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Table of contents for the manual
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Page 1
TECHNICAL GUIDE MODELS: GY8S*UH / L Y8S*UH GAS-FIRED HIGH EFFICIENCY SINGLE ST AGE UPFLOW/HORIZONT AL FURNACES ST ANDARD & Lo w NOx NA TURAL GAS 40 - 130 MBH INPUT Due to continuous prod uct improvement, specific a- tions are subj ec t to ch a nge with out notice. Visit us on the web at www . york.com for the most up-to-date technical informati[...]
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Page 2
278436-YTG-A-0407 2 Unitary Products Group FRONT LEFT SIDE RIGHT SIDE B 20 40 A 28-1/2 3/4 14-3/4 5-3/8 (VENT CONNECTIONS) POWER WIRING 7/8” HOLE 2-1/2 ACCESS WIRING 7/8” K.O. 16 8-3/4 T’ST AT WIRING 7/8” K.O. 1-1/8 2-1/4 14 23-1/2 32-1/2 2 13-3/4 GAS INLET 1-1/4 x 2-1/2 26-1/2 1-1/2 1-1/4 C 20 5/8 5/8 B 24-3/4 BOTTOM IMAGE RETURN END TOP I[...]
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Page 3
278436-YTG-A-0407 Unitary Products Group 3 Nominal external static pressure is 0.50” w . c. at furnace outlet ahead of cooling co ils. Annual Fuel Utilizat ion Efficiency ( AFUE) numbers are determined in accordance with DOE T est procedures. Wire size and over current protection must comply wi th t he Na tional Electri cal Code (NFP A-70-latest [...]
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Page 4
278436-YTG-A-0407 4 Unitary Products Group NOTES: 1. Airflow expressed in st andard cubic feet per minute (CFM). 2. Motor voltage at 1 15 V . BLOWER PERFORMANCE CFM - UPFLOW (WITHOUT FILTER) - B OTTOM RETURN Models Speed Bottom A irflow Dat a (SCFM) Ext. Static Pressure (in. H2O) 0 . 10 . 20 . 30 . 40 . 50 . 60 . 70 . 80 . 91 . 0 (G ,L)Y8S040A12UH1[...]
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Page 5
278436-YTG-A-0407 Unitary Products Group 5 NOTES: 1. Airflow expressed in st andard cubic feet per minute (CFM). 2. Return air is through si de opposite motor (lef t side). 3. Motor voltage at 1 15 V . 4. Airflow through across motor side (right side) may be slightly less than th e data shown above. BLOWER PERFORMANCE CFM - UPFLOW (WITHOUT FILTER) [...]
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Page 6
278436-YTG-A-0407 6 Unitary Products Group HORIZONT AL SIDEW ALL VENTING For applications whe re vertical venting is not possible, the only approved method of horizontal venting is the use of an auxiliary power vent. Approved power venters are Fields Controls Model SWG-4Y or Tjernlund Mo del GP AK-JT . Fol- low all application and i nstallation det[...]
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Page 7
278436-YTG-A-0407 Unitary Products Group 7 For additional connection diagrams for all UPG equipment refer to “Low Volt age System Wiring” document available online at www . upgnet.com in the Product Catalog Section. Thermostat Chart AC1 Single Stage A/C w/Single Stage Furnace, 1 Stage Cooling Ready - (G,L)*8/9S, XYF80-U, XYF80-U*L, XYF90-U HM1 [...]
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Page 8
Subject to change without notice. Printe d in U.S.A. 278436-YTG-A-0407 Copyright © by York International Corp. 2007. All righ ts reserved. Supersedes: 246771-YTG-C-0706 Unitary 5005 Norman Products York OK Group Drive 73069 APPL YING FIL TER PRESSURE DROP TO DETERMINE SYSTEM AIRFLOW T o determine the a pproximate airflow of the unit with a fi lter[...]