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10.7.5 - Installation and operation of the heat reclaim with
desuperheater option
The 30RQM/30RQP units with the desuperheater option (No.
49) are supplied with one heat exchanger per refrigerant circuit.
Typical installation diagram of units with the desuperheater option
Heating mode
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30RQM/30RQP unit with desuperheater option without hydfronic module
Border between 30RQ unit and the system
Typical installation
Key
30RQM/30RQP unit components
1
Heat exchanger (multi-pipe type)
2
Compressor
3
Desuperheater (plate heat exchanger)
4
Air heat exchanger (coils)
5
Expansion valve (EXV)
6
Damage limitation accessory in case of a fire
7
Electric heater to protect the desuperheater against frost (not supplied)
8
Desuperheater insulation (not supplied)
9
Unit control box
10 Heating/cooling cycle four-way reversing valve
11 Desuperheater water inlet
12 Desuperheater water outlet
13 Water heat exchanger water inlet
14 Water heat exchanger water outlet
15 Unit with desuperheater option without hydraulic module
16 System heat load
17 Border between the 30RQM/30RQP unit and the typical installation
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During the unit installation the heat reclaim plate heat exchangers
must be insulated and frost protected, if required.
Please refer to the typical installation diagram below for the
main components and functions of the 30RQM/30RQP units
with the desuperheater option.
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Installation components (installation example)
20 Pump (hydraulic circuit of the desuperheater loop)
21 Shut-off valve
22 Desuperheater water flow balancing and control valve
23 Damage limitation accessory in case of a fire
24 Expansion tank
25 Charge or drain valve
26 Air bleed
27 Heat exchange coil or plate heat exchanger
28 Pressure gauge
29 Flow switch
30 Pump (sanitary hot water circuit)
31 Three-way valve + controller
32 Filter to protect the pump and the desuperheaters
33 District water supply
34 Sanitary hot water outlet
Cooling mode
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