Technical
Information
Model and Manufacturing
numbers listed on page 3.
40" 90% Gas Furnaces
GUCA***BX** & GCCA***BX**
• Refer to Service Manual RS6600001 Rev. 2 for installation, operation, and troubleshooting information.
• All safety information must be followed as provided in
the Service Manual.
• Refer to the appropriate Parts Catalog for part number
information.
DESI GN
CE RTI FI E D
CE
R T I FI E D
Heating&Air Conditioning
®
Comfort. Quality. Trust.
This manual is to be used by qualified HVAC technicians only. Amana
does not assume any responsibility for property damage or personal injury
due to improper service procedures performed by an unqualified person.
RT6612005
Revision 0
June 2002
PRODUCT IDENTIFICATION
The model and manufacturing number are used for positive identification of component parts used in manufacturing.
When engineering and manufacturing changes take place where interchangeability of components are affected, the
manufacturing number will change.
It is very important to use the model and manufacturing numbers at all times when requesting service or parts information.
G
U
C
A 045 B X 30
Product Type
Airflow Capability
G: Gas Furnace
30: 1.5 to 3.0 Tons
40: 2.5 to 4.0 Tons
50: 3.0 to 5.0 Tons
Supply Type
C: Counterflow/Horizontal
U: Upflow/Horizontal
Additional Features
X: NOx Models
Furnace Type
C: Condensing (90%)
Design Series
B: Second Design Series (Silicon Nitride Ignition System)
Model Family
A: Air Command 90 (40" Height)
WARNING
Nominal Input
045:
45,000 Btuh
070:
70,000 Btuh
090:
90,000 Btuh
115:
115,000 Btuh
IF REPAIRS ARE ATTEMPTED BY UNQUALIFIED PERSONS, DANGEROUS CONDITIONS (SUCH AS EXPOSURE TO ELECTRICAL SHOCK) MAY
RESULT. THIS MAY CAUSE SERIOUS INJURY OR DEATH.
AMANA WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY
DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES. IF YOU PERFORM SERVICE ON YOUR OWN PRODUCT, YOU ASSUME RESPONSIBILITY
FOR ANY PERSONAL INJURY OR PROPERTY DAMAGE WHICH MAY RESULT.
CAUTION
2
PRODUCT IDENTIFICATION
The model and manufacturing number are used for positive identification of component parts used in manufacturing.
When engineering and manufacturing changes take place where interchangeability of components are affected, the
manufacturing number will change.
It is very important to use the model and manufacturing numbers at all times when requesting service or parts information.
MODEL
M/N
MODEL
M/N
GUCA045BX30 P1241601F
GCCA045BX30 P1241701F
GUCA070BX30 P1241602F
GUCA070BX40
GUCA090BX40
GUCA090BX50
GUCA115BX50
P1241603F
P1241604F
P1241605F
P1241606F
GCCA070BX30
GCCA070BX40
GCCA090BX40
GCCA090BX50
GCCA115BX50
P1241702F
P1241703F
P1241704F
P1241705F
P1241706F
3
PRODUCT DESIGN
General Operation
The GUCA and GCCA furnaces are equipped with an electronic ignition device used to light the burners and an induced draft blower to exhaust combustion products.
An interlock switch prevents furnace operation if the blower
door is not in place. Keep the blower access door in place
except for inspection and maintenance.
This furnace is also equipped with a self-diagnosing electronic control module. In the event a furnace component is
not operating properly, the control module LED will flash
on and off in a factory-programmed sequence, depending
on the problem encountered. This light can be viewed
through the observation window in the blower access door.
Refer to the Troubleshooting Chart for further explanation
of the LED codes and Abnormal Operation - Integrated Ignition Control section in the Service Instructions for an explanation of the possible problem.
The rated heating capacity of the furnace should be greater
than or equal to the total heat loss of the area to be heated.
The total heat loss should be calculated by an approved
method or in accordance with “ASHRAE Guide” or “Manual
J-Load Calculations” published by the Air Conditioning Contractors of America.
*Obtain from: American National Standards Institute 1430
Broadway New York, NY 10018
Location Considerations
•
The furnace should be as centralized as is practical
with respect to the air distribution system.
•
Do not install the furnace directly on carpeting, tile,
or combustible material other than wood flooring.
•
GCCA models require counterflow subbase kits.
•
When suspending the furnace from rafters or joists,
use 3/8" threaded rod and 2” x 2” x 3/8” angle as
shown in the Installation and Service Instructions. The
length of the rod will depend on the application and
clearance necessary.
•
When installed in a residential garage, the furnace
must be positioned so the burners and ignition source
are located not less than 18 inches (457 mm) above
the floor and protected from physical damage by vehicles.
Notes:
1. Installer must supply one or two PVC pipes: one for
combustion air (optional) and one for the flue outlet (required). Vent pipe must be either 2” or 3” in diameter,
depending upon furnace input, number of elbows, length
of run and installation (1 or 2 pipes). The optional Combustion Air Pipe is dependent on installation/code requirements and must be 2” or 3” diameter PVC.
4
2. Line voltage wiring can enter through the right or left
side of the furnace. Low voltage wiring can enter through
the right or left side of furnace.
3. Conversion kits for high altitude natural or propane gas
operation are available. See High Altitude Derate chart
for details.
4. Installer must supply the following gas line fittings, depending on which entrance is used:
Left -- Two 90º Elbows, one close nipple, straight pipe.
Right -- Straight pipe to reach gas valve.
Accessibility Clearances (Minimum)
MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
(INCHES)
POSITION*
Upflow
Counterflow
FRONT
1
1
SIDES
0
0
REAR
0
0
TOP
1
1
FLUE
0
0
FLOOR
C
NC
Horizontal
Alcove
6
0
4
0
C
* = All positioning is determined as installed unit is viewed from the front.
C = If placed on combustible floor, floor MUST be wood ONLY.
NC = For installation on non-combustible floors only. A combustible floor
subbase must be used for installations on combustible flooring.
36" at front is required for servicing or cleaning.
Note: In all cases accessibility clearance shall take precedence over clearances from the enclosure where accessibility clearances are greater. All dimensions are given in
inches.
High Altitude Derate
When this furnace is installed at high altitude, the appropriate High Altitude orifice kit must be installed. This is required due to the natural reduction in the density of both
the gas fuel and combustion air as altitude increases. The
kit will provide the proper design certified input rate within
the specified altitude range.
PROPANE AND HIGH ALTITUDE KITS
MODEL
NUMBER
0 to
7,000 ft.
7,001 to
9,000 ft.
HANG11
LPTK09
GUCA***BX**
High Altitude
Propane
GCCA***BX** Conversion Kit Natural Gas Kit
(#55 Orifices) (#44 Orifices)
9,001 to
11,000 ft.
