Gordon Piatt Parts - Cams and Linkage Parts

Cams and Characterized Linkage Parts

Cams Assembly
901008-5500

Click here to download the detailed cam breakdown.

Characterized Linkage Adjustment Procedure

Factory checkout verifies there is freedom of movement in all linkages throughout the 90° travel of the modulating motor. For gas systems, the butterfly (throttle) valve is set at the slightly open position. For oil systems, the oil metering valve is set at a predetermined position, depending on the specific valve used. Both settings are normally adequate to facilitate start-up.

Adjustment of the characterized linkage should only be done after the burner has been successfully started- up and taken from low-fire to high-fire several times. Any necessary adjustments to the fuel control linkages during start-up should be done at a ball joint connector or linkage rod coupling. The boiler, or other appliance being fired, should be warm.

Generally, combustion readings should be taken at each of the nine (9) adjustment screws in the quadrant. AS A STARTING POINT, low and high fire flue gas composition should be in the tabulated range shown to the right:

CAUTION: There should be no more than 3/16" variation between adjacent screws.

FUEL LOW FIRE HIGH FIRE

CO₂ O₂ CO₂ O₂

Natural Gas 7.5-9 8.5-5 9-10.5 5-2.5

#2 Oil 9-11 8-1/2-5 11-12.5 6-3.5

The final fuel/air ratio curve must be determined on the basis of clean combustion at all firing rates. Sufficient combustion air must be available to keep the CO generated by a gas fire below 50 PPM at all rates. Smoke level on #2 oil should not exceed a #2 spot on the Bacharach scale.

Arm Follower
901007-6700

Cam Components

Part Number Description

110013-0000 Hold on screws

110254-0308 Dowel Pin

130510-1000 Bearing for arm follower

901006-5800 Arm

901007-6700 Arm Follower

901007-7000 Flexible Metal Roller Band

913000-6400 Spring Rod

913001-0400 Roller

924004-3000 Oil Linkage/Cam follower

924004-3100 Gas Linkage/Cam follower

Click here to download the detailed cam breakdown

Arm (Long)
901006-5800

*Control Swivels*
Part #	Thread Size
0804	1/4 - 20 x 7/16
0809	1/4 - 20 x 9/16
0808	1/4 - 28 x 9/16
0807	1/4 - 28 x 7/16
0805	5/16 - 24 x 41/64
0806	5/16 - 24 x 33/64

Control Swivel Material is C12L14 steel plated
with a zinc and clear chromate finish.

Linkage Control Quadrant
050784-0000
Gordon Piatt Linkage Control Quadrant 050784-0000

Gordon Piatt Louver Box

Linkage Part
Stand alone characterized cam
050784-0000

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Burner technology of Gordon-Piatt Energy Group, Inc. was purchased by John Zink Company, LLC, in October 2000. In 2009, a decision was made that the John Zink Company, LLC. will discontinue production of all Gordon-Piatt burners. Cici Boiler Rooms, Inc. is not a factory-authorized distributor of John Zink Gordon-Piatt brand products.