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Table of Contents
Related Manuals for Garmat 99275
Summarization of Contents
Heater Description and Installation
Heater Description
Detailed overview of the direct gas-fired fresh-air appliance and its applications.
Installation Codes and Standards
Requirements for safe and efficient operation according to NFPA and local codes.
Configuration Air Box Installation
Instructions for attaching the air box to the makeup unit for proper connection.
Installation Methods and Components
Installation Location Guidance
Guidance on roof top installation and indoor suspension mounting of the unit.
Belts and Drives System
Procedures for installing and adjusting fan belts and sheaves for proper operation.
Gas Manifold Specifications
Description of the gas manifold and fuel pressure specifications for natural gas and LPG.
Electrical Requirements and Safety
Motor Electrical Requirements
Details motor amperage requirements for various voltage and phase configurations.
Electrical and Ignition Safety
Warning to protect electrical and ignition systems from water damage.
Operational Components and Controls
Manual High Limit Function
Function of the manual high limit switch that terminates power above 200°F.
Air Flow Sensor Operation
How air flow sensors detect issues and affect burner operation.
Flame Guard Device
Checks for flame presence and requires manual reset upon lockout.
Temperature Control Systems
Details analog and digital temperature controls for different models.
Freeze Thermostat
Low temperature limit control recommended for cold climates.
Gas Pressure, Cabin Pressure, and PLC
Gas Pressure Switches
High/Low gas pressure switches and proof of closure switch for safety.
Cabin Pressure Control System
Manages cabin pressure via exhaust damper and modulating motor.
Programmable Logic Controller (PLC)
Controls automatic functions like flash-off, bake, and cool down times.
Operation Modes and Sequences
Ventilation and Pressure Testing
Requirements for outdoor air ducting and procedures for line pressure testing.
Sequence of Operation: Power On
Overview of power supply to controls and motors upon startup.
Sequence of Operation: Run or Spray
Procedure for starting the spray cycle via the SPRAY switch.
Bake and Shut Down Modes
Detailed steps for Bake and Shut Down operations for different models.
Gas Train Power Circuits
Power flow for ignition and gas valves in various operating modes.
Compressed Air for Spray Application
Control of compressed air for spray booths, requires Spray mode.
Startup Procedures and Adjustments
Pre-Startup Checks
Pre-startup inspections of unit, voltages, and burner assembly.
Startup Steps and Amperage
Procedures for motor checks, amperage verification, and gas pressure adjustment.
Startup Adjustments
Adjusting high fire setting, burner ribbon, and bake timers.
Air Through-put Testing
Testing air through-put and adjusting sheaves as necessary.
Maintenance and Troubleshooting
Routine Maintenance Tasks
Regular lubrication, belt checks, blower wheel, burner, and filter cleaning.
Troubleshooting Common Issues
Diagnosing and resolving common operational issues like no power or temperature problems.
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