Unitary products group GY8S*DH Manual de Instalação descarregar pdf

268894-UIM-A-0407

EFFICIENCY

RATING

CERTIFIED

ISO 9001

Certified Quality

Management System

HIGH EFFICIENCY

TUBULAR HEAT EXCHANGER SERIES

MODELS: GY8S*DH / GM8S*DH / LY8S*DH / LM8S*DH

(Single Stage Downflow / Horizontal / Low NOx)

40 - 130 MBH INPUT

(11.72 - 38.10 KW) INPUT

INSTALLATION MANUAL

SECTION I: SAFETY

This is a safety alert symbol. When you see this symbol on

labels or in manuals, be alert to the potential for personal

injury.

Understand and pay particular attention to the signal words DANGER,

WARNING, or CAUTION.

DANGER indicates an imminently hazardous situation, which, if not

avoided, will result in death or serious injury

WARNING indicates a potentially hazardous situation, which, if not

avoided, could result in death or serious injury

CAUTION indicates a potentially hazardous situation, which, if not

avoided may result in minor or moderate injury.

It is also used to

alert against unsafe practices and hazards involving only property dam-

age.

Improper installation may create a condition where the operation of

the product could cause personal injury or property damage.

Improper installation, adjustment, alteration, service or mainte-

nance can cause injury or property damage. Refer to this manual

for assistance or for additional information, consult a qualified con-

tractor, installer or service agency.

This product must be installed in strict compliance with the installa-

tion instructions and any applicable local, state, and national codes

including, but not limited to building, electrical, and mechanical

codes.

LIST OF SECTIONS

SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

ELECTRICAL POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

TWINNING AND STAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

VENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

START-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . .20

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

LIST OF FIGURES

Combustible Floor Base Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Typical Attic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Typical Suspended Furnace / Crawl Space Installation . . . . . . . . . . . . 7

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Downflow Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Horizontal Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Thermostat Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Accessory Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Typical Twinned Furnace Application . . . . . . . . . . . . . . . . . . . . . . . . 12

Single Stage Twinning Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . 13

Two-Stage Twinning Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 13

Vent Termination 10 ft. (3.0 m) or less . . . . . . . . . . . . . . . . . . . . . . . . 14

Vent Termination more than 10 ft. (3.0 m) . . . . . . . . . . . . . . . . . . . . . 14

Vent Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Typical Sidewall Vent Application . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Typical Sidewall Vent and Termination Configuration . . . . . . . . . . . .15

Home Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Combustion Airflow Path Through The Furnace Casing . . . . . . . . . .17

Alternate Air Intake, Air Outlet and Chimney Connections . . . . . . . . .17

Air Inlet, Outlet and Chimney Connections . . . . . . . . . . . . . . . . . . . . .17

Typical Chimney Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Horizontal Air Inlet, Outlet and Chimney Connections . . . . . . . . . . . .18

Outside and Ambient Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . .18

Pressure Switch Tubing Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Reading Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Furnace Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

LIST OF TABLES

Unit Clearances to Combustibles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Minimum Duct Sizing For Proper Airflow . . . . . . . . . . . . . . . . . . . . . . . 5

Round Duct Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Cabinet and Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Recommended Filter Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Nominal Manifold Pressure - High Fire . . . . . . . . . . . . . . . . . . . . . . . . 9

Ratings & Physical / Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Roof Pitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Estimated Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Unconfined Space Minimum Area in Square Inch . . . . . . . . . . . . . . .18

Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Inlet Gas Pressure Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Filter Performance - Pressure Drop Inches W.C. and (kPa) . . . . . . . .24

Blower Performance CFM - (without filter) . . . . . . . . . . . . . . . . . . . . .25

Field Installed Accessories - Non Electrical . . . . . . . . . . . . . . . . . . . .26

1 2 3 4 5 6 ... 27 28

Resumo do Conteúdo

Página 1 - INSTALLATION MANUAL

268894-UIM-A-0407EFFICIENCYRATINGCERTIFIEDISO 9001Certified QualityManagement SystemHIGH EFFICIENCYTUBULAR HEAT EXCHANGER SERIESMODELS: GY8S*DH / GM8S

Página 2

268894-UIM-A-040710 Unitary Products GroupWire size and over current protection must comply with the National Electrical Code (NFPA-70-latest edition)

Página 3

268894-UIM-A-0407Unitary Products Group 11For additional connection diagrams for all UPG equipment refer to “Low Voltage System Wiring” document avail

Página 4 - SECTION II: DUCTWORK

268894-UIM-A-040712 Unitary Products GroupIMPORTANT: Some electronic thermostats do not have adjustable heatanticipators. They may have other type cyc

