Potterton Thames Installation And Servicing Instructions
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Potterton Thames Installation And Servicing Instructions

Potterton Thames Installation And Servicing Instructions

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Supplied by HeatingSpares247.com
G.C. NO. 52 476 40
NON SPOUTED MULTIPOINT MODEL
"In your own interest, and that of safety, it is law that all gas appliances are installed by competent persons, in ac with the
Installation must be in accordance with the Building Regulations, Byelaws of the Water Undertaking, and LE.I Regulations. It
should be in accordance also with any relevant requirements of the Local Gas Region and Local and the relevant
recommendations of the following British Standard Codes of practice: BS 6891, BS 5440:1:2 and BS 5546.
INSTALLATION AND SERVICE
INSTRUCTIONS
Thames
Gas Fired Water Heater
THE GAS SAFETY (INSTALLATION AND USE) REGULATIONS 1984.
above regulations. Failure to install appliances correctly could lead to prosecution."
LEAVE THESE INSTRUCTIONS WITH THE USER FOR USE ON FUTURE CALLS
FOR USE WITH NATURAL GAS
IMPORTANT
PLEASE READ THIS BOOK
BEFORE INSTALLING,
OPERATING OR
SERVICING THIS
APPLIANCE.

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  • Page 1 Supplied by HeatingSpares247.com INSTALLATION AND SERVICE INSTRUCTIONS Thames Gas Fired Water Heater G.C. NO. 52 476 40 NON SPOUTED MULTIPOINT MODEL FOR USE WITH NATURAL GAS THE GAS SAFETY (INSTALLATION AND USE) REGULATIONS 1984. “In your own interest, and that of safety, it is law that all gas appliances are installed by competent persons, in ac with the above regulations.

  • Page 2: Energy Cut-Off Device

    VENTILATION Being a room sealed appliance, the Thames does not require an air vent in the room or space in which it is installed. Where this appliance is installed in a compartment, air vents to the compartment at both high and low levels, should be provided for cooling.

  • Page 3: Technical Specifications

    Supplied by HeatingSpares247.com 2. TECHNICAL SPECIFICATIONS - Page 3 Finish White stoved paint with contrasting chassis Weight Packed 20.9 kg. (46.0 lb.) Weight without Water 17.7 kg. (39.0 lb.) Weight with Water 18.5 kg. (40.7 lb.) Water Capacity 0.75 litre (0.17 gall.) Input 30.3 kW (103,000 Btu/h.) Maximum Output...

  • Page 4: Installation

    Supplied by HeatingSpares247.com 3. INSTALLATION - Page 4 A. LOCATION If the appliance is to be fixed to a suitable existing terminal first isolate and remove the old appliance. Leave the flue terminal in place. Retain the fixing nuts and washers. Make good any damage to the brickwork or plaster around the terminal.

  • Page 5: Gas Connection

    Supplied by HeatingSpares247.com Installation - Page 5 Fit the flue terminal sealing strip (packed separately in the carton) into the recess around the flue aperture in the back of the appliance. Lift the appliance into position, locating the flue outlet into the circular duct on the flue terminal.

  • Page 6: Water Connections

    Supplied by HeatingSpares247.com Installation - Page 6 C. WATER CONNECTIONS IMPORTANT: Flush out all foreign matter from the supply pipe before connecting to the service cock. Assemble the filter, olive and inlet tail to the water inlet. NOTE: The inlet tail need not be used as a vertical supply can be routed directly onto the water inlet.
  • Page 7 Supplied by HeatingSpares247.com 4. COMMISSIONING - Page 7 WARNING: The outer case of this appliance is not merely a cosmetic device. It is a functioning component in the air supply to the burner and MUST BE replaced with great care NOW, before any attempt is made to light the burners.
  • Page 8 Supplied by HeatingSpares247.com COMMISSIONING - Page 8 NOTE: If a gas rate check is required, the gas consumption after 3 minutes running should be approximately 48.5 1/mm (1.7 ft³/min). Turn the temperature selector spindle from right to left (‘5’ to ‘1’), there will be a noticeable change in the outlet temperature.
  • Page 9 Supplied by HeatingSpares247.com Servicing - Page 9 Operate the appliance noting any faults in the component units. Carry out the servicing procedure then correct any other faults by reference to ‘Replacement of Parts’, in which section you will find details of how to dismantle and reassemble the following detailed components.

