G-II PCM SERV ICE MANUAL
M50, M80/90 & M105/125
SERIAL NUMBERS G-I I PCM MODEL HEATERS : 705000 – TO DATE
AND ALL MODELS EQUIPPED WITH A G-II REPLACEM ENT PCM
Rev. C
CONTENTS
A. |
SAFETY ...................................................................................... |
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A-1 |
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SAFETY CONSIDERATIONS .............................................................. |
A-2 |
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B. |
INTRODUCTION ......................................................................... |
B-1 |
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C. PROHEAT CONTROL MODULE (PCM) TYPE............................ |
C-1 |
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D. |
COMPRESSOR TYPE ................................................................ |
D-1 |
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E. |
MODEL DESCRIPTIONS............................................................ |
E-1 |
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1.0 TECHNICAL SPECIFICATIONS.................................................. |
1-1 |
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1.1 |
PHYSICAL .............................................................................. |
1-2 |
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1.2 |
G-II PCM ELECTRICAL ............................................................. |
1-8 |
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1.3 |
TORQUE SPECIFICATIONS ....................................................... |
1-9 |
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2.0 PRINCIPLES OF OPERATION ................................................... |
2-1 |
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2.1 COMPONENT DESCRIPTION .................................................... |
2-1 |
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2.2 |
THEORY OF OPERATION .......................................................... |
2-4 |
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2.3 MODES OF OPERATION .......................................................... |
2-6 |
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2.3.1 |
Standard Mode............................................................ |
2-6 |
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2.3.2 |
Preheat Mode............................................................. |
2-7 |
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2.3.3 |
Supplemental Mode.................................................... |
2-8 |
3.0 MAINTENANCE TOOLS ............................................................. |
3-1 |
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4.0 TROUBLESHOOTING AND REPAIR........................................... |
4-1 |
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4.1 SYSTEM AND COMPONENT DIAGNOSTICS................................ |
4-2 |
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4.1.1 |
EXAMPLE PROHEAT BEHAVIOR ERROR – Code 1 ........... |
4-4 |
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4.1.2 |
START Diagnostic Code 1............................................ |
4-5 |
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4.1.3 |
FLAME OUT Diagnostic Code 2 .................................. |
4-23 |
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4.1.4 |
COOLANT FLOW Diagnostic Code3 ............................. |
4-24 |
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4.1.5 |
OVERHEAT Diagnostic Code 4.................................... |
4-25 |
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4.1.6 |
VOLTAGE Diagnostic Code 5...................................... |
4-26 |
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4.1.7 |
FLAME FAULT Diagnostic Code 6 ............................... |
4-27 |
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4.1.8 |
TEMP SENSOR/COOLANT FLOW |
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Diagnostic Code 7 .................................................... |
4-27 |
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4.1.9 |
FUEL SOLENOID VALVE Diagnostic Code 8 ................. |
4-29 |
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4.1.10 |
NOT USED Diagnostic Code 9.................................... |
4-29 |
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4.1.11 |
IGNITION MODULE Diagnostic Code 10 ...................... |
4-30 |
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4.1.12 |
COOLANT PUMP Diagnostic Code 11.......................... |
4-31 |
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4.1.13 |
MOTOR Diagnostic Code 12 ...................................... |
4-32 |
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4.1.14 |
AUXILIARY OUTPUT Diagnostic Code 13 ..................... |
4-34 |
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4.1.15 |
ACCESSORY/SWITCH OUTPUT Diagnostic Code 14 ..... |
4-34 |
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4.1.16 |
INDICATOR OUTPUT Diagnostic Code 15 .................... |
4-35 |
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4.1.17 |
SYSTEM CURRENT Diagnostic Code 16...................... |
4-35 |
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4.1.18 |
MOTOR SPEED SENSOR Diagnostic Code 17 .............. |
4-35 |
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4.1.19 |
CANbus ERROR Diagnostic Code 18 .......................... |
4-35 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
i |
4.2 |
COMPONENT MECHANICAL OR ELECTRICAL PROBLEMS.......... |
4-36 |
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4.2.1 |
Fuel Nozzle .............................................................. |
4-36 |
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4.2.2 |
Fuel Solenoid Valve .................................................. |
4-36 |
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4.2.3 |
Fuel Regulator .......................................................... |
4-36 |
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4.2.4 |
Air Compressor......................................................... |
4-36 |
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4.2.5 |
Fuel Supply Pump ..................................................... |
4-36 |
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4.2.6 |
Ignition Electrodes .................................................... |
4-36 |
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4.2.7 |
G-II PCM Fuse........................................................... |
4-36 |
4.3 |
OPERATIONAL PROBLEMS..................................................... |
4-36 |
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5.0 |
MAINTENANCE.......................................................................... |
5-1 |
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5.1 |
WEEKLY MAINTENANCE .......................................................... |
5-1 |
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5.2 |
ANNUAL MAINTENANCE .......................................................... |
5-2 |
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5.3 |
ROTARY VANE COMPRESSOR SERVICE & VANES INSTALLATION.... |
5-7 |
6.0 |
PROHEAT WARRANTY .............................................................. |
6-1 |
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ii |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
A. SAFETY
Throughout this manual, you will see notes labeled DANGER, WARNING, CAUTION, and NOTICE to alert you to special instructions or precautions concerning a particular procedure that would be hazardous if performed incorrectly or carelessly.
Observe them carefully!
These safety alerts alone cannot eliminate all hazards. Strict compliance with these special instructions and common sense are major accident prevention measures.
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ANGER |
Immedi |
hazards that will result |
in severe injury or death. |
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ARNING |
Hazards |
unsafe practices that |
could result in severe personal |
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injury or death. |
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AUTION |
Hazards |
unsafe practices that |
could result in minor injury or product or property damage.
NOTICE
Information that is important to proper installation or maintenance, but is not hazard-related.
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
A-1 |
ARNING
ARNING
ARNING
ARNING
ARNING
ARNING
ARNING
ARNING
ARNING
ANGER
SAFETY CONSIDERATIONS
Exhaust
Inhalation of exhaust gas (containing carbon monoxide) may cause severe personal injury and/or death. Anyone suspected of suffering from CO inhalation should be removed from the hazardous area and given medical assistance immediately.
