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Unvented Hot Water Cylinder

39

USER GUIDE (4)

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Summary of Contents for Commercial 1000

Page 1: ...t Hot Water Cylinders 400L 2500L Important Please read understand all these instructions before commencing installation Please leave this manual with the customer for future reference Megaflo Commerci...

Page 2: ...mostat control schematics 12 Wiring Schematics 13 Limitations 14 Water supply 14 Installation Commissioning 15 General Installation 15 Cold Water Supply 15 Secondary circulation and De Stratification...

Page 3: ...er Fitting Regulations England and Wales or Water Byelaws Scotland THIS APPLIANCE CAN BE USED BY CHILDREN AGED FROM 8 YEARS AND ABOVE AND PERSONS WITH REDUCED PHYSICAL SENSORY OR MENTAL CAPABILITIES O...

Page 4: ...x 1 25 8 bar or 13 bar 1 5 2000 2500 2 1 5 6 bar or 5 10 bar 1 25 x 1 5 8 bar or 13 bar 2 Table 2 Expansion Vessel as below Commercial Cylinder Volume ltr Expansion Vessel Size ltr Mounting Kit Weight...

Page 5: ...practices are adopted for manual handling of appliances parts 6 Correct PPE to be worn The Megaflo Commercial unit must be vertically floor mounted It can be placed anywhere convenient provided the d...

Page 6: ...bar Maximum design pressure low pressure system 0 80MPa 8 bar Maximum design pressure high pressure system 1 3MPa 13 bar T P relief valve setting 1 0MPa 90 C 10 bar T P relief valve setting 1 5MPa 90...

Page 7: ...3 51 23 51 56 52 18 52 36 The thermostat temperature settings of the water heater as placed on the market by the supplier Specific precautions that shall be taken when the water heater is assembled in...

Page 8: ...4 BSP 400 400 437 437 523 523 606 605 D N A 872 872 N A 1024 1024 N A 1224 1224 N A 1470 1470 E F G 418 418 443 443 527 527 599 599 593 593 618 618 707 707 779 779 1008 1108 1183 1433 1172 1373 1225 1...

Page 9: ...CE AREA 2m 7 5m 3m 5m Table 10 Pressure drop across coils 1000 1450 2000 400 500 800 NOMINAL CAPACITY LITRES 1250 2500 PRIMARY FLOW RATE l min 15 30 60 0 02bar 0 04bar 0 32bar 0 01bar 0 08bar 0 44bar...

Page 10: ...s for Cylinders Auxillary Immersions 1000 1450 2000 400 500 800 NOMINAL CAPACITY LITRES 1250 2500 Maximum kW ratings Upper boss 36 45 45 45 54 54 54 54 Table 13 Water delivered to 40 C 1000 400 500 80...

Page 11: ...uld be used for auxillary back up heating only Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower 400 500 800 1000 1250 1450 2000 2500 94110302...

Page 12: ...auxillary immersion heaters are fitted with a thermostat which is fitted in the centre of the heater plate and a cut out which is fitted to the side of the thermostat These MUST be wired in series wit...

Page 13: ...nents certified for 10 000 cycles of operation for the contactor controlled by the thermostat and at least 30 for the contactor controlled by the non self resetting thermal cut out Line terminal marke...

Page 14: ...either The Building Regulations England The Building Regulations Scotland or Building Regulations Northern Ireland The Water Fittings Regulations England and Wales or Water Byelaws Scotland Water supp...

Page 15: ...k the flow arrows on the side of the body The expansion relief valve should be installed with the discharge pipe work in either the horizontal position or facing downwards if the discharge pipe is fac...

Page 16: ...rge Pressure gauge connections one each side Secondary return WRAS approved pump Check valve Air vent at highest point in system not supplied To Drain Hot water outlet Direction of flow De stratificat...

Page 17: ...to ensure the volume can be circulated in 1 hour The pump instructions will need to be reviewed for information on the correct setting Please follow the installation schematic fig 8 for guidance When...

Page 18: ...s larger than the nominal outlet size of the safety device between 18 and 27m at least 3 sizes larger and so on bends must be taken into account in calculating the flow resistance See Diagram 1 Table...

Page 19: ...move lime deposits and to verify that it is not blocked G3 Requirement there shall be precautions to ensure that the hot water discharged from safety devices is safely conveyed to where it is visible...

