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  5. User, Installation & Servicing Instructions

Main Medway Super User, Installation & Servicing Instructions

Manual is about: Multipoint Water Heater

Summary of Medway Super

  • Page 1

    Supplied by www.Heating spares.Co tel. 0161 620 6677 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 (installat...

  • Page 2: Contents

    Supplied by www.Heating spares.Co tel. 0161 620 6677 2 part no. 5000893 contents contents user instructions - for the user & installer user information...................................................3 to light the pilot...................................................4 to obtain hot water.........

  • Page 3

    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 com...

  • Page 4: Light The Pilot

    Supplied by www.Heating spares.Co tel. 0161 620 6677 4 part no. 5000893 read through before lighting or operating light the pilot fig. 2 to light the pilot fig. 1 caution: should the pilot flame ever be found to have gone out, press the off button and wait at least 5 minutes for any residual gas to ...

  • Page 5: To Alter The Settings

    Supplied by www.Heating spares.Co tel. 0161 620 6677 5 part no. 5000893 to alter the settings fig. 4 fig. 5 to alter the settings medway super the temperature selector fitted to this appliance gives access to a wide range of outlet temperatures. Because the temperature of the water in the mains supp...

  • Page 6: Care of Your Appliance

    Supplied by www.Heating spares.Co tel. 0161 620 6677 6 part no. 5000893 care of your appliance this is the end of the user instructions, page 7 onwards are for the installers use only. Care of your appliance servicing as with all gas appliances, to ensure long life and safe, trouble free operation, ...

  • Page 7

    Supplied by www.Heating spares.Co tel. 0161 620 6677 7 part no. 5000893 1. Dimensions, clearances & product specification dimensions, clearances & product specification minimum clearances for ease of servicing, allow as much clearance as possible below the appliance. If the appliance is to be instal...

  • Page 8: Product Specification

    Supplied by www.Heating spares.Co tel. 0161 620 6677 8 part no. 5000893 dimensions, clearances & product specification models mersey super medway super thames output kw 22.7 23.3 23.3 input kw 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 mm...

  • Page 9

    Supplied by www.Heating spares.Co tel. 0161 620 6677 9 part no. 5000893 2. Installation requirements • codes of practice the appliance is suitable only for installation in gb and ie and should be installed in accordance with the rules in force. In gb, the installation must be carried out by a corgi ...

  • Page 10

    Supplied by www.Heating spares.Co tel. 0161 620 6677 10 part no. 5000893 installation requirements fig. 8 • siting the flue terminal the following guidelines indicate the general requirements for siting balanced flue terminals. For gb recommendations are given in bs 5440 pt. 1. For ie recommendation...

  • Page 11: 3. Installation

    Supplied by www.Heating spares.Co tel. 0161 620 6677 11 part no. 5000893 installation fig. 11 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 washe...

  • Page 12

    Supplied by www.Heating spares.Co tel. 0161 620 6677 my99004a securing nuts & washers flue terminal sealing strip rear view of water heater sealing strip 12 part no. 5000893 installation fig. 13 7. Fit the flue terminal sealing strip (packed separately in the carton) into the recess around the flue ...

  • Page 13

    Supplied by www.Heating spares.Co tel. 0161 620 6677 13 part no. 5000893 installation fig. 14 fig. 15 3.3 water connections important: flush out all foreign matter from the supply pipe before connecting to the service cock. 1. Assemble the filter, olive and inlet tail to the water inlet. Note: the i...

  • Page 14: 4. Commissioning

    Supplied by www.Heating spares.Co tel. 0161 620 6677 14 part no. 5000893 4. Commissioning complete the installation fig. 16 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 n...

  • Page 15

    Supplied by www.Heating spares.Co tel. 0161 620 6677 15 part no. 5000893 commissioning fig. 20 note: check the gas rate check, the gas consumption after 3 minutes running should be approximately 2.91 m 3 /hr (102.8 ft 3 /hr). 9. Turn the temperature selector spindle (if fitted) from right to left , ...

  • Page 16: 5. Servicing

    Supplied by www.Heating spares.Co tel. 0161 620 6677 16 part no. 5000893 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 may require regular descaling and regreasing. Operate the appliance noting any faul...

  • Page 17: 6. Replacement of Parts

    Supplied by www.Heating spares.Co tel. 0161 620 6677 17 part no. 5000893 replacement of parts 6. Replacement of parts 1. When refilling, if water has been drained from the system, turn on all hot taps to purge air from the system. Turn them off in sequence starting with the tap at the lowest level. ...

