York AFFINITY PT8A12L040DH11, AFFINITY PT8A12L060DH11, AFFINITY PT8A12N040DH11, AFFINITY PT8A12N060DH11, AFFINITY PT8A12L080DH11 Technical Manual

TECHNICAL GUIDE

AFFINITY
MODELS: PT8*DH

GAS-FIRED
HIGH EFFICIENCY TWO STAGE
DOWNFLOW/HORIZONTAL FURNACES
STANDARD & Low NOx

NA TURAL GAS
40 - 120 MBH INPUT

EFFICIENCY
RATING
CERTIFIED

ISO 9001

Certified Quality

Management System

Due to continuous product improvement, spec i f ic ations
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.

246796-YTG-D-0407

DESCRIPTION

These high efficiency, compact units employ induced com­bustion, 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 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 ANSI Z223.1 (latest edition).

WARRANTY

20-year limited warranty on the heat exchanger.
10-year heat exchanger warranty on commercial applica­tions.
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 connec­tion.

• 100% shut off main gas valve for added safety

• Rollout safety control

• Low unit amp requirement for easy replacement appli­cation

• 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.

FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

246796-YTG-D-0407

B

3/4

20

4” DIAMETER

(VENT CONNECTION)

A

FRONT

5/8”

20

40

B

POWER
WIRING
7/8 K.O.

D

FRONT

TOP IMAGE

5

T’STAT

WIRING

7/8” K.O.

GAS INLET

1-1/4” X 2-1/2”

28-1/2

30-1/8

LEFT SIDE

5/8”

4” DIA. VENT

CONNECTION

3-3/4

A

20

C

1-1/4

FRONT

BOTTOM IMAGE

1-1/4

7-1/4

T’STAT

WIRING

7/8” K.O.

ALT. GAS INLET

1-1/4” X 2-1/2”

RIGHT SIDE

CABINET AND DUCT DIMENSIONS

MODEL

Airflow

CFM

Cabinet

Size

A(in.) B(in.) C(in.) D(in.)
PT8A12(N,L)040DH11 1200 A 14 1/2 13 1/4 12 10 3/8
PT8A12(N,L)060DH11 1200 A 14 1/2 13 1/4 12 10 3/8
PT8A12(N,L)080DH11 1200 A 14 1/2 13 1/4 12 10 3/8
PT8B16(N,L)080DH11 1600 B 17 1/2 16 1/4 15 11 3/4
PT8C16(N,L)080DH11 1600 C 21 19 3/4 18 1/2 13 1/2
PT8B12(N,L)100DH11 1200 B 17 1/2 16 1/4 15 11 3/4
PT8C16(N,L)100DH11 1600 C 21 19 3/4 18 1/2 13 1/2
PT8C20(N,L)120DH11 2000 C 21 19 3/4 18 1/2 13 1/2

CABINET DIMENSION

RATINGS & PHYSICAL / ELECTRICAL DATA

Input

MODEL

High/Low

MBH MBH CFM In Hp Amps In

PT8A12(N,L)040DH11 57/42 46/34 1200 14-1/2 80.0 1/2 7.7 10 x 8
PT8A12(N,L)060DH11 80/59 64/48 1200 14 1/2 80.0 1/2 7.7 10 x 8
PT8A12(N,L)080DH11 80/59 64/48 1600 17-1/2 80.0 3/4 9.6 10 x 10
PT8B16(N,L)080DH11 80/59 64/48 1600 21 80.0 3/4 9.6 10 x 10
PT8C16(N,L)080DH11 100/65 80/53 1600 17 1/2 80.0 3/4 9.6 10 x 10
PT8B12(N,L)100DH11 100/65 80/53 1600 21 80.0 3/4 9.6 10 x 10
PT8C16(N,L)100DH11 100/65 80/53 2000 21 80.0 1 12.8 11 x 10
PT8C20(N,L)120DH11 120/78 96/64 2000 21 80.0 1 12.8 11 x 10

