Carrier 50HG014 Installation Instructions Manual

Also see for COMFORTLINK 50HG014: Controls operation and troubleshooting Installation instructions Installation instructions

Contents

installation instructions

Carrier 50HG014 Installation Instructions Manual Manual pdf 1 page image

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 535-00024 Printed in U.S.A. Form 50HG-2SI Pg 1 9-01 Replaces: NewBook 1 4Tab 1b 6bInstallation InstructionsPart Numbers: CRHEATER144A00 through CRHEATER155A00SAFETY CONSIDERATIONSRead these instructions entirely before installing the acces-sory electric heaters on the base rooftop unit. See Table 1 foraccessory heater data.Installation and servicing of air-conditioning equipment canbe hazardous due to system pressure and electrical compo-nents. Only trained and qualified service personnel shouldinstall, repair, or service air-conditioning equipment.Untrained personnel can perform the basic maintenancefunctions of replacing filters. All other operations should beperformed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature,tags and labels attached to the unit, and other safety precautionsthat may apply.Follow all safety codes. Wear safety glasses and workgloves. Use quenching cloth for unbrazing operations. Havefire extinguishers available for all brazing operations.GENERALThis installation instruction covers accessory heatersCRHEATER144A00 through CRHEATER155A00. Each kitcontains the heater module, block-off plate, 1 or 2 conduit assem-blies, wire ties, and the wiring label. The CRHEATER153A00accessory kit contains a terminal block in addition to these parts.See Table 1 for unit electrical data and kit usage.NOTE: All units with electric heat require a field-supplied90-degree elbow. The elbow must be installed in the supplyductwork below the unit discharge connection.NOTE: CRHEATER153A00 (75 kW, 240 volt) requires adual-point power supply.Table 1 — Electrical Data and Electric Heater Package Usage*kW rated at 240, 480, and 600 volts.Before beginning any modification, make sure all power isdisconnected to the unit and locked out. Failure to discon-nect power supply prior to servicing may result in seriousinjury. All wiring must comply with applicable nationaland local codes.Field modification of electric heat staging may result in theoverriding of electric heat safety switches and is prohibited.Damage to equipment and personal injury may result.When removing panels from the unit, be careful not todamage the roof or other surfaces with the panels.ACCESSORY HEATERPART NUMBER UNIT 50HG HEATER/BASE UNIT VOLTAGE HEATER kW* STAGESCRHEATER144A00 014 208/230-3-60 16 1CRHEATER145A00 014 460-3-60 15 1CRHEATER146A00 014 575-3-60 16 1CRHEATER147A00 014, 016, 020, 024, 028 208/230-3-60 25 2CRHEATER148A00 014, 016, 020, 024, 028 460-3-60 25 2CRHEATER149A00 014, 016, 020, 024, 028 575-3-60 25 2CRHEATER150A00 014, 016, 020, 024, 028 208/230-3-60 50 2CRHEATER151A00 014, 016, 020, 024, 028 460-3-60 50 2CRHEATER152A00 014, 016, 020, 024, 028 575-3-60 48 2CRHEATER153A00 016, 020, 024, 028 208/230-3-60 75 2CRHEATER154A00 016, 020, 024, 028 460-3-60 75 2CRHEATER155A00 016, 020, 024, 028 575-3-60 78 250HG014-028Single-Package Rooftop UnitsAccessory Electric Heat