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Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 1
APPLIES TO: Models UDAP and UDAS
Series Fan-Type
Unit Heaters
Installation/Operation FORM RZ-NA I-UDA
C E R T I F I E D
Index (by page)
Burner ................................................... 16, 29
Burner Orifice ............................................ 30
Burner Removal ...........................................29
California Warning Label ..............................3
Clearances .................................................... 7
Installation Codes ......................................... 2
Confined Space (UDAP) ...............................8
Dimensions ................................................ 4-5
Disconnect, Built-in (UDAS) ................16, 34
Door Switch (UDAS) ............................19, 33
Downturn Nozzle (Option) ............................4
Electrical Connections ............................... 16
Fan............................................................... 32
Fan Motor...............................................22, 32
Flame Rollout Switch ......................... 18, 34
Gas Piping and Pressures........................... 12
Gas Valve ...............................................22, 33
General .......................................................... 2
Hanging the Heater ......................................10
Hazard Intensity Levels ............................... 2
Heat Exchanger Maintenance ......................29
High Altitude............................................6, 14
Ignition System ......................................19, 31
Limit Control .........................................18, 33
Location (Heater) ...........................................9
Maintenance Schedule ............................... 28
Pressure Switch (Combustion Air) ....... 17, 33
Replacement Parts ................ See Form P-UD
Sound Data ................................................... 6
Startup ..........................................................26
Suspending Heater ....................................... 4
Technical Data ...............................................6
Thermostat (Option) .................................. 17
Throw (Heater) ..............................................9
Transformer..................................................33
Troubleshooting ................................... 34-36
Uncrating and Preparation ........................... 3
Valve Outlet Pressure ...................................14
Vent System ............................................... 34
Venter Motor ............................................... 32
Venting Model UDAP........ Use Form I-V-PV
Venting Model UDAP-CV Use Form I-V-CV
Venting Model UDAS......... Use Form I-V-SC
Warranty.........................................................3
Wiring Diagrams.................................... 23-25
Table of Contents
Page
Warnings ........................................ 1
Installation/Operation .............. 2-25
Check/Test/Startup ................. 26-28
Maintenance/Service .............. 28-36
FOR YOUR SAFETY
What to do if you smell gas:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in
your building.
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call your fire
department.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
WARNING: Improper installation, adjustment, alteration,
service, or maintenance can cause property damage, injury,
or death. Read the installation, operation, and maintenance
instructions thoroughly before installing or servicing this
equipment.
WARNING: Gas-fired appliances are not designed for use in
hazardous atmospheres containing flammable vapors or
combustible dust, in atmospheres containing chlorinated or
halogenated hydrocarbons, or in applications with airborne
silicone substances. See Hazard Levels, page 2.
WARNING: Should overheating occur, or the gas supply fail to
shut off, shut off the manual gas valve to the appliance before
shutting off the electrical supply.
WARNING: Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to inspect
the appliance and replace any gas control that has been under
water.