Heatstore HSR25 User manual

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Installation and User Instructions
Rectangular Combination Water Heaters
Models: HSR25, HSR45, HSR70, HSR 5
PACK CONTENTS
Heater, Float Valve & Arm, Float, Overflow Fitting, Dip Tube, Screened
Breat er, Wall Mounting Collars & Installation and User Instructions.
WARNING
T is water eater must only be installed by qualified persons.
SY0022400 Revision 6.
Please read and understand t ese instructions before starting work.
Please leave t is leaflet wit t e user following installation.
HEATSTORE

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The HSR Series units are designed to supply hot water for handwashing, dishwashing
and general purposes to cloakrooms, canteens and kitchen areas. Containing an
integral cold water cistern, they are ideal for installations where the cold feed is from
the mains supply but an unvented situation is impractical.
Please read and understand these instructions prior to installing your HSR Series
vented water heater. Particular attention should be paid to the section headed
IMPORTANT INSTALLATION POINTS. ollowing installation and commissioning
the operation of the heater should be explained to the customer and these instructions
left with them for future reference.
Electrical rating -
2.8 kW @ 230V
3.0 kW @ 240V
Maximum inlet pressure
1 MPa (10 bar)(145psi)
INTRODUCTION
TECHNICAL SPECIFICATION
Table 1
A
BC
D
E
ledoM
)sertil(seiticapaC)mm(snoisnemiD)gk(sthgieW
knaTtoH nretsiC
knaT ABCDE ytpmElluF
5RSH55.408854517030865154
54RSH54864801609014746147
07RSH0785501016090146585301
511RSH5118110101654401471803351

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1.0 IMPORTANT INSTALLATION POINTS
1.1 Ensure that the wall or supporting structure is of adequate strength to support the
heater. (Refer to table 1.)
1.2 The Water Regulations require a minimum of 350 mm unobstructed space above
the heater lid to allow the float valve to be replaced. However, a space of 200 mm is
sufficient to replace the HSR Series float valve.
1.3 The base of the heater MUST be level with, or higher than, the highest draw off
point. (Refer to figure1)
1.4 To meet the requirements of the Water Supply (Water ittings) Regulations 1999,
Water Byelaws 2000 Scotland and the Water Regulations Northern Ireland:
1. A servicing valve shall be installed on the inlet pipe adjacent to the storage
cistern. Schedule 2 - Section 16(2).
2 . A servicing valve shall be installed on the outlet pipe.
Schedule 2 - Section 16(3).
2.0 INSTALLATION - GENERAL REQUIREMENTS
DRAIN HOT
OUTLET
OVERFLOW
MAINS COLD FEED
NBTHE HEATER MUST BE LEVEL WITH OR
HIGHERTHANTHE HIGHEST OUTLET
FIG : 1 TYPICAL INSTALLATION
SERVICING
VALVES

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2.1 Decide on the best position for the heater taking account of paragraphs 1.2 and 1.3
and inlet and outlet connections. The float valve and overflow assembly can be fitted
on either side of the heater.
2.2 Using the template provided mark the position of the top two fixing holes. Before
drilling the wall ensure there are no hidden services such as water, gas or electrical
cables embedded in the area of the wall to be drilled.
2.3 10mm wall fixings are recommen e
These are not supplied
Drill the wall and insert the two top wall
fixings. Assemble the spacing collars as
shown in figure 2. Locate the heater onto
the spacing collars and mark the bottom
fixing holes. Remove the heater, drill the
wall and fit the bottom wall fixings.
2.4 it the float valve complete with float, to the cistern tank.The float valve is fitted
with a white seating which is suitable for inlet pressures from 1bar to 10 bar. If the
pressure is below 1 bar the seating must be swapped with the red seating attached to
the float valve arm. Access to the seating is obtained by undoing the small plastic
nut. (Refer to figure 3.)
RUBBERWASHER
ADJUSTING SCREW
WITH LOCKING NUT
CISTERNTANKOUTER CASING
NYLON SPACER LOW PRESSURE SEAT
FLOAT AR
M
SMALL PLASTIC NUT
FIG 3 : FLOAT VALVE - FITTING
S
ECURING NUT
WALL
W
ALL FIXING BOLT
WASHER
SPACING COLLAR
FIG 2 : HEATER FIXING DETAILS

