Monitor Products 422, 441 heating system Service Manual

The Monitor 422 and 441 heating systems are designed to provide efficient and safe heating for your home. Both systems feature automatic ignition, thermostatically controlled operation, a built-in timer, and automatic reset after power failure. The Monitor 422 has the option of being fueled by an internal capsule tank or a remote fuel tank.

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Monitor Products Heating System 422, 441 Service Manual | Manualzz

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MONITOR HEATING SYSTEMS
Service Manual
MONITOR 422 MONITOR 441
The information contained herein is proprietary to Monitor Products. Inc. shall not be disclosed, duplicated, nor
otherwise copied in whole or part for any other purpose without express written permission of the Legal
Department of Monitor Products. Inc. This data is issued to authorized Monitor Servicing Personnel for guidance
in the installation and maintenance of the subject product and is intended for use by authorized Monitor service
personnel only. Further, Monitor Products, Inc. reserves the right to make improvements and corrections and to
alter specifications of products described herein, at any time without prior notice
P.O.BOX3408
PRINCETON, NEW JERSEY 08543
MONITOR HEATING SYSTEMS
Table of Contents
Section 1: Description Pa
9e 1 7
1-1 Specifications: 1-2 Special Features: 1-3 Safety Features:
t-4 Description; 1-5 Spill Tray: 1-6 Heater Cabinet: 1-7 Combus-
tion System: 1-8 Combustion Chamber: 1-9 Burner Pot; 1-10 Combus-
tion Ring Assembly: 1-11 Burner Cap: 1-12 Flame Sensor; 1-13 Igniter;
1-14 Combustion Air System: 1-15 Flue Pipe: 1-16 Combustion Blower:
1-17 Heat Exchanger: 1-18 Air Circulation Fan; 1-19 Air Pressure
Switch; 1-20 Fuel Delivery System; 1-21 External Fuel Tank; 1-22
Fusible,Link Valve: 1-23 Fuel Constant Level Valve; 1-24 Solenoid
Pump: 1-25 Electrical System; 1-26 Microprocessor; 1-27 Tempera-
ture Sensor; 1-28 Safety Mechanism; 1-29 Cloth Covered Exhaust
Pipe; 1-30 Air Circulation Fan Guard; 1-31 Fuse; 1-32 Overheat
Protector Switches : 1-33 Slide Selector For the Reset Temp.
Section 2: Installation Page 9-21
2-1 Introduction; 2-2 Physical Placement of Heater 2-3 Drilling
Requirements: 2-4 Power Requirements; 2-5 Fuel Tank Require-
ments: 2-6 Temperature Sensor Wiring Requirements; 2-7 Building
Codes: 2-8 Un-packing; 2-9 Heater Installation; 2-10 Installing an
Extension Kit; 2-11 Typical Monitor Lifter Pump Installations; 2-12
Uses for the Elbow Adapter Kit; 2-13 Fuel Tank Installation; 2-14
Heater Installation
Section 3: Operation Page 23-34
3-1 Introduction; 3-2 Operating Specifications; 3-3 Operating Con-
trols and Indicators; 3-4 Pre-operation Check List 3-5 Operation; 3-6
Manual Heater Operation: 3-7 Automatic Heater Operation; 3-8
Reprogrammmg the Monitor Heater: 3-9 Heat Sensor; 3-10 Monitor
Shutdown: 3-11 Out of Fuel; 3-12 Recovery from a Power Failure; 3-13
Recovery from Overheat Condition; 3-14 Recovery from Blown Fuse
3-15 Operation Control system
Section 4: Maintenance Page 35-38
4-1 Introduction; 4-2 Periodic Maintenance: 4-3 Inspect Exhaust Air
Piping; 4-4 Verify Igniter Operation, 4-5 Clean Fuel Constant Level
Valve Filter; 4-6 Cleaning Fusible Link Valve Intake Fitting on M-422;
4-7 Corrective Maintenance: 4-8 Replacement of Fuses; 4-9 Fuel
Contamination
MONITOR HEATING SYSTEMS
Table of Contents
)
Section 5: Servicing Pa
ge 39 - 41
5-1 Introduction; 5-2 Measurerment of Fuel Flow rate; 5-3 Removal of
Water Deposits and Contaminants from Fuel Constant Level Valve
and Fuel Lines: 5-4 Cleaning the Bum Chamber 4 Burner Pot: 5-5
Cleaning the Fuel Inlet
Section 6: Troubleshooting Page 43-56
Resistance Values
component Voltage Readings
Test Point Voltage
Troubleshooting Diagrams (Mechanical)
Troubleshooting Diagrams (Electrical)
Indication of Failure mode
Section 7: Electrical System Page 58-66
Schematic
Monitor 441 Printed Circuit Board Wiring Diagram
Monitor 422 Printed Circuit Board Wiring Diagram
•
,
MONITOR HEATING SYSTEMS
Section 1: Description
1-1 SPECIFICATIONS
Model
Fuel Type
Heater Efficiency
Monitor 441
Crystal Clear K-i Kerosene
93% '
Monitor 422
Crystal Clear K-1 Kerosene
93%'
Heat Rating High:43.000 8TU/hour
H.Medium:33,900 BTU/hour
LMedium:21.000 BTU/hour
Low:l6.200 BTU/hour
High:22.000 BTU/hour
H.Medium:17,400 BTU/hour
L.Medium:11,700 BTU/hour
Low:9.600 BTU/hour
Heater Output High:40.000 BTU/hour
H.Medium: 31,500 BTU/hour
LMedium: 19,500 BTU/hour
Low: 15.000 BTU/hour
High:20,400 BTU/hour
H.Medium: 16.200 BTU/hour
LMedium: 10,900 BTU/hour
Low: 8,900 BTU/hour
Fuel Tank SeparateiNot supplied with heater) 1.32 Gallons; Separate tank optional
Fuel Consumption High: 0.319 Gallon/hour
H.Medium: 0 25 Gallon/hour
L.Medium: 0.16 Gallon/hour
Low 0.12 Gallon/hour
High: 0.164 Gallon/hour
H.Medium: 0.13 Gallon/hour
L.Medium: 0.09 Gallon/hour
Low: 0.07 Gallon/hour
Power Source 120 Volts AC; 60 Hz. 120 Volts AC; 60 Hz.
Power Consumption Ignition: 340 Watts
Operation: 80 Watts (Average)
Ignition: 250 Watts
Operation: 55 Watts (Average)
Heated Air Delivery High: 388 Cubic feet/minute
H.Medium: 388 Cubic feet/minute
LMedium: 300 Cubic feet/minute
Low: 300 Cubic feet/minute
High: 176 Cubic feet/minute
H.Medium: 176 Cubic feet/minute
LMedium: 113 Cubic feet/minute
Low: 113 Cubic feet/minute
Vent Pipe Hole
Dimensions
Weight
2 'Hnches Diameter
Height: 26.6 inches
Width: 28.7 inches
Depth: 13.8 inches
82 Pounds, empty
2 Y* -inches Diameter
Height 25.6 inches
Width: 20.9 inches
Depth: 12.4 inches
55 Pounds, empty
* When considering heat of condensation is lost tnen net efficiency
1-2 SPECIAL FEATURES
AUTOMATIC IGNITION
Memory Back Up: Set memory can be kept in case
of power failure for up to 5 minutes.
Dual Blowers: Separate fans for combustion and
room air circulation.
Thermostatically Controlled: Adjusts to the desired
room temperature.
Built-in Timer: Heater will automatically operate as
programmed by the user.
Automatic Reset After Power Failure: Heater will
automatically resume operation after power is
restored.
Indicator Lights: Easy-to-see signals show-when
heater is in operation, when timer is activated.
and when the burner is operating in low, medium
or high modes.
Choice of Fuel Supply: Large tank gravity fed
system, large tank system with pump.(M-44i)
Built-in capsule tank or connect to separate tank.
(M-422)
Multiple Heat Exchanger: Extracts 87% of heat from
burner.
S 87%.
Clean Operation: Products of combustion are vented
outside.
Consumes No Room Air Air for combustion is drawn
from outside.
Easy Installation: Complete instructions included in
this guide.
1-3 SAFETY FEATURES
SAFE RE-LIGHTING: Heater will not restart until its
combustion chamber has cooled.
ELECTRICAL PROTECTION: Heater automatically
shuts off in the unlikely event of a malfunction in
the electrical circuitry or disruption of the power
supply.
NO EXHAUST IN ROOM: Products of combustion
are discharged outdoors.
FLUE PIPE: Outside air is drawn through a pipe-
within-a-pipe venting system. This process
preheats combustion air and regains heat from
exhaust gases.
1-4 DESCRIPTION
The Monitor heaters are composed of the following:
/

