This document is an installation manual for the Oxygen 8 Ventum Lite series of Energy Recovery Ventilators (ERVs). It provides essential information for the safe and proper installation of the unit, including technical specifications, wiring diagrams, and safety guidelines.
Function Description:
The Ventum Lite is an Energy Recovery Ventilator (ERV) designed for ceiling-hung horizontal applications. Its primary function is to provide ventilation while recovering energy from the exhaust air to pre-condition the incoming fresh air. This process helps to reduce the energy load on the HVAC system, leading to energy savings. The unit is equipped with fans for supply and return air, and it can be integrated with electric pre-heaters for additional heating capabilities.
Important Technical Specifications:
The manual provides detailed electrical specifications for different models (H04, H08, H12) and configurations, including:
- Voltage: 208/240V, single-phase, 60Hz.
- Motor (kW):
- H04: 0.53 kW
- H08: 0.50 kW
- H12: 0.78 kW
- Fan FLA (Full Load Amps):
- H04: Supply Air (SA) Fan FLA: 3.50 A, Return Air (RA) Fan FLA: 3.50 A
- H08: SA Fan FLA: 2.50 A, RA Fan FLA: 2.50 A
- H12: SA Fan FLA: 3.90 A, RA Fan FLA: 3.90 A
- Total FLA:
- H04: 7.00 A
- H08: 5.00 A
- H12: 7.80 A
- MCA (Minimum Circuit Amps):
- H04: 7.88 A
- H08: 5.63 A
- H12: 8.78 A
- MROPD (Maximum Rating of Overcurrent Protection Device):
- H04: 11.38 A
- H08: 8.13 A
- H12: 12.68 A
- RFS (Recommended Fuse Size): 15A for all models without pre-heater.
Heater Specifications (for models with electric pre-heaters):
The manual details heater capacities and corresponding electrical requirements for various heater variants and airflow settings. For example, for the H04 model at 208/1/60V and 450 CFM airflow:
- Heater Capacity (kW): Ranging from 1 kW to 10 kW.
- Heater FLA: Ranging from 4.81 A (1 kW) to 48.10 A (10 kW).
- Total FLA (including fans and heater): Ranging from 11.81 A (1 kW heater) to 55.10 A (10 kW heater).
- MCA (including fans and heater): Ranging from 14.76 A (1 kW heater) to 68.88 A (10 kW heater).
- MROPD (including fans and heater): Ranging from 17.82 A (1 kW heater) to 115.23 A (10 kW heater).
- Recommended Fuse Size: Ranging from 15A (1 kW heater) to 70A (10 kW heater).
Similar detailed tables are provided for H08 and H12 models with various heater configurations and airflow rates (800 CFM for H08, 1200 CFM for H12).
Physical Specifications (Weights):
- H04: Fan Weight: 27 lbs, Core Weight: 15 lbs, Total Weight: 325 lbs.
- H08: Fan Weight: 29 lbs, Core Weight: 26 lbs, Total Weight: TBD (To Be Determined).
- H12: Fan Weight: 29 lbs, Core Weight: 26 lbs, Total Weight: TBD.
Usage Features:
- Mounting: The Ventum Lite is designed exclusively for ceiling-hung horizontal applications. It comes standard with factory-mounted brackets. The outer brackets have a 1/2" hole designed for a threaded rod to hang the units.
- Access: The unit features bottom swing doors for easy access. The fan and filter can be accessed through the tool-access bottom swing doors. The electrical enclosure is accessible through the RA filter section. The core can be accessed by removing the bottom panel socket screws.
- Lifting: When lifting the unit, care must be taken to lift from the bottom panel to avoid scratching external surfaces.
- Electrical Connections:
- Single-Phase Lite Electrical Hook Up (2 Fans): The manual provides a wiring diagram for single-phase connections, consisting of a single Line, Neutral, and Ground or two hot lines and Ground (Line 1, Line 2, and Ground). It specifies that dual 120V feeds will not work and that the system operates on 1 phase, 3 wire, 240V -10% – +15%, 60Hz.
- Fan Connection - Single Phase: A detailed diagram illustrates the fan body connections, showing terminals for PE, N, L1, and control signals (0-10VDC, GND).
- Wiring Diagram - Ventum Lite 208V, Single Phase: A comprehensive wiring diagram shows the connections for the ERV, including the main disconnect (MD), fan motors (M) for supply and return air, and a terminal block (TB1) for fan control signals (0-10VDC and GND). It differentiates between factory-wired and field-wiring required connections.
- Wiring Diagram - Ventum Lite 208V, Single Phase, SPP Electrical Pre-Heater: An extended wiring diagram is provided for units with a Single Point Power (SPP) electrical pre-heater. It shows the pre-heater's electrical connections (A1, A2) and its integration with the ERV's electrical panel, including additional disconnects (MD1, MD2) and fan motors. The diagram also illustrates the connection of branch power to the fans from the SPP.
Maintenance Features:
- Access for Maintenance: The design with bottom swing doors and removable bottom panel socket screws facilitates access for maintenance tasks such as filter replacement, fan inspection, and core removal.
The manual emphasizes the importance of safety through "Warning" and "Caution" labels:
- Warning: Indicates potentially hazardous situations that could result in death or serious injury if not avoided.
- Caution: Indicates potentially hazardous situations that may result in minor or moderate injury if not avoided, or alerts against unsafe practices.
- Caution (Equipment/Property Damage): Indicates situations that may result in equipment or property damage only accidents.
It stresses that installation must be performed by a qualified and accredited professional in conformance with local and national codes, standards, and licensing requirements, including the National Electric Code (NEC), National Fire Protection Agency (NFPA), and Canadian Electrical Code (CEC). The manufacturer reserves the right to make changes to the technical documentation without prior notification.
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