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Summary of Contents for Vent-Axia Lo-Carbon MULTIVENT MVDC-MS
- Page 1 Lo-Carbon MULTIVENT MVDC-MS & MVDC-MS H VENTILATION SYSTEMS Installation and Wiring Instructions Stock Ref. N° MVDC-MS 437634B MVDC-MS H 443298A 220-240V~50Hz IP22 PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH THE ILLUSTRATIONS. PLEASE SAVE THESE INSTRUCTIONS...
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Page 3: Safety And Guidance Notes
Installation and Wiring Instructions for the Multivent Multi-Speed Extract Fans. IMPORTANT: READ THESE INSTRUCTIONS BEFORE COMMENCING THE INSTALLATION DO NOT install this product in areas where the following may be present or occur: Excessive oil or a grease laden atmosphere. •... -
Page 4: Introductory Notes
LS connection on the power supply terminal block. This must be isolated by using, for example an Isolator Relay Control, Vent-Axia part number 442030, or similar. -
Page 5: Installation
c). Ceiling mounted Installation. See the dimensional details below for the mounting hole positions. -Spigot diameters are 125mm C. INSTALLATION To reduce the system resistance in your duct system, and therefore lower the speed, power consumption and noise of the fan, please follow these instructions: Keep the length of duct runs to a minimum, particularly the exhaust duct run. - Page 6 D. WIRING WARNING: THE MULTIVENT AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER SUPPLY DURING THE INSTALLATION / OR MAINTENANCE. THE MULTIVENT UNIT MUST BE EARTHED. A. MVDC-MS (437634B): 1. Remove the cover by undoing the four screws and lifting it away. 2.
- Page 7 MVDC-MS (437634B) WIRING DIAGRAM To achieve the stated energy efficiency rating with Local Demand Control (LDC), the unit should be used with two sensor and be able to run on all three speeds. An example of how this can be achieved is shown below, the sensors/switches can be chosen based on the installation requirements.
- Page 8 1. Connect an isolated switched live connection to the LS connection on the power supply terminal block. WARNING: THE SWITCHED LIVE CONNECTION TO THE LS CONNECTION MUST BE ISOLATED, FOR EXAMPLE USING AN ISOLATOR RELAY CONTROLLER, VENT-AXIA PART NUMBER 442030 OR SIMILAR.
- Page 9 Wiring the MVDC-MS H using two sensors in combination with the humidity sensor. The arrangement below will allow the use of two sensors (S1 and S2) to trigger the Boost and Purge functions, in addition to the Humidistat triggering Boost. To achieve the stated energy efficiency rating with Local Demand Control (LDC) the arrangement below should be used.
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Page 10: Servicing And Maintenance
E. Commissioning The speed and boost settings are fully adjustable via the potentiometers located on the front of the unit. However, for ease of adjustment during commissioning there are 4 pre-marked settings to assist in speed selection. As marked on the unit, the left hand potentiometer controls the ‘Normal’ speed, the right hand potentiometer controls the ‘Boost’... -
Page 11: Product Fiche
PRODUCT FICHE For Residential Ventilation Units (Complying Commission Delegated Regulation (EU) No 1254/2014) Name: Vent-Axia Vent-Axia MVDC-MS - 437634 - MVDC-MSH - 443298 - Model ID (Stock Ref.) : SEC Class SEC Value ('Average') -27.43 -27.43 SEC Value ('Warm') -11.92 -11.92... - Page 12 Vent-Axia guarantees its products for two years from date of purchase against faulty material or workmanship. In the event of any part being found to be defective, the product will be repaired, or at the Company’s option replaced, without charge, provided that the product:- Has been installed and used in accordance with the instructions given with each unit.
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