Lennox BAC020SNM, Инструкция по установке, эксплуатации и обслуживанию

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HEATING: GAS BURNER
BALTIC R410A-IOM-0708-E Page 76
PRELIMINARY CHECKS BEFORE START-UP
NOTE :
ANY WORK ON THE GAZ SYSTEM MUST BE CARRIED
OUT BY QUALIFIED PERSONNEL.
THIS UNIT MUST BE INSTALLED IN ACCORDANCE WITH
LOCAL SAFETY CODES AND REGULATIONS AND CAN
ONLY BE USED IN PLANED INSTALLATION CONDITIONS
FOR OUTDOOR.
PLEASE READ CAREFULLY THE MANUFACTURER’S
INSTRUCTIONS BEFORE STARTING A UNIT.
BEFORE COMMISSIONING A UNIT WITH GAZ BURNER,
IT IS MANDATORY TO ENSURE THAT THE GAZ
DISTRIBUTION SYSTEM (type of gas, available pressure…)
IS COMPATIBLE WITH THE ADJUSTMENT AND
SETTINGS OF THE UNIT.
Check access and clearance around the unit

Make sure one can move freely around the unit.

A minimum one-meter clearance must be left in front of the
burnt gas exhaust flue.

Combustion air inlet and burnt gas exhaust(s) must NOT
be obstructed in any way.
Supply Network Pipe Sizing
MALE THREADED CONNECTION FOR GAZ BURNER: 3/4”
Check that the gas supply line can provide the burners with
the pressure and the gas flow rate necessary to provide the
heating nominal output.
Numbe
r of male threaded connections (3/4”)
UNIT SIZE
20 25 35 45 55 65 75
S POWER 1 1 1 1 1 1 1
H POWER 1 1 1 1 1 2 2
GAS FLOW (for G20 at 20mbar and 15°C) m
3
/h
UNIT SIZE 20 30 35 45 55 65 75
S POWER 2 2 2 3 3 5.7 5.7
H POWER 3 3 5 6 6 11.5 11.5
For modulating gas we have just H power for C, D & E-box

The gas supply of a Rooftop gas unit must be realized
according to Sound Engineering Practice and the local
safety codes and rules.

In any case the diameter of pipe-work connected to each
Rooftop must not be smaller than the diameter of the
connection on the Rooftop unit.

Make sure that a shut-off isolation valve has been installed
before EACH Rooftop.

Check the supply voltage to the exit of the power supply's
transformer T3 of the burner: it must be between 220 and
240V.
STARTING UP THE GAS BURNER
Purge the pipe-work near the connection on the ignition
control Valve for a few seconds.

Check that the unit's treatment
“
Fan
”
blower is running.

Set the control to “ON” This will prior
ities the gas burner.

Increase the set temperature (room set point temperature)
to a temperature higher than the actual room temperature.
Fig. 48