Upflow/ Horizontal
Downflow/Horizontal
Condensing, Direct Vent
Gas-Fired Furnace
AUH2B060A936VA, AUH2B080A942VA,
AUH2C100A948VA, AUH2D120A960VA,
ADH2B060A936VA, ADH2B080A942VA,
ADH2C100A948VA, ADH2D120A960VA
Two-Stage Fan Assisted
Combustion System
AUH2
UPFLOW
ADH2
DOWNFLOW
AUH2
UPFLOW/HORIZONTAL
ADH2
DOWNFLOW/HORIZONTAL
PUB. NO. 12-1329-03
General
Features
Features and Benefits
NATURAL GAS MODELS
Central Heating furnace designs are certified to ANSI Z21.47 / CSA 2.3 for both natural and L.P. gas. Limit setting and rating data were established and approved under standard rating conditions using American National Standards Institute standards.
SAFE OPERATION
The Integrated System Control has solid state devices, which continuously monitor for presence of flame, when the system is in the heating mode of operation.
Dual solenoid combination gas valve and regulator provide extra safety.
QUICK HEATING
Durable, cycle tested, heavy gauge
alu-
minized steel heat exchanger quickly transfers heat to provide warm conditioned air to the structure.
Low energy
power vent blower, to increase efficiency and provide a positive discharge of gas fumes to the outside.
BURNERS
Multiport Inshot burners will give years of quiet and efficient service. All models can be converted to
L.P. gas without changing burners.
INTEGRATED SYSTEM CONTROL
Exclusively designed operational program provides total control of furnace limit sensors, blowers, gas valve, flame control and includes self diagnostics for ease of service. Also contains connection points for E.A.C./humidifier.
AIR DELIVERY
The four speed, direct drive blower motor, has sufficient airflow for most heating and cooling requirements, will switch from heating to cooling speeds on demand from room thermostat. The blower door safety switch will prevent or terminate furnace operation when the blower door is removed.
SECONDARY HEAT EXCHANGER
The has a special type 29-4C™stainless steel secondary heat exchanger to reclaim heat from flue gases which would normally be lost instead.
STYLING
Heavy gauge steel and “wrap-around”
cabinet construction is used in the cabinet with baked-on enamel finish for strength and beauty. The heat exchanger section of the cabinet is completely lined with foil faced fiberglass insulation.
This results in quiet and efficient operation due to the excellent acoustical and insulating qualities of fiberglass. Built-in bottom pan and alternate bottom, left or right side return air connection provision.
FEATURES AND
GENERAL OPERATION
The High Efficiency Gas Furnaces employ a Silicon Nitride Hot Surface
Ignition system, which eliminates the waste of a constant burning pilot. The integrated system control lights the main burners upon a demand for heat from the room thermostat. Complete front service access.
a. Low energy power venter
b. Vent proving pressure switch.
