18
UBXC-UDXC-IOM (01-24) 1042980-0
INSTALLATION—CONTINUED
Pre-Installation Checklist—Continued
Heater Suspension
⚠ WARNING ⚠
• Before suspending the heater, check the supporting structure to be used to verify that it has
sufficient load-carrying capacity to support the weight (refer to Weights section) of the unit.
• The heater must be level for proper operation. DO NOT place or add additional weight to a
suspended heater.
⚠ CAUTION ⚠
• Before lifting the heater, verify that any screws used for holding shipping brackets were re-
installed in the cabinet.
• Before lifting a unit that has been converted to separated-combustion, any unused suspension
points on the control side of the heater MUST be plugged.
• When the heater is lifted for suspension, support the bottom of the heater with plywood or other
appropriately placed material. If the bottom is not supported, damage could occur.
Table 7. Field-Installed Options
Option Description
CC1 Vent cap
CC21 SST vent cap
CD1 Vertical louvers to provide wider throw pattern
CD2 Downturn nozzle, 25- to 65-degree variable air deflection range
CD3 Downturn nozzle, 50- to 90-degree variable air deflection range
CD4 Downturn nozzle, 25- to 65-degree variable air deflection range with vertical louvers
CD5 Downturn nozzle, 50- to 90-degree variable air deflection range with vertical louvers
CD9 Duct flange
CD10 Inlet blower and belt guard
CD11 Polytube adapter
CD12 Inlet blower guard
CE1 Manual shutoff valve, natural gas or propane
CG1 208V–115V stepdown transformer
CG4 230V–115V or 460V–115V stepdown transformer
CG5 575V–115V stepdown transformer
CK8 Adapts 3/8-inch hangers for two-point suspension from 1-inch threaded pipe
CK10 Adapts 3/8-inch hangers for four-point suspension from 1-inch threaded pipe
CK22 Angle brackets for low ceiling mounting (does not include hanger rods)
CL1 Single-stage thermostat
CL22, CL23, CL83, CL84, CL90 Two-stage thermostat
CL31, CL32
Multiple unit control: option CL31 includes components for one control unit and one additional unit—
option CL32 includes components for each additional non-control unit
CM1 Locking cover for CL1 thermostat
CM1B Locking cover for CL22 and CL23 thermostats
CM3 Bracket assembly for mounting thermostat on unit
DJ20 High-elevation pressure switch
DL2 Propane conversion
SC1
Separated-combustion conversion kit (requires either vertical (option CC2) or horizontal (option
CC6) vent/combustion air inlet terminal kit)
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