Bosch HP270-2 - Protection Modes; Anti-Freeze Protection

Page 10 from 56 6-720-821-364 SM HP270 – 250 - 200 2016/12 en
Boost Mode
Conditions
ON if compressor is
ON:
Note: If Duct On
starts 2 min before
compressor and if
Duct Off starts 1 min
before compressor in
order to update air
temperature value
ON if -10ºC <
T
air
< +35ºC
and T
dis
< 61ºC
and T
top
< 58ºC
OFF
ON if
compressor is
ON
or
ON if E-heater
ON when
compressor is
OFF
ON
Table 3 – Operation Modes Conditions
2.2) Protection Modes
Anti-Freeze Protection
The anti freeze protection is designed to protect both the module and the tank and is active in all conditions,
specially, when the appliance is set in Heat Pump, standby, OFF and Holyday (Hol) modes.
Note: In order to ensure the anti freeze protection activation, the mains plug must not be disconnected.
Pict.6 – Heat Pump Diagram (Model HP270-2: -10ºC / +35ºC)
Module Protection
Start Up Condition:
T
Bottom
< 4ºC
Module Protection
Stop Condition:
Until T
bottom
> 6ºC + Water Pump
ON during 1 min
Tank Protection
Start Up Condition:
T
top
< 5ºC
Tank Protection
Stop Condition:
E-Heater ON until T
top
> 8ºC
(not in case of Full or Legionela activation)
Pump + Electric Heater ON
Pump + Electric
Heater ON
Only HP270-3 and HP200/250-1:
Integrated E-Heater in module