HAMWORTHY HEATING LTD
41
MILBORNE
500001130/J
8.9.2 Combustion test parameters
Using the function ‘ Combustion Test’, it is possible to generate a request from the 1st circuit or high temperature
heating circuit, to enable the combustion to be checked at maximum and minimum fan speeds and any
adjustments made to the calibration of the gas valve.
The main pump and high temperature heating circuit are activated. All combustion fans will be activated. If a
module or slave is electrically isolated by the ‘On/Off switch (see figure 7.4.3) all other fans will run.
To access the ‘combustion test’ display screen
Step Procedures Button
Required
Display
1. Press S2 (SET/ESC) and S4 (+) for 5 seconds.
All system fans will operate at the selected
speed.
2.
The maximum and minimum speeds can be
selected by pressing S4 (+) for maximum (H)
and S5 (-) for minimum (L).
3. The other two digits show the flow temperature
at maximum or minimum firing rate. Press S6
(OK) to exit ‘test mode’ and return to the display.
Figure 8.9.2 - combustion test parameters
