York GY9 Quick start guide

FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
TECHNICAL GUIDE
MODELS: GY9
GAS-FIRED
CONDENSING / HIGH EFFICIENCY
DOWNFLOW/HORIZONTAL FURNACES
91% AFUE
NATURAL GAS
60 - 120 MBH INPUT
EFFICIENCY
RATING
CERTIFIED
This product was manufactured
in a plant whose quality system
is certified/registered as being
in conformity with ISO 9001.
Heating Air Conditioning
R
036-21560-001 Rev. A (0204)
DESCRIPTION
These Category IV, highly efficient, compact, condensing
type furnaces are designed for residential and commercial
installations in a basement, closet, alcove, recreation room or
garage where the ambient temperature is above 32°F, or
higher. They may be either side wall or thru-roof vented using
approved plastic type combustion air and vent piping. All
units are factory assembled, wired and tested to assure
dependable and economical installation and operation.
WARRANTY
Lifetime limited warranty on the heat exchanger.
10-year warranty on the heat exchanger in commercial
applications.
5-year limited parts warranty.
FEATURES
• Compact, easy to install, ideal height 40" cabinet
• Blower-off delay for cooling SEER improvement.
• Easy to connect power/control wiring.
• Built-in, high level self diagnostics with fault code display.
• Low unit amp requirement for easy replacement applica-
tion.
• Integrated control module for reliable, economical opera-
tion.
• May be installed as either two-pipe (sealed combustion)
or single pipe vent (using indoor combustion air)
• Top intake & vent connection allows downflow installa-
tion in narrow locations.
• Electronic Hot Surface Ignition saves fuel cost with
increased dependability and reliability.
• Induced combustion system with inshot main burners for
quiet, efficient operation.
• No special vent termination kit required.
• 100% shut off main gas valve for extra safety.
• PSC -four speed, direct drive motor with large, quiet
blower.
• 24V, 40 VA control transformer and blower relay supplied
for add-on cooling.
• Hi-tech tubular aluminized steel primary heat exchanger.
• Secondary (condensing) heat exchanger of 29-4C high-
grade stainless steel.
• Timed on, adjustable off blower capability for maximum
comfort.
• Easy toolist access from front of unit for cleaning, main-
tenance or service.
• Protection from intake, exhaust or condensate blockage.
• High velocity filter provided for field installation.

2Unitary Products Group
036-21560-001 Rev. A (0204)
Three elbows (two in vent pipe and one in the air intake pipe) are already accounted for and need not be included in the elbow count
from the Table above.
28-1/2
26-1/2
24-5/8
40
A
26-1/2
25-3/8
C
19-1/4
1-1/4 1-1/4
21-5/8
29
21-7/8
11-11/16
18-1/2
7-1/2
29
21-15/16
21-9/16
18-1/2
9-1/8
8-1/2
5/8
5/8
23-5/8
D
2-1/4
23-1/4
20
B
T’STAT WIRING
7/8” K.O.
HORIZONTAL
CONDENSATE
DRAIN 2” K.O.
7/8” JUNCTION
BOX HOLE
1-1/2” GAS
PIPE ENTRY
CONDENSATE
DRAIN 7/8” K.O.
T’STAT WIRING
7/8” K.O.
HORIZONTAL
CONDENSATE
DRAIN 2” K.O.
7/8” JUNCTION
BOX HOLE
1-1/2” GAS
PIPE ENTRY
CONDENSATE
DRAIN 7/8” K.O.
