York G8C Series Installation Instructions Manual

York G8C Series Installation Instructions Manual

All position automatic ignition furnaces 50 - 125 mbh input upflow / horizontal 150 mbh input
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INSTALLATION
INSTRUCTIONS

TABLE OF CONTENTS

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . 2
FURNACE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . 3
PRE-INSTALLATION INSPECTION . . . . . . . . . . . . . . . . 4
CODE COMPLIANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
(50-125 MBH Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
(150 MBH Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
(50-125 MBH Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CONFIGURATION (50-125 MBH Models) . . . . . . . . . . . 4
CONFIGURATION (50-125 MBH Models) . . . . . . . . . . . 5
FURNACE LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . 6
COMBUSTION AND VENTILATION AIR . . . . . . . . . . . . 7
SYSTEM DESIGN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
RETURN AIR AND FILTERS . . . . . . . . . . . . . . . . . . . . . 9
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
VENTING (CATEGORY I) . . . . . . . . . . . . . . . . . . . . . . . 13
SIDEWALL VENTING . . . . . . . . . . . . . . . . . . . . . . . . . . 15
ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . 15
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
PRE-OPERATIONAL CHECKS . . . . . . . . . . . . . . . . . . 19
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . 19
FURNACE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 20
INSTALLATION CHECKS . . . . . . . . . . . . . . . . . . . . . . 21
SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . 22
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . 22
CAUTION: READ ALL SAFETY GUIDES
BEFORE YOU START TO INSTALL
YOUR FURNACE.
SAVE THIS MANUAL
ALL POSITION
AUTOMATIC IGNITION FURNACES
G8C / FG8 SERIES MODELS
50 - 125 MBH INPUT
UPFLOW / HORIZONTAL
AUTOMATIC IGNITION FURNACES
G8C / FG8 SERIES MODELS
150 MBH INPUT
EFFICIENCY
RATING
CERTIFIED
035-15241-003 Rev. A (201)

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Summary of Contents for York G8C Series

  • Page 1: Table Of Contents

    INSTALLATION ALL POSITION AUTOMATIC IGNITION FURNACES G8C / FG8 SERIES MODELS INSTRUCTIONS 50 - 125 MBH INPUT UPFLOW / HORIZONTAL AUTOMATIC IGNITION FURNACES G8C / FG8 SERIES MODELS 150 MBH INPUT TABLE OF CONTENTS GENERAL INFORMATION ..... . . 2 FURNACE SPECIFICATIONS .
  • Page 2: General Information

    035-15241-003 Rev. A (201) GENERAL INFORMATION IMPORTANT - These instructions are for the use of quali- fied individuals specially trained and experienced in installa- tion of this type equipment and related system components. IMPROPER INSTALLATION MAY CREATE A CONDITION WHERE THE OPERATION OF Installation and service personnel are required by some THE PRODUCT COULD CAUSE PERSONAL states to be licensed.
  • Page 3: Furnace Specifications

    035-15241-003 Rev. A (201) FURNACE SPECIFICATIONS FURNACE BLOWER TEMP. BTUH BTUH NOMINAL MOTOR VENT DOWNFLOW WIDTH WHEEL RISE OUTLET INPUT OUTPUT DIA. SUB-BASE SIZE °F TEMP. °F 50,000 40,000 1200 17-1/2 10 x 8 30-60 3” 1FB0318 75,000 60,000 1200 17-1/2 10 x 8 35-65...
  • Page 4: Pre-Installation Inspection

    035-15241-003 Rev. A (201) PRE-INSTALLATION INSPECTION CONVERSION INFORMATION (50-125 MBH Models) Inspect the shipping container and furnace for any evidence of shipping damage. This furnace may be shipped in either the upflow or the downflow configuration. To convert from upflow to downflow If furnace damage is found, notify freight carrier and file or vice-versa it is necessary only to exchange the top and claim.
  • Page 5: To Convert From Upflow To Downflow Configuration (50-125 Mbh Models)

