ELECTRICAL
4. ELECTRICAL
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 right side of jacket with (2) #10 x 1/2" sheet metal screws. Attach Heyco bushing to 7/8" knockout in left 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.
Improper installation of burner WARNING harness can allow burner to energize
with burner mounting plate open, creating a severe burn hazard to boiler maintenance personnel.
3. Install burner harness located in the burner carton.
Beckett or Carlin – PP7024 Harness
Riello – PP7023 Harness
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 - Water Boilers, Knockdown Figure 4.3 - Water Boilers, Packaged Figure 4.4 - Steam Boilers with Float LWCO Figure 4.5 - Steam Boilers with Probe LWCO Figure 4.6 - Zoning with Circulators
Figure 4.7 - Zoning with Zone Valves
Figure 4.1: Junction Box Wiring, Steam and Knockdown Water Boilers
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