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10
A. GENERAL
All electrical wiring shall be done in accordance with the
National Electrical Code and Local Requirements. Single
pole switches including those of safety controls or
protective devices shall not be wired in a grounded line.
B. BURNER WIRING
1. See Section 5 for mounting burner.
2 Install junction box, limit harness, and Heyco
bushing, each located in the trim carton. See Figure
4.1. Mount junction box to the holes in the left side
of jacket with (2) #10 x 1/2" sheet metal screws.
Attach Heyco bushing to 7/8" knockout in front side
of junction box. Connect limit harness to 7/8"
knockout on top of junction box and insert limit
harness Molex connector into Heyco bushing until it
snaps firmly in place.
3. Install burner harness located in the burner carton.
Beckett or Carlin
– EC7022 Harness
(21" conduit)
Riello
– EC7023 Harness (28" conduit)
4. For complete information on servicing and
adjustment of controls, refer to the attached control
specification sheets.
5. See the following Wiring Diagrams:
Figure 4.2 - Steam Boilers with Float LWCO
Figure 4.3 - Steam Boilers with Probe LWCO
Figure 4.4 - Water Boilers
Figure 4.5 - Zoning with Circulators
Figure 4.6 - Zoning with Zone Valves
Figure 4.7 - Partner with Circulator
4. ELECTRICAL
ELECTRICAL
Improper installation of burner
harness can allow burner to energize
with burner mounting plate open,
creating a severe burn hazard to
boiler maintenance personnel.
WARNING
Figure 4.1: Junction Box Wiring