  • Page 18

    Supplied by www.Heating spares.Co tel. 0161 620 6677 18 part no. 5000893 6.1 piezo unit it will not be necessary to remove the outer case. A. Slide out the bottom cover. B. Disengage the electrode lead from the piezo unit. C. Remove or loosen and pull aside the spark button retainer, taking care not...

  • Page 19

    Supplied by www.Heating spares.Co tel. 0161 620 6677 19 part no. 5000893 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...

  • Page 20

    Supplied by www.Heating spares.Co tel. 0161 620 6677 20 part no. 5000893 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 ...

  • Page 21

    Supplied by www.Heating spares.Co tel. 0161 620 6677 21 part no. 5000893 6.9 pressure relief valve a. Gain general access - see 6.2. B. Drain the appliance - see 6.8. C. Unscrew the valve and discard. D. Screw in new valve. 6.8 to drain the appliance a. Ensure that the gas service cock is turned off...

  • Page 22

    Supplied by www.Heating spares.Co tel. 0161 620 6677 22 part no. 5000893 replacement of parts fig. 38 f. Remove 2 screws above the chassis base securing the governor to the automatic valve. G. Remove 3 screws above the chassis base securing the governor to the chassis base. H. Carefully withdraw the...

  • Page 23

    Supplied by www.Heating spares.Co tel. 0161 620 6677 23 part no. 5000893 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 ...

  • Page 24

    Supplied by www.Heating spares.Co tel. 0161 620 6677 24 part no. 5000893 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 tu...

  • Page 25

    Supplied by www.Heating spares.Co tel. 0161 620 6677 25 part no. 5000893 descale/regrease & recalibrate h. Remove the 2 screws securing the r etaining plate to the throttle body. I. Strip down the throttle assembly, descale and regrease using a silicone grease such as dow corning 111. Replace 'o' ri...

  • Page 26

    Supplied by www.Heating spares.Co tel. 0161 620 6677 26 part no. 5000893 6.17 descaling the heating unit 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 fr...

  • Page 27: 5. Fault Finding

    Supplied by www.Heating spares.Co tel. 0161 620 6677 27 part no. 5000893 fault finding symptom possible cause solution 1. Turn on the gas at the gas service cock and/or the main gas line. 2. Purge the air line by depressing and holding the centre on button, this may take 2-3 mins. 3. Follow the ligh...

  • Page 28

    Supplied by www.Heating spares.Co tel. 0161 620 6677 28 part no. 5000893 solution possible cause symptom pilot lit but main burner will not light on water flow 1. Gas inlet pressure low. 2. Low water flow caused by blocked water filter. 3. Faulty diaphragm. Will also cause a high water rate. 4. Auto...

  • Page 29

    Supplied by www.Heating spares.Co tel. 0161 620 6677 29 part no. 5000893 symptom possible cause solution 3. Faulty diaphragm. Will also cause a high water rate. 4. Automatic gas valve push rod sticking. May also cause a high water rate. 5. Slow ignition screw incorrectly set. Will also cause a high ...

  • Page 30: Important Note

    Supplied by www.Heating spares.Co tel. 0161 620 6677 30 part no. 5000893 symptom possible cause solution symptom unexplained shutdown of the appliance this appliance contains an energy cut-off device which reacts when the water in the heat exchanger exceeds the anticipated temperature limit. Althoug...

  • Page 31: 6. Short List of Spares

    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

    Supplied by www.Heating spares.Co tel. 0161 620 6677 32 part no. 5000893 short list of spares drg. Ref. G.C. Part no. Description. No. Off. Makers part no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 284 957 285 907 285 910 285 908 285 909 285 513 285 678 285 930 285 929 397 688 285 931 285 6...

  • Page 33: Washing Machine Information

    Supplied by www.Heating spares.Co tel. 0161 620 6677 33 part no. 5000893 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 pressure level switch to con...

  • Page 34: Shower Information

    Supplied by www.Heating spares.Co tel. 0161 620 6677 34 part no. 5000893 shower information the medway super and thames will work in conjunction with many modern showers or bath/shower mixers. The mersey super is not suitable for use with a shower system . Shower systems fed with an instantaneous wa...

  • Page 35

    Supplied by www.Heating spares.Co tel. 0161 620 6677 35 part no. 5000893 warning: do not attempt to alter the temperature by adjusting the water heater temperature selector - this must always be set at its hottest position when the shower is in use. 6. When non-thermostatic type mixer valves are set...

  • Page 36

    Supplied by www.Heating spares.Co tel. 0161 620 6677 mersey super - medway super - thames all loose items have been packed by the packer identified below packers stamp no. B a x i p o t t e r t o n brownedge road, bamber bridge preston, lancashire. Pr5 6sn www.Potterton.Co.Uk publication no. 5000893...