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Monitor 441 - Service Manual

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MONiTOR
HEATING
SYSTEMS
Service
Manual
MONITOR422
.
MONITOR 22
MONITOR
21,
MONITOR
441
MONITOR
41
MONITOR
40

Table of Contents

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Summary

Section 1: Description

1-1 SPECIFICATIONS

Details model specifications, fuel type, efficiency, heat rating, output, fuel tank, and consumption.

1-2 SPECIAL FEATURES

Lists automatic ignition, dual blowers, thermostat control, built-in timer, and indicator lights.

1-3 SAFETY FEATURES

Highlights safe re-lighting, electrical protection, and flue pipe safety.

1-4 DESCRIPTION

Provides an overview of the heater's main components and systems.

1-5 SPILL TRAY

Describes the spill tray's function for floor protection and heater stability.

1-6 HEATER CABINET

Describes the steel cabinet that houses all internal components.

1-7 COMBUSTION SYSTEM

Explains the system responsible for heat production via fuel and air combustion.

1-8 COMBUSTION CHAMBER

Details the combustion chamber, its connections, and associated parts.

1-9 BURNER POT

Describes the burner pot's design for supporting efficient combustion.

1-10 COMBUSTION RING ASSEMBLY

Explains the assembly designed to promote efficient combustion.

1-11 BURNER CAP

Describes the burner cap's function in shaping the flame.

1-12 FLAME SENSOR

Explains the flame sensor's role in supervising the flame.

1-13 IGNITER

Details the igniter's function in pre-heating and igniting the fuel mixture.

1-14 COMBUSTION AIR SYSTEM

Explains how air is channeled for combustion and heating.

1-20 FUEL DELIVERY SYSTEM

Details the system for maintaining fuel flow for efficient combustion.

1-21 EXTERNAL FUEL TANK

Describes options for external fuel storage for the Monitor 422.

1-22 FUSIBLE LINK VALVE

Explains the safety mechanism that cuts off fuel during overheating.

1-23 FUEL CONSTANT LEVEL VALVE

Details the valve with auto shut-off and fuel set lever.

1-24 SOLENOID PUMP

Describes the solenoid pump's role in metering fuel flow.

1-25 ELECTRICAL SYSTEM

Overview of power supply and operational phases.

1-26 MICROPROCESSOR

Details the microprocessor's functions for safety, control, and timing.

1-27 TEMPERATURE SENSOR

Explains the sensor for gauging room temperature.

1-28 SAFETY MECHANISMS

Covers devices protecting users and the heater.

1-29 CLOTH COVERED EXHAUST PIPE

Describes insulating covers for hot exhaust lines.

1-30 AIR CIRCULATION FAN GUARD

Explains the guard protecting against fan blade contact.

1-31 FUSE

Details the fuses protecting the heater from overloads.

1-32 OVERHEAT PROTECTOR SWITCHES

Explains the switches that shut down the heater due to overheating.

1-33 SLIDE SELECTOR FOR THE RESET TEMP.

Describes the selector for setting reset temperature after power interruption.

Section 2: Installation

2-1 INTRODUCTION

Overview of the quick and economical installation process.

2-2 PHYSICAL PLACEMENT OF HEATER

Guidelines for heater location and clearances.

2-3 DRILLING REQUIREMENTS

Details the hole size and pitch for flue pipe installation.

RECOMMENDED TOOL KIT FOR MONITOR HEATER SERVICE TECHNICIANS

Lists essential tools for installation and service.

2-4 POWER REQUIREMENTS

Specifies voltage, frequency, and electrical connection requirements.

2-5 FUEL TANK REQUIREMENTS

Outlines requirements for remotely located fuel tanks.

2-6 TEMPERATURE SENSOR WIRING REQUIREMENTS

Explains how to wire the wall-mounted temperature sensor.

2-7 BUILDING CODES

Emphasizes compliance with local codes for installation.

2-8 UNPACKING

Provides steps for safely unpacking the heater.

2-9 HEATER INSTALLATION

Guidelines for choosing a heater location.

FLUE PIPE CLEARANCES

Details required clearances for frontal, overhead, and side installations.

HOW TO PREVENT FREEZING IN COLD CLIMATE.

Instructions for preventing flue pipe freezing in cold climates.

INSTALLATION OF FLUE PIPE WINDOW KIT

Steps for installing a window kit for venting.