    035-15241-003 Rev. A (201) TRANSITION VENT PRESSURE EXTRA HOSE SCREWS PRESSURE SWITCH VENT GASKET BLOWER TRANSITION BOTTOM GASKET BOTTOM PRESSURE VENT VENT EXTRA HOSE BLOWER SCREWS FIGURE 2 : UPFLOW/HORIZONTAL FIGURE 3 : DOWNFLOW/HORIZONTAL CONFIGURATION CONFIGURATION TO CONVERT FROM UPFLOW TO DOWNFLOW CONFIGURATION TRANSITION (50-125 MBH Models)
  • Page 6: Furnace Location

    035-15241-003 Rev. A (201) Minimum Clearances - Downflow DOWNFLOW VENT Front: ....2 inches UPFLOW OPENING VENT Back:....0 inches OPENING Sides: .
  • Page 7: Combustion And Ventilation Air

    035-15241-003 Rev. A (201) INSTALLATIONS ON COMBUSTIBLE FLOORING INSTALLATIONS IN A CONFINED SPACE (50-125 MBH MODELS) A confined space is defined as a space whose volume is less than 50 cubic feet per 1000 BTUH of the total input ratings of This furnace may not be installed directly on combustible all appliances installed in the space.
  • Page 8: Furnace Sizing And Duct System Design

    035-15241-003 Rev. A (201) The supply and return duct system must be of adequate size and designed such that the furnace will operate within the designed air temperature rise range and not exceed the max- imum designed static pressure. These values are listed in the When the furnace is installed in an attic or other table below.
  • Page 9: Return Air And Filters

    035-15241-003 Rev. A (201) RETURN AIR CONNECTION - DOWNFLOW If two duct systems are used as could be the case with a coil-blower or a self-contained A/C unit, the furnace and (50-125 MBH MODELS ONLY) A/C unit should be controlled by a single combination The return air connection to the furnace must be attached to heating and cooling thermostat which will prevent the fur- the top of the furnace.
  • Page 10: Gas Piping

    035-15241-003 Rev. A (201) DOWNFLOW (50-125 MBH MODELS ONLY) Filters must be mounted in a location where they are easily accessible for replacement, either behind a central return air grille or in a filter box mounted on top of the furnace as shown in Figure 7.
  • Page 11 035-15241-003 Rev. A (201) VENT FURNACE CONTROL VENT PIPE TRANSITION BLOWER PIPE DOOR SWITCH 3” DIAMETER VENT PIPE ROLL-OUT SHUT-OFF SWITCHES VALVE BURNERS ROLL-OUT SWITCH SURFACE DIRT LEG IGNITOR VALVE VENT BLOWER PRESSURE SWITCH FIGURE 9: DOWNFLOW CONFIGURATION (50-125 MBH MODELS ONLY) PIPE SHUT-OFF VALVE...
  • Page 12 035-15241-003 Rev. A (201) PIPE PRESSURE SWITCH SHUT-OFF VALVE VALVE VENT BLOWER SURFACE IGNITOR DIRT BURNERS ROLL-OUT SWITCH BLOWER DOOR SWITCH ROLL-OUT SWITCHES FURNACE CONTROL FIGURE 11: UPFLOW/HORIZONTAL (150 MBH MODEL ONLY) Unless prohibited by local codes, it is permissible to use a flexible corrugated metal gas connector for the last section of gas piping connected to the furnace gas valve.
  • Page 13: Venting (Category I)

    035-15241-003 Rev. A (201) VENTING (CATEGORY I) This furnace is a fan-assisted Category I furnace which oper- ates with a non-positive vent static pressure and has a flue loss of not less than 17 percent. It may be vented vertically This furnace must not be connected into any por- using B-vent (Category I) or it may be vented horizontally tion of a mechanical draft system operating under...
  • Page 14 035-15241-003 Rev. A (201) INSPECTION OF EXISTING CHIMNEY CONDENSATION Before connecting the vent connector to a chimney, the These furnaces are not intended to have condensation occur chimney passageway must be examined to ascertain in the furnace or in the venting system. Such condensation that it is clear and free of obstructions and must be can cause corrosion and premature failure of the vent sys- cleaned if previously used for venting solid or liquid fuel-...
  • Page 15: Sidewall Venting

