M thermal Mono
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zones control for heating is activated. On other conditions, the mixing valve will keep off. When the valve initially turns on,
the opening time and closing time is same and then the time is controlled according to the difference between water pipe
temperature and setting water temperature of the controlling zone.
Hydronic adapter PCB (Optional)
With the help of hydronic adapter PCB, totally 8 thermostats can be used at the same time for maximum 8 rooms to
control heat pump.
Note:
1. M thermal units just have the controlling function, while the mixing valve, water pump of each zone need to be field
supplied and connect to M thermal unit.
6.5 Smart grid control
Free electric energy signal: DHW mode turn on, the setting temperature will be changed to 70 automatically, and the
TBH operate as below:T5<69 the TBH is on T5 70 , the TBH is off. The unit operates in cooling/heating mode as
the normal logic.
Expensive electric energy signal: only available for cooling or heating mode and user can set the maximum operating time.
6.6 Balance tank temperature control
Balance tank temperature sensor is used to control on/off of heat pump.
Once the heat pump stops, internal pump stops to save energy and then balance tank provides hot water for space heating.
In addition, balance tank temperature control can meet both space heating and domestic hot water needs at the same
time. Balance tank can store energy to provide hot water whilst heat pump runs heat mode/cooling, which can reduce the
host selection and the initial investment.
6.7 USB data transfer
Convenient program upgrade
No need to carry any other heavy equipments but only USB can realize program upgrade of indoor unit and outdoor unit.
Parameter setting transmission between wired controllers
Installer can quickly copy the setting from one controller to another via USB, which save the time of on-site installation.
6.8 Dry contract M1M2 control
M1M2 can be set in the wired controller for heat pump on/off control, TBH control, AHS control.
For heat pump on/off control
When dry contract closes for 1s, heat pump stops. When dry contract opens for 5s, heat pump on/off according to
wired controller or room thermostat setting.
For TBH control
TBH is only controlled by M1M2. If dry contract closes, T5<65 then TBH opens until water tank temperature
reaches 70 .
For AHS control
In heating mode AHS on/off is only controlled by M1M2. In DHW mode, M1M2 control does not affect AHS on/off.
Midea CAC
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