UH2-PSC Standard Equipment
• Direct drive, 4-speed motor
• 120 Volt Silicon Nitride Igniter
• Variable speed induced draft blower
• Direct/Non-Direct vent option
• PVC venting-1 or 2 pipe option
• Fused 24 volt control circuit
• Manual reset burner safety switches
• Power supply 115/1/60
• Convertible to horizontal on left side
• 2-stage gas valve
• Accessory hook-up capability –
Hum and EAC
• Integrated solid state control with selfdiagnostics
• Heavy gauge aluminized steel heat exchanger
• Type 29-4C™ stainless steel secondary heat exchanger
• Multi-port In-shot burners
• Quiet induced draft blower
• Lite Port™ extended system diagnostics
• Stored fault code history in micro processor noncoital memory
• Cleanable high velocity filters (upflow only)
• Hinged blower door *
• Perfect fit door latches*
• Insulated blower door*
• Gasketed blower door*
• Complete front service access
• Left/right gas connection
• Adjustable fan off times
• Optional L.P conversion kit
• Selectable cooling fan off delay eliminates need for BAY24X045 time delay kit
• Single wire twinning
•
Optional extended warranties
* (Upflow only)
© 2012 Trane All Rights Reserved 2 12-1329-03
Contents
General Features
Features and Benefits
Standard Equipment
Optional Equipment
General Data
AUH2B060A936VA
AUH2B080A942VA
AUH2C100A948VA
AUH2D120A960VA
ADH2B060A936VA
ADH2B080A942VA
ADH2C100A948VA
ADH2D120A960VA
Performance Data
Electrical Data
8
10
Field Wiring
Twinning Field Wiring
14
15
Dimensions 16
2
5
6
6
6
7
5
6
5
5
2
2
4
12-1329-03 3
Features and
Benefits
OPTIONAL EQUIPMENT
Comfort Control, Programmable 7 Day, 3-Ht, 2-Cl... .....................................................................................ACONT803AS32DA [ ]
For additional comfort control choices, see the product catalog or quick select handbook
Propane Conversion Kit ........................................................................................................................................ BAYLPKT210B [ ]
Propane Conversion Kit (stainless steel burners)................................................................................................. BAYLPSS210B [ ]
Media Air Filter, “Perfect Fit” High Efficiency (14-1/2" Wide Gas Furnace) ........................................................... TFM145A9FR0 [ ]
Media Air Filter, “Perfect Fit” High Efficiency (17-1/2" Wide Gas Furnace) ........................................................... TFM175A9FR0 [ ]
Media Air Filter, “Perfect Fit” High Efficiency (21" Wide Gas Furnace) ................................................................. TFM210A9FR0 [ ]
Media Air Filter, “Perfect Fit” High Efficiency (24-1/2" Wide Gas Furnace) ........................................................... TFM245A9FR0 [ ]
Media Air Filter, “Perfect Fit” Standard Efficiency (14-1/2" Wide Gas Furnace) ....................................................TFP145A9FR0 [ ]
Media Air Filter, “Perfect Fit” Standard Efficiency (17-1/2" Wide Gas Furnace) ....................................................TFP175A9FR0 [ ]
Media Air Filter, “Perfect Fit” Standard Efficiency (21" Wide Gas Furnace) ...........................................................TFP210A9FR0 [ ]
Media Air Filter, “Perfect Fit” Standard Efficiency (24-1/2" Wide Gas Furnace) ....................................................TFP245A9FR0 [ ]
Coil Enclosure (14-1/2" Wide Cabinets) ......................................................................................................... BAYCLE14A1422A [ ]
Coil Enclosure (17-1/2" Wide Cabinets) ....................................................................................................... BAYCLE17A1722A [ ]
Coil Enclosure (21" Wide Cabinets) .............................................................................................................. BAYCLE21A2130A [ ]
Coil Enclosure (24-1/2" Wide Cabinets) ....................................................................................................... BAYCLE24A2430A [ ]
Downflow Subbase ................................................................................................................................................. BAYBASE205 [ ]
Side Filter Rack ....................................................................................................................................................... BAYFLTR200 [ ]
Filter Kit/Horizontal Conversion AUH2B060,080 ..................................................................................................... BAYFLTR203 [ ]
