Field Controls 46086300 Assembly instructions

GAS SPILLAGE SENSING KIT

Model: GSK-3

Installation of a spillage SAFETY Switch is recommended for

LP and Natural gas fired systems with draft hoods, draft

diverter, and gas barometric draft controls. This device is

installed to detect flue gas spillage caused by a blocked flue

system and/or inadequate draft. This device MUST be installed

by a qualified installer in accordance with the manufacturer's

installation instructions. Wiring MUST be in accordance with the

National Electrical Code and applicable local codes.

Before and after adding this safety control on existing

appliances, an installation inspection in accordance with the

National Fuel Gas Code 54, Z223.1 Appendix H should be

performed and a combustion analysis is recommended to

determine the operating condition of the appliance.

CAUTION: Disconnect Electrical Power When Wiring Spillage

Switch

Page 2

INSTALLATION ON DRAFT HOODS

IN-LINE HORIZONTAL DRAFT HOOD (See Figures 1 & 2)

1. Two (2) switches are recommended on these hoods. Mount the

switches approximately 2 1/2 inches from the opposite ends and

sides of the draft hood opening. (See Figure 1)

2. The switch should not contact the metal. They should be mounted at

least 3/4 inch below the hood opening. (See Figure 2) Mount with

supplied sheet metal screw.

BUILT-IN DRAFT HOOD (See Figures 3 & 4)

1. Two (2) switches are recommended on appliances without a factory

supplied spill switch. Mount the switches approximately 3 inches

from the side of the draft hood opening and the second switch (if

used) 3 inches from the opposite side of the draft hood. (See Figure

3) If the appliance has a factory built-in switch, mount a single switch

3 inches from the side opposite the factory switch.

2. The switch should not contact the metal. They should be mounted at

least 1 inch below the hood opening. (See Figure 4) Mount with

supplied sheet metal screw.

VERTICAL DRAFT HOOD

(See Figures 5 & 6 or Figure 13 for water heaters)

1. Two (2) switches are recommended on appliances without a factory

supplied spill switch. Mount the spill switch onto the bottom edge of

the draft hood and the second switch (if used) approximately 90

degrees from the first switch or 90 degrees from the factory supplied

switch. (See Figure 5)

2. The switch should not contact the metal. They should be mounted at

least 3/4 inch below the hood opening. (See Figure 6) Mount with

supplied sheet metal screw.

Figure 1

Figure 2

Figure 3

Figure 5 Figure 6

Figure 4

Page 3

DRAFT CONTROLS (See Figures 7 & 8)

NOTE: GSK style switches are designed for draft control models 4" MG1 through 9"

MG1. Larger size draft controls require the FTS Series switches.

1. Locate the spill switch along the bottom edge of the draft control ring. (See Figure 7)

Mark and drill a 5/32" dia. hole through the ring.

2. Mount the switch with the supplied #5-40 machine screw and nut. Note, the head of

the screw is to be on the inside of the ring. (See Figure 8)

3. Swing the gate to make sure the gate does not hit the screw head or the switch.

NOTE: Mounting the spill switch on the top of the draft control ring will function properly,

but will react slower during a block flue condition.

WIRING

CAUTION: When wiring the spillage

switch into the burner circuit route the

wiring and secure away from any hot

surface. Shut off all electrical power and

gas supply to the appliance before

working with any electrical connections.

24 VOLT APPLICATIONS

1. Disconnect the hot lead between the

thermostat or temperature control and

the TH terminal on the gas valve or

the TH,TH-W or 24V terminal on the

ignition module. Check the thermostat

anticipator (if applicable) circuit for

proper setting.

CAUTION: Never wire to the 24V

GND terminal.

2. Wire the spill switch or switches into

series with this circuit by wiring from

the thermostat or temperature control

to the spill switch or switches then to

the gas valve or ignition module. (See

Figure 9 & 10)

Figure 8

Figure 9

Figure 10

Figure 7

Page 4

750 MILLIVOLT PILOT GENERATOR APPLICATIONS

1. Disconnect the hot lead between the thermostat and the TH

terminal on the gas valve. On older bleed tube style

equipment split one lead of the E.C.O. (energy cut off)

circuit.

2. Wire the spill switch or switches into series with this circuit

by wiring from the thermostat to the spill switch or switches

then to the TH terminal on the gas valve. On older bleed

tube style equipment wire switches in series with one wire

of the E.C.O circuit. (See Figure 11)

30 MILLIVOLT WATER HEATER:

Two (2) switches are recommended for this application. The

application requires a TCA-1 Thermal Couple Junction block

(P/N 46082700 NOT INCLUDED) and a 6 foot length of 12 ga.

two (2) wire conductor (NOT INCLUDED) to wire between the

spill switches and the TCA-1.

CAUTION: Shut off gas supply before working on appliance.

1. Remove thermocouple from gas control valve. (See Figure

12)

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

the thermocouple into the bottom of the junction block.

3. Mount the two (2) spill switches onto the draft hood so the

switches do not contact any metal. (See Figure 13)

4. Connect the one terminal of each switch with 12 ga wire and then

connect it to the thermocouple junction block. Next,connect the two

remaining terminals together using a short length of 12 ga wire.

(See Figure 14)

5. Route and secure the wires to the water heater enclosure with acceptable hold down

tabs, keeping the wires away from any hot surface area.

SYSTEM CHECK-OUT PROCEDURE FOR GAS SPILLAGE SWITCH CONTROL

1. Shut off gas supply to appliance(s).

2. Block the flue pipe above the draft control, draft hood or draft diverter.

3. Re-establish gas supply to appliance and re-light pilot (if required).

4. Adjust thermostat to call for heat.

5. Flue gases should be emitting from draft control, draft diverter or draft

hood. Note the location of the most flue gas spillage. Allow approximately

2 minutes for the system to back up and the gas burner to shut down.

Wait 2 to 3 minutes, reset switches, and re-light pilot. If the spillage

switch dose not trip within the 2 minute period, relocate the switch onto

the area where the observed highest spillage occurred. Then perform this

test again.

CAUTION: If for any reason the system has shut down during normal

operation, the cause of the system failure should be investigated and

corrected before resetting the safety switch and relighting the pilot.

P/N 46086300 Rev C 11/00

Figure 12

Figure 13

Figure 14

Figure 11

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