Heatrae Sadia Multipoint 30 Guía

MULTIPOINT 30/50

Installation and User Instructions

for the

MULTIPOINT

30 and 50 litre Unvented Water

Heaters

Please read and understand these instructions before starting

work.

Please leave this leaflet with the user following installation

36 00 5720 Issue 03

Please read and understand these instructions prior to installing your Multipoint

unvented water heater. Particular attention should be paid to the section headed

IMPORTANT INSTALLATION POINTS. Following installation and commissioning

the operation of the heater should be explained to the customer and these instructions

left with them for future reference.

TECHNICAL SPECIFICATIONS

Electrical rating .................................................... 2.75/3kW 230/240V ~

or ..................................................................... 0.9/1kW 230/240V ~

Capacities ............................................................. 30 or 50 litres

Weight (full) ......................................................... 30 litre - 42.5kg

............................................................................. 50 litre - 69.3kg

Rated pressure ..................................................... 6 bar

Minimum recommended supply pressure ............ 0.8 bar

Temperature/Pressure Relief Valve ....................... 90oC/7 bar

COMPONENT CHECK LIST

Before commencing installation check that all the following components have

been supplied in the Installation Kit.

•Expansion Vessel 3/4”BSP male, precharge pressure 3.5 bar c/w wall mounting

bracket

•Combined Pressure Reducing Valve/Strainer 1/2”BSP female, factory set at 3.5

bar

•Single Check Valve 15mm x 15mm compression

•Pressure (expansion) Relief Valve 1/2”BSP male inlet, 1/2”BSP female discharge,

factory set at 6 bar

•Tundish 1/2”BSP male inlet, 3/4”BSP female outlet

•Wall mounting bracket set

•Self adhesive Levelling Feet (2 off)

•Moulded plastic Spacer

1.0 IMPORTANT INSTALLATION POINTS

1.1 The Multipoint unvented water heater is factory fitted with a Temperature/Pressure

Relief Valve. The factory fitted Temperature/Pressure Relief Valve must not be

removed, blocked or restricted in any way. FAILURE TO PROVIDE ADEQUATE

TEMPERATUREAND PRESSURE RELIEFWILLINVALIDATEANYGUARAN-

TEEAND LEAD TOADANGEROUS INSTALLATION

1.2 Expansion must be accommodated within the system. Use of the Expansion Vessel

and Check Valve provided in the Installation Kit will fulfill this function.

1.3 The installation of this water heater is covered by Building Regulation G3. In order

to fulfill the requirements of this Regulation the heater should be installed in

MULTIPOINT 30/50

Diagram 1 Schematic Installation Diagram

WARNING: IFWATER FLOWS FROM THE PRESSURE RELIEF

VALVE OR TEMPERATURE/PRESSURE RELIEFVALVE THE ELEC-

TRICITYSUPPLYMUSTBE SWITCHED OFF IMMEDIATELY. CON-

TACT THE HEATRAE SADIA SERVICE TEAM (Tel: 08701 600125) OR

ANAPPROVED INSTALLER.

to fulfill the requirements of this Regulation the heater should be

installed in accordance with these instructions by a competent

installer (i.e. an installer trained in the installation of unvented water

heating systems). All the control and safety valves provided in the

Installation Kit must be used and plumbed in accordance with

Diagram 1.

1.4 The installation must be carried out in accordance with the relevant

requirements of:

•The appropriate Building Regulations either The Building

Regulations, The Building Regulations (Scotland) or Building

Regulations (Northern Ireland).

•The Water Fittings Regulations or Water Byelaws in Scotland.

2.0 INSTALLATION - GENERAL REQUIREMENTS:

2.1 The Multipoint must be installed by a competent installer in accord-

ance with Building Regulation G3.

2.2 National Wiring rules may contain restrictions concerning the

installation of these units in bathrooms.

2.3 The unit should be vertically wall mounted using the wall bracket and

levelling feet supplied. The water connections must always be on the

bottom of the unit.

2.4 Enough space should be left below the unit for pipe connections and

above the unit for access to the Temperature/Pressure Relief Valve.

