York TM8V C Series - User Manual

5402847-UIM-A-0917
TWO STAGE VARIABLE SPEED ECM
RESIDENTIAL GAS FURNACES
MODELS:TM8V*C, TMLV*C
(80% AFUE Multi-position / Low NOx)
INSTALLATION MANUAL
LIST OF SECTIONS
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ELECTRICAL POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
VENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
START-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . .22
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
REPLACEMENT PART CONTACT INFORMATION . . . . . . . . . . . .30
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
START UP SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
LIST OF FIGURES
Duct Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Vertical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Coil Flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Right Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Left Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PC Series Upflow Coil Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Left or Right application (Right Shown) . . . . . . . . . . . . . . 7
Combustible Floor Base Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Horizontal Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Attic Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Typical Suspended Furnace / Crawl Space Installation . . . . . . . . . . . 8
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Side Return Cutout Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Furnace Control Board – Communications Connections . . . . . . . . . 13
Two-stage Furnace with Communicating AC or HP . . . . . . . . . . . . . 13
Terminal Screw Wire Connection . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Furnace with Variable Capacity AC or HP . . . . . . . . . . . . . . . . . . . .14
Thermostat Chart - Single Stage Air Conditioner with
Two Stage Variable Speed Furnace . . . . . . . . . . . . . . . . . . . . . . . . .15
Thermostat Chart - Single Stage Heat Pump with
Two Stage Variable Speed Furnace . . . . . . . . . . . . . . . . . . . . . . . . .16
Thermostat Chart - Two Stage Air Conditioner with
Two Stage Variable Speed Furnace . . . . . . . . . . . . . . . . . . . . . . . . .17
Thermostat Chart - Two Stage Heat Pump with Two Stage
Variable Speed Furnace (Hot Heat Pump or Conventional) . . . . . . .18
Combustion Air Inducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Combustion Airflow Path Through The Furnace Casing to
the Burner Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Outside and Ambient Combustion Air . . . . . . . . . . . . . . . . . . . . . . . .21
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Reading Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Furnace Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
LIST OF TABLES
Unit Clearances to Combustibles (All Dimensions in Inches, and
All Surfaces Identified with the Unit in an Upflow Configuration) . . . . 4
Coil Projection Dimensions - PC Series Coils . . . . . . . . . . . . . . . . . . 6
Cabinet and Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommended Filter Sizes (High Velocity 600 FPM) . . . . . . . . . . . . 9
Nominal Manifold Pressure - High Fire . . . . . . . . . . . . . . . . . . . . . . 11
Nominal Manifold Pressure - Low Fire . . . . . . . . . . . . . . . . . . . . . . . 11
Ratings & Physical / Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . 12
Estimated Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Unconfined Space Minimum Area . . . . . . . . . . . . . . . . . . . . . . . . . .20
Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Gas Rate (CU FT/HR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Inlet Gas Pressure Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Air Flow Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
These high efficiency, compact units employ induced combustion, reli-
able hot surface ignition and high heat transfer aluminized tubular heat
exchangers. The units are factory shipped for installation in upflow or
horizontal applications and may be converted for downflow applica-
tions.
These furnaces are designed for residential installation in a basement,
closet, alcove, attic, recreation room or garage and are also ideal for
commercial applications. All units are factory assembled, wired and
tested to assure safe dependable and economical installation and oper-
ation.
These units are Category I listed and may be common vented with
another gas appliance as allowed by the National Fuel Gas Code.
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.

York TM8V C Series Specifications

General

Model	TM8V C Series
Type	Gas Furnace
Efficiency Rating	80% AFUE
Heating Capacity	40, 000 - 120, 000 BTU/h
Configuration	Upflow/Horizontal
Ignition Type	Hot Surface Ignition
Heat Exchanger Material	Aluminized Steel
Fuel Type	Natural Gas
Stages	Variable Speed
Blower Motor	Variable Speed
Warranty	Lifetime Limited on Heat Exchanger; 10-Year Limited on Parts

Summary

SECTION I: SAFETY

General Safety Alerts

Critical alerts like DANGER, WARNING, CAUTION for hazardous situations.

Specific Safety Rules and Precautions

Essential safety rules and precautions for installation and operation.

Combustion Air Quality Requirements

Requirements for combustion air quality and potential contaminants.

Compliance with Codes and Standards

SECTION I: SAFETY (Continued)

Unit Inspection and Clearances

Procedures for inspecting the unit and required clearances for location and service.

SECTION IV: GAS PIPING

Gas Safety and Installation Procedures

Critical safety warnings and procedures for gas piping installation.

SECTION IV: GAS PIPING (Continued)

Gas Orifice and Pressure Conversions for Altitude;Propane

Procedures for converting gas orifices and pressure switches for altitude and propane.

Propane and High Altitude Conversion Kit Warnings

Crucial warnings regarding propane gas and high altitude conversion kits.

SECTION V: ELECTRICAL POWER

Electrical Power and Voltage Connection Guidelines

Guidelines for connecting electrical power, including supply voltage and grounding.

Control Wiring Overview and Thermostat Connection

SECTION V: ELECTRICAL POWER (Continued)

Communicating Controls Wiring (Non-Variable Capacity)

Wiring instructions for communicating controls with non-variable capacity outdoor units.

Communicating Controls Wiring (Variable Capacity)

Wiring instructions for communicating controls with variable capacity outdoor units.

Low Voltage Control Wiring Connections

SECTION VI: VENT SYSTEM

Vent System Connections and Requirements

Procedures for connecting the vent system, including cabinet modifications and vent temperature limits.

Venting into Existing Chimneys and Common Venting

Guidelines and rules for safely venting the furnace into an existing chimney or common vent.

SECTION VI: VENT SYSTEM (Continued)

Combustion Air Sources from Outdoors

Methods for providing combustion air from outdoors and estimating free area.

Vent and Supply Air Safety Check Procedure

Safety procedures to detect inadequate ventilation causing CO spills.

Ventilated Combustion Air Requirements

CARBON MONOXIDE POISONING HAZARD

Venting System Operation and Safety Checks

Steps to ensure safe venting operation and prevent carbon monoxide poisoning.

SECTION VII: START-UP AND ADJUSTMENTS

SECTION VII: START-UP AND ADJUSTMENTS (Continued)

Gas Piping Leak Check Procedure

Procedures for performing a gas piping leak check after installation.

Manifold Gas Pressure and Input Rate Adjustment

Calculating Furnace Input Rate (Natural Gas)

SECTION VIII: SAFETY CONTROLS

Limit Controls and Temperature Rise Adjustment

Information on limit controls and adjusting temperature rise for safe operation.

Furnace Safety Controls Overview

Explanation of safety controls like blower door switch, rollout switches, and pressure switches.

SECTION VIII: SAFETY CONTROLS (Continued)

Interpreting LED Diagnostic Fault Codes

Hot Surface Ignition System and Basic Troubleshooting

Diagnostic Fault Code Storage and Retrieval

Furnace Control Diagnostics and LED Codes

SECTION X: WIRING DIAGRAM

Furnace Wiring Diagram and Fault Code Table

Fault Code Retrieval and Clearing Procedure

SECTION XI: START UP SHEET

Furnace Start-Up Sheet Overview

Furnace Configuration and Connection Verification

SECTION XI: START UP SHEET (Continued)

Gas Side and External Static Pressure Measurements