Crown CSHB60, CSHB90XE User Manual

ECM OPERATION MANUAL

Model:

CSHB60-90XE

c WARNING:

• Do NOT store or use gasoline or other flammable vapors and liquids
in the vicinity of this or any other appliance.

• Improper installation, adjustment, alteration, service, or
maintenance can cause a fire or explosion resulting in property
damage, personal injury, or loss of life. For assistance or additional
information consult a qualified installer or service agency.

These instructions should be:

• read prior to installing the furnace

• retained for reference by qualified service personnel

• reviewed before performing any service or maintenance

Crown Boiler Company

3633 “I” Street

Philadelphia, Pennsylvania 19134

MO-453
ECN 4809-MA MADE IN USA

All installations and services must be performed by qualified service personnel.

INDEX

SECTION

I. BLOWER CONTROLLER INFORMATION 1
A. TERMINAL DEFINITIONS & FIELD WIRING 1

II. ECM TROUBLESHOOTING 7
A. DIAGNOSTIC FEATURES 7

C. TROUBLESHOOTING CHARTS 10

BEGINNING PAGE

B. WIRING & SWITCHES 2
C. INPUTS 3
D. OUTPUTS 4
E. OPERATING MODES 4
F. CFM TABLES 6

B. GENERAL GUIDELINES TO TROUBLESHOOTING GE ECM 7

i

All installations and services must be performed by qualified service personnel.

I. BLOWER CONTROLLER INFORMATION

A. TERMINAL DEFINITIONS & FIELD WIRING

Burner Harness Connector P1

Pin 1 – Limit switch connection.
Pin 2 – 120 VAC Line connection.
Pin 3 – Burner pilot contact.
Pin 4&5 – 120 VAC Neutral connection.
Pin 6 – Burner pilot contact.
Pin 7&8 – From oil primary control.
Pin 9 – Limit Switch Input (LSI).

Field Wiring to Burner
Pilot (Tstat) Neutral Line

Harness Wires
Beckett Connections
Riello Connections
Carlin Connections

Yellow Wires
T-T terminals

T-stat terminals
T-T terminals

White Red

White Black
White Black

White Black

Thermostat/Humidistat connections

"C" Common/ground
"W" Thermostat call for heat
"R" 24 VAC to thermostat
"G" Thermostat call for fan
"Y" Thermostat call for cool
“DEHUM” Humidistat call for dehumidification

ECM control outputs

Pin 1 - Speed Common Pin 4 – Blower Enable
Pin 2 - Speed Output Pin 5 – COOL Enable
Pin 3 - Not used. Pin 6 – “R” Output

Male quick connect terminals.

"S1-3” 120 VAC Hot

“N1-7” 120 VAC Neutral
“EAC” Electronic Air Cleaner (120 VAC) connection.
“HUM” Humidifier connection (120 VAC).
"FAN" Fan On Signal
“X” 24VAC from transformer.
“C” 24VAC common from transformer.
"CC" Compressor Contactor
"CC_COM" Compressor Contactor Common

1

All installations and services must be performed by qualified service personnel.

B. WIRING & SWITCHES

: TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower

wiring.

Figure 2: BOARD LAYOUT WITH SWITCHES

2

All installations and services must be performed by qualified service personnel.

C. Inputs

Power supplies

Line voltage is applied between the "S1" and "N1" quick connect terminals.
24 VAC Class II Transformer secondary voltage supplied to X and C

Limit Switch

The 120VAC limit switch is connected to pins P2-1 & 9. Refer to the Heat Mode section for the control
operation.

Thermostat call for heat "W"

24 VAC thermostat input. A call for heat is recognized when the thermostat connects "W" to "R". This
input has an indicator LED that will light when the control receives a call for heat. Refer to the Heat Mode
section for the control operation.

Thermostat call for cool, "Y"

24 VAC thermostat input. A call for cooling is recognized when the thermostat connects "Y" to "R. This
input has an indicator LED that will light when the control receives a call for cooling. . Refer to the Cool
Mode section for the control operation.

Thermostat call for dehumidification "DEHUM”

24 VAC thermostat input. A call for dehumidification is recognized when the humidistat connects
"DEHUM" to "R". This input has an indicator Led that will light when the control receives a call for
dehumidification. Refer to the Cool Mode section for the control operation.

Thermostat call for fan "G"

24 VAC thermostat input. A call for fan is recognized when the thermostat connects "G" to "R". This
input has an indicator LED in that will light when the control receives a call for fan. Refer to the Fan Mode
section for the control operation.

D. Outputs

ECM Control

The control controls a multiple speed ECM motor through the 6-pin P3 connector. This connector
provides connection for ECM Speed common (Pin 1), Speed output (Pin 2), Blower Enable (Pin 4), Cool
Enable (Pin 5) and “R” output (Pin 6).

Oil Burner

Control

The control provides dedicated contacts to operate the T-T input of an oil primary control. Rating
shall be class 2 - 24 VAC pilot duty @ 24 VAC (< 200mA).

Power

The switched 120VAC power from the LIMIT switch passes through the board between Pins 1&2
of connector P2.

Compressor contactor

The control provides switched 24VAC to operate a compressor contactor. Rating shall be class 2 - 24
VAC pilot duty @ 24 VAC (< 200mA).

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