

|
Model
| Stock Ref No
|
| MV250
| 18 15 10A
|
| MV350
| 18 10 10A
|
| MV250H
| 18 30 10A
|
| MV350H
| 18 30 15A
|
Energy Saving
|
| MVDC
| 18 15 20B
|
| MVDCH
| 18 30 20A
|
|
Multivent Wire-less Controller
For use with MV250H, MV350H & MVDCH version only
| 42 60 35
|
Overview
The Multivent continuous mechanical extract ventilation range is designed for the simultaneous ventilation of separate areas in the home or as a multi-point extractor system for a wide range of commercial applications.
In the home the system is usually located in the loft or airing cupboard with ducts taken to the bathroom, kitchen and utility room to remove water vapour at source and from WC's to remove odours. Designed to provide 0.7 of an air change based on the volume of the building, the Multivent system provides adequate ventilation, even in a 'tight' dwelling. Pollutant concentrations and humidity can be controlled.
The Multivent H versions are now available with 2 control options. An integral humidity sensor that will detect any rise in humidity within the system and will boost between any 2 of the 3 speeds. A new Wire-less Controller is available for use with the Multivent H with 3 speed options offering total control of the systems.
Multivent MV250 and MV350 are guaranteed for 2 years with an extended motor guarantee to 5 years offered on the MVDC LoWatt Energy Saving model.
Installation
Multivent is ideal for a range of commercial multipoint extract applications such as WC’s, fitting rooms, and kiosk's.The units can be installed at any angle and where the ambient air has a high humidity content condensate drains are provided.
Performance



Dimensions (mm)
Weight: 5.50kg
Technical Data

|
|
|------------------- Settings -------------------|
|
|
| Low
| Medium
| High
|
|
| Current Amps
| Power Watts
| Current Amps
| Power Watts
| Current Amps
| Power Watts
|
|
MV250
| 0.2
| 25
| 0.30
| 54
| 0.34
| 81
|
|
MV250H
| 0.2
| 25
| 0.30
| 54
| 0.34
| 81
|
|
MV350
| 0.3
| 29
| 0.39
| 55
| 0.42
| 99
|
|
MV350H
| 0.3
| 29
| 0.39
| 55
| 0.42
| 99
|
|
MVDC
| 0.1
| 13
| 0.23
| 35
| 0.39
| 44
|
| MVDCH
| 0.1
| 13
| 0.23
| 35
| 0.39
| 44
|
Sound Levels

|
| FID
|
|------------- dB(A) @ 3m -------------|
|
|
|
Performance m³/h
| Casing Breakout
| Duct Inlet 100mm Ø
| Duct Inlet 125mm Ø
|
MV250
low
medium
high
| 161 305 443
| 22.4 31.0 35.4
| 27.9 42.9 48.6
|
27.8 43.2 48.0
|
MV250H
low
medium
high
| 175 344 443
| 22.4 31.0 35.4
| 27.9 42.9 48.6
|
27.8 43.2 48.0
|
MV350
low
medium
high
| 173 317 473
| 21.3 30.8 37.0
| 26.7 39.9 49.3
|
27.6 41.2 51.5
|
MV350H
low
medium
high
| 173 317 473
| 21.3 30.8 37.0
| 26.7 39.9 49.3
|
27.6 41.2 51.5
|
MVDC
low
medium
high
| 232 365 434
| 33.3 33.7 38.8
| 36.3 47.9 51.7
|
36.5 47.0 51.5
|
MVDCH
low
medium
high
| 232 365 434
| 33.3 33.7 38.8
| 36.3 47.9 51.7
|
36.5 47.0 51.5
|
Published dB(A) figures are free field sound levels at 3m with spherical propagation at a reference level of 2 x 10–5 Pa.The free field sound power level spectra figures are dB with reference of 10–12 Watts.
Controllers & Sensors

|
Controller Options
|
|
|
|
|
|
Trickle Boost Switch
| Ambient Response Humidistat
| Visionex PIR
| TIM2
| 7 Day Timeswitch
|
| 42 52 13
| 56 35 50
| 45 96 23
| 37 03 46
| 56 35 15
|
Multivent Installation Packs
Accessory kits for Multivent installations including flexible duct, grilles, diffusers etc.
2 point Extract kit. - Stock Ref. No. 45 52 25
3 point Extract kit. - Stock Ref. No. 45 52 24
4 point Extract kit. - Stock Ref. No. 45 52 23
Typical Specification
Supply and install a Multivent Wholehouse Central Extract unit for wholehouse condensation control as manufactured by:
Vent-Axia Clean Air Systems
Fleming Way
Crawley
West Sussex
RH10 9YX
| Performance:
| m³/h
| l/s
| | Max ventilation rate
|
|
| | MV250 & MV250H
| 443
| 123.06
| | MV350 & MV350H
| 473
| 131.39
| | MVDC & MVDCH
| 434
| 120.56
| | N° speed settings
| 3
|
|
Motor: The AC version should be a capacitor run external rotor motor capable of 3 fixed speeds. 240V 50Hz A/C with ball race bearings, greased for life. It shall operate up to an ambient temperature of 40°C and be fitted with a one shot thermal overload protective device.
The DC version should be an efficient brushless LoWatt Energy Saving DC motor with ball race bearings.
Fan: The impeller should be a centrifugal backward curved type, dynamically balanced mounted directly onto the motor.
Ducting spigots: Ducting spigots: The unit should have 4-N° 100/125mm Ø extract points and 1x125mm outlet to atmosphere. (Can be converted to flat ducting).
Filter: not fitted.
Condensation: Two 15mm condensate drain outlets on the side of the unit at both the top and the bottom for different mounting positions.
Construction: The unit should be moulded in ABS plastic.
Sound Levels: Refer to above table for maximum performance.
Mains electrical supply: 230VAC 50Hz.
Complies to the following approvals/directives: LVD, EMC, BEAB and CE.
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