Goodman Mfg service manual Wiring Diagrams, GCH9*****XAA,AB

Page 15

WIRING DIAGRAMS

GCH9*****X[AA,AB]

 

 

 

24 VAC

 

OR

 

 

BLOWER

 

 

 

 

 

 

COMPARTMENT

 

 

 

HUMIDIFIER

 

 

 

GY

 

 

 

 

 

 

DOOR SWITCH

 

 

 

 

 

 

 

 

 

 

24 VAC

 

 

 

 

(OPEN WHEN

 

 

 

 

 

 

 

DOOR OPEN)

24V THERMOSTAT

 

115 VAC

 

 

 

 

 

 

 

 

 

 

 

 

CONNECTIONS

 

 

 

 

 

 

 

 

C

G

R

W Y

 

WH

 

 

 

 

 

 

 

BK

 

 

BK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BK

 

 

 

FUSE

 

 

 

 

OR

 

 

 

 

 

 

 

GY

 

 

 

 

 

 

 

 

 

 

 

 

 

3

2

1

PK

 

 

 

 

HUMIDIFIER

 

INTEGRATED

 

 

 

 

 

 

 

CONTROL MODULE

 

 

 

TR (6)

 

 

 

 

 

 

 

GND (8)

 

GND

 

 

 

 

 

 

 

C

 

 

 

MVC (9)

 

 

 

 

 

 

 

 

 

GAS

 

 

 

MVH (12)

 

 

HI VALVE

 

 

 

 

 

PM

 

 

 

MVL(2)

 

 

C

 

C

 

NO

 

ID BLOWER

 

 

 

 

 

 

 

 

FRONT COVER

 

 

 

 

 

 

 

PRESSURE

24V

 

 

PRESSURE SWITCH

 

SWITCH

G

 

PS (10)

 

 

C

NO

THERMOSTAT

Y

TO

PSO (4)

 

 

 

 

 

MICRO

HLI (7)

 

 

 

 

 

 

 

 

 

 

W

 

HLO (1)

 

 

 

 

 

 

 

 

 

 

INTEGRATED

CONTROL

MODULE

ON OFF

2ND

STAGE DELAY* MODE *

HEAT

OFF DELAY * FACTORY SETTINGS SHOWN

6 9 12

GY

OR

FS

5

4

 

OR

8

7

 

BL

 

 

 

GR

11

10

 

YL

 

OR

 

OR

 

 

 

RD

 

BR

 

 

 

GY

 

 

 

TERMINALS

115 VAC

WH

 

 

CONNECTIONS

R

RO2 (11)

 

 

RO1 (5)

 

 

 

TH (3)

24 VAC

 

 

40 VA

 

 

TRANSFORMER

 

XFMR-H

115 VAC

DIAGNOSTIC*

NOTE 6

XFMR

2

SEE

 

 

LED

 

-H

 

115 VAC HOT AND PARK TERMINALS

1

COOL-H

HEAT-H

 

 

 

SEE

LINE-H

 

GND

 

 

NOTE 4

 

 

 

NEUTRAL

WH

PK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BK

 

 

FLAME SENSOR

FS

HOT SURFACE

IGNITER

IGN

HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

 

WH

 

WH

 

OR GR RD

 

BK (HI)

 

YL

 

BL (MED)

RD

PK

 

 

 

 

 

 

 

 

OR (MED LOW)

 

 

 

 

 

RD (LOW)

 

BK

BL

GY OR

 

 

 

BR

 

 

 

BR

 

WH

OR

BR

 

 

YL

 

 

 

CAPACITOR

 

 

 

 

INTEGRATEDCONTROL MODULE

 

 

 

ID

LINE NEUTRALS

INTEGRATEDCONTROL MODULE

IND

 

 

BLWR

 

 

 

H

L

 

 

O

E

 

 

 

A

 

 

 

T-

 

 

 

H

COOL-H

 

CIRCULATOR

I

 

 

BLWR

H

 

 

 

 

 

 

 

BLOWER COMPARTMENT

PU

 

 

 

BURNER COMPARTMENT

MANUAL RESET

 

AUXILIARY LIMITS

 

 

 

 

 

 

GND

 

(1) IN UPFLOW

 

 

 

BLOWER DECK

 

 

 

 

 

 

BK

 

(2) IN C'FLOW

 

 

 

BLOWER HOUSING

 

 

W

 

WH

 

 

 

INDUCED DRAFT

 

 

 

 

BLOWER

WH

 

 

 

 

 

 

 

 

PU

 

 

 

 

BL

 

RD

OR

YL

OR

 

 

 

 

N

C

PK

RD

 

O

 

WH

 

 

 

 

 

ELECTRONIC

EAC-H

AIR CLEANER

 

LINE-H

 

 

JUNCTION BOX

DOOR

 

SWITCH

 

 

DISCONNECT

L

GND

N

TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH

OVERCURRENT PROTECTION DEVICE

ID BLOWER

 

 

 

 

 

 

 

BL

JUNCTION

 

PRESSURE

24 VAC

 

 

