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b12. _____ Inspect + and - pressure sensing ports at the burner (see j4 for photos of ports). Port upstream before the burner is + and needs to be pointed into air stream away from burner Port downstream after the burner is – and needs to be pointed towards the AMU fan b13. _____ Inspect pilot gas plumbing into burner, igniter connector/wire, and flame rod connector/wire (see j5 for photos of the igniter, flame rod, and pilot tubing). b14. _____ Ensure the compressed air solenoid has been wired to the control panel, and that the air supply to the application equipment is plumbed through the solenoid. The solenoid is required by NFPA 33 and is designed to shut off the air supply to the application equipment if the fans are not running, if the unit is in cure mode, or if the fire suppression equipment is faulted. The solenoid should not interfere with “breathable air”. b15. _____ Locate the red & green tubes in the AMU control panel and remove the rubber caps. Connect the manometer (Dwyer 477AV-0) to the pressure tubes. Red tube connects to minus side of gauge, green tube connects to plus side of gauge. Gauge should be reading zero with fans off. b16. _____ Inspect the communication wiring in the remote panel landed on the GA-1 device. This wiring is field connected between GA-1 and the Carel PLC in the AMU control panel. If the wiring is not connected correctly, the display and/or Carel PLC can be permanently damaged. Damaged displays or Carel PLCs are not covered under warranty. b16a. Wire color on GA-1 terminal 1 __________________
b16b. Wire color on GA-1 terminal 2 __________________
b16c. Wire color on GA-1 terminal 3 __________________
b16d. Wire color on GA-1 terminal 4 __________________
b16e. Wire color on Carel PLC terminal J3 +Vterm __________________ (should match b16a.)
b16f. Wire color on Carel PLC terminal J3 + __________________ (should match b16c.)
b16g. Wire color on Carel PLC terminal J3 - __________________ (should match b16d.)
b16h. Wire color on Carel PLC terminal J3 GND __________________ (should match b16b.) note: if 4 different colors are not available, it is recommended that the wires be traced using the continuity setting of a voltmeter (one wire at a time to ground).
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