30
1
5
5
4
4
7
7
8
8
^
%
&
)
q
q
q
w
w
e
o
r
t
t
t
9
!
@
$
#
W
u
p
Q
E
y
3
3
R
!
@
0
0
2
1
5
5
4
4
7
7
8
8
^
%
&
)
q
q
q
w
w
e
o
r
t
t
t
9
!
@
$
#
W
u
p
Q
E
y
3
3
R
!
@
0
0
2
2
0
0
2
2
11.1.3 - Installation and operation of the heat reclaim with
desuperheater option
The 30RQ units with the desuperheater option (No. 49) are
supplied with one heat exchanger per refrigerant circuit.
30RQ unit with desuperheater option without hydfronic module
Typical installation
Border between 30RQ unit and the system
Typical unstallation diagram of units with the desuperheater option
heating mode
Cooling mode
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 30RQ units with the
desuperheater option.
Legend
30RQ 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
Safety valve
7
Electric heater to protect the desuperheater against frost (not supplied)
8
Desuperheater insulation (not supplied)
9
Units control box
10 Heating/cooling cycle four-way reversing valve
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 30RQ unit and the typical installation
Installation components (installation example)
20 Pump (hydronic circuit of the desuperheater loop)
21 Check valve
22 Desuperheater water flow balancing and control valve
23 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
