Related Manuals for McQuay LMS
Summarization of Contents
Installation Guidelines
General Installation Steps
General guidelines for installing the equipment, including inspection and preparation steps.
Unit Location Requirements
Specifies requirements for selecting and preparing the installation location for optimal performance and serviceability.
Unit Setup and Configuration
Unit Arrangement Options
Describes the two fan discharge and piping arrangement possibilities for the units.
Filter Access Details
Explains that each unit is shipped with a filter bracket for side filter removal.
Vibration Isolation Recommendations
Recommends mounting units on vibration isolators and provides details on isolator types and hole locations.
Airflow and Drive Adjustment
Air Balancing Procedures
Explains the use of variable pitch motor sheaves for airflow adjustment and the importance of motor current checks.
Sheave Adjustment Steps
Details the step-by-step process for adjusting sheaves, including loosening setscrews and setting pitch diameter.
Ductwork and Ventilation
Ductwork and Attenuation Guidelines
Covers standards for discharge and return ductwork, including noise transmission and material recommendations.
Ventilation Air Considerations
Discusses requirements for outside air ventilation, temperature control, and system integration.
Optional Duct Collar and Filter Rack
Describes the installation of optional duct collar kits and 2" filter racks for return air connections.
Piping and Water System Preparation
Piping Installation Requirements
Details piping configurations, materials, valve requirements, and condensate piping standards.
Cleaning and Flushing System
Details the procedures for cleaning and flushing the water circulating system before unit operation.
System Cleaning and Start-up
Cleaning and Flushing System (Continued)
Continues the procedures for cleaning, flushing, and refilling the water system with clean water.
Unit Start-up Procedures
Outlines the steps for initial unit start-up, including valve operation, thermostat settings, and airflow checks.
Operating Limits and Electrical Data
Environment Operating Limits
Specifies the environmental conditions (air and water limits) for unit operation to ensure performance and reliability.
Electrical Data and Voltage Limits
Provides information on voltage requirements, wiring, and minimum/maximum voltage limits for unit operation.
Wiring Diagrams - Mark IV/AC
Single Compressor Unit Wiring
Illustrates the wiring schematic for a single compressor Mark IV/AC unit.
Wiring Diagrams - Mark IV/AC
Dual Compressor Unit Wiring
Shows the wiring diagram for a dual compressor Mark IV/AC unit.
Wiring Diagrams - MicroTech
Single Compressor Unit Wiring
Presents the wiring diagram for a single compressor MicroTech unit, including controller connections.
Wiring Diagrams - MicroTech
Dual Compressor Unit Wiring
Details the wiring schematic for a dual compressor MicroTech unit, including controller connections.
Unit Operation and Control
General Unit Operation
Explains the basic operation of the units, including control systems and thermostat compatibility.
Mark IV/AC Control Unit Features
Describes the features and operation of Mark IV/AC control units for single and dual compressor systems.
Mark IV/AC Sequence of Operation
Details the sequence of operation for the Mark IV/AC control system and its terminal strip designations.
Control System Status and Faults
LED Status and Fault Output Indicators
Explains the meaning of LED indicators and fault output signals for various operating modes and fault conditions.
Remote Resetting of Manual Lockouts
Explains how to remotely reset automatic lockouts caused by faults like high pressure or low temperature.
Fault Retry Mechanism
Details the fault retry feature to prevent nuisance trips and the automatic lockout mechanism.
Thermostat Connection Diagrams - Sizes 070-121
7-Day Programmable Thermostat Connections
Provides connection diagrams for 7-day programmable thermostats for specific unit sizes.
Non-Programmable Thermostat Connections
Provides connection diagrams for non-programmable thermostats for specific unit sizes.
Thermostat Connection Diagrams - Sizes 180-290
Dual Circuit Thermostat Connections
Shows thermostat connection diagrams for larger unit sizes, including dual circuits.
Optional Remote Sensor Installation
Details the installation and wiring for an optional remote sensor.
Miscellaneous Options and Kits
Pump Restart Relay Kit
Explains the function and installation of the pump restart relay kit for loop water control.
Motorized Valve and Relay
Motorized Valve Installation
Illustrates the installation of a motorized valve and its relay for compressor operation control.
Boilerless System Kit (BSK)
Boilerless System Kit Installation and Function
Covers the installation and function of the Boilerless System Kit for remote duct heater control.
Auxiliary Relay Functionality
Auxiliary Relay Connection Examples
Provides examples of how to use the auxiliary relay for interfacing external equipment or control devices.
MicroTech 2000 Field Options
Output Control Signal Configuration
Describes configurable output control signals for MicroTech 2000 units, such as scheduled output and fresh air damper control.
Troubleshooting Heat Pump Issues
Troubleshooting Flowchart and Checks
Presents a visual flowchart to diagnose common operational issues with water source heat pumps.
Maintenance and Warranty
Routine Maintenance Tasks
Details routine maintenance tasks including filter replacement and fan motor lubrication.
Condensate Drain and Performance Logging
Covers condensate drain pan maintenance and the importance of recording performance measurements.
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