Winterwarm DXA100, Installation Manual

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8.2 Converting to another gas type
To change the gas type of the heater, the gas injector has
to be changed (figure 15 - 6).
Figure 15 - The head of the burner unit
CAUTION! For safety reasons, the manufacturer
recommends that the air heater is converted to another
gas type only by the manufacturer, its representative or
a qualified service technician. Contact your supplier for
more information.
To change the gas injector, do the following:
1. Open the inspection hatch.
2. Remove the gas pipe by unscrewing the compres-
sion fitting (figure 15 - 4).
3. Remove the two connecting boots (figure 15 - 9)
from the ignition electrode by gently pulling at the
cables.
4. Unscrew the four nuts that connect the burner unit
to the air inlet.
5. Remove the burner unit from the air heater.
6. Disassemble the burner unit:
a. Remove the stabilizer (figure 15 - 7) from the
injector (figure 15 - 6).
b. Remove the flange from the injector by un-
screwing the injector’s nut.
7. Install the new injector.
8. Reassemble the burner unit.
9. Select the correct injector diameter and burner
pressure (see §3.2).
10. Change the labels on the air heater with ones that
have the correct values for the new gas type.
11. When the air heater has been reassembled and
cleaned, perform the following checks:
a. Open the manual gas valve and check if the
gas supply line does not leak.
b. If the heater has been moved, check if the
supply lines are connected properly.
WARNING! Gas supply lines that are not connected
properly can slip off and create a fire hazard.
c. Check if the wiring is secured properly.
12. Perform all checks that are performed during the
installation of the air heater (see §4):
a. Measure the burner pressure.
b. Measure the combustion values.
c. Check the general heater operation.