Midea R410A Direct Heating Type HPWH 50Hz Technical Manual MCAC-HTSM-201906
55
RSJ-800/SZN1-H
Circulative heating rated water flow
Water resistance of circulative rated water flow
The hot water circulative pump must use hot water pump; the temperature resistance of the circulative
water pump cannot lower than 80°C.
Rated head of circulative pump:
Σ On-way resistance + Σ Local resistance + Unit resistance
Rated flow of circulative pump:
Rated flow of a single circulation heating unit × Circulating unit quantity
2.8 E-heater capacity selection
As the requirement, the auxiliary electric heater can be selected. The host unit provides the passive
control signals of the auxiliary heater.
The installation location of the auxiliary heater must strictly comply with the installation schematatic
diagram.
Rated heating capacity of total unit × 10%~30%.
E-heater can apply the pipe-type or water tank E-heater. After installation, it must through dialing codes
to choose the relative E-heating mode; otherwise it will damage the unit or E-heater.
The selection of auxiliary heater is only for reconmendation, and the selection of auxiliary heater can be
selected according to the actual conditions.
Make sure E-heater is covered with water all the time.
2.9 Electric connection of the unit
Only use the electric components specified by product manufacture.
Electronic installation must comply with the native regulations. Independent power supply should be
applied. Power supply should satisfy electrical specifications that the unit requires.
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