Page 20: ...OUTLET SIZE MINIMUM SIZE OF DISCHARGE PIPE D1 MINIMUM SIZE OF DISCHARGE PIPE D2 FROM TUNDISH MAXIMUM RESISTANCE ALLOWED EXPRESSED AS A LENGTH OF STRAIGHT PIPE I E NO ELBOWS OR BENDS RESISTANCE CREATED...

Page 21: ...C maximum flow temperature to primary heat exchanger 89 C The boiler cannot be vented through the Megaflo Commercial unit Indirect Thermal Cut Out And 2 Port Motorised Valve To comply with Building R...

Page 22: ...LLOW DHW DOMESTIC HOT WATER HTG HEATING DHW OFF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Bl Br G O GY Figure 14 2 x 2 port valve system S Plan L N N L N L G GY 1 2 3 L N HTG ON DHW ON PUMP BOILER ZONE V...

Page 23: ...e working practices Replacement Make sure the Immersion heater gasket face is clean and if necessary replace the gasket spare part number 95607396 Replace the Immersion heater and make sure the 8 nuts...

Page 24: ...ef Valve during the heating cycle The thermal cut out is factory set to 80 C max for direct heating Primary Side Fill the indirect primary circuit following the boiler manufacturer s commissioning ins...

Page 25: ...rior to the Pressure Reducing Valve or the main stop cock to the system 2 Open the lowest hot tap in the system to relieve the system pressure 3 Using a spanner unscrew the pressure reducing cartridge...

Page 26: ...34 should be filled in to record the actions taken and the date the work was undertaken Maintenance Under normal circumstances the control valves should not require any maintenance However annual insp...

Page 27: ...ion If fault is suspected consult boiler manufacturer s instructions Indirect thermal cut out has operated Check reset by pushing button on thermal cut out Check operation of indirect thermostat Indir...

Page 28: ...AR 95607461 8 EXPANSION VESSEL 200L 6 BAR 95612723 9 EXPANSION VESSEL 300L 6 BAR 95612724 10 1 INTEGRATED INLET CONTROL VALVE 5 10BAR 95605176 11 ISOLATING BALL VALVE 1 95605178 12 ISOLATING BALL VALV...

Page 29: ...28mm COMPRESSION TO 1 1 2 95605110 51 2 PORT MOTORISED VALVE BODY DN 32 7031586 52 2 PORT MOTORISED VALVE BODY DN 40 7031587 53 ACTUATOR 24V 7031588 54 ACTUATOR 230V 7035971 55 32 CONNECTION 7031595 5...

Page 30: ...30 MAINTENANCE AND SERVICING 3 1 Part No 95 611 025 2 Part No 95 607 396 4 9 43 47 Part No 95 607 _ _ _ 15 Part No 95 605 182 11 14 Part No 95 605 _ _ _ 17 22 Part No 95 605 _ _ _ 10 48 Part No 95 605...

Page 31: ...1 MAINTENANCE AND SERVICING 3 26 29 Part No 95 605 _ _ _ 23 25 Part No 95 605 _ _ _ 30 31 Part No 7033371 32 Part No 95 612 650 35 36 Part No 7031564 7031565 33 Part No 95 612 652 37 38 Part No 95 607...

Page 32: ...2 MAINTENANCE AND SERVICING 3 39 Part No 95 605 177 40 Part No 95 607 690 41 Part No 95 607 691 50 Part No 95 605 110 49 Part No 95 980 009 51 52 Part No 7031586 7031587 53 54 Part No 7031588 7035971...

Page 33: ...Unvented Hot Water Cylinder 33 MAINTENANCE AND SERVICING 3...

Page 34: ...Unvented Hot Water Cylinder 34 MAINTENANCE AND SERVICING 3...

Page 35: ...Unvented Hot Water Cylinder 35 USER GUIDE 4 NOTES...

Page 36: ...a two year warranty Titanium Immersion heaters where fitted are covered by a five year warranty The Megaflo Commercial Lifetime Warranty The Megaflo Commercial Lifetime Warranty covers Megaflo cylinde...

Page 37: ...ance with the requirements set out in the maintenance section of the installation instructions Access is available at reasonable times and upon reasonable notice to the Megaflo product to allow for an...

Page 38: ...d the property be sold the new owner and any subsequent owners will receive a 30 year warranty from the date the original owner purchased the Megaflo or new home with a Megaflo installed In non domest...

Page 39: ...Unvented Hot Water Cylinder 39 USER GUIDE 4...

Page 40: ...Unvented Hot Water Cylinder 40 2011 7032408_issue_01...

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