Input/Cabinet

MODEL

High/Low

MBH °F °F °F Lbs

PT8A12(N,L)040DH11 57/42 165 25-55 35-65 9.0 20 14 107
PT8A12(N,L)060DH11 80/52 170 40-70 40-70 9.0 20 14 117
PT8A12(N,L)080DH11 80/59 155 25-55 25-55 12.0 20 14 129
PT8B16(N,L)080DH11 80/59 155 25-55 25-55 12.0 20 14 140
PT8C16(N,L)080DH11 100/65 170 40-70 40-70 12.0 20 14 128
PT8B12(N,L)100DH11 100/65 170 40-70 40-70 12.0 20 14 140
PT8C16(N,L)100DH11 100/65 170 40-70 40-70 14.0 20 12 145
PT8C20(N,L)120DH11 120/78 165 35-65 35-65 14.0 20 12 147

Wire size and over current protection must comply with the National Electrical Code (NFPA-70-latest edition) and all local codes.
The furnace shall be installed so that the electrical components are protected from water.
Annual Fuel Utilization Efficiency (AFUE) numbers are determined in accordance with DOE Test procedures.

Output BTU/H

High/Low

Max. Outlet

Air Temp

Nominal

Airflow

Low Fire Air

Temp. Rise

Cabinet

Width

High Fire

Air Temp. Rise

AFUE

Unit

Amps

Blower

Max

Over-Current

Protect

Min. wire Size

(awg) @ 75 ft

one way

Blower

Size

Operation

Weight

2 Unitary Products Group

BLOWER PERFORMANCE CFM - (WITHOUT FILTER)

MODELS Speed

0.10.20.30.40.50.60.70.80.91.0

High

PT8A12(N,L)040DH11

Medium High

Medium Low

Low

High 1500 1470 1390 1320 1240 1170 1070 960 830 700

PT8A12(N,L)060DH11

Medium High 1380 1340 1280 1210 1150 1060 970 870 760 610

Medium Low 1220 1200 1160 1110 1050 990 910 820 700 600

Low 960 950 940 920 890 840 770 710 630 530

High 1550 1480 1410 1330 1250 1150 1050 940 810 700

PT8A12(N,L)080DH11

Medium High 1400 1360 1290 1220 1150 1060 970 860 730 590

Medium Low 1230 1210 1170 1120 1060 990 910 810 680 560

Low 980 970 960 930 890 830 760 680 550 450

High 2070 2000 1930 1850 1770 1670 1580 1470 1360 1250

PT8B16(N,L)080DH11

Medium 1650 1630 1610 1560 1490 1420 1360 1270 1170 1040

Low 1410 1400 1370 1340 1320 1270 1210 1140 1050 950

High 1895 1812 1736 1624 1544 1437 1311 1153 1032 836

PT8C16(N,L)080DH11

Medium 1726 1645 1581 1491 1412 1311 1192 1049 908 750

Low 1561 1493 1430 1373 1304 1199 1089 967 816 699

High 1710 1650 1580 1510 1420 1330 1260 1160 1090 930

PT8B12(N,L)100DH11

Medium High 1480 1440 1380 1330 1270 1180 1090 980 790 630

Medium Low 1240 1230 1200 1170 1110 1030 950 850 710 600

Low 980 980 980 970 930 890 800 720 630 530

High

PT8C16(N,L)100DH11

Medium

Low

High 2400 2310 2220 2120 2010 1910 1800 1660 1520 1350

PT8C20(N,L)120DH11

Medium High 2090 2030 1970 1880 1790 1730 1640 1520 1370 1190

Medium Low 1720 1690 1650 1600 1550 1460 1370 1270 1150 980

Low 1440 1430 1400 1340 1280 1220 1140 1040 930 830

NOTES:

1. Airflow expressed in standard cubic feet per minute (CFM).

2. Motor voltage at 115 V.

1620 1590 1480 1400 1310 1240 1140 1040 910 760
1430 1390 1340 1280 1220 1140 1050 960 820 710
1210 1210 1190 1200 1100 1020 940 850 730 620

980 980 970 950 920 870 810 720 620 520

2210 2160 2100 2030 1940 1850 1750 1640 1520 1400
1640 1640 1620 1590 1530 1500 1430 1360 1270 1160
1410 1410 1370 1360 1300 1260 1210 1150 1090 1010

246796-YTG-D-0407

Airflow Data

Ext. Static Pressure

Unitary Products Group 3

246796-YTG-D-0407

HORIZONTAL SIDEWALL VENTING

For applications where vertical venting is not possible, the
only approved method of horizontal venting is the use of an
auxiliary power vent. Approved power venters are Fields
Controls Model SWG-4Y or the appropriate Tjernlund GPAK
model. Follow all application and installation details provided
by the manufacturer of the power vent. This unit may be hori­zontally vented using 4” (10.2 cm) diameter pipe with a mini­mum length of 4.5 feet (1.37 m) and a maximum length of

34.5 feet (10.82 m) with up to 4 elbows.

