Technical data

36
6.2 Commissioning of the appliance
After having carried out the above operations, the appliance can be commissioned.
1. Switch on the electrical supply to the appliance.
The appliance may carry out a self-test as determined by the controller:
2 (on service display).
After completing the self-test, a horizontal mark will appear in the service
display: - .
2. Press the on/off button in order to put the appliance into operation.
The boiler is heated and on the service display appear 3 , 4 , 7
.
3. Set the pump position on the basis of the set maximum power and the
resistance of the system on the water side. For the head of the pump and the
pressure loss of the appliance, see §7.5.
4. Set the room thermostat higher than the room temperature. The appliance will
now switch to CH operation: 5 on service display.
5. Check the gas-air control as described in §7.8 and §7.9, and adjust as
necessary.
6. Heat the system and the appliance to about 80ºC.
7. Check the temperature difference between the supply and return of the
appliance and the radiators. This should be about 20°C. At this stage set the
maximum power on the service panel. See Setting of maximum power. If
necessary, change the pump position and/or the radiator valves. The minimum
flow-through is:-
• 200 l/h at a set power of 7.0 kW
• 750 l/h at a set power of 26.2 kW
• 1150 l/h at a set power of 40.0 kW
8. Switch off the electrical supply to the appliance.
9. De-aerate the appliance and the system after cooling down. (fill up if
necessary)
10. Check the heating system for proper operation.
11. Check the burner's gas rate using the gas meter and a stopwatch.
HE26: On the maximum input of 32kW, the time taken to use 0.032 m³ (1.130
ft³) of gas should be 33 seconds (± 2 seconds). When timing 1 ft³ on the
meter, the equivalent is 29 seconds. When counting the litres over a 2 minute
period this is equivalent to 116 litres. The boiler can be set to the highest
output by simultaneously pressing the “Service” and “+“ buttons (twice) on
the operating panel until an H appears on the service display. Leave a hot tap
running to disperse the heat. Exit the test mode by simultaneously pressing
the “+” and “–“ buttons on the operating panel.
HE40C: On the maximum input of 47.1kW, the time taken to use 0.040 m³
(1.413 ft³) of gas should be 33 seconds (± 2 seconds). When timing 1 ft³ on
the meter, the equivalent is 23 seconds. When counting the litres over a 2
minute period this is equivalent to 145 litres. The boiler can be set to the
highest output by simultaneously pressing the “Service” and “+“ buttons
(twice) on the operating panel until an H appears on the service display.
Leave a hot tap running to disperse the heat. Exit the test mode by
simultaneously pressing the “+” and “–“ buttons on the operating panel.
12. Instruct the User about filling, de-aerating and the operation of the heating
system.
Note
The controls on the display
for ‘hw’ are not applicable
for the HE26 & HE40C.