Thermo Pride OH5-85DE User Manual

ECM OPERATION MANUAL

FOR USE WITH MODELS:

OH5-85DE OL5-85FDE OL5-85RDE

OH11-105DE OL11-105FDE OL11-105RDE

OH2-56DE OL2-56FDE OL2-56RDE

OC5-85DE OC2-56DE OH5-85DXE

: IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW AND IN THIS MANUAL, A
FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF
LIFE.

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF
THIS OR ANY OTHER APPLIANCE.

INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER, SERVICE AGENCY
OR THE GAS SUPPLIER. (REFERRED TO IN THESE INSTRUCTIONS AS A QUALIFIED HEATING
CONTRACTOR).

PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITIAL FIRING, AND BEFORE
PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT WITH THE
HOMEOWNER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED SERVICE
PERSONNEL.

THERMO PRODUCTS, LLC.

BOX 217
NORTH JUDSON, IN 46366
PHONE: [phone]

MADE IN USA

MO-434

ECN 4853-MA 082506

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

INDEX

SECTION BEGINNING PAGE

I. FURNACE SPECIFICATIONS (SHIPPED SETTINGS) 1

II. BLOWER CONTROL INFORMATION 4
A. TERMINAL DEFINITIONS & FIELD WIRING 4

B. WIRING & SWITCHES 5
C. INPUTS 9
D. OUTPUTS 9
E. OPERATING MODES 10
F. CFM TABLES 12
G. ECM SPECIFIC REPLACEMENT PARTS 13

III. ECM TROUBLESHOOTING 13
A. DIAGNOSTIC FEATURES 13

B. GENERAL GUIDELINES TO TROUBLESHOOTING GE ECM 14

C. TROUBLESHOOTING CHARTS 17

i

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

I. FURNACE SPECIFICATIONS (SHIPPED SETTINGS)

OL SERIES

MODEL NO. OL2-56 OL5-85 OL11-105
HEAT INPUT RATE IN BTU/HR

70,000 106,250 126,000

HEATING CAPACITY IN BTU/HR

HEIGHT OF CASING
WIDTH OF CASING
DEPTH OF CASING
WARM AIR OUTLET
RETURN AIR INLET

DIA. OF FLUE OUTLET
FLOOR-CENTER OF FLUE

FLOWRATE from .2” & .5” w.c.
EXTERNAL STATIC PRESSURE
@2 TON SWITCH SELECTION (CFM)
@2-1/2 TON SWITCH SELECTION (CFM)
@3 SWITCH SELECTION (CFM)
@3-1/2 TON SWITCH SELECTION (CFM)

@70deg SWITCH SELECTION (CFM)

APPROX TEMPERATURE RISE (°F)
BLOWER MOTOR HP
NOZZLE SIZE
NOZZLE SPRAY ANGLE PATTERN
LARGEST RECOMMENDED
AIR CONDITIONER
SIZE OF FILTERS

56,000 85,000 101,000

34-3/4” 43-1/4” 46-1/2”

19” 25” 25”

48” 50-1/4” 54-1/2”
17 x 17 20 x 20 20 x 20
17 x 17 20 x 14 20 x 16

5” 6” 6”

29-1/4” 36” 38-1/2”

COOLING COOLING COOLING

800 800 800

1000 1000 1000
1200 1200 1200
1400 1400 1400

HEATING HEATING HEATING

737 1134 1335

70 70 70
1/2 1/2 1/2
.55 .75 .90

80º Hollow 80º Hollow 80º Hollow

3.5 Ton 3.5 Ton 3.5 Ton

16” x 20” 20” x 20” 20” x 25”

NOTES:

1. Heating capacity based on annual fuel utilization efficiency rated by manufacturer.

2. On all outlet and inlet dimensions, the first dimension is width.

3. To permit largest recommended air conditioning (at .5 static pressure), selection of the highest motor speed is
required.

