Table of Contents
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C L E A N • F R E S H • A I R
OPERATION AND
INSTALLATION MANUAL
For Models:
500DCS
ControlAir 15
850FD/DD
Analog Controls
700FD/DD
Analog Controls
1200FD/DD
500ERV
ControlAir 15
700ERV
Analog Controls
1200ERV
Analog Controls
TO BE COMPLETED BY CONTRACTOR AFTER INSTALLATION
Installation Date
Analog Controls
Installing Contractor
Telephone / Contact
Serial Number
NOTE: ALTHOUGH SOME MODELS
DIFFER IN OPERATION, THE BASIC
STEPS ARE SIMILAR.
CAUTION
Before installation, careful consideration must be given to
how the system will operate if connected to any other piece
of mechanical equipment, i.e. a forced air furnace or air
handler, operating at a higher static. After installation, the
compatibility of the two pieces of equipment must be
confirmed, by measuring the airflow's of the Heat/Energy
Recovery Ventilator (HRV/ERV), by using the balancing
procedure in this manual.
It is always important to assess how the operation of any
HRV/ERV may interact with vented combustion equipment
(ie. Gas Furnaces, Oil Furnaces, Wood Stoves, etc.).
NEVER install an HRV/ERV in a situation where its normal
operation, lack of operation or partial failure may result
in the backdrafting or improper functioning of vented
combustion equipment!!!
Model
* LEAVE FOR HOMEOWNER
NOTE: Due to ongoing research and product development, specifications,
ratings and dimensions are subject to change without notice.
®
TI-72C-NE
0105
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Table of Contents
Related Manuals for Lifebreath 500DCS
Summarization of Contents
Understanding HRV and ERV Technology
HRV vs. ERV Differences
Explains the functional distinction between Heat and Energy Recovery Ventilators.
Enthalpy and its Meaning
Defines enthalpy as the total energy content of air, including sensible and latent heat.
ERVs in Cold Climates
Warns against ERV use in cold climates due to potential moisture issues and mold growth.
ERVs in Humid Climates
Recommends ERVs for warm, humid areas to reduce AC load by transferring moisture.
Summer Cooling Benefits
Details how ERVs reduce AC workload by pre-cooling and dehumidifying incoming air in summer.
Fixed Plate Core Features
Lists advantages of fixed plate cores like easy maintenance, flexibility, and low cross-leakage.
Core Maintenance and Filters
Advises on cleaning cores and the necessity of air filters to prevent clogging.
Ventilation Needs and Operation
Guides on when and how much ventilation is needed, suggesting continuous operation when occupied.
Sizing HRV/ERV Units
Commercial & Institutional Sizing
Provides ASHRAE ventilation standards for various commercial and institutional spaces.
Model Specific Technical Details
Key Specifications by Model
Details cores, motors, filters, blowers, and duct sizes for various models.
Performance Characteristics
Presents airflow curves and temperature effectiveness data for different models.
Dimensional Data and Mounting
Provides unit dimensions and general mounting guidelines across models.
Available Options and Warranty
Lists optional controls and accessories, along with warranty terms.
Installation Site and Ductwork System
Mounting Location Requirements
Specifies conditioned space, level mounting, clearance, and drain line considerations.
Ductwork Design Principles
Emphasizes short, straight, insulated, and sealed ducting for optimal efficiency.
Ducting and Air Intake/Return Systems
Weatherhoods and External Ducting
Covers weatherhood design, bird screens, and external duct material/sealing.
Internal Ducting and Airflow
Advises on short runs, preferred elbows, and minimizing airflow losses.
Stale Air Return Strategies
Discusses return air point placement, HVAC integration, and exhaust grille location.
Air Supply and HVAC Integration
Fresh Air Supply Connection
Details connecting fresh air supply to HVAC return ducts and safety considerations.
Integrated HVAC System Diagrams
Illustrates HRV/ERV integration with HVAC systems via diagrams (Fig A/B).
Supply Air Grille Placement
Recommends placement for supply air grilles to ensure occupant comfort.
Balancing and Airflow Control
Emphasizes using dampers or grilles for balanced airflow distribution.
Various Installation Types
Saddle Installation Method
Describes hanging the unit with suspended rods and U channel members.
Suspended Installation Method
Details suspending the unit using polyester reinforced PVC support straps.
Curb Mounted Installation
Explains mounting the unit on a wooden or metal curb assembly for proper slope and height.
Electrical Connections
General Electrical Requirements
Recommends a licensed electrician, proper grounding, and a dedicated 15A/120V circuit.
Fan Defrost Operation
Explains the automatic fan defrost cycle for removing frost from the heat exchanger core.
Damper Defrost Operation
Describes the damper defrost mechanism that redirects airflow to clear the core.
Self Test of Defrost Systems
Provides steps to manually simulate a defrost cycle for testing.
Unit Speed Control and Remote Options
3-Speed Control and Wiring
Explains the 3-speed control, on/off switch, and terminal strip for remote functions.
