Hydraulic Separator Is Disabled - Hisense Hi-Therma Series Service Handbook

Control function
SWP operation
Switch
ON/OFF
Demand
ON/OFF
WP1
ON：
①Tswp<Tswps And Tow3≧Tswp +2
②Optional input terminal of [Swimming pool Demand ON/OFF] is closed.
WP3
OFF：
①Tswp > Tswps or Tow3≦Tswp +1
②Optional input terminal of [Swimming pool Demand ON/OFF] is open.
NOTE:
1. WP1 and WP3 has 2 minutes or more of overrun after requiring OFF depending on outlet water temperature.
2. WP1 is always OFF when Boiler works as replacement source and heat pump stop working in Emergency operation
(referring to 10.1.3.2), HP Block operation (referring to10.9.5) or Boiler working mode of [Alternative] (referring to 10.6.).

10.8.2.2 Hydraulic separator is Disabled

Only WP1 work to deliver water circulation When hydraulic separator is Disabled ([hsb] set as [Disabled]).
WP1 works as shown in the graphic below:
DHW operation or SWP operation
ON
Switch
OFF
ON/OFF
Demand
ON/OFF
WP1
NOTE:
1. WP1 has 2 minutes or more of overrun after requiring OFF depending on outlet water temperature.
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
2min
2min
268
2min
2min