Explosion Hazard
Do not operate heater where combustible fumes or airborne particles, such as sawdust, are present.
Fuel
Exercise extreme caution when working near fuel or fuel-filled equipment. Do not operate heater during fueling operations. In addition, do not smoke or handle open flame equipment, such as a blowtorch, around fuel.
Fire Hazard
Do not place any flammable items around the heater and exhaust pipe.
Batteries
Wear hand and eye protection when working near batteries. Do not smoke or use open flames near batteries.
Electrical
Electric shock can cause severe personal injury, burns, and death. Before working on any unit, disconnect the batteries. Use only approved materials and methods when working on the electrical system and follow local electrical codes. Never work with electricity in wet conditions or when you are feeling fatigued.
Poisons/Toxins
Fuel and coolant are toxic and in some cases, carcinogenic. Wear eye and hand protection at all times. Remove contaminated clothing immediately and wash contaminated skin. Do not breathe in vapors.
Moving/Hot Parts
Moving parts can cause severe injury and or death. Before working on any unit, shut it off. Do not operate any unit until protective covers have been replaced. Always ensure bolts and clamps are correctly torqued and secured. Inspect mechanical components periodically for damage and corrosion.
Coolant
Never remove the filler cap when the engine is hot – escaping steam or scalding water could cause serious personal injury. The coolant level in the expansion tank should be checked at least weekly (more frequently in high mileage or arduous conditions). Always check the level when the system is cold. Unscrew the filler cap slowly, allowing the pressure to escape before removing completely. Never run the engine without coolant.
Prevent anti-freeze coming in contact with the skin or eyes. If this occurs, rinse immediately with plenty of water. Anti-freeze will damage painted surfaces.
Never top-up with salt water. Even when travelling in territories where the water supply contains salt, always ensure you carry a supply of fresh (rain or distilled) water.
California Proposition 65 Warning
Do not operate heater in garages or in other closed or unventilated areas.
Diesel exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.
Electrical components in this product may contain lead, a chemical known to the State of California to cause cancer and birth defects and other reproductive harm.
A-2 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
B. INTRODUCTION
MODEL: M50, M80, M90, M105, & M125 G-II PCM
Figure B-1.
This manual is provided to assist in troubleshooting and maintaining the PROHEAT M-Series heater. They are designed for use on any diesel-equipped vehicle including trucks, buses (school, transit and coach), construction equipment, off road equipment, military equipment and cargo.
PROHEAT heaters are used for the following applications:
(1)Engine Block Heat – The PROHEAT will preheat an engine block to ensure reliable starting in cold weather. Its’ use throughout the year will reduce engine wear caused by cold starts.
(2)Supplemental Heat (engine running) – The PROHEAT can be used while the vehicle is operating to provide supplemental heat for the engine and/or passenger compartment.
(3)Cargo Heat – The PROHEAT can supply heat to individual compartments as a stand-alone heating system, or it can provide supplemental heat to an existing heating system.
(4)Marine – Marine applications typically involve the engineering and installation of a complete hot-water heating system of which PROHEAT is only one component. SeaStar Solutions recommends that only an expert in marine hot-water heating systems install a PROHEAT for marine applications. NOTE: It is the installer’s responsibility to ensure that an installation complies with all applicable codes and regulations.
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
B-1 |
B-2 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
C.PROHEAT CONTROL MODULE (PCM) TYPE
The G-I Proheat Control Module (PCM) is no longer available has been replaced with the G-II PCM. The new G-II PCM incorporates a new dual mode analog/digital temperature sensor and advanced Data Link software. Both styles can be identified in the figures below.
THIS MANUAL COVERS ONLY THE G-II PCM.
Please see G-I PCM Service Manual (M50/M80) part number
SL9150. This can be found by visiting www.proheat.com
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METRI-PACK |
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12052644 AUX |
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CONNECTOR |
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METRI-PACK |
KEYING |
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12052641 AUX |
FOUR PIN |
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CONNECTOR |
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DUAL MODE |
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KEYING |
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TEMPERATURE |
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SENSOR |
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2 X TWO PIN |
CONNECTOR |
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ANALOG |
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TEMPERATURE |
STATUS |
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SENSOR |
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CONNECTORS |
INDICATOR |
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LIGHT |
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7 PIN |
6 PIN |
DATA LINK |
CONNECTOR |
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DATA LINK |
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CONNECTOR |
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NO AIR FILTER |
AIR FILTER |
RETENTION |
RETENTION |
TANGS |
TANGS |
G-I PCM |
G-II PCM |
Figure C-1. G-I PCM and G-II PCM.
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
C-1 |
DUAL MODE
TEMP SENSOR
STATUS
INDICATOR
LIGHT
G-II PCM
DUAL MODE
TEMP
SENSOR
DUAL MODE
HAS 4 PIN
CONNECTOR
Figure C-2. G-II PCM can be identified on a heater by looking for the status indicator light. Also the Dual Mode Temp Sensor has a 4 pin connector.
ANALOG TEMP
SENSOR
NO STATUS
INDICATOR
LIGHT
G-I PCM
ANALOG
TEMP
SENSOR
ANALOG SENSOR
HAS 2 PIN
CONNECTOR
Figure C-3. G-I PCM can be identified on a heater by not having the status indicator light. Also the Analog Temp Sensor has a 2 pin connector.
C-2 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
D. COMPRESSOR TYPE
NOTICE
For continuity, all figures shown in this manual will use a diaphragm compressor unless where special instructions or illustrations are required.
The rotary vane compressor is no longer available has been replaced with the diaphragm type. Both styles can be identified in the Figures below. Please refer to the M-Series Parts Book at www.proheat.com for part numbers. This manual covers both styles of compressors and clearly identifies the differences where applicable.
ROTARY VANE COMPRESSOR
Serial Numbers:
500000 – 699999
Figure D-1. Rotary Vane Compressor Type.
DIAPHRAGM COMPRESSOR
Serial Numbers:
700000 – To Date
Figure D-2. Diaphragm Compressor Type.
