Field Controls B794664 User Manual

SYSTEM CONTROL KIT

Model: CK-20F and CK-20FG

(NOTE: CK-20FG units are designed for the Flame Guard units built by

American Water Heater. All other manufacturers use CK-20F)

Designed for use with the SWG Series Power Venter for controlling 30-millivolt controlled Natural or LP Gas
appliances with a pressure tap port in the Gas Valve. This kit may also be used with the PVG series sidewall
Power Venters, DI series Draft Inducers, and CAS-4 Combustion Air System. The included junction box is not
required when using a PVG or CAS-4.

ITEMS INCLUDED IN KIT

1- Junction box
1- Fan control gas pressure switch with built in post purge option

1

1­ 1-

⁄8" NPT x 3" pipe nipple

1

⁄8" NPT pipe tee
1- TCA-1 Thermocouple Adapter (CK-20F)
1- TCA-2 Left Handed Thermocouple Adapter (CK-20FG)
1- 6 ft. length of 12-2 wire
1- 12" jumper wire
1- Flexible conduit connector
2- GSK-3 Spillage Switches

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:

www.fieldcontrols.com

Installation Date:

MOUNTING JUNCTION BOX

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

Remove one of the knockouts from the side of the junction box. Install the flexible conduit connector onto the 1.
CK-20F junction box and secure with fastening nut. If remote mounting the CK-20F junction box, mount the
flexible conduit connector onto a 2" x 4" installer supplied junction box.

Fasten the flexible conduit from the SWG Venter into the conduit connector. Mount the CK-20F junction box or 2.
installer supplied junction box onto the wall or floor joist without straining the flexible conduit. Fasten the CK­20F junction box through the four dimpled locations on the base of the box. (See Figure 1)

page 2

Figure 1

Figure 2

INSTALLATION OF GAS PRESSURE SWITCH
CAUTION: Check gas control valve pressure.

Pressure must not exceed 14” WC pressure.

Remove pressure tap plug in gas valve. 1.
(See Figure 3) NOTE: If installing on an existing
appliance, shut off gas supply to gas valve before
plug removal.

1

Replace the pressure tap plug with the 2.

⁄8” pipe
nipple and pipe tee. Install pressure tap plug at the
bottom of the pipe tee. (See Figure 4)

Install the gas pressure switch into the side of the 3.
pipe tee. The gas pressure switch is supplied with
a restrictor orifice in the inlet and outlet ports. With
these orifices in place, the switch does not need to
be vented. This feature complies with current ANSI
standards for gas regulators. (See Figure 5)

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.

Figure 3

page 3

Figure 4

Figure 5

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.

Remove the thermocouple from the gas control valve. 1.
(See Figure 3)

Thread the junction block into the thermocouple port and 2.
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)

Mount the two spillage switches onto the draft hood 3.
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)

Route jacketed lead wires or accepted wiring enclosure on 4.
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.

Figure 6

page 4

Figure 7

WIRING
CAUTION: Disconnect electrical power when wiring power venter.

Wire the venter motor and controls in accordance with the National Electrical Code, manufacturer’s
recommendations and/or applicable local codes. Units must be grounded. Check ground circuit to make
certain that the unit has been properly grounded. The wiring should be protected by an overcurrent circuit
device rated at 15 amperes. CAUTION must be taken to ensure that the wiring does not come into contact
with any heat source. All line voltage and safety control circuits between the venter and the appliance must be
wired in accordance with the National Electrical Code for class one wiring or equivalent methods. Route the
venter motor and control wiring with an appropriate wiring method. Refer to Wiring Diagram A.

Refer to the SWG Venter Installation Instructions for setting system airflow.

page 5

Diagram A

SYSTEM CONTROL CHECK OUT PROCEDURES:
GAS PRESSURE SWITCH FOR WATER HEATER

Follow water heater manufacturer’s instructions to light pilot. Turn the gas control valve to the ON position. 1.
Adjust the thermostat to call for heat, which will energize the venter motor. (May see a 1 to 8 second delay of
venter motor)

Turn gas control valve to the PILOT position, which will start a 1 to 3 minute post purge of the venter motor.2.
Repeat Steps 1 and 2 to ensure proper operation.3.

