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21

PROBLEM 

CAUSE

ACTION

Even though temp. 
adjusting knob is 
turned to“HOT” 
Position, heated 
water is not hot 
enough due to too 
high a water flow rate.

Water regulator is faulty. 
Faulty diaphragm in 
water control body 
assembly. 
Incorrect water control 
assembly fitted. 
Hot and cold water pipes crossed. 

Inspect and clean. 
Replace with new one. 

Replace with correct type. 

Check, re-connect correctly. 

Even though temp. 
adjusting knob is 
turned to “WARM” 
position, heated 
water is too hot due 
to a low water flow rate. 

Water regulator is faulty. 
Water pressure is insufficient. 

Water filter is clogged. 
Incorrect water control 
assembly fitted. 
Heat exchanger restriction 
(damage or limescale)

Inspect and replace it. 
Check water pressure at inlet to 
heater. Check for blockages in 
supply line or hot pipes and taps. 
If using a pump, check pump for faults. 
Clean. 
Replace with correct type. 

Replace or descale. 

Same as the above 
conditions due to 
long flame.

Too much volume of gas flow/ 
excessive gas pressure. 

Check gas pressure at the heater 
and adjust regulator within the 
correct range.

Main burner and 
pilot flame goes out 
during operation. 

Combustion spillage safety device
has activated.

None or insufficient ventilation fitted.

Blocked ventilation

Insufficient gas pressure.

Check flue for correct fitting, blockages
or any damage to flue pipe or terminal.
Check for spillage due to the effects of any

fans or adverse weather conditions.

Check the ventilation, referring to the 
appropriate standard.

Unblock ventilation, (advise the importance

of ventilation).

Check operating pressure’s at the 
burner and inlet pressure test points. Check 
the whole gas supply line for blockages

including the gas filter on the heater.

Check the gas regulator.

Main burner only 
goes out during 
operation.

Gas pressure (flow rate) is 
insufficient. 

Gas supply line is too small in 
diameter. (Insufficient gas 
supply). 
Partly blocked main burner 
injectors. 
Low water pressure and 
reduced flow rate due to other 
cold water outlets in use at 
same time as heater. 
Water filter blocked. 
Diaphragm faulty. 

Check gas cylinder regulator for 
faults and the supply pipe for 
blockages. 
Enlarge the gas supply pipe. 

Clean them. 

Check water pressure at inlet with 
water heater in operation. 
Plumbing modifications may be 
necessary to installation. 
Clean or replace. 
Replace diaphragm. 

Summary of Contents for D-61B

Page 1: ...10005246 03 MORCO MODELS D 61B D 61E AND G11E ...

Page 2: ......

Page 3: ...OUR LES UTILISATEURS 24 B 2 INSTRUCTIONS TECHNIQUES POUR L INSTALLATEURS 27 B 2 1 DONNÉS TECHNIQUES 27 B 2 2 NORMES D INSTALLATION 32 B 2 3 ENTRETIEN DE L APPAREIL 36 B 2 4 SYMBÔLES 38 B 2 5 DÉPANNAGE 38 B 2 6 GARANTIE 42 C NEDERLANS C 1 INSTRUCTIES VOOR GEBRUIKERS 44 C 2 TECHNISCHE INSTRUCTIES VOOR INSTALLATIETECHNICI 47 C 2 1 TECHNISCHE INFORMATIE 47 C 2 2 INSTRUCTIES VOOR DE INSTALLATIE 52 C 2 ...

Page 4: ... THIS APPLIANCE PLEASE READ THESE INSTRUCTIONS THOROUGHLY ALWAYS RETAIN THE INSTRCTIONS FOR FUTURE USE GAS SAFETY INSTALLATION AND USE REGULATIONS 1998 IN THE INTEREST OF SAFETY IT IS THE LAW THAT ALL GAS APPLIANCES ARE INSTALLED AND SERVICED BY A COMPETENT PERSON IN ACCORDANCE WITH THE ABOVE REGULATIONS BUILDING REGULATIONS CODES OF PRACTICE AND BYELAWS OF THE LOCAL WATER UNDERTAKING FAILURE TO C...

Page 5: ...ns that there is air in the gas pipes In this case allow plenty of time for the pipes to be cleared of air with the gas control knob at the pilot setting Where there are long gas pipe runs it may take up to 3 minutes PREPARING THE HEATER FOR USE Once the pipes are free of air and the pilot is alight wait about 10 seconds for the safety valve mechanism to be activated the appliance is ready for use...

Page 6: ...down in the following way Turn off the mains water inlet stopcock Turn temperature control knob fully anticlockwise to minimum setting Turn on all hot and cold water taps Open all hot and cold drain cocks on the installation Please refer to your caravan owners handbook for the location of all drain cocks Disconnect the mains water inlet stopcock from the caravan pipework this will stop water refil...

Page 7: ...r tamper or adjust with any pre sealed unit There is a danger of burning yourself if you touch the area in or around the pilot window We recommend that you avoid touching this area Do not cover or use the heater for drying purposes or use the heater compartment for storage of any goods especially flammable liquids The appliance has a device to detect that combustion gases are removed correctly via...

Page 8: ... 50 456 45 G11E 573 266 190 236 90 589 97 120 350 50 344 45 D61B D61E SELECTOR SETTING MODELS OPEN CLOSED Water flow T Water flow T D61B D61E 5 4 litres min 25ºC 2 7 litres min 50ºC G11E 11 litres min 25ºC 5 5 litres min 50ºC SPECIFICATIONS Available calorific power Output in terms of a p c i over 85 HOT WATER DELIVERY The figures quoted are for the appliance at normal operating pressure at minimu...