Refer to Diagram 2 and the Dimensions Table to determine a suitable

position for the heater.

3.0 INSTALLATION - WALL MOUNTING

3.1 Using Diagram 2 and the Dimensions Table as a guide mark the position of the

wall mounting bracket and lower location point. Drill and plug the wall with

suitable fixings, fix the wall bracket to the wall.

3.2 Fit the heater wall bracket to the rear of the unit using the screws provided

ensuring the central location bolt is pointing towards the bottom of the unit.

3.3 Remove the backing paper from the self adhesive pads of the Levelling Feet and

affix them to the lower back of the unit in the approximate positions shown on

Diagram 3.

3.4 Hang the unit on the wall mounting bracket ensuring the location bolt locates in

the hole in the wall bracket. Position the moulded spacer block between the tab

on the bottom cover moulding and the wall. Insert a No. 10 x 2 1/2”long screw

through the tab and spacer block and tighten into wall plug.

Diagram 2 Dimensions

50 Litre30 LitreDim e n s io n

888616A

937665B

1060788C

778506D

2.5 NOTE: Ensure that the wall can support the full weight of the unit (see TECHNI-

CAL SPECIFICATIONS) and that there are no hidden services (electricity, gas, or

water) below the surface of the wall.

2.6 DO NOT install where the unit may freeze.

MULTIPOINT 30/50

4.0 INSTALLATION - PLUMBING

4.1 Refer to the section IMPORTANT INSTALLATION POINTS. Plumb

in the valves in the sequence shown in Diagram 1. Ensure the valves

are installed in the correct orientation by reference to the direction of

flow arrows marked on them. The Expansion Vessel should be

supported by its own wall bracket (supplied), do not rely on the

pipework alone to support it.

4.2 The water connections to the unit are 15mm diameter copper tubes

suitable for compression fittings. Do not use solder joints as this will

damage the heater and may prevent servicing under warranty.

4.3 The INLET is marked BLUE, the OUTLET is marked RED. Several hot

outlets via conventional taps can be served, however, individual site

demands should be considered when choosing capacity and the

number of outlets to be served.

4.4 It is recommended that a WRAS Listed isolating valve is fitted on the

cold water supply to the heater.

4.5 A drain cock must be fitted below the heater in the inlet pipework. It

must be sited between the heater and the Check Valve (see Diagram

1).

4.6 Plumbers Paste must not be used as it can impair the operation of the

valves.

Diagram 3 Bracket and Levelling Feet Positions

5.0 INSTALLATION -

ELECTRICAL REQUIREMENTS

WARNING: This appliance must be earthed. It is suitable for a.c. supply only. Discon-

nect the electrical supply before removing the terminal cover. Installation must be in

accordance with the current I.E.E. Wiring Regulations.

5.1 The unit is supplied fitted with a 1.0m 3 core 1.5mm2flexible cable. The electicity

supply should be fused 13 Amp for a 3kW model and 5 Amp for a 1kW model and

be via a double pole isolating switch with a contact separation of at least 3mm in

both poles. Refer to the schematic wiring diagram below.

5.2 The wires are colour coded as follows:

Green and Yellow EARTH

Brown LIVE (L)

Blue NEUTRAL (N)

6.0 INSTALLATION -

DISCHARGE PIPE REQUIREMENTS

It is a requirement of Building Regulation G3 that any discharge from an

unvented system is safely conveyed to where it is visible but will not cause danger

to persons in or about the building.

The Tundish supplied and the discharge pipes should be fitted in accordance with the

Requirements and Guidance Notes of Building Regulation G3. These are essentially

as follows:

G3 Requirement

6.1 Discharge pipe MUST terminate in a SAFE, VISIBLE position.

G3 Guidance

6.2 Tundish should be within 500mm of the Temperature/Pressure Relief Valve and,

wherever possible, be in a visible position.

6.3 Discharge pipe should have a vertical fall of at least 300mm from the Tundish.

6.4 Minimum discharge pipe size should be one pipe size larger (22mm) than the

Temperature/Pressure Relief Valve discharge port.

Wiring Diagram

MULTIPOINT 30/50

7.0 COMMISSIONING

7.1 Do not switch on the electrical supply until the unit has been filled

with water and checked for leaks.

