NOTE:
Read the entire instruction manual before starting the installation.
Index
Page
SAFETY CONSIDERATIONS.....................................................................................................................................................................................2
Clearances From Combustible Materials.................................................................................................................................................................2
INTRODUCTION ......................................................................................................................................................................................................2-3
Dimensional Drawing...............................................................................................................................................................................................3
LOCATION ................................................................................................................................................................................................................3-4
General ..................................................................................................................................................................................................................3-4
Location Relative to Cooling Equipment.............................................................................................................................................................3-4
Hazardous Locations ................................................................................................................................................................................................4
AIR FOR COMBUSTION AND VENTILATION ..................................................................................................................................................4-6
Unconfined Space.....................................................................................................................................................................................................4
Confined Space .....................................................................................................................................................................................................4-6
SUPPLY-AIR PLENUM INSTALLATION (DOWNFLOW).....................................................................................................................................6
Installation On a Concrete Slab ...............................................................................................................................................................................6
Installation On a Combustible Floor .......................................................................................................................................................................6
HORIZONTAL ATTIC INSTALLATION ..................................................................................................................................................................7
Construct a Working Platform.................................................................................................................................................................................7
Install Furnace ..........................................................................................................................................................................................................7
HORIZONTAL CRAWLSPACE INSTALLATION ................................................................................................................................................7-8
FILTER ARRANGEMENT.......................................................................................................................................................................................8-9
GAS PIPING ............................................................................................................................................................................................................9-10
ELECTRICAL CONNECTIONS ..........................................................................................................................................................................11-12
115-v Wiring ..........................................................................................................................................................................................................11
24-v Wiring ............................................................................................................................................................................................................11
Accessories ........................................................................................................................................................................................................11-12
VENTING ....................................................................................................................................................................................................................13
START-UP, ADJUSTMENT, AND SAFETY CHECK ......................................................................................................................................13-20
General....................................................................................................................................................................................................................13
Sequence Of Operation .....................................................................................................................................................................................13-15
Heating Mode .........................................................................................................................................................................................................13
Cooling Mode.........................................................................................................................................................................................................13
Continuous Blower Mode.................................................................................................................................................................................13-15
Heat Pump Mode....................................................................................................................................................................................................15
Start-up Procedures ................................................................................................................................................................................................15
Adjustments.......................................................................................................................................................................................................15-19
Check Safety Controls ......................................................................................................................................................................................19-20
Checklist .................................................................................................................................................................................................................20
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CANADIAN GAS ASSOCIATION
A PP R O VED
R
Installation, Start-Up, and Operating Instructions
GB3AAV
Downflow/Horizontal Gas Fired
Induced-Combustion Furnaces
Sizes 050 thru 135 Series C
Form:
IM-GB3A-04
Cancels:
IM-GB3A-03
Printed in U.S.A.
4-94
Catalog No.
92-33GB-3A5
