Winterwarm DXA100, Installation Manual

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13 INSTRUCTION MANUAL AIR HEATER TYPE DXA
When the supply pressure is too low, the heater will
not work. Error A-09 will be shown on the display. The
setting from the pressure switch is shown in the technical
specifications (chapter 3).
WARNING! When the supply pressure is too low, the
combustion gasses may become harmful for humans, as
well as animals and crops.
NOTICE When multiple heaters start at the same time,
the gas pressure may drop. When the gas pressure
restores, the heater will automatically restart.
Gas type Unit Gas supply pressure
Minimum value Maximum value
Natural gas mbar 17 30
Propane &
Butane mbar 25 57
7 Commissioning the air heater
7.1 Adjusting the settings
Prior to packaging, the safety and functioning of each
air heater is checked in detail. It is also set to the right
combustion efficiency.
In general, the heater does not need to be adjusted after
installation. It is only necessary to perform a functional
check and to obtain a flue gas analysis and record it for
later reference.
CAUTION! Use only calibrated instruments to adjust the
air heater.
CAUTION! Never carelessly turn the adjuster screws.
NOTICE Adjusting the control without a supporting flue
gas analysis voids the warranty.
Only adjust the burner pressures if they differ more than
0,5 mbar from its setting.
7.2 Commissioning the air heater
Once the unit is installed according to this manual, the unit
can be commissioned. To do so, follow these instructions:
1. Make sure the gas supply pipe is clean, gas tight
and free from air.
2. Switch on the electric supply with the maintenance
switch.
You are now able to observe the first start-up and become
familiar with the functioning of the heater.
NOTICE If the gas line is not purged correctly, the heater
will attempt to start twice before going into a lock-out
condition. In this case, manual reset is necessary.
1. Instruct the end user of the about a safe use of the
air heater:
a. The presence of gas
b. The location of the manual gas valve
2. Instruct the end user about the operation of the
heater:
a. Lock-out indication
b. Reset
3. Instruct end user about the necessary
maintenance.
4. Leave this manual with the end user.
7.2.1 First use – thermostat
To commission the air heater via the room thermostat, do
the following:
• Put the thermostat in the highest position. The start
sequence is always the same.
The air heater will burn for the minimal firing time (see
§3.1 for more information).
7.2.2 First use - display
To commission the air heater via the display’s manual test
mode, do the following:
NOTICE The display’s manual test mode will only work for
maximum 10 minutes.
1. Press and hold the Return and (–) button for a
few seconds (figure 12). The display will alternate
between Lo and St. This means the heater will start
up in Low fire.
2. Press the (+) and (–) buttons to toggle between
Low and High fire (figure 12).