Page 9: ...5 mm Flueway D61B and D61E ø 90 mm G11E ø 110 mm PIPE WORK DIAMETERS AND CONNECTION SIZES BURNER PRESSURE 9 TIPE OF GAS Standarised gases G11E D61B D61E Butane 27 5 mbar 29 mbar Propane 36 3 mbar 36 9 mbar Natural gas 16 4 mbar 19 4 mbar BURNT GAS FLOW AND SMOKE TEMPERATURES MODELS G11E D61B D61E Flow g s 13 7 8 Temperature 160ºC 137ºC AIR FLOW NECESSARY FOR THE COMBUSTION TIPE OF GAS Standarised ...

Page 10: ... when the ambient temperature of the water supply is high An automatic water flow regulator to provide a constant flow rate at the tap at varying pressures Min supply pressure 1 0b Max supply pressure 10 0b A water temperature selector A heat exchanger made from pure electrolytic copper A draught diverter hood OPERATION Once the appliance has been turned on following the procedure given in section...

Page 11: ... Cat I3 30mbar Cat I3B P G 31 37mbar Type B11BS Qn hi 11 1 kW Qm hi 6 6 kW R Fab 20 26210 Pn 9 4 kW SERIAL Nº Pw 10 bar Cat I3 I3B P Country Pays GB FR IE IT ES BE NL USE ONLY IN WELL VENTILATED ROOMS NOT TO BE INSTALLED IN BATHROOMS MORCO PRODUCTS LTD Morco House Riverview Road Beverley HU17 OLD ENGLAND MORCO INSTANTANEOUS GAS WATER HEATER CE 0099 Mod Nº G11E NAT 99BP819 Gas Type G 20 20mbar Cat ...

Page 12: ...TOR 11 MAIN BURNER GAS VALVE 12 MAGNETIC VALVE 13 HI LO GAS SETTING 14 INTER IGNITION VALVE 15 PILOT VALVE 16 BURNER JET 17 MAIN BURNER BAR 18 MAIN GAS VALVE BODY 19 SPINDLE ASSEMBLY 21 PILOT INJECTOR 22 SPARK ELECTRODE 23 THERMOCOUPLE 24 PILOT BURNER 25 MAIN BURNER 26 HEAT EXCHANGER 27 DRAUGHT DIVERTER HOOD 28 PILOT SECURING NUT 29 C P D S D SPILAGE SAFETY DEVICE 12 ...

Page 13: ...Boats BS EN 1949 Installation of LPG System for Habitational Purposes in Leisure Accommodation Vehicles EN 721 Leisure Accommodation Vehicles Ventilation Requirements Location The water heater requires a plentiful supply of fresh air for correct operation Fixed ventilators or air inlets should not be obstructed Do not install the water heater in a location where incomplete combustion is foreseeabl...

Page 14: ...s device is to detect thermally if products of combustion are not being removed to the outside air by the flue due to adverse weather conditions causing a down draught down the flue blockage in the flue or problems with the ventilation supplying the air for combustion This device should never be deactivated or removed as this would compromise the safety of the occupants in the event of flue gas sp...

Page 15: ...meet the specifications given on the appliances technical specification plate Take special care to ensure that the water and gas pressures are correct Also make sure that the bottle regulator is large enough to allow sufficient gas to be supplied to the appliance bearing in mind the gas consumption of other appliances on the same gas supply FIXING THE APPLIANCE To do this you only need to remove t...

Page 16: ...ot exceed 2 5 mb below that specified in this manual Check the burner pressure with the heater at full load at the test nipple located on the left hand side of the main gas valve body below the main burner These pressures must at least be equal those specified in this manual in order to achieve the desired performance specified in this manual Check the flue for spillage close all doors and windows...

Page 17: ...g purposes Note Defurring descaling should be carried out using proprietary agent or dilute hydrochloric acid It is recommended to circulate the descaling fluid around the heat exchanger in order to speed up the process Depending on the amount of scale build up and the strength of the descaling solution used the time to totally descale will vary MAINTENANCE MINIMUM ANNUAL MAINTENANCE Gas water hea...

Page 18: ...me should be a stable blue coloured cone shape To clean the pilot burner proceed as follows Turn off the gas supply remove the front cover Remove the pilot injector by slackening the supply pipe nut first and unscrewing the pilot injector from the pilot burner Remove the contamination from within the pilot burner using wire and blow through to remove any further debris Replace the pilot injector e...

Page 19: ...tic valve is faulty Faulty thermocouple The main control button is not fully depressed C P D S D is faulty Clean or replace pilot jet Re position thermocouple Check thermocouple for tightness Replace with new one Replace with new one Press it down hard and hold that position for about 10 seconds Replace it When main burner ignites the pilot flame becomes much smaller Insufficient gas pressure Chec...

Page 20: ...burner and clean as necessary using stiff brush Check gas pressure at the heater and adjust regulator to the correct range Clean the heat exchanger On ignition the burner makes an unusual noise Flash back The position between pilot burner and main burner is not close enough Gas pressure flow rate is insufficient Gas supply line is too small in diameter Insufficient gas supply Partly blocked main b...

Page 21: ...ct range Main burner and pilot flame goes out during operation Combustion spillage safety device has activated None or insufficient ventilation fitted Blocked ventilation Insufficient gas pressure Check flue for correct fitting blockages or any damage to flue pipe or terminal Check for spillage due to the effects of any fans or adverse weather conditions Check the ventilation referring to the appr...

Page 22: ...ntamination of O rings Clean or replace Soot deposits on front cover and smell of fumes Blocked burner venturi and sooted blocked heat exchanger Remove burner and heat exchanger and clean thoroughly A 2 6 WARRANTY The water heater is guaranteed against manufacturing defects for one year from first commissioning However the guarantee is subject to proof of commissioning in accordance with the gas s...

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