BOTTOM IMAGE
RETURN END
TOP IMAGE
SUPPLY END
BTUH (kW)
Input/Output CFM Cabinet
Size Cabinet Dimension
A (in.) A (cm) B (in.) B (cm) C (in.) C (cm) D (in.) D (cm)
60/55 (17.57/16.10) 1200 (33.98) B 17-1/2 44.4 16-1/4 41.3 15-1/8 38.4 1-3/4 4.44
80/75 (23.42/21.96) 1200 (33.98) B 17-1/2 44.4 16-1/4 41.3 15-1/8 38.4 1-3/4 4.44
80/75 (23.42/21.96) 1600 (45.31) C 21 53.3 19-3/4 50.2 18-1/2 47.0 2-1/8 5.40
100/95 (29.28/27.82) 1600 (45.31) C 21 53.3 19-3/4 50.2 18-1/2 47.0 2-1/8 5.40
100/95 (29.28/27.82) 2000 (56.63) C 21 53.3 19-3/4 50.2 18-1/2 47.0 2-1/8 5.40
120/112 (35.14/32.80) 2000 (56.63) D 24-1/2 62.2 23-1/4 59.1 21-7/8 55.6 2-1/2 6.35
COMBUSTION AIR SUPPLY AND VENT PIPING
MAXIMUM ELBOWS AND VENT LENGTHS
Models Input
BTUH (kW) Pipe Size Inches (mm) Maximum Number of Elbows* Minimum
Length
1 2 3 4 5 6 7 8
60,000 (17.6) 1-1/2 (38) 15 10 N/A N/A N/A N/A N/A N/A 1.5
60,000 (17.6) 2 (51) 60 55 50 45 40 35 25 15 1.5
60,000 (17.6) 3 (76) 85 80 75 70 65 60 50 40 10
80,000 (23.4)/1200 2 (51) 60 55 50 45 40 35 25 15 1.5
80,000 (23.4)/1200 3 (76) 85 80 75 70 65 60 50 40 10
80,000 (23.4)/1600 2 (51) 25 20 15 10 N/A N/A N/A N/A 1.5
80,000 (23.4)/1600 3 (76) 85 80 75 70 65 60 50 40 10
100,000 (29.3) 2 (51) 25 20 15 10 N/A N/A N/A N/A 1.5
100,000 (29.3) 3 (76) 80 75 70 65 60 55 45 35 1.5
120,000 (35.1) 3 (76) 55 50 45 40 35 25 15 N/A 1.5

Unitary Products Group 3
036-21560-001 Rev. A (0204)
NOTE: For high altitude conversion, an orifice change may also be required. See Form 035-14460-001 for application information.
* Wire size and overcurrent protection must comply with the National Electric Code.
NOTES:
1. For altitudes above 2000 ft. reduce capacity 4% for each 1000 ft. above sea level.
2. Wire size based on copper conductors, 60°C, 3% voltage drop.
3. Continuous return air temperature must not be below 55°F.
* ESP (External Static Pressure) .5" WG is at furnace outlet ahead of cooling coil.
NOTES:
1. All filters must be high velocity cleanable type.
FIELD WIRING DIAGRAMS POWER WIRING
HIGH ALTITUDE PRESSURE SWITCH APPLICATION
Input (MBH)
Upflow Models Output (MBH) 4,500 To 10,000 Ft.
60/1200 55 1PS0901
80/1200 74 1PS0902
80/1600 74 1PS0903
100/1600 93 1PS0901
100/2000 93 1PS0901
120/2000 112 1PS0901
ELECTRICAL AND PERFORMANCE DATA
Input Output Nominal Airflow Cabinet Width AFUE Air Temp. Rise
MBH kW MBH kW CFM m3/min In. mm % °F °C
60 18 55 16.1 1200 34.0 17-1/2 444 91 40 - 70 22 - 39
80 23 74 21.7 1200 34.0 17-1/2 444 91 35 - 65 19 - 36
80 23 74 21.7 1600 45.3 21 533 91 40 - 70 22 - 39
100 29 93 27.3 1600 45.3 21 533 91 35 - 65 19 - 36
100 29 93 27.3 2000 56.6 21 533 91 35 - 65 19 - 36
120 35 112 32.8 2000 56.6 24-1/2 622 91 35 - 65 19 - 36
Input Max. Outlet
Air Temp. Blower Blower Size TotalUnit Max.