STEP 2: Install Window Kit in the Window

Detailed steps for installing the window kit frame and adapter.

STEP 3: Install Window Lock

Instructions for installing the special window lock.

2-10 INSTALLING AN EXTENSION KIT

Guidance on constructing air and exhaust lines for extension kits.

Figure 2-8 MAX LENGTHS AND BENDS ALLOWABLE USING EXTENSION KITS

Illustrates maximum lengths and bends for extension kits.

2-11 TYPICAL MONITOR LIFTER PUMP INSTALLATIONS

Illustrates typical installations for kerosene lifter pumps.

2-12 USES FOR THE ELBOW ADAPTER KIT

Explains using the elbow adapter kit for conversion and venting.

2-13 FUEL TANK INSTALLATION

Provides pictorial views of storage facilities and delivery systems.

ALTERNATIVE SOURCES OF FUEL STORAGE

Illustrates different types of fuel storage like gravity fed tanks.

2-14 HEATER INSTALLATION

Discusses safe physical placement of heaters on combustible flooring.

Figure 2-12 TYPICAL FUEL LINE CONNECTIONS

Shows typical fuel line connections for Monitor 441 and 422.

Section 3: Operation

3-1 INTRODUCTION

Overview of the easy-to-operate vented kerosene heater.

3-2 OPERATING SPECIFICATIONS

Lists specifications for Monitor 441 and 422, including efficiency and power.

Table 3-2 HEATER PERFORMANCE SPECIFICATIONS

Lists Monitor 422 performance specs at various heat output settings.

3-3 OPERATING CONTROLS AND INDICATORS

Explains controls and indicators for operating and monitoring the heater.

Control and Indicator Functions

Details the function of various controls and indicator lights.

3-4 PRE-OPERATION CHECK LIST

Checklist for ensuring operational readiness before startup.

3-5 OPERATION

Overview of manual and automatic operation control.

3-6 MANUAL HEATER OPERATION

Step-by-step guide for operating the heater manually.

INSTRUCTIONS FOR ECONOMY PLUS MODE

Details on engaging and the benefits of Economy Plus mode.

3-7 AUTOMATIC HEATER OPERATION

Steps for programming and operating the heater automatically.

STEP 1: Program Clock for Current Time

Instructions for setting the current time on the clock.

STEP 2: Program the 1 st Time Temperature

Steps to program the first automatic time and temperature setting.

STEP 3: Program the Remaining Times

Instructions for programming additional time/temperature settings.

STEP 4: Select Automatic Operation

How to enable automatic operation mode.

STEP 5: Turn Monitor ON

Final step to turn the heater on for automatic operation.

3-8 REPROGRAMMING THE MONITOR HEATER

Guide for reprogramming current time and automatic settings.

3-9 HEAT SENSOR

Information on heat sensor location and mounting.

3-10 MONITOR SHUTDOWN

Procedure for shutting down the Monitor heater.

3-11 OUT OF FUEL

Symptoms and procedures for refueling the heater.

Refueling:

Step-by-step guide for refueling the capsule fuel tank.

3-12 RECOVERY FROM A POWER FAILURE

Instructions for resuming operation after power interruptions.

3-13 RECOVERY FROM OVERHEAT CONDITION

Steps to recover from an overheat condition.

STEP 4: Check for Cause of Overheating

Diagnosing causes of overheating, like air circulation issues.

STEP 5: Remove Louver Assembly

Procedure for removing the louver assembly for cleaning.

STEP 6: Clean Heater Interior

Instructions for cleaning the heater's interior components.

3-14 RECOVERY FROM BLOWN FUSE

Procedure for recovering from a blown fuse.

3-15 OPERATION CONTROL SYSTEM

Details the operation timing chart for the M-441 model.

M-422 OPERATION TIMING CHART

Details the operation timing chart for the M-422 model.

Section 4: Maintenance

4-1 INTRODUCTION

Differentiates between periodic and corrective maintenance.

4-2 PERIODIC MAINTENANCE

Schedule for tasks to maintain heater efficiency.

Table 4-1 SUGGESTED MAINTENANCE ACTIVITIES

Lists suggested maintenance tasks and remarks.

4-3 INSPECT EXHAUST;AIR PIPING

Procedure for inspecting and testing exhaust/air piping for leaks.

