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FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

TECHNICAL GUIDE

MODELS: GY9

GAS-FIRED
CONDENSING / HIGH EFFICIENCY
DOWNFLOW/HORIZONTAL FURNACES

91% AFUE

NATURAL GAS
60 - 120 MBH INPUT

EFFICIENCY
RATING
CERTIFIED

This product was manufactured
in a plant whose quality system
is certified/registered as being
in conformity with ISO 9001.

Heating

Air Conditioning

R

036-21560-001 Rev. A (0204)

DESCRIPTION

These Category IV, highly efficient, compact, condensing
type furnaces are designed for residential and commercial
installations in a basement, closet, alcove, recreation room or
garage where the ambient temperature is above 32°F, or
higher. They may be either side wall or thru-roof vented using
approved plastic type combustion air and vent piping. All
units are factory assembled, wired and tested to assure
dependable and economical installation and operation.

WARRANTY

Lifetime limited warranty on the heat exchanger.

10-year warranty on the heat exchanger in commercial 
applications.

5-year limited parts warranty.

FEATURES

Compact, easy to install, ideal height 40" cabinet

Blower-off delay for cooling SEER improvement.

Easy to connect power/control wiring.

Built-in, high level self diagnostics with fault code display.

Low unit amp requirement for easy replacement applica-
tion.

Integrated control module for reliable, economical opera-
tion.

May be installed as either two-pipe (sealed combustion) 
or single pipe vent (using indoor combustion air)

Top intake & vent connection allows downflow installa-
tion in narrow locations.

Electronic Hot Surface Ignition saves fuel cost with 
increased dependability and reliability.

Induced combustion system with inshot main burners for 
quiet, efficient operation.

No special vent termination kit required.

100% shut off main gas valve for extra safety.

PSC -four speed, direct drive motor with large, quiet 
blower.

24V, 40 VA control transformer and blower relay supplied 
for add-on cooling.

Hi-tech tubular aluminized steel primary heat exchanger.

Secondary (condensing) heat exchanger of 29-4C high-
grade stainless steel.

Timed on, adjustable off blower capability for maximum 
comfort.

Easy toolist access from front of unit for cleaning, main-
tenance or service.

Protection from intake, exhaust or condensate blockage.

High velocity filter provided for field installation.

Summary of Contents for GY9

Page 1: ...install ideal height 40 cabinet Blower off delay for cooling SEER improvement Easy to connect power control wiring Built in high level self diagnostics with fault code display Low unit amp requiremen...

Page 2: ...44 80 75 23 42 21 96 1200 33 98 B 17 1 2 44 4 16 1 4 41 3 15 1 8 38 4 1 3 4 4 44 80 75 23 42 21 96 1600 45 31 C 21 53 3 19 3 4 50 2 18 1 2 47 0 2 1 8 5 40 100 95 29 28 27 82 1600 45 31 C 21 53 3 19 3...

Page 3: ...18 55 16 1 1200 34 0 17 1 2 444 91 40 70 22 39 80 23 74 21 7 1200 34 0 17 1 2 444 91 35 65 19 36 80 23 74 21 7 1600 45 3 21 533 91 40 70 22 39 100 29 93 27 3 1600 45 3 21 533 91 35 65 19 36 100 29 93...

Page 4: ...Medium High 1583 45 1590 45 1569 44 1554 44 1532 43 1502 43 1457 41 1409 40 1327 38 1221 35 Medium Low 1256 36 1275 36 1275 36 1288 36 1275 36 1265 36 1232 35 1187 34 1126 32 1023 29 Low 937 27 939 27...

Page 5: ...percentage by airflow difference to obtain airflow reduction 0 8 x 90 72 5 Subract airflow reduction value to airflow 0 50 to obtain actual airflow 0 58 ESP 2125 72 2053 ACCESSORIES PROPANE LP CONVER...

Page 6: ...lude Fan Switch NOTE For One stage Cool or One stage Heat Cool must be used with Subbase 2TB17700424 2TB17700424 SUBBASE 24V One stage heat cool Manual changeover integral subbase System Switch Cool O...

Page 7: ...Unitary Products Group 7 036 21560 001 Rev A 0204 NOTES...

Page 8: ...ct to change without notice Printed in U S A 036 21560 001 Rev A 0204 Copyright by York International Corp 2004 All rights reserved Supersedes Nothing Unitary 5005 Norman Products York OK Group Drive...

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