Air Change ERV-IC ECP

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Summary

Introduction and Overview

Safety Considerations and Warnings

Critical safety instructions for installation, service, and use to prevent injury or damage.

Installer Notes and Guidance

Guidance for qualified personnel on installation, servicing, and safety precautions.

Inspection and Unpacking Procedures

Procedures for checking the unit for damage upon delivery and verifying specifications.

Unit Handling and Lifting Instructions

Instructions for safe handling, moving, and lifting of the unit, emphasizing caution.

Installation Guide

Installation Location Selection

Guidance on selecting an appropriate site for the unit, considering airflow and heat sources.

Unit Installation Steps

Steps and considerations for physically mounting and securing the unit, including clearance.

Electrical Connection Requirements

Details on mains power supply requirements, fusing, and electrical connection precautions.

Ducting Installation and Sizing

Instructions for fitting ducts to air inlets/outlets and considerations for duct sizing.

System Components Overview

Cabinet Construction Details

Description of the unit's construction, materials, and insulation.

Fan Specifications

Information on the type of supply and exhaust fans used in the unit.

Heat Exchanger Types

Details on the air-to-air heat exchanger formats and energy reclaim capabilities.

Filter Details and Types

Information on internal panel filters for air intake and return air, and filter sizing.

Technical Specifications

Dimensional and Schematic Data

Reference to separate diagrams for unit dimensions and specifications.

Electrical Connection Diagrams

Reference to separate diagrams for electrical connection details.

Service and Maintenance

Heat Exchanger Maintenance

Instructions for cleaning and maintaining enthalpy heat exchangers, with safety warnings.

Fan and Filter Access Points

Guidance on accessing fans and filters for maintenance, with safety precautions.

Scheduled Maintenance Tasks

Recommended schedule for monthly, three-monthly, and annual maintenance tasks.

Warranty Information and Policy

Warranty Claim Procedure

Form for submitting warranty claims, including project details, problem description, and contact information.

Service Record Log

Section to record service dates, contractor details, and specific service performed for warranty.

Warranty Policy Terms

Detailed policy outlining warranty applicability, parts warranty, labour warranty, and conditions.

This document is the Installation and Maintenance Manual for the Air Change In-Ceiling Energy Recovery Ventilator with EC Plug Fans, specifically the ERV-IC ECP model, version 2021.

The primary function of the ERV-IC ECP unit is to deliver pre-conditioned fresh air by transferring energy from stale return air that has already been air-conditioned. This process helps to reduce the energy load on the main air conditioning system. The unit is designed for internal installation and is not weather-proof.

Important Technical Specifications:

Power Supply:
- Models ERV-IC 200-ECP and 400-ECP require a 240V, 1 phase, 50Hz power supply.
- Models ERV-IC 600-ECP, 900-ECP, and 1200-ECP require a 415V, 3 phase, 50Hz power supply.
- The power supply must be rated within the manufacturer's tolerances.
Heat Exchanger: The unit incorporates an Air Change Enthalpy Heat Exchanger.
- The Energy Reclaim (enthalpy) counter flow enthalpy heat exchanger is designed to reclaim up to 75% of the energy (under normal operating conditions) from the space return/relief air to outside air, pre-treating the outside air. This results in a saving of up to 75% on the cost of heating or cooling the outdoor air.
- The Heat Reclaim (sensible) counter flow heat exchanger can reclaim up to 80% of the heat (under normal operating conditions) from the space return/relief air to outside air, pre-treating the outside air. This results in a saving of up to 80% on the cost of heating or cooling the outdoor air.
- The heat exchanger media is a brown paper-based enthalpy exchange media between plates.
Fans: The unit uses backward curved EC plug fans for both supply and exhaust air.
Cabinet: The cabinet panels are constructed of 1.2mm galvanised sheet metal, bonded to 12mm polyurethane film faced insulation.
Filters: Air Change ERV-IC ECP units incorporate internal panel filters for both the outdoor air and the return air. Specific duct sizes for filters are detailed in separate unit drawings.
Ducting: Ducts should be fitted to the Supply Air, Exhaust Air, Return Air, and Fresh Air inlet. Minimum sized ducting for the supplied spigots should be used. Acoustic, insulated spiral ducting is preferred for quietness and performance. Adequate length of straight duct between elbow and fan inlet should be provided or turning vanes used in the elbow to reduce losses due to fan system effect.
Inlet/Outlet Precautions:
- The exhaust discharge should be ducted to outside and directed away from open windows.
- Fresh-Air inlets must adhere to Australian Standards 1668.2 Code.
- The Fresh-Air intake should be positioned clear of obstructions and polluted air sources (e.g., other units, exhaust fans, kitchen/toilet exhausts).
- A weather shelter should be fitted to the Fresh-Air inlet, and inlet and exhaust points should be a minimum of 6m apart.

