Torrent ECO Technical Manual
Torrent ECO
Open vented thermal store providing heating and mains pressure hot water
Design, Installation & Servicing Instructions
Models covered in this manual
Torrent ECO OV TEC140-TEC350
Torrent ECO SP TEC140-TEC350
Torrent ECO SOL TEC210-TEC450
Torrent ECO HP TEC170-TEC450
Torrent ECO HPSOL TEC210-TEC450
These instructions should be read in conjunction with the installation/servicing
instructions issued by the manufacturer of the heat source being used.
Any installation must be in accordance with the relevant requirements of the Gas
Safety Regulations, Building Regulations, I.E.E. Wiring Regulations and the Water
Fitting Regulations (England and Wales) or Water Byelaws (Scotland). It should be
read in accordance with the relevant recommendations of the following:
BS 6798; BS 5549; BS 5546;
BS 5440:1; BS 5440:2; CP 331:3
BS 6700: BS 5258 and BS 7593: 1993 and BS7671
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.
This product overcomes Part G Building Regulation discharge requirements for
unvented cylinders but the installation is notifiable to building control unless it is
carried out under an approved competent person self-certification scheme.
Although the secondary supply (domestic) is at mains pressure, it is not necessary to
fit an expansion chamber, pressure or temperature relief valve, the plumbing should
allow any unusual build up of pressure to be relieved at the ball valve.
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 Torrent 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.
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.
For information on the HWA Charter Membership, go to the HWA website hotwater.org.uk.
Page 2
ISSUE 1: JUNE 2015
Section
Page
DESIGN
Description
Technical Information
System Design
3
6
10
INSTALLATION
Installation
Wiring Diagrams
Commissioning
Installation Review
14
27
38
40
SERVICING AND MAINTENANCE
Servicing and Maintenance
Fault Finding
Short Parts List
41
42
48
APPENDIX
Appendix A
Appendix B
49
50
Notes
51
Terms & Conditions
52
BENCHMARK
Commissioning Check List
Service Record
54
55
DESIGN
Manufacturer: Gledhill Building Products Ltd
Max. mains inlet water pressure
5.0bar
Max. working pressure - Primary heat exchanger (Indirect models) 3.0bar
Max. working pressure - Solar heat exchanger (Solar models)
6.0bar
Max. working pressure - Open vented thermal store (All models) 10.0m (1.0bar)
Max. working pressure - Open vented central heating system
10.0m (1.0bar)
Max. working pressure - Sealed heating system
3.0bar
Max. flow rate - Measured by flow sensor
50 l/min
Min. flow rate - Measured by flow sensor
3.5 l/min
Immersion heater rating
[email protected], 50Hz
The Torrent comes complete with plate heat exchanger. This has a very small
volume of water held within it, therefore any minimal expansion will be
accomodated in the supply pipe.
Handling Before Installation
The Torrent 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.
Maintenance
Modifications should not be made to this product. Replacement parts, including
immersion heaters, should be purchased from Gledhill Building Products Limited, or
agents approved by them. The manual must always be left with the Torrent.
Note:
The thermal store is supplied with Immersion heaters. These incorporate a thermostat
(XB114) which cuts the electricity supply to the immersion heater if the control
thermostat fails - a thermal cut out. Under no circumstances fit an immersion heater
which does not incorporate a thermal cut out. If the thermal cut out operates the
thermostat (XB114) is no longer effective and must be replaced.
Page 3
DESCRIPTION
DESIGN
Gledhill developed the principal of domestic thermal stores starting in 1982 and
they have been manufacturing them since then.
Their importance to plumbing systems is described below.
a) Why use a thermal store - Alternative energy fuel sources are typically low grade,
inherently unpredictable and are often available in plentiful supply but not when
the heat energy is needed! A thermal store provides the means to harness the
energy when it is available for later conversion into both hot water AND heating.
Being open vented, they provide a simple and inherently safe way to produce highperformance mains pressure hot water. So the householder can enjoy the comfort
and luxury of a mains pressure system produced from alternative energy sources.
The alternative energy feeds into the thermal store which is also the water that
circulates around the heating system. This means that the energy available from
solar panels or a wood burning stove, for example, can be used to provide energy
into the heating circuit to decrease the use of fossil fuel based boilers, and hence
reduce household running costs.
It is very problematic and inherently unsafe to connect wood burning stoves or
other uncontrolled heat sources to an unvented cylinder, and not easily possible
to combine alternative energy heat sources to provide energy to the heating
circuit, hence the unique advantages of a thermal store.
b) The heart of an alternative energy system - The Torrent ECO is the ideal product
to use as the heart of an alternative energy system as it will take energy input not
only from a conventional boiler but also from a wide variety of alternative energy
sources, including but not limited to:
•
•
•
•
solar panels
wood burning stoves and other uncontrolled heat sources
ground or air source heat pumps
electricity from renewable or low carbon sources
If the system is configured appropriately the heat from the alternative energy
source will be available for both hot water AND heating. This is only possible with
a thermal store such as the Torrent and is not possible with an unvented cylinder
where you will only get an alternative energy contribution to the hot water.
c) In-built upgrade potential - You are able to specify from the required tappings,
with any future requirements, for example, a wood burning stove or solar panels
can be added as an upgrade to the property at a later stage and the hot water
cylinder will be ready to work with it.
d) Neutral Point - The Torrent ECO becomes the neutral point in any open vented
system because the open vent and cold feed pipes are connected to it. The benefit
of this is that another device to enable different systems to be joined together at a
neutral point is not required, which would be required in other systems. In multiple
fuel systems, the Torrent acts as a low loss header.
e) Apartments – The Torrent open vented thermal store does not need a discharge pipe
from a pressure and temperature relief valve, unlike an unvented cylinder which does.
This combined with the fact that discharges are not permitted into PVCu soil stacks
makes the installation of un-vented stores in apartments difficult and expensive.
f) Legionella Risk – Alternative energy supplies cannot be relied upon to raise the
temperature of the stored water above 60 degrees every time they operate. This
is not a problem with a thermal store because the store water is not the water that
comes out of the tap. The water that comes out the hot tap is mains cold water
run through a plate heat exchanger on the outside of the thermal store. This water
heats very quickly and the volume of stagnent water in the heat exchanger is very
small so there is virtually no legionella risk.
DESCRIPTION
Page 4
g)Less controls – The thermal store is open
vented and therefore does not require
additional safety devices such as temperature
and pressure relief valves or an inlet control
group and expansion vessels.
h) Building Regulation – The thermal store,
being open vented, does not require
Building control to be notified to comply
with section G3 of the building regulations,
unlike an unvented cylinder which does.
i) Annual inspection – The running costs of this
cylinder are greatly reduced by not being
required to have an annual safety inspection
where as an unvented cylinder does.
The Torrent provides high performance mains
pressure hot water without the additional costs
incurred with an unvented cylinder.
The Torrent ECO is available in the following
basic variants:Torrent ECO OV
The Torrent ECO OV utilises an open vented
boiler and / or direct electric immersion
heaters as its primary energy source. It is
available with tappings for a woodburning
or solid fuel boiler, but if any of the standard
tapping are not required, they can be removed
at the time of order.
One of the benefits of the open vented boiler
configuration is that the whole output of the
boiler is available to the thermal store, unlike
the indirect Sealed Primary (SP) version where
the output from the boiler is limited by the heat
exchanger. This will provide an improvement in
the operational efficiency of the boiler, reducing
the primary energy usage and running costs.
The Torrent ECO OV provides highperformance mains pressure hot water. The
heat energy provided from the primary heat
source and / or solid fuel input is circulated
from the store to the central heating circuit,
allowing rapid heat-up of a radiator system.
In situations where no gas or solid fuel source
is available the Torrent ECO OV can be used
exclusively from the two 3kW electric immersion
elements which will provide both hot water and
auxiliary heating for the property. The obvious
application is apartments where no gas main
is available but this could also be appropriate
where electricity is available from a renewable or
low carbon source.
If connected to the standard grid then the
thermal store is the perfect solution to maximise
usage of an off peak tariff where arrangements
DESIGN
should be made to power the lower immersion element in order to minimise the running
costs. It is important to note that the design heat loss, of the rooms to be heated, must
be less than the lowest immersion power. If the design heat loss is greater than this, the
heating will need to be supplemented by another heat source.
The Torrent ECO OV is designed to be heated directly (i.e. without internal heat
exchangers) by one or more of the following heat sources;
• Site fitted electric immersion heaters e.g. to utilise off peak electricity
• A remote gas or oil boiler
• A solid fuel boiler or stove
Torrent ECO SP
The Torrent ECO SP utilises a sealed system boiler as its primary energy source. It is
available with optional tappings for a woodburning or solid fuel boiler. If any of the
standard tapping are not required, they can be removed at the time of order. The
Torrent ECO SP provides high-performance mains pressure hot water.
Where a sealed primary coil is used, the thermal store is a hot water only thermal store. If
too much heat is taken out of the store, then hot water performance will be limited. The hot
water priority should be protected by use of an appropriate thermostat. The central heating
circuit is normally supplied directly from the boiler although an auxiliary heating circuit
can be connected from the store in which case the solid fuel source will provide energy
to the auxiliary heating circuit. Obviously, the energy output that can be provided by the
auxiliary heating circuit will be limited to the energy input from the solid fuel appliance.
This sealed primary (SP) model permits the use of a smaller feed and expansion tank
because the main central heating circuit does not need to be catered for. This can
make positioning the F&E tank more straightforward.
An immersion boss is provided for a site fitted immersion heater, and it is normally
envisaged that this will be used as an emergency electric back-up for hot water and
to provide emergency energy to the auxiliary heating circuit.
The Torrent ECO SP is designed to be heated by one or more of the following heat
sources;
• Directly by an electric immersion heater as a backup heat source only
• Indirectly (i.e. via a heat exchanger) by a remote gas or oil boiler
• Directly by a solid fuel boiler or stove
Torrent ECO SOL
The Torrent ECO SOL utilises either a sealed system boiler and / or an open vented
boiler as its primary energy source. It also has a high-efficiency solar coil to allow the
homeowner to benefit from a wide variety of alternative energy inputs. It is available
with optional tappings for a woodburning or solid fuel boiler. If any of the standard
tapping are not required, they can be removed at the time of order.
The Torrent ECO SOL provides high-performance mains pressure hot water.The
central heating circuit can be supplied directly from a sealed system boiler although
an auxiliary heating circuit can be connected from the store in which case both the
solar and solid fuel energy will also provide an input to the auxiliary heating circuit.
Alternatively, an open vented boiler can be used to directly heat the store so that
the energy will be available for both hot water and auxiliary central heating circuit.
The cylinder comes with two return connections for solid fuel and woodburning
stoves to enable the homeowner to have an aga running 24 hours a day but still
retaining the dedicated solar volume.
An immersion boss is provided for a site fitted immersion heater, and it is normally
envisaged that this will be used as an emergency electric back-up for hot water and
to provide emergency energy to the auxiliary heating circuit.
Page 5
The Torrent ECO SOL is designed to be heated
by one or more of the following heat sources;
• Directly by an electric immersion heater as
a backup heat source only
• Either indirectly or directly by a remote gas
or oil boiler
• Directly by a solid fuel boiler or stove
• Indirectly by solar thermal system
Torrent ECO HP Models
The Torrent ECO HP and HP SOL are directly
heated, open vented thermal stores designed
for use with an air source or a ground source
heat pump. It is available with optional tappings
for a woodburning or solid fuel boiler. If any of
the standard tapping are not required, they can
be removed at the time of order.
Although the thermal store is open vented,
the mains pressure hot water is heated
instantaneously via the plate heat exchanger.
The Torrent ECO HP range of primary thermal
stores are only suitable for open vented heating
systems but they provide mains pressure hot
water without the requirements of a pressure
and temperature relief valve.
An immersion boss is provided for a site fitted
immersion heater, and it is normally envisaged
that this will be used as an emergency
electric back-up for hot water and to provide
emergency energy to the auxiliary heating
circuit.
The suggested model sizes are based on typical
hot water usage and the store charged to about
75°C. If the store charge temperature is going
to be lower, then a larger model should be
considered. This is especially important where
the heat pump alone is unable to charge the
store to 75°C as is likely to be the case with a
heat pump. If the immersion element is used
to raise the temperature of the store, then
a suitable control system should be used
to ensure the immersion element does not
operate until the heat pump has raised the store
to the maximum temperature, or the overall
efficiency of the system will be reduced.
