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This document is an installation and operation manual for the Oxygen8 Vita HRV (Heat Recovery Ventilator) series. It provides comprehensive instructions for the safe installation, operation, maintenance, and troubleshooting of the unit.
The Oxygen8 Vita HRV is designed to provide fresh air to residential spaces while recovering heat from the exhaust air. It operates as a standalone ventilation system, drawing stale air from areas like bathrooms and kitchens and supplying fresh, tempered air to main living areas. The system is engineered to improve indoor air quality by continuously exchanging indoor air with filtered outdoor air, while minimizing energy loss through its heat recovery core. The manual details various installation configurations, including fully ducted systems, semi-ducted systems, and connections to furnace return air ducts, catering to different residential setups such as houses and high-rise condominiums. It also addresses specific considerations for horizontal and vertical installations, as well as drain connections for condensation management during defrost cycles.
The manual lists components for the Vita 120 Polypropylene Core model, including:
The wiring diagrams illustrate connections for various control options, including timer switches (TC100), wall switches, dehumidistats, time delay switches (TC100-120 & TC100-120P), and master On/Off switches. The control board supports low voltage connections for up to four timer switches and one intermittent switch using three 24 AWG (min.) standard copper wires, with a maximum total wire length of 75ft. The high voltage harnesses and HRV AC power input have a maximum current of 5A. The furnace/fan coil/heat pump interlock relay output is SPDT with a maximum recommended current of 2A, and it is explicitly stated that only low voltage class 2 circuits should be connected to these terminals.
Airflow balancing is a critical aspect, with methods described for both Pitot tube airflow balancing and airflow balancing in ducts. The duct diameter and cross-sectional area are provided for 5" (0.136 sq. ft.) and 6" (0.196 sq. ft.) ducts, along with corresponding velocity pressure (ΔP") and CFM values for balancing.
The HRV unit is designed for residential use only and must be grounded. It is not suitable for commercial purposes or for exhausting combustion/dilution air from fuel-burning appliances. The unit should not be installed in a cooking area. The control board allows for easy wiring connections for various switches without needing to access the electrical box. Optional accessories like timer switches, wall switches, and dehumidistats can be integrated for enhanced control. The manual emphasizes the importance of proper installation, including ensuring the unit is leveled to prevent defrost issues and frost accumulation in winter. It also recommends that the furnace blower run continuously or that the HRV operation be interlocked with the furnace blower for even fresh air distribution throughout the house. A backdraft damper is required in the exhaust air duct to prevent outdoor air from entering the unit when the furnace/air handler is running and the HRV is in standby, off, or recirculation mode. For high-rise condominiums, fresh air intake should be installed on the Fan-Coil supply side (HRV station #2), and the HRV should be interlocked with the Fan-Coil unit. Balancing boxes with air filters are recommended for auto-balancing units to prevent dust build-up on airflow sensors.
The manual outlines both regular and annual maintenance procedures to ensure optimal performance and longevity of the HRV unit.
The manual includes crucial safety instructions, emphasizing that installation and electrical wiring must be performed by a qualified person in accordance with all municipal and national electrical codes. Users are warned to disconnect the power supply before opening the unit or performing any servicing/cleaning to prevent electric shock or injury from moving parts. It is recommended to wear safety glasses and gloves during installation, servicing, or cleaning. The use of metal ductwork is specified to reduce fire risk. The unit should be turned off during construction or repair to avoid filter blockage, and exhaust air should not be directed into walls, crawl spaces, garages, or attics.
General| Brand | Oxygen 8 |
|---|---|
| Model | VITA HRV |
| Category | Laboratory Equipment |
| Language | English |
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