7,001 to
11,000 ft.
7,001 to
11,000 ft.
HANG12
High Altitude
Natural Gas Kit
(#45 Orifices)
HALP10
High Altitude
LP Gas Kit
(#56 Orifices)
HAPS 27
High Altitude Pressure
Switch Kit
High altitude kits are purchased according to the installation altitude and usage of either natural or propane gas.
Refer to the chart above for a tabular listing of appropriate
altitude ranges and corresponding manufacturer’s high altitude Natural Gas and Propane Gas kits. For a tabular listing of appropriate altitude ranges and corresponding
manufacturer's High Altitude Pressure Switch kits, refer to
either the Pressure Switch Trip Points & Usage Chart in
this manual or the Accessory Charts in Service Instructions.
COMPONENT IDENTIFICATION
5
9 10
27
10
28
34
4
11
3
13
3
*
2
26
12
*
*
15
17 18
19
*
*
32 33
31
19
20
20
24
3
3
23
31
21
16
33
32
21
22
30
25
14
16
*
*
1
11
19
20
*
*
23
30
24
29
25
28
27
*
*
14
13
2 22
9
26
Upflow /Horizontal (GUCA Models)
*
*
21
15
18
17
12
19
20
21
7
8
7 6 4
BLOWER COMPARTMENT
7
BURNER COMPARTMENT
8
7
*
BLOWER COMPARTMENT
6
*
BURNER COMPARTMENT
5
1
Counterflow /Horizontal (GCCA Models)
1
Gas Valve
19 Coil Front Cover Pressure Tap
2
Gas Line Entrance (Alternate)
20 Coil Front Cover Drain Port
3
Pressure Switch(es)
21 Drain Line Penetrations
4
Gas Manifold
22 Drain Trap
5
Combustion Air Intake Connection / “Coupling”
23 Blower Door Interlock Switch
6
Hot Surface Igniter
24 Capacitor
7
Rollout Limit
25 Integrated Control Module
8
Burners
9
Flame Sensor
(with fuse and diagnostic LED)
26 24-Volt Thermostat Connections
10 Flue Pipe Connection / “Coupling”
27 Transformer (40 VA)
11 Flue Pipe (Internal)
28 Circulator Blower
12 Combustion Air Intake (Alternate)
29 Bottom Return Filter Retainer
13 Primary Limit
30 Auxiliary Limit
14 Gas Line Entrance
31 Junction Box
15 Flue Pipe Connection (Alternate)
32 Electrical Connection Inlets
16 Rubber Elbow
33 Coil Front Cover
17 Induced Draft Blower
34 Combustion Air Inlet Pipe
18 Electrical Connection Inlets (Alternate)
GUCA***BX** (Manufacturing Numbers P1241601-06F)
GCCA***BX** (Manufacturing Numbers P1241701-06F)
5
COMPONENT IDENTIFICATION
GUCA***BX**
AIR
DISCHARGE
A
28 3/4
3/4
2 1/2
20 3/16
AIR INTAKE PIPE
2" PVC
ALTERNATE
GAS SUPPLY
HOLE
LEFT SIDE
DRAIN LINE
HOLES
1 1/2
14
2 1/16
VENT/FLUE PIPE
2" PVC
DRAIN
TRAP
CL
30 1/4
CONDENSATE
DRAIN TRAP
w/ 3/4" PVC
DISCHARGE
(RIGHT OR
LEFT SIDE)
40
4 1/8
27 1/8
30 1/4
SIDE CUT-OUT
19 3/16
2 5/8
19 3/16
2
1 3/4
ALTERNATE
VENT/FLUE
LOCATION
6 1/8
23
LOW VOLTAGE
ELECTRICAL HOLE
HIGH VOLTAGE
ELECTRICAL HOLE
ALTERNATE
AIR INTAKE LOCATION
STANDARD GAS
SUPPLY HOLE
2 11/16
7 3/8
2 5/8
AIR
DISCHARGE
3/4
B
(DISCHARGE)
C
3/4
HIGH VOLTAGE
ELECTRICAL HOLE
11 3/4
16 5/8
11 3/4
9 3/8
RIGHT SIDE
DRAIN LINE
DRAIN
HOLES
TRAP
CL
LOW VOLTAGE
ELECTRICAL HOLE
32 13/16
7 7/8
1 3/4
SIDE CUT-OUT
1 5/8
1
D
BOTTOM KNOCK-OUT
23 9/16
BOTTOM KNOCK-OUT
LEFT SIDE
VIEW
RIGHT SIDE
VIEW
FRONT
VIEW
Cabinet
Size
Small
Medium
Large
Units
045__30
070__30
070__40
090__40
090__50
115__50
A
B
C
D
16-1/2
15
12-3/8
12-5/8
20-1/2
19
16-3/8
14-5/8
24-1/2
23
20-3/8
18-5/8
All dimensions are in inches.
GUCA***BX** (Manufacturing Numbers P1241601-06F)
6
PRODUCT DIMENSIONS
GCCA***BX**
LEFT SIDE
VIEW
FRONTVIEW
28 3/4
3/4
RIGHT SIDE
VIEW
A
2 1/2
AIR INTAKE PIPE
2" PVC
20 1/4
3/4
3/4
B
(RETURN AIR)
CONDENSATE
DRAIN TRAP
w/ 3/4" PVC
DISCHARGE
(RIGHT OR
LEFT SIDE)
1 3/4
LOW VOLTAGE
ELECTRICAL HOLE
VENT/FLUE PIPE
2" PVC
2 1/16
40
HIGH VOLTAGE
ELECTRICAL HOLE
ALTERNATE
VENT/FLUE
LOCATION
6 1/8
28 5/16
28 5/16
LOW VOLTAGE
ELECTRICAL HOLE
1 3/4
HIGH VOLTAGE
ELECTRICAL HOLE
ALTERNATE
AIR INTAKE LOCATION
2 11/16
19 7/8
LEFT SIDE
DRAIN LINE
HOLES
DRAIN
TRAP 2 5/8
CL
STANDARD GAS
SUPPLY HOLE
4 1/8
DRAIN
2 5/8 TRAP
C
L
18 13/16
15 1/2
RIGHT SIDE
DRAIN LINE
HOLES
14
2
11 1/2
9 13/16
11 5/8
8 1/4
18 5/8
UNFOLDED FLANGES
20 5/32
FOLDED FLANGES
9 3/4
7 3/8
ALTERNATE GAS
SUPPLY HOLE
D
UNFOLDED FLANGES
E
FOLDED FLANGES
AIR
DISCHARGE
AIR
DISCHARGE
(DISCHARGE AIR)
Cabinet
Size
Small
Medium
Large
Units
045__30
070__30
070__40
090__40
090__50
115__50
A
B
C
D
Unfolded
E
Folded
16-1/2
15
12-3/8
13-1/2
15
20-1/2
19
16-3/8
17-1/2
19
24-1/2
23
20-3/8
21-1/2
23
All dimensions are in inches.