    035-15241-003 Rev. A (201) Insofar, as is practical, close all building doors and win- dows and all doors between the space in which the appli- ances remaining connected to the common venting system are located and other spaces of the building. When sidewall venting these furnaces with a Turn on clothes dryers and any appliance not connected power venter, it is required that a barometric draft...
  • Page 16 035-15241-003 Rev. A (201) ACCESSORIES Do not attempt to wire an electronic air cleaner into the fur- nace blower relay. Damage to the furnace blower motor may A humidifier or electronic air cleaner may be used with this result. furnace. All accessories should be wired according to the manufacturer's instructions.
  • Page 17: Blower Performance

    035-15241-003 Rev. A (201) BLOWER PERFORMANCE UPFLOW, SINGLE SIDE RETURN APPLICATIONS EXTERNAL STATIC PRESSURE, INCHES W.C. SPEED MODEL 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 HIGH 1338 1309 1267 1220 1144 1070 50/40/1200 1106 1092 1081 1048 75/60/1200 HIGH 1701 1654 1619...
  • Page 18 035-15241-003 Rev. A (201) BLOWER TIMINGS Steady off - Normal operation One flash - False flame sense - Check for stuck open gas The electronic furnace control supplied on this furnace con- valve. trols the blower delay timings. Two flashes - Pressure switch stuck closed. Check for The heating on delay, from when the gas valve opens to shorted wires, bad pressure switch.
  • Page 19: Wiring Diagram

    035-15241-003 Rev. A (201) WIRING DIAGRAM DISCONNECT THE ELECTRIC POWER BEFORE SERVICING. BLOWER P-2B P-4B COOL HEAT PARK PARK P-1B P-3B COOL HEAT XFMR BDSS P-2A PARK PARK 115V 115V XFMR 11 12 XFMR P-6A P-5A 1 2 3 P-11A T’STAT P-8A P-7A...
  • Page 20: Furnace Operation

    035-15241-003 Rev. A (201) If the burners fail to light within 6-8 seconds after the gas DO NOT USE THIS APPLIANCE IF ANY PART HAS valve opens, the gas valve will close and the ignitor will BEEN UNDER WATER. IMMEDIATELY CALL A QUALI- be turned off.
  • Page 21: Installation Checks

    035-15241-003 Rev. A (201) HOW TO DETERMINE GAS INPUT RATE Where gas is metered, the input rate may be determined by the following method: Contact the gas supplier, Public Utility Company or LP (pro- pane) gas distributor to obtain the calorific gas value of the gas being used.
  • Page 22: Service Instructions

    035-15241-003 Rev. A (201) BURNER CLEANING Place thermometer in return air duct about two feet from furnace, with the tip of the thermometer as near as possi- The burners used in this furnace are specially designed to be ble to the center of the duct. non-linting and should not require periodic cleaning.
  • Page 23 035-15241-003 Rev. A (201) FIGURE 16: REPAIR PARTS VIEW (UPFLOW CONFIGURATION SHOWN) Door Panel 15. Gas Orifice Blower Door 16. Door Switch Heat Exchanger 17. Capacitor Vent Blower 18. Blower Wheel Limit Switch 19. Blower Motor Rollout Switch 20. Sensor Rod Top Shield 21.
  • Page 24 SERVICE RECORDS Subject to change without notice. Printed in U.S.A. 035-15241-003 Rev. A (201) Copyright © by York International Corp. 2001. All rights reserved. Supersedes: 035-15241-002 Rev. A (800) Unitary 5005 Norman Products York Group Drive 73069...

This manual is also suitable for:

Fg8 series

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