4-4 VERIFY IGNITER OPERATION

Steps to visually inspect the igniter's operation.

4-5 CLEAN FUEL CONSTANT LEVEL VALVE FILTER

Procedure for cleaning the filter in the constant level valve.

4-6 CLEANING FUSIBLE LINK VALVE INTAKE FITTING ON M-422

Steps to clean the intake fitting on the fusible link valve.

4-7 CORRECTIVE MAINTENANCE

Introduces general remedies for operating difficulties.

4-8 REPLACEMENT OF FUSES

Procedure for replacing fuses due to short circuits or malfunctions.

4-9 FUEL CONTAMINATION

Steps to diagnose and address fuel contamination issues.

Section 5: Servicing

5-1 INTRODUCTION

Covers causes and procedures for efficiency losses.

5-2 MEASUREMENT OF FUEL FLOW RATE

States that fuel flow rates are preset and should not be readjusted.

5-3 REMOVAL OF WATER DEPOSITS AND CONTAMINANTS FROM FUEL CONSTANT LEVEL VALVE AND FUEL LINES

Procedure to remove water deposits and contaminants from the fuel system.

5-4 CLEANING THE BURN CHAMBER & BURNER POT

Instructions for cleaning the burn chamber and burner pot.

5-5 CLEANING THE FUEL INLET

Procedure for cleaning the fuel inlet nozzle.

Section 6: Troubleshooting

Monitor 422;441 Resistance values

Table showing resistance values for various components.

Monitor 22 41 Resistance values

Table showing resistance values for Monitor 22 and 41 components.

Monitor 422;441 Component Voltage Readings

Table detailing component voltage readings for AC and DC.

Monitor 22 41 Component Voltage Readings

Table detailing component voltage readings for Monitor 22 and 41.

TEST POINT VOLTAGE

Table showing test point voltages during different operational stages.

TEST POINT VOLTAGE

Table showing test point voltages for Monitor 22/41.

INDICATION OF FAILURE MODE

Lists digital display codes, reasons for indication, and trouble points.

GENERAL CHECKS

Flowchart for general checks and troubleshooting steps.

Troubleshooting Flowchart: Burn Mode Issues

Flowchart for diagnosing improper burn mode operation.

Troubleshooting Flowchart: Flame Failure

Flowchart for diagnosing flame failure and related circuits.

Troubleshooting Flowchart: Ignition Issues

Flowchart for diagnosing no ignition or combustion blower problems.

Troubleshooting Flowchart: Pump & Component Failures

Flowchart for diagnosing pump and other component failures.

Troubleshooting Flowchart: Fuel Feed Issues

Flowchart for diagnosing fuel feed issues.

Troubleshooting Flowchart: Smoke & Noise Issues

Flowchart for diagnosing smoke production and combustion noise.

Troubleshooting Flowchart: Overheat Thermostat

Flowchart for diagnosing overheat thermostat activation.

Troubleshooting Flowchart: PCB & Fuel Issues

Flowchart for diagnosing PCB and fuel contamination issues.

Section 7: Electrical System

SCHEMATIC

Electrical schematic diagram for Monitor 441.

CONNECTION OF LEAD WIRES for Monitor 441

Diagram showing lead wire connections for Monitor 441.

CONNECTION OF LEAD WIRES for Monitor 422

Diagram showing lead wire connections for Monitor 422.

Manometer Readings

Manometer Readings for Fan Speed Adjustments

Details manometer readings for fan speed damper adjustments.

Diagram of Pressure Sides for Readings

Diagram indicating low and high pressure sides for readings.

MONITOR 441 EXPLODED VIEW

MONITOR 441 SERVICE PARTS LIST

Lists service parts for the Monitor 441 with item numbers and descriptions.

MONITOR 422 EXPLODED VIEW

MONITOR 422 SERVICE PARTS LIST

Lists service parts for the Monitor 422 with item numbers and descriptions.

MONITOR 41 EXPLODED VIEW

MONITOR 41 SERVICE PARTS LIST

Lists service parts for the Monitor 41 with item numbers and descriptions.

MONITOR 22 EXPLODED VIEW

MONITOR 22 SERVICE PARTS LIST

Lists service parts for the Monitor 22 with item numbers and descriptions.

Monitor 441 Specifications

General IconGeneral
BrandMonitor
Model441
CategoryHeating System
LanguageEnglish

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