Field controls CK-50 User Manual

CONTROL KIT

Model: CK-50

Designed for use with the SWG Series Power Venter for

controlling Natural Gas or L.P. Gas Lochinvar appliances.

ITEMS INCLUDED IN KIT:

1 - Junction box with mounted pressure switch and relays
1 - Fan control gas pressure switch
1 - 2 ft. length of 1/4 inch aluminum tubing
2 - Flexible conduit connector
1 - 1/4 inch tubing connector

2630 Airport Road • Kinston, NC 28504

Phone: [phone] • FAX: [phone]

www.fieldcontrols.com

INSTALLATION AND ADJUSTMENTS

Figure 2

Figure 1

Figure 3

Figure 4

MOUNTING JUNCTION BOX:

The junction box can be mounted at the venter or remotely
mounted away from the venter. (See Fig. 1 & Fig. 2)

1. Remove one of the knockouts from the side of the junction
box where the pressure switch is mounted. Install the
flexible conduit connector onto the CK-50 junction box
and secure with fastening nut. If remote mounting the CK­50 junction box, mount the flexible conduit connector onto
a 2" x 4" installer supplied junction box.

2. Fasten the flexible conduit from the SWG Venter into the conduit
connector. Mount the CK-50 junction box or installer supplied junction
box onto the wall or floor joist without straining the flexible conduit.
Fasten the CK-50 junction box through the four dimpled locations on
the base of the box. (See Fig. 3)

PRESSURE SWITCH SENSING TUBE INSTALLATION:

1. Attach the 1/4 inch tubing connector to the pressure tube on
the SWG Venter. (See Fig. 3)

2. Connect the supplied 1/4" aluminum tubing to the tubing
connector. Route the tubing to the CK-50 junction box and
connect the tubing to the pressure switch. When routing the
tubing, avoid kinking the tubing by bending the tubing too
sharply.

For remote mounted CK-50 Junction Box, use a 1/4" OD copper,
aluminum or plastic tubing and route the tubing to avoid contact
with any heat source.

PROVING SWITCH ADJUSTMENTS:

After proper air flow is established, the pressure switch adjustment is
made by turning the pressure switch adjustment screw clockwise
(See Fig. 4) until burner operation stops. Turn the adjustment screw
counterclockwise until burner ignites. Turn the adjustment screw an
additional 1/4 to 3/4 turn counterclockwise to ensure adequate switch
adjustment.

WARNING: Failure to properly adjust the pressure switch as
specified above could lead to improper operation of the
pressure switch which will result in a hazardous condition and
bodily harm!

THERMOSTAT HEAT ANTICIPATOR ADJUSTMENT:

After venting kit installation and checkout, check the amperage current draw through the thermostat
circuit and adjust the thermostat anticipator accordingly.

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