Filter Kit/Horizontal Conversion AUH2C100 ............................................................................................................ BAYFLTR204 [ ]
Filter Kit/Horizontal Conversion AUH2D120 ............................................................................................................ BAYFLTR205 [ ]
High Altitude Pressure Switch Kit AUH2B060, ADH2B060 ..................................................................... BAYSWT10AHALTA1 [ ]
High Altitude Pressure Switch Kit AUH2B080,C100,D120, ADH2B080,C100,D120 ............................... BAYSWT08AHALTA1 [ ]
Concentric Vent Kit AUH2 Furnaces ...............................................................................................................BAYAIR30AVENTA [ ]
Sidewall Vent Termination Kit All 2 Pipe Direct Vent Furnaces ............................................................................BAYVENT200B [ ]
Manufactured/Mobile Home Kit All 2 Pipe Direct Vent Furnaces ........................................................................BAYMFGH100A [ ]
Cleanable Filter (14.5"/17.5" wide Upflow models) .................................................................................................. BAYFLTR317 [ ]
Cleanable Filter (21" wide Upflow models) .............................................................................................................. BAYFLTR321 [ ]
Cleanable Filter (24.5" wide Upflow models) ........................................................................................................... BAYFLTR324 [ ]
Filter Access Door Kit ............................................................................................................................................. BAYFLTR206 [ ]
AccuClean™, Whole House Air Cleaner (Upflow 14-1/2" Wide Gas Furnace) .............................................. AFD145ALFR000B [ ]
AccuClean™, Whole House Air Cleaner (Upflow 17-1/2" Wide Gas Furnace) ..............................................AFD175ALFR000B [ ]
AccuClean™, Whole House Air Cleaner (Upflow 21" Wide Gas Furnace) .....................................................AFD210ALFR000B [ ]
AccuClean™, Whole House Air Cleaner (Upflow 24-1/2" Wide Gas Furnace) ..............................................AFD245ALFR000B [ ]
AccuClean™, Whole House Air Cleaner (Downflow 14-1/2" Wide Gas Furnace) ......................................... AFD14DALFR000B [ ]
AccuClean™, Whole House Air Cleaner (Downflow 17-1/2" Wide Gas Furnace) ......................................... AFD17DALFR000B [ ]
AccuClean™, Whole House Air Cleaner (Downflow 21" Wide Gas Furnace) ............................................... AFD21DALFR000B [ ]
AccuClean™, Whole House Air Cleaner (Downflow 24-1/2" Wide Gas Furnace) ......................................... AFD24DALFR000B [ ]
1
Optional kit allows 200 ft. max. vent length from 5,000-12,000 feet above sea level. See installer's guide.
4 12-1329-03
General
Data
MODEL
TYPE
RATINGS 2
1st Stage Input BTUH
1st Stage Capacity BTUH (ICS) 3
2nd Stage Input BTUH
2nd Stage Capacity BTUH (ICS) 3
Temp. rise (Min.-Max.) °F.
AFUE
BLOWER DRIVE
Diameter - Width (In.)
No. Used
Speeds (No.)
CFM vs. in. w.g.
Motor HP
R.P.M.
Volts / Ph / Hz
COMBUSTION FAN - Type
Drive - No. Speeds
Motor HP - R.P.M
Volts / Ph / Hz
FLA
FILTER — Furnished?
Type Recommended
Hi Vel. (No.-Size-Thk.)
VENT Pipe Diameter Min. (in.)
HEAT EXCHANGER
Type -Fired
-Unfired
Gauge (Fired)
ORIFICES — Main
Nat. Gas. Qty. — Drill Size
L.P. Gas Qty. — Drill Size
GAS VALVE
PILOT SAFETY DEVICE
Type
BURNERS — Type
Number
POWER CONN. — V / Ph / Hz 4
Ampacity (In Amps)
Max. Overcurrent Protection (Amps)
PIPE CONN. SIZE (IN.)
DIMENSIONS
Crated (In.)
WEIGHT
Shipping (Lbs.) / Net (Lbs.)
*UH2B060A936VA
Upflow / Horizontal
39,000
37,440
60,000
57,600
35 - 65
96
DIRECT
10 x 7
1
4
See Fan Performance Table
1/3
1075
115/1/60
Centrifugal
Direct - Variable
1/50 - 5000
115/3/60
1.0
No
High Velocity
1 - 17 x 25 - 1 in.
2 Round
Product Specifications
1
*UH2B080A942VA
Upflow / Horizontal
52,000
49,920
80,000
76,800
35 - 65
96
DIRECT
10 x 8
1
4
See Fan Performance Table
1/3
1075
115/1/60
Centrifugal
Direct - Variable
1/50 - 5000
115/3/60
1.0
No
High Velocity
1 - 17 x 25 - 1 in.
2 Round
*UH2C100A948VA
Upflow / Horizontal
65,000
62,400
100,000
96,000
35 - 65
96
DIRECT
10 x 10
1
4
See Fan Performance Table
1/2
1075
115/1/60
Centrifugal
Direct - Variable
1/50 - 5000
115/3/60
1.0
No
High Velocity
1 - 20 x 25 - 1 in.