  • Page 10: Replacement Of Parts

    Supplied by HeatingSpares247.com 6. REPLACEMENT OF PARTS - Page 10 IMPORTANT: THE FOLLOWING WORK SHOULD ONLY BE CARRIED OUT BY A COMPETENT SERVICE ENGINEER. E.G. BRITISH GAS OR CORGI REGISTERED PERSONNEL. IF WATER IS DRAINED FROM THE SYSTEM DURING SERVICING, TURN ON ALL HOT TAPS TO PURGE AIR FROM THE WATER SYSTEM.

  • Page 11: Piezo Unit

    Supplied by HeatingSpares247.com Replacement of Parts - Page 11 6.1. PIEZO UNIT It will NOT be necessary to remove the outer case. Slide out the bottom cover. Disengage the electrode lead from the piezo unit. Remove or loosen and pull aside the spark button retainer, taking care not to lose the shakeproof washer.
  • Page 12 Supplied by HeatingSpares247.com Replacement of Parts - Page 12 6.3. THERMOCOUPLE AND SPARK ELECTRODE Gain general access - see 6.2 Remove the fixing screw and bracket then lower the spark electrode. Disconnect the nut securing the thermocouple to the interrupter at the chassis base. Disconnect the electrode lead from the back of the piezo unit, pull the lead up through the grommet and remove.

  • Page 13: To Drain The Appliance

    Supplied by HeatingSpares247.com Replacement of Parts - Page 13 Test for gas soundness as follows:- Ensure the water service cock is in the OFF position. This will ensure water cannot flow and open the automatic valve. Turn ON the gas, purge and light the pilot, this will pressurise the burner supply pipe.
  • Page 14 Supplied by HeatingSpares247.com Replacement of Parts - Page 14 Remove 2 screws above the chassis base securing the governor to the automatic valve. Remove 3 screws above the chassis base securing the governor to the chassis base. Carefully withdraw the governor complete with pressure relief valve, TAKE CARE NOT TO BEND THE PUSH ROD.

  • Page 15: Thermostat Assembly

    Supplied by HeatingSpares247.com Replacement of Parts - Page 15 6.8. AUTOMATIC VALVE AND BURNER MANIFOLD COMPLETE Gain general access - see 6.2. Drain the appliance - see 6.6. Remove the water governor - see 6.7. Release the union above the flame safety device. Do not lose the ‘O’...
  • Page 16 Supplied by HeatingSpares247.com Replacement of Parts - Page 16 Re-Assemble as Follows:- Feed the thermostat phial through the hole in the chassis base. Re-fit the thermostat assembly and spacer to the throttle body, ensure that the spacer is correctly located between 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.
  • Page 17 Supplied by HeatingSpares247.com Replacement of Parts - Page 17 6.11. HEATING UNIT Gain general access - see 6.2. Drain the appliance - see 6.6. Remove the 2 screws securing the energy cut-off device to the heating unit (located top front left). Remove the thermostat phial from its pocket - See 6.9c.
  • Page 18 Supplied by HeatingSpares247.com Replacement of Parts - Page 18 6.13. PILOT VIEWING GLASS AND SEAL Complete steps a., b. and c. of section 6.2. 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 and seal.

  • Page 19: Fault Finding

    Supplied by HeatingSpares247.com 7. FAULT FINDING - Page 19 SYMPTON POSSIBLE CAUSE SOLUTION PILOT WILL NOT LIGHT Gas not turned on. Turn on the gas at the gas service cock and/or the main gas line. Air in gas line. Purge the air line by depressing and holding the centre ON button, this may take 2-3 minutes.
  • Page 20 Supplied by HeatingSpares247.com Fault Finding - Page 20 SYMPTON POSSIBLE CAUSE SOLUTION PILOT LIT BUT MAIN BURNER WILL Gas inlet pressure low. Call in your local British Gas NOT LIGHT ON WATER FLOW Region Low water flow caused by blocked Clean the debris from the filter.
  • Page 21 Supplied by HeatingSpares247.com Fault Finding - Page 21 SYMPTOM POSSIBLE CAUSE SOLUTION LOW WATER TEMPERATURE Continued.. Faulty diaphragm. Will also cause Replace the diaphragm assembly a high water rate. - Part No 10/17534. Automatic gas valve push rod Dismantle clean and regrease sticking.

  • Page 22: Short Spare Parts List

    Supplied by HeatingSpares247.com Fault Finding - Page 22 SYMPTOM UNEXPLAINED SHUT-DOWN OF THE APPLIANCE This appliance contains an Energy Cut-Off Device which reacts the water in the heat exchanger exceeds the anticipated temperature limit. Although it is intended to guard against failure of the automatic gas valve, it may be triggered inadvertently by other causes, especially during the summer months when the inlet water temperature is unusually high.
  • Page 23 Supplied by HeatingSpares247.com Short Spare Parts List - Page 23 Back Page...

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