Página 5 - Unitary Products Group 5

268894-UIM-A-0407Unitary Products Group 13Single-Wire TwinningThe control in the furnace has the single-wire twinning feature. With thisfeature, a sin

Página 6 - WORK AREA

268894-UIM-A-040714 Unitary Products GroupSECTION VII: VENT SYSTEMVENT SAFETYThis Category I, furnace is designed for residential application. It mayb

Página 7 - INSTALLATION

268894-UIM-A-0407Unitary Products Group 152. This furnace must be vented into a fire clay tile lined masonrychimney only if a source of dilution air i

Página 8 - SECTION IV: GAS PIPING

268894-UIM-A-040716 Unitary Products Group† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single

Página 9 - SECTION V: ELECTRICAL POWER

268894-UIM-A-0407Unitary Products Group 17An unconfined space is not less than 50 cu.ft (1.42 m3) per 1,000 Btu/hr. (0.2928 kW) input rating for all o

Página 10 - SUPPLY VOLTAGE CONNECTIONS

268894-UIM-A-040718 Unitary Products GroupVentilated Combustion AirThe ventilated attic space or a crawl space from which the combustionair is taken m

Página 11 - Unitary Products Group 11

268894-UIM-A-0407Unitary Products Group 19Multi-story or common venting systems are permitted and must beinstalled in accordance with the National Fue

Página 12

268894-UIM-A-04072 Unitary Products GroupSPECIFIC SAFETY RULES AND PRECAUTIONS1. Only Natural gas or Propane (LP) gas are approved for use withthis fu

Página 13

268894-UIM-A-040720 Unitary Products GroupSECTION IX: START-UP AND ADJUSTMENTSThe initial start-up of the furnace requires the following additionalpro

Página 14 - SECTION VII: VENT SYSTEM

268894-UIM-A-0407Unitary Products Group 21In the USA use the following formula to calculate the furnace input.For natural gas multiply the heat conten

Página 15 - VENT PIPING ASSEMBLY

268894-UIM-A-040722 Unitary Products GroupADJUSTMENT OF MANIFOLD GAS PRESSUREInlet and manifold gas pressure may be measured by connecting the“U” tube

Página 16

268894-UIM-A-0407Unitary Products Group 23ADJUSTMENT OF TEMPERATURE RISEThe temperature rise, or temperature difference between the return airand the

Página 17 - Unitary Products Group 17

268894-UIM-A-040724 Unitary Products Group4 RED FLASHES: This indicates that a primary or auxiliary limit switchhas opened its normally closed contact

Página 18 - AIR SUPPLY OPENINGS AND DUCTS

268894-UIM-A-0407Unitary Products Group 25NOTES:1. Airflow expressed in standard cubic feet per minute (CFM) and in cubic meters per minute (m3/min).2

Página 19 - SECTION VIII: SAFETY CONTROLS

268894-UIM-A-040726 Unitary Products GroupAPPLYING FILTER PRESSURE DROP TO DETERMINE SYSTEM AIRFLOWTo determine the approximate airflow of the unit wi

Página 20 - ADJUSTMENTS

268894-UIM-A-0407Unitary Products Group 27SECTION X: WIRING DIAGRAM FIGURE 30: Wiring Diagram*268834*

Página 21 - Unitary Products Group 21

Página 22

268894-UIM-A-0407Unitary Products Group 3INSPECTIONAs soon as a unit is received, it should be inspected for possible dam-age during transit. If damag

Página 23

268894-UIM-A-04074 Unitary Products GroupInstallation in a residential garage:A gas-fired furnace for installation in a residential garage must beinst

Página 24 - FILTER PERFORMANCE

268894-UIM-A-0407Unitary Products Group 5Table 2 is a guide for determining whether the rectangular duct systemthat the furnace is being connected to

Página 25 - Unitary Products Group 25

268894-UIM-A-04076 Unitary Products GroupDownflow Air Conditioning Coil CabinetThe furnace should be installed with coil cabinet part number specifi-c

Página 26 - DETERMINE SYSTEM AIRFLOW

268894-UIM-A-0407Unitary Products Group 7SUSPENDED FURNACE / CRAWL SPACE INSTALLATIONThe furnace can be hung from floor joists or installed on suitabl

Página 27 - *268834*

268894-UIM-A-04078 Unitary Products GroupRESIDENTIAL AND MODULAR HOME DOWNFLOW RETURN PLENUM CONNECTIONThe return duct system must be connected to the

Página 28 - Group Drive 73069

268894-UIM-A-0407Unitary Products Group 9IMPORTANT: An accessible manual shut-off valve must be installedupstream of the furnace gas controls and with

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