Reznor SC Duct Furnace Unit Installation Manual - Manual (Page 2)

Form I-SC, P/N 207696 R11, Page 2
Definitions of HAZARD INTENSITY LEVELS used in this Manual
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-fired appliances are not designed for use in hazardous atmo-
spheres containing flammable vapors or combustible dust, in atmo-
spheres containing chlorinated or halogenated hydrocarbons, or in
applications with airborne silicone substances. See Hazard Levels,
above.
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
To ensure safety, follow lighting instructions located on the outlet box
cover. See Hazard Levels, above.
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.
1.0 General
1.0 General ..............................................................2
1.1 Hazard Labels and Notices............................. 2
1.2 General Installation Information .................... 3
1.3 Warranty ........................................................... 3
1.4 Installation Codes ........................................... 3
2.0 Furnace Location .............................................4
3.0 Uncrating and Preparation ..............................4
3.1 Uncrating and Inspecting ............................... 4
3.2 Preparing for Installation ................................ 4
4.0 Clearances and Dimensions ...........................5
4.1 Clearances ....................................................... 5
4.2 Dimensions ...................................................... 6
5.0 Suspension and Mounting ..............................6
6.0 Mechanical ........................................................7
6.1 Optional Condensation Drain ........................ 7
6.2 Gas Piping and Pressures .............................. 8
6.3 Venting and Combustion Air .......................... 9
6.4 Duct Furnace Airflow .................................... 20
7.0 Electrical Supply and Connections ..............24
7.1 General .......................................................... 24
7.2 Supply Voltage and Wiring ........................... 24
7.3 Typical Wiring Diagrams .............................. 25
7.4 Thermostat and Control Wiring ................... 27
8.0 Controls ..........................................................27
8.1 Combustion Air Proving Switch ................. 27
8.2 Fan Control .................................................... 27
8.3 Limit Control ................................................. 27
8.4 Gas Controls .................................................. 28
8.5 Pilot Ignition Systems ................................... 31
8.6 Burners, Orifices, and Carryover System ... 32
9.0 Commissioning and Start-Up ........................33
9.1 Check the installation prior to start-up ....... 33
9.2 Start-Up ......................................................... 33
9.3 Check installation after start-up: ................. 34
10.0 Maintenance and Service ............................34
10.1 Maintenance Schedule................................ 34
10.2 Maintenance Procedures ............................ 35
10.3 Troubleshooting .......................................... 37
INDEX ....................................................................39
INSTALLATION RECORD .....................................40
Table of Contents