8
© 2020 Carrier
9.
OPERATION
After installing and completion of pilot start up and tests
SP-48-NG/PG-ND
is ready for operation.
General description of activities performed by the burner/boiler control system or manually by operator:
9.1 Preparation the furnace/boiler for firing up.
9.2 Opening of air to the burner and pilot.
9.3 Preparation of gas installation for operation.
9.4 Setting the gas pressure at the right level.
9.5 Starting of pilot trial for ignition sequence performed by the controller or in some cases by the operator:
a)
The correct setting of the main burner combustion air,
b)
Checking the interlock conditions before firing up,
c)
Providing power to the ignition source,
d)
Optionally, carrying out the gas line leakage test,
e)
Closing the purge valves and opening of gas shut off valves,
f)
The ignition should take place within the time specified by the standards, which should be confirmed by
the relay output of the flame detector,
g)
Electrical igniter power off after confirming the presence of the pilot flame, closing the pilot shut off
valves (in case of continuous pilot operation they stay open),
h)
In case of the absence of the flame after trial for ignition - the valves are closed and electrical igniter is
switched off,
i)
Eventual repeating of trial for ignition sequence (depends on the application). Details of sequence,
timing is dependent on application and applicable standards.
In the case of the manually controlled gas pilot the operator has to close the gas supply to the pilot by himself at the
right time if the flame is not detected.
10.
SERVICE, MAINTENANCE AND REPAIRS
To remove the pilot for inspection or repair the gas and electrical supply has to be shut off first. Check that the gas
shut off valve is closed and that the power for ignition device is disconnected.
WARNING
:
DO NOT PERFORM ANY MODIFICATIONS TO THIS EQUIPMENT
AND NEVER USE UNAUTHORIZED SPARE PARTS AS THIS WOULD RESULT IN
A BREACH OF THE ATEX CERTIFICATES CONDITIONS AND COULD PROVE
HAZARDOUS TO YOUR HEALTH AND LIFE !
WARNING:
WHEN THE HEATER/BOILER IS IN OPERATION, DURING SERVICE
WORKS ON BURNER INSTALLATION, ALWAYS USE PROTECTIVE CLOTHING,
GLOVES AND GOGGLES!
REMARK:
EVERY 12 MONTHS MAKE AN INSPECTION OF AIR TUBE. IF YOU SEE
ANY TRACES OF EXCESSIVE TEMPERATURE DURING OPERATION, INCREASE
THE COOLING-COMBUSTION AIR FLOW OR RETRACT THE GAS PILOT A LITTLE
FROM THE COMBUSTION CHAMBER. IF INCREASING THE AMOUNT OF AIR,
REMEMBER THAT IT MAY IMPACT THE FLAME QUALITY.
