8
17
100
150
200
250
300 ft
3
/min
0.05
0.07
0.09
0.12 0.14 m
3
/sec
AIR VOLUME
mbar in.wg.
0.375 0.15
0.25
0.10
0.125 0.05
RESIST
ANCE EXTERNAL
TO HEA
T
E
R
170V
190V
200V
210V
220V
230V
FAN RUNS BUT MAIN BURNER NOT OPERATING
Y
IS
‘SUMMER
AIRFLOW’
SWITCH
SET TO
‘0
’
N
SET ‘SUMMER
AIRFLOW SWITCH TO
‘0’
IS
THERMISTA
-STAT
CONNECTED
IS
THERMISTA
-STAT SET TO
‘SUMMER
AIRFLOW
Y
N
CONNECT
THERMISTA-STAT
SET THERMISTA-STAT TO
REQUIRED
TEMPERATURE SETTING
N
FAULT
CLEARED
Y
Y
DISCONNECT THERMISTA-STAT
AT TERMINALS ‘7’ & ‘8’, LINK
TERMINALS ‘7’ & ‘TEST’
DO NOT LINK ‘7’ &’8’
DOES
FAN STILL
RUN ?
DOES
FAN STILL
RUN WITH
BURNER
LIT?
N
CHECK THERMISTA-STAT WIRING.
IF OK, REPLACE THERMISTA-STAT.
IF NOT, RECONNECT TERMINALS
‘7’ & ‘8’, AND SET THERMISTA-STAT
TO DEMAND HEAT
Y
HAS
BURNER
LIT?
REPLACE ELECTRONIC
MODULE. RECONNECT
THERMISTA-STAT
FAN OPERATES AFTER BURNER HAS
RAISED THE INTERNAL
TEMPERATURE TO CAUSE THE FAN
DELAY CONTROL TO OPERATE
HAS
FAN STOPPED
AND BURNER
LIT?
Y
Y
Table 3
Fan Performance Curve
6.9
SYSTEM WARM AIR BALANCING:
6.9.1
Set the ‘SUMMER AIRFLOW’ switch to ‘
I
’.
6.9.2
Balance the system to provide required volume proportions at warm air outlets.
NOTE:
If the system includes ceiling diffusers, air velocities 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.
6.9.3
Set the ‘SUMMER AIRFLOW’ switch to ‘
O
’.
6.9.4
Ignite the Pilot and Main burners as detailed in sub-paras 6.3.4 to 6.3.7.
6.9.5
Set the appliance to operate in accordance with the User’s requirements.
6.8.6
Ignite the pilot and main burners, and check that the Limit switch operates between 120 and 180 seconds
(indicated by the main burner extinguishing).
6.8.7
Switch OFF the electrical supply to the air heater.
6.8.8
Reconnect the air circulation fan at the terminal block.
6.8.9
Hinge up the fan chamber door, taking care to avoid causing damage to wiring, and secure using the 3 x screws
previously removed.
6.8.10 Switch ON the electrical supply to the air heater.
6.8.11 Ensure that the Limit switch resets, indicated by the main burner igniting, within approximately 60 seconds.
6.8.12 Check for gas soundness within the appliance.
6.8.13 Turn OFF the gas supply at the service cock and ensure that the Multifunctional control fail-safe operates within
60 seconds (indicated by loud click from Multifunctional control).
6.8.14 Turn the gas supply ON at the service cock.
LOW RATE
HIGH RATE
kW
MJ/h
Btu/h
kW
MJ/h
Btu/h
INPUT
8.59
30.9
29,350
9.69
34.9
33,100
OUTPUT
6.44
23.21
22,000
7.32
26.4
25,000
Gas rate
cv
0.80m
3
/h (28.3ft
3
/h)
0.90m
3
/h (31.9ft
3
/h)
1037Btu/ft
3
Burner setting
12.0mbar (4.8 in wg)
16.0mbar (6.4 in wg)
pressure (hot)
Main Injector
AMAL187/001/800
Table 2
Main Burner Pressure Settings