Over-current
Protect
Min. Wire Size
(awg) @ 75 ft.
One Way
MBH kW °F °C HP Amps In. mm Amps
60 18 170 76.7 1/2 7.0 11 x 8 279 x 203 9 20 14
80 23 170 76.7 1/2 7.0 11 x 8 279 x 203 9 20 14
80 23 170 76.7 3/4 10.2 11 x 10 279 x 254 12 20 14
100 29 175 79.4 3/4 10.2 11 x 10 254 x 254 12 20 14
100 29 175 79.4 1 12.7 11 x 11 279 x 279 14 20 12
120 35 175 76.7 1 12.7 11 x 11 279 x 279 14 20 12
MODEL
NUMBER FILTER SIZE ADD-ON COOLING APPROX. OPER. WEIGHT
TONS CFM* @ .5 ESP
GY9S060B12DH11
(2) 14 x 20
1-1/2, 2, 2-1/2, 3 1550 130
GY9S080B12DH11 2, 2-1/2, 3 1530 145
GY9S080C16DH11 3, 3-1/2, 4 1860 155
GY9S100C16DH11 3, 3-1/2, 4 1830 170
GY9S100C20DH11 3-1/2, 4, 5 2000 175
GY9S120D20DH11 3-1/2, 4, 5 2100 180
NOMINAL
115 VOLT
BLK
WHT
GRN
BLK (HOT)
WHT (NEUTRAL)
GRD
ROOM
THERMOSTAT
FURNACE
CONTROL
CONDENSING
UNIT
TO AIR CONDITIONER
CONTROLS
R
W
G
Y
C
R
W
G
Y
C

4Unitary Products Group
036-21560-001 Rev. A (0204)
1. Airflow expressed in standard cubic feet per minute (CFM) and in cubic meters per minute (m3/min).
2. Motor voltage at 115 V.
FILTER PERFORMANCE
The airflow capacity data published in the “Blower Perfor-
mance” table listed above represents blower performance
WITHOUT filters. To determine the approximate blower per-
formance of the system, apply the filter drop value for the fil-
ter being used or select an appropriate value from the “Filter
Performance” table shown.
NOTE: The filter pressure drop values in the “Filter Perfor-
mance” table shown are typical values for the type of filter
listed and should only be used as a guideline. Actual pres-
sure drop ratings for each filter type vary between filter manu-
facturer.
BLOWER PERFORMANCE CFM
AIRFLOW WITH TOP RETURN
MODELS
Speed
Tap
EXTERNAL STATIC PRESSURE, INCHES W.C. (kPa)
Input/
Output/
Airflow/
cabinet
0.1 (0.025) 0.2 (0.050) 0.3 (0.075) 0.4 (0.099) 0.5 (0.124) 0.6 (0.149) 0.7 (0.174) 0.8 (0.199) 0.9 (0.224) 1.0 (0.249)
CFM m3/min CFM m3/min CFM m3/min CFM m3/min CFM m3/min CFM m3/min CFM m3/min CFM m3/min CFM m3/min CFM m3/min
60/55/
1200/B
High 1687 48 1652 47 1631 46 1595 45 1557 44 1511 43 1456 41 1382 39 1313 37 1211 34
Medium High 1193 34 1183 33 1173 33 1162 33 1142 32 1115 32 1076 30 1036 29 982 28 950 27
Medium Low 933 26 933 26 921 26 911 26 902 26 872 25 825 23 793 22 771 22 712 20
Low 752 21 745 21 731 21 718 20 698 20 652 18 602 17 580 16 536 15 496 14
80/75/
1200/B
High 1686 48 1658 47 1623 46 1572 44 1534 43 1465 41 1391 39 1305 37 1202 34 1091 31
Medium High 1257 36 1223 35 1218 34 1203 34 1177 33 1142 32 1094 31 1026 29 939 27 874 25
Medium Low 977 28 982 28 976 28 955 27 934 26 899 25 843 24 791 22 738 21 686 19
Low 775 22 777 22 757 21 733 21 698 20 663 19 627 18 584 17 549 16 490 14
