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Supplied By www.heating spares.co  Tel. 0161 620 6677

3

Part No. 5000893

Introduction & User Information

Introduction and User Information

Samples of the Main multipoint water heaters have 
been examined by Advantica Technologies Limited, a
United Kingdom Notified Body. The range is certified
to comply with the essential requirements of the Gas
Appliance Directive 90/396/EEC and are therefore 
permitted to carry the CE Mark.

This appliance is not suitable for use with a swivel 
spout.

This appliance is room sealed instantaneous water 
heater designed to supply hot water to several taps 
which may be situated in different rooms, but not 
necessarily at the same time.

The pilot is lit by a piezo spark igniter; batteries or 
electricity are not required.

The main burners will automatically light when a 
domestic hot water tap is turned on and go out when
the tap is turned off.

Ensure that the clearances shown in (Page 7,
Installers section) are maintained at all times.

Please take time to read through these 
instructions to familiarise yourself with the water
heater.

This appliance contains an energy cut-off device that
will shut down the gas supply to the appliance if the 
water in the heat exchanger exceeds the anticipated
temperature limit. Although intended to guard against
an internal fault, it may be triggered inadvertently by
other causes, especially during the summer months 
when the inlet water temperature is unusually high.
Allow the appliance to cool before re-lighting.

WARNING:

If the energy cut-off device is reacting to an 
internal fault, the shut down may be accompanied
by noises from the heat exchanger and pipework,
and it is possible that STEAM will come out of the
hot tap when turned on. If this occurs, arrange for
the appliance to be serviced.

Your installer/engineer will recommend 
replacement of the Pressure Relief Valve 
Assembly to ensure continued safety.

Running Costs. To work out the approximate running 
costs per hour for this fire, perform the following 
calculation:-

Heat Input in kW x Cost Per kWh
= Running Cost Per Hour

Heat inputs for the various settings are shown in the 
Technical Data & Costs per kWh are shown on your 
gas bill.

Washing Machines

Information regarding the use of washing machines 
with this appliance is shown at the rear of these 
instructions.

Shower Systems

Information regarding the use of shower systems 
with this appliance is shown at the rear of these 
instructions. In hard water areas, shower roses may 
require regular cleaning as scale my form and restrict
the flow of water.

The 

Mersey Super is Not

suitable for use

with a shower system.

WARNING:

The Outer Case of this Appliance MUST BE 
CORRECTLY positioned and secured in 
place before any attempt is made to light the
burners. If in doubt, call your Installer.

IMPORTANT:

If it is known or suspected that a fault exists
on the appliance, it must not be used until 
the fault has been corrected by a competent
person.

REPLACEMENT PARTS:

WARNING: The use of replacement parts on
this appliance which are not recommended 
by Potterton may affect the product safety,
performance and warranty.

We recommend that replacement parts be 
obtained only from Curzon branches or 
other recognised Potterton spares outlets.

Summary of Contents for Mersey Super

Page 1: ...safety it is law that all gas appliances are installed by competent persons in accordance with the above regulations Failure to install appliances correctly could lead to prosecution Installation must...

Page 2: ...33 Shower Information 34 Models covered by these Instructions Mersey Super G C No 52 476 38 Medway Super G C No 52 476 39 Thames G C No 52 476 40 Important Installation Commissioning Service Repair Th...

Page 3: ...cut off device is reacting to an internal fault the shut down may be accompanied by noises from the heat exchanger and pipework and it is possible that STEAM will come out of the hot tap when turned...

Page 4: ...til the pilot is lit The pilot flame can be observed through the pilot viewing window 3 Hold the ON button in for a further 10 seconds after the pilot is lit then release If the pilot goes out repeat...

Page 5: ...causing discomfort to the shower user Thames This appliance has a temperature selector with the widest adjustment range of any Main Instantaneous Water Heater The actual temperature selected in the l...

Page 6: ...dentification Badge is brightly coloured and located underneath the controls tray at the front of the appliance and will be visible after removal of the bottom cover Cleaning The outer casing is stove...

Page 7: ...USE THE CUPBOARD FOR STORAGE Mersey Super Medway Super Thames Fig 7 Note All models the data badge will be visible after removing the outer case The identification badge will be visible after removin...

Page 8: ...4 6 Sales Code 31 10321 150 230 6 9 Sales Code 31 10322 230 380 9 15 Sales Code 31 10323 380 610 15 24 Sales Code 31 10324 SeDuct Flue Kit Sales Code 31 12968 Finish White stoved paint with contrastin...

Page 9: ...erial Copper with lead tin coating Description Finned copper tube Known Hazards Inhalation or ingestion of lead dust or fumes may cause headache and nausea Precautions Unused heat exchangers present m...

Page 10: ...al cannot re enter the building or any other adjacent building through ventilators windows doors natural air infiltration or forced ventilation air conditioning If products of combustion are found to...

Page 11: ...inlet water outlet and gas pipes 2 If installing a new flue terminal guidance is given on the template sheet supplied with the terminal pack Note Where the appliance is to be installed into a SEDUCT...

