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TECHNICAL GUIDE
LATITUDE
MODELS: GY8S/LY8S
GAS-FIRED
HIGH EFFICIENCY SINGLE STAGE
UPFLOW/HORIZONTAL FURNACES
STANDARD & LoNOx
NATURAL GAS
40 - 130 MBH INPUT
EFFICIENCY
RATING
CERTIFIED
Due to continuous product improvement, specifica-
tions are subject to change without notice.
Visit us on the web at www.york.com for the most
up-to-date technical information.
Additional information can be found at
www.gamanet.org.
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
This product was manufactured
in a plant whose quality system
is certified/registered as being
in conformity with ISO 9001.
DESCRIPTION
These high efficiency, compact units employ induced com-
bustion, reliable hot surface ignition and high heat transfer
aluminized tubular heat exchangers. The units are factory
shipped for installation in upflow or horizontal applications.
These furnaces are designed for residential installation in a
basement, closet, alcove, attic, recreation room or garage
and are also ideal for commercial applications. All units are
factory assembled, wired and tested to assure safe depend-
able and economical installation and operation.
These units are Category I listed and may be common vented
with another gas appliance as allowed by the National Fuel
Gas Code.
WARRANTY
20-year limited warranty on the heat exchanger.
10-year heat exchanger warranty on commercial applica-
tions.
5-year limited parts warranty.
FEATURES
•
Easily applied in upflow, horizontal left or horizontal right
installation with no conversion necessary
•
100% shut off main gas valve for added safety
•
Rollout safety control
•
Low unit amp requirement for easy application
•
High quality inducer motor for quiet operation
•
Built-in self diagnostics with fault code display
•
"Diamond Tough"™ hot surface igniter
•
High velocity filter provided for field installation
•
Standard terminals for controlling humidifiers and EAC's
•
40 VA control transformer fuse protected
•
Easy to connect power and control wiring
•
Efficiency ratings of 80 AFUE attained by using tubular
heat exchangers
•
Cooling relay supplied for easy installation of add-on
cooling
•
Multi-speed PSC, direct-drive blower motors to match
cooling requirements
•
Adjustable fan-off settings to eliminate "cold-blow"
•
Compact 40-in height allows installation in small space
confines
•
Lo NOx models have been designed to meet specific
code requirements. Lo NOx units may not be converted
to propane.
036-21618-002 Rev. A (1004)
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Related Manuals for York GY8S
Summary of Contents for York GY8S
- Page 1 ISO 9001. Due to continuous product improvement, specifica- tions are subject to change without notice. Visit us on the web at www.york.com for the most up-to-date technical information. Additional information can be found at www.gamanet.org.
- Page 2 036-21618-002 Rev. A (1004) (VENT CONNECTIONS) POWER WIRING 7/8” HOLE 14-3/4 13-3/4 5-3/8 2-1/2 32-1/2 GAS INLET 1-1/4 x 2-1/2 ACCESS WIRING 7/8” K.O. 23-1/2 2-1/4 8-3/4 1-1/8 28-1/2 RIGHT SIDE LEFT SIDE FRONT T’STAT WIRING 7/8” K.O. VENT CONNECTION 28-1/2 (Vent Size) 3/4”...
- Page 3 036-21618-002 Rev. A (1004) RATINGS & PHYSICAL / ELECTRICAL DATA - UPFLOW MODELS Input Output Nominal Cabinet Width AFUE Air Temp. Rise °F 1200 14-1/2 80.0 25-55 1200 14-1/2 80.0 25-55 1200 14-1/2 80.0 35-65 1600 17 1/2 80.0 25-55 2200 80.0 25-55...
- Page 4 036-21618-002 Rev. A (1004) BLOWER PERFORMANCE CFM - UPFLOW (WITHOUT FILTER) - BOTTOM RETURN Single Stage Bottom Airflow Data (SCFM) MODELS Input / Speed Ext. Static Pressure (in. H2O) High 1610 1540 1460 1360 1290 1200 1110 1020 Medium High 1430 1390 1330...
- Page 5 036-21618-002 Rev. A (1004) BLOWER PERFORMANCE CFM - UPFLOW (WITHOUT FILTER) - LEFT SIDE RETURN Single Stage Left Side Airflow Data (SCFM) MODELS Input / Speed Ext. Static Pressure (in. H2O) High 1810 1730 1660 1570 1480 1390 1300 1200 1090 Medium High 1390...
- Page 6 036-21618-002 Rev. A (1004) FILTER PERFORMANCE The airflow capacity data published in the “Blower Perfor- BLK (HOT) NOMINAL mance” table listed above represents blower performance WHT (NEUTRAL) 120 VOLT WITHOUT filters. To determine the approximate blower per- formance of the system, apply the filter drop value for the fil- ter being used or select an appropriate value from the “Filter Performance”...
- Page 7 036-21618-002 Rev. A (1004) UNIT CLEARANCES TO COMBUSTIBLES (ALL SURFACES IDENTIFIED WITH THE UNIT IN A VERTICAL POSITION) LEFT FLOOR/ APPLICATION TOP FRONT REAR RIGHT SIDE FLUE CLOSET ALCOVE ATTIC LINE CONTACT SIDE BOTTOM UPFLOW COMBUSTIBLE UPFLOW B-VENT COMBUSTIBLE COMBUSTIBLE HORIZONTAL COMBUSTIBLE HORIZ.
- Page 8 NOTES Subject to change without notice. Printed in U.S.A. 036-21618-002 Rev. A (1004) Copyright © by Unitary Products Group 2004. All rights reserved. Supersedes: 036-21618-001 Rev. A (0804) Unitary 5005 Norman Products York Group Drive 73069...
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