Table of Contents
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User, Installation & Service
Instructions
About the Heater
See inside cover for models covered by these instructions.
This is a non spouted, gas fired, multipoint water heater.
For use with Natural Gas (G20) Only at 20 mbar and for use in GB/IE Only.
About Safety
The Gas Safety (Installation and Use) Regulations.
'' In your own interest, and that of 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 be in accordance with the User, Installation & Servicing Instructions and the
rules in force.
Polythene bags used for packaging are a potential hazard to babies and young children and
MUST BE CAREFULLY DISPOSED OF IMMEDIATELY.
Leave these instructions with the user for use on future calls.
Supplied By www.heating spares.co Tel. 0161 620 6677
Multipoint
Water Heater
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Related Manuals for Main Mersey Super
Summary of Contents for Main Mersey Super
- Page 1 User, Installation & Service Multipoint Instructions Water Heater About the Heater See inside cover for models covered by these instructions. This is a non spouted, gas fired, multipoint water heater. For use with Natural Gas (G20) Only at 20 mbar and for use in GB/IE Only. About Safety The Gas Safety (Installation and Use) Regulations.
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Page 2: Table Of Contents
User Instructions - For the User & Installer Models covered by these Instructions. User Information...........3 To Light the Pilot...........4 Mersey Super - G.C. No. 52 476 38 To Obtain Hot Water..........4 Medway Super - G.C. No. 52 476 39 Thames - G.C. No. 52 476 40 To Shut Down the PIlot.........4... -
Page 3: User Information
Installers section) are maintained at all times. the flow of water. • Please take time to read through these The Mersey Super is Not suitable for use instructions to familiarise yourself with the water with a shower system. heater. -
Page 4: To Light The Pilot
• If the heater is not going to be used for long periods press the OFF button The gas supply to both the pilot and main burner will now be shut off. • Check through the pilot viewing window that the pilot flame is extinguished. -
Page 5: To Alter The Settings
Thames This appliance has a temperature selector with the widest adjustment range of any Main Instantaneous Water Heater. The actual temperature selected in the lower part of the range will be subjected to the effect of seasonal temperature variations in the mains supply. -
Page 6: Care Of Your Appliance
Care of your Appliance Cleaning The outer casing is stoved enamel and should be cleaned with warm, soapy water. DO NOT USE ABRASIVE POWDERS SINCE THEY WILL SCRATCH THE ENAMEL SURFACE. Frost Precaution In frosty weather the pilot should be left alight. If the house is to be unoccupied for several days the heater should be drained. -
Page 7: Dimensions, Clearances & Product Specificatin
For ease of servicing, allow as much clearance as possible below the appliance. If the appliance is to be installed in a cupboard, DO NOT USE THE CUPBOARD FOR STORAGE. Mersey Super Note: All models - the data badge will be visible after removing the outer case. - Page 8 Product Specification Models Heat Input figures quoted as gross. Mersey Super Medway Super Thames Output 22.7 23.3 23.3 Input 30.3 30.3 30.3 Gas rate m∆/h 2.91 2.91 2.91 Burner Pressure** mbar 12.5 12.5 12.5 Burner Injector Size Pilot Injector Size 0.27...
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Page 9: Installation Requirements
2. Installation Requirements • Codes of Practice risk to health other than normal hygiene practices would demand regarding washing before eating etc. Deposits found on or below a heat exchanger that has been in use The appliance is suitable only for installation in GB and could contain lead oxide. -
Page 10: Siting The Flue Terminal
Likely flue positions requiring a flue terminal guard Fig. 8 • Siting the Flue Terminal The following guidelines indicate the general Terminal Position with Minimum Distance (mm) requirements for siting balanced flue terminals. For IE, refer to I.S. 813 "Domestic Gas Installation". Natural Draught Balanced Flue For GB recommendations are given in BS 5440 Pt. -
Page 11: Installation
3. Installation 3.1 Location 1. 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 12: Gas Connection
813 "Domestic Gas Installations". 1. Assemble the filter, ‘O’ ring and inlet tail to the gas inlet. 2. Depending on whether the main supply pipe is to be routed vertically or horizontally to the appliance, connect the gas service cock (stamped 'GAS') either directly to the gas inlet tail or within the supply pipe. -
Page 13: Water Connections
Note: The inlet tail need not be used as a vertical supply can be routed directly onto the water inlet. 2. Depending on whether the main supply pipe is to be routed vertically or horizontally to the appliance, connect the water service cock either directly to the water inlet tail or within the supply pipe. -
Page 14: Commissioning
MUST BE replaced with great care NOW, before any attempt is made to light the burners. TO ALLOW THE MAIN BURNER TO IGNITE WITHOUT THE CASE IN POSITION IS A HAZARD. 1. Refit the outer case ensuring it is correctly seated then secure (3 screws). - Page 15 Note: Check the gas rate check, the gas consumption after 3 minutes running should be approximately 2.91 m /hr (102.8 ft /hr). 9. Turn the temperature selector spindle (if fitted) from right to left , there will be a noticeable change in the outlet temperature.
