Hisense AHM-080HCDSAA - Control Function; Solar Panels Overheat Protection

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Control function
10.7.1 Control function
There are 2 ways to trigger solar pump operation to transfer the heat to the domestic hot water tank’s heat exchanger.
(1) [Solar_s] set as [Input]
Trigger solar pump operation to transfer the heat to the domestic hot water tank’s heat exchanger by input signal of
[Solar in].
● Solar pump ON when all of the following conditions are met.
①
Time of [Solar_min_T] has passed since Solar pump OFF.
②
Water temperature in the domestic hot water tank [TDHW] less than
[Tsolar_DHWS]- [Solar_ΔTDHW_c] °C.
③
Input signal of [Solar in] is closed.
● Solar pump OFF when any of the following conditions is fullled.
①
Time of [Solar_max_T] has passed since Solar pump ON if [Solar_max_T] is not set as [OFF].
②
[TDHW] is higher than [Tsolar_DHWS].
③
Input signal of [Solar in] is open.
NOTE:
1. When [Solar_s] set as [Input] Optional input signal need be congured as function of [Solar in]. Refer to 10.10.1.
(2) [Solar_s] set as [solar sensor]
Trigger solar pump operation to transfer the heat to the domestic hot water tank’s heat exchanger by detecting hot water
temperature of solar panels [Tsolar].
The solar panels gather heat from the sun. When detecting hot water temperature of solar panels [Tsolar] rises above the
water temperature in the domestic hot water tank [TDHW], the solar pump operation to transfer the heat to the domestic
hot water tank’s heat exchanger.
● Solar pump ON when all of the following conditions are met.
①
Time of [Solar_min_T] has passed since Solar pump OFF.
②
[TDHW] less than [Tsolar_DHWS]- [Solar_ΔTDHW_c].
③
[Tsolar] is higher than [TDHW] +[ Solar_ΔT_c].
④
[Tsolar] is higher than [Tsolar_min].
● Solar pump OFF when any of the following conditions is fullled.
①
Time of [Solar_max_T] has passed since Solar pump ON if [Solar_max_T] is not set as [OFF].
②
[TDHW] is higher than [Tsolar_DHWS].
③
[Tsolar] is less than [TDHW] +[Solar_ΔT_disc].
④
[Tsolar] is less than [Tsolar_min]-2 °C.
NOTE:
1. When [Solar_s] set as [solar sensor] Auxiliary sensor on PCB1 of indoor unit need be congured as function of [Tsolar]
to detect hot water temperature of solar panels. Refer to 10.10.
2. Hot water temperature sensor of solar panels [Tsolar] should be installed whereabout to detect stable hot water
temperature of solar panels.
10.7.2 Solar panels overheat protection
The solar panels gather heat from the sun. when hot water temperature of solar panels [Tsolar] is too high , the solar
pump begins operating in order to transfer the heat to the domestic hot water tank’s heat exchanger or other heat emiting
device.
Optional Output signal can be congured as function of [Solar overheat] and output on signal to drive device when solar
panels overheat protection is activated. Refer to10.10.2.
● Solar pump ON and Optional Output signal of [Solar overheat] ON when following conditions are met.
①
[Tsolar] is higher than [Tsolar_overheat].
● Solar pump OFF and Optional Output signal of [Solar overheat] OFF when following conditions are met.
①
[Tsolar] is less than [Tsolar_overheat]-5 °C
NOTE:
1. Overheat protection is available when [Solar_s] set as [solar sensor].