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
D-1 |
D-2 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
E. MODEL DESCRIPTIONS
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Please refer to the M-Series Parts Book at www.proheat.com for detailed part |
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descriptions and part numbers. Included in the parts book are optional features |
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such as a timer, coolant pump and associated installation equipment and |
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maintenance tools. The following information describes the general characteristics |
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of M-Series models covered in this manual: Heat Output, G-II PCM CANbus, |
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Voltage, Fuel Fitting optional configurations, and Air Intake optional configurations. |
Heat Output |
The M Series is available in: |
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50,000 BTU/H (15 kW/H) |
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80,000 BTU/H (23 kW/H) |
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90,000 BTU/H (26 kW/H) |
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105,000 BTU/H (31 kW/H) |
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125,000 BTU/H (37 kW/H) |
G-II PCM |
CANbus SAE J1939. |
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The M-Series G-II Proheat Control Module (G-II PCM) is available with CANbus |
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SAE J1939. |
Voltage |
12 V or 24 V. |
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The M-Series is available in either a 12 V (10 – 15 VDC) or 24 V (20 – 30 |
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VDC) model. |
MODEL: M80-24V
S/ N: XXXXXX
POWER: 95 WATTS
FUEL TYPE: DIESEL
MAX PRESS: 2 BAR
OPER. VOLT: 20-30 VDC
HEAT OUTPUT: 24.0 KW
INSTALLATION DATE:
07 08 09 10 11 12
Made by SeaStar Solutions
Richmond BC Canada
PID 200101
Figure E-1.
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
E-1 |
Fuel Fitting – Optional |
-4 JIC, NPT 1/8” and -4 Hose Barb. |
Configurations |
There are fuel fitting options including JIC, NPT, hose barb and tight access. |
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Refer to parts book at www.proheat.com. |
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Figure E-2. |
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Air Intake – Optional |
Splash Guard, Straight and Right Angle Snorkel Attachments. |
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Configurations |
The M-Series can be equipped with a splash guard, straight and right angle |
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intake snorkels. Refer to parts book at www.proheat.com |
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NOTICE |
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For continuity, all figures shown in this |
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manual will use a splash guard intake. |
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SPLASH GUARD |
STRAIGHT 3" OD |
26° SNORKEL ELBOW |
STRAIGHT SNORKEL |
SNORKEL ELBOW |
2.25" (55 mm) OD |
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Figure E-3. Air Intake Options.
E-2 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
1.0TECHNICAL SPECIFICATIONS
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M50 12V |
M50 24V |
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M80 12V |
M80 24V |
M90 24V |
M105 24V |
M125 24V |
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RATING BTU/hr (kW) |
50,000 |
50,000 |
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80,000 |
80,000 |
90,000 |
105,000 |
125,000 |
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(15) |
(15) |
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(23) |
(23) |
(26) |
(31) |
(37) |
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SYSTEM VOLTAGE |
12 |
24 |
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12 |
24 |
24 |
24 |
24 |
Nominal DC Voltage (Range) |
(10–15) |
(20–30) |
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(10–15) |
(20–30) |
(20–30) |
(20–30) |
(20–30) |
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CURRENT DRAW (MAX) Amps |
9.5 |
5.2 |
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8.5 |
5.2 |
5.2 |
9.5 |
9.5 |
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FUEL CONSUMPTION US gal/hr (L/hr) |
0.48 |
0.48 |
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0.78 |
0.78 |
0.82 |
1.05 |
1.10 |
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(1.8) |
(1.8) |
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(2.95) |
(2.95) |
(3.10) |
(3.97) |
(4.16) |
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IGNITION TYPE |
Electronic Spark Ignition |
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COOLANT OUTPUT TEMPERATURE MAX. |
185°F (85°C) |
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AMBIENT OPERATING TEMPERATURE |
-40°F to +122°F (-40°C to +50°C) |
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WEIGHT lbs (kg) |
53 (24) |
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57.5 (26.1) |
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60 (27.2) |
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HEAT EXCHANGER CAPACITY US gal (l) |
0.5 (2) |
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0.6 (2.3) |
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0.7 (2.6) |
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COOLANT SYSTEM |
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Minimum Capacity/Recommended Flow |
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Rate Through Heater US gpm (lpm) |
7.5 (28) |
7.5 (28) |
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12 (45) |
12 (45) |
13.2 (50) |
15.8 (60) |
18 (68) |
Maximum Coolant Pressure PSI (bar) |
29 (2) |
29 (2) |
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29 (2) |
29 (2) |
29 (2) |
29 (2) |
29 (2) |
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ANGER |
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FUEL TYPES |
Do not |
gasoline. |
COMPATIBLE |
Diesel (ULSD, #1, #2, Arctic), JP8, Jet A1 |
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Bio Fuels - Contact Proheat www.proheat.com |
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SYSTEM OUTPUTS |
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AUXILIARY OUTPUT |
Same as Power Supply Voltage |
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Maximum 1 Amp draw (over-load shut-off protection) |
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High-side switched |
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SWITCH/TIMER |
Same as Power Supply Voltage |
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POWER |
Maximum 1 Amp draw (over-load shut-off protection) |
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High-side switched |
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COOLANT PUMP |
Same as Power Supply Voltage |
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Maximum 10 Amp draw (over-load shut-off protection) |
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High-side switched |
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INDICATOR LIGHT |
Same as Power Supply Voltage |
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Maximum 1 Amp draw (over-load shut-off protection) |
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High-side switched |
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SYSTEM INPUTS |
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SWITCH |
Same as Power Supply Voltage |
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Standard Run Mode |
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Preheat Run Mode |
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Supplemental Run Mode |
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COOLANT PUMP |
Same as Power Supply Voltage |
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AUXILIARY |
Allows independent operation of Coolant Pump through |
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the G-II Proheat Control Module |
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POWER |
12 Volt or 24 Volt |
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PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
1-1 |
1.1 PHYSICAL – M50/M80
COOLANT INLET
9.55 (243) |
1.97 (50) |
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COOLANT OUTLET |
DUAL MODE TEMPERATURE |
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2 x 1.50 (38) |
SENSOR |
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TOP VIEW |
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SERVICE SPACE REQUIREMENT (MAY VARY SEE NOTE 3 & PAGE 1-3)
5.77 |
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23.24 (590) |
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10.13 (257) |
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(147) |
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G-II |
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-4 JIC MALE FUEL INLET (INTERNAL |
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9.00 (229) |
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PCM |
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FUEL FILTER) (SEE NOTE 5) |
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8.58 |
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7.63 |
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4.45 |
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(218) |
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(194) |
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(113) |
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AIR INTAKE |
2.03 (52) |
|
|
|
5.39 |
.75 (19) |
|
FRONT VIEW |
3.98 |
|
EXHAUST |
|
|
(137) |
|
|
ALTERNATE |
|
HEAT EXCHANGER |
REAR VIEW |
|||||
|
SNORKELS |
(101) |
|
(SEE NOTE 2 AND 4) |
||||
|
AVAILABLE |
8.14 (207) |
|
|
(SEE NOTE 6) |
|
|
|
|
(SEE PAGE 1-3 ) |
SIDE VIEW |
|
|
|
|
||
|
|
|
|
|
|
|||
|
|
|
12.60 (320) |
|
|
|
|
|
|
|
3.23 |
(82) |
2.75 (70) |
4 x M8 x 1.25 MOUNTING PEM NUTS |
|
||
|
|
|
|
|
||||
|
|
|
|
|
4.33 |
5.90 |
|
|
|
|
|
|
|
(110) |
(150) |
|
|
6 x .41 (10)
BOTTOM VIEW
NOTES: 1. DIMENSIONS ARE IN INCHES (MILLIMETERS IN BRACKETS).
