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3.8
Panel board description
13
14
16
1
15
1
"OFF - ON" switch
2
"ALARM SILENCE" button
3
Low air pressure switch (differential operation type)
4
Operator panel with LCD display
5
Burner terminal board "X1"
6
Control box for checking flame and air/fuel ratio
7
Ignition transformer "TA"
8
Terminal strip "X2" for oil valve
9
Fan motor contactor and thermal relay with reset button
10 Horn
11 "K2" relay
12 "K3" relay
13 "K5" relay
14 "K1" relay
15 Optional hole
16 Ground terminals
17 RWF55.5 modulator (with analog output 4-20 mA)
18 UV flame sensor
19 Holes for cables grommets for electrical wirings, accessories
and power supply (to be carried out by the installer)
20 "LOCAL-REMOTE" switch
21 "POWER ON" signal
22 "CALL FOR HEAT" signal
23 "ALARM" signal
24 "IGNITION ON" signal
25 "FUEL ON" signal
26 Auxiliary fuse
27 DIN bar available for accessories
20103379
Technical description of the burner
4
6
12
11
20
2
18
3
9
7
8
19
5
20108183
17
28 DIN bar for fuse holder step-down transformer and OCI
412.10 (available)
Two types of burner failure may occur:
Flame safeguard lock-out:
if the flame safeguard alarm 23)(Fig. 4) lights up, it indicates
that the burner is in lock-out. To reset, press the reset push-
button.
Motor trip:
release by pressing the push-button on thermal overload
9)(Fig. 4). See "Thermal relay calibration" on page 27.
10
GB
28
26
27
21
22
23
25
24
10
Fig. 4
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