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2.6 Make the electrical connection to the heater and set the controls. Do not switch on.
See section 3.
2.7 it a straight 3/4 BSP female to 22mm compression fitting to the 3/4 BSP outlet
boss.
2.8 Locate the heater onto the top fixing collars. it the two bottom fixings and tighten.
2.9 Connect the heater outlet to the services. Ensure the outlet fitting is supported
during assembly to prevent unnecessary stress on the tank. When plumbing ensure
that connecting pipework leaves adequate clearance for the removal of the heater plate.
it an isolating valve close to the heater outlet. This enables terminal fittings to be
changed without draining the heater down.
2.10 Connect the mains water supply to the float operated valve using 15mm o/d pipe.
NB the float valve connection is a flat face with a 1/2 BSP male thread. it a female
1/2 BSP to 15mm copper tap coupling to the float valve. A servicing valve must be
fitted in the 15mm supply pipe close to the cistern to enable the unit to be isolated for
servicing.
2.11 Connect the overflow pipe. The connection for the overflow pipe is 22 mm
compression for a 22mm o/d pipe. The overflow pipe must be laid in a continuous fall
and end in a safe, visible position.
2.12 it the washer to the screened breather, insert the screened breather into the hole
in the lid and secure with the plastic nut on the underside of the lid.
2.5 it the overflow fitting complete with dip tube. (Refer to figure 4.) it the blanking
plugs in the unused holes.
OVERFLOW ASSEMBL
Y
NYLON SPACER
OUTER CASE
CISTERN
TANK
RUBBER WASHER
D
IP TUBE
FIG 4 : OVERFLOW - FITTING

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3.6 it the terminal cover and tighten the cable grip screws.
3.7 After fitting the heater to the wall, ensure the electrical supply is off. Connect the
supply cable to the connection point.
DO NOT SWITCH ON THE ELECTRICAL SUPPLY UNTIL WATER LOWS
ROM THE HOT TAP.
3.3 Remove the terminal cover on the bottom of the unit by removing the four screws.
Check and adjust the thermostat and thermal cut-out. See TEMPERATURE
SETTINGS.
3.4 Strip the outer sheath of the cable and the insulation of the conductors to the
required lengths, ensuring that the outer sheath will be held in the cable grip in the
cover when the connections are made. Slacken off the the cable grip screws and
thread the cable through the grip..
3.0 INSTALLATION - ELECTRICAL REQUIREMENTS
WARNING: This appliance must be earthed.
It is suitable for 230/240V a.c. supply only.
Installation must be in accor ance with BS 78671, Requirements for Electrical
Installations (I.E.E. Wiring Regulations.)
3.1 The electrical supply should be fused at 13 A and be via a readily accessible
double pole isolating switch with a contact separation of at least 3mm in both
poles.
3.2 The connection between the heater and the connection point should be made with
heat resisting (85°C) cable with a minimum cross sectional area of 1.5 mm2
3.5 Connect the brown (or red) conductor to the thermal cut-out (L).
Connect the blue (or black) conductor to the neutral element teminal.
Connect the green/yellow (or green) conductor to the stud marked .
Refer to
figure 5

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Control Thermostat :
The heater is fitted with an adjustable Cotherm TSD 01105 rod type
thermostat. This does not have a calibrated scale. The minimum setting
(approximately18°C) is indicated by - and the maximum settting (approximately 70°C)
by +. It is recommended that the thermostat is set by turning to the maximum setting,
and then turning back by an angle of 45° (one eighth of a turn).
Settings above 60°C are not recommended.
Thermal Cut-out
The heater is fitted with a manually re-settable thermal cut-out which will interupt the
power to the element in the event of overheating . In the event of the thermal cut-out
operating it is re-set by pressing the re-set button (refer to figure 5) after checking the
thermostat. See section 8.
The thermal cut-out has a calibrated scale and should be set 15°C above the control
thermostat setting, but not above 85°C.
iiiiiiiiiii
4.0 TEMPERATURE SETTINGS
THERMAL
CUT-OUT
CONTROL
THERMOSTAT
N
L
RE-SET BUTTON
HEATER PLATE
NUTS (4 OFF)
"F"
"F"
FIG 5 : ELECTRICAL CONNECTIONS
NEUTRAL TERMINAL

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5.4 Open the isolating valve on the inlet. Open a hot water tap on the outlet, turn on
mains water supply to the heater.
5.5 Allow unit to fill and run the hot tap for a short while to purge any air and flush
out the pipework. Close the hot tap.
5.6 When the float valve has shut off check the level of water in the cistern tank and
adjust as necessary.
5.7 Check the installation for leaks.
5.8 it the lid and secure with the four screws provided.
5.9 Turn on the electrical supply.
5.1 Do not switch on the electrical supply until the unit has been fille with water an
checke for leaks.
5.2 Ensure the isolating valve on the outlet is open and that all the taps connected to
the outlet are closed.
5.3 Check the cold feed and vent pipe are free from obstruction. (Refer to figure 6).
5.0 COMMISSIONING
WATER LEVEL
VENT PIPE
COLD FEED
FIG 6 : INSIDE CISTERN TANK
)sertil(yticapaC55407511
emitpUtaeH
)setunim( 030508531
Table 2 - Approximate heat up times with an inlet temperature of 10°C and a
thermostat setting of 60°C.