Remote Control Capabilities
Details wiring for remote on/off and speed selection using switches.
Optional Remote Control Devices
Lists Dehumidistat Ventilation Control, Dehumidistat, and 60 Minute Crank Timer.
ControlAir 15 Remote Control Options
Programmable Ventilation Controller (PVC)
Advanced digital remote with timer, dehumidistat, fan control, and Air Sentry.
Air Sentry™ Air Quality Sensor
Digital monitor increasing ventilation based on detected gases like smoke and formaldehyde.
Ventilation Dehumidistat and Timer
Covers dehumidistat for humidity override and electronic timer for specific rooms.
Control Pad and Module Functionality
Explains wiring to the control module and remote pad mounting options.
ControlAir 15 Operation and Defrost Features
Unit Operation and Self-Test
Covers unit energization, self-test, default speed, and mode selection.
Remote Control Pad Installation
Details removing and remotely mounting the control pad.
Automatic Defrost System Explained
Describes the microprocessor-controlled defrost cycle and its operation.
Key Control Terminology Glossary
Defines terms like Defrost Mode, Dehumidistat, Reset, Standby, and Thermistor.
ControlAir 15 Mode and Speed Selection
Selecting Operating Modes
Explains how to cycle through OFF, Standby/On, and 20 On/40 Off modes.
LED Indicator Guide
Details the LED indicators for each operating mode and speed selection.
Selecting Fan Speed Levels
Describes how to advance through speeds 1-5 using the fan selection button.
Automatic Defrost Indication
Notes that a flashing Red LED indicates the automatic defrost function.
Air Flow Balancing with Pitot Tube
Balancing Importance and Prerequisites
Stresses balanced airflows for performance and lists necessary pre-balancing checks.
Field Balancing Procedure
Details using a Pitot tube and gauge to measure and adjust airflow in ducts.
Duct Preparation and Measurement
Covers drilling holes in ducts and calculating airflow based on readings and duct size.
HRV/ERV Service and Core Maintenance
Routine Servicing Importance
Regular servicing ensures optimal efficiency and prolongs equipment life.
Motor Lubrication Procedure
Describes PSC motor lubrication via oil wicks, advising yearly oiling.
HRV and ERV Core Cleaning
Guides on careful removal and cleaning of HRV/ERV cores using appropriate methods.
Core Removal and Reinstallation
Provides instructions for safely removing and reinstalling the heat exchanger core.
Component Maintenance: Filters, Drains & General
Filter Cleaning and Service Frequency
Details accessing, cleaning, and recommended service intervals for filters.
Condensate Drain System Care
Advises on flushing drain pans and lines to prevent blockages and bacterial growth.
Ductwork, Exterior & General Cleaning
Recommends inspecting ducts, hoods, grilles, and wiping cabinet interiors.
Damper Motor Lubrication
Suggests occasional lubrication for the damper motor shaft.
Troubleshooting Common HRV/ERV Issues
Air Flow and Temperature Problems
Addresses poor air flow, cold supply air, and related causes/solutions.
Humidity and Condensation Issues
Covers dehumidistat problems, high/low humidity, and condensation causes.
Frosting, Ice, and Water Issues
Discusses frost buildup, duct condensation, and water in the unit from drain problems.
500 Damper Defrost Wiring Diagram
Microprocessor and Motor Connections
Details connections to the processor board, fan motors, and capacitors.
Defrost, Control, and Power Wiring
Illustrates wiring for defrost controls, ControlAir 15, and power supply.
Auto-Transformer and Relay Wiring
Depicts wiring for the auto-transformer and various relays.
Wiring Legend and Notes
Provides a legend for wire colors, voltage levels, and important connection notes.
700/850/1200 Fan Defrost Wiring Diagram
Sensor, Timer, and Power Wiring
Shows connections for temperature sensor, defrost timer, and power supply.
Relay and Control Switch Wiring
Details wiring for 120V/24V relays and control switches.
Fan Motor and Capacitor Connections
Illustrates wiring for the fan motors and their capacitors.
Terminal Block and Color Coding
Explains terminal block layout and wire color coding for identification.
700/850/1200 Damper Defrost Wiring Diagram
Damper Motor, Sensor, and Timer Wiring
Details connections for damper motor, temperature sensor, and defrost timer.
Power Supply and Control Circuitry
Shows wiring for power, transformer, relays, and control switches.
Fan Motor and Capacitor Wiring
Illustrates wiring for the fan motors and their capacitors.
Terminal Block and Switch Connections
Depicts terminal block layout and connections for control switches.
Commercial Lifebreath Warranty Policy
Limited Warranty Coverage
Details 2-year limited, 15-year aluminum core, and 5-year paper core warranties.
Warranty Exclusions and Conditions
Lists damages not covered, including acts of God, misuse, and improper maintenance.
Making a Warranty Claim
Instructs contacting NUTECH or a dealer for service and clarifies labor responsibilities.
Warranty Registration Fields
Fields for Model No., Serial No., Installer, and Date for product registration.
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