Page 12: ...s meter and the number of bends used The gas installation should be in accordance with the relevant standards In GB this is BS 6891 In IE this is the current edition of I S 813 Domestic Gas Installati...

Page 13: ...sition 3 Ensure that the mains water supply is turned OFF IMPORTANT When routing the supply pipe to the appliance ensure that it can be lowered by approx 25 mm to allow for disconnection when servicin...

Page 14: ...ed ON 3 Ensure that all hot water outlets are closed 4 Remove the screw and sealing ring from the burner pressure test point and attach a pressure gauge 5 Fully depress and hold the ON button and repe...

Page 15: ...crew and sealing ring 11 Relight the pilot Turn ON a hot water outlet and check for gas soundness at the pressure test point 12 Turn OFF the hot water outlet Slide the bottom cover onto the appliance...

Page 16: ...s situated above the cap screw in the water governor body Fig 23 The screw is factory set 2 full turns out anti clockwise from the fully in position Turning the screw clockwise delays the ignition ant...

Page 17: ...unction Use this chart in conjunction with the detailed procedures on the following pages Start Descale Heating Unit 6 17 Remove Piezo Unit 6 1 General Access Main Burner 6 2 Thermocouple Electrode 6...

Page 18: ...urner a Turn OFF the gas and water supplies at the service cocks b Slide out the bottom cover c Remove the 3 fixing screws and pull off the outer case d Remove 4 fixing screws from the burner assembly...

Page 19: ...filter disconnect the union nut and carefully lift up the pilot tube taking care not to lose the pilot injector c On re assembly ensure the pilot injector is correctly seated taper side down and that...

Page 20: ...n 6 6 Pilot Viewing Glass Seal a Complete steps a b and c of Section 6 2 b The viewing glass and seal are fixed to the inside of the outer case by 2 metal tabs Bend back the tabs and remove the glass...

Page 21: ...hot water outlet d Have a suitable container to hand Remove the drain screw from the water service cock and allow the water to drain e Close the hot water outlet 6 10 Water Governor a Gain general acc...

Page 22: ...ease l Remove both the brass washer and O ring from the top opening Clean the washer m Clean the top opening then pack with a silicone grease such as Dow Corning 111 Fit a new O ring and re fit the br...

Page 23: ...tion brackets g Re fit the water governor h Re connect the burner supply pipe j Test for gas soundness as follows Ensure the water service cock is in the OFF position this will ensure that water CANNO...

Page 24: ...n the thermostat flange and the retaining plate and that the drain hole in the spacer is at the bottom when relative to the whole appliance g Ensure the O ring is correctly seated within the thermosta...

Page 25: ...il water temperature is between 55 58 C WARNING Keep the throttle body pointing away from your face and body when you turn the screw The spring adjuster spring and gland housing will eject from the bo...

Page 26: ...rt the heating unit on a suitable bench or table e Using rubber tube and acid resisting tanks assemble as shown in Fig 48 f Fill the upper container with a proprietary brand of descalent or a solution...

Page 27: ...cal gas supplier 1 Gas not turned on 2 Air in gas line 3 Incorrect pilot lighting procedure 4 Electrode lead not connected to the rear of the spark igniter 5 Incorrect spark gap 6 Current tracking to...

Page 28: ...lays the ignition anti clockwise advances the ignition The screw should be set 2 full turns out anti clockwise from the fully in position When correct the burner ignition should be smooth and quiet wh...

Page 29: ...rner ignition should be smooth and quiet when a hot water outlet is opened 6 Replace thermostat assembly Part No 10 13486 7 Descale regrease and replace O rings as necessary LOW WATER TEMPERATURE CONT...

Page 30: ...eal Part No 31 12299 are in good condition replace if necessary Ensure the outer case is correctly positioned 2 Re site the appliance IMPORTANT NOTE To ensure continued safe operation we recommend tha...

Page 31: ...Supplied By www heating spares co Tel 0161 620 6677 31 Part No 5000893 Short List of Spares 6 Short List Of Spares Fig 49...

Page 32: ...ermocouple Special Thermocouple Connection Special Interrupter Insert Electrode Assembly Pilot Injector Special Piezo Unit RV 1174 Igniter IGN Button Starter ON Button Assembly Stop OFF Button Assembl...

Page 33: ...FILL cycle are NOT suitable for use with instantaneous water heaters 3 Washing machines which use a MIXING THERMOSTAT which attempts to mix both hot and cold water supplies to obtain a pre determined...

Page 34: ...ne Handsworth Birmingham B21 8LE Tel 44 0 121 553 7021 Some mixer valves may not require the fitting of a water governor advice must be sought from the shower manufacturer 3 The nearer the shower is t...

Page 35: ...o the shower system to facilitate servicing ADJUSTING THE SYSTEM Two methods are suggested for setting the system depending on whether a thermostatic or non thermostatic shower mixer is used NON THERM...

Page 36: ...escriptions and illustrations provided in this leaflet have been carefully prepared but we reserve the right to make changes and improvements in our products which may affect the accuracy of the infor...

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