Form 43471000
-48- May 2021
Plastic Vacuum Air Tube, 15” long
Air Inlet Plate (Perforated)
Kit, Air Switch, set @ 0.11” W.C., #NS2-0307-00
Relay, 24V SPST-NO (2-stage controls)
Terminal Block, EL-3008 (2-stage controls)
Thermostat Connection Block – 3 Pole (2-stage controls)
Electrode PSE-GF1 (Igniter/Sensor)
Kit, Spark Module – Fenwal #35-608711-034
Monitoring Light, Amber (2 each for 2-stage controls)
Restrainer Nipple, 5” long
Kit, Gas Valve – WR #36J23-203B1 Single Stage (natural gas)
Kit, Gas Valve – WR #36J23-204B1 Single Stage (propane gas)
Kit, Gas Valve – WR #36J58-201B1 Two Stage (natural gas)
Kit, Gas Valve – WR #36J58-202B1 Two Stage (propane gas)
Orifice Fitting – ½” NPT x 7/16-27
Orifice for CB20-50 (State Model & Gas Type for Size)
Burner Bracket Sub-Assembly
Label, Wire Diagram – Ladder (1-stage controls)
Label, Wire Diagram – Ladder (2-stage controls)
Label, Wire Diagram – Connections (1-stage controls)
Label, Wire Diagram – Connections (2-stage controls)
Installation and Operation Instructions (not shown)
Label, Gas Connector Warning
Label, Clearance to Combustibles
Label, Nameplate (1-stage controls)
Label, Nameplate (2-stage controls)
Label, Warning (residential)
Label, Operating Instructions
Label, Horizontal Venting
Label, 24V Thermostat Connection – (2-stage controls)
Label, Low/High Fire (2-stage controls)