FILTER PERFORMANCE

The airflow capacity data published in Blower Performance
Tables above, represents blower performance WITHOUT fil­ters. To determine the approximate blower performance of
the system, apply the filter drop value for the filter being used
or select an appropriate value from the Table below.

NOTE: The filter pressure drop values in Blower Perfor­mance T ables are typical values for the type of filter listed and
should only be used as a guideline. Actual pressure drop rat­ings for each filter type vary between filter manufacturer.

RECOMMENDED FILTER SIZES

CFM Cabinet Size Top Return (in)

1200 A (2) 14 x 20
1600 B (2) 14 x 20
1200 B (2) 14 x 20
1600 C (2) 14 x 20
2000 C (2) 14 x 20

NOTES:

1. Air velocity through throwaway type filters may not exceed 300
feet per minute. All velocities over this require the use of high
velocity filters.

FILTER PERFORMANCE - PRESSURE DROP INCHES W.C. AND (KPA)

Airflow Range

CFM

0 - 750 230 0.01 0.01 0.15

751 - 1000 330 0.05 0.05 0.20
1001 - 1250 330 0.10 0.10 0.20
1251 - 1500 330 0.10 0.10 0.25
1501 - 1750 380 0.15 0.14 0.30
1751 - 2000 380 0.19 0.18 0.30

2001 & Above 463 0.19 0.18 0.30

Minimum

Opening Size

2

in

Disposable Washable Fiber Pleated

In W.C. In W.C. In W.C.

Filter Type

UNIT CLEARANCES TO COMBUSTIBLES

Application

Downflow 160036

Downflow B-Vent 1 3 0 0 0 1

Horizontal 1 6 0 0 3 6 Combustible No Yes Yes

Horizontal B-Vent 1 3 0 0 0 1 Combustible No Yes Yes

1 Special floor base or air conditioning coil required for use on combustible floor.
2 Line contact only permitted between lines formed by the intersectio n of the rear panel and side panel (top in horizontal position) of the furnace

jacket and building joists, studs or framing.

Top Front Rear

In. In. In. In. In. In.

Left

Side

Right
Side

Flue

Floor/

Bottom

1

1

1

1

Closet Alcove Attic

Yes Yes Yes No
Yes Yes Yes No

Line

Contact

2

Yes

2

Yes

4 Unitary Products Group

246796-YTG-D-0407

APPLYING FILTER PRESSURE DROP TO
DETERMINE SYSTEM AIRFLOW

To determine the approximate airflow of the unit with a filter in
place, follow the steps below:

1. Select the filter type.

2. Select the number of return air openings or calculate the
return opening size in square inches to determine the
proper filter pressure drop.

3. Determine the External System Static Pressure (ESP)
without the filter.

4. Select a filter pressure drop from the table based upon
the number of return air openings or return air opening
size and add to the ESP from Step 3 to determine the
total system static.

5. If total system static matches an ESP value in the airflow
table (i.e. 0.20, 0.60, etc,) the system airflow corre­sponds to the intersection of the ESP column and Model/
Blower Speed row .

6. If the total system static falls between ESP values in the
table (i.e. 0.58, 0.75, etc.), the static pressure may be
rounded to the nearest value in the table determining the
airflow using Step 5 or calculate the airflow by using the
following example.

Example: For a 60,000 Btuh furnace operating on high
speed blower, it is found that total system static is 0.58" w.c.
To determine the system airflow, complete the following
steps:

1. Obtain the airflow values at 0.50" & 0.60" ESP.
Airflow @ 0.50": 1240 CFM
Airflow @ 0.60": 1170 CFM

2. Subtract the airflow @ 0.50" from the airflow @ 0.60" to
obtain airflow difference.

1170 - 1240 = -70 CFM

3. Subtract the total system static from 0.50" and divide this
difference by the difference in ESP values in the table,

0.60" - 0.50", to obtain a percentage.
(0.58 - 0.50) / (0.60 - 0.50) = 0.8

4. Multiply percentage by airflow difference to obtain airflow
reduction.

(0.8) x (-70) = -56

5. Subtract airflow reduction value from airflow @ 0.50" to
obtain actual airflow @ 0.58" ESP.

1240 - 56 = 1184

ACCESSORIES

PROPANE (LP) CONVERSION KIT -

1NP0347 - All Models
These accessory conversion kits may be used to convert nat­ural gas (N) units for propane (LP) operation. Conversions

must be made by qualified distributor or dealer personnel.

