Electrical, Warning – PB Heat WV Series User Manual

Page 11

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9

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.

3. Install burner harness located in the burner carton.

Beckett or Carlin – PP7024 Harness

(11-1/2" conduit)

Riello – PP7023 Harness (17-1/2" 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 - 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

4. ELECTRICAL

ELECTRICAL

Figure 4.1: Junction Box Wiring, Steam and Knockdown Water Boilers

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

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