Connections
42
Burner Set-up (Beckett)
(continued)
Wiring diagram (with Vitotronic control)
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.
- 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.
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
If burner lock-out occurs, verify blocked
vent safety switch operation first.
5
6
7
1
0
4
4
v
1
.0
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.
WARNING
BK
W
G
R
Y
Y
O
BL
W
V
BK
R
O
BL
O
T
T
Block vent
safety switch (Canada Only)
Factory
installed Jumper
41
Vitotronic Control
(Refer to corresponding Vitotronic Control manual)
1
2
Refer to Vitotronic
200/300(KW2/KW3)
for alternate connection
location of LWCO.
41
1
2
2
Control case must be connected to earth ground.
Power supply. Provide disconnect means
and overload protection as required.
120 VAC
power
supply
to boiler
120 VAC receptacle
(field supplied)
120 VAC
power supply
installer must
provide 15A
overcurrent
protection
Main
ON/OFF
switch
(field supplied)
Low water
cut-off
(if required)
(field supplied)
G
L
1
T
1
T
2
N
S
3
B
4
O
B
L
W
B
K
G
R
VIESMANN
G
L
1
T
1
T
2
N
S
3
B
4
Fig. 40
Legend
Y
Yellow
BL
Blue
BK
Black
O
Orange
W
White
G
Green / Ground
R
Red
GY
Gray
BR
Brown
V
Violet
Blue and Orange wires not used
in this application, DO NOT cut
or remove Closed end connector
from the wires.
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,
property damage, and personal injury
or death.
WARNING
IMPORTANT