Page 28 code HG0109.12GB ed.C-1106 rev.12
APEN GROUP reserves the right to change products and documents as required.
WARM AIR HEATER SERIES RAPID
CO
2
REGULATION
GAS INLET TAPPING
POINT (IN)
HG0103 IM 003
6.3
First Start Up
First start-up must be performed by an APEN GROUP Au-
thorized Service Centre.
At delivery, the heater is set and tested for using the type of
gas reported on the rating plate. Before starting the heater, go
through the following checklist:
• Make sure the available gas matches the type the heater is
set for.
• Using the “IN” pressure tap on the gas valve, verify that the
inlet pressure to the valve matches the value required for the
type of gas used.
• Make sure electrical wiring match the requirements supplied
in this manual or in other wiring diagrams enclosed with the
delivered unit. Make sure the unit is powered and the green
LED is ON.
• Close the room thermostat contact and make sure that the
switch on the back of the unit is turned on "I=WINTER".
After checking previous conditions, and if the unit is not locked,
the start-up sequence is launched. This sequence includes
pre-washing the furnace, igniting the burner start-up and then
starting cooling fans.
At this stage, the pilot burner is not likely to start because of
air in gas pipes. The heater locks up. Start-up sequence will
be automatically repeated 4 times. After 4 attempts, the heater
locks up (red LED on) and a reset is required to repeat the
start-up sequence.
6.4
Combustion Analysis
Start the unit and check that the inlet pressure to the valve
matches the one required by the gas type. If it doesn't, adjust it.
Wait a couple of minutes, then connect a flue gas content
analyzer to the chimney and check CO
2
value, comparing it to
the one listed in the Gas Setting Data (point 6.2) table referred
to the kind of fuel used.
- If this value is not included in the required range, regulate CO
2
value by adjusting the screw on the Venturi: turn it clockwise to
decrease gas flow (thereby decreasing also CO
2
value), and
counter clockwise to increase it.
6.5
Converting the Unit to LPG
This conversion is strictly forbidden in Countries such as
Belgium, where double category for gas is not allowed.
This Kit is not supplied in Countries where conversion is not
allowed.
The conversion to another type of gas shall be carried out
exclusively by an APEN GROUP certified Service Centre.
The heater is supplied to use natural gas. The kit for converting
it into Liquid Propane is supplied as a standard and includes:
- One calibrated diaphragm
- One sticker "Appliance converted to.."
Once the conversion and the setting have been made, replace
the label "Appliance set for Natural Gas" with the one "Appliance
converted to…", enclosed in the kit.
To convert the heater, do the following:
- Disconnect the unit from power supply
- Replace the supplied calibrated diaphragm between the gas
valve and the Venturi
- Power the heater on and make it ready for start up
When the burner is working, check the following:
1) The inlet pressure to the valve matches the one required
for the gas used
2) The CO
2
value does not exceed the values corresponding
to the used gas.
Should the value be different, change it by turning the regulation
screw: screw to decrease the value and unscrew to increase it.
Check again that gas circuit does not leak.
REMARK: The heater supplied for using LPG is adjusted
for G31 gas. In order to use G30, the CO
2
value must be
checked and adjusted according to table 6.2, if necessary.
Gas diaphragm replacement
