Unit installation

User, Installation and Service Manual for F1 Gas Unit Heaters 25
Ed. 05/2009
SECTION 4 - USE AND OPERATION
START AND STOP OF THE UNIT
WARNING
Qualified service engineer must fulfil the first start-up of the appliance.
Before turning on the heater, a qualified service engineer must check:
• that electric and gas supply ratings are the same as those given in the data plate.
• that the setting is compatible to the heater’s power
• that the exhaust duct operates correctly
• that the gas supply pressure is within rating limits
• that combustion air feed and exhaust occur correctly according to the existing standards.
Winter
1) Set the room thermostat to the highest temperature.
2) Check that the gas cock is open.
3) Supply the unit with electric power by closing the omnipolar switch.
4) Press the button A summer/winter in the position winter
(see figure 23)
5) After the pre-purge period (about 40 seconds), the gas solenoid valve opens and the ignition
electrode begins to sparkle and lights the burner.
6) When flame detected the flame control box is keeping the gas valve opened.
7) Otherwise the flame control unit locks out the heater: the gas supply to the burner is shut off
and a lock-out light C on the reset button B lights up (see figure 23).
8) When default described at item 7) occurs, press the reset button B.
9) If ignition has occurred regularly set the room thermostat to the desired temperature.
WARNING
After a long period of inactivity of the unit or at the first start-up, it may be necessary to repeat the
ignition operation a few times due to the presence of air in the piping.
Figure 23
REMOTE CONTROL SWITCH
☼
C
A
B
A summer/winter switch:
winter position
for the heating, function
summer position
☼ for the ventilation
B reset button
C lck-out light