33
English
Fiel
d S
etting Mode
[Time variation control of Heat pump and booster heater of DHW]
t
1
0
1
0
1
0
1
0
Booster
Operation
H/P
Operation
#3032
#3025
DHW
request
Heating
request
NOTE
࡙
The FSV #4022 for booster heater priority should be set to “0 (both)” or “2” (booster) to use booster
heater.
࡙
If not(backup heater priority), the booster heater can be operated in case of no backup heater demand.
Booster Heater Variables for Controlling DHW Tank
࡙
The FSV #3031 should be set to “1(On)” (Default) to use booster heater as an additional heat source for
DHW tank.
࡙
Booster heater startup delay timer : In case of DHW request, this timer will delay the operation of
booster heater compared to heat pump.
ࣕ
FSV #3032 (Default 20 min., Range 20 ~ 95 min.), In "Power/Forced" DHW mode, the delay timer will
be neglected, and the booster starts immediately.
ࣕ
In “Economic” DHW mode, the DHW heating will be conducted only with heat pump.
ࣕ
#3032 should be smaller than the maximum H/P time (#3025). If the delay time is set too high, it
might take very long time for DHW heating.
࡙
Temperature difference determining the booster heater OFF temperature (T_BH OFF = Tu + #3033) :
ƊǤࢄߤߡߤߤࡡUʪ˙ɇЇ̷ϩߡઑAࡡŵɇ͝˝ʪࡠߡॄߥઑAࢋ
࡙
Temperature difference determining the booster heater ON temperature (T_BH ON = T_BH OFF - 2)
