Hisense AHM-080HCDSAA - Alternate Function Operation with Priority; 3 Wvs Operation

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Control function
(4) Swimming pool (SWP)
In addition, the unit can be combined with swimming pool. When the swimming pool operation is required, the 3-way valve
for the swimming pool changes its normal position diverting to the swimming pool heat exchanger, allowing to heat the
swimming pool water to a comfortable value. Swimming pool can be heated up by heat pump / Auxiliary electric heater /
boiler depending on heat source availability and setting.
Outdoor Unit
Indoor Unit
AEH
3wv Cooling
Tiw
Tow
Swimming
Pool
3wv SWP
Boiler
signal
Tow3
WP3
WP1
WP1
SWP
Pump
SWP
HX
Hydraulic Separator
Tswp
10.1.2 Alternate function operation with priority
The heat pump system can be congured with various combinations of the four main functions. For example, space heating/
cooling and DHW is congured as available function. And di󰀨erent function of space heating/cooling/DHW/SWP and their
combinations can be switched on altogether through master controller interface. Usually heat pump can only operate one
function at the same time. So, all the available function will operate alternately with di󰀨erent priority depending on setting.
When specic function operates the corresponding 3-way valve will divert to specic water circuit. For example, when DHW
operation is required, the 3-way valve for DHW changes its normal position diverting to the sanitary tank inner coil, allowing
to heat the tank water.
10.1.2.1
3WVs operation
3WVs are used to switch to specic function operation.
3WVs operation as following.
Operation mode 3WV DHW 3WV Cooling 3WV SWP
Defrost by DHW *1 ON OFF OFF
Defrost by Space heating *2 OFF OFF OFF
Air purge *3 On and OFF periodically
Seizure protection *4 On and OFF periodically
Space heating operation OFF OFF OFF
Space cooling operation OFF ON OFF
DHW operation ON OFF OFF
SWP operation OFF OFF ON
“Space cooling operation and DHW
operation simultaneously *5”
ON ON OFF
“Space cooling operation and SWP
operation simultaneously *6”
OFF ON ON
NOTE:
*1. refer to 10.9.2.
*2. refer to 10.9.2.
*3. refer to 10.8.5.
*4. refer to 10.8.6.
*5.It is possible to operate Space cooling (heat pump and water pump1) and DHW (water pump3 or boiler) simultaneously
when hydraulic separator is available (refer to 10.2.5), [DSW5-2] set as [OFF] and [Point of DHW & SWP] set as [After Hydr
S] (refer to 10.1) , in this situation cooling water circulation will not pass through hydraulic separator.