GCCA***BX** (Manufacturing Numbers P1241701-06F)
7
PRODUCT DESIGN
PRESSURE SWITCH TRIP POINTS AND USAGE CHART
NEGATIVE
PRESSURE
ID BLOWER
WITH FLUE
NOT FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
PRESSURE
ID BLOWER
WITH FLUE
FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
PRESSURE
COIL COVER
WITH FLUE
NOT FIRING
TYPICAL SEA
LEVEL DATA
NEGATIVE
PRESSURE
COIL COVER
WITH FLUE
FIRING
TYPICAL SEA
LEVEL DATA
GUCA045BX30
GCCA045BX30
-1.00
-1.05
-0.65
-1.10
-0.37
20197305
20197306
-0.37
GUCA070BX30
GCCA070BX30
-0.80
-0.95
-0.60
-1.10
-0.37
20197305
20197306
GUCA070BX40
GCCA070BX40
-0.70
-0.85
-0.80
-1.30
-0.37
GUCA090BX40
GCCA090BX40
-0.60
-0.75
-0.80
-1.30
GUCA090BX50
GCCA090BX50
-0.60
-0.85
-0.80
GUCA115BX50
GCCA115BX50
-0.60
-0.85
-1.40
MODEL
PRESSURE SWITCH TRIP POINTS AND USAGE
0 to 7,000 ft.
7,001 to 11,000 ft.
TRIP POINT COIL COVER TRIP POINT ID BLOWER
COIL COVER PRESSURE ID BLOWER PRESSURE
SWITCH
PRESSURE
PRESSURE
SWITCH
PART #
SWITCH
SWITCH
PART #
TRIP POINT
COIL COVER
PRESSURE
SWITCH
TRIP POINT
ID BLOWER
PRESSURE
SWITCH
HIGH
ALTITUDE
KIT
20197305
20197306
-0.37
-0.16
HAPS27
20197307
-0.37
20197305
20197306
-0.37
-0.16
HAPS27
20197307
20197305
20197306
-0.37
20197305
20197306
-0.37
-0.16
HAPS27
20197307
-0.37
20197305
20197306
-0.37
20197305
20197306
-0.37
-0.16
HAPS27
20197307
-1.30
-0.37
20197305
20197306
-0.37
20197305
20197306
-0.37
-0.16
HAPS27
20197307
-1.90
-0.37
20197305
20197306
-0.37
20197305
20197306
-0.37
-0.16
HAPS27
20197307
Note: All installations above 7,000 ft. require a pressure switch change. For installations in Canada the Amana 90% furnace is certified only to 4500.ft.
Note: Replacement pressure switch number is listed below high altitude kit number.
Note: All negative pressure readings are in inches of water column (" w.c.).
T.O.D. PRIMARY LIMIT
Part Number
Open Setting (°F)
Color Code(s)
GUCA045BX30
GUCA070BX30
GUCA070BX40
GUCA090BX40
GUCA090BX50
GUCA115BX50
GCCA045BX30
GCCA070BX30
GCCA070BX40
GCCA090BX40
GCCA090BX50
GCCA115BX50
20162903 20162904 20162905 20162906 20162907
160
Blue
150
Brown
1
1
145
Yellow
170
White
155
Orange
1
1
1
1
1
1
1
1
1
1
ROLLOUT LIMIT SWITCHES
10123514 10123515
or
or
Part Number
10123533 10123534
Open Setting (°F)
200
220
Color Code(s)
Yellow
Orange
GUCA045BX30
1
GUCA070BX30
2
GUCA070BX40
GUCA090BX40
2
GUCA090BX50
2
GUCA115BX50
2
GCCA045BX30
GCCA070BX30
GCCA070BX40
GCCA090BX40
GCCA090BX50
GCCA115BX50
AUXILIARY LIMIT SWITCHES
10123506 10123516
or
10123518
Part Number
or
10123525 10123535
Open Setting (°F)
160
150
170
Color Code(s)
Orange
Red
Blue
GUCA045BX30
1
GUCA070BX30
1
GUCA070BX40
1
GUCA090BX40
1
GUCA090BX50
1
GUCA115BX50
1
GCCA045BX30
GCCA070BX30
GCCA070BX40
GCCA090BX40
GCCA090BX50
GCCA115BX50
8
10123519
160
Pink
2
2
2
2
2
2
10123517
210
White
2
1
2
2
2
2
2
PRODUCT DESIGN
Coil Matches:
A large array of Amana coils are available for use with the new GUCA and GCCA furnaces, in either upflow, counterflow,
or horizontal applications. These coils are available in both cased and uncased models, with or without a TXV expansion
device. These new 90%+ furnaces match up with the existing Amana coils as shown in the chart below.
Btuh
Input
Cabinet
Width
Air Flow
(tons)
45,000
16 1/2"
1 1/2 - 3
70,000
16 1/2"
2 - 3 1/2
70,000
20 1/2"
2 1/2 - 4
90,000
20 1/2"
2 1/2 - 4
90,000
24 1/2"
3-5
115,000
24 1/2"
3-5
CAA_F*C
Cased
A-Coils
CCA_FSC
Uncased
A-Coils
CHA_TCC
Cased
TXV A-Coils
CCA18FCC
CCA24FCC
CCA30FCC
CCA36FCC
CCA42FCC
CCA18FSC
CCA24FSC
CCA30FSC
CCA36FSC
CCA42FSC
CHA18TCC
CHA24TCC
CHA30TCC
CHA36TCC
CHA_TSC
Uncased
TXV A-Coils
CCF_F*C
Horiz.
A-Coils
CHF_TCC
Horiz.