COMBUSTIBLE FLOOR BASE -

1CB0314 - for 14-1/2” cabinet models
1CB0317 - for 17-1/2” cabinet models
1CB0321 - for 21” cabinet models

HIGH ALTITUDE PRESSURE SWITCHES -

For installation where the altitude is less than 8,000 feet it is
not required that the pressure switch be changed. For alti­tudes above 8,000 feet see kits below. Conversion must be
made by qualified distributor or dealer personnel.

1PS0313 - 040, 060, 080, 100 MBH
1PS0314 - 120 MBH

ROOM THERMOSTATS - A wide selection of compatible
thermosets are available to provide optimum performance
and features for any installation.

1H/1C, manual change-over electronic non-programmable
thermostat.

1H/1C, auto/manual changeover, electronic programmable,
deluxe 7-day, thermostat.

1H/1C, auto/manual changeover, electronic programmable.
* For the most current accessory information, refer to the

price book or consult factory.

Unitary Products Group 5

246796-YTG-D-0407

For additional connection diagrams for all UPG equipment refer to “Low Voltage System Wiring” document available online at
www.upgnet.com in the Product Catalog Section.

(Optional)

C

TWO STAGE

24-Volt Common

AIR CONDITIONING

Y1

Y2

First Stage Cool

Second Stage Cool

R

24-Volt Hot

24V HUMIDIFIER

Interface

Comfort Alert

C

2 STAGE PSC

24-Volt Common

FURNACE CONTROL

C

*PP32U72124

THERMOSTAT

24-Volt Common

C

*DP22U70124

THERMOSTAT

24-Volt Common

C

*DN22C00124 *PP32U71124

THERMOSTAT

24-Volt Common

Y1

First Stage Cool

Single/Second Stage

Y1

Y2

First Stage Cool

Second Stage Cool

Y2

Y1

First Stage Cool

Second Stage Cool

Y

Y2

First Stage Cool

Second Stage Cool

R

24-Volt Hot

R

24-Volt Hot

R

24-Volt Hot

R

24-Volt Hot

G

W2

W/W1

Single/First Stage Heat

E/W1

First Stage Heat

E/W1

First Stage Heat

W

First Stage Heat

Fan

Second Stage Heat

G

W2

Fan

Second Stage Heat

G

W2

Fan

Second Stage Heat

G

W2

Fan

Second Stage Heat

L

HM

Humidistat

Malfunction Light

to MLTI STG

Step 1 of Thermostat User

Configuration Menu must be set

batteries

Connection of the "C"

is optional when used with

Termainal, 24-Volt Common,

batteries

Connection of the "C"

is optional when used with

Termainal, 24-Volt Common,

Features

to ON to use Comfort Alert

Step 16 of Thermostat User

Configuration Menu must be set

set to MS 2

Step 1 of Thermostat User

Configuration Menu must be

C

*PP32U70124

THERMOSTAT

C

*DN22U00124

THERMOSTAT

Y

24-Volt Common

Y

24-Volt Common

R

Y2

First Stage Cool

Second Stage Cool

R

Y2

First Stage Cool

Second Stage Cool

RC

24-Volt Hot (Heat XFMR)

RC

24-Volt Hot (Heat XFMR)

AC9 2 Stage Scroll A/C w/2 Stage Furnace, 2 Stage Cooling Ready- PT8/9; (F,L)*8/9T, (G,L)*8/9T, XYG8S-U, XYF8S-U / XYF8S-U*L

Thermostat Chart - AC

6 Unitary Products Group

G

W2

E/W1

First Stage Heat

24-Volt Hot (Cool XFMR)

E/W1

First Stage Heat

24-Volt Hot (Cool XFMR)

