INSTALLATION MANUAL
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
EFFICIENCY
RATING
CERTIFIED
ISO 9001
Certified Quality
Management System
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
LIST OF FIGURES
Transition Kit Assembly | . 6 | Sealed Combustion Air Intake Connection and Vent Connection | . . .19 |
Dimensions | . 7 | Combustion Airflow Path Through The Furnace Casing to the Burner | |
Return Filter Grill and Return Duct Installation | . 8 | Box | . . .20 |
Typical Attic Installation | . 8 | Outside and Ambient Combustion Air | . . .21 |
Typical Suspended Furnace / Crawl Space Installation | . 9 | Attic Combustion Air Termination | . . .22 |
Gas Valve | . 9 | Condensate Drain Internal Hose Routing | . . .22 |
Downflow Gas Piping | . 9 | Downflow Condensate Drain Hose Configuration | . . .23 |
Horizontal Gas Piping | . 9 | Horizontal Left Condensate Drain Hose Configuration | . . .24 |
Electrical Wiring | 11 | Horizontal Left Condensate Drain Hose Configuration | . . .25 |
Thermostat Chart | 12 | Horizontal Right Condensate Drain Hose Configuration |
|
Accessory Connections | 13 | (Option 1 - Front of Casing) | . . .27 |
Typical Twinned Furnace Application | 13 | Horizontal Right Condensate Drain Hose Configuration |
|
Single Stage Twinning Wiring Diagram | 14 | (Option 1 - Front of Casing) | . . .28 |
14 | Horizontal Right Condensate Drain Hose Configuration |
| |
Dimensions | 16 | (Option 2 - Back of Casing) | . . .29 |
Home Layout | 17 | Horizontal Right Condensate Drain Hose Configuration |
|
Downflow/Horizontal Vent Assembly | 18 | (Option 2 - Back of Casing) | . . .30 |
Termination Configuration - 1 Pipe | 18 | Pressure Switch Tubing Routing | . . .31 |
Termination Configuration - 2 Pipe | 18 | Gas Valve | . . .34 |
Termination Configuration - 2 Pipe Horizontal | 18 | Reading Gas Pressure | . . .35 |
Crawl Space Termination Configuration - 2Pipe | 19 | Furnace Control Board | . . .35 |
Double Horizontal Sealed Combustion Air and Vent Termination . . . | 19 | Wiring Diagram | . . .39 |
Double Vertical Sealed Combustion Air and Vent Termination | 19 |
|
|
LIST OF TABLES
Unit Clearances to Combustibles | . 4 | Combustion Air Intake and Vent Connection Size at Furnace |
|
Minimum Duct Sizing For Proper Airflow | . 5 | (All Models) | 16 |
Round Duct Size | . 5 | Estimated Free Area | 20 |
Cabinet and Duct Dimensions | . 7 | Free Area - Outdoor Air | 20 |
Recommended Filter Sizes | . 7 | Unconfined Space Minimum Area in Square Inches | 20 |
Nominal Manifold Pressure | 10 | Condensate Drain Hose | 22 |
Electrical and Performance Data | 10 | Inlet Gas Pressure Range | 34 |
Maximum Equivalent Pipe Length | 15 | Nominal Manifold Pressure | 34 |
Equivalent Length of Fittings | 15 | Blower Performance CFM | 37 |
Elbow Dimensions | 16 | Filter Performance - Pressure Drop Inches W.C. and (kPa) | 37 |
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.
