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WarmFlo HD320 Installation & Operating Instructions Manual
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10/04/2007 7 NI802Whether this unit is sitting on or attached to an inlet cabinet, field designed inlet cabinet, or horizontalsupports; verify proper support and mechanical strength is provided within the system installation.Rubber isolation pads should be used where possible to reduce sound and vibration transmission.WARNINGWHEN HANGING THIS UNIT, THERE MUST BE UNDER SUPPORTS WHICH DISTRIBUTE THEHANGING CHAINS ACROSS THE SURFACE OF THIS UNIT, DO NOT SIMPLY DRILL A HOLEAND USE A COUPLE OF HANGING BOLTS.For information, factory optional inlet cabinets can reduce cost and simplify installation, see NC805.When installing the unit maintain a minimum clearance of 36” in front of the unit for service accessibility.Upflow, Air ConditioningThe return air should enter the bottom of this cabinet. Suggest using Electro bottom filter cabinet(NC805) or field constructed equivalent. The A-coil will be mounted above the blower in either a casecoil or field constructed plenum.Upflow, Heat PumpIn this case the HP refrigerant coil must be at the bottom of the blower in order for WarmFlo to properlyadd temperature to the heat pump output. Electro inlet cabinet is ideal for using a heat pump A-coil(NC805). This factory available inlet cabinet provides space for standard A-coil and is installed betweenthe filter/inlet cabinet and the Electric Furnace unit itself.The cabinet is designed for 20”H A-coil, but for larger A-coils the top can be above this cabinetapproximately 3” (24”).The outlet of the blower will enter into a plenum and directly into distribution duct.Downflow, Air ConditioningSimilar to upflow above, the air conditioning coil is positioned at the blower outlet. Depending upon thecoil type and drip pan it is positioned in a field constructed plenum as required.A typical packaged 20” x 20” filter cabinet could easily be installed at the blower inlet opening.Downflow, Heat PumpWith the WarmFlo elements down and airflow direction down, the A-coil must be at the top of this unit.This is assuming the heat pump and associated refrigerant coil you are using is designed to drive air“backwards” through the A-coil and drip pan. Use heat pump manufacturer’s recommendation; however,refrigerant coil must be on the inlet side of the elements. |
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