Instructions premix Air heaters type XR10.. 60
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If the straight length of the discharge flue is longer than 4 meters this condensate will not
evaporate again and accumulate in the heater ! Isolation of the discharge pipes or an
condensate trap just at the heater is then absolutely necessary.
The maximum flue length not isolated is 4 meters. (do not count bends)
The maximum flue length isolated is 9 meters. (do count bends, see below).
The maximum pressure drop in either the air supply pipe, or the flue pipe ,must not exceed 9
metres straight pipe , excluding the terminal. Whenever bends are used the pressure drop is
greater and therefore a 90° bend will count as 2 metres and a 45° bend as 1 metre. All flue
pipes must be of the same diameter as the flue spigots on the heater, and all flue joints must be
sealed. For further information regarding the flue system please contact Winterwarm or your
supplier. Make sure the roof terminal is at least 0,5m above roof level..
Do not connect a ‘standard’ flue terminal to this heater ,nor a terminal for a condensing boiler.
Use only pipes and bends for overpressure with profiled sealing-rings.
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6.1 General
The unit can heat as well as ventilate. By using the temperature-sensor on the unit and the one
in the room-thermostat, the temperature-difference between the two in the room is monitored.
Should the difference become higher than a set value, due to the fact that warm air has
accumulated underneath the roof, the system-fan will start and push the warm air down, acting
as a destratification fan.
6.2 Heat demand
If the thermostat indicates heat demand, the following cycle will commence:
The DFC circuit board acknowledges the heat-demand and sends a signal to the burner control
DBC.
The DBC gives power to the premixfan and the latter will start running on the starting speed.
After 30 seconds the electrode will spark for max. 5 seconds and the gas-air mixture will ignite.
When the flame is detected, the unit will modulate to the desired load after ca. 15 seconds.
Depending on the given load, the system fan will start modulating (3 steps) as well.
Attention!
decline towards outside