The Torrent ECO HP and HP SOL are designed
to be heated by one or more of the following
heat sources;
• Directly by a ground source or air source heat
pump
• Directly by an electric immersion heater as
a backup heat source only
• Directly by a solid fuel boiler or stove
• Indirectly by solar thermal system
DESCRIPTION
DESIGN
Torrent ECO SP
A
Z
Q
F
H
I
B
Y
E
D
O
S
X
L
N
T
T
O
S
X
U
N
P
J
K
K
Q
I
G
H
F
B
Y
E
D
Z
A
Torrent ECO OV
Domestic Hot Water Volume
Overall Height
Overall Diameter
Domestic Hot Water
From Plate Heat Exchanger
Solar Sensor
Store Overheat
Domestic Hot Water
Store Sensor
Solid Fuel Flow
Open Vented Boiler Flow
Central Heating Flow
On Peak
Backup Immersion Heater
Sealed Primary Boiler Flow
Control Stat
Sealed Primary Boiler Return
kg
litres
A
mm
mm
B
mm
C
mm
D
mm
E
mm
F
mm
G
mm
H
mm
I
mm
J
mm
K
mm
L
mm
Torrent
ECO OV
TEC140-OV
37
171
140
1219
535
490
n/a
1040
1040
545
545
505
570
n/a
395
n/a
TEC170-OV
39
202
170
1449
535
720
n/a
1270
1270
670
670
630
685
n/a
470
n/a
TEC210-OV
41
242
210
1414
585
680
n/a
1235
1235
685
685
645
690
n/a
455
n/a
TEC250-OV
43
282
250
1654
585
925
n/a
1475
1475
785
785
745
790
n/a
540
n/a
TEC350-OV
Torrent
ECO SP
TEC140-SP
53
388
350
1874
636
1140
n/a
1690
1690
890
890
850
895
n/a
615
n/a
42
176
140
1219
535
490
n/a
1040
1040
545
n/a
505
495
322
395
145
TEC170-SP
44
207
170
1449
535
720
n/a
1270
1270
690
n/a
650
570
322
470
145
TEC210-SP
47
248
210
1414
585
680
n/a
1235
1235
685
n/a
645
555
412
455
145
TEC250-SP
49
288
250
1654
585
925
n/a
1475
1475
785
n/a
745
640
432
540
165
TEC350-SP
Torrent
ECO SOL
TEC210-SOL
61
396
350
1874
636
1140
n/a
1690
1690
890
n/a
850
480
350
615
150
49
250
210
1414
585
680
920
1235
1235
845
845
805
455
702
705
525
TEC250-SOL
51
290
250
1654
585
925
1085
1475
1475
1005
1005
965
545
872
830
605
TEC350-SOL
63
398
350
1874
636
1140
1255
1690
1690
1010
1010
970
590
850
950
650
TEC450-SOL
68
499
450
1764
738
935
1185
1490
1490
1060
1060
1020
640
895
900
695
TECHNICAL INFORMATION
(Excluding F&E Tank)
Weight - Full
kg
Model
Weight - Empty
(Allow additional 150mm for PHE, see page 14)
Technical
Page 6
DESIGN
Torrent ECO SOL
NOTES
Cold Mains To
Plate Heat Exchanger
Solar Sensor
Plate Heat Exchanger Return
Solid Fuel return
Off Peak Immersion Heater
Solar Flow
Solar return
Cold Feed
Plate Heat Exchanger Flow
Open Vent
Surface Area of
Primary Heater Coil
Surface Area of
Solar Heater Coil
P
mm
Q
mm
R
mm
S
mm
T
mm
U
mm
V
mm
W
mm
X
mm
Y
mm
Z
mm
m2
m2
n/a
135
90
95
155
n/a
95
95
185
n/a
n/a
195
1040
1129
n/a
n/a
134
1.81
n/a
35
n/a
135
90
95
385
n/a
95
95
185
n/a
n/a
195
1270
1359
n/a
n/a
163
2.03
n/a
35
n/a
135
90
95
345
n/a
95
95
185
n/a
n/a
195
1235
1324
n/a
n/a
201
2.30
n/a
35
n/a
135
90
95
590
n/a
95
95
185
n/a
n/a
195
1475
1564
n/a
n/a
239
2.56
n/a
35
n/a
140
95
100
805
n/a
100
100
190
n/a
n/a
200
1690
1784
n/a
n/a
334
3.14
n/a
35
n/a
135
90
n/a
155
n/a
95
95
n/a
n/a
n/a
195
1040
1129
1.38
n/a
134
1.81
n/a
35
n/a
135
90
n/a
385
n/a
95
95
n/a
n/a
n/a
195
1270
1359
1.38
n/a
163
2.03
n/a
35
n/a
125
90
n/a
345
n/a
95
95
n/a
n/a
n/a
195
1235
1324
1.84
n/a
201
2.30
n/a
35
n/a
125
90
n/a
590
n/a
95
95
n/a
n/a
n/a
195
1475
1564
1.84
n/a
239
2.56
n/a
35
n/a
140
95
n/a
805
n/a
100
100
n/a
n/a
n/a
200
1690
1784
2.28
n/a
334
3.14
n/a
35
95
475
90
435
345
190
95
435
n/a
355
125
195
1235
1324
1.84
0.27
201
2.30
62
35
95
545
90
505
590
220
95
505
n/a
410
125
195
1475
1564
1.84
0.34
239
2.56
73
35
100
610
95
570
805
225
100
570
n/a
475
130
200
1690
1784
2.28
0.40
334
3.14
101
35
270
640
40
590
600
310
390
590
n/a
360
260
370
1490
1674
2.28
0.54
431
3.67
130
35
Page 7
Dedicated Solar Volume
Open Vented Boiler return
O
mm
Standing Losses kWhr/24hr
Drain
N
mm
Capacity (Total Volume)
Central Heating Return
M
mm
(Solar Model Only)
Solid Fuel Return
Maximum Hot Water Flow Rate
O
S
W
T
X
R
V
L
N
P
M
I
Q
B
K
J
F
G
H
C
Y
E
D
Z
A
1. The diagrams shown are generic. For
exact product specification refer to
the table eg. the number of immersion
heaters varies depending on model.
2. The specifications shown are the
standard range, but these can be
changed at the time of order to suit
specific installation requirements.
3. All connections are within 145˚, but if
more detail is required, please contact
our technical desk on 01253 474584 or
your local Gledhill depot.
4. 24 plate PHE used on all models apart
from heat pump models.
litres kWh litres
litres/
min
TECHNICAL INFORMATION
DESIGN
N
X
U
S
O
R
H
AA
W
J
T
G
L
V
P
F
B
D
BB
E
A
CC
Torrent ECO HP
Overall Height
Overall Diameter
Domestic Hot Water
From Plate Heat Exchanger
Solar Sensor
Store Overheat
Domestic Hot Water
Store Sensor
Solid Fuel Flow
Central Heating Flow
Central Heating
Boost Immersion Heater
Second Central Heating
Boost Immersion Heater
Domestic Hot Water
Backup Immersion Heater
Second Domestic Hot Water
Backup Immersion Heater
Control Stat
Solid Fuel Return
litres
A
mm
mm
B
mm
C
mm
D
mm
E
mm
F
mm
G
mm
H
mm
mm
J
mm
mm
L
mm
M
mm
TEC170-HP
37
171
170
1449
535
720
n/a
1270 1270
670
265
165
n/a
340
n/a
470
n/a
TEC210-HP
39
202
210
1414
585
680
n/a
1235 1235
665
255
160
n/a
325
n/a
455
n/a
TEC250-HP
41
242
250
1654
585
925
n/a
1475 1475
785
305
185
n/a
375
n/a
540
n/a
TEC350-HP
43
282
350
1874
636
1140
n/a
1690 1690
900
355
215
300
430
515
615
n/a
TEC450-HP
53
388
450
1764
738
935
n/a
1490 1490
880
390
310
395
510
595
630
n/a
TEC210-HPSOL
49
250
210
1414
585
680
920
1235 1235
845
550
490
n/a
625
n/a
705
95
TEC250-HPSOL
51
290
250
1654
585
925
1085 1475 1475 1000
655
580
n/a
730
n/a
830
95
TEC350-HPSOL
63
398
350
1874
636
1140 1255 1690 1690 1150
760
660
745
835
920
950
100
TEC450-HPSOL
68
499
450
1764
738
935
755
670
750
830
910
900
270
(Solar Model Only)
Domestic Hot Water Volume
kg
(Excluding F&E Tank)
Weight - Full
kg
Model
Weight - Empty
(Allow additional 150mm for PHE, see page 14)
Technical
Torrent
ECO HP
Torrent
ECO HP SOL
TECHNICAL INFORMATION
1185 1490 1490 1100
Page 8
DESIGN
Torrent ECO HP SOL
NOTES
Plate Heat Exchanger Return
Solid Fuel return
Heat Pump Flow
Heat Pump Return
Heat Pump Cylinder Sensor
Heat Pump Flow Sensor
Heat Pump Return Sensor
Solar Flow
Solar return
Cold Feed
Plate Heat Exchanger Flow
Open Vent
Surface Area of
Solar Heater Coil
Maximum Hot Water Flow Rate
Solar Sensor
P
mm
Q
mm
R
mm
S
mm
T
mm
U
mm
V
mm
W
mm
X
mm
Y
mm
Z
mm
AA
mm
BB
mm
CC
mm
m2
125
90
385
n/a
95
95
295
95
470
295
95
n/a
n/a
195
1270 1359
n/a
163
2.03
n/a
15
125
90
345
n/a
95
95
285
95
455
285
95
n/a
n/a
195
1235 1324
n/a
201
2.30
n/a
15
125
90
590
n/a
95
95
335
95
540
335
95
n/a
n/a
195
1475 1564
n/a
239
2.56
n/a
15
130
95
805
n/a
100
100
385
100
615
385
100
n/a
n/a
200
1690 1784
n/a
339
3.14
n/a
15
270
40
600
n/a
270
270
420
270
630
420
270
n/a
n/a
370
1490 1674
n/a
431
3.67
n/a
15
465
90
345
190
95
435
580
435
705
580
435
355
125
195
1235 1324
0.27
201
2.30
62
15
535
90
590
220
95
505
685
505
830
685
505
410
125
195
1475 1564
0.34
239
2.56
73
15
600
95
805
225
100
570
790
570
950
790
570
475
130
200
1690 1784
0.40
334
3.14
101
15
620
40
600
310
390
590
785
590
900
785
590
360
260
370
1490 1674
0.54
431
3.67
130
15
Page 9
Dedicated Solar Volume
Cold Mains To
Plate Heat Exchanger
O
mm
Standing Losses kWhr/24hr
Drain
N
mm
Capacity (Total Volume)
Central Heating Return
Z
M
Q
O
R
AA
Y
T
G
N
X
U
S
H
P
W
J
B
V
F
L
C
D
BB
E
CC
A
1. The diagrams shown are generic. For
exact product specification refer to
the table eg. the number of immersion
heaters varies depending on model.
2. The specifications shown are the
standard range, but these can be
changed at the time of order to suit
specific installation requirements.
3. All connections are within 145˚, but if
more detail is required, please contact
our technical desk on 01253 474584 or
your local Gledhill depot.
4. The domestic hot water volume and
maximum hot water flow rate figures
are based on the store temperature
being 75˚C.
5. Heat pump models use a 30 plate PHE.
litres kWh litres
litres/
min
TECHNICAL INFORMATION
DESIGN
1
Torrent ECO OV
4
3
2
5
6
7
8
9
11
10
13
15
12
14
16
Component kit supplied
A.Thermostat
B. Immersion heater
Specify optional components at time of order
A. Header tank
B. Ball valve
C.Float
D. Overheat thermostat
E. Solid fuel tappings
F. Scale inhibitor
17 18
1
Torrent ECO SP
4
3
2
5
6
7
8
11
9
10
13
12
15
14
16 17
Typical arrangement of tappings shown on the appliance, including optional
extras, but these can be adjusted to suit specific installation requirements.
The feed and expansion tank must be sized to take the water expansion of the
whole system (i.e. solid fuel boiler, open vented boiler and auxiliary heating).
SYSTEM DESIGN
Available Components and Tappings
1. Open vent - 22mm comp
2. Overheat stat - 1/2” female
3. Plate heat exchanger flow - 22mm
4. Domestic hot water store sensor
5. Immersion heater
6. Solid fuel flow - 28mm comp
7. Hot water supply - 22mm comp
8. OV boiler flow - 22mm comp (350/450 - 28mm comp)
9. Central heating flow - 22mm comp
10. Limit stat - 1/2” female
11. Cold mains supply - 22mm comp
12. Cold feed - 22mm comp
13. Immersion heater
14. Plate heat exchanger return - 22mm
15. Central heating return - 22mm comp
16. OV boiler return - 22mm comp (350/450 - 28mm comp)
17. Solid fuel return - 28mm comp
18. Drain - 1/2” female
Page 10
Available Components and Tappings
1. Open vent - 22mm comp
2. Overheat stat - 1/2” female
3. Plate heat exchanger flow - 22mm
4. Domestic hot water store sensor
5. Solid fuel flow - 28mm comp
6. Hot water supply - 22mm comp
7. Auxilliary heating flow - 22mm comp
8. Immersion heater
9. Limit stat - 1/2” female
10. SP coil flow - 22mm comp (250/350 - 28mm comp)
11. Cold mains supply - 22mm comp
12. Cold feed - 22mm comp
13. SP coil return - 22mm comp (250/350 - 28mm comp)
14. Plate heat exchanger return - 22mm
15. Auxilliary heating return - 22mm comp
16. Solid fuel return - 28mm comp
17. Drain - 1/2” female
Component kit supplied
A.Thermostat
B. Immersion heater
Specify optional components at time of order
A. Header tank
B. Ball valve
C.Float
D. Overheat thermostat
E. Solid fuel tappings
F. Auxilliary heating tappings
G. Scale inhibitor
DESIGN
1
Torrent ECO SOL
4
3
2
5
7
8
6
10
9
11
12
17
14
13
15
16
18
20
19
21
22
23 24
Typical arrangement of tappings shown on the appliance, including optional
extras, but these can be adjusted to suit specific installation requirements.
