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7216549.01 - en
INSTALLATION AND OPERATING MANUAL
These are fitted with an instantaneous plate exchanger in stainless steel sized for a heat exchange of 36 kW with inlet
water at 75 °C.
The heat exchange surface offers suitable domestic hot water performance also with system water at 60 °C.
Table: Domestic hot water production according to inlet temperature
Temperature of water in centralised
plant circuit
(°C)
Heat exchange capacity
(kW)
Domestic hot water flow with ΔTs
= 35 K
(l/min)
75
36
14.7
70
31
12.7
65
28
11.4
60
26
10.6
ΔTS = temperature difference between hot water outlet and cold water inlet
Temperatures greater than 75 °C are not recommended in order to prevent damaging scale deposits that can clog the
exchanger, reduce performance and shorten maintenance intervals.
Maximum pressure in hydraulic circuit: 8 bar
Minimum dynamic pressure in hydraulic circuit: 0.2 bar
7. DHW OUTPUT
The satellite is fitted with an adjustable automatic by-pass (see figure 5) which opens the recirculation circuit when the
module does not require heat. To adjust, turn the screw “B” using a screwdriver. The “
+
” on the hydraulic assembly indi-
cates complete aperture while “-“ indicates closure.
If modulating pumps are fitted, the by-pass can be completely closed.
6.1 BY-PASS