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Key features

  • Automatic ignition

  • Thermostatically controlled

  • Built-in timer

  • Automatic reset after power failure

  • Multiple heat exchanger

  • Clean operation

  • Consumes no room air

Frequently asked questions

Both the Monitor 422 and 441 use Crystal Clear K-1 kerosene as fuel. The use of other fuels such as gasoline, white gas, camp fuel, or other flammable liquids is strictly prohibited. Using an incorrect fuel source can be dangerous and lead to an explosive fire and severe injury.

The Monitor 422 has a height of 25.6 inches, a width of 20.9 inches, and a depth of 12.4 inches, while the Monitor 441 has a height of 26.6 inches, a width of 28.7 inches, and a depth of 13.8 inches.

The filter should be cleaned or replaced periodically. Cleaning or replacement intervals will depend on the purity and quality of the fuel.

User questions

D I

Jennifer D.

How is the Monitor 441 heater ignition performed and what are the steps to start the heater?

No votes

The Monitor 441 heating system utilizes Automatic Ignition and does not use a manually lit pilot burner. To start the heater: 1. Prime the heater (if necessary). 2. Switch to Manual mode (if needed). 3. Set the desired room temperature. 4. Press the ON/OFF switch to ON. The built-in Igniter will automatically start the combustion process.

D I

Jennifer D.

How is the pilot burner lit on the Monitor 441 heating system?

No votes

The Monitor 441 system utilizes Automatic Ignition and does not require a pilot burner to be manually lit. The ignition sequence starts automatically when the heater is turned on.

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