MCAC-RTSM-2013-12 Midea High-temperature Direct-heating Heat Pump Water Heater Technical Manual
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7. Installation Instruction
7.1. Y-type filter must be installed in the inlet pipeline
A brass DN25 mode Y-type filter in 80 meshes is equipped with each finished unit of the
RSJ-380/SN1-820-D, RSJ-200/SN1-540V-D and RSJ-100/N1-540V-D model. The filter is required to be
installed in the water inlet pipeline at the place closed to the water tank, otherwise, the filter and
high-precision temperature valve inside the unit might be blocked out by dirt.
7.2. The selection of lift and flow of the circulating pump
The circulating pump requires for large flow and the rated flow should be more than 6 m
3
/h for
RSJ-380/SN1-820-D, 4 m
3
/h for RSJ-200/SN1-540V-D and 2 m
3
/h for RSJ-100/N1-540V-D. The lift of
the pump is sampled according to the hydraulic calculation.
7.3. The fall between the main unit and the hot water tank
The lift of the circulating pump should be corresponded to the fall between the main unit
and the hot water tank. If it is not big enough, some protecting code may appear while
running and the unit will stop.
7.4. Installation Water Tank
7.4.1 The hole site of the tank
Remark:
1. The diameter of the cycle water inlet and outlet should be in accordance with the charts of the water pipe
selection.
2. The diameter of blind pip for the location of the water temperature sensor may be about Φ8~Φ10.
3. The diameter of the tap water inlet and the hot water outlet should be determined by the maximum
hourly hot water flow of all the end water users.
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