York TM8T Technical Manual

TECHNICAL
TECHNICAL
GUIDE
GUIDE
GAS-FIRED RESIDENTIAL
TWO STAGE PSC MULTI-POSITION
GAS FURNACES
STANDARD & Low NOx MODELS
MODELS: TM8T / TMLT
NATURAL GAS
60 - 120 MBH INPUT
Due to continuous product improvement,
specifications are subject to change without notice.
Visit us on the web at www.york.com for the most
up-to-date technical information.
Additional rating information can be found at
www.ahridirectory.org
WARRANTY
20-year limited warranty on the heat exchanger.
10-year heat exchanger warranty on commercial applications.
5-year limited parts warranty.
Extended 10-year limited parts warranty when product is
registered online within 90 days of purchase for
replacement or closing for new home construction.
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
DESCRIPTION
These compact units employ induced combustion, reliable 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 applications.
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 operation.
These units are Category I listed and may be common vented
with another gas appliance as allowed by the National Fuel Gas
Code.
FEATURES
• Two stage heating operation includes two stage gas valve,
two stage inducer operation and 4 speed PSC blower
operation. Adjustable delay timer allows two stage operation
with a single stage thermostat.
• Easily applied in upflow, horizontal left or right, or downflow
installation with minimal conversion necessary.
• Compact, easy to install, ideal height 33" tall cabinet.
• Blower-off delay for cooling SEER improvement.
• Easy access to controls to connect power/control wiring.
• Built-in, high level self diagnostics with fault code display.
• Low unit amp requirement for easy replacement application.
• All models are convertable to use propane (LP) gas.
• Electronic Hot Surface Ignition saves fuel cost with
increased dependability and reliability.
• 100% shut off main gas valve for extra safety.
• 24V, 40 VA control transformer and blower relay supplied for
add-on cooling.
• Hi-tech tubular aluminized steel primary heat exchanger.
• Solid removable bottom panel allows easy conversion.
• Airflow leakage less than 1% of nominal airflow for
ductblaster conditions.
• No knockouts to deal with, making installation easier.
• Movable duct connector flanges for application flexibility.
• Quiet inducer operation, burner, and blower operation.
• Inducer rotates for easy conversion of venting options.
• Fully supported blower assembly for easy access and
removal of blower.
• External air filters used for maximum flexibility in meeting
customers IAQ needs.
• Insulated blower compartment for thermal and acoustic
performance.
• Low NOx models have been designed to meet specific code
requirements.
• Venting applications - may be installed as a common vent
with other gas-fired appliances or use a masonry chimney.
• 1/4 turn knobs provided for easy independent door removal.
521149-UTG-C-0612