2.TYPICAL EXHAUST CUTOUT 3.25" CENTERED ON EXHAUST.
3.SERVICE SPACE REQUIRED TO REMOVE BURNER HEAD AND COMBUSTION TUBE FOR PERIODIC INSPECTION AND CLEANING.
4.THE EXHAUST PIPE SHOULD HAVE A MINIMUM DIAMETER OF 2.75", A MAXIMUM LENGTH OF 5' AND HAVE NO MORE THAN 180° OF BENDS.
5.ALTERNATE FUEL INLET CONFIGURATIONS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
6.ALTERNATE HEAT EXCHANGERS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
7.SNORKEL HOSE REQUIRED FOR THIS AIR INTAKE OPTION. CONTACT TECH SUPPORT AT WWW.PROHEAT.COM FOR LENGTH AND BEND RESTRICTIONS.
1-2 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
4.71 |
24.31 (617) |
AIR INTAKE OPTION: |
|
(120) |
|||
|
3" OD SNORKEL SEE NOTE 7 |
||
SERVICE |
|
||
|
|
||
SPACE |
|
|
|
REQUIREMENT |
|
|
|
(SEE NOTE 3) |
|
|
9.21 (234) 
|
|
|
AIR INTAKE OPTION: |
|
|
|
2.25" OD ELBOW WITH 26° ADAPTER PLATE |
||
3.93 |
29.09 (637) |
|
SEE NOTE 7 |
|
CAN BE INSTALLED AT: 26°, 116°, 206°, 296° |
||||
(100) |
||||
|
|
116° |
||
SERVICE |
|
|
||
|
|
|
||
SPACE |
|
|
|
|
REQUIREMENT |
|
|
|
|
(SEE NOTE 3) |
|
|
26° |
|
|
|
|
||
|
|
206° |
296° |
|
|
9.99 (254) |
|
||
|
|
|
||
5.20 |
24.00 (610) |
|
AIR INTAKE OPTION: |
|
(132) |
|
|||
|
2.25" OD SNORKEL SEE NOTE 7 |
|||
|
|
|||
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
8.90 (226) 
4.22 
24.80 (630) (107)
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
9.70 (246) 
NOTES: 1. DIMENSIONS ARE IN INCHES (MILLIMETERS IN BRACKETS).
2.TYPICAL EXHAUST CUTOUT 3.25" CENTERED ON EXHAUST.
3.SERVICE SPACE REQUIRED TO REMOVE BURNER HEAD AND COMBUSTION TUBE FOR PERIODIC INSPECTION AND CLEANING.
4.THE EXHAUST PIPE SHOULD HAVE A MINIMUM DIAMETER OF 2.75", A MAXIMUM LENGTH OF 5' AND HAVE NO MORE THAN 180° OF BENDS.
AIR INTAKE OPTION: 2.25" OD ELBOW SEE NOTE 7
CAN BE INSTALLED AT 0°, 90°, 180°, 270°
90°
180° 
0°
270°
5.ALTERNATE FUEL INLET CONFIGURATIONS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
6.ALTERNATE HEAT EXCHANGERS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
7.SNORKEL HOSE REQUIRED FOR THIS AIR INTAKE OPTION. CONTACT TECH SUPPORT AT WWW.PROHEAT.COM FOR LENGTH AND BEND RESTRICTIONS.
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
1-3 |
PHYSICAL – M90/105
COOLANT INLET
12.05 (306) |
1.97 (50) |
|
COOLAN T OUTLET |
DUAL MODE TEMPERATURE |
|
|
|
2 x 1.50 (38) |
SENSOR |
|
|
|
|
|
|
|
|
|
|
|
|
|
TOP VIEW |
|
|
|
|
|
|
SERVICE SPACE REQUIREMENT |
|
|
|
|
|
|
|
|
|
(MAY VARY SEE NOTE 3 & PAGE 1-3) |
|
|
|
|
|
|
|
|
|
8.25 |
|
|
25.74 (654) |
|
|
10.13 (257) |
|
|
|
(210) |
G-II |
-4 JIC MALE FUEL INLET (INTERNAL |
|
9.00 (229) |
|||
|
|
|
|
||||||
|
|
|
PCM |
FUEL FILTER) (SEE NOTE 5) |
|
|
|
||
|
|
|
|
|
|
|
|
9.5 |
8.55 |
|
5.37 |
|
|
|
|
|
|
(241) |
(217) |
|
|
|
|
|
|
|
|
|
|
|
(136) |
|
|
|
|
|
|
|
|
FRONT VIEW |
AIR INTAKE |
|
2.03 (52) |
|
|
|
5.39 |
||
3.98 |
|
|
EXHAUST |
|
|
(137) |
|||
ALTERNATE |
|
|
|
|
|||||
|
|
|
|
HEAT EXCHANGER |
REAR VIEW |
||||
|
SNORKELS |
(101) |
|
|
(SEE NOTE 2 AND 4) |
||||
|
AVAILABLE |
8.14 (207) |
|
|
|
|
(SEE NOTE 6) |
|
|
|
(SEE PAGE 1-3 ) |
|
SIDE VIEW |
|
|
|
|||
|
|
|
|
|
|
||||
|
|
|
|
|
12.60 (320) |
5.00 (27) |
|
||
|
|
|
|
3.22 |
(82) |
2.75 (70) |
|
3 x M8 x 1.25 |
|
|
|
|
|
|
|
|
|||
|
5.91 |
4.33 |
|
|
|
|
|
4.33 |
|
|
(150) |
(110) |
|
|
|
|
|
(110) |
|
|
|
|
|
|
|
|
|
.394 |
|
|
|
|
|
|
|
|
|
(10) |
|
|
|
|
2 x .394 (10) |
|
|
|
|
|
|
BOTTOM VIEW
NOTES: 1. DIMENSIONS ARE IN INCHES (MILLIMETERS IN BRACKETS).
