20
For installations of domestic hot water provide for a filter to protect the safety of
the systems. It is suggested to install a check valve and an expansion in AFS line.
In presence of water with hardness above 25 ÷ 30 ° Fr, is prescribed an appropriate
treatment of the heating water, in order to avoid limescale problems. It should
be noted that even a small quantity of limescale, could reduce the performances
of the domestic side.
The materials of construction are in compliance with the Directive 98/83 EC.
Despite the fittings are mounted at the factory, it is advisable to monitor all screw
connections. Equally important is to do a pressure test during the operation.
Exceeding above listed limits may cause damages to module and impair warranty
terms consequently
IMPORTANT
!
SECTION 3: DIMENSION AND CONNECTION
Recirculation inlet
DCW inlet
DHW outlet
Primary supply
Primary return
M-F 1-¾”
Fig.1
Fig.2
F 3/4”
Assembling instrunctions and maintenance
Fig.1
Fig.2
480
840
185
70
100
75
80
100
¾” F
1”M
¾” M
¾” F
1”M
¾” F
1”M
¾” F
1”M
DESCRIPTION
UNIT
LIMIT VALUES FOR COPPER
SOLDERED HEAT EXCHANGER
PH
7-9 (including saturation factor)
Saturation factor(delta PH))
-0.2<0<+0.2
Total hardness
°Fr
15-30
Conductivity
µS/cm
10...500
Sediments
mg/l
<30
Clorine
mg/l
<0.5
Hydrogen sulphide
mg/l
<0.05
Ammonia
mg/l
<2
Hydrogen carbonate
mg/l
<300
Hydrogen carbonate / sulphide
mg/l
>1.0
Sulphide
mg/l
<1
Nitrate
mg/l
<100
Nitrite
mg/l
<0.1
Sulphate
mg/l
<100
Manganese
mg/l
<0.1
Free iron
mg/l
<0.2
Free carbon dioxide
mg/l
<20