4. Electrical characteristics at 115 volts, 60 Hz., 1 phase (less than 15 amps, for all models).

5. All specifications are subject to change without notice.

1

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

OH SERIES

MODEL NO. OH2 OH5-85 OH11-105 OH5-85DXE
HEAT INPUT RATE IN BTU/HR

HEATING CAPACITY IN BTU/HR

HEIGHT OF CASING
WIDTH OF CASING
DEPTH OF CASING
WARM AIR OUTLET
RETURN AIR INLET

DIA. OF FLUE OUTLET
FLOOR-CENTER OF FLUE

FLOWRATE from .2” & .5” w.c.
EXTERNAL STATIC PRESSURE
@2 TON SWITCH SELECTION (CFM)
@2-1/2 TON SWITCH SELECTION (CFM)
@3 SWITCH SELECTION (CFM)
@3-1/2 TON SWITCH SELECTION (CFM)
4 TON

70,000 106,250 126,000

56,000 85,000 101,000

52” 56” 59-1/2” 56”
19” 24” 24” 24”

27” 33” 34” 33”
17 x 17 22 x 20 22 x 20 22 x 20
18 x 14 23 x 14 25 x 16 25 x 16

5” 6” 6” 6”

TOP TOP TOP TOP

COOLING COOLING COOLING COOLING

800 800 800 726

1000 1000 1000 924
1200 1200 1200 1276
1400 1400 1400 1474

1600

HEATING HEATING HEATING HEATING

85,000
106,250
74,000
85,000

905

@70deg SWITCH SELECTION (CFM)

APPROX TEMPERATURE RISE (°F)

737 1134 1335

70 70 70 72

1121

70

BLOWER MOTOR HP
NOZZLE SIZE
NOZZLE SPRAY ANGLE PATTERN
LARGEST RECOMMENDED
AIR CONDITIONER
SIZE OF FILTERS

1/2 1/2 1/2 3/4

.55 .75 .90 .70

80º Hollow 80º Hollow 80º Hollow 45º W

3.5 Ton 3.5 Ton 3.5 Ton 4 Ton

20” x 16” 25” x 16” 25” x 16” 20” x 25”

NOTES:

1. Heating capacity based on annual fuel utilization efficiency rated by manufacturer.

2. On all outlet and inlet dimensions, the first dimension is width.

3. To permit largest recommended air conditioning (at .5 static pressure), selection of the highest motor speed is
required.

6. Electrical characteristics at 115 volts, 60 Hz., 1 phase (less than 15 amps, for all models).

2

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

OC SERIES

MODEL NO. OC2-56 OC5-85
HEAT INPUT RATE IN BTU/HR

70,000 106,250

HEATING CAPACITY IN BTU/HR

HEIGHT OF CASING
WIDTH OF CASING
DEPTH OF CASING
WARM AIR OUTLET
RETURN AIR INLET

DIA. OF FLUE OUTLET
FLOOR-CENTER OF FLUE

FLOWRATE from .2” & .5” w.c.
EXTERNAL STATIC PRESSURE
@2 TON SWITCH SELECTION (CFM)
@2-1/2 TON SWITCH SELECTION (CFM)
@3 SWITCH SELECTION (CFM)
@3-1/2 TON SWITCH SELECTION (CFM)

@70deg SWITCH SELECTION (CFM)

APPROX TEMPERATURE RISE (°F)
BLOWER MOTOR HP
NOZZLE SIZE
NOZZLE SPRAY ANGLE PATTERN
LARGEST RECOMMENDED
AIR CONDITIONER
SIZE OF FILTERS

56,000 85,000

57-1/2” 56”
19” 24”
27” 33”
17 x 17 16 x 20
17 x 17 22 x 20

5” 6”
TOP TOP

COOLING COOLING
800 800

1000 1000
1200 1200
1400 1400

HEATING HEATING
737 1134

70 70
1/2 1/2
.55 .75
80º Hollow 80º Hollow

3.5 Ton 3.5 Ton
17” x 10” 20” x 12”

NOTES:

1. Heating capacity based on annual fuel utilization efficiency rated by manufacturer.

2. On all outlet and inlet dimensions, the first dimension is width.

3. To permit largest recommended air conditioning (at .5 static pressure), selection of the highest motor speed is
required.

7. Electrical characteristics at 115 volts, 60 Hz., 1 phase (less than 15 amps, for all models).

8. All specifications are subject to change without notice.

3

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

II. 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

Yellow Wires
T-T terminals
T-stat terminals

White Red
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 (TXV systems ONLY)

Thermostat/Humidistat connections for 2-Stage control

"C" Common/ground
"W1" T-Stat call for heat (low fire)
"W2" T-Stat call for heat (high fire)
"R" 24 vac to T-Stat
"G" T-Stat call for fan
"Y" T-Stat call for cool
“DEHUM” Humidistat call for dehumidification (TXV systems ONLY)

ECM control outputs

Pin 1 - Speed Common Pin 4 – Blower Enable
Pin 2 - Speed Output Pin 5 – COOL Enable
Pin 3 – Motor CFM 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

4

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

B. WIRING & SWITCHES

HIGHBOY/LOWBOY

Figure 1: BLOWER WIRING

5