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6.1 Isolate the unit from the electrical supply.
6.2 Check the water temperature from a hot tap, and run until cold.
6.3 Turn off the water supply to the unit at the servicing valve.
6.4 Drain the unit by opening a outlet hot tap and removing the drain nut on the
underside. Take care as the water from the drain pipe may be very hot.
6.5 Slacken off the cable grip screws in the terminal cover, remove the four fixing screws
and remove the terminal cover.
6.6 Disconnect the supply cable from the heating element and undo the four heater plate
retaining nuts.
6.7 Remove the heater plate. If difficulty is experienced in breaking the joint between the
heater plate and and water container, screw two OBA (or M6) screws into into the holes
marked   in figure 5.
6.8 Check the settings of the thermostat and thermal cut-out on the new heater plate.
6.9 Re-assemble in reverse order, taking care to use the new gasket but do not fit the
terminal cover.
6.10 Refit the drain nut and turn on the water. Check for leaks.
6.11 Refit the terminal cover.
6.12 When water runs from the hot tap, close the tap and turn on the electrical supply.
6.0 MAINTENANCE - HEATING ELEMENT REPLACEMENT

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NOTE: Use only Heatstore approved spare parts. Replacement of any parts with
components not recommended by Heatstore will invalidate the guarantee and may
render the installation dangerous.
7.0 SPARE PARTS
The following spare parts are available for your Heatstore water heater. Please refer to
the Rating Label on the bottom of your heater before ordering to ensure the correct
spare part is obtained.
IMPORTANT NOTE
On all heaters installed outside the UK it is essential to quote all the model details on
the rating label especially voltage and kW rating.
DO NOT REPLACE WITH PARTS NOT RECOMMENDED BY HEATSTORE -
THIS WILL INVALIDATE YOUR GUARANTEE AND MAY RENDER THE
INSTALLATION DANGEROUS.
ESCRIPTION CO E NO.
Heaterplate Gasket ............................................... S101
Drain Screw & Washer ......................................... S124
Thermal cut-out .................................................... S567
Heaterplate Assembly c/w Thermostat & Cut-out S3407
eed Pan Cover 25 litre ........................................ S3408
eed Pan Cover 45 litre & 70 litre ......................... S3409
eed Pan Cover 115 litre ....................................... S3411
Bylaw 30 Kit ......................................................... S3412
loat Valve Assembly ........................................... S5512
Control Thermostat .............................................. 95980025

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Disconnect the electrical supply before removing the terminal cover. It is recommended
that any service operations on this Heatstore heater are carried out by a competent
person.
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8.0 FAULT FINDING
.
ACTIONPOSSIBLE CAUSESFAULT
1. Check switches closed.
2. Check fuses/MCB. If blown/tripped
identify cause and and rectify before
replacing/re-setting.
3. Check supply cord not damaged.
1. Electrical supply fault.Water not heating
2. Check cut-out. If operated, reset and
check thermostat for failure in the
closed position or too high a setting. See
section 3.0
If necessary replace thermostat/thermal
cut-out .
2. Thermal cut-out tripped.
4. Check thermostat for failure open
circuit, replace if necessary.
4. Thermostat faulty
- open circuit.
Water too hot 1. Check thermostat setting.
1. Thermostat set too high.
3. Element failure. 3. Replace element. See section 6

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The manufacturer will make good, by repair, or at his option by the supply of a
replacement, defects which, after proper installation, appear in the goods, within a
period of twenty four calendar months after the goods have been delivered and arise
solely from faulty design, materials or workmanship, provided always that defective
parts are promptly returned by the user free to the manufactures works, unless
otherwise arranged. The repaired or new parts will be delivered by the manufacturer
free of charge.
Provided further that in respect of parts or components not of the manufacturers
manufacture, he will give the user a guarantee (if any) which the manufacturer may
have received from the supplier of such parts or components in respect thereof, but not
so as to impose on the manufacturer of such parts or components a liability greater
than that imposed on him by the preceding paragraph.
Save as aforesaid the manufacturer shall not be under any liability in respect of
defects in goods delivered or for any injury, damage or loss resulting from such
defects, and his liability under this guarantee shall be in lieu of any warranty or
condition implied by law as to the quality or fitness for any particular purpose of such
goods.
This guarantee in no way affects the statutory rights of the consumer.
The policy of Heatstore is that of continuous improvements and development,
therefore the right is reserved to change specification without notice.
HEATSTORE
Island Park
Bristol Broadway
Bristol
BS11 9 B Tel: [phone] ax: 01179 235374
GUARANTEE
KEEP THIS LEAFLET IN A SAFE PLACE FOR FUTURE REFERENCE