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Unico M Series Installation Manual
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Bulletin 30-20 — Page 2© Copyright 2010, Unico, Inc.Each module is available in three sizes: 2430, 3642, and4860. Models with a 3660 model number denote that theparticular unit piece may be used with the 3642 or 4860model.There are three basic modules: a blower module, a cool-ing module, and a heating module. The blower moduleincludes the blower wheel, blower housing, motor, andelectrical control box. The cooling module includes acooling-only refrigerant coil, a heat pump coil, or achilled water coil. The heating module is supplied as anempty cabinet with room for a slide-in hot water coil.The modules can be arranged to provide only the optionsneeded as shown in Figure 1 (with details on pages 26and 27). Heating-only systems require the blowermodule, the heating module, and a hot water coil. Cool-ing-only systems include the blower module and a cool-ing module. For heating and cooling all the modules arecombined with coils. The system may even be used forventilation-only, using just the blower module.Unico designed and built blowers feature direct drivemotors or EC motors and are located in the air stream.Each blower wheel is balanced to Unico specifications.The blowers feature a quick twist-and-lock motor mountfor easy maintenance (see page 16). The motorizedblower assembly consists of the motor, which ismounted to the inlet ring, and the wheel, which ismounted to the motor shaft.OPTIONSOther options and modules are also available to add ad-ditional features or to simplify installation. These in-clude an electric duct heater, multiple return plenum, anda vertical plenum stand. Please refer to the latest UnicoCatalog for information on these and other options.UNPACKINGAll modules are inspected prior to shipping and are care-fully packaged in individual cartons. Inspect all cartonsprior to unpacking. Notify carrier of any damage.Open each carton to remove the modules. Inspect unitfor visible signs of concealed damage and notify carrierof any such damage.All materials are sold FOB Factory and it is the respon-sibility of the consignee to file any claims with the deli-vering carrier for materials received in damaged condi-tion.LOCATIONLocate the air handler to minimize the number of plenumelbows and fittings while keeping the supply duct runs asshort as possible. (See Bulletin 40-30, Component DuctLayout Design). Provide minimum clearance on bothsides for servicing the unit as shown in Fig. 2.Heating and CoolingHorizontalFlowVerticalCounter-FlowVerticalUp-FlowIL00010d.CVNHeating Only Cooling OnlyNormal Air Inlet/Outlet Optional Air InletBlower Module`Spacer ModuleCooling ModuleVertical PlenumModule (with HotWater Coil)Vertical PlenumModule (without HotWater Coil)Spacer ModuleHeating Module(with Hot Water Coil)Heating and Cooling (M4860)Figure 1. Basic Module Arrangement (refer to detail figures shown on Pages 26 and 27) |
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