The feed and expansion tank must be sized to take the water expansion of the
whole system (i.e. solid fuel boiler, open vented boiler and auxiliary heating).
Please note there are 2 optional solid fuel return positions on the solar range to enable
the whole store water volume to be used to store heat when the solar contribution
is negligible.
Available Components and Tappings
1. Open vent - 22mm comp (450 - 28mm comp)
2. Overheat stat - 1/2” female
3. Plate heat exchanger flow - 22mm
4. Domestic hot water store sensor
5. Solar sensor
6. Solid fuel flow - 28mm comp
7. OV boiler flow - 22mm comp (350/450 - 28mm comp
8. Central heating flow - 22mm comp
9. Limit stat - 1/2” female
10. SP coil flow - 28mm comp (210 - 22mm comp)
11. Hot water supply - 22mm comp
12. SP coil return - 28mm comp (210 - 22mm comp)
13. Central heating return - 22mm comp
14. Immersion heater
15. OV boiler return - 22mm comp (350/450 - 28mm comp
16. Solid fuel return - 28mm comp
17. Cold mains supply - 22mm comp
18. Solar coil flow - 22mm comp (450 - 28mm comp)
19. Cold feed - 22mm comp
20. Solar sensor
21. Solar coil return - 22mm comp (450 - 28mm comp)
22. Plate heat exchanger return - 22mm
23. Solid fuel return 2 - 28mm comp
24. Drain - 1/2” female
Component kit supplied
A.Thermostat
B. Immersion heater
Specify optional components at time of order
A. Header tank
B. Ball valve
C.Float
D. Overheat thermostat
E. Solid fuel tappings
F. Sealed primary boiler coil
G. Scale inhibitor
For example, a solid fuel boiler that is used for space heating would be used in the
winter months when the solar contribution is small. Connecting it to the lower return
enables the store to hold more heat when the solar contribution is negligible.
Alternatively an Aga which runs 24 hours 365 days a year would need to be connected
to the upper return when the solar contribution is greatest and the lower when the
solar contribution is least. This allows the solar to make a contribution to the store even
though the Aga is running 24 hours a day. A manual 3-port diverter valve may be used
to switch from summer to winter mode or more sophisticated control methods used.
The controls should be fitted to maximise useful energy gain: minimise loss of useful
energy and ensure that back-up heat sources are not used when adequate grade solar
contribution is available. For precise guidance please refer to “table 37 section 6.0a
System controls” of the “Domestic building compliance guide 2010”.
Page 11
SYSTEM DESIGN
DESIGN
Torrent ECO HP
1
2
4
3
6
5
9
7
8
11
12
10
13
14
15
16
20
17 18
19
Available Components and Tappings
1. Open vent - 22mm comp (450 - 28mm comp)
2. Store overheat - 1/2” female
3. Plate heat exchanger flow - 22mm
4. Domestic hot water store sensor
5. Hot water supply - 22mm comp
6. Solid fuel flow - 28mm comp
7. Heat pump cylinder sensor
8. Limit stat - 1/2” female
9. Cold mains supply - 22mm comp
10. DHW backup immersion heater
11. Heat pump flow - 28mm comp (350/450 1.25 Fem)
12. Central heating flow - 22mm comp
13. Domestic hot water store sensor
14. Cold feed - 22mm comp
15. CH boost immersion heater
16. Central heating return - 22mm comp
17. Heat pump return sensor
18. Heat pump return - 28mm comp (350/450 1.25 Fem)
19. Solid fuel return - 28mm comp
20. Plate heat exchanger return - 22mm
21. Drain - 1/2” female
Component kit supplied
A.Thermostat
B. Immersion heater
Specify optional components at time of order
A. Header tank
B. Ball valve
C.Float
D. Overheat thermostat
E. Solid fuel tappings
F. Scale inhibitor
21
Torrent ECO HP SOL
1
2
4
3
5
6
7
8
12
13
15
16
9
10
11
20
14
18
17
19
21
22
23
25
24
Available Components and Tappings
1. Open vent - 22mm comp (450 - 28mm comp)
2. Overheat stat - 1/2” female
3. Plate heat exchanger flow - 22mm
4. Domestic hot water store sensor
5. Solar sensor
6. Solid fuel flow - 28mm comp
7. Heat pump cylinder sensor
8. Limit stat - 1/2” female
9. Hot water supply - 22mm comp
10. DHW backup immersion heater
11. Heat pump flow sensor
12. Heat pump flow - 28mm comp (350/450 1.25 Fem)
13. Central heating flow - 22mm comp
14. CH boost immersion heater
15. Central heating return - 22mm comp
16. Heat pump return sensor
17. Heat pump return - 28mm comp (350/450 1.25 Fem)
18. Solid fuel return - 28mm comp
19. Solar coil flow - 22mm comp (450 - 28mm comp)
20. Cold mains supply - 22mm comp
21. Solar sensor
22. Cold feed - 22mm comp
23. Solar coil return - 22mm comp (450 - 28mm comp)
24. Solid fuel return - 28mm comp
25. Plate heat exchanger return - 22mm
26. Drain - 1/2” female
Component kit supplied
A.Thermostat
B. Immersion heater
26
Specify optional components at time of order
Typical arrangement of tappings shown on the appliance, including optional
extras, but these can be adjusted to suit specific installation requirements.
The feed and expansion tank must be sized to take the water expansion of the
whole system (i.e. solid fuel boiler, open vented boiler and auxiliary heating).
SYSTEM DESIGN
Page 12
A. Header tank
B. Ball valve
C.Float
D. Overheat thermostat
E. Solid fuel tappings
F. Scale inhibitor
DESIGN
General
Heat Pump Sizing
• All Torrent ECO HP models covered by this manual, are only suitable for open
vented primary (heat pump and space heating) circuits. Therefore the pressure
in the primary circuit depends upon the height of the feed and expansion cistern
and could be as low as 0.20 bar. Therefore ensure that the heat pump selected
will operate at primary circuit pressures e.g. it is not fitted with a non-adjustable
low system pressure switch.
• The efficiency (i.e. coefficient of performance,
COP) of an air source heat pump and hence
its heat output generally decreases as
the ambient air temperature decreases.
Therefore, this factor should be taken into
account when sizing and selecting the heat
pump.
• The heat pumps normally operate at lower temperature difference (5-10°C)
between flow and return than that for a gas boilers (10-20°C) resulting in higher flow
rates in the heat pump primary circuit. Therefore it is important that the primary
pipework connecting the heat pump to the thermal store and the circulating pump
are sized to achieve flow rates recommended by the heat pump manufacturer.
• The efficiency (i.e. coefficient of performance, COP) of a heat pump depends
upon the primary flow and return temperatures and it is generally higher at lower
primary circuit temperatures. Also the heat pumps normally operate at lower flow
temperatures; typically 45-55°C compared with 75-80°C for gas boilers. Therefore if
traditional radiators are used then, these should be oversized in accordance with
the heat pump manufacturers recommendations.
• For optimum operational efficiency and hence lower running costs, a low temperature
space heating (e.g. under-floor heating) system should be used where feasible.
• The design space heating load of a dwelling
should be calculated in accordance with
BS EN 12831 and/or the CIBSE guide. The
allowance for domestic hot water heating
(shown in table below), depends upon
the operating mode. For example, if the
system is designed to operate with priority
for domestic hot water, then no additional
allowance for hot water is required for sizing
the heat pump.
Allowance for Domestic Hot Water
Heating
Torrent
Model
Hot water performance of TEC210HP at 15 - 17 l/min draw off rate
Hot Water
Priority
Mode
Flow Share
Mode
180 HP-SOL
0kW
1.5kW
180 HP
210 HP-SOL
0kW
2.5kW
210 HP
250 HP-SOL
0kW
3.0kW
250 HP
300 HP-SOL
0kW
3.5kW
350 HP
450 HP-SOL
0kW
4.0kW
450 HP-SOL
0kW
5.0kW
60
Hot water temperature °C
50
40
30
20
200
187.5
175
162.5
150
137.5
125
112.5
100
87.5
75
62.5
50
37.5
25
12.5
0
0
10
Allowance for Domestic
Hot Water
Draw-off volume (litres)
HW Outlet(75) (°C)
HW Outlet (65) (°C)
HW Outlet (55) (°C)
AVG CW Inlet Temp (°C)
The draw off volume figures shown above are for the TEC210 HP store. These are
increased accordingly as the cylinder capacity increases. The graph illustrates the
increase in volume that can be achieved by the use of the auxiliary heat source.
A 15 - 17 litre/min flow restrictor is fitted to the Torrent ECO HP hot water supply
outlet on commissioning. Check that the hot water flow does not exceed 17 litre/min.
Particular attention needs to be paid to the product size selection. If the
intention is for the majority of the hot water to be provided by the heat
pump with minimal use of the auxiliary immersion element then it may
be necessary to choose a larger store.
Page 13
SYSTEM DESIGN
INSTALLATION
Model Selection
Torrent ECO OV Model Selection Guide
Max hot water demand
Bedrooms
Model
1 bathroom
1-2
TEC140-OV
1 bathroom + en-suite shower
2-4
TEC170-OV
2 bathrooms + en-suite shower
3-4
TEC210-OV
2 bathrooms + 2 en-suite showers
3-5
TEC250-OV
3 bathrooms + 2 en-suite showers
3-5
TEC350-OV
Torrent ECO SP Model Selection Guide
Max hot water demand
Bedrooms
Model
1 bathroom
1-2
TEC140-SP
1 bathroom + en-suite shower
2-4
TEC170-SP
2 bathrooms + en-suite shower
3-4
TEC210-SP
2 bathrooms + 2 en-suite showers
3-5
TEC250-SP
3 bathrooms + 2 en-suite showers
3-5
TEC350-SP
The suggested model sizes shown in the tables
opposite are based on a typical daily hot water
usage and on the assumptions that the heating
system is correctly sized and that the thermal
store is fully charged to at least 75°C by the main
heat source.
When selecting a solar model, it is important
to check the dedicated solar volume (shown in
table on pages 6-7) complies with the Building
Regulations ADL1 Domestic Building Services
Compliance Guide.
The suggested model sizes are based on
typical hot water usage. For high specification
dwellings an increase of one model size should
be considered.
General Design Considerations
As a general rule, the cupboard footprint needs
to be a minimum of 150mm wider, 80mm deeper
and 80mm taller than the unit selected.
Torrent ECO SOL Model Selection Guide
Max hot water demand
Max solar
collector
area (m2)
Bedrooms
Model
1 bathroom + en-suite shower
2.47
2-4
TEC210-SOL
2 bathrooms + en-suite shower
2.91
2-4
TEC250-SOL
2 bathrooms + 2 en-suite showers
4.03
3-5
TEC350-SOL
3 bathrooms + 2 en-suite showers
5.19
4-6
TEC450-SOL
Torrent ECO HP Model Selection Guide
Max hot water demand
Bedrooms
Model
1 bathroom + en-suite shower
2-3
TEC170-HP
1 bathroom + 2 en-suite showers
2-3
TEC210-HP
2 bathrooms + en-suite shower
3-4
TEC250-HP
2 bathrooms + 2 en-suite showers
3-4
TEC350-HP
3 bathrooms + 2 en-suite showers
4-5
TEC450-HP
Torrent ECO HP-SOL Model Selection Guide
Max hot water demand
Max solar
collector
area (m2)
Bedrooms
Model
1 bathroom + en-suite shower
2.47
2-3
TEC210-HPSOL
1 bathroom + 2 en-suite showers
2.91
2-3
TEC250-HPSOL
2 bathrooms + 1 en-suite shower
4.03
3-4
TEC350-HPSOL
2 bathrooms + 2 en-suite showers
5.19
3-4
TEC450-HPSOL
INSTALLATION
Page 14
The base chosen for the Torrent should be level and
capable of supporting the weight of the unit when
full of water as shown in General Data.
General Restrictions
a. 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.
b. Torrent should not be used where steam is
the primary heating medium.
INSTALLATION
Mains Water Supply
Taps and Shower Fittings
A typical arrangement of the hot and cold water system is shown below. All Torrent
models are designed to be fed directly from the mains and they fulfil the requirements
of WRAS Schedule 2 (paragraph 15.2), and therefore do not require a check valve to
be fitted to the cold water supply pipe.
Aerated taps are recommended to prevent
splashing.
The performance of the Torrent is directly related to the cold water supply pressure and
volume to the dwelling. This must be capable of providing for all those services which
could be required simultaneously and the maximum demand should be calculated
for sizing the distribution network.
As a general guideline, although a 15mm external service may be sufficient for the
smaller dwelling with one bathroom, a 22mm service is preferred (25mm MDPE) and
should be the minimum for larger dwellings.
The Torrent will operate at dynamic pressure as low as 1.5 bar (at the appliance) which
must be available when the local demand is at its maximum, but the preferred range
is between 2 and 3.0 bar.
If the incoming static mains pressure exceeds 5.0 bar at any point in the 24 hour cycle,
then a pressure limiting valve set at 3.0 bar should be fitted downstream of the stop
tap where the cold supply enters the dwelling.
