Hisense AHM-080HCDSAA - Water Pump Control; Water Pump Control During Space Heating;Cooling; WP1;WP3 Control

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Control function
10.8 Water pump control
Depending on system conguration WP1/WP2/WP3 work in the water circulation as following.
Water
pump
Description
WP1
This Water pump is present inside the unit. It is responsible of water recirculation between plate exchanger and hydraulic
separator /installation. A extra WP1 can be cascaded with inside EC WP1 to o󰀨er additional hydraulic head. The extra WP1
works equally with inside EC WP1.
The extra WP1 must be installed at beginning of water circulation to o󰀨er total hydraulic head for all water circulation of DHW/
SWP/Space Heating/ Space Cooling.
(* For Integra Unit, the extra WP1 must be installed at beginning of water circulation just after DHW to o󰀨er total hydraulic head
for all water circulation of SWP/Space Heating/ Space Cooling.)
WP2
Water Pump used only in case a secondary Water Cycle for space heating or space cooling is used. It ensures water circulation
at Water Cycle 2.
WP3
Water Pump used in case that an hydraulic separator is used. It ensures water circulation from hydraulic separator to the
distribution circuit.
NOTE:
1. Optional Output signal can be congured as function of [WP1] and be used to drive relay of extra WP1 (referring
to10.10.2) .
2. Optional Output signal can be congured as function of [WP2] and be used to drive relay of WP2. (referring to10.10.2) .
3. Optional Output signal can be congured as function of [WP3] and be used to drive relay of WP3. (referring to10.10.2) .
10.8.1 Water pump control during space heating/cooling
10.8.1.1
WP1/WP3 control
10.8.1.1.1 Hydraulic separator is Enabled
WP1 and WP3 need to work together to deliver water circulation When hydraulic separator is Enabled ([hsb] set as
[Enabled]).
(1) [O󰀨_mode(heating)] is set as [ON] (Space heating/cooling Thermo ON/OFF by request of water outlet temperature on
Water Cycle 1 and Water Cycle 2)
.
Pumps control can be set to Standard or Economic mode. This conguration is set using DSW4 PIN5.
When PIN is OFF, pump is in Standard operation, pump is always in operation when space heating or cooling is enabled
(Switch ON), so in case of disable space heating or cooling (Switch OFF), pump stops operation.
When PIN is ON, pump is in Economic operation. This allows the pump to work periodically when space heating or cooling
is Thermo OFF (Demand OFF for space heating and cooling).
● When DSW4-5 is OFF, pump of WP1/WP3 is in Standard operation, water pump works as shown in the graphic below:
Space heating
Switch
ON/OFF
Thermo
ON/OFF
2min
WP1
ON
OFF
ON
OFF
ON
OFF
WP3
ON
OFF
2min