A-Coils
CHA18TSC
CHA24TSC
CHA30TSC
CHA36TSC
CCF24FCC
CCF30FCC
CCF36FCC
CHF18TCC
CHF24TCC
CHF30TCC
CHF36TCC
CHF42TCC
CHF48TCC
CCA30FDC
CCA36FDC
CCA42FDC
CCA48FCC
CCA48FSC
CHA42TCC
CHA42TSC
CCF24FDC
CCF36FDC
CCF42FCC
CCF48FCC
CCA36FKC
CCA48FDC
CCA54FCC
CCA57FCC
CCA60FCC
CCA54FSC
CCA57FSC
CCA60FSC
CHA48TCC
CHA54TCC
CHA57TCC
CHA60TCC
CHA48TSC
CHA54TSC
CHA57TSC
CHA60TSC
CCF48FDC
CCF60FCC
Coil Matches (for the Amana RSD units using R-410A):
Cabinet Air Flow
Width
(tons)
CA_FCA
Cased
A-Coils
CF_FCA
Horizontal
A-Coils
45,000
16-1/2"
1 1/2 - 3
CA36FCA
CF30FCA
70,000
20-1/2"
2 1/2 - 4
CA42FCA
CF36FCA
90,000
24-1/2"
3-5
CA48FCA
CA57FCA
CF48FCA
CF60FCA
Btuh
Input
115,000
24-1/2"
3-5
9
PRODUCT DESIGN
Thermostats:
The following Amana Thermostats are suggested for use with the GUCA and GCCA Furnace Models:
Thermostats
Thermostat
Man/Auto
Programmable
Cool
Heat
Batt. Powered
Batt. Bkup*
Shape
Color
M0380101
Man. Changeover
No
1
1
No
No
Rectangular
Beige
1213401
Man. Changeover
Yes
1
1
Yes
No
Rectangular
White
1213402
Man. Changeover
No
1
1
Yes
No
Rectangular
White
1213408
Man. or Auto Changeover
Yes
1
1
No
Yes
Rectangular
White
Filters:
Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or
CAN/ULCS111 standards. Installing this furnace without filters will void the unit warranty.
Upflow Filters
This furnace has provisions for the installation of return air filters at the side and/or bottom return. The furnace will
accommodate the following filter sizes depending on cabinet size:
Cabinet
Width
(in.)
All
Side Return(s)
Approx.
Nominal
Filter Size Flow Area
2
(in.)
(in )
16 x 25 x 1
400
Cabinet
Width
(in.)
16-1/2
20-1/2
24-1/2
Bottom Return
Approx.
Nominal
Filter Size Flow Area
2
(in.)
(in )
14 x 25 x 1
350
16 x 25 x 1
400
20 x 25 x 1
500
Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere
in the duct system such as a central return.
Cooling Airflow Requirement
(CFM)
600 800 1000 1200 1400 1600 2000
Cooling Airflow Requirement
(CFM)
600 800 1000 1200 1400 1600 2000
045__30 376*
384
480
576
---
---
---
045__30 188*
192
240
288
---
---
070__30
---
564*
564*
564*
672
---
---
070__30
---
282*
282*
282*
336
---
---
---
---
564*
564*
672
768
---
---
---
260*
260*
336
384
---
GUCA___BX__
070__40
Model
(Input__Airflow) 090__40
GUCA___BX__
070__40
Model
(Input__Airflow) 090__40
---
---
---
752*
752*
752*
768
---
---
---
376*
376*
376*
384
---
090__50
---
---
---
752*
752*
768
800
090__50
---
---
---
376*
376*
384
480
115__50
---
---
---
940*
940*
940*
800
115__50
---
---
---
470*
470*
470*
480
*Minimum filter area dictated by heating airflow requirement.
*Minimum filter area dictated by heating airflow requirement.
Disposable Minimum Filter Area (in2)
Permanent Minimum Filter Area (in2)
[Based on a 300 ft/min filter face velocity]
[Based on 600 ft/min filter face velocity]
10
PRODUCT DESIGN
Counterflow Filters
This furnace has provisions for the installation of return air filters at the counterflow top return. The furnace will
accommodate the following filter sizes depending on cabinet size:
Counterflow Top Return
Return Air
Cabinet Width
Optional
Access
Door
"A"
Min
16 1/2
20 1/2
24 1/2
16 1/2
20 1/2
24 1/2
16 1/2
20 1/2
24 1/2
Filter Area Qty Filter Size Dimension "A"
(in)
(in)
(in2)
600
2
15 X 20 X 1
800
2
20 X 20 X 1
1000
2
25 X 20 X 1
14.2
13.0
11.3
19.7
18.8
17.7
25.0
24.3
23.4
Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere
in the duct system such as a central return.
Cooling Airflow Requirement
(CFM)
600 800 1000 1200 1400 1600 2000
Cooling Airflow Requirement
(CFM)
600 800 1000 1200 1400 1600 2000
045__30 376*
384
480
576
---
---
---
045__30 188*
192
240
288
---
---
070__30
---
564*
564*
564*
672
---
---
070__30
---
282*
282*
282*
336
---
---
---
---
564*
564*
672
768
---
---
---
260*
260*
336
384
---
GCCA___BX__
070__40
Model
(Input__Airflow) 090__40
---
---
752*
752*
752*
768
---
090__50
---
---
---
752*
752*
768
960
115__50
---
---
---
940*
940*
940*
960
GCCA___BX__
070__40
Model
(Input__Airflow) 090__40
---
---
---
376*
376*
376*
384
---
090__50
---
---
---
376*
376*
384
480
115__50
---
---
---
470*
470*
470*
480
*Minimum filter area dictated by heating airflow requirement.
*Minimum filter area dictated by heating airflow requirement.
Disposable Minimum Filter Area (in2)
Permanent Minimum Filter Area (in2)
[Based on a 300 ft/min filter face velocity]
[Based on 600 ft/min filter face velocity]
11
FURNACE SPECIFICATIONS
Model
GUCA045BX30 GUCA070BX30 GUCA070BX40 GUCA090BX40 GUCA090BX50 GUCA115BX50
Btuh
Input (US)
46,000
69,000
69,000
92,000
92,000
115,000
Output (US)
42,800
64,400
63,900
86,000
85,300
106,500
Input (CAN)
46,000
69,000
69,000
92,000
90,000
115,000
Output (CAN)
42,800
64,400
64,400
86,000
85,300
106,500
92.1%
92.1%
92.1%
92.1%
92.1%
92.1%
Rated External Static (" w.c.)
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
Temperature Rise (°F)
A.F.U.E.
35 - 65
35 - 65
35 - 65
35 - 65
35 - 65
35 - 65
ID Blower Pressure Switch Trip Point (" w.c.)
-0.37
-0.37
-0.37
-0.37
-0.37
-0.37
Front Cover Pressure Switch Trip Point (" w.c.)
-0.37
-0.37
-0.37
-0.37
-0.37
-0.37
Blower Wheel (D" x W")
11 x 6
11 x 7
11 x 9
11 x 9
11 x 9
11 x 10
Blower Horsepower
1/3
1/2
1/2
1/2
3/4
1/2
Blower Speeds
4
4
4
4
4
4
1196
1407
1643
1544
2017
1976
Max CFM @ 0.5 E.S.P.
Power Supply
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
Minimum Circuit Ampacity (MCA)
9.0
9.8
8.9
8.9
12.2
10.9
Maximum Overcurrent Device
15.0
15.0
15.0
15.0
15.0
15.0
Transformer (VA)
40
40
40
40
40
40
Heat Anticipator (Amps)
0.7
0.7
0.7
0.7
0.7
0.7
Primary Limit Setting (°F)
150
150
160
150
150
150
Auxiliary Limit Setting (°F)
150
150
150
150
150
160
Rollout Limit Setting (°F)
Fan Delay On Heating
Off Heating *
Fan Delay On Cooling
Off Cooling
Gas Supply Pressure (Natural/Propane) ("w.c.)