If a water meter is fitted in the service pipe, it should have nominal rating to match
the anticipated maximum simultaneous hot and coldwater demand, calculated in
accordance with BS EN 8558:2011. This could be up to 50 l/min in some properties.
The sanitary water equipment used in the system should be suitable for a working
pressure of 10 bar and the units must be fitted strictly in accordance with the
requirements of the Water Supply (Water Fittings) Regulations 1999.
All types of shower mixing valves can be used
as long as both 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 the mixed water outlet
such as showers. For this reason and because
thermostatic showers are now no more
expensive than manual showers, we strongly
recommend thermostatic showers with Torrent.
The shower head provided must also be suitable
for mains pressure supplies.
The hot water supply to a shower-mixing
valve should be fed where practical directly
from the Torrent or be the first draw-off point
on the hot circuit. The cold water supply to a
shower-mixing valve should where practical
be fed directly from the rising mains via an
independent branch.
The shower must incorporate or be fitted with
the necessary check valves to prevent backsyphonage protection in accordance with Water
Regulations.
The supply of hot and cold mains water directly
to the bidet is permitted provided that it is of
the over-rim flushing type and that type ‘A’ air
gap is incorporated.
BS1212
Ballvalve
Scale inhibitor
(where necessary)
Second dwelling
W.C.
Sink
H.B.
Bath
TYPICAL HOT AND COLD DISTRIBUTION
Supply
pipe
Check valve NOT REQUIRED unless scale inhibitor is a chemical type.
In any event, do not fit a check valve down stream of this point (see 5.1.9)
Check valve NOT REQUIRED unless
supply
pipe services more than one dwelling
Pressure limiting valve
(Not required unless mains pressure is greater than 5 bar)
Hot and Cold Distribution Pipe Arrangement - All Models
Page 15
INSTALLATION
INSTALLATION
Pipe Layout
In all mains pressure installations it is important to remember that the incoming cold
supply must be shared between all terminal fittings. It is important that a 22mm supply
is brought to the appliance and a 22mm take-off is continued at least to the bath. If
there are two baths, 28mm pipework should be considered. One metre of smaller
diameter pipework, or flow restrictors, should be provided on the final connection to
all outlets so as to balance the water available. In any event the distribution pipework
should generally be in accordance with BS EN 806:3.
Plastic Pipework
All the recommendations with regard to the heating systems in this manual are
generally based on BS/EN Standards copper pipework and fittings. However plastic
pipework system can be used in place of copper as long as:a. The chosen system is recommended for use in domestic heating systems by the
manufacturers and it is installed fully in accordance with their recommendations.
b. The design criterion of the plastic system is at least equivalent to the use of BS/EN
Standards copper pipework and fittings.
a. The hardness of the mains water should be
checked by the installer and if necessary a
suitable in-line scale inhibitor device should
specified for hardness levels between 200
and 300ppm (mg/l).
b. Where the hardness level is 300ppm (mg/l) and
above, the optional phosphate type inhibitor
should be specified and fitted at a suitable
point in the cold water supply to the appliance.
It is important that where the supply to the
Torrent is in 22mm the in-line scale inhibitor
is also 22mm. In practice servicing is not
normally required but in hard water areas, the
requirements can be considered similar to those
needed for instantaneous or ‘combi’ appliances.
The installation of scale inhibitor should be in
accordance with the manufacturers instructions
and Water Byelaws.
c. Barrier pipework for these systems is recommended.
Ball Valve and Overflow
The feed and expansion tank can be filled manually if required e.g. using a hose pipe
fitted with a double check valve.
In this situation an overflow pipe can still be fitted if required to ensure that if a leak occurs
on the plate heat exchanger it can be discharged safely to the outside of the building.
Note: If a ball valve is fitted, then a warning/overflow pipe must always be fitted.
The feed and expansion tank (provided by the installer) must be sized correctly to
enable the expansion of the entire system volume. This will include the central heating,
store, solid fuel and boiler circuit volumes.
See page 14 for guidance sizing the feed and expansion tank.
Water Treatment
In all Torrent models, the primary (i.e. non-potable) water is stored and the domestic
hot water is heated instantaneously by means of heat exchangers. Therefore treating
the primary water will not contaminate the domestic hot water supply.
Although the Torrent primary store has no special water treatment requirements, the
radiators and other parts of the circuit will require the application of a scale and corrosion
inhibitor. The volumes and concentration should be calculated in accordance with the
manufacturers instructions and when calculating the system volume (i.e. the water
content), the volume of the Torrent should be taken into account.
Use In Hard Water Areas And Scale Protection
The patented design of the domestic hot water plate heat exchanger is such that
the turbulence through the plates slows down the formation of scale in moderate
hard water conditions. However, the requirements set out in the ‘Domestic Building
Services Compliance Guide’ and the Building Regulations approved documents L1A
and L1B regarding scale protection should be complied with.
These requirements state that; “where the mains water hardness exceeds 200ppm
provision should be made to treat the feed water to the water heaters and the hot
INSTALLATION
water circuit of combination boilers to reduce
the rate of accumulation of scale”. To comply
with this requirement: -
Page 16
London Loop
As the thermal store gets hot the water will
expand and the water level in the R&E tank
will rise, as will the level of water in the vent
pipe. Hot water will also rise to the top of the
cylinder. When the water at the base of the
cylinder becomes hotter it may run out the cold
feed connection pipe. If the cold feed pipe then
runs vertically it works like chimney with the hot
water rising to the top in the same way hot air
does from a fire. If this section is not insulated
then it will lose heat and waste energy.
If, however, the cold feed is formed into a
sheppard’s crook or london loop it will form a
thermal trap. A thermal trap works by ensuring
that cold water is held below hot water. Because
hot water always rises it will not be able to
move down and around the loop/crook and
therefore will not rise up the cold feed pipe
work. This will reduce heat loss and thereby
prevent energy waste.
The minimum depth of the U trap is calculated by
multiplying the pipe diameter by 8. For example;
• Using 22mm pipework will require a
minimum of 176mm
22mm pipework is highly recommended to
ensure that the London loop does not air lock
during the commissioning process. It also
enables a faster installation of the product due
to the increased filling rate.
INSTALLATION
Wiring The Control Panel
The control panel requires a separate 3 amp fuse spur double pole to ensure safe
isolation. The cable/flex from the fuse spur to the control panel must be a minimum
of 0.75mm2 C.S.A. and be heat resistant. The cable should be clipped to prevent
accidental snagging.
The control panel front cover is secured by 4 black screws. Remove these and lift off
the front cover to expose the power terminals. These are found at the bottom left of
the control panel. Prepare the cable end and feed it through the cable gland.
Use a screwdriver to press the neutral cross down on the WAGO connector. This opens
the clamp and the neutral wire can be fed into the connector. Remove the screwdriver
and test the wire is securely fit. Repeat with the PE and live cables. Tighten the cable
gland and check for security. Perform the necessary safety checks and refit the front
panel.
GND GND
IN
OUT
T1
T2
2 4
1 3
2 4
1 3
1 2 3
4 5 6
J19
12
11
10
9
8
2
1
TS sensor
2
1
CW sensor
All the these sensor inputs carry a
Voltage of 5V.
The max cable length is 1 meter.
The sensors connected to the control
Should be free from the appliance earth
6
7
8
9
10
J18
J3
J7
8 7 6 5
4 3 2 1
2
1
1
2
3
4
5
Fuse
Immersion Heaters
These are 3kW
230V AC heaters
and incorporate
a thermostat.
The thermostat
incorporating
a ‘s i n g l e s h o t ’
overheat energy
cut out which
Immersion Heater Wiring
means it cannot
be reset and must be replaced if it has operated.
They have incalloy elements to prolong their
life expectancy in aggressive water conditions.
Thermostat
Dip
Switch
1234
The correct method of connecting the wiring to
the immersion heater is shown here.
N - Blue
PR61
PWM +
PWM SPARE
E – G/Y
L - Brown
Utilising Off Peak Electricity
Secondary Hot Water Circulation
If the length of the hot water draw-off pipework is excessive and the delivery time
will be more than 60 seconds before hot water is available at the tap, you may wish to
consider using trace heating to the hot water pipework such as the Raychem HWAT
system. Also a conventional pumped secondary circulation system (shown below)
can be used with any model of the Torrent.
Hot water outlets
Flow switch
Torrent ECO
Secondary circulation pipework must be
insulated to prevent energy loss in both heated
and unheated areas.
N
J8
To
DHW
pipe
If secondary circulation is used, there is a
possibility that excessively hot temperatures
may be experienced in the hot water supply
pipework due to the blending valve not being
able to mix with cold water because the water
is always supplied hot. A pipe thermostat is
incorporated in the circuitry which cuts the
supply to the pump when the water in the
return pipe reaches the set temperature of the
blending valve.
E
L
J20
7 14
6 13
5
4
3
2
1
J1
Combined flow
and
HW temperature
sensor
from any heating from the hot water pipework
to ensure that the water remains cold and of
drinking water quality.
Plate heat exchanger
Pipework length and
diameter to suit
property demands
Pump isolation
valves
Single check
valve
Cold water inlet
Single
check
valve
Secondary
circulation
pump
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.
Cold water sensor
Inline filter &
flow regulator
Where it is intended that units are fitted to offpeak
circuits, then suitable controllers such as the
Horstmann off peak electric time controller will
be required. External wiring to the immersion
heaters must be in accordance with the relevant
IEE Wiring Regulations and the circuit must be
protected by a suitable fuse and a double pole
isolating switch.
Pipework length and
diameter to suit
recirculation flow rate
approx 1-2 l/min
Potable water
expansion vessel
It is important that the cold water pipework is adequately separated and protected
Page 17
Important
The unit must not be powered up unless the
thermal store has been filled with water, the
pump has been bled and water is confirmed
INSTALLATION
INSTALLATION
Boiler Size
Allowance for domestic hot water for sizing the boiler
Allowance for domestic
hot water heating (kW)
Torrent model
Full divert mode
Flow share mode
140
0
2
170
0
3
210
0
3.5
280
0
4.5
350
0
6.0
450
0
8.0
Expansion Vessel For Sealed Heating System
Expansion Vessel Requirements
Safety valve setting
3.0
Vessel charge
pressure (bar)
Initial system charge
pressure (bar)
0.5
0.5
1.0
Total System
Volume (litres)
1.0
1.5
2.0
1.0
1.5
1.5
2.0
1.5
2.0
Expansion Vessel Volume (litres)
25
2.1
3.5
6.5
13.7
2.7
4.7
10.3
3.9
8.3
50
4.2
7.0
12.9
27.5
5.4
9.5
20.6
7.8
16.5
75
6.3
10.5
19.4
41.3
8.2
14.2
30.9
11.7
24.8
100
8.4
14.0
25.9
55.1
10.9
19.0
41.2
15.6
33.1
125
10.4
17.5
32.4
68.3
13.6
23.7
51.5
19.5
41.3
150
12.5
21.0
38.8
82.6
16.3
28.5
61.8
23.4
49.6
Thermal Store
Potential
Expansion of
Water in Store
(litres)
Minimum Number of Feed and
Expansion Tanks
(16 litre model inc. 10 litre expansion)
TEC140
OV model - 6.6
SP model - 6.6
1
TEC170
OV model - 7.0
SP model - 7.0
1
TEC210
OV model - 9.6
SP model - 9.5
SOL model - 8.0
1
TEC250
OV model - 10.6
SP model - 10.1
SOL model - 11.1
2
TEC350
OV model - 16.5
SP model - 16.3
SOL model - 16.4
2
TEC450
SOL model - 21
3
The table opposite can be used for sizing the
heating system expansion vessel. The water
content of the Torrent primary heat exchanger
is listed in specification tables on pages 6
and 7 and a figure of 4.5 l/kW of installed
radiator capacity can be used for a preliminary
assessment of the water content of the heating
system.
The expansion vessel requirements shown in
the table are based on a maximum boiler flow
temperature of 93°C. The expansion vessel
must be suitable to accommodate the change
in volume of water in the heating system when
heated from 10°C to 100°C, with a maximum
operating temperature of 99°C.
Feed And Expansion Tank For Open Vented
Heating System
The potential expansion of all the thermal stores
in the range is shown in the table opposite,
alongside the capacity for expansion, in our
standard F & E tank, which can be supplied as
an optional extra.
Expansion for all other open vented systems
connected to the store must be added to this
figure. So, as a preliminary assessment of the
water content of the attached open vented
systems, a figure of 4.5 l/kW of radiator output
can be used. For example, 20 kW radiator output
would have a system volume of 90 litres, and
potential expansion of this would be 3.6 litres,
and 10 kW would be 45 litres total volume and
1.8 litres for expansion.
Expansion of all connected open vented systems must be added to the store
expansion when choosing the size of the feed and expansion tank.
The weight of each tank when full is 27kg (not including pipework and valves).
INSTALLATION
The minimum total boiler power required is the
sum of the power required for space heating
which should be calculated in accordance with
BS EN 12831 and/or the CIBSE guide and the
power required for producing hot water which
can be read from the table to the left.
Page 18
Please refer to page 26 for further information
regarding F&E tanks when using solid fuel input.