2.5 Round
Aluminized Steel - Type I
20
3 — 45
3 — 56
Redundant - Two Stage
Hot Surface Ignition
Multiport Inshot
3
115/1/60
9.2
15
1/2
H x W x D
41-3/4 x 19-1/2 x 30-1/2
150 / 146
Aluminized Steel - Type I
20
4 — 45
4 — 56
Redundant - Two Stage
Hot Surface Ignition
Multiport Inshot
4
115/1/60
10.2
15
1/2
H x W x D
41-3/4 x 19-1/2 x 30-1/2
158 / 156
Aluminized Steel - Type I
20
5 — 45
5 — 56
Redundant - Two Stage
Hot Surface Ignition
Multiport Inshot
5
115/1/60
12.5
20
1/2
H x W x D
41-3/4 x 23 x 30-1/2
171 / 168
*UH2D120A960VA
Upflow / Horizontal
78,000
74,880
120,000
115,200
40 - 70
96
DIRECT
11.75 x 10.62
1
4
See Fan Performance Table
3/4
1075
115/1/60
Centrifugal
Direct - Variable
1/50 - 5000
115/3/60
1.0
No
High Velocity
1 - 24 x 25 - 1 in.
3 Round
Aluminized Steel - Type I
20
6 — 45
6 — 56
Redundant - Two Stage
Hot Surface Ignition
Multiport Inshot
6
115/1/60
12.9
20
1/2
H x W x D
41-3/4 x 26-1/2 x 30-1/2
205 / 193
* May be "A" or "T"
1
Central Furnace heating designs are certified to ANSI Z21.47 / CSA 2.3.
2
For U.S. applications, above input ratings (BTUH) are up to 2,000 feet, derate 4% per 1,000 feet for elevations above 2,000 feet above sea level. For Canadian applications, above input ratings (BTUH) are up to 4,500 feet, derate 4% per 1,000 feet for elevations above 4,500 feet above sea level.
3
Based on U.S. government standard tests.
4
The above wiring specifications are in accordance with National Electrical Code; however, installations must comply with local codes.
12-1329-03 5
General
Data
MODEL
TYPE
RATINGS 2
1st Stage Input BTUH
1st Stage Capacity BTUH (ICS) 3
2nd Stage Input BTUH
2nd Stage Capacity BTUH (ICS)
3
Temp. rise (Min.-Max.) °F.
AFUE
BLOWER DRIVE
Diameter - Width (In.)
No. Used
Speeds (No.)
CFM vs. in. w.g.
Motor HP
R.P.M.
Volts / Ph / Hz
COMBUSTION FAN - Type
Drive - No. Speeds
Motor HP - R.P.M.
Volts / Ph / Hz
FLA
FILTER — Furnished?
Type Recommended
Hi Vel. (No.-Size-Thk.)
VENT Pipe Diameter Min. (in.)
HEAT EXCHANGER
Type -Fired
-Unfired
Gauge (Fired)
ORIFICES — Main
Nat. Gas. Qty. — Drill Size
L.P. Gas Qty. — Drill Size
GAS VALVE
PILOT SAFETY DEVICE
Type
BURNERS — Type
Number
POWER CONN. — V / Ph / Hz 4
Ampacity (In Amps)
Max. Overcurrent Protection (Amps)
PIPE CONN. SIZE (IN.)
DIMENSIONS
Crated (In.)
WEIGHT
Shipping (Lbs.) / Net (Lbs.)
20
PRODUCT SPECIFICATIONS
1
*DH2B060A936VA
Downflow / Horizontal
39,000
37,050
60,000
57,000
35 - 70
95
DIRECT
10.62 x 8
1
4
See Fan Performance Table
1/3
1075
115/1/60
Centrifugal
Direct - Variable
1/50 - 5000
115/3/60
1.0
No
High Velocity
2 - 14x20 - 1 in.
