Viessmann VITOROND 100 Installation And Service Instructions Manual page 54

Connections
Burner Set-up (Riello)
Electrical connections (with Vitotronic control) (continued)
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.
Burner wiring harness (supplied)
Viessmann #41-plug
control connection
B4
BL
O S3
BK
T2
T1
W
N
G
G
R L1
Fig. 53
Legend
BL Blue
O Orange
BK Black
W White
G Green
R Red
54
(continued)
Installations must follow these codes
and requirements:
- National Electrical Code, ANSI/NFPA
70, latest edition and any addtional
national, state or local codes.
- In Canada, CSA C22.1 Canadian
Electrical Code Part 1 and any local
codes.
Closed end connectors are factory installed on
RED, ORANGE and BLUE wires. These RED,
ORANGE and BLUE wires may or may not be used
in your burner application. See wiring diagram in
this manual which is specific to your burner
application. Do not remove or cut any of the
closed end connectors of the RED, ORANGE or
BLUE wires, unless it is necessary to do so.
RED wire is live (120VAC) at all times. Do not
remove or cut its closed end connector unless it is
necessary to do so. Failure to heed the above
instructions may cause severe personal injury or
loss of life.
Jumper
RED
- 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.
18" *