INSTALLATION
Open vented heating systems
2 Pump System
Min. 250mm
Max.
height
10m
The open vented primary system is filled via the
feed and expansion (F&E) tank fitted with the
Torrent OV model and therefore it is important that
the F&E tank is positioned at least 250mm above
the highest point in the system. Please check
the F&E tank is big enough for the whole system
expansion. Also ensure that the height of the
F&E tank is sufficient to meet the manufacturer’s
requirements for the minimum head required for
the boiler and the system pump(s).
The Torrent OV models can be installed using
both ‘Y’ Plan and ‘S’ Plan heating system controls.
These models can also be installed without either
3-port or 2-port valves using a separate central
heating pump as shown in diagrams on this
page. In this case no bypass valve is required
unless TRV’s are used on all radiators.
If the flow and return pipes between the boiler
and the Torrent OV thermal store are dipped
as illustrated in the schematic shown opposite,
then the boiler selected must be suitable for a
sealed heating system i.e. it must be fitted with
an overheat thermostat. Automatic air vents
should be fitted at appropriate places to vent
the system and a pressure relief valve should
also be fitted close to the boiler.
2 Pump System With Dipped Boiler Flow and Return Pipe
Min. 250mm
Any boiler can be used with the Torrent OV and
the Torrent SOL provided the flow pipe from the
boiler to the Torrent is continuously rising. The
flow pipe between the boiler and the Torrent
thermal store is part of the open vent and
therefore it must not be fitted with any isolating
valve, non-return valve or any other component
which can obstruct the flow.
The minimum size of flow and return pipe
between the boiler and the Torrent should be
22mm copper or equivalent. In any case it should
be sized to suit the installed boiler capacity,
available pump head and the circuit resistance.
Must comply
with boiler
manufacturer
instructions
The water level must be set correctly by adjusting
the ball valve in the F&E tank. The overflow/
warning pipe, should be no less than the 20mm
internal diameter and have a continuous fall.
The overflow/warning pipe should be fitted to
discharge clear of the building and be sited so
that any overflow can be easily observed. The
warning pipe should be installed in either high
temperature uPVC or copper and should not
have any other connections to it.
If the boiler does not incorporate an overheat
thermostat, then one should be fitted to the store.
Page 19
TORRENT ECO OV
INSTALLATION
S Plan Open Vented Heating System
Auxiliary
central heating
Min. 250mm
The two diagrams shown on this page show
how an ‘S’ plan and ‘Y’ plan may be used in
conjunction with the Torrent ECO OV, with
another space heating supply being taken
direct from the store. The type of space heating
used is the installer’s choice and the diagrams
only show possible layouts.
The auto bypass is positioned here to allow
minimum flow rates through the boiler as
TRVs close; and to allow for boilers with pump
overrun.
Max.
height
10m
Off delay timers may be considered for use
in situations where the boiler pump overrun
is controlled by sensing a temperature drop
before shutting off. This type of boiler may
cause the pump to run on for some minutes
while the temperature slowly drops, but the
store temperature may also drop causing the
boiler to fire again; the boiler then short cycles.
If an off delay timer is used it allows the pump
to overrun for about a minute to remove any
excess heat; then shuts off the pump, but it does
not remove so much of the heat from the store
that it causes the boiler to fire again.
A solid fuel boiler is also able to be connected
to the Torrent ECO OV, please refer to page 20
for further information.
Y Plan Open Vented Heating System
Auxiliary
central heating
Min. 250mm
Max.
height
10m
TORRENT ECO OV
Page 20
INSTALLATION
S Plan Sealed Main Heating System
Sealed heating system
All Torrent SP models are suitable for sealed
heating systems up to 3.5 bar maximum
operating pressure, however the normal
pressure relief valve setting is 3.0 bar. The typical
layout of the open vented ‘Y Plan’ and ‘S Plan’
for the indirect Torrent models is shown in the
diagrams on this page.
Min.
250mm
Auxiliary
heating
Max.
height
10m
A boiler used in a sealed heating system must
be suitable for this application i.e. it must be
fitted with an overheat cut-out thermostat
and can be located above the thermal store
F&E tank, as can the central heating system
connected to the boiler.
It is recommended that the F&E tank (for the
thermal store) is fitted at a high level in the
same cupboard as the Torrent. However it can
be fitted remotely up to 10m above the base
of the Torrent, and sized to accomodate the
expansion of the cylinder and any attached
central heating and solid fuel volumes.
Sealed
system kit
The F&E tank overflow/warning pipe should
be installed in a material suitable for a heating
system feed and expansion tank.
Y Plan Sealed Main Heating System
Min.
250mm
There shall be no permanent connection to
the mains water supply for filling the heating
system even through a non-return valve
without the approval of the Local Water
Authority. An approved filling loop is required
for filling the heating system, which should be
disconnected after commissioning the system.
The filling loop should be located adjacent
to the boiler along with a suitable expansion
vessel, pressure gauge, pressure relief valve and
discharge arrangement.
Auxiliary
heating
Max.
height
10m
The minimum system pressure should not be
less than the static head plus 0.5 bar i.e. the
height of the highest point in the system above
the expansion vessel plus a margin of 0.5 bar.
A solid fuel boiler is also able to be connected
to the Torrent ECO SP, please refer to page 20
for further information.
Where a sealed primary coil is used, the thermal
store is a hot water only thermal store. If too
much heat is taken out of store, then hot water
performance will be limited. The hot water priority
should be protected by use of an appropriate
thermostat. Heating can be taken from the SP
thermal store to provide auxilliary heating to
towel radiators, which are low output. It is not
suitable for full central heating systems, this
should be taken directly from the boiler.
Sealed
system kit
Page 21
TORRENT ECO SP
INSTALLATION
Torrent Green HP Models
HP Model With Central Heating From Heat Pump
Min. 250mm
The Torrent ECO HP models are all open vented
and are designed to be heated directly by an
air or a ground source heat pump which does
not require a minimum pressure in the primary
circuit for operation. The space heating can be
supplied directly from the heat pump circuit or
from the thermal store.
The selection between the two options will
depend upon the operating characteristics of
the heat pump, type of heating system and
control strategy. For general guidance: -
3-port
diverter
valve
• If the heat pump requires a buffer for
operation; for example to reduce rapid
cycling etc, then the system would benefit
if the heating system is supplied from the
thermal store. In this configuration, the
operation of the heat pump is only controlled
by the store thermostat(s).
• A hybrid system arrangement can also
be used (not shown). For example; a low
temperature weather compensated heating
circuit e.g. under floor heating can be
supplied directly from the heat pump circuit
and constant temperature e.g. towel rails
can be supplied from the thermal store.
PRV
A typical wiring arrangement for a system in
which the space heating is supplied from a
Torrent ECO HP is shown on page 34 and a
typical wiring arrangement for a system in
which the space heating is supplied from a heat
pump circuit is shown on page 35.
HP Model With Central Heating From Thermal Store
Min. 250mm
On page 34, the control of heat pump is shown
with top and bottom thermostats to enhance the
performance of the heat pump by decreasing the
frequency of cycling. The heat pump is switched
on when both top and bottom thermostats are
calling for heat and is switched off when both
thermostats stop calling for heat. A two channel
programmer suitable for gravity hot water
system should be used with this arrangement.
On page 35, the generic wiring arrangement
is shown with a 3-port diverter valve with hot
water priority. If a 3-port flow share valve is used,
then the controls should be wired to provide
priority for hot water because the space heating
and the hot water heating may be operating at
different flow temperatures.
PRV
TORRENT ECO HP
Technological advancement of heat pump
control systems is occuring at a fast pace and
the conrol systems supplied with the heat
pump can provide full control of the system. It
is also important to ensure that the minimum
head for the heat pump and the system pump
is as required by the heat pump manufacturer.
Please refer to the heat pump manufacturers
instructions to obtain further information.
Page 22
INSTALLATION
Torrent ECO HP-Solar Models
HP SOL Model With Central Heating From Heat Pump
Solar
controller
Solar pumping station
Pressure Expansion
relief
vessel
Min. 250mm
The heat pump and space heating system
configurations and operation with the Torrent
ECO HP-solar models is the same as for standard
models. The solar thermal system operates
independent of the heat pump system. A
typical generic solar system configuration is
shown for guidance only. The solar system and
the associated controls should be planned and
installed following manufacturers instructions.
All components in the solar primary system
must be marked or identifiable in such a way
that their design pressure and temperature can
be readily determined.
3-port
diverter
valve
A safety device i.e. pressure relief valve to control
the risk of over-pressure in the system components
should be fitted as per solar system manufacturers
instructions. A termination from the pressure
relief valve should minimise the risk of damage
to persons or materials. Suitable locations are a
high temperature receptacle, internal gully or else
externally at ground level. High level termination
from a wall or on a roof could cause injury to
people or animals below if the valve were to release
scalding water and steam.
PRV
The pipe leading to from the safety device to the
collector should be rigid and non-deformable
construction, without any possibility of
restriction, distortion or closure by any other
fitted component.
HP SOL Model With Central Heating From Thermal Store
Solar
controller
A typical wiring diagram for the solar thermal
system for the Torrent ECO HP-solar is shown
on page 35.
Solar pumping station
Pressure Expansion
relief
vessel
Min. 250mm
PRV
To ensure effective operation of the thermal
store it must not be overheated. Therefore
an overheat thermostat or other device must
be fitted to ensure that this does not occur.
Ideally the control thermostat should be set
to a temperature which does not allow the
temperature at the top of the store does not
rise above the low 80s. This means that the
control thermostat may need to be set at 70°C
on some cylinders, due to the temperature
gradient in the store. The actual set point must
set up and checked during commissioning by
the installer. The overheat thermostat should
be set at a temperature which operates before
or at 85°C. If temperatures in store exceed 85°C
then secondary protection will be required in
accordance with Part G3 of Building regulations.
The control packages supplied with the heat
pump can not only control the heat pump but
any backup devices as well, for example, solar
thermal, gas boiler and immersion heater flow
boilers.
Page 23
TORRENT ECO HP SOL
INSTALLATION
S Plan Open Vented Heating System Including Solar Input
Solar
controller
Solar pumping station
Pressure Expansion
relief
vessel
Auxiliary
central
heating
Min. 250mm
Solar heating circuit
The Torrent SOL is an advanced thermal store
and has been designed to incorporate existing
boiler and central heating controls and is based
on the tried and tested standard Torrent range.
Therefore general design requirements for
hot and cold water systems, for ball valve and
overflow, for water treatment and for heating
system design should be taken into account
when designing the Torrent SOL based systems.
The diagram opposite shows the Torrent SOL
type used in a traditional open vented heating
system. The water level in the F&E tank should
be at least 250mm above the highest point of
the heating system e.g. a radiator.
In the open vented system shown opposite,
the thermal store, radiator heating circuit and
the auxilliary heating circuit are all fed from
the same feed and expansion tank. Therefore it
should be sized to accommodate the expansion
of total water content of the complete system
(i.e. water content of the store + water content
of radiator heating circuit + water content of
under-floor heating circuit).
Y Plan Sealed Primary Heating System Including Solar Input
Solar
controller
Solar pumping station
Pressure Expansion
relief
vessel
Auxiliary
central
heating
The diagram opposite shows the sealed
primary ‘SP’ variant of the Torrent SOL used
in a typical sealed heating system. With this
system arrangement, although the boiler and
the radiator central heating circuits are sealed,
both the store and the auxilliary heating circuit
(if installed) are open vented. Therefore the
feed and expansion tank should be sized to
accommodate the expansion of total water
content of the open vented system (i.e. water
content of the store + water content of underfloor heating circuit).
The diagrams also show typical configurations
of a solar thermal system with Torrent SOL,
which will accumulate the energy from more
than one renewable energy sources (e.g. solar,
wood burning stove).
In the open vented system, this energy is
available for hot water and at low level for both
radiator and under-floor (if installed) space
heating circuits. However in the sealed primary
system configuration, this energy is only
available for hot water and at low levels for the
under-floor space heating circuit (if installed).
Sealed
system
kit
TORRENT ECO SOL
Page 24
INSTALLATION
For maximising the use of the renewable ‘green’ energy, the system should be managed
and controlled so that unnecessary firing of the boiler is kept to a minimum. This can be
achieved by a combination of householder use of the system and controls, for example;
Use the store to provide shower or a bath to utilise the heat gained by the system
from the previous day’s solar energy input. Alternatively showering or bathing in the
evening will utilise the energy that has been stored during the day from the solar
system.
• As with any system, hot water and space heating should be programmed according
to house holder requirements. However it is always good to remember that to gain
maximum advantage from the solar panels, the store should be as cool as possible,
prior to expected periods of high solar gain. To achieve this in spring, summer and
autumn, the hot water channel of the boiler should be programmed to come on 30
minutes before the hot water is required in the morning and then programmed off
before volumes of water are drawn off the system. This way the store is depleted
of heat allowing maximum transfer from the solar system during the day.
• However further supplementary time periods for the boiler will be required in
winter when not much solar energy is available.
• Uncontrolled boiler operation can also be reduced by fitting and wiring a pipe
thermostat on the solar return pipe close to the Torrent SOL.
As part of setup and commissioning, it is important that this boiler hold-off pipe
thermostat be adjusted to find the best setting for each individual installation.
Failure to do so will give under performance of either the boiler or the solar heating
system.
To ensure effective operation of the thermal store it must not be overheated. The
overheat thermostat should be set at a temperature which operates before or at
85°C. If temperatures in store exceed 85°C then secondary protection will be required
in accordance with Part G3 of Building regulations. Please see page 23 for further
information.
