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The heating system should be installed by a competent installer in accordance
with the recommendations laid down by the building services compliance guide,
OFTEC and sound engineering practice.
In order to comply with building regulations, the boiler passport and or
OFTEC forms CD10 for installations and CD11 for commissioning should be
left with the customer. Alternatively the installation can be inspected and
approved by a building control officer.
4.3 Combi General Requirements
The boiler will have a DHW priority when both domestic hot water (DHW) and
central heating (CH) are selected. So if the flow switch is closed or the heat store
has not been satisfied the entire output of the boiler is directed to DHW before the
boiler will switch over to CH. When fully cold it can take up to 20 minutes for the
heat store of a 90,000 Btu/h combi to be satisfied, and slightly longer for a 70,000
Btu/h combi.
After a draw-off of 120L at 24L/min, with an average temperature rise of 32ºC, the
thermal store of a 90,000 Btu/h combi has a recovery time of approximately 7
minutes. A 70,000 Btu/h combi will take slightly longer to recover.
Note:
If HW has not been selected no hot water can be produced even if the heat
store is up to temperature.
4.3.1 Pump Overrun
Where there is a build up of excess heat in the boiler primary heat exchanger and
the central heating has not been selected then the pump overrun thermostat will
operate. The excess heat will then be pumped into the heat store. Once the
temperature has fallen in the boiler and the pump overrun stat is satisfied, then
the hot water pump will stop.
Содержание Boilerhouse B120HE
Страница 13: ...4 5 2 U Series Utility Casing Components Models up to 120 HE 150 HE Models Page 11...
Страница 14: ...4 5 3 U Series Utility Pre Wired UHE Key Components Models up to 120 HE 150 HE Models Page 12...
Страница 15: ...4 5 4 U Series Utility Pumped UPHE Key Components Models up to 120 HE 150 HE Models Page 13...
Страница 16: ...Page 14 4 5 5 U Series Utility System USHE Key Components 4 5 6 U Series Utility Combi UCHE Key Components...
Страница 17: ...4 5 7 K Series Kabin Pak Casing Components Models up to 120 HE 150 HE Models Page 15...
Страница 18: ...4 5 8 K Series Kabin Pak Pre Wired KHE Key Components Models up to 120 HE 150 HE Models Page 16...
Страница 19: ...4 5 9 K Series Kabin Pak Pumped KPHE Key Components Models up to 120 HE 150 HE Models Page 17...
Страница 22: ...Page 20 4 5 13 Combi Pipe Layout UCHE KCHE Models...
Страница 23: ...Page 21 5 TECHNICAL DETAILS 5 1 Combi Sequence of Operation Flow Chart...
Страница 25: ...Page 23 5 2 3 U Series Utility 150HE Models 5 2 4 U Series Utility UCHE Models...
Страница 27: ...Page 25 5 2 7 K Series Kabin Pak 150HE Models 5 2 8 K Series Kabin Pak Base Tray 150HE Models...
Страница 28: ...Page 26 5 2 9 K Series Kabin Pak KCHE Models 5 2 10 K Series Kabin Pak Base Tray KCHE Models...
Страница 41: ...Page 39 6 3 2 Wiring Schematic...
Страница 66: ...Page 64 8 1 10 Kabin Pak Plume Management Kit KPMK The kit comprises...
Страница 78: ...Page 76 13 BURNER FAULT FINDING 13 1 Riello RDB...
Страница 79: ...Page 77 14 COMBI FAULT FINDING 14 1 Central Heating...
Страница 80: ...Page 78 14 2 Domestic Hot Water...
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