Hamworthy F40V, Installation, Commissioning And Operating Instructions

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HAMWORTHY HEATING LTD
18
FLEET V series 500001213/G
¼ turn latch
On/Off switch
Fig 7.2.1 - On/Off switch - single module

At the end of the ignition proving period, 5
seconds, the spark ignition system will be
switched off and the indicator on the control fascia
extinguished.

After a period of 15 seconds the fan will alter
speed and the burner modulation will be set
according to the heat load.

If after the 5 second flame proving period the
flame signal is below 3µA the boiler will shut down
and attempt one restart.
NOTE: THE BOILER IS EQUIPPED WITH A RESTART
FACILITY AND WILL ATTEMPT A SECOND
IGNITION, DURING WHICH THE ABOVE
PROCEDURES WILL BE REPEATED. AT THE END
OF THE RESTART PROCEDURE, IF NO FLAME IS
DETECTED AFTER THE FLAME PROVING PERIOD,
THE BOILER WILL LOCKOUT. THE BOILER WILL
NOT OPERATE UNTIL THE LOCKOUT HAS BEEN
MANUALLY RESET.
7.4 Ignition Controller Check.
1. With the burner firing, the flame signal should be at
least 3µA. Refer to
Figure 8.2.9 - Maintenance
functions . To check for correct operation of the ignition
controller, close the gas valve. The boiler should
shutdown after approximately one second and attempt a
re-ignition. Check that the flame has been extinguished
2. Alternatively, the flame probe lead can be removed
from the end of the flame probe, with the same result.
7.5 Gas Supply Pressure Check.
1. When the boiler modules have been checked for correct operation the gas supply pressure should be checked.
This should be done with all modules firing.

For Natural Gas, a nominal gas inlet pressure of 20mbar measured at the rear of the boiler is required, with
a maximum inlet pressure of 25mbar.
7.6 Combustion Checks
“The boiler modules are factory pre-set, but, site checks must be done to confirm correct performance.”
1. Remove the flue gas sampling plug from the flue
collector sump, accessible from the front of the boiler
and insert the combustion analyser probe in the flue at
the analysis point .
2. Ensure that an insertion distance of 50mm is set on
the combustion analyser probe.
NOTE: THIS DISTANCE MUST BE SET TO ENSURE
ACCURATE ANALYSIS OF FLUE GASES.
3. Insert probe horizontally into the flue elbow until
depth stop is met.
Figure 7.6 - Combustion Analyser Probe Setting
(Note: readings taken with front cover removed and 50mm probe insertion CO = < 80 ppm).