HEATING ENGINEER
20
D
3÷5
D
b
A sensor socket must be positioned at a distance of 3 to 5 times the diameter of the water return pipe, upstream
from the water fitting, to measure effective water return temperature and control the anti-condensate pump or the
temperature controller stabilisation function.
b
Any temperature controllers installed remotely from the control panel must be compatible with the system’s electrical
connections and functioning logic.
An anti-condensate pump operates during periods of
no heat request to avoid damage until the boiler returns
to a stable operating temperature. While the system is
operating, this pump must guarantee a flow rate between
20 and 30% maximum flow to ensure a water return
temperature no lower than 55 °C. Pump shutdown must
also be delayed for at least 3 minutes at the beginning of
extended periods of boiler shutdown (overnight or week-
end shutdown etc.).
ANTI-CONDENSATE PUMP
COMBUSTION GAS EXHAUST
The flue gas exhaust and its connection to the stack
must be made in compliance with applicable laws and
standards, using heat resistant, condensate resistant and
stress resistant rigid pipe and sealed joints.
Ø
H1
H2
DIMENSIONS (mm)
RTQ 3S
35
55
70
Ø
139
139
179
H1
325
325
384
H2 (with heater)
950
950
1010
