36
11.0 Commissioning
© Baxi Heating UK Ltd 2014
11.1
Commissioning the Boiler
1. Reference should be made to BS:EN 12828 & 14336 when
commissioning the boiler.
2. At the time of commissioning, complete all relevant sections
of the Benchmark Checklist at the rear of this publications.
3. Open the mains water supply to the boiler.
4. Open all hot water taps to purge the DHW system.
5. Ensure that the filling loop is connected and open, then open
the heating flow and return valves on the boiler.
6. Open the screw on the automatic air vent on the pump body
(Fig. 59).
IMPORTANT:
If the boiler is installed at a high point in the
system it is strongly recommended that Automatic Air Vent
Kit 720004701 is fitted. Ensure that this vent is open.
7. The system must be flushed in accordance with BS 7593 (see
Section 6.2) and the flushing agent manufacturers instructions.
8. Pressurise the system to 1.5 bar (Fig. 60) then close and
disconnect the filling loop.
9. Turn the gas supply on and purge according to in GB BS 6891
and in IE I.S. 813 “Domestic Gas Installations”.
10. Test for gas tightness.
11. Hinge the facia panel upwards and refit the case front panel.
Tighten the securing screws.
12. Having checked:
• That the boiler has been installed in accordance with
these instructions.
• The integrity of the flue system and the flue seals.
• The integrity of the boiler combustion circuit and the
relevant seals.
Proceed to put the boiler into operation as follows:
13.
The Combustion Check procedure as shown by the chart
in 11.2 is mandatory from April 2014. The method of setting
the boiler to operate at maximum and minimum rates to
comply with the procedure is described below.
14. Ensure that all external controls are calling for heat. The
actual current boiler temperature is shown on the display.
15. Turn both control knobs fully anticlockwise, then quickly turn
the right hand knob 1/4 clockwise twice and back fully
anticlockwise.
16. The display will now alternate between ‘SF’ and the current
boiler temperature and both green LEDs will flash.
17.
To set to maximum rate.
Turn the left hand knob fully clockwise. As the knob is turned
the display will change, indicating the fan speed.
18. The display will show ‘00’, indicating maximum rate, then
revert to ‘P ‘ alternating with the current boiler temperature.
19.
To set to minimum rate.
Turn the left hand knob fully anti-clockwise. As the knob is
turned the display will change, indicating the fan speed. When
the display reads ‘ 0’ the boiler runs at minimum rate.
20. This function is maintained for 20 minutes unless the
maximum CH temperature is exceeded. The function can be
disabled at any time by turning the right hand knob.
Pump
Automatic Air
Vent
Pressure Gauge
Screw
bar
0
1
2
3
4
Fig. 59
Selector Switch
Central Heating
Temperature Control
Domestic Hot Water
Temperature Control
Reset
1
2
3
4
5
PM
7
8
9
10
11
12
1
2
3
4
5
AM
7
8
9
10
11
12
0
bar
0
1
2
3
4
Pump
Fig. 61
Fig. 60
Display