80/75/
1600/C
High 2071 59 2026 57 1981 56 1935 55 1864 53 1796 51 1713 48 1625 46 1532 43 1401 40
Medium High 1583 45 1590 45 1569 44 1554 44 1532 43 1502 43 1457 41 1409 40 1327 38 1221 35
Medium Low 1256 36 1275 36 1275 36 1288 36 1275 36 1265 36 1232 35 1187 34 1126 32 1023 29
Low 937 27 939 27 936 26 945 27 942 27 936 26 912 26 874 25 810 23 726 21
100/95/
1600/C
High 1996 56 1961 56 1938 55 1896 54 1836 52 1779 50 1707 48 1625 46 1531 43 1399 40
Medium High 1449 41 1480 42 1495 42 1488 42 1488 42 1449 41 1417 40 1368 39 1299 37 1208 34
Medium Low 1167 33 1192 34 1192 34 1187 34 1202 34 1192 34 1182 33 1140 32 1097 31 1018 29
Low 932 26 900 25 871 25 840 24 805 23 761 22 710 20 663 19 641 18 623 18
100/95/
2000/C
High 2404 68 2320 66 2225 63 2138 61 2034 58 1924 54 1816 51 1692 48 1559 44 1422 40
Medium High 2018 57 1955 55 1883 53 1815 51 1750 50 1670 47 1586 45 1497 42 1394 39 1246 35
Medium Low 1626 46 1581 45 1531 43 1488 42 1418 40 1363 39 1291 37 1225 35 1123 32 964 27
Low 1336 38 1291 37 1249 35 1205 34 1155 33 1091 31 1018 29 951 27 884 25 759 21
120/112/
2000/D
High 2520 71 2432 69 2353 67 2251 64 2152 61 2042 58 1947 55 1815 51 1701 48 1525 43
Medium High 2018 57 1979 56 1945 55 1911 54 1863 53 1779 50 1705 48 1599 45 1493 42 1353 38
Medium Low 1586 45 1545 44 1501 42 1457 41 1407 40 1351 38 1287 36 1216 34 1081 31 926 26
Low 1321 37 1266 36 1213 34 1163 33 1111 31 1071 30 987 28 864 24 763 22 700 20
FILTER PERFORMANCE - PRESSURE DROP INCHES W.C. AND (KPA)
AIRFLOW RANGE MINIMUM
OPENING SIZE
FILTER TYPE
DISPOSABLE COARSE FIBER
WASHABLE**PLEATED
CFM m3/m in2cm2In W.C. kPA In W.C. kPA In W.C.. kPA
0 - 750 0 - 21.4 230 584.2 0.01 0.00249 0.01 0.00249 0.15 0.03736
751 - 1000 21.25 - 28.32 330 838.2 0.05 0.01245 0.05 0.01245 0.20 0.04982
1001 - 1250 28.33 - 35.40 330 838.2 0.10 0.02491 0.10 0.02491 0.20 0.04982
1251 - 1500 35.41 - 42.48 330 838.2 0.10 0.02491 0.10 0.02491 0.25 0.06227
1501 - 1750 42.49 - 49.55 380 965.2 0.15 0.03736 0.14 0.03487 0.30 0.07473
1751 - 2000 49.56 - 56.63 380 965.2 0.19 0.04733 0.18 0.04484 0.30 0.07473
2001 & Above 56.64 - Above 463 1176.0 0.19 0.04733 0.18 0.04484 0.30 0.07473
*. Coarse Fiber Filters are the type supplied with furnace (if supplied).

Unitary Products Group 5
036-21560-001 Rev. A (0204)
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. Determine the External System Static Pressure (ESP)
without the filter.
3. 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.
4. If total system static matches a ESP value in the airflow
table (i.e. 0.20, 0.60, etc,) the system airflow corre-
sponds to the intersection of the ESP column and Model/
Blower Speed row.
