Form I-ADF, Page 2
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-red appliances are not designed for
use in hazardous atmospheres containing ammable
vapors or combustible dust, or atmospheres containing
chlorinated or halogenated hydrocarbons. See Hazard
Levels above.
1.0 General
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 CAUTION, WARNING, and
DANGER during installation, operation, maintenance and service of this heater.
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.
Hazard Intensity
Levels Apply to
Warnings throughout
this Manual
1.0 General ......................................................... 2
1.1 Hazard Labels and Notices .............................2
1.2 General Description ........................................3
1.3 Warranty ...........................................................3
1.4 Installation Codes ............................................3
2.0 Location ....................................................... 3
3.0 Uncrating and Preparation ......................... 4
3.1 Uncrating and Inspecting ................................4
3.2 Preparing for Installation ................................4
4.0. Clearances and Dimensions .................... 4
4.1 Clearances to Combustibles ..........................4
4.2 Dimensions ......................................................4
5. Mounting ....................................................... 7
5.1 Weights .............................................................7
5.2 Rigging .............................................................7
5.3 Mounting on Field-Supplied Supports ..........7
5.4 Mounting on a Roof Curb ................................8
6.0 Mechanical ................................................... 9
6.1 Gas Piping and Pressures ..............................9
6.2 Unit Inlet Air ...................................................11
6.3 Supply Air Discharge ....................................18
6.4 Blowers, Drives, and Blower Motors ...........19
7.0 Electrical and Wiring................................. 19
7.1 General ...........................................................19
7.2 Supply Wiring .................................................19
7.3 Control Wiring ...............................................20
8.0 Controls ..................................................... 21
9.0 Commissioning and Startup .................... 22
9.1 Checks Before Startup .................................22
9.2 Startup ............................................................24
9.3 Startup for Continuous Operation ...............26
Index ................................................................. 27
Additional References .................................... 27
INSTALLATION RECORD ................................ 28
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