2 Round
Aluminized Steel - Type I
3 — 45
3 — 56
Redundant - Two Stage
Hot Surface Ignition
Multiport Inshot
3
115/1/60
9.8
15
1/2
H x W x D
41-3/4 x 19-1/2 x 30-1/2
*DH2B080A942VA
Downflow / Horizontal
52,000
49,400
80,000
76,000
35 - 70
95
DIRECT
11.75 x 8
1
4
See Fan Performance Table
1/2
1075
115/1/60
Centrifugal
Direct - Variable
1/50 - 5000
115/3/60
1.0
No
High Velocity
2 - 14x20 - 1 in.
2 Round
Aluminized Steel - Type I
20
4 — 45
4 — 56
Redundant - Two Stage
Hot Surface Ignition
Multiport Inshot
4
115/1/60
11.4
15
1/2
H x W x D
41-3/4 x 19-1/2 x 30-1/2
*DH2C100A948VA
Downflow / Horizontal
65,000
61,750
100,000
95,000
35 - 70
95
DIRECT
11.75 x 10.62
1
4
See Fan Performance Table
1/2
1075
115/1/60
Centrifugal
Direct - Variable
1/50 - 5000
115/3/60
1.0
No
High Velocity
2 - 16x20 - 1 in.
2.5 Round
Aluminized Steel - Type I
20
5 — 45
5 — 56
Redundant - Two Stage
Hot Surface Ignition
Multiport Inshot
5
115/1/60
12.5
20
1/2
H x W x D
41-3/4 x 23 x 30-1/2
*DH2D120A960VA
Downflow / Horizontal
78,000
74,880
120,000
115,200
40 - 70
96
DIRECT
11.75 x 10.62
1
4
See Fan Performance Table
3/4
1075
115/1/60
Centrifugal
Direct - Variable
1/50 - 5000
115/3/60
1.0
No
High Velocity
2 - 16x20 - 1 in.
3 Round
Aluminized Steel - Type I
20
6 — 45
6 — 56
Redundant - Two Stage
Hot Surface Ignition
Multiport Inshot
6
115/1/60
12.9
20
1/2
H x W x D
41-3/4 x 26-1/2 x 30-1/2
155/ 145 168 / 158 185 / 175
206 / 196
* May be "A" or "T"
1
Central Furnace heating designs are certified to ANSI Z21.47 / CSA 2.3.
2
For U.S. applications, above input ratings (BTUH) are up to 2,000 feet, derate 4% per 1,000 feet for elevations above 2,000 feet above sea level.
For Canadian applications, above input ratings (BTUH) are up to 4,500 feet, derate 4% per 1,000 feet for elevations above 4,500 feet above sea level.
3
Based on U.S. government standard tests.
4
The above wiring specifications are in accordance with National Electrical Code; however, installations must comply with local codes.
6 12-1329-03
Performance
Data
MODEL
*UH2B060A936VA
*UH2B080A942VA
*UH2C100A948VA
UH2 FURNACE AIRFLOW (CFM) VS. EXTERNAL STATIC PRESSURE (in. w.c.)
