Mitsubishi Heavy Industries FDCW100VNX-A, Technical Manual

Page: 82 / 315

Installation
'19 • HM-T-340
Pipe installation
General
A following table shows plumbing necessary for each product.
Refrigerant Plumbing
HSB Necessary Necessary
HMA-S Necessary Necessary
PT
-
Necessary
PC-HY
- -
Outdoor unit
AA25
P
Indoor unit
BP4
BT3 BT15
BT12
XL14
XL13
XL1
XL2
Storage tank
Pipe installation must be carried out in accordance with current norms and directives.
This heat pump system is designed for low or medium temperature heating system. It is recommended water temperature must not
exceed 55°C on supply and 45°C on return at lowest design outdoor temperature (DOT) though indoor unit can operate with a return
temperature of up to 65°C and an outgoing temperature from the unit of 65°C.
Indoor unit is not equipped with shut off valves; these must be installed outside the heat pump to facilitate any future servicing.
Indoor unit can be connected to the radiator system, floor heating system and/or fan convectors.
Safety valve is not equipped with in indoor unit. Make sure to install safety valve in the circuit.
Installation diagram
FDCW series outdoor unit provides heat for space heating and domestic hot water using free energy in the outdoor air within the range
of low temperature up to -20°C. Connection is different according to the type of indoor unit (see below figures). The system is
controlled by RC-HY20-W or RC-HY40-W control unit.
HSB series
HSB series indoor unit is equipped with plate heat exchanger. It needs to install expansion vessel, shut-o
ff
valves, safety valve,
electric heater and circulation pump to make a complete heating system. In case domestic hot water is required, 3-way valve and tank
is also necessary.
Indoor unit installation
- 80 -
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