1.1 Hazard Labels and Notices
There are warning labels on the unit and throughout this manual. For your
safety, read the denitions below and comply with all boxes labeled CAU-
TION, WARNING, and DANGER during installation, operation, mainte-
nance and service of this heater.
Denitions of Hazard Intensity Levels in this Manual
HAZARD INTENSITY LEVELS
1. DANGER: Failure to comply will result in severe personal injury
or death and/or property damage.
2. 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-red appliances are not designed for use in
hazardous atmospheres containing ammable vapors or
combustible dust, in atmospheres containing chlorinated
or halogenated hydrocarbons, or in applications with
airborne silicone substances. See Hazard Levels above.
1. General
Table of Contents
1. General........................2 - 4
1.1 Hazard Labels and Notices . . . . . . . . . . . .2
1.2 General Information . . . . . . . . . . . . . . . . . .3
1.3Warranty...........................3
2. Unit Heater Location . . . . . . . . . . . .4 - 6
1.4 Installation Codes. . . . . . . . . . . . . . . . . . . .4
3. Receiving, Uncrating, and Preparing
for Installation ..................6
4. Clearances and Dimensions . . . . . .6 - 7
4.1Clearances.........................6
4.2Dimensions ........................7
5. High Altitude Operation . . . . . . . . . . . . 8
6. Hanging the Heater ................8
7. Mechanical....................9 - 29
7.1 Gas Piping and Pressure . . . . . . . . . . . . . .9
7.2 Venting and Combustion Air . . . . . . . . . .13
7.3 Condensate Drain System . . . . . . . . . . . .28
8. Electrical and Wiring. . . . . . . . . . .30 - 31
8.1 Electrical Supply. . . . . . . . . . . . . . . . . . . .30
8.2 24V Control Wiring Connections . . . . . . .30
8.3 Typical Wiring Diagram . . . . . . . . . . . . . .31
9. Controls.....................32 - 34
9.1Thermostat........................32
9.2GasValve.........................32
9.3SafetyControls.....................32
10. Ignition System . . . . . . . . . . . . . .34 - 37
11. Operation...................37 - 39
11.1 Check the Installation Prior to Startup . .37
11.2 Heater Startup . . . . . . . . . . . . . . . . . . . .38
11.3 Check Installation After Startup . . . . . . .39
12. Maintenance and Service . . . . . .40 - 49
12.1 Maintenance Schedule. . . . . . . . . . . . . .40
12.2 Maintenance Procedures . . . . . . . . . . . .40
12.3 Troubleshooting . . . . . . . . . . . . . . . . . . .47
APPENDIX ........................50
TechnicalData........................50
Operating Principle. . . . . . . . . . . . . . . . . . . . .50
INDEX............................51
Form I-UEAS, Page 2