7.2 Check that all installation, electrical and discharge pipe require-

ments have been met.

7.3 Check that all water and electrical connections are tight.

7.4 Open a hot water tap, turn on mains water supply to the heater.

7.5 Allow unit to fill and leave hot tap running for a short while to

purge any air and flush out the pipework. Close the hot tap and

check the system for leaks.

7.6 Manually test the operation of the Temperature/Pressure Relief

Valve and, if fitted, the Pressure (expansion) Relief Valve. Ensure

water flows freely from the valve(s) and through the discharge

pipes.

7.7 Switch on the electrical supply. The indicator light will illuminate

during heating. When the set temperature is reached the indicator

light will go out.

7.8 The set temperature can be adjusted by rotating the knob located in

the terminal cover. It is possible to lock the thermostat knob in

either the mid-range or a “hot” position by following the procedures

in 7.9 or 7.10 below. Always switch off the electrical supply before

removing the terminal cover.

7.9 Setting the “mid-range” position:

Rotate the thermosatat knob to the mid postion. Remove the termi-

nal cover by using a large flat bladed screwdriver to depress the four

snap lugs located in the four rectangular depressions on the bottom

cover. Holding the thermostat knob in position turn the terminal

cover over and remove the backing disc from the underside of the

cover. Turn the backing disc over and refit to the knob ensuring the

notch locates with the boss on the underside of the cover. Refit the

terminal cover, the thermostat will now be locked in the “mid-

range” position.

6.5 Maximum total hydraulic resistance of the discharge pipe should

not exceed that of 9m of straight pipe.

6.6 Discharge pipe should have a continuous fall (minimum 1:200).

6.7 The discharge pipe should not be blocked or used for any other

purpose.

Information Sheet No. 33 available from the British Board of

Agrement gives further advice on discharge pipe installation.

7.10 Setting the “hot” position:

Rotate the thermostat knob to mid way through the hot graduated range (red

graphic). Follow the procedure detailed above, however in this case the knob

should be held in the “hot” position previously set. When the terminal cover has

been refitted the thermostat will be locked in the “hot” position. This position is

recommended when using the heater in conjunction with a thermostatic blending

valve.

8.0 MAINTENANCE - DESCALING

Little maintenance is required, however in hard water areas the unit will require

periodic descaling to ensure efficient operation. To descale the unit:

8.1 Switch off and disconnect the electrical supply. Turn off the water supply to the

unit.

8.2 Open a hot tap to relieve any system pressure. Empty unit by opening the drain

cock in the inlet pipework.

8.3 Remove the terminal cover by using a large flat bladed screwdriver to depress the

4 snap lugs located in the 4 rectangular depressions on the bottom cover.

8.4 Disconnect the electrical terminations to the element. Disconnect earth links to

the earthing stud. Withdraw the thermostat and thermal cut-out capillary tubes

from the pocket on the element plate.

8.5 Remove the element plate assembly by unscrewing the five securing screws,

tapped jacking holes are provided (NOTE: a quantity of water may still be

present in the container, it is recommended that a container be placed under the

unit to collect any spillage). Remove any loose scale from the container. Carefully

clean off any scale from the element and thermostat pocket. DO NOT clean scale

from interior container walls.

8.6 Re-assemble the element plate assembly fitting a new sealing gasket. Rewire the

unit with reference to the Wiring Diagrams.

8.7 Re-commission the unit following the INSTALLATION and COMMISSIONING

instructions.

9.0 MAINTENANCE - SAFETY VALVES

9.1 The Temperature/Pressure Relief Valve and the Pressure (expansion) Relief

Valve should be regularly checked. Manually operate the valves by either

twisting the cap or lifting the lever. Ensure water flows freely from the valve(s)

and through the discharge pipes (NOTE: the water discharged may be very hot).

Ensure the valve(s) reseat correctly when released.