 

 

 

 

 

 

 

 

 

BOX

 

SWITCH

HUMIDIFIER

 

 

 

FRONT COVER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 CIRCUIT

PM

 

 

C

N

PRESSURE SWITCH

 

 

 

1

GY

O

 

GY

 

WH

N

CONNECTOR

 

 

 

 

 

GND

GR

 

 

GND

 

 

 

 

 

 

 

 

HOT

C

2

BR

 

 

 

 

 

BK

L

SURFACE

 

 

 

 

 

 

 

 

 

 

 

 

 

FLAME

 

IGNITER

HI

3

 

 

OR

 

 

 

 

GAS VALVE

 

 

 

SENSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

1 2 3 4 5 6 7 8 C

STEADY ON = NORMAL OPERATION

OFF

= CONTROL FAILURE

1 FLASH

=

2 FLASHES

= PRESSURE SWITCH STUCK CLOSED

3 FLASHES

= PRESSURE SWITCH STUCK OPEN

4 FLASHES = OPEN HIGH LIMIT

5 FLASHES = FLAME SENSE WITHOUT GAS VALVE

6 FLASHES =

7 FLASHES = LOW FLAME SIGNAL

8 FLASHES = CHECK IGNITER OR IMPROPER GROUNDING

CONTINUOUS/RAPID FLASHES = REVERSED 115 VAC POLARITY

LOW VOLTAGE (24V) LOW VOLTAGE FIELD HI VOLTAGE (115V) HI VOLTAGE FIELD JUNCTION TERMINAL

INTERNAL TO INTEGRATED CONTROL

PLUG CONNECTION

EQUIPMENT GND FIELD GND FIELD SPLICE SWITCH (TEMP.) IGNITER SWITCH (PRESS.)

OVERCURRENT PROT. DEVICE

COLOR CODES:

PK PINK

NOTES:

1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.

YL YELLOW

BR BROWN

2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.

OR ORANGE

WH WHITE

3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL

PU PURPLE

BL BLUE

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

GN GREEN

GY GRAY

BLOWER LEADS MUST BE PLACED ON "PARK" TERMINALS OF INTEGRATED CONTROL OR TAPED.

BK BLACK

RD RED

5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.

 

 

0140F00592 REV. A

6. TO RECALL THE LAST 5 FAULTS, MOST RECENT TO LEAST RECENT, DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN

STANDBY (NO THERMOSTAT INPUTS)

 

 

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

15

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Contents Technical Manual Product Identification 045These models are Low NOx General Operation Product DesignDownflow /Horizontal Component IdentificationGCH9*****XA Pressure Switch Trip Points and Usage Chart Model Rollout Limit Switches 1824 Thermostats Filters Dual $aver Model GCH9Blower Performance Blower Performance SpecificationsPerformance Specifications GCH9*****XAA,AB Wiring DiagramsGCH9*****XAC

GCH9 specifications

Goodman Manufacturing has established itself as a reliable name in the HVAC industry, and the GCH9 is a notable example of their commitment to creating energy-efficient and dependable heating solutions. This gas-fired, self-contained horizontal furnace is designed for residential applications, offering high efficiency and durability.

One of the main features of the Goodman GCH9 is its impressive Annual Fuel Utilization Efficiency (AFUE) rating. With a maximum AFUE of up to 92%, homeowners can enjoy reduced energy costs while ensuring their space remains comfortable and warm during the colder months. This high efficiency is achieved through advanced engineering and superior insulation, which minimizes heat loss.

The GCH9 utilizes a dual-stage gas valve and a variable-speed blower motor, contributing to its efficient operation. The dual-stage valve allows the furnace to modulate its output based on the heating demand, which means it can operate at a lower setting on milder days and ramp up when temperatures drop. This not only enhances comfort but also aids in reducing energy consumption. The variable-speed blower motor further optimizes airflow, improving the furnace's overall performance and allowing for quieter operation.

Another key characteristic of the Goodman GCH9 is its durable construction. The heat exchanger is crafted from aluminized steel, ensuring longevity and endurance against corrosion. Additionally, the furnace is equipped with a robust cabinet that provides both insulation and sound dampening, resulting in a quieter operation when compared to other models.

Installation of the Goodman GCH9 is streamlined thanks to its flexible design options. It can be installed in various configurations, making it suitable for diverse home layouts. Moreover, the GCH9 includes a multi-position design that facilitates downward, horizontal, or upflow configurations, allowing contractors to adapt to specific installation needs.

For homeowners seeking peace of mind, the Goodman GCH9 also comes with an excellent warranty. The limited lifetime warranty on the heat exchanger and a 10-year limited parts warranty further underscore Goodman Manufacturing's commitment to quality and customer satisfaction.

In summary, the Goodman GCH9 gas furnace stands out with its high AFUE rating, energy-efficient technologies, durable construction, and versatile installation options, making it a smart choice for modern homeowners looking to enhance their heating systems. With its combination of reliability and efficiency, the GCH9 is a testament to Goodman's dedication to quality and performance in home comfort solutions.
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