Reznor CAUA Unit Installation Manual - Manual (Page 2)

Form I-CAUA, P/N 164771 R8, Page 2
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.
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 which has been under water.
1.0 General 1.1 Application
The instructions in this manual apply to a Model CAUA heater.
1.3 General
Installation
Model CAUA heaters are design-certified by the Canadian Standards Association
(CSA) to ANSI Z83.8 and CSA 2.6 for industrial/commercial installations in the United
States and Canada. Heaters are available for use with either natural gas or propane.
The type of fuel, the firing rate, and the electrical characteristics are on the unit rating
plate.
1.0 General ................................................................ 2
1.1 Application .......................................................2
1.2 Hazard Labels and Notices..............................2
1.3 General Installation ..........................................2
1.4 Warranty ..........................................................3
1.5 Installation Codes ............................................3
2.0 Heater ....................................................................
Location ............................................................... 3
3.0 Receiving, Uncrating, and Preparing for
Installation ............................................................ 4
4.0 Dimensions and Clearances ............................. 5
4.1 Dimensions ......................................................5
4.2 Clearances.......................................................6
5.0 Positioning and Mounting .................................. 6
6.0 Mechanical .......................................................... 6
6.1 Gas Piping and Pressures ...............................6
6.2 Venting and Combustion Air ............................8
6.3 Inlet Air ...........................................................24
6.4 Discharge Air .................................................27
6.5 Blower, Motor, and Drive................................29
6.6 Cased Cooling Coil, Model ACUA, ACUB,
or ACUC or Option C....................................31
6.7 Burner Condensate Drain ..............................33
6.8 Flue Wrapper Condensate Drain ...................34
7.0 Electrical and Wiring ........................................ 34
7.1 Wiring.............................................................34
7.2 Thermostat and Connections ........................35
7.3 Typical Wiring Diagrams ................................36
7.4 Control Locations and Controls .....................38
8.0 Ignition System ................................................. 39
9.0 Check Installation and Startup ........................ 40
9.1 Check the installation prior to startup: ...........40
9.2 Startup ..........................................................40
9.3 Check Installation after Startup .....................42
INDEX ....................................................................... 43
REFERENCES ......................................................... 43
INSTALLATION RECORD - to be completed by the
installer: .............................................................. 44
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.
1.2 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
TABLE OF CONTENTS