Engineered air DJ Series User Manual

AINSTALLATION, OPERATIONAND MAINTENANCE MANUALFORPACK SERIESUNIT MODEL NO. ______________________________UNIT SERIAL NO. _____________________________

- 9 -13. Check the amperage draw of each motor. Refer to name plate for full load amps.14. Re-check voltage at unit disconnect switch with unit runni

- 10 -OPERATING SEQUENCE FOR INTERMITTENT PILOT SYSTEM WITH OR WITHOUT 100%LOCKOUT DEVICE - STANDARD OUTDOOR (OPTIONAL INDOOR)1. Set thermostat at low

- 11 -OPERATING FUNCTIONS:The three major heating and/or cooling functions of DJ (E,P) units are as follows:Furnace Operation: Defined as space heatin

- 12 -6. MODULATING DAMPER MOTOR: Modulates the outside air and return air dampers to maintain a constant mixedair temperature or to provide multiple

- 13 -28. POWER VENTER RELAY: Provides a signal to start the power venter on a heat call.29. VENTOR FLOW SWITCH: Interrupts combustion if the power ve

- 14 -MAINTENANCEIn order to provide a maintenance history, we recommend that the owner have a maintenance fileon each unit. The following maintenanc

- 15 -3. Set Screws:Check set screws on blower wheel, blower bearings, blower and motor pulleys for looseness on theshaft. Tighten where required. IT

- 16 -5. Motor Lubrication:Refer to motor manufacturer for lubrication recommendations.Follow the highlighted blower bearing recommendations above for

- 17 -8. FurnaceA. Furnace Inspections and Cleaning:Furnaces should be inspected once every four months during the heating season where theequipment i

- 18 -TROUBLE SHOOTING GUIDEPROBLEM POSSIBLE CAUSE CORRECTIONPilot lit, but furnace willnot fire (match litsystem).1) Thermostat set too low.2) Power

- 1 -INSTALLATION, OPERATIONAND MAINTENANCE MANUALINDEXPAGEINTRODUCTION...

- 19 -TROUBLE SHOOTING GUIDE (cont d)PROBLEM POSSIBLE CAUSE CORRECTIONMotor stops duringfurnace operation.1) Excessive current draw.2) Excessive air F

- 2 -INTRODUCTIONThe Engineered Air PACK units are high quality products designed and manufactured to providemany years of trouble-free service. We r

- 3 -RECEIVING THE UNIT:Engineered Air units are usually pre-wired and assembled where possible. On receipt of unit, checkelectrical characteristics

- 4 -LIFTING UNIT:All Engineered Air units are constructed on a heavy base frame. The frame is extended beyond thelength of the unit and is predrille

- 5 -ASSEMBLING THE UNIT:If the unit is split and shipped in sections, the sections must be field assembled into one piece. Allsections are pre-drill

- 6 -An extension is included with the gravity vent cap with all PACK series 300, 350 and 400units. Dimension H is 12 inches (305mm) for propane gas

- 7 -B) PROPANE GAS (See Name Plate)Manifold pressure is regulated by the combination valve to 10" W.C. (2.49 kPa). Linepressure upstream of the

- 8 -ELECTRICAL INSTALLATION:All wiring shall be installed with the requirements of the authorities having jurisdiction. DO NOT CUTHOLES IN THE BOTTO