51
12.2.4.2 - Installation and operation of the heat recovery with desuperheater option
Units with the desuperheater option are delivered with a plate heat exchanger for each refrigerating circuit.
When installing the unit, the heat recovery plate heat exchangers must be insulated and protected against frost if required.
Refer to the main diagram below for the main components or functions associated with a unit with desuperheater option in a
standard system.
1
2
2
6
6
5
5
4
4
7
7
8
8
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q
q
q
w
w
e
o
r
t
t
t
9
!
@
!
@
$
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W
u
p
Q
E
y
R
3
3
30RBM/30RBP unit with desuperheater option without hydronic module
Typical installation
Border between 30RBM/30RBP unit and the system
28
1 Evaporator
2 Compressor
3 Desuperheater (plate heat exchanger)
4 Air condenser (coils)
5 Expansion valve (EXV)
6 Damage limitation accessory in case of a re (safety valve)
7
Electric heater to protect the desuperheater against frost (not supplied)
8 Desuperheater insulation (not supplied)
9 Unit control box
10 NA
11 Desuperheater water inlet
12 Desuperheater water outlet
13 Evaporator water inlet
14 Evaporator water outlet
15 Unit with desuperheater option without hydronic module
16 System heat load
17 Border between the 30RBM/30RBP unit and the typical installation
20 Pump (hydronic circuit of the desuperheater loop)
21 Shut-o valve
22 Desuperheater water ow balancing and control valve
23 Damage limitation accessory in case of a re (safety valve)
24 Expansion tank
25 Charge or drain valve
26 Air purge
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
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