200
200
210
200
220
220
30 secs.
30 secs.
30 secs.
30 secs.
30 secs.
30 secs.
90 secs.
90 secs.
90 secs.
90 secs.
90 secs.
90 secs.
5 sec.
5 sec.
5 sec.
5 sec.
5 sec.
5 sec.
45 secs.
45 secs.
45 secs.
45 secs.
45 secs.
45 secs.
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
#43 / #55
#43 / #55
#43 / #55
#43 / #55
#43 / #55
#43 / #55
Number of Burners
2
3
3
4
4
5
Vent Connector Diameter (inches)
2
2
2
2
2
2
Combustion Air Connector Diameter (inches)
2
2
2
2
2
2
131
144
152
166
175
187
Manifold Pressure (Natural/Propane) ("w.c.)
Orifice Size (Natural/Propane)
Shipping Weight (lbs.)
* Off Heating - This fan delay timing is adjustable (60, 90, 120 or 180 seconds), 90 seconds as shipped.
1. These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane
operation.
2. For elevations above 2000 feet the rating should be reduced by 4% for each 1000 feet above sea level. The furnace
must not be derated, orifice changes should only be made if necessary for altitude.
3. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufacturers
method or in accordance with the "A.S.H.R.A.E. GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the
AIR CONDITIONING CONTRACTORS OF AMERICA. The total heat loss calculated should be equal to or less than
the heating capacity. Output based on D.O.E. test procedures, steady state efficiency times output.
4. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
12
FURNACE SPECIFICATIONS
Model
GCCA045BX30 GCCA070BX30 GCCA070BX40 GCCA090BX40 GCCA090BX50 GCCA115BX50
Btuh
Input (US)
46,000
69,000
69,000
92,000
92,000
115,000
Output (US)
43,000
65,400
63,300
87,500
86,200
109,100
Input (CAN)
46,000
69,000
69,000
92,000
92,000
115,000
Output (CAN)
43,000
65,400
63,300
87,500
86,200
109,100
92.1%
92.1%
92.1%
92.1%
92.1%
92.1%
Rated External Static (" w.c.)
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
Temperature Rise (°F)
A.F.U.E.
35 - 65
35 - 65
35 - 65
40 - 70
35 - 65
40 - 70
ID Blower Pressure Switch Trip Point (" w.c.)
-0.37
-0.37
-0.37
-0.37
-0.37
-0.37
Front Cover Pressure Switch Trip Point (" w.c.)
-0.37
-0.37
-0.37
-0.37
-0.37
-0.37
Blower Wheel (D" x W")
11 x 6
11 x 7
11 x 9
11 x 9
11 x 9
11 x 10
Blower Horsepower
1/3
1/2
1/2
1/2
3/4
1/2
Blower Speeds
4
4
4
4
4
4
1195
1324
1590
1581
1891
1849
Max CFM @ 0.5 E.S.P.
Power Supply
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
Minimum Circuit Ampacity (MCA)
9.0
9.8
8.9
8.9
12.2
10.9
Maximum Overcurrent Device
15.0
15.0
15.0
15.0
15.0
15.0
Transformer (VA)
40
40
40
40
40
40
Heat Anticipator (Amps)
0.7
0.7
0.7
0.7
0.7
0.7
Primary Limit Setting (°F)
170
170
170
150
170
155
Auxiliary Limit Setting (°F)
160
160
170
160
170
160
Rollout Limit Setting (°F)
Fan Delay On Heating
Off Heating *
Fan Delay On Cooling
Off Cooling
Gas Supply Pressure (Natural/Propane) ("w.c.)
210
210
210
220
220
210
30 secs.
30 secs.
30 secs.
30 secs.
30 secs.
30 secs.
90 secs.
90 secs.
90 secs.
90 secs.
90 secs.
90 secs.
5 sec.
5 sec.
5 sec.
5 sec.
5 sec.
5 sec.
45 secs.
45 secs.
45 secs.
45 secs.
45 secs.
45 secs.
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
#43 / #55
#43 / #55
#43 / #55
#43 / #55
#43 / #55
#43 / #55
Number of Burners
2
3
3
4
4
5
Vent Connector Diameter (inches)
2
2
2
2
2
2
Combustion Air Connector Diameter (inches)
2
2
2
2
2
2
132
145
153
167
176
188
Manifold Pressure (Natural/Propane) ("w.c.)
Orifice Size (Natural/Propane)
Shipping Weight (lbs.)
* Off Heating - This fan delay timing is adjustable (60, 90, 120 or 180 seconds), 90 seconds as shipped.
1. These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane
operation.
2. For elevations above 2000 feet the rating should be reduced by 4% for each 1000 feet above sea level. The furnace
must not be derated, orifice changes should only be made if necessary for altitude.
3. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufacturers
method or in accordance with the "A.S.H.R.A.E. GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the
AIR CONDITIONING CONTRACTORS OF AMERICA. The total heat loss calculated should be equal to or less than
the heating capacity. Output based on D.O.E. test procedures, steady state efficiency times output.
4. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
13
BLOWER PERFORMANCE SPECIFICATIONS
GUCA***BX** Blower Performance
(CFM & Temperature Rise vs. External Static Pressure)
(
External Static Pressure (Inches Water Column)
Tons AC
Model
)
Heating Speed
As Shipped
Motor
Speed
at 0.5"
ESP
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
HIGH
3.0
1322
---
1298
---
1278
---
1243
---
1196
---
1137 1074 1000
GUCA045BX30
MED
2.5
1131
35
1114
35
1097
36
1068
37
1019
39
968
907
827
(MED-LO)
MED-LO
2.0
903
44
896
44
876
45
844
47
807
49
764
706
652
LOW
1.5
702
56
680
58
657
60
624
63
584
---
542
485
423
HIGH
3.5
1621
37
1572
39
1521
40
1469
41
1407
43
1343 1276 1205
GUCA070BX30
MED
3.0
1402
43
1366
44
1329
46
1290
47
1243
49
1185 1133 1060
(MED-LO)
MED-LO
2.5
1144
53
1122
54
1086
56
1063
57
1024
59
981
940
875
LOW
2.0
868
---
831
---
805
---
782
---
745
---
703
667
619
HIGH
4.0
1861
---
1823
---
1778
---
1721
---
1643
36
1581 1500 1387
GUCA70BX40
MED
3.5
1620
37
1597
37
1565
38
1516
39
1462
41
1410 1318 1235
(MED-LO)
MED-LO
3.0
1387
43
1369
43
1313
45
1284
46
1224
48
1167 1095 1024
LOW
2.5
1193
50
1162
51
1118
53
1072
55
1012
59
961
HIGH
4.0
1821
43
1768
45
1699
46
1624
49
1544
51
1439 1354 1227
GUCA090BX40
MED
3.5
1624
49
1561
51
1520
52
1461
54
1381
57
1297 1217 1109
(HIGH)
MED-LO
3.0
1395
57
1363
58
1311
60
1258
63
1201
66
1120 1045 957
LOW
2.5
1212
65
1164
---
1126
---
1080
---
1014
---
957
HIGH
5.0
2090
38
2076
38
2061
38
2054
39
2017
39
1963 1901 1820
GUCA090BX50
MED
4.0
1615
49
1610
49
1600
49
1591
50
1562
51
1523 1473 1410
(MED)
MED-LO
3.5
1367
58
1367
58
1356
58
1351
59
1345
59
1298 1251 1177
LOW
3.0
1191
---
1182
---
1166
---
1141
---
1115
---
1061 1014 965
HIGH
5.0
2181
46
2117
48
2073
49
2021
50
1976
51
1913 1831 1746
GUCA115BX50
MED
4.0
1693
60
1666
61
1647
61
1600
63
1562
65
1522 1471 1408
(HIGH)
MED-LO
3.5
1489
---
1454
---
1428
---
1397
---
1365
---
1328 1270 1214
LOW
3.0
1299
---
1275
---
1250
---
1224
---
1188
---
1161 1105 1059
894
882
836
815
1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the
furnace requires two return filters, this chart assumes both filters are installed.
2. All furnaces ship as high speed cooling. Installer must adjust blower cooling speed as needed.
3. For most jobs, about 400 CFM per ton when cooling is desirable.
4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON
THE RATING PLATE.
5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown
on rating plate. The shaded area indicates ranges in excess of maximum external static pressure allowed when
heating. The data for 0.6" w.c. to 0.8" w.c. is shown for air conditioning purposes only.
6
The dashed (---) areas indicate a temperature rise not recommended for this model.
7. The above chart is for U.S. furnaces installed at 0-4000 feet. At higher altitudes, a properly derated unit will have
approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.
14
BLOWER PERFORMANCE SPECIFICATIONS
GCCA***BX** Blower Performance
(CFM & Temperature Rise vs. External Static Pressure)
(
External Static Pressure (Inches Water Column)
Tons AC
Model
)
Heating Speed
As Shipped
Motor
Speed
at 0.5"
ESP
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
HIGH
3.0
1327
---
1342
---
1305
---
1251
---
1195
---
1128 1056 969
GCCA045BX30
MED
2.5
1195
---
1179
---
1136
35
1092
36
1037
38
988
918
839
(MED-LO)
MED-LO
2.0
979
40
949
42
906
43
862
46
816
48
791
736
668
LOW
1.5
764
52
736
54
703
56
668
59
621
63
589
537
477
HIGH
3.5
1551
69
1499
40
1445
42
1390
44
1324
46
1256 1183 1105
GCCA070BX30
MED
3.0
1383
44
1347
45
1287
47
1240
49
1191
51
1123 1069 1002
(MED)
MED-LO
2.5
1176
52
1139
53
1104
55
1057
57
1016
60
960
908
846
LOW
2.0
928
65
891
---
867
---
824
---
794
---
747
701
651
HIGH
4.0
1911
---
1838
---
1762
---
1674
35
1590
37
1501 1407 1294
GCCA70BX40
MED
3.5
1674
35
1609
37
1551
38
1481
40
1407
42
1329 1234 1157
(MED-LO)
MED-LO
3.0
1481
40
1407
42
1352
44
1329
44
1234
48
1157 1076 972
LOW
2.5
1282
46
1234
48
1183
50
1117
53
1047
56
HIGH
4.0
1867
42
1797
44
1730
46
1660
47
1581
50
1498 1403 1316
GCCA090BX40
MED
3.5
1654
48
1594
49
1531
51
1485
53
1403
56
1263 1239 1157
(HIGH)
MED-LO
3.0
1452
54
1407
56
1353
58
1295
61
1225
64
1156 1083 1005
LOW
2.5
1255
63
1206
65
1165
68
1115
---
1056
---
997
HIGH
5.0
2153
37
2096
38
2030
39
1969
40
1891
42
1809 1714 1605
GCCA090BX50
MED
4.5
1775
45
1740
45
1696
47
1651
48
1595
50
1527 1446 1359
(MED-LO)
MED-LO
3.5
1537
52
1487
53
1456
54
1414
56
1370
58
1325 1255 1180
LOW
3.0
1288
61
1273
62
1250
63
1210
65
1169
---
1126 1073 998
HIGH
5.0
2130
47
2079
49
1982
51
1936
52
1849
55
1756 1677 1574
GCCA115BX50
MED
4.5
1815
56
1766
57
1716
59
1651
61
1604
63
1517 1451 1361
(MED)
MED-LO
3.5
1616
63
1573
64
1536
66
1484
68
1431
---
1375 1310 1233
LOW
3.0
1424
---
1382
73
1361
---
1310
---
1256
---
1200 1134 1072
987
906
931
818
849
1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer. If the
furnace requires two return filters, this chart assumes both filters are installed.
2. All furnaces ship as high speed cooling. Installer must adjust blower cooling speed as needed.
3. For most jobs, about 400 CFM per ton when cooling is desirable.
4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON
THE RATING PLATE.
5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown
on rating plate. The shaded area indicates ranges in excess of maximum external static pressure allowed when
heating. The data for 0.6" w.c. to 0.8" w.c. is shown for air conditioning purposes only.
6
The dashed (---) areas indicate a temperature rise not recommended for this model.
7. The above chart is for U.S. furnaces installed at 0-4000 feet. At higher altitudes, a properly derated unit will have
approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.