A solid fuel boiler can also be connected to the Torrent ECO SOL, please refer to page
20 for further information.
Page 25
TORRENT ECO SOL
INSTALLATION
Gravity Flow Solid Fuel Boiler Pipe Layout
Feed and expansion tank sized to include
the expansion of solid fuel boiler, open vented
boiler and open vented central heating
Min. 250mm
Control
stat 2
Heat sink radiator
(ensure lockshields
are left fully open)
Solid
fuel
vent
Normally closed
2 port valve
Normally open
2 port valve
Normally open
2 port valve
Pipe
stat 1
This circuit usually uses gravity circulation.
Good circulation depends on the system height and the
temperature difference between the hot flow and the cool
return to provide the motive force to overcome the frictional
resistance in pipe and fittings and provide circulation.
Multi-fuel stove
Solid Fuel Option
All models of the Torrent ECO shown in this installation manual have the tappings
included as standard for a solid fuel boiler. In the absence of recommendations from
HETAS or the solid fuel boiler manufacturer, we would advise the following pipe layout
to achieve the best performance from your solid fuel system and our thermal store.
This diagram represents a good example of a gravity circulation pipe layout. Points to
note are;
• All pipework rises towards the cylinder and the heat sink radiator and fall back
towards the solid fuel burner.
• The heat source is below the cylinder which gives the layout a good system height.
• All gravity circulation pipework is recommended to be 28mm or above pipe
diameter, at low flow speeds the pipe resistence is negligible in this pipe diameter.
• Avoid long horizontal runs and try to make the ratio horizontal:vertical to be a
maximum of 20:80.
To ensure that the solid fuel boiler does not overheat the thermal store during its
operation and prevent gravity circulation cooling the thermal store when it is not, the
following controls can be used. Other methods of control can be used; HETAS and/or
the solid fuel boiler manufacturers instructions should be consulted. This control system
is fed from a dedicated fuse spur to enable safe isolation for changing components. All
wiring should comply with BS7671 Requirements for Electrical Installations 17th edition.
Typical components (not supplied but available to purchase from Gledhill Spares Ltd);
• Honeywell V4043B1265 (XB165) - 28mm compression normally open 2 port valve
• Honeywell V4043H1106 (XC012) - 28mm compression normally closed 2 port valve
• Honeywell L641B1012 (XC016) - High limit pipe thermostat
• (XC010) - Control thermostat
When the boiler is lit, the water temperature raises. When the temperature is above pipe
thermostat 1 set point, the contacts close signalling the normally closed valve to move
open. Once it is fully open, it signals the normally open valve to motor there by closing
it. The thermal store now receives heat from the solid fuel boiler via gravity circulation.
SOLID FUEL BOILERS
Page 26
If control stat 2 set point is exceeded then
the power to the normally closed valve is cut
which in turn cuts the power to the normally
open valve. Excess heat from the solid fuel
boiler is then circulated around the heat sink
radiator. Careful selection of the pipe thermostat
switching temperatures should be made during
commissioning to get the best performance from
the system. 90°C is the maximum temperature
that the control stat 2 should operate at. If
temperatures in store exceed 85°C then
secondary protection will be required in
accordance with Part G3 of Building regulations.
There are 2 solid fuel returns on the Sol
cylinder range to enable the whole store water
volume to be used to store heat when the solar
contribution is negligible. For example, a solid
fuel boiler that is used for space heating would
only be used in the winter months when the
solar contribution is small. Connecting it to
lower return enables the store to hold more
heat when the sun cannot provide as much.
Alternatively an Aga which runs 24 hours 365 days
a year would need to be connected to the upper
return when the solar contribution is greatest and
the lower when the solar contribution is least. A
pair of simple isolation valves may be used to
switch from summer to winter mode or more
sophisticated control methods used.
To ensure effective operation of the thermal
store it must not be overheated. The overheat
thermostat should be set at a temperature which
operates before or at 85°C. If temperatures in
store exceed 85°C then secondary protection
will be required in accordance with Part G3 of
Building regulations.
Feed and Expansion Tank
A feed and expansion cistern supplying a system
heated by wet solid fuel appliance should either
be of metal construction (copper, stainless
steel etc.) of manufactured of a material
that has been certified as being suitable for
temperatures up to 110°C. These are available
to order from Gledhill at the time of purchase.
The capacity of the cistern should be at least
one twentieth of the total system volume.
The cistern should be fitted with a brass float
operated valve that is manufactured to BS1212
Pt. 2 and is fitted with an appropriately sized
copper float. The overflow pipe should be either
made of metal or manufactured from a material
that has been certified as being suitable for
temperatures up to 110°C. The overflow pipe
must have appropriate support – for plastics
this may require continuous support.
Page 27
on
on
1
2
2
off
off
Pipe Thermostat 1
C
1
L
ML
N
N
N
E
PL
E
SL
1
2
Normally Closed
2 Port Valve
L
Normally Open
2 Port Valve
E
3
1
L
Local 5
double A
pole
isolator
N
Clock
2
1
3
2
4
OFF
3
N
4
6
ON
L
Central
heating
pump
E
5
CH and HW Programmer
Torrent ECO electric only (direct option) and auxiliary heating control system
C
Control Stat 2
7
OFF
ON
9
11
12
3
OFF
Junction
2
ON
OFF
OFF
OFF
4
OFF
ON
OFF
ON
MCB MCB MCB MCB MCB
ON
ON
ON
B16
Hot
Water
Consumer unit
10
1
24 hour domestic supply
[Off-peak during 00:00 – 07:00 E7]
8
E
Room Thermostat
2 Pole Off-peak
Isolator controller
switch
Bottom Off-Peak 3kW
Immersion heater
Top On-Peak 3kW
Immersion heater
INSTALLATION
WIRING DIAGRAMS
INSTALLATION
on
C
off
L
2
1
CH & HW Programmer
Normally Open
2 Port Valve
Control Stat 2
N
Room Thermostat
HW
OFF
E
N
L
HW
ON
CH
OFF
2
1
CH
ON
ON
4
3
E
OFF
2
1
E
4
3
Br
Br
Junction
L
C
1
on
2
off
ML
N
PL
N
SL
E
E
1
2
3
1
Local
double
pole
isolator
2
3
4
Pipe Thermostat 1
L
N
E
Mains supply
230VAC ~ 5 Amp
Torrent ECO with 2 pump heating control system and typical solar heating system
WIRING DIAGRAMS
6
7
8
L
N
pump
9
10
11
12
L
N
E
5
A
L
Normally Closed
2 Port Valve
5
Page 28
N
E
boiler
SL
E
E
N
L
L
N
Boiler wiring terminals
Boiler pump
Central hea
pump
INSTALLATION
PRV
Store stat
ON
OFF
1
C
Solar panels
S1
Solar controller
2
230Vac
50Hz
supply
L N E
Solar
Pump
L
N E
S2
S1
Torrent ECO SOL
Solar
pumping
station
P1
E
S3
SL
E
C
1
on
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95°C
Thermal store temperature
max 85°C, more typically
75-77°C. (If temp exceeds 85°C
then secondary protection
will be required, see page 26)
Installer must set the thermostat
correctly during commissioning.
2
off
E
ating
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95°C
Thermal store temperature
max 85°C, more typically
75-77°C. (If temp exceeds 85°C
then secondary protection
will be required, see page 26)
Installer must set the thermostat
correctly during commissioning.
E
C
NC
Overheat
thermostat
(S3)
S2
S1 : Solar flow temperature sensor
S2 : Solar zone store temperature sensor
S3 : Store overheat temperature sensor/Thermostat
NOTE
Some solar controllers, the overheat protection is provided by a temperature sensor,S3,
which is wired directly to the solar controller same as sensors S1 and S2
In this case the mechanical overheat thermostat (S3) shown in this diagram is not required and
the solar pump is wired straight to the solar controller.
NOTE
As part of system setup and commissioning, it is important that this boiler hold-off pipe thermostat
be adjusted to find the best setting for each individual installation.
Failure to do so will give under performance of either the boiler or the solar heating system
Page 29
WIRING DIAGRAMS
INSTALLATION
on
C
off
L
2
1
CH & HW Programmer
Normally Open
2 Port Valve
Control Stat 2
N
Room Thermostat
HW
OFF
E
N
L
HW
ON
CH
OFF
2
1
CH
ON
ON
4
3
E
OFF
2
1
E
4
3
Br
Br
Junction
L
C
1
on
2
off
ML
N
PL
N
SL
E
E
1
2
3
1
Local
double
pole
isolator
2
3
4
Normally Closed
2 Port Valve
7
8
9
10
11
12
L
N
Torrent ECO with ‘Y’ Plan heating control system and typical solar heating system
Page 30
L
N
Or
an
ge
E
Mains supply
230VAC ~ 5 Amp
WIRING DIAGRAM
6
5
A
L
Pipe Thermostat 1
5
N
E
boiler
SL
L
N
pump
E
E
N
L
E
Bl
N
G/
Y
E
Boiler wiring terminals
System pump
3-P
Flow sh
INSTALLATION
PRV
Store stat
ON
OFF
1
C
Solar panels
S1
Solar controller
2
230Vac
50Hz
supply
L N E
Solar
Pump
L
N E
S2
S1
Torrent ECO SOL
Solar
pumping
station
P1
E
S3
SL
W
hit
Gr
ey
E
C
1
on
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95°C
Thermal store temperature
max 85°C, more typically
75-77°C. (If temp exceeds 85°C
then secondary protection
will be required, see page 26)
Installer must set the thermostat
correctly during commissioning.
2
off
E
Port
hare valve
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95°C
Thermal store temperature
max 85°C, more typically
75-77°C. (If temp exceeds 85°C
then secondary protection
will be required, see page 26)
Installer must set the thermostat
correctly during commissioning.
E
C
NC
Overheat
thermostat
(S3)
S2
S1 : Solar flow temperature sensor
S2 : Solar zone store temperature sensor
S3 : Store overheat temperature sensor/Thermostat
NOTE
Some solar controllers, the overheat protection is provided by a temperature sensor,S3,
which is wired directly to the solar controller same as sensors S1 and S2
In this case the mechanical overheat thermostat (S3) shown in this diagram is not required and
the solar pump is wired straight to the solar controller.
NOTE
As part of system setup and commissioning, it is important that this boiler hold-off pipe thermostat
be adjusted to find the best setting for each individual installation.
Failure to do so will give under performance of either the boiler or the solar heating system
Page 31
WIRING DIAGRAM
INSTALLATION
on
C
off
L
2
1
CH & HW Programmer
Normally Open
2 Port Valve
Control Stat 2
N
Room thermostat
HW
OFF
E
L
N
HW
ON
CH
OFF
2
1
CH
ON
ON
4
3
Br
E
1
S
OFF
2
E
4
3
C
Br
Junction box
L
C
1
on
2
off
Pipe Thermostat 1
ML
N
PL
N
SL
Normally Closed
2 Port Valve
E
E
1
2
3
Local
double
pole
isolator
1
2
3
4
6
7
8
9
10
11
12
5
A
Br
L
L
N
E
Mains supply
230VAC ~ 5 Amp
Torrent ECO with ‘S’ Plan heating system with typical solar heating system
WIRING DIAGRAM
5
Page 32
N
E
boiler
SL
L
N
pump
E
E
N
L
Boiler wiring terminals
System pump
L
Bl
N
G/
Y
E
Or
an
ge
G
e
S1
Central heatin
Zone valve
INSTALLATION
PRV
Store stat
Solar panels
ON
C
S1
OFF
1
2
Solar controller
1
S1
2
S2
3 4
S3
5 6
7 8
E
12 13 14
N R1 N R1 N L
15 16 17 18 19 20
Torrent ECO SOL
S3
Solar
pumping
station
P1
Gr
ey
S2
ng
e
Br
L
Bl
N
G/
Y
E
Or
an
ge
S1
E
Gr
ey
C
1
on
2
off
S2
Hot water heating
Zone valve
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95°C
Thermal store temperature
max 85°C, more typically
75-77°C. (If temp exceeds 85°C
then secondary protection
will be required, see page 26)
Installer must set the thermostat
correctly during commissioning.
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95°C
Thermal store temperature
max 85°C, more typically
75-77°C. (If temp exceeds 85°C
then secondary protection
will be required, see page 26)
Installer must set the thermostat
correctly during commissioning.
S2
S1 : Solar flow temperature sensor
S2 : Solar zone store temperature sensor
S3 : Store overheat temperature sensor/Thermostat
NOTE
With some solar controllers do not have overheat sensor, S3, as shown above
In this case the mechanical overheat thermostat (S3) may used and wired as
shown in figure 4.4 to protect the store from over heating by stopping the solar
Pump at pre-set temperature limit
NOTE
As part of system setup and commissioning, it is important that this boiler hold-off pipe thermostat
be adjusted to find the best setting for each individual installation.
Failure to do so will give under performance of either the boiler or the solar heating system
Page 33
WIRING DIAGRAM
INSTALLATION
Typical schematic wiring diagram for the Torrent ECO HP and Torrent ECO HP-solar
with space heating supplied from thermal store.
