Draft Hood Safety Switch Installation - Field Controls CK-20FV Quick Start Manual

DRAFT HOOD SAFETY SWITCH INSTALLATION

NOTE: 12 ga. wire must be used when wiring safety spillage
switches, to reduce the voltage drop in the thermocouple circuit.
1. Remove the thermocouple from the gas control valve.
(See Figure 3)
2. Thread the junction block into the thermocouple port and
thermocouple into the bottom of the junction block. Connect
lead wire from the junction block to the jacketed lead wires
or wire enclosed in an accepted wiring enclosure. (See
Figure 6) NOTE: Draft spillage switches must be mounted
90 degrees apart, and mounted opposite from the vent
outlet direction. (See Figure 7)
3. Mount the two spillage switches onto the draft hood
and connect inside terminals of switches with jumper
wire. Connect outside terminals to lead wires which are
connected to the thermocouple junction block.
(See Diagram A)
4. Route jacketed lead wires or accepted wiring enclosure on
the outside of the water heater enclosure. Secure them to
the enclosure with an accepted hold down tab. Keep wiring
away from any HOT surface area.
P/N 46285000 Rev K 01/18
page 4 of 8
Figure 6
Figure 7