Water Connections - Riello Condexa PRO Series Installation, Technical And Maintenance Manual

2.7

Water connections

The dimensions and position of thermal module's hydraulic connections are shown in the table below.
Front view
RI
DESCRIPTION
A
B
C
D
E
F
H (optional 3-way valve
attachment)
MI (system flow)
RI (system return)
SC (condensate drain)
G (gas inlet)
9
Before connecting the thermal module the protection plugs
must be removed from the delivery, return and condensate
drain pipes.
9
Before connecting the thermal module, it is necessary to
clean the system. This step is absolutely required when the
appliance replaces another one on pre-existing systems.
In order to carry out this cleaning activity, if the old generator is
still installed on the system, it is advisable to:
− add a de-scaling additive.
− Operate the system with the generator on for around 7
days.
− Discharge dirty system water and flush the system one or
more times with clean water.
MI
35 P 50 P 57 P
387 387 387
143,5 143,5 143,5
63,5 63,5 63,5
283,5 283,5 283,5
98,5 98,5 98,5
92,5 92,5 92,5
202,5 202,5 -
G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M
G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M G 1" 1/2 M
25 25 25
G 1" M G 1" M G 1" M
Bottom view
RI
Condexa PRO
70 P 90
387 387
143,5 143,5
63,5 63,5
283,5 283,5
98,5 98,5
92,5 92,5
- -
25 25
G 1" M G 1" M
If the system is very dirty, repeat the last procedure one more
time.
If the old generator is not present or available, use a pump to
circulate the water + additive through the system for about 10
days and perform a final washing as described in the previous
paragraph.
Once the cleaning has been completed, it is recommended to
add a suitable protective fluid to the system's water before in-
stalling the thermal module.
In order to clean the heat exchanger's built-in water system,
please contact Technical Assistance Service
0
Do not use incompatible liquid detergents, including acids
(for instance, chloridric acid and similar) in any concentra-
tion.
0
Do not subject the heat exchanger to cyclical pressure
changes because fatigue stress is very dangerous for the in-
tegrity of system components.
19
INSTALLATION
A
B
C
G MI
D
E
SC
F
H
100 115 135
387 387 387
143,5 143,5 143,5
63,5 63,5 63,5
283,5 283,5 283,5
98,5 98,5 98,5
92,5 92,5 92,5
- - -
25 25 25
G 1" M G 1" M G 1" M
R .
mm
mm
mm
mm
mm
mm
mm
Ø
Ø
Ø mm
Ø