Commissioning - Main ECO ELITE COMBI 25 Installation & Service Manual

Screw
Pump
Fig. 35
Selector Switch
Display
Reset
Central Heating
Temperature Control
Fig. 37
28
© Baxi Heating UK Ltd 2015
Heat Exchanger
Automatic Air Vent
Fig. 34
Pump
Automatic Air
Vent
1
0
bar
Fig. 36
1
0
Domestic Hot Water
Temperature Control
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. 34).
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. 36) 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".
2
10. Test for gas soundness.
3
4 11. Hinge the facia panel upwards and refit the case front panel.
Tighten the securing screws.
12. Having checked:
Pressure Gauge
2
Proceed to put the boiler into operation as follows:
3
4
bar
11. The Combustion Check procedure as shown by the chart
in 10.2 is mandatory. The method of setting the boiler to
operate at maximum and minimum rates to comply with the
procedure is described below.
12. Ensure that all external controls are calling for heat. The
actual current boiler temperature is shown on the display.
13. Turn both control knobs fully anticlockwise, then quickly
turn the right hand knob 1/4 clockwise twice and back fully
anticlockwise (Fig. 37).
14. The display will now alternate between 'SF' and the current
boiler temperature and both green LEDs will flash.
15. 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.
16. The display will show '00', indicating maximum rate, then
revert to 'P ' alternating with the current boiler temperature.
17. 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.
18. 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.

10.0 Commissioning

10.1 Commissioning the Boiler
IMPORTANT: The heat exchanger air vent on top of the
boiler (Fig. 34) MUST be opened before filling the primary
system.
• 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.