2
TABLE OF CONTENTS
DESCRIPTION .............................................................2
GENERAL SAFETY INFORMATION ............................3
Installation Codes .......................................................3
Special Precautions ....................................................3
SPECIFICATIONS ........................................................4
Performance & Dimensional Data ...........................4-5
INSTALLATION ............................................................6
Locating Units .............................................................6
Air for Combustion ......................................................6
Clearances .................................................................6
Suspension of Units.................................................7-8
INSTALLATION - GAS PIPING ....................................9
Pipe Sizing..................................................................9
Pipe Installation ........................................................10
INSTALLATION - CONDENSATE PIPING .................10
ELECTRICAL CONNECTIONS .................................. 11
Thermostat Wiring and Location ............................... 11
Unit Wiring Diagrams...........................................12-14
VENTING - GENERAL GUIDELINES ........................15
Vent Termination Clearances ....................................15
STANDARD COMBUSTION – HORIZONTALLY
VENTED (CAT. IV) ......................................................16
STANDARD COMBUSTION –
VERTICALLY VENTED (CAT. IV) ...............................17
SEPARATED COMBUSTION –
TWO PIPE VENTING ............................................18-19
SEPARATED COMBUSTION –
CONCENTRIC VENTING ...........................................20
Horizontal Sidewall Mounting ..............................20-22
Vertical Roof Mounting .............................................22
GAS CONVERSION ..............................................23-25
OPERATION ..............................................................26
Explanation of Controls .......................................26-30
Start-Up ....................................................................30
Shut Down ................................................................30
GAS INPUT RATE .....................................................31
High Altitude Deration ...............................................31
MODBUS CONFIGURATION .....................................31
PNEUMATIC TUBING SCHEMATIC ..........................32
UNIT TROUBLESHOOTING GUIDE .....................33-34
LED TROUBLESHOOTING GUIDE ...........................35
MAINTENANCE .........................................................36
WARRANTY ...............................................................37
IDENTIFICATION OF PARTS ................................38-39
Replacement Parts ...................................................39
APPENDIX A – MODBUS REGISTERS ................40-41
UNIT NUMBER DESCRIPTION .................................42
START-UP AND INSPECTION SHEET ......................43
NOTICE: It is the equipment owner’s responsibility to provide any scaffolding or other apparatus required
to perform emergency service or annual/periodic maintenance to this equipment.
DESCRIPTION
The High Efficiency Gas-Fired Unit Heaters are factory
assembled, power vented, low static pressure type
propeller fan unit heaters designed to be suspended within
the space to be heated. THESE HEATERS ARE NOT
TO BE CONNECTED TO DUCTWORK. The designs are
certified by ETL as providing a minimum of 96% thermal
efficiency, and approved for use in California. Do not alter
these units in any way. If you have any questions after
reading this manual, contact the manufacturer.
The following terms are used throughout this manual,
in addition to the ETL requirements to bring attention
to the presence of potential hazards, or to important
information concerning the product:
Indicates an imminently hazardous
situation which, if not avoided, will result in death,
serious injury, or substantial property damage.
Indicates an imminently hazard-ous
situation which, if not avoided, could result in death,
serious injury, or substantial property damage.
Indicates an imminently hazardous
situation which, if not avoided, may result in minor
injury or property damage.
NOTICE: Used to notify of special instructions on
installation, operation, or maintenance which are
important to equipment but not related to personal injury.
Figure 1 - High Efficiency Gas-Fired Propeller Unit Heater
See IDENTIFICATION OF PARTS, Figures 25 through 29
