Envirovent MEV 300 - User Manual

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Summary

SAFETY AND USER GUIDELINES

ELECTRICAL CONNECTION REGULATIONS

Details on complying with wiring regulations, earthing, and isolation switch requirements for safe electrical connection.

DIAGRAMS AND WIRING

WIRING DIAGRAM EXPLANATION

Detailed illustration and explanation of the unit's electrical connections, including mains supply and control inputs.

CONTROL PANEL FUNCTIONALITY

ACCESSING THE CONTROL PANEL

Instructions on how to access the unit's control panel using basic tools.

INSTALLATION PROCEDURE - PART 1

UNIT PLACEMENT AND INITIAL PREPARATION

INSTALLATION PROCEDURE - PART 2

SPIGOT ATTACHMENT AND MOUNTING

INSTALLATION PROCEDURE - PART 3

INSTALLATION PROCEDURE - PART 4

ELECTRICAL CONNECTIONS AND CONTROL ACCESS

Details on wiring the unit to isolators, connecting controls, and accessing the control panel.

COMMISSIONING PROCEDURE

FLOW RATE ADJUSTMENT AND SETTING

Step-by-step guide to setting boost and trickle airflow rates according to ventilation requirements.

OPERATIONAL FEATURES

HUMIDITY FUNCTION OPERATION

Describes how the unit automatically adjusts fan speed based on detected humidity levels.

BOOST SWITCH AND REMOTE CONTROL

Instructions for activating/deactivating boost via wired switch and pairing/using the wireless remote.

Summary

SAFETY AND USER GUIDELINES

ELECTRICAL CONNECTION REGULATIONS

Details on complying with wiring regulations, earthing, and isolation switch requirements for safe electrical connection.

DIAGRAMS AND WIRING

WIRING DIAGRAM EXPLANATION

Detailed illustration and explanation of the unit's electrical connections, including mains supply and control inputs.

CONTROL PANEL FUNCTIONALITY

ACCESSING THE CONTROL PANEL

Instructions on how to access the unit's control panel using basic tools.

INSTALLATION PROCEDURE - PART 1

UNIT PLACEMENT AND INITIAL PREPARATION

INSTALLATION PROCEDURE - PART 2

SPIGOT ATTACHMENT AND MOUNTING

INSTALLATION PROCEDURE - PART 3

INSTALLATION PROCEDURE - PART 4

ELECTRICAL CONNECTIONS AND CONTROL ACCESS

Details on wiring the unit to isolators, connecting controls, and accessing the control panel.

COMMISSIONING PROCEDURE

FLOW RATE ADJUSTMENT AND SETTING

Step-by-step guide to setting boost and trickle airflow rates according to ventilation requirements.

OPERATIONAL FEATURES

HUMIDITY FUNCTION OPERATION

Describes how the unit automatically adjusts fan speed based on detected humidity levels.

BOOST SWITCH AND REMOTE CONTROL

Instructions for activating/deactivating boost via wired switch and pairing/using the wireless remote.

This document describes the EnviroVent MEV 160 & MEV 300, which are continuous mechanical extract ventilation systems designed to improve indoor air quality by removing humid, stale air from wet rooms and minimizing humidity transfer to other areas. These units are typically installed in a central location, with ductwork extending to the kitchen, bathroom, en-suite, utility, and other wet zones.

Function Description:

The MEV 160 and MEV 300 units operate continuously at a trickle airflow rate. They feature an Intellitrac® humidity tracking function that monitors humidity levels in the extracted air. When humidity rises, the airflow rate automatically increases to boost mode. Once humidity levels decrease, the system reverts to the programmed trickle setting. Both models include a switch live function, which, when engaged, activates boost mode. The units are available with either a wired boost switch or a wireless remote control for manual activation of the boost function.

Important Technical Specifications:

Model Variants: MEV 160 and MEV 300.
Airflow Capacity:
- MEV 160: Maximum airflow of 75 l/s (270 m³/hr).
- MEV 300: Maximum airflow of 103 l/s (370 m³/hr).
System Pressure:
- MEV 160: Maximum system pressure of 573Pa.
- MEV 300: Maximum system pressure of 650Pa.
Power Consumption:
- MEV 160: Maximum 43.5W.
- MEV 300: Maximum 69.5W.
Electrical Supply: 230V Single Phase 50Hz.
Ingress Protection Rating: IPX2.
Spigot Diameter:
- Extract: 125mm or 75/90mm Fast Track.
- Exhaust: 125mm.
Weight:
- Boxed: 6kg.
- Unboxed: 5kg.
Dimensions:
- Length: 480mm.
- Width: 340mm.
- Height: 161mm.
Spigot Positions: The unit offers six possible spigot positions for extracting air from multiple locations. Up to three spigots are included, with additional spigot packs available for purchase if more are needed (up to a maximum of six).

Usage Features:

Installation: The unit should be installed by a competent person in a location with sufficient space for access and future servicing. It must not interfere with open-flue appliances. Ductwork should be rigid where possible, with a short length of flexible duct (300mm) for final connections. Ductwork in unheated spaces must be insulated.
Electrical Connection: Requires a continuous electrical power supply and must be earthed. Connection to fixed wiring should be made outside the unit. A double pole switch with a minimum contact separation of 3.0mm is required for isolation. The supplied flexible power cable must be used.
Commissioning: All building works must be complete before commissioning. Commissioning involves determining required ventilation rates, adjusting airflow settings (boost and trickle) using the control panel, and locking extract valves. The control panel is accessed by unclipping a cap with a flat-head screwdriver.
Control Panel: Features buttons for '+' and '-' adjustments and a 'SET' button. LEDs indicate the current mode: 'A' for Boost, 'B' for Trickle, 'C' for Humidity, and 'D' for Fault.
Hardwired Boost Switch (Standard Units): A black 2-core cable labeled "volt free input" connects to a hardwired boost switch. Moving the switch to the 'on' position activates boost mode; moving it to 'off' returns the unit to normal running mode.
Wireless Remote Control (Wireless Units): Pressing the button on the remote activates boost mode for 20 minutes, indicated by a green LED. Boost mode cannot be cancelled if a switch live connection is active until the switch live is turned off.
Remote Control Pairing: To pair an additional remote, turn the unit off at the isolation point, then restore power. Within 20 seconds of restarting, press the button on the new remote once. A green LED will light up if pairing is successful.
Remote Control Battery Replacement: Requires 1x CR2032 battery. Undo two screws, remove the rear casing, replace the battery (observing polarity), and reassemble. The switch remains paired after battery replacement.

Maintenance Features:

Cleaning: No maintenance is required other than cleaning during the two-year warranty period.
Access for Cleaning: To clean the unit, isolate it from the mains power supply. Undo the four screws around the front cover, use a flat-head screwdriver to lift the three clips along the edge, and gently pull the cover away. Remove any dust and debris from inside the unit.
Extract Valve Filters: Periodically remove dust and debris from any extract valve filters to prevent blockages.
Warranty: The unit is covered by a 2-year warranty. Tampering with internal components (beyond instructed cleaning) will void the warranty. Regular checks of valves are recommended to ensure airflow. For supply and installation by EnviroVent, a parts and labor warranty applies. For supply only, a parts-only warranty applies, provided installation was done by a competent person according to instructions. A receipt is required for proof of purchase.