PG80VTLA
Variable-Speed, ECM
Induced-Combustion, 2-Stage
4-Way Multipoise, Non-Condensing Gas Furnace
Series A
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 1 - Minimum Free Area Required for Each Combustion Air
opening of Duct to Outdoors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2 - Minimum Space Volumes for 100% Combustion, Ventila-
tion, and Dilution from Indoors . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 3 - Opening Dimensions - In. (mm) . . . . . . . . . . . . . . . . . 10
AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 4 - Air Delivery - CFM (With Filter)* . . . . . . . . . . . . . . . 13
GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 5 - Maximum Capacity of Pipe . . . . . . . . . . . . . . . . . . . . . 19
Table 6 - Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
J-BOX RELOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 7 - Combined Appliance Maximum Input Rating
Table 8 - Minimum Allowable Input Rating of
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Portions of the text and tables are reprinted from NFPA 54/ANSI Z223.1E, with permission of National Fire Protection Association, Quincy, MA
02269 and American Gas Association, Washington DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSI
Installation, Start-up, Operating and
Service and Maintenance Instructions
on the referenced subject, which is represented only by the standard in its entirety.
Table 9 - Altitude Derate Multiplier for U.S.A. . . . . . . . . . . . . . 32
Table 10 - Blower Off Delay Setup Switch . . . . . . . . . . . . . . . . 34
Table 11 - Gas Rate (CU ft./hr). . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 12 - Orifice Size and Manifold Pressure (In. W.C.) for Gas Input
Rate (Tabulated Data Based on 22,000 Btuh High-Heat/14,500 Btuh
for Low-Heat per Burner, Derated 4 Percent for Each 1000 Ft.(305 M)
Above Sea Level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 13 - Filter Size Information - In. (mm) . . . . . . . . . . . . . . . 40
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
CASING GROUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
ELECTRICAL GROUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
BLOWER GROUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
INDUCER GROUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Use of the AHRI Certified TM Mark indicates a
manufacturer's participation in the program. For
verification of certification for individual products,
go to www.ahridirectory.org.
NOTE: Read the entire instruction manual before starting the
installation.