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Connections
Burner Set-up (Beckett)
Wiring diagram (with Vitotronic control)
WARNING
Electric shock hazard. Can cause
severe personal injury or loss of life if
power source, including service
switch on boiler, is not disconnected
before installing or servicing.
Blue and orange wires not used in this
application. DO NOT cut or remove closed
end connector from the wires.
41
41
Legend
Y
Yellow
BL
Blue
BK
Black
O
Orange
W
White
G
Green / Ground
R
Red
GY
Gray
BR
Brown
V
Violet
Vitotronic Control
(Refer to corresponding Vitotronic Control manual)
Fig. 8
10
(continued)
Installations must follow these codes
and requirements:
- National Electrical Code, ANSI/NFPA
70, latest edition and any additional
national, state or local codes.
- In Canada, CSA C22.1 Canadian
Electrical Code Part 1 and any local
codes.
2
G
BL
O
BK
R
W
Factory
installed
jumper
Refer to Vitotronic
200/300 (KW2/KW3)
for alternate connection
location of LWCO.
120 VAC
power
supply
2
to boiler
120 VAC receptacle
(field supplied)
1
2
Burner junction box
R
BK
W
V
BL
T
O
O
T
Y
Y
120 VAC
1
power supply
installer must
provide 15A
overcurrent
protection
Main
ON/OFF
switch
(field supplied)
Low water
cut-off
(if required)
(field supplied)
Power supply. Provide disconnect
means and overload protection as
required.
Control case must be connected
to earth ground.
- Wiring must be N.E.C. Class 1. If
original wire as supplied with boiler
must be replaced, type 105°C wire
or equivalent must be used. Supply
wiring to boiler and additional control
wiring must be 14 ga. or heavier.
- Provide electrical ground at boiler as
required by codes.
WARNING
Ensure that the burner cycles ON and
OFF on proper call for heat before
leaving the job site. Failure to do so
may lead to boiler runaway situation,
which may lead to property damage,
personal injury or death.
Legend
Oil solenoid valve
Ignition transformer
Burner motor
CAD cell flame detector
Burner grounding screw
R7184 Series primary control
with post-purge (factory default
setting: 30 sec. - can be field
adjusted; see Beckett burner
manual)
Factory-installed jumper
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