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Lennox BAC020SNM

Lennox BAC020SNM
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Providing indoor climate comfort
BALTIC R410A
BALTIC R410A-IOM-0708-E
Installation, operating
and maintenance

Table of Contents

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Lennox BAC020SNM Specifications

General IconGeneral
Voltage208/230V
RefrigerantR-410A
PhaseSingle
Dimensions (Outdoor Unit)28.5"H x 31.5"W x 31.5"D
Cooling Capacity20, 000 BTU/h

Summary

Commissioning Report

Installation

Transport and Handling

Procedures for safely receiving and moving the unit.

Installation Requirements and Clearances

Site preparation, placement guidelines, and required space around the unit.

Roof Mounting Frame Installation

Procedures for mounting the unit on roof frames, including curb positioning.

Curbing and Flashing

Instructions for insulation, flashing, and sealing roof curb penetrations.

Heat Recovery and Economiser Installation

Steps for installing heat recovery modules and economiser systems.

Commissioning

Electrical Connections and Preliminary Checks

Guidance on electrical connections and essential pre-startup checks.

Unit Startup and Powering

Procedures for powering up, starting, and running the unit.

Run Test Procedures

Performing operational tests and safety checks after initial startup.

Arrangement Drawings

Non-Adjustable Roofcurb Drawings

Dimensional drawings for non-adjustable roof curb types.

Adjustable Roofcurb Drawings

Dimensional drawings for adjustable roof curb types.

Multidirectional Horizontal Roofcurb Drawings

Diagrams for multidirectional horizontal roof curb configurations.

Exhaust Roofcurb Drawings

Dimensional drawings for vertical and horizontal exhaust roof curbs.

Energy Recovery Option Drawings

Diagrams showing the energy recovery module and its integration.

Ventilation

Belt Tension and Pulley Maintenance

Procedures for checking and adjusting fan belt tension and pulleys.

Airflow Balancing and Filter Management

Methods for balancing airflow, setting fan speed, and filter maintenance.

Fanstart Configuration

Configuration and setup for the fan motor starter.

Heating Options

Hot Water Coil Connections and Protection

Connecting the hot water coil system and measures for freeze protection.

Electric Heater Details

Details on electric heater options, specifications, and installation.

Gas Burner Installation and Operation

Installation, startup, and operation procedures for gas burners.

Modulating Gas Burner Operation

Operation and adjustment procedures for modulating gas burners.

Climatic Controller

Wiring Connections

Guidelines for connecting the Climatic 50 controller, sensors, and displays.

Customized InputOutput Configuration

Configuring custom inputs and outputs for unit remote control.

Scheduling and Clock Settings

Setting up time zones, schedules, and clock for unit operation.

Display Interface and Addressing

User interface overview and configuration for DC50/DM50 displays.

BMS Address Tables

Modbus, Trend, BACnet & Carel addressing information.

Error Codes

List of error codes and their meanings for the Climatic controller.

Principle Sketches

Refrigerant Circuit Diagrams

Schematic diagrams illustrating refrigerant circuits for various models.

Hot Water Coil Diagram

Schematic diagram of the hot water coil system.

Maintenance Diagnostic

Refrigeration System Troubleshooting

Troubleshooting guide for refrigeration system faults and cut-outs.

Fan and Blower Troubleshooting

Troubleshooting for indoor fan blower and outdoor axial fan issues.

Electric Heater and Water Leak Troubleshooting

Troubleshooting guide for electric heater faults and water leaks.

Controller Display Troubleshooting

Troubleshooting display and communication problems for DC50/DS50.

Maintenance Plan

Filter and Oil Level Checks

Procedures for filter maintenance and checking compressor oil levels.

Belt, Pulley, and Amperage Checks

Maintenance tasks for fan belts, pulleys, and monitoring motor amperage.

Controller and Refrigeration Component Checks

Verifying controller settings and inspecting refrigeration circuit components.

Safety Switch and Valve Checks

Testing safety switches, freeze protection, and valve operations.

Gas Burner and Supply Checks

Verifying gas supply, connections, valve settings, and safety switches.

Warranty

Terms and Conditions

General terms and conditions of the product warranty.

Anti-Corrosion Warranty

Specific warranty terms for the rooftop casing against corrosion.

Certificates

Certification Details

Displays certification details and standards compliance.

Declaration of Conformity

Manufacturer's declaration of product conformity to regulations.

NF Fire Safety Certification

Certification for NF-SSI components related to fire safety.

Smoke Detection Equipment Certification

Certification for smoke detection equipment.

Filter Classification Certificates

Certification related to G4 and F7 filter classifications.

Climaver Material Certification

Certification for Climaver 202 and 274 materials.

Gas Appliance Certification

Gas appliance certification details.

Bureau Veritas Quality Approval

Bureau Veritas quality system approval certificate.

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