GMV5 Home DC Inverter Multi VRF Units
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(3) Load of guest room is generally large, take median value to upper limit value.
(4) For the room with many exterior walls, with large area or large area of glass, it is
suggested to calculate the load.
(5) Floor heating load of toilet should take 500W/room.
Calculation result of floor heating load of different rooms are as below:
With floor heating
or not
Load of floor
heating (kW)
8.3.5.3 Initial selection of generator
Calculate according to the above floor heating load, the total floor heating load is:
2.25*4+3=12kw. Initial selected generator is: one 16kw NRQD16G/A-S generator.
In addition, in initial selection of generator, it can also conduct initial selection according to
floor heating area. At present, the generator of our company is NRQD16G/A-S, one generator
can serve the area of about 100 m
2
.
8.3.5.3 Checkup of quantity and capacity of generator
According to model selection of air conditioner, outdoor unit GMV-S280W/A-X with 25kW is
selected.
Limit for rated capacity of indoor unit
accounting for rated capacity of
outdoor unit
Limit for
quantity of
generator
Checkup of floor heating capacity of generator should calculate according to floor heating
capacity of outdoor unit.
Floor heating capacity of each generator=revised floor heating capacity of outdoor
unit/quantity of generator, but the maximum capacity should not be over 16kw. So actual floor
heating load of each generator should be basically equal.
Floor heating capacity of outdoor unit is calculated according to ―revised floor heating
capacity‖:
In this example, actual floor heating capacity of generator=16kw, (calculating
value=24.6/1=24.6kw, but the maximum capacity should be 16kw). Then actual floor heating
capacity of generator 16kw≥floor heating load 12kw. So the selected model of generator is
passed.
If the calculated floor heating capacity of generator (add 3kw electric heating capacity) is less
than floor heating load, then user should reselect outdoor unit (select outdoor unit with larger
capacity).
8.3.6 Model selection of water tank
(If using way of user is ―air conditioner+floor heating‖, then please skip this step) ——select
model of water tank according to water using demand of user;
It is required that quantity of water tank is ≤ quantity of generator;
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