2.TYPICAL EXHAUST CUTOUT 3.25" CENTERED ON EXHAUST.
3.SERVICE SPACE REQUIRED TO REMOVE BURNER HEAD AND COMBUSTION TUBE FOR PERIODIC INSPECTION AND CLEANING.
4.THE EXHAUST PIPE SHOULD HAVE A MINIMUM DIAMETER OF 2.75", A MAXIMUM LENGTH OF 5' AND HAVE NO MORE THAN 180° OF BENDS.
5.ALTERNATE FUEL INLET CONFIGURATIONS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
6.ALTERNATE HEAT EXCHANGERS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
7.SNORKEL HOSE REQUIRED FOR THIS AIR INTAKE OPTION. CONTACT TECH SUPPORT AT WWW.PROHEAT.COM FOR LENGTH AND BEND RESTRICTIONS.
1-4 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
7.21 
26.81 (681) 
(183)
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
9.21 (234) 
6.43 
31.59 (802) 
(163)
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
9.99 (254) 
7.70 
26.50 (673) 
(196)
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
8.90 (226) 
AIR INTAKE OPTION:
3" OD SNORKEL SEE NOTE 7
AIR INTAKE OPTION:
2.25" OD ELBOW WITH 26° ADAPTER PLATE
SEE NOTE 7
CAN BE INSTALLED AT: 26°, 116°, 206°, 296°
116°
26°
206°
296°
AIR INTAKE OPTION:
2.25" OD SNORKEL SEE NOTE 7
6.72 
27.30 (693) (171)
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
9.70 (246) 
NOTES: 1. DIMENSIONS ARE IN INCHES (MILLIMETERS IN BRACKETS).
2.TYPICAL EXHAUST CUTOUT 3.25" CENTERED ON EXHAUST.
3.SERVICE SPACE REQUIRED TO REMOVE BURNER HEAD AND COMBUSTION TUBE FOR PERIODIC INSPECTION AND CLEANING.
4.THE EXHAUST PIPE SHOULD HAVE A MINIMUM DIAMETER OF 2.75", A MAXIMUM LENGTH OF 5' AND HAVE NO MORE THAN 180° OF BENDS.
AIR INTAKE OPTION: 2.25" OD ELBOW
SEE NOTE 7
CAN BE INSTALLED AT 0°, 90°, 180°, 270°
90°
180° 
0°
270°
5.ALTERNATE FUEL INLET CONFIGURATIONS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
6.ALTERNATE HEAT EXCHANGERS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
7.SNORKEL HOSE REQUIRED FOR THIS AIR INTAKE OPTION. CONTACT TECH SUPPORT AT WWW.PROHEAT.COM FOR LENGTH AND BEND RESTRICTIONS.
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
1-5 |
PHYSICAL – M125
COOLANT INLET
13.55 (344) |
1.97 (50) |
|
COOLANT OUTLET |
DUAL MODE TEMPERATURE |
|
|
|
2 x 1.50 (38) |
SENSOR |
|
|
|
|
|
|
|
|
|
|
|
|
TOP VIEW |
|
|
|
|
|
|
SERVICE SPACE REQUIREMENT |
|
|
|
|
|
|
|
|
|
(MAY VARY SEE NOTE 3 & PAGE 1-3) |
|
|
|
|
|
|
|
|
|
9.78 |
|
27.24 (692) |
|
|
|
10.13 (257) |
|
|
|
(248) |
G-II |
-4 JIC MALE FUEL INLET (INTERNAL |
|
|
9.00 (229) |
|
||
|
|
|
|
|
|||||
|
|
PCM |
FUEL FILTER) (SEE NOTE 5) |
|
|
|
|
||
|
|
|
|
|
|
8.58 |
|
|
7.63 |
|
4.45 |
|
|
|
|
(218) |
|
(194) |
|
|
|
|
|
|
|
|
|
|
|
|
(113) |
|
|
|
|
|
|
|
|
|
AIR INTAKE |
|
2.03 (52) |
|
|
|
5.39 |
.75 (19) |
|
FRONT VIEW |
3.98 |
|
|
EXHAUST |
|
|
(137) |
|
|
ALTERNATE |
|
|
HEAT EXCHANGER |
REAR VIEW |
|||||
|
SNORKELS |
(101) |
|
|
(SEE NOTE 2 AND 4) |
||||
|
AVAILABLE |
8.14 (207) |
|
|
|
(SEE NOTE 6) |
|
|
|
|
(SEE PAGE 1-3 ) |
|
SIDE VIEW |
|
|
|
|
||
|
|
|
|
|
|
|
|||
|
|
|
|
12.60 (320) |
|
|
|
|
|
|
|
|
3.23 |
(82) |
2.75 (70) |
4 x M8 x 1.25 MOUNTING PEM NUTS |
|
||
|
|
|
|
|
|
||||
|
|
|
|
|
|
4.33 |
5.90 |
|
|
|
|
|
|
|
|
(110) |
(150) |
|
|
|
|
6 x .41 (10) |
|
|
|
|
|
|
|
BOTTOM VIEW
NOTES: 1. DIMENSIONS ARE IN INCHES (MILLIMETERS IN BRACKETS).
