Instruction/ maintenance manual of the product LY8S York
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TECHNICAL GUIDE MODELS: GY8S/L Y8S 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.
036-21618-003 Rev. A (1205 ) 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.
036-21618-003 Rev. A (1205) Unitary Products Group 3 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 edition) and all local code s.
036-21618-003 Rev. A (1205 ) 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 Single St age Bottom Airflow Data (SCFM) Ext.
036-21618-003 Rev. A (1205) 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 . BLOWER PERFORMANCE CFM - UPFLOW (WITHOUT FILTER) - LEF T SIDE RETUR N Models Speed Single St age Left Side Airflow Data (SCFM) Ext.
036-21618-003 Rev. A (1205 ) 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 .
036-21618-003 Rev. A (1205) Unitary Products Group 7 For additional connecti on diagrams for all UPG equipment refe r to “Low V oltage System Wiring” document available online at www .
Subject to change without notice. Printed in U .S.A. 036-21618-003 Rev. A (1205) Copyright © by Unitary Products Gr oup 2005. All rights re served. Supersedes: 036-21618-002 Rev.
An important point after buying a device York LY8S (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
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If you already are a holder of York LY8S, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime York LY8S.
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