SPILLAGE SWITCHES

Allow the water heater to heat up to operating temperature, then disconnect the power to the gas 1.
pressure switch.

Adjust the thermostat to call for heat with the venter inoperative. Allow approximately 2 minutes of flue 2.
gas spillage for the spillage switches to sense the spillage and disrupt the thermocouple circuit, halting the
gas flow to the pilot and burner.

Wait 2 to 3 minutes. Reset the spillage switches and light the pilot, then perform a second safety spillage 3.
test. (Steps 1 and 2)

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.

page 6

TROUBLE SHOOTING HINTS

Venter does not activate when thermostat calls for heat:1.

Check wiring.a.
Check gas pressure switch for continuity across terminals when gas valve is pressurized.b.
Check gas pressure.c.

Flue gas odor:2.

Check system draft.a.
Check for negative pressure in building.b.

Pilot will not stay lit on water heater:3.

Solder all spillage switch wire terminal connections.a.
Check reset buttons on spillage switches.b.
Use 12 gauge wire for all spillage switch wiring.c.
Check for interruption of power supply.d.

REPAIR AND REPLACEMENT PARTS LIST

REPAIR AND REPLACEMENT PARTS LIST

DESCRIPTION PART NUMBER

Gas Pressure Switch 46284200

GSK-3 Spillage Switch 46086400

Thermocouple Junction Box 46082700

page 7

LIMITED WARRANTY

Field Controls, LLC (“Company”) warrants that its products shall be free from defects in material and workmanship
under normal use for the limited period indicated, from the date of manufacture, subject to the provisions 1-8 below.

Eighteen (18) months

All Field Controls Products (except for those listed below as 5 years or 90 days).

Five (5) years

Field Controls Direct Vent Systems (FDVS), Field Oil Vent Kits (FOVP), and ComboVents (CV).

Field Controls warrants that the products listed below shall be free from defects in material and workmanship under
normal use for the limited period indicated, from the date of purchase by the consumer, subject to the provisions

1-8 below.

Ninety (90) days
UV lamps/bulbs

Provisions:

1. During the limited warranty period, Company, or its authorized service representative, will repair or replace, at Company’s
option, without charge, a defective Product. Product that is repaired may be repaired with new or refurbished replacement
parts. Product that is replaced may be replaced with a new or refurbished product of the same or similar design. Company
will return repaired or replacement Product to customer in working condition. Labor charges are not covered as part of the
limited warranty.

2. With regard to UV lamps/bulbs, customer shall be required to include a "valid proof of purchase" (sales receipt) identifying
the Product purchased (Product model or accurate date code information) and the date the Product(s) was purchased.

3. Product whose warranty/quality stickers, Product serial number plates or electronic serial numbers have been removed,
altered or rendered illegible shall not be covered under the limited warranty.

4. Defective Product must be returned to Company, postage prepaid.

5. IN NO EVENT SHALL COMPANY BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR SIMILAR
DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOST PROFITS OR REVENUE, INABILITY TO USE PRODUCT, OR OTHER
ASSOCIATED EQUIPMENT, THE COST OF SUBSTITUTE EQUIPMENT, AND CLAIMS BY THIRD PARTIES) RESULTING FROM
THE USE OF PRODUCT. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation or exclusion may not apply to you.

6. THIS WARRANTY AND REMEDIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, REMEDIES AND
CONDITIONS, WHETHER ORAL, WRITTEN, EXPRESS, STATUTORY OR IMPLIED. TO THE EXTENT PERMITTED BY LAW,
COMPANY DISCLAIMS ALL IMPLIED AND STATUTORY WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.

7. Company makes no warranty of any kind in regard to other manufacturer’s products distributed by Company. Company will
pass on all warranties made by the manufacturer and where possible, will expedite the claim on behalf of the customer, but
ultimately, responsibility for disposition of the warranty claim lies with the manufacturer.

8. Product that has been subjected to misuse, accident, shipping or other physical damage, improper installation or application,
abnormal operation or handling, neglect, fire, water or other liquid intrusion are not covered by the warranty.

© Field Controls, LLC P/N 46285000 Rev H 08/09

Phone: [phone] • Fax: [phone]

www.fieldcontrols.com