5. 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 130,000 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": 2125 CFM
Airflow @ 0.60": 2035 CFM
2. Subtract the airflow @ 0.50" from the airflow @ 0.60" to
obtain airflow difference.
2035 - 2125 = -90 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 (-90) = -72
5. Subract airflow reduction value to airflow @ 0.50" to
obtain actual airflow @ 0.58" ESP.
2125 - 72 = 2053
ACCESSORIES
PROPANE (LP) CONVERSION KIT -
1NP0347 - All units
This accessory conversion kit may be used to convert natural
gas (N) units for propane (LP) operation. Conversions must
be made by qualified distributor or dealer personnel.
CONCENTRIC VENT TERMINATION -
1CT0302 (2")
1CT0303 (3")
For use through rooftop, sidewall. Allows combustion air to
enter and exhaust to exit through single common hole. Elimi-
nates unslightly elbows for a cleaner installation.
COIL TRANSITION KIT -
1TK0917 - 17” Furnace
1TK0921 - 21” Furnace
1TK0924 - 24” Furnace
Required in downflow applications when using G*FD series
coils.
CONDENSATE NEUTRALIZER KIT - 1NK0301
Neutralizer cartidge has a 1/2" plastic tube fittings for installa-
tion in the drain line. Calcium carbonate refill media is also
avaiable from the Source 1 Parts (p/n 026-30228-000).
HIGH ALTITUDE PRESSURE SWITCHES -
Used to convert units for operation at altitudes from 4,500 ft.
to 10,000 ft. Refer to table on page 3 for proper pressure
switch application. For Application See 035-14447-000.
UNIT CLEARANCES TO COMBUSTIBLES
APPLICATION TOP FRONT REAR LEFT
SIDE RIGHT SIDE FLUE FLOOR/
BOTTOM CLOSET ALCOVE ATTIC LINE
CONTACT
DOWNFLOW130000 1"*YES YES YES NO
HORIZONTAL030110COMBUSTIBLENOYESYES
YES†
*. Special floor base or air conditioning coil required for use on combustible floor.
†. Line contact only permitted between lines formed by the intersection of the rear panel and side panel (top in horizontal position) of
the furnace jacket and building joists, studs or framing.

6Unitary Products Group
036-21560-001 Rev. A (0204)
FIELD INSTALLED ACCESSORIES - ELECTRICAL
MODEL NO. DESCRIPTION
2ET03700324 THERMOSTAT- Electronic Non-Programmable. One-stage Heat/Cool. Manual Changeover, Integral Subbase.
System Switch: Cool-Off-Heat. Fan Switch: Auto-On.
2TH13700424 THERMOSTAT- One-stage Heat. Deluxe 24V with Heat only Sub- base, does not include Fan Switch. NOTE: For One-stage Cool or
One-stage Heat/Cool, must be used with Subbase 2TB17700424.
2TB17700424 SUBBASE (24V) - One-stage heat/cool. Manual changeover, integral
subbase. System Switch: Cool-Off-Heat. Fan Switch: Auto-On.
2ET03701024 THERMOSTAT- Electronic 7 Day Programmable. One Heat/One Cool. Auto Changeover, Integral Subbase.
System Switch: Cool-Off-Heat. Fan Switch: Auto-On. Power Stealing
2ET03700024 (TS) THERMOSTAT- Electronic 7 Day Programmable. Two Heat/Two Cool. Auto Changeover, Integral Sub-base.
System Switch: Cool-Off-Heat. Fan Switch: Auto-On.

Unitary Products Group 7
036-21560-001 Rev. A (0204)
NOTES

Subject to change without notice. Printed in U.S.A. 036-21560-001 Rev. A (0204)
Copyright © by York International Corp. 2004. All rights reserved. Supersedes: Nothing
Unitary 5005 Norman
Products York OK
Group Drive 73069