8
17
6.2
SYSTEM BALANCING:
6.2.1
Set the air heater electrical supply
ON.
6.2.2
Set the thermista-stat to the “SUMMER AIRFLOW” position.
6.2.3
Balance the system to provide the required volume proportions at the warm air outlets.
Note:
If the system includes ceiling diffusers, the air through these should be NOT LESS THAN 1.5m/s (300ft/min), except for very
small rooms, (i.e. bathrooms etc.). Outlet faces may require partial blanking in order to achieve this.
6.3
LIGHTING IGNITION AND MAIN BURNER:
6.3.1
Turn on the gas supply to the heater.
6.3.2
Set the “AIR HEATER” switch on the time control unit to the “OFF” position.
6.3.3
Set the thermista-stat to “9”.
6.3.4
Locate the status LED indicator which can be observed through the inspection hole in the bottom right hand corner
of the control module.
6.3.5
Turn on the mains power supply to the heater
6.3.6
Set the “AIR HEATER” switch on the time control to “CONT.” and observe the LED status indicator.
6.3.7
Whilst the control module runs through its diagnostic cycle the decimal point (DP) in the bottom right hand corner of
the LED display will flash continuously.
6.3.8
The igniter will spark for a maximum period of 60 seconds during which time the ignition and main burners SHOULD
ignite and the igniter will stop sparking.
6.3.9
When the control module reaches stage 5, (indicated by “5” on the LED) power is fed to the gas valve and the green
LED “ON” light on the indicator panel will illuminate. After a period of approx. 5 seconds, the module will move on to
stage 6 (indicated by “6” on the LED).
NOTE: regardless of when the burner ignites during the 60 second period,
the LED will continue to display stage 6.
6.3.10 If, after the 60 second period, the main burner has ignited the LED indicator will show “0” and the green LED “ON”
light on the indicator panel will remain steady.
6.3.11 If the main burner fails to ignite, the red LED marked “LOCKOUT” will illuminate on the display panel and the LED
status indicator will display an alphanumeric character relevant the the fault detected.
Fig.13
ECONOMAIRE 90 Flow Diagram
ON
ON
12
9
3
Fig. 7
Electrical Door Assembly
(showing time control, indicator panel and status indicator)
LED status
indicator
Cover plate screws
Time control
Indicator panel
