Commissioning; Start-Up - Munters GFn Mode D'emploi Et D'entretien

• each heater unit has to be electrically fed and
connected to a single remote thermostat or any
other remote driving controller;
• do not connect more than one heater to a single
contact;
• when the heater's main switch is placed on 0
'OFF' position, the room thermostat must not
allow the startup of heater's burner;
• when the room thermostat is not used, do not
operate the air heater by connecting and
disconnecting the main power supply.

6. COMMISSIONING

CAUTION Only qualified personnel are allowed
to perform all the operations described in this
chapter. The operator must read carefully and
understand all air heater documentation.
Observe the general guidelines when preparing the
air heater for first start up:
• make sure packaging materials are removed from
the air heater;
• check the air heater for possible damage or loose
components. If there are visible damage or loose
components do not operate the air heater;
• verify the inventory of installation items included
with the machine;
• attach components which were not attached.
Refer to Chapter 5.
NOTE Prerequisites for first start-up of the air heater
are properly installed air heater according to
instructions from Chapter 5 and main power line
connected to the air heater.
Before the start-up of the air heater check the
following items:
• check that the local conditions (distribution,
nature and fuel pressure value) of the fuel line is
compatible with the air heater settings (fuel type
and calibration setting);
• check that the main switch is on 'OFF' (0) position
(see Chapter 3.3);
• check that the exhaust piping system has been
properly installed (see Chapter 5.3);
• check that proper electrical supply has been
connected to the air heater. Check the voltage;
• check that the fuel line has been properly
connected (see Chapter 5.5);
• check the presence and integrity of the diesel fuel
filter (see Chapter 5.5);
• check
the fuel filter (diesel burners) and
connections for fuel leakage;
• check and eliminate the presence of air inside the
fuel line (diesel burners);
• check that the thermostat's plug socket (if
applicable) has been properly connected (see
Chapter 5.6);
• check that the room thermostat (if applicable) has
been properly installed (see Chapter 5.6).

6.1 Start-up

NOTE Observe closely the mandatory requirements
for first start-up:
• air heater properly installed air heater according
to instructions from Chapter 5;
• electrical power line connected to the air heater;
• checks before start-up are completed according
to instructions from Chapter 6.
WARNING
automatically without warning. Failure to complete
the checks before the start-up could cause the air
heater to malfunction.
Follow the procedure below to start the air heater in
the automatic heating mode:
• open the fuel supply valve(s) system;
• turn on the electrical supply system e.g. press the
circuit breaker on the main electrical panel;
• set the room thermostat to desired temperature (if
applicable);
• push the heaters main switch to position 1 (ON);
• push the heaters operating mode switch to
position I (heating mode). The burner will start
when the room thermostat or external controller
gives the input signal;
• the air blower starts first then, the ignition system
sparks. Fuel is ignited and flame is monitored by
the photocell.
Follow the procedure below to start the air heater in
the manual ventilation mode:
• make sure the fuel supply valve(s) system is
closed;
• turn on the electrical supply system e.g. press the
circuit breaker on the main electrical panel;
• push the heaters main switch to position 1 (ON);
• push the heaters operating mode switch to
position II (ventilation mode);
• the air blower will start.
Carefully observe the following points:
• after the initial start-up it is strongly recommended
to monitor the air heater while it is functioning to
ensure safe and efficient operation. Check the
absence of vibrations and abnormal noise, the
absence of fuel leakage from the fuel filter and
fuel line;
• check the correct rotation of the propeller blade.
The fan blade must rotate in the same direction
as the arrow indicated on the rear side of the
heaters housing;
• do not perform any operation before stopping the
air heater as described in Chapter 6.2;
• burner is designed to stop in case if it detects any
combustion deviance. In case of stop a red light
appears on burner. Before starting up again the
burner
combustion deviance has to be found and
resolved. Contact burner technical support or
customer service representative;
11 | © Munters AB, 2019
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