15
BLOWER PERFORMANCE SPECIFICATIONS
16
BTU OUTPUT vs TEMPERATURE RISE CHART
100
600 CFM
90
700
80
800
TEMPERATURE RISE
900
1000
70
1100
1200
60
1400
1600
50
1800
2000
2200
2400 CFM
40
30
FORMULAS
BTU OUTPUT = CFM x 1.08 x RISE
BTU OUTPUT
RISE =
÷ CFM
1.08
20
10
30
40
50
60
70
80
90
100
OUTPUT BTU/HR x 1000
110
120
130
140
150
HOT
SURFACE
IGNITER
PK-17
FRONT
COVER
PRESSURE
SWITCH
BU-27
C
NO
VT-28
LINE- H
RD-11
GY-12
GY-34
GAS VALVE
BK
-3
WH-7
M1
P3
C2
BR-13
VT
-28
WH-7
OR
-22
C
PRESSURE
SWITCH
NO
GND
YL-20
5 CIRCUIT
CONNECTOR
GN
BK
-1
WH
-5
HE
AT
DISCONNECT
L
L
GND
JUNCTIONBOX
ELE CTRONIC
AIR CLEA NER
CIRCULATOR
BLOWER
COOL-H
O
CO
ID
BLWR
HUMIDIFIER
N
L
N
GND
HUM-N
CIR-N
EAC-N
LINE-N
DISCONNECT
TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
JUNCTION
BOX
WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
LINE-H
EAC-H
IND
HUM-H
INTEGRATED CONTROL MODULE
HOT SURFACE
IGNITER
XFMR-N
AUTO RESET
PRIMARY
LIMIT
CONTROL
40 VA
TRA NS FORME R
YL-20
*
C
XFMR-H
BR-13
GY-12
OR-22
BK-4
BK-1
P3
M1
ID. BLOWER
PRESSURE
SWITCH
GAS
VA LVE
MANUAL RESET
AUXILIARY
LIMIT CONTROL
C
C2
NO
MANUAL RESET ROLLOUT
LIMIT CONTROL(S)
(SINGLE CONTROL ON 45 KBTU)
115 VAC
FLAME SENSOR
MV (12)
NO
GND
24V THE RMOSTAT CONNECTIONS
OVERCURRENT
PROT. DEVICE
SWITCH (PRESS.)
IGNITER
SWITCH (TEMP.)
FIELD SPLICE
FIELD GND
EQUIPMENT GND
FRONT COVER
PRES SURE SWITCH
PS (10)
HLI (7)
HLO (1)
RO2 (11)
RO1 (5)
IGN
FP (2)
XFMR-H
TH (3)
FUSE 3 A
TO
MICRO
HEAT-H
BLOWER
COMPARTMENT
DOOR
SWITCH
WARNING:
DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE
PROPERLY
POLARIZED
R
W
Y
G
C
MVC (9)
GND (8)
TR (6)
INTEGRATED CONTROL MODULE
JUNCTION
HI VOLTAGE FIELD
HI VOLTAGE (115V)
LOW VOLTAGE FIELD
LOW VOLTAGE (24V)
BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OP EN)
INTEGRATED CONTROL MODULE
*
3 FLASHES = PRESSURE SWITCH STUCK OPEN
WH-33
GN
OR-10
BU-14
PK-30
GY-8
BR-13
GY-12
OR-15
BU-27
LINE-N
WH-5
CIRC-N
WH
33
PK
-30
MANUAL
RESET
AUXILIARY
LIMIT
GY-8
RD
-2
XFMR-N
RD-11
YL-20
6
9
3
12
5
8
2
11
4
24VA C
3A
FUSE
1
7
WH-32
10
OR-22
OR-10
4
3
2
1
AUTO RESET PRIMARY
LIMIT CONTROL
BK-31
115 VAC NEU TRAL
TER MINALS
*
C
40 VA
TRANSFORMER
GY-8
3
4 FLASHES = OPEN PRIMARY OR AUXILIARY LIMIT
TERMINAL
PLUG CONNECTION
INTERNAL TO
INTEGRATED CONTROL
TO 115VAC/ 1Ø /60 HZ
POWER SUPPLY WITH
OVERCURRENT PROTECTION
DEVICE
WH
BK
CAPACITOR
CIRCULATOR
BLOWER
RD (LOW)
OR (ME D LOW)
BU (MED)
BK (HI)
SEE
NOTE 4
HEAT-H
180
120
PIN JUMPER
60
90
G
DIAGNOSTIC
LED
R
115 VAC
BK-4
OR-15
MANUAL RE SET ROLLOUT LIMIT CONTROL(S)
( SINGLE CONTROL ON 45 KBTU )
WH-33
NO
2 CIRCUIT
CONNECTOR
C
BR
WH
BU
-14
WIRING DIAGRAMS
RD
-2
INDUCED
DRAFT
BLOWER
GND
BURNER COMPARTMENT
BR
BLOWER COMPARTMENT
GND
CO OL-H
INTEGRATED
CONTROL
MODULE
115 VAC HOT AND PARK TERMINALS
OR
BLOWER HEAT
OFF DELAY SELECTOR
(SECONDS)
60
DIP SWITCHES
90
180
120
ON
ON
ON
OFF
OFF
ON
OFF
OFF
W
AS SHIPPED FROM FACTORY
Y
24V THERMOSTAT
CONNECTIONS
24 VAC
OR-10
STEADY ON = REPLACE CONTROL
1 FLASH =
0
1
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
4
6 FLASHES = 115V AC POWER REVERSED OR POOR UNIT GROUND
5 FLASHES = OPEN ROLLOUT LIMIT
SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
2
5
BU-27
OR-15
RD-11
PK -30
BU-14
GN
PK PINK
BR BROWN
WH WHITE
BU BLUE
GY GRAY
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
RATING OF AT LEAST 105°C. USE COPPER CONDUCTORS ONLY.
4. IF HEATING AND COOLING BLOWER SPEEDS ARE NOT THE SAME DISCARD JUMPER
BEFORE CONNECTING BLOWER LEADS. UNUSED BLOWER LEADS MUST BE PLACED ON
"PARK" TERMINALS OF INTEGRATED CONTROL OR TAPED.
5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
CONTINUOUS FLASHES = UNANTICIPATED FLAME PRESENT
7 FLASHES = LOW FLAME SENSE SIGNAL
6
7
C
COLOR CODES:
RD RED
YL YELLOW
VT VIOLET
GN GREEN
OR ORANGE
BK BLACK
20368301 REV. 00
GUCA***BX** (Manufacturing Numbers P1241601-06F)
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
17
! WARNING
W
24V THERMOSTAT
CONNECTIONS
Y
ON
ON
ON
OFF
OFF
ON
OFF
OFF
60
90
120
180
*
*
24 VAC
G
C
115 VAC
60
90
BK-31
120
PIN JUMPER
180
*
DIP SWITCHES
XFMR-H
OR-10
GY-8
40 VA
TRANSFORMER
24VAC
3A
5
2
6
3
GY-8
OR-10
FUSE
1
VT
-28
WH
33
CIRC-N
WH-5
LINE-N
BU-27
OR-15
GN
PK-30
4
BR-13
BK-4
PK
-30
GY-12
9
12
8
11
YL-20
GY-8
RD-11
1
2
3
4
XFMR-N
OR-10
OR-22
10
7
WH-32
LINE-H
RD
-2
BK
-3
PK-30
WH-7
BU-27
VT-28
BU-14
BLOWER
COMPARTMENT
DOOR SWITCH
(OPEN WHEN
DOOR OPEN)
BU-14
BU
-14
BK-4
OR-22
TO
MICRO
TR (6)
GND (8)
MVC (9)
MV (12)
PS (10)
HLI (7)
HLO (1)
RO2 (11)
RO1 (5)
ID
BLWR
CIRCULATOR
BLWR
GND
C
M1
P3
C2
GND
C
GAS
VALVE
ID BLOWER
PRESSURE
SWITCH
NO
DISCONNECT
LINE-N
EAC-N
CIR-N
HUM-N
XFMR-N
40 VA
TRANSFORMER
N
N
L
GND
OR-15
GY-12
BR-13
BK-1
OVERCURRENT
PROT. DEVICE
SWITCH (PRESS.)
