Gas-Fired Products 75, 50 Removal of GAS Valve and Manifold Assembly, AIR Switch Pressure Check

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23.2) REMOVAL OF GAS VALVE AND MANIFOLD ASSEMBLY

Step 1

Step 3

Remove side access panel.

Open hinged access panel and disconnect wires from gas valve.

Step 2

Step 4

Loosen screws from manifold clamp and burner assembly.

Remove (6) screws from end panel. Rotate gas valve and manifold assembly slightly counter-clockwise and slide out from housing.

23.3) AIR SWITCH PRESSURE CHECK

Air	Connector
Switch	Tees

P1

+

	P2	P1	P2
	-	+
			-

	Temporary 1/4” ID Silicone /	-	+
	Temporary 1/4” ID Silicone /	0.65” WC
	plastic tubing for pressure	0.65” WC
	plastic tubing for pressure		Digital or Inclined
	test.		Digital or Inclined
			Water Manometer

scale 0-2”w.c.

Common “C”

Normally open “NO”

1.Open hinged access panel.

2.Add tubing to connect the air switch tubing P1 + and P2 - with the connector tees and the probes P1+ and P2+.

Form #43343530
July 08	–47–

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Contents Installation and Operation Instructions Table of Contents Safety Installer ResponsibilityInstallation Requirements General InformationFor Canada only High AltitudeMinimum Clearances to Combustibles Minimum Clearances to CombustiblesSpecifications Packing ListBurner Package Numbers Natural GASPTU 40-200 Body Package Descriptions Reflector, 4’ 11 ½’ Accessories End Reflector Accessory PackageExhaust Hood Package Typical Layouts PTU / PTS Series Emitter Length Body Length ModelTypical Assembly Layout Poisonous GAS and Soot HazardPTS Series Dimensions PTU Series Heater Assembly Joining of Tube SectionsTypical Assembly Overview PTU 40FT Shown Typical Suspension Methods Suspension HazardAssembly of Tube Sections CUT HazardAssembly of Extension Section MIN 8’ MAX 10’ Between HangersInserting Turbulators Adding Reflectors Ft. Turbulator SectionsAdding Optional 90º Elbow PTS only Adding Optional Corner Reflector PTS onlyAdding 180U-Bend PTU only Adding Optional U-BEND Reflector PTU onlyAttaching Burner BOX Assembly Connecting the Tiss System InstructionsEnd View Angle Mounted Heaters only GAS Connections and Regulations Do not USE AN Open Flame of ANY Kind to Test for LeaksKEY Dimensions and Components of the GAS Connections Instructions for Pressure Test Gauge Connection Supply PressureManifold PRESSURE- Combination GAS Valve is Factory SET Electrical Connections GAS Control ValveIgnition Module Terminal Designations 24VAC/R TH/WPS/W GNDLOW Voltage 24V Thermostat Connections Single Heater LOW Voltage 24V Thermostat Connections Multiple HeatersVenting Single Heater Venting Vertical Through the RoofSingle Heater Venting Horizontal Through Sidewall #10 Self-Drill Vent Pipe Screws Common Vent Diameter Indirect Venting Unvented HeatersAIR for Combustion Direct Outside AIR for CombustionLighting and Shutdown Instructions Side ViewSequence of Operation Burner Component Locations Cleaning and Maintenance Electric Shock & Explosion HazardTroubleshooting Guide 22.0Form #43343530 JJuly Replace air switch Restart Troubleshooting Yes Replacing Parts Removal of Main Burner and ElectrodesRemoval of GAS Valve and Manifold Assembly AIR Switch Pressure CheckIgnition Module Diagnostics Ignition System ChecksTo Check Flame Sensor Circuit Installation Data Replacement Parts Guide Burner BOXLabels/Manual 22c Body Components Description