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Page 16: Servicing
5. Servicing Note: In hard water areas, scale may build up on the push rod, seals and on the underside of the diaphragm housing. They require regular descaling regreasing. 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... -
Page 17: Replacement Of Parts
Turn them off in sequence starting with the tap Remove Piezo Unit - 6.1 at the lowest level. General Access/Main Burner - 2. When replacing parts, re- assemble in reverse order unless otherwise stated. Thermocouple & Electrode - 6.3... -
Page 18: Piezo Unit
Push the bottom cover and with slight adjustment, the selector will positively locate on the spindle. Fig. 24 6.2 General Access/Main Burner a. Turn OFF the gas and water supplies at the service cocks. b. Slide out the bottom cover. -
Page 19: Thermocouple & Spark Electrode
6.3 Thermocouple & Spark Electrode a. Gain general access - See 6.2. b. Disconnect the nut securing the thermocouple to the interrupter at the chassis base. c. Disconnect the electrode lead from the back of the piezo unit, pull the lead up through the grommet and remove. -
Page 20: Pilot Viewing Glass & Seal
h. 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 21: To Drain The Appliance
6.8 To Drain the Appliance a. Ensure that the gas service cock is turned OFF. b. Ensure that the water service cock is turned OFF. c. Open a 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. -
Page 22: Push Rod
Insert the 8 screws and secure finger tight. Fully tighten all 8 screws in the order shown. Clean, regrease and re-fit the push rod or replace with a new one. Mersey Super Medway Super Thames Fig. 38 Replacement Of Parts Part No. -
Page 23: Automatic Valve
6.11 Automatic Valve and Burner Manifold Complete a. Gain general access - see 6.2. b. Drain the appliance - see 6.8. c. Remove the water governor - see 6.10. d. Release the union above the flame safety device. Do not lose the 'O' ring. e. -
Page 24: Thermostat Assembly - Thames
6.13 Thermostat Assembly - Thames a. Gain general access - see 6.2. b. Drain the appliance - see 6.8. c. Remove the thermostat phial from its pocket. CAUTION: To prevent possible damage to the heating unit, release the split tubing nut with a suitable spanner whilst supporting the phial housing hexagon boss with a second spanner. -
Page 25: Heating Unit - Thames
Descale/Regrease & Recalibrate WARNING: Keep the throttle body pointing away from your face and body when you turn the screw. The spring adjuster, spring h. Remove the 2 screws securing the r and gland housing will eject from the body with a lot of force. etaining plate to the throttle body. -
Page 26: Heating Unit - Mersey/Medway
6.16 Heating Unit - Mersey/Medway a. Gain general access - See 6.2. b. Drain the appliance - See 6.8. c. Remove the 2 screws securing the energy cut-off device to the heating unit (located top front left). d. Disconnect the 2 unions. e. -
Page 27: Fault Finding
SOLUTION PILOT WILL NOT LIGHT 1. Gas not turned on. 1. Turn on the gas at the gas service cock and/or the main gas line. 2. Air in gas line. 2. Purge the air line by depressing and holding the centre ON button, this may take 2-3 mins. - Page 28 1. Clean the debris from the filter. 2. Heat exchanger blocked with 2. Descale or replace - Part No. lime. 10/17558. 3. Loss of service water main 3. Contact your Local Water pressure. Authority. HIGH WATER FLOW RATE LOW WATER TEMPERATURE HIGH WATER TEMPERATURE 1.
- Page 29 Part No. 19/12690. Also clean the lint filter located at the base of pilot tube. 4. Burner aeration ports and main 4. Carefully clean the burners with flame ports blocked. a vacuum cleaner. Part No. 5000893 Fault Finding Supplied By www.heating spares.co Tel.
- Page 30 POSSIBLE CAUSE SOLUTION SYMPTOM SMELL COMBUSTION 1. Faulty case or terminal seal. 1. Check that the outer case seal - PRODUCTS Part No. 10/17501and terminal seal - Part No. 31/12299 are in good condition, replace if necessary. Ensure the outer case is correctly positioned.
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Page 31: Short List Of Spares
6. Short List Of Spares Fig. 49 Short List of Spares Part No. 5000893 Supplied By www.heating spares.co Tel. 0161 620 6677... - Page 32 Energy Cut-Off Device Assembly - includes grommets 10/17792 285 942 Pressure Relief Valve Assembly - Medway Super/Thames 10/17866 285 956 Pressure Relief Valve Assembly - Mersey Super 10/17865 Part No. 5000893 Short List of Spares Supplied By www.heating spares.co Tel. 0161 620 6677...
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Page 33: Washing Machine Information
Washing Machine Information This Mersey Super, Medway Super and Thames will work in conjunction with most automatic washing machines (pressure filled type). 1. The washing machine must incorporate a INSTALLATION DIAGRAM FOR pressure level switch to control the amount of... -
Page 34: Shower Information
The the shower system. Mersey Super is not suitable for use with a shower system. Kohler Mira Limited [www.mirashowers.com] Shower systems fed with an instantaneous water heater... - Page 35 WARNING: DO NOT ATTEMPT TO ALTER THE ADJUSTING THE SYSTEM TEMPERATURE BY ADJUSTING THE WATER HEATER TEMPERATURE SELECTOR - THIS Two methods are suggested for setting the system depending MUST ALWAYS BE SET AT ITS HOTTEST on whether a thermostatic or non-thermostatic shower mixer POSITION WHEN THE SHOWER IS IN USE.
- Page 36 5000893 - Iss. 06 Publication No. (01/2003) General Enquiries (GB) Mersey Super - Medway Super - 08706 060 780 Thames Tel. All loose items have been packed by the Packer identified below Technical (GB) 08706 049 049 Tel. Packers Stamp No.