York GF9S*DH User Manual

268890-UIM-B-0607
HIGH EFFICIENCY
TUBULAR HEAT EXCHANGER SERIES
MODELS: GY9S*DH / GM9S*DH / GF9S*DH
(Single Stage Downflow/Horizontal)
40 - 120 MBH INPUT
(11.72 - 35.17 KW) INPUT
INSTALLATION MANUAL
EFFICIENCY
RATING
CERTIFIED
ISO 9001
Certified Quality
Management System
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ELECTRICAL POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TWINNING AND STAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
COMBUSTION AIR AND VENT SYSTEM . . . . . . . . . . . . . . . . . . . . .14
CONDENSATE PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
START-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . .31
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
LIST OF FIGURES
Transition Kit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Return Filter Grill and Return Duct Installation . . . . . . . . . . . . . . . . . . . 8
Typical Attic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Typical Suspended Furnace / Crawl Space Installation . . . . . . . . . . . . 9
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Downflow Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Horizontal Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Thermostat Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Accessory Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Typical Twinned Furnace Application . . . . . . . . . . . . . . . . . . . . . . . . 13
Single Stage Twinning Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . 14
Two-Stage Twinning Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 14
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Home Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Downflow/Horizontal Vent Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 18
Termination Configuration - 1 Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Termination Configuration - 2 Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Termination Configuration - 2 Pipe Horizontal . . . . . . . . . . . . . . . . . . 18
Crawl Space Termination Configuration - 2Pipe . . . . . . . . . . . . . . . . 19
Double Horizontal Sealed Combustion Air and Vent Termination . . . 19
Double Vertical Sealed Combustion Air and Vent Termination . . . . . 19
Sealed Combustion Air Intake Connection and Vent Connection . . .19
Combustion Airflow Path Through The Furnace Casing to the Burner
Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Outside and Ambient Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . .21
Attic Combustion Air Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Condensate Drain Internal Hose Routing . . . . . . . . . . . . . . . . . . . . . .22
Downflow Condensate Drain Hose Configuration . . . . . . . . . . . . . . .23
Horizontal Left Condensate Drain Hose Configuration . . . . . . . . . . . .24
Horizontal Left Condensate Drain Hose Configuration . . . . . . . . . . . .25
Horizontal Right Condensate Drain Hose Configuration
(Option 1 - Front of Casing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Horizontal Right Condensate Drain Hose Configuration
(Option 1 - Front of Casing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Horizontal Right Condensate Drain Hose Configuration
(Option 2 - Back of Casing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Horizontal Right Condensate Drain Hose Configuration
(Option 2 - Back of Casing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Pressure Switch Tubing Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Reading Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Furnace Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical and Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maximum Equivalent Pipe Length . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Equivalent Length of Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Elbow Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Combustion Air Intake and Vent Connection Size at Furnace
(All Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Estimated Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Free Area - Outdoor Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Unconfined Space Minimum Area in Square Inches . . . . . . . . . . . . .20
Condensate Drain Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Inlet Gas Pressure Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Blower Performance CFM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Filter Performance - Pressure Drop Inches W.C. and (kPa) . . . . . . . .37

York GF9S*DH Specifications

General

Fuel Type	Natural Gas
Efficiency	96% AFUE
Heating Capacity	40, 000-120, 000 BTU/h
Motor Type	ECM
Stages	Single

Summary

SECTION I: SAFETY

Safety Alerts and Symbols

General safety information indicated by symbols and signal words like DANGER, WARNING, CAUTION.

Warnings and Cautions

Specific hazard alerts and precautions to prevent injury or property damage.

Specific Safety Rules and Precautions

Detailed safety rules for installation, operation, and handling of the furnace.

Combustion Air Quality

Requirements for air quality for combustion to prevent hazardous conditions.

INSPECTION

Furnace Location and Clearances

Guidelines for furnace placement and required spacing for safe operation and access.

SECTION II: DUCTWORK

SECTION IV: GAS PIPING

Gas Safety

Critical safety warnings and precautions for gas piping installation and handling.

Gas Piping Installation

Procedures for connecting gas supply lines, including pipe types and fittings.

Propane and High Altitude Conversion Kits

SECTION V: ELECTRICAL POWER

Electrical Power Connections

Supply Voltage Connections

Low Voltage Control Wiring Connections

Thermostat Wiring Chart

SECTION VI: TWINNING AND STAGING

Twinning

Single-Wire Twinning

Single-Wire Staging

SECTION VII: COMBUSTION AIR AND VENT SYSTEM

Combustion Air and Vent Safety

Safety considerations for air intake and vent systems to ensure proper ventilation and prevent CO.

Combustion Air/Vent Pipe Sizing

Determining the correct size for air intake and vent pipes based on length and elbows.

Combustion Air / Vent Clearances

Required clearances for vent and air intake terminals from building structures and openings.

Horizontal Vent Applications and Termination

Combustion Air Supply

Requirements for supplying adequate combustion air to the furnace.

Outdoor Combustion Air

Procedures for drawing combustion air from outdoors to ensure proper operation.

SECTION VIII: CONDENSATE PIPING

Condensate Drain Termination

Proper methods for terminating condensate drain lines to prevent freezing and property damage.

Condensate Drain Trap and Drain Freeze Protection

Protecting condensate systems from freezing using heat tape and proper installation.

Condensate Drain

Downflow/Horizontal Condensate Internal Drain Configurations

SECTION IX: SAFETY CONTROLS

SECTION X: START-UP AND ADJUSTMENTS

Tools and Information Required for Startup

Essential tools, data, and preparatory steps for performing furnace startup.

Ignition System Sequence

Step-by-step process of the furnace's ignition sequence from call for heat to flame establishment.

Calculating Furnace Input

Adjustment of Manifold Gas Pressure

Adjustment of Temperature Rise

Furnace Control Diagnostics

SECTION XI: WIRING DIAGRAM