IGNITER
SWITCH (TEMP.)
FIELD SPLICE
FIELD GND
EQUIPMENT GND
DISCONNECT
WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
INTEGRATED CONTROL MODULE
L
JUNCTION BOX
ELECTRONIC
AIR CLEANER
HEAT-H
AT
HE
CO
OL
COOL-H
HUMIDIFIER
HOT SURFACE
IGNITER
FLAME SENSOR
115 VAC
MANUAL RESET ROLLOUT
LIMIT CONTROL(S)
(SINGLE CONTROL ON 45K BTU)
24 VAC
MANUAL RESET AUXILIARY AUTO RESET
LIMIT CONTROLS
PRIMARY
LIMIT
CONTROL
FRONT COVER
PRESSURE SWITCH
NO
INTEGRATED CONTROL MODULE
C
G
Y
W
R
FUSE 3 A
TH (3)
XFMR-H
FP (2)
IGN
HUM-H
IND
EAC-H
DOOR
SWITCH
LINE-H
BK
-1
WH
-5
JUCTION
BOX
TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
WARNING:
DISCONNECT POWER
BEFORE SERVICING.
WIRING TO UNIT
MUST BE
PROPERLY
POLARIZED
AND GROUNDED.
INTEGRATED CONTROL MODULE
GY-12
FRONT COVER
PRESSURE SWITCH
RD-11
NO
GN
FLAME SENSOR
PLUG CONNECTION
INTERNAL TO
INTEGRATED CONTROL
TERMINAL
JUNCTION
HI VOLTAGE FIELD
HI VOLTAGE (115V)
LOW VOLTAGE FIELD
LOW VOLTAGE (24V)
GN
RD-11
WH-33
C
GND
YL-20
YL-34
MANUAL
RESET
AUXILIARY
LIMITS
WH-7
VT-28
WH-33
BU-27
OR-15
PK
-17
9 CIRCUIT
CONNECTOR
BK
WH
INDUCED DRAFT
BLOWER
BR-13
GY-34
MANUAL RESET ROLLOUT LIMIT CONTROL(S)
( SINGLE CONTROL ON 45K BTU )
YL-20
AUTO RESET
PRIMARY LIMIT
CONTROL
C
115 VAC NEUTRAL
TERMINALS
NO
M1
P3
C2
GAS VALVE
24V THERMOSTAT CONNECTIONS
HEAT-H
SEE
NOTE 4
BK (HI)
BU (MED)
OR (MED LOW)
RD (LOW)
CIRCULATOR
BLOWER
CAPACITOR
WH
COOL-H
115 VAC HOT AND PARK TERMINALS
INTEGRATED
CONTROL
MODULE
BLOWER HEAT
OFF DELAY SELECTOR
(SECONDS)
GND
BR
GND
OR
-22
WH
-33
ID BLOWER
PRESSURE
SWITCH
2 CIRCUIT
CONNECTOR
HOT
SURFACE
IGNITER
7 7 FLASHES = LOW FLAME SENSE SIGNAL
8 8 FLASHES
PRESSURE
=
SWITCH OPEN 5 TIMES DURING HEAT CYCLE
FLASHES
PRIMARY
=
LIMIT OPEN 5 TIMES DURING HEAT CYCLE
FLASHES = UNANTICIPATED FLAME PRESENT
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
RATING OF AT LEAST 105°C. USE COPPER CONDUCTORS ONLY.
4. IF HEATING AND COOLING BLOWER SPEEDS ARE NOT THE SAME DISCARD JUMPER
BEFORE CONNECTING BLOWER LEADS. UNUSED BLOWER LEADS MUST BE PLACED ON
"PARK" TERMINALS OF INTEGRATED CONTROL OR TAPED.
5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
TO 115 VAC/ 1Ø / 60 HZ
POWER SUPPLY WITH
OVERCURRENT PROTECTION
DEVICE
GCCA***AX** (Manufacturing Numbers P1241701-06F)
PK PINK
BR BROWN
WH WHITE
BU BLUE
GY GRAY
RD RED
20368401 REV.00
COLOR CODES:
YL YELLOW
OR ORANGE
VT VIOLET
GN GREEN
BK BLACK
CCONTINUOUS
99
0 STEADY ON = REPLACE CONTROL
1 1 FLASH =
SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
2 2 FLASHES = PRESSURE SWITCH STUCK CLOSED
3 3 FLASHES = PRESSURE SWITCH STUCK OPEN
4 4 FLASHES = OPEN PRIMARY OR AUXILIARY LIMIT
5 5 FLASHES = OPEN ROLLOUT LIMIT
FLASHES
= AC POWER REVERSED OR POOR UNIT GROUND
115V
66
RD
-2
BURNER COMPARTMENT
BLOWER COMPARTMENT
BR
OR
AS SHIPPED FROM FACTORY
DIAGNOSTIC
LED
R
WIRING DIAGRAMS
18
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
! WARNING
ELECTRONIC
AIR CLEANER
TYPICAL SCHEMATIC
GUCA***BX** OR GCCA***BX** MODEL FURNACES
WHITE-RODGERS 50A65-288 INTEGRATED IGNITION CONTROL
This schematic is for reference only. Not all wiring is as shown above,
refer to the appropriate wiring diagram for the unit being serviced.
CIR
PARK PARK NEU
HEAT COOL
INDUCER
EAU
NEU
EAC
SCHEMATICS
CIRCULATOR
BLOWER
HUMIDIFIER
IND
IND
HUM
NEU
R
K2
K3
FUSE
RO2
RO1
ROLLOUT
SWITCH
TH
K1
XFMR
HOT
LINE HOT
24 VAC
120 VAC
XFMR
NEU
.0005
LINE NEU
FACTORY
JUMPER
3M
TR
C
K8
K5
FACTORY
JUMPER
FP
IGN
GND
MV
FLAME
SENSOR
PROBE
IGNITOR
GAS
VALVE
MV
PS
G
W
HLO
HIGH
LIMIT
PRESSURE
SWITCH
19
! WARNING
Y
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
HLI
AUX
LIMIT
COMPRESSOR
CONTACTOR
COIL
R
Y
G
W
THERMOSTAT