WIRING DIAGRAM
Page 34
INSTALLATION
Typical schematic wiring diagram for the Torrent ECO HP and Torrent ECO HP-solar
with space heating supplied directly from the heat pump circuit.
Page 35
WIRING DIAGRAM
INSTALLATION
Typical schematic wiring diagram and system configuration for the Torrent ECO HP-solar.
WIRING DIAGRAM
Page 36
INSTALLATION
Boost Immersion Heater
Control By Programmer
All Torrent ECO HP models are fitted with a 3kW immersion heater so that the store can be
heated to a temperature above the heat pump delivery temperature to increase the hot
water performance of the unit if necessary. Because the TorrentHP is a primary thermal
store it is not necessary to heat the store above 60°C for hygienic protection against
growth of ‘legionella’. This is because the domestic hot water is heated instantaneously via
a heat exchanger and so there are no legionella problems associated with stored water.
The operation of the boost immersion heater
can be controlled by means of an independent
time switch as shown schematically. 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.
This is of great significance for the heat pump application where the heat pump will
not normally be able to raise stored water to above 60°C which is necessary to sterilise
a cylinder.
For example if the hot water is programmed to
come on between say 0600 – 0900 and 1700 –
2200 then the immersion heater timer setting
should be 0640 – 0900 and 1740 – 2200. This will
make maximum use of the heat pump allowing
it to charge the store to the maximum potential
temperature before any use of the immersion
element.
By using the immersion element to boost the water temperature (not needed for
legionella protection as described above), this will provide a greater volume of hot
water from a given size of cylinder (see figures 3-5, page 5). However, the overall
COP of the system will reduce and so to maximise the benefit of fitting a heat pump,
minimal use should be made of the immersion heater.
The immersion heater should not be left permanently switched on as this will drastically
reduce the contribution of heat pump to hot water heating and hence increase the
running costs.
If the use of the immersion heater is necessary to meet the hot water requirements of
a dwelling, then please consult your heat pump manufacturers instructions regarding
the wiring and control of the immersion heater operation.
If these instructions aren’t included in the heat pump manual, then a suggested method
of controlling it is described below.
Additional top and bottom thermostat pockets
can be provided in case a more sophisticated
control system is required to be fitted.
Control By Heat Pump Control System
Where more sophisticated control systems
are used to control the immersion heater, the
immersion heater may be programmed to only
achieve 60°C. Please consult the heat pump
manufacturer’s instructions/help desk for
further information on their control systems to
ensure that the required operation is achieved.
Typical schematic wiring diagram for the boost immersion heater
using programmable immersion heater timer.
Page 37
WIRING DIAGRAM
INSTALLATION
Torrent OV Models (heated by electricity only)
Ensure that the thermal store is filled with water to the water level mark inside the
feed and expansion tank and the ball valve (if fitted) is adjusted correctly.
If a ball valve is fitted turn down the service valve once the system is finally filled to
the point where the warning/overflow pipe will cope with the discharge arising from
a ball valve failure.
Switch the immersion heater on and allow the store to heat up to full temperature.
Ideally the control thermostat should be set to a temperature which does not allow
the temperature at the top of the store does not rise above the low 80s, more typically
75-77. This means that the control thermostat may need to be set at 70°C on some
cylinders, due to the temperature gradient through the store. The actual set point
must set up and checked during commissioning by the installer. The rod thermostats
(XB114) used in these immersion heater incorporate an overheat component which
will operate at circa 95°C. If the overheat component operates the thermostat is no
longer effective and must be replaced.
If it is proposed to ‘powerflush’ the heating
system we would recommend that the Torrent
is isolated from the heating system being
cleaned, as debris from the system could be
washed into the Torrent and could impair its
performance or seriously damage the unit. If
in doubt please contact our Technical Helpline
on 01253 474584.
• Fill the system and flush cold and then refill
and vent the system.
• Add cleanser such as Fernox Superfloc or
sentinel X300 to ensure that flux residues
and the installation debris are removed from
the system.
At the time of commissioning, complete all relevant sections of the Benchmark
Checklist located on the inside back pages of this document.
• Ensure that the store thermostat is set
as described on page 23, and the boiler
thermostat is set at its maximum. Set the
boiler/system pump to give temperature
difference across the boiler between 8 –
15°C.
Electrician/Installer: Please note that water at the hot tap does not indicate that the
Torrent is full. Check that there is water in the feed and expansion tank before switching
on the immersion heaters. Dry firing the elements will cause premature failure which
is not covered by our warranty.
• Switch on the system and to ensure full
cleansing, circulation to all parts of the
system should continue for a minimum of 1
hour.
Non-Electric Torrent Models
• Flush the system hot having checked that
there is no overflow or leaks when the
system is up to temperature.
Instruct the occupant on how to use the off-peak timer (if fitted) and the appliance.
Open the incoming stop valve and fill the domestic hot water system. For open vented
heating system, fill the whole of the primary heating system and the thermal store
with potable water through the feed and expansion tank. For sealed heating system
fill the thermal store with potable water through the feed and expansion tank and
the heating system to the design pressure using the filling loop.
Check the water level in the feed and expansion tank and adjust the ball valve if
necessary. Check the whole of the primary heating and domestic hot and cold
distribution system, including the Torrent for leaks.
It is essential that all systems function properly for optimum performance and to
achieve this:• The primary system should be commissioned in accordance with good practice
and generally in accordance with the requirements of BS 6798, BS EN 12831, the
CIBSE guide and BS 7593. Full details of the requirements are given in PAS 33:1999
under section 10 Commissioning.
• The boiler manufacturers instructions should be followed during the commissioning
phase.
• If a solar thermal system is fitted it should be commissioned as per manufacturers
instructions to ensure compliance with Building regulations.
• When using either cleansing or corrosion inhibitor chemical, the manufacturers
instructions must be followed.
When determining the quantities of cleanser required, the volume of the Torrent
should be added to the water content of the primary system. Although the Torrent
has no special water treatment requirements, the radiators and other parts of the
circuit will require the application of a scale and corrosion inhibitor.
COMMISSIONING
Page 38
• Refill and vent the system and add
appropriate amount of scale inhibitor, such
as Fernox MB1 or Sentinel X100.
Set the boiler temperature to maximum and
with the central heating off, let the system (i.e.
store) heat up (Approximately 1 – 2 hours).
When the store is up to temperature: • Check that the space heating system
controls (e.g. programmer, room thermostat)
are functioning correctly.
Switch off space heating system and ensure that
the store thermostat is set as described on page
23, and the boiler thermostat is set to maximum.
Re-fire the boiler by running a little water and
wait for the boiler to switch off. Check that there
is no live supply from the store thermostat i.e.
it is satisfied.
INSTALLATION
DO - Check the incoming mains water pressure. If it exceeds 5.0 bar at any point
in the 24 hour cycle then a pressure limiting valve set at 3.0 bar should be
fitted where the cold supply enters the property.
DO -
Check the flow rate of the incoming cold water main is adequate to meet
the maximum hot and cold water simultaneous demands.
DO - Check that all connections are in accordance with the labelling on the
thermal store.
DO - Fill the tank manually or adjust the ballvalve so that the water in the F & E
tank is set to the correct level.
DO - Restrict the ballvalve fill rate when full so that the overflow pipe can cope
with the fill rate in the event of a ballvalve failure.
DO - Make sure there is adequate clearance above the F & E tank to service the
valve.
DO - Ensure that range-rated appliances are set to the specified design heat
input and the boiler thermostat is set to maximum for all boilers.
DO - Ensure that the water level in the expansion tank is at least 250mm above the
highest point on the radiator circuit and satisfies the boiler head required.
DO -
Insulate any exposed pipework in the Torrent cupboard.
DO - Plumb the overflow warning pipe in 20mm minimum internal diameter
tubing to discharge in a conspicuous external position, using high
temperature uPVC or copper.
DO -
Check the pump setting. This should be set as high as possible (consistent
with not creating noise) so as to give a small temperature difference across
the boiler, i.e. not greater than 11°C.
DO -
Leave the electricity switched on to the appliance once it has been filled
and commissioned to prevent the pump sticking.
DON’T - Use a combined feed and vent on Torrent indirect installations.
DON’T - Use tube smaller than 28mm between boiler and Torrent when the boiler
exceeds 60,000 Btu (17kW) output.
DON’T - Use dipped flow and return pipes between boiler and Torrent unless the
boiler is fitted with an overheat switch, then follow the recommendations
on page 15.
DON’T - place any clothing or other combustible materials against or on top of this
appliance.
Page 39
IMPORTANT DO’S AND DONT’S
INSTALLATION
Circulating fluid in thermal store pipework
• The Torrent Greenheat and the thermal store pipework must have completed filling
prior to switching the electricity supply to the PWM controller PCB. If there is no
water in these pipes then there may be significant wear on the PWM pump.
• This can be confirmed by
- Checking the thermal store pipework servicing valves are open
- Loosening the connection points on the thermal store pipework in a systematic
manner and checking for water presence.
- Confirming that the feed and expansion tank has completed filling and the
servicing valve is open.
Cold mains water supply to plate heat exchanger and hot water taps
• Confirm that the CW mains stop valve is open
• Open all HW taps and confirm that the water runs freely and that any air is bled
from the DHW system
• Determine the maximum flow rate obtained and record
• 15l/min for heat pump products and 26.5l/min for all others
• If flow rate not as expected determine the cause and rectify
- clean inline strainer
- check the flow restrictor is present and not blocked. It is located in the top of
the inline strainer
Power on
• Switch on the Local fuse spur and observe the PWM pump
• The green LED will flash showing the pump has a power supply and is in standby
mode.
• Open a HW tap and observe the PWM pump
• The green LED will be constantly lit showing the pump has a power supply and is
running to generate HW
NOTE: -The thermal store will only produce hot water when it is hot enough. A mid
40°C thermal store temperature will provide some hot water, higher thermal store
temperatures will provide more.
Inline scale inhibitor (if fitted)
• Check power supply
• PWM Controller PCB supplies a maximum of 12vDC/300mA to the Scale inhibition
board. (From J3)
• Check dip switches set correctly
• The correct settings for tube diameter 22mm is switch no. 3 on.
• Switch no. 4 can be either on or off.
• If the switch no. 4 is turned on the output electromagnetic field is generated
harmoniously otherwise the field is generated inharmoniously.
INSTALLATION REVIEW
Page 40
SERVICING AND MAINTENANCE
Annual Servicing
No annual servicing of the Torrent ECO is necessary.
However, if required, a hot water performance test can be carried out to prove the
appliance is working satisfactorily and within its specification.
If it is decided to carry out the above test, the water level in the top cistern should
also be checked and if necessary topped up.
Changing Components
Failed components should be returned during the in-warranty period on return of
the faulty part (normally 12 months) via the local authorised supplier. A nominal
charge of £30 will be made which is refunded in full by Gledhill on receipt of the
original part and proof of purchase.
After this, spares can be obtained direct from Gledhill Spares, or through any of the
larger plumbers merchants/specialist heating spares suppliers.
Help and advice is also available from the Technical Helpline on 01253 474584.
However, all components are readily accessible and can be changed quickly and easily
by the installer using common plumbing/electrical practice.
Note: All maintenance work on the Torrent ECO must be carried out by a
competent trades person.
After servicing, complete the relevant Service Interval Record section of the Benchmark
Checklist located on the inside back pages of this document.
Page 41
SERVICING AND MAINTENANCE
SERVICING AND MAINTENANCE
UNSATISFACTORY
HOT WATER
PERFORMANCE
Is the power supply
to the PHE controller
switched on
NO
Follow the
fault finding
chart
Switch it on
YES
Is the boiler
thermostat
set to max?
YES
Is the model
suitable for the
hot water
requirement?
NO
Change for
correct
model
YES
NO
Is the Torrent
thermostat set
too low?
Adjust boiler
thermostat to
maximum
NO
Is the boiler
NO
output at least
10% more than the
rad. loading?
Change boiler
for larger
model
YES
YES
Correct Torrent
thermostat setting
(set to 75ºC)
Report to the
boiler
manufacturer
NO
Is the boiler
thermostat
adjustable?
NO
Does the boiler
flow reach
temperature?
YES
YES
Descaling
of the PHE
required
Does the temp
rise across the
boiler exceed 11°C
Adjust to
maximum
YES
Is heat
exchanger
scaled up
internally?
(Indicated by
reduction of
flow rate)
Increase boiler
pump setting
NO
YES
NO
H.W. flow too
great?
YES
NO
YES
Regulate flow
from outlet fitting
(tap)
Alter pipe
sizes
NO
Is the circuit
correctly sized?
NO
YES
FAULT FINDING
Page 42
Is air
trapped in
the primary
circuit?
YES
Fit an air vent
YES
Investigate for
blockage
Is the temp.
rise too high?
NO
Is the temp.
rise now
satisfactory?
SERVICING AND MAINTENANCE
Test Equipment
The initial assumption in this procedure is that the plumbing and water supply is
working effectively. If in doubt please confirm and refer to the end of this section for
advice on specific components.
A multi meter, a weir gauge and a thermometer will be required to confirm that all
the components are working effectively.