2.TYPICAL EXHAUST CUTOUT 3.25" CENTERED ON EXHAUST.
3.SERVICE SPACE REQUIRED TO REMOVE BURNER HEAD AND COMBUSTION TUBE FOR PERIODIC INSPECTION AND CLEANING.
4.THE EXHAUST PIPE SHOULD HAVE A MINIMUM DIAMETER OF 2.75", A MAXIMUM LENGTH OF 5' AND HAVE NO MORE THAN 180° OF BENDS.
5.ALTERNATE FUEL INLET CONFIGURATIONS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
6.ALTERNATE HEAT EXCHANGERS AVAILABLE, SEE PARTS BOOK FOR FURTHER INFORMATION.
7.SNORKEL HOSE REQUIRED FOR THIS AIR INTAKE OPTION. CONTACT TECH SUPPORT AT WWW.PROHEAT.COM FOR LENGTH AND BEND RESTRICTIONS.
1-6 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
8.71
(221)
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
9.21 (234) 
7.93
(201
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
9.99 (254) 
9.02
(22.9)
SERVICE
SPACE
REQUIREMENT (SEE NOTE 3)
8.90 (226) 
28.31 (719)
33.09 (840)
28.00 (711)
AIR INTAKE OPTION:
3" OD SNORKEL SEE NOTE 7
AIR INTAKE OPTION: 2.25" OD ELBOW
WITH 26° ADAPTER PLATE
SEE NOTE 7
CAN BE INSTALLED AT: 26°, 116°, 206°, 296°
116°
26°
206°
296°
AIR INTAKE OPTION:
2.25" OD SNORKEL SEE NOTE 7
|
|
|
AIR INTAKE OPTION: 2.25" OD |
|
|
8.22 |
|
ELBOW SEE NOTE 7 |
|
|
28.80 (732) |
CAN BE INSTALLED AT: |
|
|
|
(209) |
|
||
|
|
0°, 90°, 180°, 270° |
|
|
|
|
|
|
|
|
SERVICE |
|
90° |
|
|
SPACE |
|
|
|
|
|
|
|
|
|
REQUIREMENT |
|
|
|
|
(SEE NOTE 3) |
|
|
|
|
|
|
180° |
0° |
|
|
9.70 (246) |
270° |
|
|
|
|
|
|
NOTES: |
1. DIMENSIONS ARE IN INCHES (MILLIMETERS IN BRACKETS). |
5. ALTERNATE FUEL INLET CONFIGURATIONS AVAILABLE, SEE |
||
|
2. TYPICAL EXHAUST CUTOUT 3.25" CENTERED ON EXHAUST. |
PARTS BOOK FOR FURTHER INFORMATION. |
|
|
|
|
|
||
3. SERVICE SPACE REQUIRED TO REMOVE BURNER HEAD AND |
6. ALTERNATE HEAT EXCHANGERS AVAILABLE, SEE PARTS BOOK |
|
FOR FURTHER INFORMATION. |
||
COMBUSTION TUBE FOR PERIODIC INSPECTION AND CLEANING. |
||
7. SNORKEL HOSE REQUIRED FOR THIS AIR INTAKE OPTION. |
||
4. THE EXHAUST PIPE SHOULD HAVE A MINIMUM DIAMETER OF |
||
CONTACT TECH SUPPORT AT WWW.PROHEAT.COM FOR |
||
2.75", A MAXIMUM LENGTH OF 5' AND HAVE NO MORE THAN |
||
LENGTH AND BEND RESTRICTIONS. |
||
180° OF BENDS. |
||
|
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
1-7 |
8-1
MANUAL SERVICE PCM II-G SERIES-M PROHEAT
P5 - AUX (OUTPUT) |
PROHEAT G-II PCM |
|
METRI-PACK |
|
|
150 SERIES, 2 PIN |
|
|
P3 - DATALINK |
P7 - DUAL MODE TEMP |
|
SENSOR |
||
(DOWNLOAD) |
|
|
METRI-PACK |
P6 - CANBUS (OPTIONAL) |
|
150 SERIES, 7 PIN |
METRI-PACK 150 SERIES, |
|
|
3-PIN |
|
P2 - CONTROL (SWITCH) |
|
|
METRI-PACK |
P4 - PUMP (COOLANT) |
|
150 SERIES, 8 PIN |
||
METRI-PACK 150 SERIES, |
||
|
||
|
2 PIN |
|
P1 - POWER |
|
|
METRI-PACK |
|
|
280 SERIES, 2 PIN |
|
NOTES:
1/ WIRE MUST MEET OR EXCEED SAE J1128 GLX SPECIFICATIONS.
2/ ALL WIRE AND INSULATION THICKNESSES TO MATCH THOSE SPECIFIED BY DELPHI FOR THE GIVEN PART NUMBERS IN TABLE 1
3/ ALL UNUSED CONNECTIONS ON THE PCM ARE SUPPLIED WITH CONNECTOR PLUGS ON STANDARD HEATERS.
4/ ALL CONTROL SIGNAL INPUT VOLTAGES MUST MATCH HEATER SUPPLY VOLTAGE.
5/ ALL HEATER OUTPUT SIGNALS WILL MATCH HEATER SUPPLY VOLTAGE.
6/ WIRE USED ON DATALINK CONNECTOR USB CONNECTIONS (P3) MUST MEET UNIVERSAL SERIAL BUS CABLES AND CONNECTION STANDARDS REV 2.0. USB WIRES MAXIMUM LENGTH IS 13.1FT (4M).
