Commissioning; Initial Lighting - DeDietrich 310 ECO Series Installation And Operating Manual

10.0 COMMISSIONING

Warning:
If you do not follow the commissioning instructions exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.

10.1 Initial lighting

1.  Isolate main power supply
2. Remove the casing on the inspection side.
3. Open the main gas valve.
4. Check the electrical connections including
earth.
5. Fill the boiler and the system with water
(approximate > 11 psi).
6. Vent all air from the system.
7. Fill the siphon assembly with water.
8. Check the flue gas discharge connection
and air inlet duct or air supply connections.
9. Vent the gas pipe, Open the gas cocks to
the boiler.
10. Check the inlet gas pressure PI (see fig.
23). Ensure sufficient gas supply pressure
> 3.5 "w.c.
11. Check the gas connections for gas leaks.
12. Switch on the main power supply to the
boiler.
13. Switch on the boiler operating switch.
14. Switch on the heating pump and check the
installation position and direction of
rotation.
Fig. 23 Gas valve (multiblock) adjustments – Artist impression
De Dietrich Gas 310/610 ECO
15. Adjust the boiler controls to heat demand.
16. The boiler should start with the run
sequence indicated in the code-display:
 = Boiler neutral position (No heat
demand)
 = Butterfly valve open, if connected;
Wait for minimum gas pressure switch to
close: Neutral position check of air
pressure differential sensor; Vent damper
opens (if applicable); The fan runs and the
boiler waits until sufficient air transport is
established; the air pressure differential
sensor must switch to guarantee sufficient
airflow.
= Gas valve leak proving system test
(Only if option employed)
 = Pre-purging, drives to high fire position
 = Heating pump starts running; drives to
ignition position.
 = Burner is firing a flame is detected
Fig. 24 flue gas measuring point
42