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DESIGN
Table 1.3
HP off setting (flow)
HP off setting (return)
HP on-off differential setting
HW store heating - off setting
HW store heating on-off differential setting
HW store overheat setting
Sensor S1/S2: Duplex domestic hot water overheat (store temp.)
Sensor S6:
Heat pump flow temperature
Sensor S5:
Heat pump return temperature
Sensor S4:
Central heating flow temperature (zone 1 circuit)
Sensor S3:
Domestic hot water temperature (store temperature)
Notes: See Figure 1.3/1.4 for sensor locations.
Model Selection Data
General guidance is given in Table 1.2.
When checking the suitability of the heat pump we recommend that the heat losses
of the external building fabric plus half of the ventilation losses are directly compared
to the Ecodan heat pump output of 9kW.
If design calculations are carried out in the normal way, using the method set out in
BS5449. The Ecodan heat pump will cope with heating systems in which boiler sizes
calculated in this way are rated at up to a maximum of 13kW.
As the BoilerMate A-Class HP-DEM is a hot water storage appliance, we recommend
that the model size of the appliance is chosen by calculating the hot water volume in
the normal way using the criteria set out in BS 6700 / NHBC for storage appliances.
Electricity Supply
One mains supply rated at 32A, 230V~, 50Hz is required.
Minimum external fuse rating and the main supply cable ratings are given in Table 1.2
Technical Data section of this manual. This appliance MUST BE EARTHED.
All external wiring to the appliance must be in accordance with the latest I.E.E. Wiring
Regulation, and any local regulations which may apply.
The appliance shall be supplied from a suitably rated double pole isolator with a
contact separation of at least 3mm in both poles.
This must be suitably labelled, provide complete electrical isolation and be within 1
metre of the BoilerMate A-Class HP-DEM Unit.
In the event of an electrical fault after installation of the appliance, preliminary
electrical checks must be carried out i.e. Earth Continuity, Short Circuit, Polarity, and
Resistance to Earth.
Sensor Control Parameters & Default Temperature Settings
Description
Sensor
S6
S5
S5/S6
S3
S1/S2
HP: Heat pump
CH: Central heating
HW: Hot water heating
Appliance Location
The BoilerMate A-Class HP-DEM appliance must
be installed on a flat surface which is capable
of supporting the weight of the appliance and
any other ancillary equipment. (The full weight
must be used, see table 1.2 on page 13).
The appliance sizes and the minimum cupboard
dimensions are shown in Table 1.2. A minimum
of 600mm is required in front of the appliance
for maintenance purposes. (See figures 1.3 and
1.4 on pages 8 and 9).
The appliance is designed to be installed on the
timber plinth supplied with the appliance.
Details of the various electrical and pipework
connections required are shown in Figures 1.3
and 1.4.
Page 14
Default Value (
0
C)
58
56
3
60
7
75 max.
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