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INSTALLATION <br /> Unpacking and Inspection <br /> • The unit was test-operated and inspected at the factory prior to crating and was in operating condition. <br /> • It is important to note when uncrating the unit that shipping brackets are attached with cabinet screws. When <br /> removing shipping brackets, re-insert ALL screws into the cabinet. <br /> • If, upon removing it from its crate, the unit has been found to have incurred any damage in shipment, document <br /> the damage with the transporting agency and contact an authorized Factory Distributor. If you are an authorized <br /> Distributor,follow the FOB freight policy procedures. <br /> Pre-Installation Checklist <br /> ❑ Check the rating plate for the gas specifications and electrical characteristics of the heater to ensure that they <br /> are compatible with the gas and electric supplies at the Installation site. <br /> © Read this manual and become familiar with the installation requirements of your particular heater. <br /> ❑ If you do not have knowledge of local requirements,check with the local gas company or any other local agencies <br /> who might have requirements concerning this installation. <br /> ❑ Before beginning, make preparations for necessary supplies, tools, and manpower. <br /> ❑ Field-removal of heat exchanger tube support—unit sizes 030-125 (optional): in some cases, the heat <br /> exchanger tubes may have shifted during shipment, causing vibration noise against the support during unit <br /> operation.The primary function of the heat exchanger tube support is to support the heat exchanger tubes during <br /> shipment. This support can be removed without affecting the operation of the unit. It is recommended that the <br /> support be removed prior to installing the unit as follows: <br /> a. Remove discharge air louvers,taking care not to lose springs. <br /> b. Remove and discard two screws that secure heat exchanger support located on top of unit. <br /> c. Remove heat exchanger support through discharge opening and discard support. <br /> ❑ Reinstall discharge air louvers. <br /> ❑ Check to see if there are any field-installed options (refer to Table 13) that need to be assembled/installed <br /> prior to unit installation. Ensure that all options ordered are at the installation site. Instructions are in this <br /> manual or in the option package(option packages are shipped separately). <br /> Table 13, Field-Installed Options <br /> Name Code Description <br /> Vent/combustlonalr Inlet terminal kit CC2 Vertical roof ventCC6 Horizontal through-wall vent <br /> Vertical louvers CD1 — <br /> CD2 25-to 65-degree variable alr deflection range <br /> Downturn nozzle CD3 50-to 90-degree,variable alr deflection range <br /> CD4 25-to 65-degree variable alr deflection range nozzle with vertical louvers <br /> Manual shutoff valve CEI Natural gas or propane <br /> CG1 208V/1 15V <br /> Stepdown transformer CG2 230V/115V <br /> CG4 460V/1 15V <br /> CKS Adapts 3/8-inch hangers for two- olni suspension from 1-inch threaded pipe <br /> Hanger kit CK10 Adapts 3/8-Inch hangers for four-point suspension from 1-inch threaded pipe <br /> CK22 Angle brackets for Low ceiling mounting does not include hanger rods) <br /> High-eleva#lon conversion kit DJ 20 For Installations at elevations>6000 feet <br /> 16 1-UBX-UBZ-UDX-UDZ(04.21)1034344-0 <br />