9.2 Clean the strainer incorporated in the Pressure Reducing Valve. To inspect and

clean the strainer turn off the mains water supply to the heater and open a hot

tap to relieve the system pressure. Unscrew the black cap from the Pressure

MULTIPOINT 30/50

Reducing Valve and remove. The strainer will be removed with the

cap. Wash any particulate matter from the strainer under clean

running water. Replace the cap assembly ensuring the sealing ring

is correctly fitted. Do not use any other type of sealant. Close hot

tap, open mains stop cock and check for leaks.

10.0 MAINTENANCE -

EXPANSION VESSEL PRECHARGE PRESSURE

The Expansion Vessel should have a precharge pressure of 3.5 bar (51

p.s.i.). This can reduce over time and eventually require re-charging. To

do this:

10.1 Turn off water supply to the unit; open a hot tap to relieve system

pressure.

10.2 Remove dust cap from top of Expansion Vessel

10.3 Check pre-charge pressure using a tyre pressure gauge. If the

pressure is lower than 3.5 bar (51 p.s.i.) it should be recharged

using a tyre pump (Schraeder Valve type). DO NOT OVER

CHARGE.

10.4 Re-check pressure and when correct replace dust cap.

10.5 Turn on mains water supply and close hot tap.

11.0 SPARE PARTS

The following comprehensive list of spare parts is available for your

Multipoint water heater. Please refer to the Rating Label on the side of

your heater before ordering to ensure the correct spare part is obtained.

DO NOT REPLACEWITH PARTS NOT RECOMMENDED BY

HEATRAE SADIA- THIS WILLINVALIDATEYOUR GUARANTEEAND

MAY RENDERTHE INSTALLATION DANGEROUS.

DESCRIPTION CODE NO.

Element plate assembly - 30/50 litre 3kW ............. 95 606 926

Element plate assembly - 30/50 litre 1kW ............. 95 606 925

Thermostat ........................................................... 95 612 667

Thermal cut-out .................................................... 95 612 666

Indicator light ....................................................... 95 607 995

Element plate gasket ............................................ 95 611 811

Pressure (expansion) Relief Valve ........................ 95 607 986

Temperature/Pressure Relief Valve ....................... 95 905 045

Check Valve .......................................................... 95 607 987

Expansion Vessel ................................................. 95 607 988

Pressure Reducing Valve ..................................... 95 607 989

Terminal cover c/w thermostat knob .................... 95 614 184

12.0 FAULT FINDING

Disconnect the electrical supply before removing the terminal cover. It is recom-

mended that any service operations on the Multipoint heater are carried out by a

competent person.

NOTE: Use only Heatrae Sadia approved spare parts. Replacement of any parts with

components not recommended by Heatrae Sadia will invalidate the guarantee and

may render the installation dangerous.

ACTIONPOSSIBLE CAUSESFAULT

1. Check electrical supply1. Electrical supply faultWater not heating

WiringDiagram)

replace thermostat/thermal cut-out (see

check thermostat operation. If necessary

2. Check cut-out, if operated reset and

2. Thermal cut-out tripped

necessary

3. Check thermostat operation, replace if

3. Thermostat fault

replace.

Valve. If greater than 3.5 bar (51 p.s.i.)

1. Check pres sure from Pressure Reducing

ressure

1. Excessive mains water

(continuously)

Pressure Relief Valve

Discharge of water fro

2. Replace Pressure Relief Valve2. Pressure Relief Valve fault

(see Section 10)

Expansion Vessel pre-charge pressure

5. Check and, if neces sary, re-charge

Expansion Vessel

Loss of pressure from

(intermittently)

Presure Relief Valve

Discharge of water fro

Replace thermostat and thermal cut-out

cut-out fault

Thermostat and thermal

Pressure Relief Valve

water/s team from

Relief Valve and/or

Temperature/Pressure

Discharge of water fro

in accordance with flow direction arrows

1. Check all valves are correctly installed

fitted

1. Inlet valves incorrectly

o water flow

2. Check mains water supply is on

turned on

2. Mains water supply not

not blocked.

strainer in the Pressure Reducing Valve is

3. Check for obstructions. Check the

supply

3. Blockage in mains water

while.

milkines s will dis ap pear after a s ho rt

oxygen bubbles when flowing. The

Water from a press urised s ystem releases

Oxygenated water"Milky" water

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