Installation instructions
23
INDICATIVE HYDRAULIC AND ELECTRIC DIAGRAMS
4
The following diagrams are for reference only and therefore are not binding.
Unical declines any responsibility for errors or omissions.
Systems with AIREX boiler.
Production of water for central heating system with temperature control by means of manual mixer valve (or electric
managed by supplementary heating controller).
After having loaded the wood storage and triggered combustion
(see page 42, chap. 6.6) close the top door.
Power the panel board and press the fan start button: this
initiates automatic management of the combustion phase by
the panel.
In this condition, the fan and recirculation pump of the boiler will
be running; if the room thermostat is in demand, the following
message “
WIN HEATI WOOD BURN
” will appear on the panel
display.
The system pump is not intended to run while the boiler is still
cold.
It will remain stopped until the boiler temperature set in
PARAMETER 1
is reached.
If the temperature does not reach the value set in
PARAMETER
1
within the useful time set in
PARAMETER 9
, the fan will not
switch off, the recirculation pump will keep running and the
message “
WIN HEATI AUTO STBY
” will appear on the display.
This means that not enough wood has been loaded to reach
the set temperature (PARAMETER 1) or that the time set in
“
PARAMETER 9
” is too short.
To overcome this stalemate, press the “fan start” key to start a
new combustion phase.
If the boiler temperature (detected by probe S4) rises to satisfy
PARAMETER 1
within the useful time set in
PARAMETER 9
,
the system pump will switch on and the boiler will run normally.
Having reached the temperature set in
PARAMETER 0
, the
fan switches off and the message “
WIN HEATI BURN WOOD
”
appears on the display.
The system pump keeps running and a temperature decrease
in the boiler (detected by probe S4) switches the fan back on.
In this case, the fan switches on to keep the boiler body “hot”
even though there is no room thermostat request.
If there is no heat request by the system (room thermostat open
contact), the message “
WIN OFF BURN WOOD
” will appear on
the display.
With the wood loading door open, the fan always runs at maximum
speed.
When the temperature set in
PARAMETER 2
is reached, the
water overheating alarm condition keeps the fan from running
even though the wood loading door is open.
The recirculation pump runs based on the temperature
detected respectively by the probes
S4
and
S5
and the value
set in
PARAMETER 8
.
The pump runs until the set value is reached, representing the
temperature differential between boiler flow and return: when
the differential is satisfied, the pump stops and will switch back
on when exiting from the differential.
