Form I-UDA, P/N 195673 Rev 13, Page
HAZARD INTENSITY LEVELS
1. DANGER: Failure to comply will result in severe personal injury or death
and/or property damage.
. WARNING: Failure to comply could result in severe personal injury or
death and/or property damage.
3. CAUTION: Failure to comply could result in minor personal injury and/or
property damage.
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, above.
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.
1. General
1.1 Hazard Labels and Notices
There are warning labels on the unit and throughout this manual. For your safety, read
the definitions below and comply with all boxes labeled CAUTION, WARNING, and
DANGER during installation, operation, maintenance, and service of this heater.
Definitions of Hazard Intensity Levels in this Manual
Contents
1. General ....................................................... -4
1.1 Hazard Labels and Notices ............................
1. General Installation Information .................... 3
1.3 Warranty .......................................................... 4
1.4 Installation Codes ........................................... 4
. Unit Heater Location .................................. 4-6
.1 Heater Throw .................................................. 4
. Location Recommendations .......................... 5
3. Uncrating and Preparation ........................ 6-7
3.1 Uncrating and Inspecting ............................... 6
3. Preparing for Installation ............................... 6
4. Clearances and Dimensions .................... 7-9
4.1 Clearances ....................................................... 7
4. Dimensions ..................................................... 8
5. Hanging the Heater ................................ 10-11
5.1 Weights .......................................................... 10
5. Lifting and Suspending ................................ 10
6. Mechanical ............................................. 11-16
6.1 Gas Piping and Pressures ............................11
6. Combustion Air - UDAP and UDAP-CV ....... 16
7. Electrical Supply and Wiring ................ 16-
7.1 General .......................................................... 16
7. Supply Wiring ................................................ 17
7.3 4V Control Wiring Connections ................. 17
7.4 Wiring Diagrams ........................................... 18
7.5 Electrical Operating Components ............... 1
8. Controls and Operation ......................... -6
8.1 Thermostat ....................................................
8. DDC Controls, Options D10 and D14 .......... 3
8.3 Ignition System ............................................. 4
9. Commissioning and Startup ................. 7-9
9.1 Check the installation prior to startup: ....... 7
9. Heater Startup: .............................................. 7
9.3 Check installation after startup: .................. 8
10. Maintenance and Service .................... 9-37
10.1 Maintenance Schedule ............................... 9
10. Maintenance Procedures ........................... 30
10.3. Troubleshooting ........................................ 35
APPENDIX ....................................................... 38
INDEX ............................................................... 39
