Field Controls B794654 User Manual

WATER HEATER CONTROL KIT

Model: CK-21

Designed for use on SWG Series Power Venters for controlling Natural
Gas and LP Gas Instantaneous Water Heaters with a pressure tap port.

ITEMS INCLUDED IN KIT:

1- Junction box
1- Fan control gas pressure switch

1

1­ 1­ 1- 6 ft length of 12-2 wire
1- 8" jumper wire
1- Flexible conduit connector
2- Spillage Switches
3- Adhesive Tabs

READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY BEFORE PROCEEDING WITH THE INSTALLATION.

This device MUST be installed by a qualified agency in accordance with the manufacturer's installation instructions. The definition of
a qualified agency is: any individual, firm, corporation or company which either in person or through a representative is engaged
in, and is responsible for, the installation and operation of HVAC appliances, who is experienced in such work, familiar with all the
precautions required, and has complied with all the requirements of the authority having jurisdiction.

Please retain these instructions after installation.

Installed By: Phone:

⁄8" NPT x 3" pipe nipple

1

⁄8" NPT pipe tee

Installation Date:

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MOUNTING JUNCTION BOX

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

Remove one of the knockouts from the side of 1.
the junction box where the pressure switch is
mounted. Install the flexible conduit connector
onto the CK-21 junction box and secure with
fastening nut. If remote mounting the
CK-21 junction box, mount the flexible conduit
connector onto a 2" x 4" installer supplied
junction box.

Fasten the flexible conduit from the SWG Venter 2.
into the conduit connector. Mount the CK-21
junction box or installer supplied junction box
onto the wall or floor joist without straining the
flexible conduit. Fasten the CK-21 junction box
through the four dimpled locations on the base
of the box. (See Figure 3)

Figure 1

Figure 2

Figure 3

page 2

INSTALLATION OF GAS PRESSURE SWITCH
CAUTION: Maximum gas pressure MUST NOT exceed 14" W.C. Pressure. Gas supply must be shut off

before working on piping systems.
NOTE: Seal all pipe connections with pipe thread sealant.

Remove pressure tap plug in manifold.1.

1

Install 2.
pressure tap plug. Then install the 3" x

⁄8" NPT Street elbow (if required for mounting the gas pressure switch vertically) in place of the

1

⁄8" NPT nipple, pipe tee and pressure tap plug. (See Figure 4)

Install the gas pressure switch into the side of the pipe tee. Position the switch vent, on the side of the 3.
switch, down.

CAUTION: If for any reason the system has shut down during operation, the cause of the system failure should
be investigated and corrected before resetting the safety switch and restarting the system.

NOTE: Gas Pressure Switch MUST be mounted vertically.

page 3

Figure 4