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Lennox ROOFTOP FLEXY FHK 160 User Manual

Lennox ROOFTOP FLEXY FHK 160
100 pages
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INSTALLATION
OPERATING &
MAINTENANCE MANUAL
ROOFTOP
FLEXY
English
Sept 2001
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Lennox ROOFTOP FLEXY FHK 160 Specifications

General IconGeneral
ModelFHK160
CategoryAir Conditioner
Refrigerant TypeR-410A
Phase3
Heating Capacity160, 000 BTU/hr
Cooling Capacity160, 000 BTU/hr

Summary

TRANSPORT - HANDLING

INSTALLATION

PRELIMINARY CHECK

Essential checks to be completed before proceeding with installation.

INSTALLATION ON A ROOF MOUNTING FRAME

Detailed steps for correctly installing the unit on a roof mounting frame.

COMMISSIONING

Before connecting to the power

Pre-power checks for safety, electrical connections, and settings.

Powering up the system with the unit isolating switch

Procedures for safely powering up the unit and checking fan rotation.

Safety Test

Performing various safety tests including filter, smoke, and circuit breaker checks.

AIR FLOW BALANCING

TEST

Procedure for testing and adjusting airflow using pulleys and belts.

FILTERS

HOT WATER COILS

GAS BURNER

PRELIMINARY CHECKS ON COMMISSIONING

Essential checks before commissioning the gas burner system.

IGNITION DETAILS

Explanation of the burner ignition sequence and related components.

TROUBLESHOOTING

Common issues and troubleshooting steps for the gas burner.

BELT TENSION

PULLEYS

USING THE KP 17 COMFORT CONTROL DISPLAY

USING THE KPO2 MAINTENANCE CONTROL DISPLAY

LIST OF SETPOINTS

Comprehensive list of adjustable setpoints with their levels and ranges.

VARIABLE LIST

List of system variables, their codes, and descriptions.

USING THE KPO7 GRAPHIC CONTROL DISPLAY

BMS VOLT FREE CONTACTS KIT

CLIMATIC™ PARAMETERS

DESCRIPTION OF PARAMETERS

Detailed explanation of various CLIMATIC™ system parameters.

ELECTRICITY

ELECTRICAL WIRING DIAGRAMS

DIAGRAM OF POWER

Diagram illustrating the main power supply connections.

CLIMATIC™ CONTROLLER WIRING

Wiring diagrams for the CLIMATIC™ controller and its components.

SAFETY AND ERROR CODES

GENERAL ERROR CODES

List of common error codes and their brief meanings.

SUPPLY AIR TEMPERATURE SAFETY SYSTEM

Safety system logic for supply air overtemperature and undertemperature.

Refrigeration system faults

General faults related to the refrigeration system.

High pressure switch safety or compressor electrical safety

Safety logic for high pressure switches and compressor electrical protection.

Before Calling for Assistance

MAIN OPERATING FAULTS

General troubleshooting guide for common operating faults.

The unit no longer works

Troubleshooting steps when the unit is completely non-operational.

PLANNED MAINTENANCE

WARRANTY

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