Fan

Second Stage Heat

G

W2

Fan

Second Stage Heat

when used with batteries

24-Volt Common, is optional

Connection of the "C" Termainal,

when used with batteries

24-Volt Common, is optional

Connection of the "C" Termainal,

Multistage Conventional

Thermostat Installer Setup

Number 0170 - System Type -

must be set to 8 - 2 Heat/2 Cool

must be set to 6 -

Number 1 - System Type -

Thermostat Installer Setup

Number 15 - Compressor

Thermostat Installer Setup

2 Heat/2 Cool Conventional

Protection - must be set to 5

246796-YTG-D-0407

C

HEAT PUMP

TWO STAGE

C

PSC-2 STAGE

COOLING READY

FURNACE CONTROL

C

*PP32U72124

*PP32U71124

Y1

Y2 OUT

24-Volt Common

First Stage Heat/Cool

Second Stage Cool Output

Y1

Y/Y2

First Stage Cool

24-Volt Common

Single/Second Stage Cool

Y1

24-Volt Common

First Stage Heat/Cool

R

W2 OUT

W1 OUT

24-Volt Hot

First Stage Auxiliary Heat Output

Second Stage Auxiliary Heat Output

R

R

W2

W/W1

24-Volt Hot

Second Stage Heat

Single/First Stage Heat

DHM

24-Volt Hot

Dehumidistat

O

X/L

Y2

Malfunction Light

Reversing Valve–Energized in Cool

G

Fan

L

O

G

Fan

Y2

Malfunction Light

Reversing Valve–Energized in Cool

W

BSG

Auxiliary Heat

Bonnet Sensor

Second Stage Heat/Cool

HM

W2

E/W1

Second Stage Heat/Cool

First Stage Auxiliary Heat

Humidistat

Second Stage Auxiliary Heat

BS

Bonnet Sensor

(Optional)

Bonnet Sensor

(Optional)

24V HUMIDIFIER

Heat Pump to ON

Change FFuel Jumper on

Set W2 Delay on furnace to OFF

Menu must be set to Heat Pump 2

Step 1 of Thermostat User Configuration

C

Y1

*DP22U70124

24-Volt Common

First Stage Heat/Cool

Y

C

*PP32U70124 *DN22H00124

THERMOSTAT THERMOSTAT THERMOSTAT

24-Volt Common

First Stage Heat/Cool

W/031-01996- Series Demand Control; Hot Heat Pump Mode OR Conventional

HP23 Two Stage H/P - H*5B, YZE - w/Two Stage Furnace, 2 Stage Cooling Ready - PT8/9, (F,L)*8/9T, (G,L)*8/9T, XYG8S-U, XYF8S-U / XYF8S-U*L

Thermostat Chart - HP

Unitary Products Group 7

R

24-Volt Hot

E

R

RC

Emergency Heat

24-Volt Hot (Cool XFMR)

24-Volt Hot (Heat XFMR)

G

Fan

Y2

L

O

Malfunction Light

Reversing Valve–Energized in Cool

Fan

O/B

L

Y2

Reversing Valve

Malfunction Light

G

W2

E/W1

Second Stage Heat/Cool

First Stage Auxiliary Heat

Second Stage Auxiliary Heat

AUX

Auxiliary Heat

Second Stage Heat/Cool

set to Heat Pump 2

thermostat not necessary

Step 1 of Thermostat User

Configuration Menu must be

Selection of GAS/ELEC switch on

12 - 3 Heat/2 Cool Heat Pump

- System Type - must be set to

Thermostat Installer Setup Number 0170

- O/B Terminal Energized in Cooling
Thermostat Installer Setup Number 0200

Thermostat Installer Setup Number 0190 -

Reversing Valve (O/B) Operation - must be set to 0

Pump Backup Heat Source is Fossil Fuel

Thermostat Installer Setup Number 0210 -

External Fossil Fuel Kit - must be set to 0 -

- Backup Heat Source - must be set to 1 - Heat

Heat Pump Backup Heat

External Fossil Fuel Kit is Controlling

NOTES

Subject to change without notice. Printed in U.S.A. 246796-YTG-D-0407
Copyright © by York International Corp. 2007. All rights reserved. Supersedes: 246796-YTG-C-0806

Unitary 5005 Norman
Products York OK
Group Drive 73069