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Lennox Fhm 150

Lennox Fhm 150
130 pages
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Providing indoor climate comfort
FLEXY & FLEXY WSHP
Installation, operating
and maintenance
FLEXYII-WSHP-IOM-0909-E

Table of Contents

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Lennox Fhm 150 Specifications

General IconGeneral
BrandLennox
ModelFhm 150
CategoryHeat Pump
LanguageEnglish

Summary

INSTALLATION

Transport and Handling

Procedures for safe delivery, storage, and initial handling of the unit.

Preliminary Installation Checks

Essential checks before installing the unit to ensure readiness and safety.

Installation Site Requirements

Guidelines for site preparation, including surface, clearances, and connections.

Duct Connections

Recommendations for duct connections between ducts and the unit.

Water Connections

Guidelines for connecting water circuits for water source heat pump operation.

Water Loop Configuration

Diagrams and explanations of standard and optional water loop configurations.

Roof Mounting Frame Installation

Steps and considerations for installing the unit on a roof mounting frame.

Curbing and Flashing Procedures

Instructions for installing roof curbs and flashing for weather sealing.

Roof Curb Specifications

Details on non-adjustable, adjustable, multidirectional, return, and transition roof curbs.

COMMISSIONING

Electrical Connections and Power Supply

Ensuring correct electrical connections and a stable three-phase power supply.

Unit Startup Procedures

Step-by-step guide for powering up the unit, checking rotation, and initial setup.

Performance and Safety Tests

Procedures for running tests, checking safety features, and verifying operational parameters.

VENTILATION SYSTEM

Belt Tension and Pulley Adjustment

Guidelines for checking belt tension, alignment, and adjusting pulleys for optimal fan operation.

Airflow Balancing and Fan Speed

Methods for measuring, estimating, and adjusting fan speed for correct airflow.

Filter Management

Information on filter replacement, monitoring pressure drop, and fault codes.

Air Sock Control

Operation and startup sequence for the air sock control system.

UV Light System

Details on the UV light option for bacteria control and safety precautions.

HEATING OPTIONS

Hot Water Coil System

Hydraulic connections, freeze protection, and installation of hot water coils.

Electric Heater Module

General information, sizing, and installation of electric heaters.

Gas Burner Systems

Preliminary checks, gas supply, burner startup, and pressure adjustments for gas burners.

ENERGY RECOVERY

Energy Recovery Installation Steps

Step-by-step guide for installing the energy recovery module onto the rooftop unit.

IMPORTANT SAFETY NOTICES

General Safety Instructions

Critical safety warnings and precautions for working on the unit and its systems.

Unit Handling and Storage

Guidelines for safe delivery, storage, lifting, and handling of the equipment.

UV Light Safety Precautions

Specific warnings regarding UV light emission and exposure risks.

ELECTRICAL DATA AND WIRING DIAGRAMS

Diagram Reference Legend

Explanation of symbols and references used in the wiring diagrams.

Main Electrical Diagrams

Electrical schematics showing main power distribution and component connections.

Control System Interfaces

Details on the Climatic 50 controller, its inputs, outputs, and associated wiring.

Customer Connection Diagrams

Diagrams for general customer connections, including TCB and ADC configurations.

REFRIGERATION SYSTEM

Refrigerant R410 A Properties

Information on R410A refrigerant properties, safety, and chemical characteristics.

Advanced Scroll Temperature Protection (ASTP)

Explanation of ASTP operation, compressor protection modes, and service procedures.

Refrigeration Circuit Schematics

Schematic diagrams illustrating refrigeration circuit configurations for different models.

MAINTENANCE AND TROUBLESHOOTING

Refrigeration System Faults

Troubleshooting guide for refrigeration faults, LP/HP issues, and system problems.

Fan and Heater Fault Diagnosis

Troubleshooting for indoor/outdoor fan issues and electric heater faults.

Water Leaks and Control System Issues

Identifying and resolving water leaks and problems with DC50/DS50 control systems.

Preventive Maintenance Schedule

Recommended tasks, frequencies, and estimated times for regular unit maintenance.

WARRANTY AND COMPLIANCE

Warranty Terms and Conditions

Details on the unit's warranty, including terms, conditions, and anti-corrosion coverage.

Conformity and Certification

EC, NF, and PED conformity declarations and relevant certifications.

EC CONFORMITY DECLARATION

ROOFTOP PED CONFORMITY CERTIFICATE

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