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ENGLISH
Space heating
The ON/OFF signal and operation mode and temperature setting are set on the user interface. PUMP O keeps running as long as the unit
is ON for space heating, SV1 keeps OFF.
Domestic water heating
The ON/OFF signal and target tank water temperature (T5S) are set on the user interface. PUMP O stops running as long as the unit is ON
for domestic water heating, SV1 keeps ON.
AHS (auxiliary heat source) control
The AHS function is set on the hydraulic main board (See 10.1 "DIP switch settings overview")
1) When the AHS is set to be valid only for heating mode, AHS can be turned on in the following ways:
a. Turn on the AHS via BACKHEATER function on the user interface;
b. AHS will be turned on automatically if initial water temperature is too low or if the outdoor ambient temperature is too low to
reach target water temperature (see graph "
Operation range" in heating mode - page 80)
. PUMP O keeps running as long as the
AHS is ON, SV1 keeps OFF.
2) When the AHS is set to be valid for heating mode and DHW mode:
a. in heating mode, AHS control is same as part 1);
b. in DHW mode, AHS will be turned on automatically when the initial domestic water temperature T5 is too low or if the outdoor
ambient temperature is too low to reach target water temperature (see graph "
Operation range" in DHW mode - page 80)
. PUMP O
stops running, SV1 keeps ON.
3) When the AHS is set to be valid, it is possible to assign M1M2 switch to control AHS. In this way, if M1M2 dry contact closes, AHS
will be turned on; this function is invalid in DHW mode
(cfr. 10.5.15 "input define")
.
TBH (tank booster heater) control
The TBH function is set on the user interface. (See 10.1 "DIP switch settings overview")
1) When the TBH is set to be valid, TBH can be turned on in the following ways:
a. Turn on the TBH via TANKHEATER function on the user interface;
b. TBH will be turned on automatically in DHW mode when the initial domestic water temperature T5 is too low or if the outdoor
ambient temperature is too low to reach target water temperature (see graph "
Operation range" in DHW mode - page 80)
.
2) When the TBH is set to be valid, it is possible to assign M1M2 switch to control TBH. In this way, if M1M2 dry contact closes, TBH
will be turned on in DHW mode
(cfr. 10.5.15 "input define")
Solar energy control
Hydraulic module recognizes solar energy signal by judging Tsolar or receiving SL1SL2 signal from user interface (See 10.5.15 INPUT DEFI
-
NE). The recognition method can be set via SOLAR INPUT on the user interface. Please refer to 9.7.6 "
Connection for other components"
-
1) "For solar energy input signal" for wiring.
1) Whe
n Tsolar is set to be valid, PUMP S starts running when Tsolar is high enough; PUMP S stops running when Tsolar is low.
2) When SL1SL2 control is set to be valid, PUMP S starts running after receiving solar kit signal from user interface. Without solar kit
signal PUMP S stops running.
b
CAUTION
The highest outlet water temperature may reach 70°C, please beware of burn.
NOTE
Make sure to
fit the (SV1) 3-way valve correctly. For more details, please refer to 9.7.6 "Connection for other components.
At extremely low ambient temperature, the domestic hot water is exclusively heated by TBH, which assures that heat pump can be used for
space heating with full capacity.
Details on domestic hot water tank configuration for low outdoor temperatures (T4DHWMIN) can be found in 10.5.1 "DHW MODE SETTING".
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