9
16
6.3.12 In the event of a lockout and the ignition and main burners failing to ignite, reference should be made to table 4 in the
fault finding section of these instructions in order to establish the fault condition.
6.3.13 Allow the air heater to operate for a minimum of 15 minutes to ensure stability.
6.3.14 Reset the thermista-stat to the desired comfort level
6.3.15 Set the time control to the desired “on” and “off” periods.
6.3.16 Set the “AIR HEATER” switch on the time control to “TIMED”.
6.4
MAIN BURNER PRESSURE TEST:
NOTE: AIR HEATER BURNERS ARE FACTORY SET TO PROVIDE A NOMINAL HIGH RATE OUTPUT AS DETAILED IN SUB
PARA 1.2
6.4.1
Loosen the screw on the outlet pressure test point and fit a pressure test gauge (see Fig. 8)
6.4.2
Check the gauge reading against the information at paragraph 1.3.
6.4.3
If necessary, use the burner pressure adjuster to obtain required gauge reading in accordance with paragraph 1.3.
6.4.4
Remove the pressure gauge and re-tighten screw on the outlet pressure test point.
6.5
AUTOMATIC CONTROLS CHECK
6.5.1
Light the ignition and main burners as detailed in 6.3 above.
6.5.2
Allow the heater to operate for 15 minutes to ensure stability.
6.5.3
After a short period, ensure that the fan increases to full speed.
6.5.4
When the temperature reaches the control setting, check that the main burner cycles ON and OFF at intervals of
approx. 75 to 120 seconds.
6.6
SAFETY CHECK:
In order to check the correct operation of the control module, run the heater for a short period and introduce a fault condition by
carrying out the following sequence:
6.6.1
Check for gas soundness within the appliance.
6.6.3
Turn on both the gas and electrical supplies to the heater.
6.6.4
Set the “AIR HEATER” switch on the time control unit to “CONT”.
6.6.5
Light the ignition and main burners as described in section 6.3
6.6.6
Allow the heater to run for a period of 5 minutes to stabalise.
6.6.7
Turn off gas supply to heater at the heater Gas Cock. DO NOT TURN OFF AT GAS METER!
6.6.8
Having detected the fault condition, the module should cause the red LED on the indicator panel to flash and the
module will go through the ignition sequence. Having detected the fault condition a second time, the control module
should cause the heater to go into lockout, indicated by a constant red LED and the LED status indicator will show
“6”
6.6.9
Reinstate gas supply and wait for a minimum period of 10 seconds.
6.6.10 Depress the “RESET” button on the Indicator Panel.
6.6.11 The heater will go through its ignition procedure and the ignition and main burners SHOULD ignite.
6.6.12 Set the “AIR HEATER” switch on the time control unit to “TIMED”
7.
INSTRUCTIONS FOR USERS
7.1
If the building is unoccupied, ensure that the user instructions are left taped to the air heater for the user’s reference and that
the installation instructions are left at or near the air heater for use on future service calls.
7.2
If the building is occupied, hand the user instructions over and ensure that the user understands:
7.2.1
How to light the air heater.
7.2.2
How to re-set the air heater if “LOCKOUT” occurs.
7.2.3
How to operate the time control, thermista-stat and the SUMMER AIRFLOW switch.
7.2.4
That the time control must be reset following a power failure.
7.2.5
How to turn off the heater and switch off the electrical supply to the heater.
7.2.6
How to remove, clean and refit the air filter and at what intervals, (i.e. fortnightly, or weekly for new houses).
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“
9
”
Diagnostics Flowchart