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FIGURE 7.
EXAMPLE WIRING DIAGRAM FOR MODULATING BURNER w/ INTERRUPTED PILOT
REMOTE RESET AND
EMERGENCY
SHUTDOWN
1
HOT
Disconnect
Means and
2
overload
protection
required
TAB
NEUTRAL
IMPORTANT
A good earth
ground is
essential
1. Pilot is only on during Ignition.
2. MIN represents the LOW FIRE position.
3. OPEN represents the HIGH FIRE position.
4. POC represents Proof of Closure – otherwise known as Fuel Valve End Switch.
5. Recycling Interlocks are general one or more limits switches in series (High/Low gas pressure, Oil temperature, etc) that are used to stop
the burner when the limit switch opens and restart when the limit switch recloses.
6. Non-Recycling Interlocks are general one or more limits switches in series (High steam pressure, Low water, etc) that are used to
stop the burner when the limit switch opens and prevent it from restarting until both the limit switch recloses and the manual/remote reset
is activated.
7. CAST is defined as the Combustion Air Switch Test.
8. CAP is defined as the Combustion Air Prove.
9. Combustion Air Blower Terminals 6 & 7 are tied internally.
10. If equipped, the ECONOMY position may be used to fully close the air damper. Thus, reducing heat losses.
All wiring must comply with
regional and local codes.
Caution: All safety limit switches should
be approved as limit controls and should
be wired directly in the circuit of the
Flame Safeguard control. The use of
electronic switches to close interlock
circuits may cause erratic operation.
24
RECYCLING
NON-RECYCLING
INTERLOCKS
RUNNING INTERLOCKS
T
P
LOCKOUT
RECYCLE
REMOTE
LIMITS
LIMITS
RESET
21
5
4
BURNERPRO SYSTEM CONFIGURATION
BP230UV-S1, BP230UV-S2, & BP230UV-S3 SERIES
3
7
6
8
11
COMBUSTION
ALARM
AIR BLOWER
FEEDBACK
ALARM
BLOWER
T
P
COMBUSTION
AIR SWITCH
NO
C
NC
POC (FVES)
POC
CAST
CAP
12
14
13
10
9
20
MIN
OPEN
ECONOMY
RELEASE TO
MODULATE
MODULATOR
HOT
MAINS
NEUTRAL
230VAC 50Hz
SERVICE
DISCONNECT
EARTH
GROUND
Proper grounding is necessary.
Wiring base ground terminal
should be attached to grounded
bonding screw in cabinet
UV SCANNER
+
S1
S2
22
23
16
17
18
19
N/C
PV
MV
IGN
PILOT
MAIN
XFMR
VALVE
VALVE
PILOTED
Typical Mains connection
OPTIONAL
LIMIT
BURNER
EXTERNAL
SWITCH
SWITCH
FUSE
15
NOT
USED
24
Terminals
1
2
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