PROHEAT PCM |
|
O.E.M. SUPPLIED |
|||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
P1 |
A |
A |
|
POWER |
B |
B |
|
|
A |
A |
|
|
B |
B |
|
P2 |
C |
C |
|
D |
D |
||
CONTROL |
|||
E |
E |
||
|
|||
|
F |
F |
|
|
G |
G |
|
|
H |
H |
|
P6 |
A |
A |
|
CAN BUS |
B |
B |
|
|
C |
C |
|
|
A |
A |
|
|
B |
B |
|
|
C |
C |
|
P3 |
|
|
|
DATALINK |
E |
E |
|
|
F |
F |
|
|
G |
G |
|
|
H |
H |
|
P4 |
A |
A |
|
COOLANT |
|||
PUMP |
B |
B |
|
OUTPUT |
|
|
|
P5 |
A |
A |
|
AUXILIARY |
|||
B |
B |
||
OUTPUT |
|||
|
|
PROHEAT PCM
|
FUSE |
|
|
|
|
BATTERY POSITIVE (FUSE/BREAKER 30 AMP) |
30 AMP |
|
|
|
|
|
|
|
|
|
|
BATTERY NEGATIVE (GROUND) |
|
|
LOCATED AS PER |
|
|
|
|
INDICATOR |
|
|
|
|
|
CUSTOMER REQUEST OR |
TIMER OPTION TI* OR TII |
||
|
+ |
LIGHT |
OEM REQUIREMENT |
||
|
– |
|
|
|
|
|
VEHICLE BATTERY |
|
RED |
THERMAL SYSTEMS |
|
|
|
MANUAL |
|||
|
|
|
|
GREEN |
|
INDICATOR OUTPUT (HIGH SIDE SWITCHED. DASH OR PROHEAT TOGGLE SWITCH LIGHT) (1 AMP MAX) |
|
WHITE |
|
|
GROUND (INDICATOR GROUND) (1 AMP MAX) |
|
BLACK |
CLOCK TIME |
DAY |
POWER OUTPUT (CONSTANT POWER. TIMER/SWITCH REMOTE PANEL) (1 AMP MAX SHARED WITH P3-E) |
|
|
|
TIMER |
|
|
|
|
|
GROUND (ACCESSORY OUTPUT GROUND) (1 AMP MAX) |
|
*TI TIMER REQUIRES HARNESS PID: 200100 |
||
MAIN SWITCH INPUT (STANDARD "ON" SIGNAL OR PREHEAT UNLATCH) – ACTIVE HIGH |
|
|
|
|
PREHEAT SWITCH INPUT – ACTIVE HIGH |
ON |
SPRING CENTERED |
|
|
SUPPLEMENTAL SWITCH INPUT – ACTIVE HIGH |
|
DOUBLE THROW |
|
|
|
MOMENTARY SWITCH. |
|
||
PUMP (COOLANT) SWITCH INPUT – ACTIVE HIGH |
|
|
||
|
LOCATED ON THE |
|
||
|
OFF |
DRIVERS CONSOLE. |
|
|
CAN-H |
|
|
|
|
MECHANICS DISABLE |
|
|
|
|
CAN-L |
|
|
|
|
SWITCH MOUNTED IN A |
|
|
|
|
SHIELD |
|
|
|
|
PROTECTED LOCATION |
|
|
|
|
UNUSED |
|
ENGINE RUN (ALTERNATOR SIGNAL) |
|
|
|
SIGNAL FROM OEM HEATING SYSTEM |
|||
USBD - (I/O) – SEE NOTE 6 |
|
|||
|
TO TURN ON COOLANT PUMP WHEN |
|
||
USB GROUND – SEE NOTE 6 |
|
REQUIRED FOR A REASON OTHER |
|
|
|
|
THAN WHEN THE HEATER REQUIRES |
|
|
|
|
THE PUMP. |
|
|
ACCESSORY POWER OUTPUT (1 AMP MAX) |
|
|
|
|
USBD + (I/O) – SEE NOTE 6 |
COOLANT |
– 85 |
87a |
87 |
|
|
|
|
|
|
USB POWER – SEE NOTE 6 |
PUMP |
|
|
|
COOLANT PUMP |
|
|
|
|
|
RELAY |
+ 86 |
|
|
|
|
|
|
|
|
|
UNUSED |
|
30 |
|
OPTIONALLY, PUMP CAN BE CONNECTED DIRECTTLY |
|
|
|
|||
|
|
|
|
|
TO PCM (10 AMP MAX CURRENT DRAW) |
|
|
|
|
|
COOLANT PUMP OUTPUT (10 AMP MAX) |
|
|
|
|
|
|
|
|
|
|
COOLANT PUMP OUTPUT GROUND (10 AMP MAX) |
|
|
|
|
TABLE 1: CONNECTOR ASSEMBLY PART NUMBERS |
|
|
|
||
|
|
|
|
|
|
|
|
|||
AUXILIARY OUTPUT (HIGH SIDE SWITCHED) (1 AMP MAX) |
|
FUSE |
|
PCM |
CONNECTOR |
LOCK |
TERMINAL |
WIRE SEAL |
CAVITY PLUG |
|
|
|
|
|
CONNECTOR |
PART# |
PART# |
PART# |
PART# |
PART# |
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AUXILIARY OUTPUT GROUND (AUXILIARY OUTPUT) (1 AMP MAX) |
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+ |
– |
P1-POWER |
15300027 |
15300014 |
12077413 |
12015193 |
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VEHICLE BATTERY |
P2-CONTROL (SWITCH) |
12047937 |
12066304 |
12048074 |
12048086 |
12059168 |
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P3-DATALINK (DOWNLOAD) |
12047938 |
12066304 |
12048074 |
12048086 |
12059168 |
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P4-PUMP (COOLANT) |
12052641 |
12052634 |
12048074 |
12048086 |
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P5-AUXILIARY |
12052644 |
12052634 |
12048074 |
12048086 |
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O.E.M. SUPPLIED |
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P6-CAN BUS |
12110293 |
12052845 |
12048074 |
12048086 |
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ELECTRICAL PCM II-G 2.1
1.3 TORQUE SPECIFICATIONS
Solenoid Valve
• Lubricate O-ring with diesel fuel.
• Install solenoid valve by hand.
• Ensure poppet and spring remain in place during assembly.
• Torque solenoid valve to fuel block to 25 in. lbs. ± 3 in. lbs. (2.8 Nm ± 0.3 Nm).
Regulator
• Install 2 o-rings on back side of regulator.
• Torque screws (2) to 75 in. lbs. ± 3 in. lbs. (8.5 Nm ± 0.3 Nm).
