Installation manual
27
RKHBRD011~Y1
Indoor unit for air to water heat pump system
4PW61218-1C – 2012.06
External room thermostat
When the reheat temperature is reached, the further heat up of the
domestic hot water tank will be decided by the external room
thermostat thermo conditions and running timers which are
programmed by the installer.
1
Reheat operation
When requesting space heating and domestic water heating
(reheat) at the same time, the domestic water will be heated till
maximum reheat temperature, then space heating will start
again.
2
Storage operation
When requesting space heating and domestic water heating
(storage) at the same time, domestic water will be heated
according to running timer, then space heating will start again
according to running timer, then domestic water heating will start
again according to running timer, this will continue till storage set
point is reached.
A
Operation
Space heating
Domestic water heating
B
Domestic hot water reheat thermo-on request
C
Domestic hot water tank temperature
D
Room temperature thermo-on request
E
Remote controller room temperature
F
Domestic hot water lower limit temperature
G
Domestic hot water upper limit temperature
(maximum possible storage temperature) [b-03]
H
Domestic hot water reheat minimum temperature [b-00]
J
Domestic hot water reheat maximum temperature [b-01]
K
External room thermostat set point
L
External room thermostat ON/OFF hysteresis
ON
ON
OFF
OFF
A
B
C
H
J
L
75
°
C
35
°
C
–X
°
C
+X
°
C
ON
G
F
OFF
D
E
ON
OFF
K
K
A
Operation
Space heating
Domestic water heating
B
Domestic hot water storage thermo-on request
C
Domestic hot water tank temperature
D
Room temperature thermo-on request
E
Remote controller room temperature
F
Domestic hot water lower limit temperature
G
Domestic hot water upper limit temperature
(maximum possible storage temperature) [b-03]
H
Domestic hot water reheat minimum temperature [b-00]
J
Domestic hot water reheat maximum temperature [b-01]
K
External room thermostat set point
L
External room thermostat ON/OFF hysteresis
ON
ON
OFF
OFF
1
Minimum operation time for domestic water heating
(initial 30 minutes [d-01])
2
Interval minimum stop time for domestic water heating
(initial 15 minutes [d-02])
3
Maximum operation time for domestic water heating
(initial 30 minutes [d-01])
A
B
C
H
J
K
75
°
C
35
°
C
–X
°
C
+X
°
C
ON
G
F
OFF
D
E
ON
OFF
1
2
3
K
L