Usage Features:

Pre-conditioned Fresh Air: The unit's core function is to provide pre-conditioned fresh air, reducing the energy load on the main HVAC system by recovering energy from the exhaust air.
Internal Installation: Designed for internal use, the unit is not weather-proof.
Location Considerations: The unit should be located centrally or close to the point of use to minimise ductwork runs. It should also be positioned away from heat sources that could affect return air, such as frequently opening doors to the exterior or major heat-generating sources.
Handing: The unit's inlet and outlet connections allow it to be handed either way, offering flexibility in installation.
Electrical Connection: Mains cables and control circuit wires must be connected according to the wiring diagram and comply with local wiring rules. An external isolator (not supplied) and a suitably sized fuse at the distribution board are recommended for local isolation during service and maintenance.

Maintenance Features:

Easy Maintenance Design: Air Change systems are designed for easy maintenance, utilising high-quality materials and components.
Working Clearance: A 660 mm working clearance is required on the discharge side of the ERV-IC for fan maintenance.
Fan and Filter Access: Fan and filter access is achieved from the underside of the unit.
Maintenance Schedule (General):
- Preventative maintenance programs should be tailored to actual working conditions, location, and hours of usage.
- Regular maintenance is crucial; failure to perform it may invalidate warranty claims. Air Change may request to see maintenance schedules.
Monthly Maintenance Schedules:
- Filters should be inspected frequently after installation to determine the necessary cleaning frequency for the specific location. Regular cleaning/changing of filters is essential for normal operating conditions.
- IMPORTANT: Return and Fresh air filters must be changed/cleaned regularly to ensure unrestricted airflow. Heat exchanger warranty may be voided if filters are not cleaned according to the maintenance schedule and if proper filtration standards are not adhered to.
Three-Monthly Checks:
- Check all cabinet panels for correct fitting, alignment, and seals. Clean the cabinet as required and ensure no insulation has detached.
- Check all electrical terminals for tension with the main switch off.
Annual Maintenance:
- Repeat monthly and three-monthly checks.
- Measure and record the amperage of each motor against nameplate details.
Unit Inspection (HVAC Cleanliness): Recommended intervals for HVAC cleanliness inspection are provided based on classification:
- Air Handling Unit: Industrial (1 Year), Residential (1 Year), Light Commercial (1 Year), Commercial (1 Year), Healthcare (1 Year).
- Fresh-Air/Supply Ductwork: Industrial (2 Years), Residential (2 Years), Light Commercial (2 Years), Commercial (2 Years), Healthcare (1 Year).
- Return/Exhaust Ductwork: Industrial (2 Years), Residential (2 Years), Light Commercial (2 Years), Commercial (2 Years), Healthcare (1 Year).
- (Source: ACR 2002 Assessment, Cleaning and Restoration of HVAC Systems)
Heat Exchanger Maintenance:
- WARNING: Always disconnect power supply and switch off the unit before attempting to remove parts for cleaning.
- IMPORTANT: DO NOT WASH THE ENTHALPY HEAT EXCHANGER. The brown paper-based enthalpy exchange media can be vacuumed or brushed gently.
- IMPORTANT: DO NOT ATTEMPT TO CHANGE THE LENGTH OF THE HEAT EXCHANGER BY REMOVING END PLATES AND PLASTIC PLATES. Tampering can dislodge the media, causing performance issues or damage, and will invalidate the warranty.
Warranty: The warranty policy outlines conditions for parts and labour warranties, including requirements for proper installation, operation, servicing, and claims procedures. Regular maintenance by a licensed and reputable refrigeration company is a prerequisite for valid warranty claims.