▶
Press [+].
✓
Factory setting operating point P
0
(ignition load) is displayed.
▶
Press and hold [L/A] and set air damper setting using the [–] or [+] key.
▶
Press and hold [G] and set gas butterfly valve setting using the [–] or [+] key.
▶
Press [+].
✓
Combustion manager is preset.
2. Check sequence of operation
▶
Open gas isolating valve.
✓
Gas pressure in gas valve train increases.
▶
Close isolating valve.
▶
Plug in bridging plug No. 7 on combustion manager.
✓
Burner starts.
▶
Check sequence of operation:
▪
Valves open.
▪
Gas pressure switch reacts.
▪
Burner start is interrupted.
▪
Low gas program starts.
▶
Unplug 7 pole connection plug and plug it in again.
✓
Low gas program is interrupted.
3. Adjusting the operating points
If a controlled shutdown or lockout occurs during setting:
▶
Press [–] and [+] simultaneously.
▶
Then press [+] key.
✓
Combustion manager changes to setting level.
▶
Open gas isolating valve.
▶
Press [–] and [+] simultaneously.
✓
The display shows
E ACCESS
.
Installation and operating instruction
Replacing combustion manager W-FM 20 … 24 with W-FM 25
6 Commissioning
83294002 • 2/2014-11 • La
34-70
Summary of Contents for W-FM 25
Page 71: ...83294002 2 2014 11 La ...