The PWM controller PCB manufacturer suggests “Fluke 87 TRUE RMS Multi meter” as
a suitable product. This will be able to measure;
- the frequency output form the Board to the pump
- the Duty cycle % output from the Board to the pump
Connection numbering
For reference the connections to the PCB are numbered below for
2 4
1 3
J19
2 4
1 3
J20
1 2 3
4 5 6
J1
7 14
6 13
5
4
3
2
1
12
11
10
9
8
J8
6
7
8
9
10
J18
J3
J7
8 7 6 5
4 3 2 1
2
1
1
2
3
4
5
Logical sequence;
- check electrical connections fault finding section on page 44 first to ensure your
own safety. This section will potentially identify any short circuited components
and/or wiring faults that need to be rectified before continuing to work on the
appliance.
- check that the correct information is being supplied to the board. This section will
identify if any sensors are faulty or out of tolerance. These will need to be replaced
before continuing
- check that the overheat link is present
- check that the outputs to the board are being generated. If at this stage the board
does not provide the correct outputs then potentially the board should be replaced
- check the pump electrical circuit
Page 43
FAULT FINDING
SERVICING AND MAINTENANCE
Electrical power connections
Reference schematic
opposite
Check procedure
Power supply to PWM
Controller PCB
Electrically isolate power supply at fused spur switch and remove fuse.
Earth continuity test (dead test) – to ensure that the appliance is earthed
Mains voltage test (dead test) - to ensure that the appliance is isolated
Resistance to earth (dead test) – to ensure that the wiring insulation to the product is intact
Short circuit test (dead test) – to ensure that no components in the products circuit have a short circuit
Visually inspect wiring is correct as per fig 4.3
Connect supply
Polarity test (live test) - to ensure that the live is connecter to the live etc
• Check 230V ac across L1 to Earth
• Check 230V ac across L1 to N
• Check for 0 to 15V ac N to earth
Reference to “Boilerfault finder.com” gives clear instructions to on how to perform these tests. (Menu
options 1st. Boiler Fault finder 2nd. Electrical safety checks).
Check inputs to the PWM Controller PCB
Reference schematic
opposite
Check procedure
CW temperature sensor
Power off
Disconnect J18
Measure and record the resistance across terminals 6 and 13
Measure the cold water inlet temperature
Compare the resistance measured with chart “Tasseron NTC 12k thermistor”
The reading should make sense taking measurement conditions into consideration
TS temperature sensor
Power off
Disconnect J18
Measure and record the resistance across terminals 3 and 10
Measure the thermal store temperature
Compare the resistance measured with chart “Tasseron NTC 12k thermistor”
The reading should make sense taking measurement conditions into consideration
HW temperature sensor
Power off
Disconnect J18
Measure and record the resistance across terminals 7 and 14
Measure the Hot water temperature
Compare the resistance measured with chart “HUBA combined flow sensor and NTC 10k thermistor”
The reading should make sense taking measurement conditions into consideration
Flow sensor
Power off
Disconnect J18
Power on Sensor required a power supply 5 VDC
Open a HW tap and set to a flow rate.
Measure and record the frequency across terminals 1 and 12
Compare the frequency measured with chart “flow rate determination”
The reading should make sense taking measurement conditions into consideration
FAULT FINDING
Page 44
SERVICING AND MAINTENANCE
GND GND
IN
OUT
T1
T2
2 4
1 3
J19
2 4
1 3
J20
1 2 3
4 5 6
7 14
6 13
5
4
3
2
1
12
11
10
9
8
J1
2
1
TS sensor
2
1
CW sensor
Combined flow
and
HW temperature
sensor
All the these sensor inputs carry a
Voltage of 5V.
The max cable length is 1 meter.
The sensors connected to the control
Should be free from the appliance earth
J8
6
7
8
9
10
J18
J3
J7
8 7 6 5
4 3 2 1
2
1
1
2
3
4
5
Fuse
Dip
Switch
1234
To
DHW
pipe
L - Brown
PR61
Tasseron NTC 12k thermistor
Temperature
Resistance
Ohm
°C
309396
-40
171840
-30
98932
-20
58879
-10
36129
0
22804
10
14773
20
12000
25
9804
30
6652
40
4607
50
3252
60
2337
70
1707
80
1266
90
952
100
±°C
1.7
1.7
1.6
1.5
1.4
1.4
1.3
1.2
1.2
1.1
1
0.9
1.1
1.3
1.5
1.8
Used on the store temperature sensors and the
cold water inlet temperature sensors
R-nominal
B-value
R-Tolerance
Tmin
Tmax
12Kohm @25°C
B3740K
3%@60°C
-40°C
150°C
Huba combined flow sensor and NTC 10k thermistor
Temperature
Resistance
Ohm
°C
±°C
334275
-36
0.9
47369
-6
0.1
26023
5
0.1
11000
23
0.6
10500
24
0.6
10000
25
0.6
9500
26
0.7
9000
27
0.7
8500
29
1.4
8000
30
1.5
7500
31
1.6
7000
33
1.7
6500
35
1.7
6000
37
1.8
5500
39
1.9
5000
41
2.1
4500
44
2.2
4000
47
2.3
3500
50
2.5
3000
54
2.7
2500
59
2.9
2000
65
3.3
1500
73
3.7
1000
86
4.3
R-nominal
B-value
R-Tolerance
Tmin
Tmax
PWM +
PWM SPARE
E – G/Y
N - Blue
HZ
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
flow rate determination
l/min
HZ
l/min
3.4
95
17.1
4.4
100
18.0
5.3
105
19.0
6.2
110
19.9
7.1
115
20.8
8.0
120
21.7
8.9
125
22.6
9.8
130
23.5
10.7
135
24.4
11.7
140
25.3
12.6
145
26.2
13.5
150
27.2
14.4
155
28.1
15.3
160
29.0
16.2
165
29.9
12Kohm @25°C
B4050K
under 25°C±0.025*T °C over 25°C±0.05*T °C
-40°C
125°C
Page 45
FAULT FINDING
SERVICING AND MAINTENANCE
Check for presence of overheat link
An overheat link connection should be present in connection Junction 7. If you are
fitting a new board the overheat link that is on the board just removed must be retained
as the newly supplied board will not have one fitted.
Check outputs from the PWM controller PCB to the pump
PWM pump power
Check 230V ac across Junction 8, L(10) to E(6) and L(10) to N(8) (live test)
Check for 0-15V ac across Junction 8, N(8) to E(6) (live test)
PWM frequency
Power on the unit
Set the multi meter to measure the frequency
Measure the PWM frequency produced by the board between pins 3 on J8 and pin 9 on J8
This can be between 100Hz – 5000 Hz (1000Hz nominal)
(Lab tested figure of 562Hz recorded in steady state conditions).
Duty cycle
Switch your Multimeter to ‘duty cycle or %’ then it will show a percentage from 0 to 100%.
This percentage is the command for the pump how fast it should run.
When you perform a small DHW tapping, the percentage will be low
When you perform a large DHW tapping, the percentage will be higher
PWM input signal [%] indications
• 0-7 Pump stops (Standby)
• 7-15 Pump runs at minimum speed (operation)
• 12-15 Pump runs at minimum speed (start-up)
• 15-95 Pump speed increases linearly from minimum to maximum
• > 95 Pump runs at maximum speed
FAULT FINDING
Page 46
SERVICING AND MAINTENANCE
Check pump electrical circuits
LED
Meaning
Diagnosis
Cause
Remedy
Lights green
Normal running
Pump runs according
PWM input
Normal operation
n/a
Blinks quick green
Normal stopped
Pump in standby
Blinks red/ green
Abnormal running mode
-pump stopped but still
functional
The pump has stopped
due to external failure
Pump restarts by itself
after the fault has
disappeared
n/a
Under voltage U<160 V
or
Over voltage U>253 V
Check voltage supply
195 V <U< 253 V
Pump overheating:
temperature inside motor
too high
Check water and
ambient temperature
Over speed:
Ensure that there is no
the pump rotor is driven other external flow (other
by an external flow above
pump running) on
system
the maximum allowed
value
Blinks red
Pump out of function
Over current:
the stator winding is in
short circuit due to water
Check for leakage
application on
application
Overload of motor:
friction due to particles
and/or impeller blocked
with debris
Check installation water
quality, clean system if
debris
Blockage:
the pumps is fully
blocked due to debris in
system
Check for blockage.
Turn ON/OFF to reset
the pump by unplugging
the power supply
If the pumps still blinking
red after a power reset
then replace the pump
Pump stopped (blocked)
Faulty electronic module
and/or faulty motor
LED off
No power supply
No voltage on electronics Pump is not connected to
power supply
Check cable connection
LED is damaged
Check if pump is running
Electronics are damaged
Replace pump
Check plumbing components
CW In line filter
Isolate the CW mains supply at the servicing valve
Open HW taps to relieve the pressure
Undo securing nut ensuring that any remaining water is collected
Remove filter and clean it
The flow regulator can be checked at the same time by removing the upper pipe section.
Thermal store return
check valve + return
servicing valve
Isolate both servicing valves
Drain water from the section between the servicing valves
Remove the bottom pipe section
Check for free movement of the check valve incorporated in the body. Remove and replace if the check
valve sticks.
Page 47
FAULT FINDING
FAULT FINDING
Page 48
LED Blinks green?
LED Blinks red &
green?
N
LED Blinks red?
Y
Pump LED
on?
Check board output to
pump
OK?
Check
sensors
OK?
Check Electrical
supply
OK?
Electrically
safe?
N
Y
Y
N
Components
short circuited?
TS full
of water?
Sensors plugged
in securely?
OK?
OK?
OK?
N
Y
OK?
OK?
OK?
Check
Duty Cycle
Resolve
OK?
Over current the stator winding
is in short circuit due to water. Check
for leak
Resolve
Motor or Electronics damaged replace pump
Electronics damaged replace pump
Board
electronics
damaged
N
LED is damaged pump replacement optional
Over load of motor: friction due to
particles or impellor blocked. Clean
debris from system
Resolve
N
Y
N
Check
PWM frequency
Sensors providing
correct signal to PCB?
Wiring as per circuit diagram
& polarity correct?
Pump Over speed Ensure that there
is no other external flow (other
pump running) on system
Normal running: pump runs according to PWM signal and the LED will be constantly on
OK?
Resolve
OK?
LED
continues to Blink red after power
reset
Pump running?
Y
Wiring as per
circuit diagram?
PHE pipework
air locked?
Sophisticated
multi meter
available
N
OK?
OK?
OK?
Pump overheating: Check water
and ambient temperatures
OK?
OK?
Note pump will restart by itself when
the fault disappears
OK?
Normal stopped: pump in standby
Resolve
Under voltage U<160 V or
Over voltage U>253 V
Resolve
Check for blockage in pipework
or pump housing
Resolve
Check cable connection secure and
resistance in cable
Y
Sensors in
correct location?
OK?
OK?
N
Check
power output to pump J8 L(10),
N(8), E(6)
OK?
Water
mains on?
Overheat link
present in J7
Check
plumbing
OK?
SERVICING AND MAINTENANCE
SERVICING AND MAINTENANCE
Description
Stock Code
1
PHE pump - PWM
XB065
2
Plate heat exchanger - 24 plate (All non heat pump models)
GT017
3
Plate heat exchanger - 30 plate (Heat pump models only)
GT528
4
Pump isolating valve - outlet 1”
GT133
5
14” Immersion heater - with stat
XB482
6
Main PCB controller - 1472H
XB111
7
Middle sensor
GT198
8
DHW inlet & outlet sensors
GT198
9
Ballvalve 1212 Part 2
FT206
10
Ballvalve float
FT429
11
Single shot overheat immersion stat
XB114
12
Plastic feed and expansion tank
XB343
13
22mm Blank
FT311
14
28mm Blank
FT466
15
Limit thermostat
XC010
16
Non return valve
GT048
17
Manual reset overheat thermostat
XC011
18 Copper F&E for solid fuel (Bespoke manufacture, contact local Gledhill depot)
n/a
19 Scale inhibitor
XB142
20 Flow sensor
XB091
21 90 Degree isolation valve
GT135
Page 49
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 50
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 51
APPENDIX B
Gledhill (Building Products) Ltd
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).
TERMS AND CONDITIONS
Page 52
(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
(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
Page 53
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
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
No
Is theSYSTEMS
installationPRIMARY
in a hard water
area (above
200ppm)?
ALL
SETTINGS
(indirect
heating only)
Yes
No
If yes,
has a water
scale
reducer
been vented
fitted? system?
Is
the primary
circuit
a sealed
or open
Yes
No
Open
Sealed
What is
type
scale reducer
hasflow
been
fitted?
What
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
Whereand
is the
pressure reducing
valvebeen
situated
Time
temperature
controls have
fitted(ifinfitted)?
compliance with Part L of the Building Regulations?
What of
is control
the pressure
reducing
valve setting?
Type
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 tundish
andwater
discharge
pipework
been connected
What
is the hot
temperature
at have
the nearest
outlet? and terminated to Part G of the Building Regulations
bar
Other
No
No
°CYes
Areappropriate
all energy sources
fitted
withinsulated
a cut out up
device?
All
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
store
is achievable?
What
the temperature
pressure reducing
valve setting?
bar
Whataiscombined
the maximum
hot water
temperature?
Has
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
the expansion
vessel
or internal
air space been
The system
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 54
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 55
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 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]
After Sales Technical Support Tel: 01253 474584
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”
To protect our environment,
we use copper a totally
recyclable metal, which
never becomes waste.
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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