Installation instructions
15
SCARICO
1
2
ALIMENTAZIONE
3.7 - CONNECTING TO SAFETY HEAT
EXCHANGE DRAIN
Solid fuel fired boilers must be installed with
the safety devices foreseen by relevant laws
in force.
For this purpose, AIREX boilers are fitted with
a safety heat exchanger.
The installer
must
fit a
heat discharge valve
on this safety heat
exchanger, with the control bulb inserted in the bulb holder placed
on the rear wall of the AIREX boiler.
We recommend fitting the valve on the cold water inlet.
Provide a drain pipe with a funnel and a siphon leading to an
appropriate drainage at the heat exchanger outlet.
This drainage must be controlled on sight.
Attention!
If this precaution is not taken, triggering of
the thermal discharge valve can cause
damage to persons, animals and objects for
which the manufacturer cannot be held
responsible.
3.8 - RECIRCULATION PUMP
For correct boiler operation, a recirculation pump must be
installed.
The recirculation pump, supplied in an optional kit, must be
connected is indicated in fig. 19.
If it is not installed, besides limiting the boiler’s lifespan, it
will invalidate the warranty.
ATTENTION!
The hardness of the mains water supply con-
ditions the boiler’s lifespan.
Depending on the hardness of the mains water
supply, the possibility of installing appropriate
water softeners for domestic use has to be taken into con-
sideration in compliance with DM n° 443 of 21/12/90.
It is always recommended to treat water with a hardness
greater than 15°f .
fig. 10
FEED
DRAIN