SPEED TAP 0.10
0.20
0.30
0.40
0.50
0.60
4- HIGH - Black 1359 1313 1264 1204 1144 1079
3- MED.-HIGH - Blue**
2- MED.-LOW - Yellow
1- LOW - Red
1232
1077
926
1199
1054
913
1161
1027
895
1116
994
871
1065
953
836
1004
904
792
4- HIGH - Black
3- MED.-HIGH - Blue**
2- MED.-LOW - Yellow
1- LOW - Red
4- HIGH - Black
3- MED.-HIGH - Blue**
2- MED.-LOW - Yellow
1- LOW - Red
4- HIGH - Black
3- MED.-HIGH - Blue**
*UH2D120A960VA
2- MED.-LOW - Yellow
1- LOW - Red
* - First letter may be "A" or "T"
** = Factory Set Heat Speed Tap Setting
1646
1366
1175
1004
1982
1892
1759
1593
2380
2042
1695
1402
1611
1356
1159
994
1912
1832
1712
1557
2334
2029
1690
1404
1573
1337
1145
997
1836
1765
1660
1521
2287
2016
1684
1406
1530
1311
1130
982
1761
1696
1604
1485
2241
1984
1668
1397
1477
1280
1108
963
1679
1621
1536
1433
2193
1952
1652
1387
2118
1892
1627
1358
1421
1243
1081
943
1593
1538
1465
1370
1496
1446
1383
1294
2043
1830
1601
1328
0.70
1004
934
845
733
1360
1197
1045
907
1267
1205
1149
1068
1870
1712
1489
1242
0.90
812
744
666
570
1200
1060
929
824
1389
1342
1275
1182
1956
1771
1545
1285
0.80
919
852
768
670
1289
1139
993
866
MODEL
*UH2B060A936VA
*UH2B080A942VA
*UH2C100A948VA
*UH2D120A960VA
CFM VS. TEMPERATURE RISE
Cubic Feet Per Minute (CFM)
700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400
64 61 55 51 48 44 41
* - First letter may be "A" or "T"
62 57 53 50 48
65 61
46
56
44
53 49 47
67 63
43
58 54 55 51 47
12-1329-03 7
Performance
Data
MODEL
*DH2B060A936VA
*DH2B080A942VA
*DH2C100A948VA
DH2 FURNACE AIRFLOW (CFM) VS. EXTERNAL STATIC PRESSURE (in. w.c.)
SPEED TAP 0.10
0.20
0.30
0.40
0.50
0.60
4- HIGH - Black 1343 1287 1228 1167 1104 1035
3- MED.-HIGH - Blue** 1162 1129 1091 1045 993 935
2- MED.-LOW - Yellow
1- LOW - Red
4- HIGH - Black
998
743
1501
987
740
1453
967
734
1402
939
725
1344
902
709
1283
855
685
1216
3- MED.-HIGH - Blue**
2- MED.-LOW - Yellow
1- LOW - Red
4- HIGH - Black
3- MED.-HIGH - Blue**
2- MED.-LOW - Yellow
*DH2D120A960VA
1- LOW - Red
4- HIGH - Black
3- MED.-HIGH - Blue**
2- MED.-LOW - Yellow
1- LOW - Red
* - First letter may be "A" or "T"
** = Factory Set Heat Speed Tap Setting
1442
1346
1225
1835
1726
1581
1401
2147
1995
1712
1424
1393
1308
1197
1772
1674
1539
1374
2074
1940
1681
1408
1341
1263
1160
1709
1622
1498
1346
2000
1885
1649
1392
1285
1212
1116
1637
1557
1440
1308
1941
1827
1602
1367
1227
1155
1062
1566
1492
1383
1269
1881
1767
1555
1341
1166
1092
1001
1485
1416
1321
1209
1807
1699
1505
1296
1103
1024
931
1405
1340
1258
1148
1732
1631
1455
1251
0.70
960
871
800
648
1145
968
869
766
1222
1164
1085
1001
1576
1462
1307
1124
0.90
782
706
644
520
986
1037
950
853
1313
1252
1172
1075
1655
1547
1381
1188
0.80
878
795
731
594
1068
CFM VS. TEMPERATURE RISE
MODEL
Cubic Feet Per Minute (CFM)
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200
*DH2B060A936VA 69 63 60 54 51 46 43 40 37
*DH2B080A942VA
*DH2C100A948VA
*DH2D120A960VA
* - First letter may be "A" or "T"
69 66 62
69
59
67
55
64
52
61
48
58
70
44
55
66
51
63
48
58
45
54 49 41
8 12-1329-03
Electrical
Data
*UH2 Wiring Diagram
(continued on next page)
12-1329-03 9
From Dwg. D344563
Electrical
Data
*UH2 Schematic Diagram
From Dwg. D344563
10 12-1329-03
Electrical
Data
*DH2 Wiring Diagram
(continued on next page)
12-1329-03 11
From Dwg. D344564
Electrical
Data
*DH2 Schematic Diagram
From Dwg. D344564
12 12-1329-03
Field
Wiring
FIELD WIRING DIAGRAM FOR 2 STAGE FURNACE
1 STAGE HEATING
USING A 1 STAGE HEATING THERMOSTAT
NO COOLING
SEE
NOTE 7
2 STAGE
FURNACE
TWIN
SEE
NOTE 8
SEE SW1 SETTINGS FOR 2ND STAGE TIMING. DEFAULT IS 10 MINUTES.
