24
10 - ELECTRICAL
WARNING
Electrical shock hazard. Turn OFF electrical power
supply at service panel before making electrical
connections. Failure to do so could result in death
or serious injury.
!
10.1 Electrical Wiring
See wiring diagrams on the following pages for
details.
• J-box and circulator harness are shipped in parts box,
and may be wired on either side of boiler as desired.
• Electrically bond boiler to ground in accordance with
requirements of authority having jurisdiction. Refer to:
USA -
National Electrical Code
, ANSI/NFPA 70.
• Aluminum wiring /conductors not permitted.
10.2 Thermostat Installation
1.
Use a thermostat with dry contacts which does not pull
any load from the control. Use a separate transformer
for zone valve wiring.
2.
Thermostat should be installed on inside wall about
four feet above floor.
3.
NEVER install thermostat on outside wall.
4.
Do not install thermostat where it will be affected by
drafts, hot or cold pipes, sunlight, lighting fixtures,
televisions, fireplace, or chimney.
5.
Check thermostat operation by raising and lowering
thermostat setting as required to start and stop
burners.
6.
Instructions for final adjustment of thermostat
are packaged with thermostat (adjusting heating
anticipator, calibration, etc.)
7.
Thermostat's heat anticipator must be adjusted to
match total current draw of all controls associated with
boiler during heating cycle.
PN 240012809, Rev. C [11/15/2020]
