Kaisai KMK-60RY1, Руководство по обслуживанию

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M thermal Split
28 202004
Midea
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6.6 Smart grid control
Unit adjusts the operation according to different electrical signals to realize energy saving.
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.
Common electric energy signal: unit operates according to users’ need.
Expensive electric energy signal: only available for cooling or heating mode and user can set the maximum operating time.
6.7 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.
6.8 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.
6.9 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 Confidential
M thermal Split
202004 29
Part
3
- Con
trol
7 Role of Temperature Sensors in Control Functions
Figure 3-7.1: Location of the temperature sensors on Split systems
Notes:
1. The names and functions of the temperature sensors labelled 1 to 11 in this figure are detailed in Table 3-7.1.
Figure 3 -7.1:Locati on of the t emperature s - Mn o s r o s n e Thermal Spli t s y st ems
Notes:
F
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