
Yes
Commissioning Engineer’s Signature
Customer’s Signature
(To confirm satisfactory demonstration and receipt of manufacturer’s literature)
*All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a
Competent Persons Scheme. A Building Regulations Compliance Certificate will then be issued to the customer.
www.centralheating.co.uk
© Heating and Hotwater Industry Council (HHIC)
While this Checklist can be used for any installation covered by its description, only appliances manufactured by Scheme Members will
be covered by the rules and requirements of the Benchmark Scheme.
*All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a
Competent Persons Scheme. A Building Regulations Compliance Certificate will then be issued to the customer.
BENCHMARK
© Heating and Hotwater Industry Council (HHIC)
Page 30
www.centralheating.co.uk
SERVICE RECORD
It is recommended that your hot water system is serviced regularly and that the appropriate Service Record is completed.
Service Provider
Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions.
SERVICE 01
Date:
SERVICE 02
Engineer name:
Engineer name:
Company name:
Company name:
Telephone No:
Telephone No:
Comments:
Comments:
Signature
Signature
SERVICE 03
Date:
SERVICE 04
Engineer name:
Engineer name:
Company name:
Company name:
Telephone No:
Telephone No:
Comments:
Comments:
Signature
Signature
SERVICE 05
Date:
SERVICE 06
Engineer name:
Engineer name:
Company name:
Company name:
Telephone No:
Telephone No:
Comments:
Comments:
Signature
Signature
SERVICE 07
Date:
SERVICE 08
Engineer name:
Engineer name:
Company name:
Company name:
Telephone No:
Telephone No:
Comments:
Comments:
Signature
Signature
SERVICE 09
Date:
SERVICE 10
Engineer name:
Engineer name:
Company name:
Company name:
Telephone No:
Telephone No:
Comments:
Comments:
Signature
Signature
Page 31
Date:
Date:
Date:
Date:
Date:
BENCHMARK
Protect your Gledhill
product after your
initial warranty period
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 call 08445 679898 or visit www.gledhill.net for further details
For any spare part requirements on
this product simply scan the
QR code using your smart phone app
or go to www.gledhill-spares.net
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
Further information on Gledhill products can be found at www.gledhill.net
“Only the best
is acceptable”
FM 02057
Due to a programme of continuous improvement Gledhill Building Products reserve the right to modify products without prior notice.
It is advisable to check the product technical detail by using the latest design and installation manuals available from our technical support team or on our website.
It is an offence to copy or adapt this document without consent of the owner.
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