Field controls CK-51 User Manual
24 VAC SYSTEM CONTROL KIT
Model: CK-51
Designed for use on SWG Series Power Vent Hoods for controlling Natural
Gas and L.P. Gas State Industries water heaters.
ITEMS INCLUDED IN KIT:
1) Junction box with mounted pressure switch and relay base.
1) 24 VAC Relay
1) Ft. Length of 1/4 inch aluminum tubing
1) 1/4 inch tubing connector
1) Flexible conduit connector
1) GSK-3 Spillage Switch
DO NOT DESTROY
THESE INSTRUCTIONS MUST REMAIN WITH EQUIPMENT
MOUNTING JUNCTION BOX
The junction box can be mounted at the venter or remotely mounted away
from the venter. (See Figure 1 & Figure 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-51 junction box and secure with fastening nut. If remote mounting the
CK-51 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-51 junction box or installer supplied junction box
onto the wall or floor joist without straining the flexible conduit. Fasten the
CK-51 junction box through the four dimpled locations on the base of the
box. (See Figure 3)
GSK-3 SAFETY SWITCH INSTALLATION
Installation of a secondary SAFETY SWITCH is recommended by LP and
Natural gas fired systems with a draft hood. This device is installed to detect
flue gas spillage from a blocked flue system and/or inadequate draft.
1. Mount spillage switch on the draft hood. (See Figure 4)
2. Route lead wires along the appliance wall with an accepted wiring
enclosure in accordance with the National Electrical Code and applicable
local codes, keeping the wires away from any HOT surface area.
3. Wire the safety spillage switch into one side of the thermostat circuit.
Refer to unit wiring instructions.
4. After installing the safety spillage switch, check the amperage through the
thermostat circuit and adjust the thermostat anticipator accordingly.
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.
PRESSURE SWITCH SENSING TUBE INSTALLATION
1. Attach the 1/4 inch tubing connector to the pressure tube on the SWG
Venter. (See Figure 3)
2. Connect the supplied 1/4" aluminum tubing to the tubing connector.
Route the tubing to the CK-51 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-51 Junction Box, use a 1/4" OD copper, aluminum or
plastic tubing and route the tubing to avoid contact with any heat source.
Refer to the SWG Venter Installation Instructions for setting system airflow.
Figure 1
Figure 2
Figure 3
Figure 4
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WIRING (See Diagrams A-C State Industries Water Heaters)
Diagram A
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 over current 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 I wiring or equivalent methods.
NOTE: Route low voltage wiring through the supplied plastic grommet.
MINIMUM LINE VOLTAGE WIRE NO. 14 AWG
1. You must provide all wiring of the proper size outside of the water heater. You must obey local codes and electric
utility requirements when you intall this wiring.
2. This water heater must be electrically ‘grounded” by the installer. Using a screw on the water heater junction box, a
wire must be run to connect the water heater to an uninterrupted metallic ground.
3. This appliance must be electrically grounded in accordance with local codes or, in the absence of local codes, with the
latest edition of the National Electrical Code ANSI/NFPA No. 70.
NOTE: If any of the original wire as supplied with the water heater must be replaced, it must be replaced with 105°C
thermoplastic AWM wire or its equivalent.
Models: F75-120, F75-140, F30-150, F80-180, F30-199, F80-199, F100-199ES, F100-199ET, F30-225, F75-250, F100260ES, F100-260ET, F75-300, F70-360
NATURAL AND PROPANE (L.P.) MODELS
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.
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