TECHNICAL GUIDE
AFFINITY
MODELS: PT8*DH
GAS-FIRED
HIGH EFFICIENCY TWO STAGE
DOWNFLOW/HORIZONTAL FURNACES
STANDARD & Low NOx
NATURAL GAS
40 - 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.gamanet.org.
EFFICIENCY
RATING
CERTIFIED
ISO 9001
Certified Quality
Management System
246796-YTG-D-0407
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
DESCRIPTION
These high efficiency, compact units employ induced com-
bustion, reliable hot surface ignition and high heat transfer
tubular heat exchangers. The units are factory shipped for
installation in downflow or horizontal 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 depend-
able 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 ANSI Z223.1 (latest edition).
WARRANTY
20-year limited warranty on the heat exchanger.
10-year heat exchanger warranty on commercial applica-
tions.
5-year limited parts warranty.
FEATURES
•
Two stage heating operation includes:
- Two stage gas valve
- Two stage inducer operation
This provides both increased comfort level and very
quiet unit operation
•
Delay timer allows two stage operation with single stage
thermostat
•
Acoustically insulated blower compartment for reduced
blower sound level
•
Humidifier and Electronic Air Cleaner control wires are
provided to the power wiring box for easy field connec-
tion.
•
100% shut off main gas valve for added safety
•
Rollout safety control
•
Low unit amp requirement for easy replacement appli-
cation
•
High quality two speed inducer motor for quiet operation
•
Built-in self diagnostics with fault code display
•
40 VA control transformer fuse protected
•
Cooling relay supplied for easy installation of add-on
cooling
•
Multi-speed PSC, direct-drive blower motor to match
cooling requirements
•
Adjustable fan-off settings to eliminate "cold-blow"
•
Compact 40-in. height allows installation in small space
confines
•
All models are propane convertible
•
Low NOx models have been designed to meet specific
code requirements.
•
Low NOx models may not be converted to propane
unless screens are removed.
