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Mammoth HydroBank MS Installation, Operation And Maintenance Manual
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10 HydroBank MS Installation and Operation Manual MAMM-WSHP-IOM-1MSA (October 2014)Vertical Unit InstallationVertical Unit InstallationLocationVertical units are typically installed in a small mechanicalroom or closet, with discharge ductwork routed overheadinto the conditioned space. See Figure 8. Return air maybe ducted or non-ducted. If non-ducted, provision must bemade for return air to freely enter the mechanical room.This is often accomplished by using a louvered door at theentrance. A sound baffle may be needed on the door toattentuate noise from the unit.IMPORTANT: This equipment is designed for indoorinstallation only. Sheltered locations such as attics,garages, etc., generally will not provide sufficientprotection against extremes in temperature and/orhumidity, and equipment performance, reliability,and service life may be adversely affected.Install the unit on a rubber or neoprene mounting padfor sound isolation. The pad should be at least 3/8 inchthick.Suggested Service ClearancesFigure 7 shows minimum suggested clearances. Anyadditional clearances would be beneficial, but notalways necessary. Units need to be accessed fromthe front to change the filter and to access the electri-cal panel, blower motor, air coil and compressor com-partment. The requirements on any specific unit mayincrease or be reduced depending on several factorssuch as maintenance requirements and mechanical orelectrical installation codes.Figure 7: Suggested Vertical Unit Clearances2 ft (61 cm)service access1 ft (31 cm)non-ductedunits foreven airdistributionacross coilfilter removal(width of filter)PipingHeat pumps are typically connected to supply and returnpiping in a two-pipe, reverse-return configuration, which isinherently self-balancing. It also requires only trim-balanc-ing where multiple heat pumps with different flow and pres-sure drop characteristics exist in the same loop.Supply and return run-outs usually join the heat pump viashort lengths of high-pressure, flexible hose which serveas sound attenuators for both heat pump operating noiseand hydraulic pumping noise. One end of the hose shouldhave a swivel fitting to facilitate removal for service. Makesure that threaded fittings are sealed. Teflon tape can beused to provide a tight seal.For geothermal applications, all water lines and valvesshould be insulated to prevent condensation.Figure 8: Typical Vertical Unit MountingUnit power disconnect(by others)Flexible, high-pressurehoses with swivel fittings(by others)Condensate drain pipe withvent by others (verticalvent by others (verticalunits are internally trapped)Isolation pad (by others)Flexible duct connectors(by others)Ducted return (where used)Filter removalLow voltage thermostator controls wiringLine voltage power wiringLine voltage power wiring |
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