Fuel Delivery Block
• Ensure all three O-rings are in place.
• Torque screws (3) to 75 in. lbs. ± 7 in. lbs. (8.5 Nm ± 0.8 Nm).
Nozzle
• Lubricate O-ring on nozzle with diesel fuel.
• Torque nozzle to fuel block to 150 in. lbs. ± 10 in. lbs. (16.9 Nm ± 1.1 Nm).
Nozzle Assembly
• Torque nozzle to nozzle stem to 30 in. lbs. ± 3 in. lbs. (3.4Nm ± .3 Nm).
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
1-9 |
Motor
• Rotate motor shaft until motor drops into fuel pump gear.
• Ensure correct alignment (refer to ‘Motor Replacement’ on page 4-33)
• Torque bolts (4) to 75 in. lbs. ± 7 in. lbs. (8.5 Nm ± 0.8 Nm).
Blower Housing
• Torque bolts (2) to 75 in. lbs. ± 7 in. lbs. (8.5 Nm ± 0.8 Nm).
Ignition Module
• Torque screws (2) to 75 in. lbs. ± 7 in. lbs. (8.5 Nm ± 0.8 Nm).
Dual Mode Temperature Sensor
• Install O-ring onto sensor.
• Torque sensor to 100 in. lbs. ± 10 in. lbs. (11.6 Nm ± 1.1 Nm).
Burner Head/Heat Exchanger
• Torque bolts (2) to 100 in. lbs. ± 10 in. lbs. (11.6 Nm ± 1.1 Nm).
1-10 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
Enclosure Lid (Optional)
• Torque screws (4) to 100 in. lbs. ± 10 in. lbs. (11.6 Nm ± 1.1 Nm).
Fuel Filter Fitting
• Install O-ring onto fitting.
• Torque fitting to 100 ± 10 in. lbs. (11.3 ± 1.1 Nm).
Diaphragm Compressor ONLY
Serial Numbers 70000 and above
• Install O-rings in to cylinder head and valve cover (not shown).
• Ensure connecting rod is at BDC and ensure the diaphragm is concentric to the diaphragm opening (not shown).
• Torque to 27 in. lbs +/- 3 in. lbs using a crisscross pattern.
Rotary Vane Compressor ONLY
Serial Numbers 500000 – 699999
• Install O-rings into burner flange.
• Install compressor into burner flange. (Ensure correct alignment—refer to Compressor Replacement’ on page 5-7.)
• Torque screws (2) to 75 in. lbs. ± 3 in. lbs. (8.5 Nm ± 0.3 Nm).
Relief Valve – for Use with Rotary Vane Compressor ONLY
Serial Numbers 600000 – 699999
• Torque to 25 in. lbs. ± 3 in. lbs. (2.8 Nm ± 0.3 Nm).
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
1-11 |
1-12 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
2.0PRINCIPLE OF OPERATION
2.1COMPONENT DESCRIPTIONS
Combustion Air Blower:
Motor:
Fuel Supply Pump:
Impeller-style blower driven by the Motor provides the principle combustion air.
Drives the Combustion Air Blower, Air Compressor and Fuel Supply Pump.
A positive displacement, gear-type pump that draws fuel from the vehicle fuel tank and supplies it to the Fuel Regulator. Pressure is regulated between
5 – 10 PSI by means of an internal relief valve. Fuel is re-circulated within the pump, therefore a fuel return line to the tank is not required.
Fuel Regulator:
Fuel Nozzle:
Diaphragm-type pressure reducing valve. The Fuel Regulator drops the fuel supply pressure to atmospheric pressure (0 PSI).
Air-aspirating type burner nozzle. Compressed air flows through the air passages, exiting the nozzle in front of the fuel orifice creating a vacuum in the fuel supply. This draws fuel from the Fuel Regulator and the combined fuel/air mixture is atomized into the combustion chamber.
Fuel Solenoid Valve:
Air Compressor:
Ignition Module:
G-II PCM:
(PROHEAT Control Module)
Electrically operated solenoid valve which controls fuel flow to the Fuel Nozzle.
Diaphragm compressor that supplies air pressure to the Fuel Nozzle.
Note that older versions of M-Series use a rotary vane compressor. Refer to page D-1 for more information.
Electronic Ignition Module with plug-in electrode.
Electronic control module that monitors inputs from the sensors and controls outputs to PROHEAT components. It has an integrated Flame Sensor that photoelectrically measures the intensity of the flame to determine if a flame is present. Also built-in to the G-II PCM is a Status Indicator Light that shows operation, function/component problems and CANbus connectivity to assist with troubleshooting. Operation and fault history can be downloaded and viewed on a computer using PROHEAT Data Link software.
Note that the older G-I PCM version does not have a built-in Status Indicator Light. Refer to page C-1 for more information.
Combustion Tube: Directs the air supplied by the combustion air blower through a swirler into the combustion zone, mixing it with the atomized fuel/air mixture from the Fuel Nozzle.
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
2-1 |
Heat Exchanger: Coolant is circulated through the heat exchanger via the inlet and outlet ports. Heat is transferred from the heat exchanger through the inner wall of the exchanger into the coolant. The exhaust gases are directed out through the exhaust port.
Dual Mode Temperature
Sensor G-II PCM:
Measures the coolant temperature near the outlet port of the heat exchanger and sends this information to the G-II PCM. The dual mode sensor contains both digital and analog sensing elements for more accurate and reliable measurements. The sensor also touches the inner heat exchanger surface to measure the heat exchanger temperature for an overheat condition.
Coolant Pump:
Air Relief:
(Rotary Vane Compressor ONLY)
|
RNING |
The Dual Mode Temperature |
sor must be properly installed in the heat |
exchanger at all times for overheat protection.
Circulates coolant through the PROHEAT and vehicle heating system. Depending on the PROHEAT installation, it may be operated by the G-II PCM.
Regulates air pressure to the fuel nozzle.
For use with Rotary Vane Compressor ONLY Serial Numbers 600000 – 699999. Refer to page D-1 for more information.
2-2 |
PROHEAT M-SERIES G-II PCM SERVICE MANUAL |
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