York GY9 Technical Manual
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York GY9 Technical Manual

Gas-fired condensing / high efficiency downflow/horizontal furnaces 91% afue natural gas 60 - 120 mbh input
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See also: Service Manual , User's Information, Maintenance and Service Manual
TECHNICAL GUIDE
MODELS: GY9
GAS-FIRED
CONDENSING / HIGH EFFICIENCY
DOWNFLOW/HORIZONTAL FURNACES
91% AFUE
NATURAL GAS
60 - 120 MBH INPUT
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
DESCRIPTION
R
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
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EFFICIENCY
RATING
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CERTIFIED
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This product was manufactured
in a plant whose quality system
is certified/registered as being
in conformity with ISO 9001.
036-21560-001 Rev. A (0204)
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.

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Summary of Contents for York GY9

  • Page 1 TECHNICAL GUIDE MODELS: GY9 GAS-FIRED CONDENSING / HIGH EFFICIENCY DOWNFLOW/HORIZONTAL FURNACES 91% AFUE NATURAL GAS 60 - 120 MBH INPUT FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE DESCRIPTION These Category IV, highly efficient, compact, condensing...

  • Page 2: Combustion Air Supply And Vent Piping

    036-21560-001 Rev. A (0204) 28-1/2 26-1/2 21-5/8 T’STAT WIRING 7/8” K.O. HORIZONTAL CONDENSATE DRAIN 2” K.O. 7/8” JUNCTION BOX HOLE 1-1/2” GAS PIPE ENTRY CONDENSATE DRAIN 7/8” K.O. 7-1/2 24-5/8 1-1/4 BOTTOM IMAGE RETURN END BTUH (kW) Input/Output 60/55 (17.57/16.10) 1200 (33.98) 80/75 (23.42/21.96) 1200 (33.98)

  • Page 3: High Altitude Pressure Switch Application

    HIGH ALTITUDE PRESSURE SWITCH APPLICATION Input (MBH) Upflow Models 60/1200 80/1200 80/1600 100/1600 100/2000 120/2000 NOTE: For high altitude conversion, an orifice change may also be required. See Form 035-14460-001 for application information. ELECTRICAL AND PERFORMANCE DATA Input Output 16.1 21.7 21.7 27.3...

  • Page 4: Blower Performance Cfm

    036-21560-001 Rev. A (0204) BLOWER PERFORMANCE CFM MODELS 0.1 (0.025) 0.2 (0.050) Input/ Speed Output/ Airflow/ CFM m /min CFM m cabinet High 1687 1652 Medium High 1193 1183 60/55/ 1200/B Medium Low 933 High 1686 1658 Medium High 1257 1223 80/75/ 1200/B...

  • Page 5: Applying Filter Pressure Drop To Determine System Airflow

    APPLYING FILTER PRESSURE DROP TO DETERMINE SYSTEM AIRFLOW To determine the approximate airflow of the unit with a filter in place, follow the steps below: Select the filter type. Determine the External System Static Pressure (ESP) without the filter. Select a filter pressure drop from the table based upon the number of return air openings or return air opening size and add to the ESP from Step 3 to determine the total system static.
  • Page 6 036-21560-001 Rev. A (0204) MODEL NO. 2ET03700324 2TH13700424 2TB17700424 2ET03701024 2ET03700024 FIELD INSTALLED ACCESSORIES - ELECTRICAL DESCRIPTION THERMOSTAT- Electronic Non-Programmable. One-stage Heat/Cool. Manual Changeover, Integral Subbase. System Switch: Cool-Off-Heat. Fan Switch: Auto-On. THERMOSTAT- One-stage Heat. Deluxe 24V with Heat only Sub- base, does not include Fan Switch.
  • Page 7 036-21560-001 Rev. A (0204) NOTES Unitary Products Group...
  • Page 8 Subject to change without notice. Printed in U.S.A. Copyright © by York International Corp. 2004. All rights reserved. Unitary Products Group 5005 York Drive 036-21560-001 Rev. A (0204) Supersedes: Nothing Norman 73069...

This manual is also suitable for:

Gy9s060b12dh11Gy9s080b12dh11Gy9s080c16dh11Gy9s100c16dh11Gy9s100c20dh11Gy9s120d20dh11

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