FIELD ADDED JUMPER
W1 TO W2.
B/C
SEE
NOTE 6
B/C
TO 115 V 1 PH.,
60 HZ., POWER
SUPPLY PER
LOCAL CODES
HUM SEE
NOTE 5
SEE
NOTE 7
2 STAGE
FURNACE
TWIN
EAC SEE
NOTE 5
From Dwg. 21B341333 Rev. 1
FIELD WIRING DIAGRAM FOR 2 STAGE FURNACE
2 STAGE HEATING
USING A 2 STAGE HEATING THERMOSTAT
NO COOLING
B/C
SEE
NOTE 6
B/C
TO 115 V 1 PH.,
60 HZ., POWER
SUPPLY PER
LOCAL CODES
HUM SEE
NOTE 5
EAC SEE
NOTE 5
12-1329-03 13
From Dwg. 21B342024 Rev. 0
Twinning
Field Wiring
OUTDOOR UNIT NO. 1
(WITH TRANSFORMER)
SEE NOTE 3
1 STAGE
HEATING / COOLING
THERMOSTAT
TWINNING CONNECTION DIAGRAM
FOR TWINNING UX/DX-R FURNACES
1 STAGE HEAT / 1 STAGE COOLING THERMOSTAT
FURNACE NO. 1
TWIN
FURNACE NO. 2
BLOWER OPERATION OF
UNIT NO. 2 IS SYNCRONIZED
WITH UNIT NO. 1 VIA SIGNALS
FROM TWIN CONNECTION.
TWIN
ISOLATION RELAY
(FIELD SUPPLIED)
ALTERNATE CONNECTION
OUTDOOR UNIT NO. 1
(NO TRANSFORMER)
JUMPER W1 TO W2
ON BOTH UNITS.
SEE NOTE 4
R1
ISOLATION RELAY
SEE NOTE 4
6. SEE SW1 SETTINGS FOR 2ND STAGE TIMING.
DEFAULT IS 10 MINUTES.
OUTDOOR UNIT NO. 1
(WITH TRANSFORMER)
SEE NOTE 3
B/C
SEE NOTE 5
B/C
R1
ISOLATION RELAY
(FIELD SUPPLIED)
SEE NOTE 4
B/C
2 STAGE HEATING
1 STAGE COOLING
THERMOSTAT
TWINNING CONNECTION DIAGRAM
FOR TWINNING UX/DX-R FURNACES
2 STAGE HEAT / 1 STAGE COOLING THERMOSTAT
FURNACE NO. 1
TWIN
FURNACE NO. 2
BLOWER OPERATION OF
UNIT NO. 2 IS SYNCRONIZED
WITH UNIT NO. 1 VIA SIGNALS
FROM TWIN CONNECTION.
TWIN
ISOLATION RELAY
(FIELD SUPPLIED)
ALTERNATE CONNECTION
OUTDOOR UNIT NO. 1
(NO TRANSFORMER)
ISOLATION RELAY
(FIELD SUPPLIED)
SEE NOTE 4
R1
SEE NOTE 4
ISOLATION RELAY
SEE NOTE 4
R1
R2
R2
From Dwg. 21B341336 Rev. 2
From Dwg. 21B341337 Rev. 2
B/C
SEE NOTE 5
B/C
B/C
14 12-1329-03
UH2 Dimensions
12-1329-03 15
DH2 Dimensions
16 12-1329-03
12-1329-03 17
American Standard
Heating & Air Conditioning
6200 Troup Highway
Tyler, TX 75707
Literature Order Number
File Number
12-1329-03
12-1329-03
Supersedes 12-1329-02
Date 09/12
The manufacturer has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice.
