Vent-Axia Lo-Carbon VA100 SELV Series Assembly instructions

100mm AXIAL EXTRACT FAN
Installation and Wiring Instructions
Stock Ref. N°
44 16 14A - LP
45 90 49A - XP
44 16 15A - LT
45 90 50A - XT
44 16 16A - LHTP
43 60 64A - XHTP
PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH ILLUSTRATIONS.
PLEASE SAVE THESE INSTRUCTIONS.
VA100
Lo-Carbon SELV
RANGE
IPX7
FAN UNITS 12V DC SELV (CLASS III)
CONTROLLERS 220-240V 50Hz MAINS SUPPLY (CLASS II)
WITH 12V DC SELV OUTPUT

Installation and Wiring Instructions for the VA100 Lo-Carbon SELV Range of
Extractor 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.
•Corrosive or flammable gases, liquids or vapours.
• Ambient temperatures higher than 40°C or less than –5°C.
• Possible obstructions which would hinder the access or removal of the Fan.
SAFETY AND GUIDANCE NOTES
A. All wiring to be in accordance with the current I.E.E. Regulations, or the
appropriate standards of your country and MUST be installed by a suitably
qualified person.
B. The Fan should be provided with a local isolator switch capable of disconnecting
all poles, having a contact separation of at least 3mm.
C. Ensure that the mains supply (Voltage, Frequency, and Phase) complies with the
rating label.
D. The Fan should only be used in conjunction with the appropriate Vent-Axia
products.
E. The fan should only be used in conjunction with fixed wiring.
F. When the Fan is used to remove air from a room containing a fuel-burning
appliance, ensure that the air replacement is adequate for both the fan and the
fuel-burning appliance.
G. The Fan should not be used where it is liable to be subject to direct water spray
for prolonged periods of time.
H. Where ducted Fans are used to handle moisture-laden air, a condensation trap
should be fitted. Horizontal ducts should be arranged to slope slightly downwards
away from the Fan.
I. This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
J. Children should be supervised to ensure that they do not play with the appliance.
K. Stationary appliances not fitted with means for disconnection from the supply
mains having a contact separation in all poles that provide full disconnection
under over voltage category III, the instructions state that means for
disconnection must be incorporated in the fixed wiring in accordance with the
wiring rules.
IMPORTANT:- ONLY CONNECT TOGETHER PRODUCTS FROM THE VA100 LO-
CARBON SELV RANGE SINCE THE FANS ARE SPECIALLY DESIGNED TO WORK
ON 12V DC AND ARE NOT COMPATIBLE WITH OTHER VENT-AXIA
CONTROLLERS. DO NOT CONNECT MORE THAN ONE FAN TO THE
CONTROLLER.

DESCRIPTION
The VA100 Lo-Carbon SELV fan is an axial extraction fan suitable for domestic
bathrooms and WC’s and is with shutter timer and humidity combinations. The fan
can be wall, panel/ceiling or window mounted using the appropriate ducting/grille
kit (see Accessories section below).
Long life ball bearing DC motor with anti-vibration mounts provides low noise
transmission into plasterboard/panels for quiet operation compared with other DC
motor based fans.
ACCESSORIES (not supplied) Please see www.vent-axia.com for more
information.
WALL FITTING KIT
A range of 100mm wall kits are available for installing into most walls using
telescopic liners supplied. White stock ref.: 254102, Brown stock ref: 254100.
WINDOW FITTING KIT
Two window kits are available, for existing 105-110mm diameter holes use stock
ref. 254101A. For 110-140mm holes use stock ref. 443234.
A. INSTALLATION
SITING THE CONTROLLER
1. The controller must not be installed in a shower cubicle or enclosure. It must
be sited away from direct sources of water spray and out of reach (1.5m) of
a person using a fixed bath or shower.
2. Site away from direct sources of heat. Ambient temperature range 0 to
40ºC. Do not site in an area containing excessive levels of grease.
3. Decide where to site the controller and fan (see section siting the fan), and
work out the required cable runs.
PANEL/CEILING MOUNTING
1. For panel/ceiling mounting the fan should be installed into a closed duct
system of at least 1.2m long (max 3m) or protected by an exterior air grille
that must comply with the standard requirements of your country to prevent
access to the fans impeller.
2. Cut a 105mm diameter hole.
3. Loosen the screw at the bottom of the grille and remove the grille. Mark the
screw centres through the holes in the fan back plate. Drill, plug and screw
into position.
4. Attach ducting as required for the installation.
5. Wire the fan as described in Section B-Wiring. Adjust any settings as
required (see Section C-Setup).
6. Replace the grille and tighten the retaining screw.
7. After installation, ensure impeller rotates freely and the shutters can open.

WALL MOUNTING (WALL KIT SUPPLIED SEPARATELY – SEE ACCESSORIES ON PREVIOUS PAGE)
1. For wall mounting cut a 117mm diameter hole through the wall and insert
the wall sleeve. Slope the sleeve slightly downwards away from the fan. Cut
to length and cement both ends into position flush with the wall faces.
2. Loosen the screw in the bottom of the grille and remove the front grille. Mark
the screw centres through the holes in the fan back plate. Drill, plug and
screw into position. Fix exterior grille into position with the louvres positioned
downwards. (Note:- The grille must comply with the standard requirements
of your country to prevent access to the fans impeller)
3. Wire the fan as described in Section B-Wiring. Adjust any settings as
required (see Section C-Setup).
4. Replace the grille and tighten the retaining screw.
5. After installation, ensure impeller rotates freely and the shutters can open.
WINDOW MOUNTING (WINDOW KIT SUPPLIED SEPARATELY – SEE ACCESSORIES ABOVE)
The following instructions are for 105-110mm holes only – using the
254101A window mounting kit. For 110-140mm holes please use
443234 window kit and refer to the supplied instructions.
1. Cut a 105mm diameter hole in the glass.
2. Fit spacers as required behind the fan back plate, engaging the locating pips
in the corner holes.
3. Place the fan spigot through the hole in the glass from the inside, with a
gasket on each side of the glass.
4. From the outside, place on the remaining spacer, with the locating pips
facing outwards. For double-glazing and materials up to 40mm thick, one or
more spacers may be discarded.
5. Draw the assembly together with the threaded fixing ring. Do not over-
tighten.
6. Fix the exterior grille in position, using the screws provided, with the louvres
pointing downwards.
AFTER INSTALLATION ENSURE IMPELLER ROTATES FREELY
B. WIRING.
WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE
ISOLATED FROM THE POWER SUPPLY DURING THE INSTALLATION / OR
MAINTENANCE.
IMPORTANT: The Controller MUST be surface mounted to allow air to freely
circulate around the unit. When installed in a loft void it MUST NOT be enclosed
or covered with insulation.
There are two methods of cable entry to the fan. If the side cable entry option is
used, ensure the supplied grommet is used and maintains a good seal to prevent
water ingress.
The fan must be powered at all times to allow the shutter to work correctly. If there
is a requirement to switch the fan via an external switch, this should be connected
to the LS connection and not by switching L/N supply.

1. Select and follow the appropriate wiring diagram. (Fig. 2 or 3)
2. Check all connections have been made correctly and ensure all terminal
connections and cable clamps are securely fastened.
3. Ensure the impeller rotates and is free from obstructions.
4. DO NOT TEST THE FAN WITHOUT THE GRILLE SECURELY FASTENED.
THIS COULD POTENTIALLY CAUSE DAMAGE TO THE SHUTTER
MECHANISM.
C. SETUP
WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT
MUST BE ISOLATED FROM THE POWER SUPPLY DURING THE
INSTALLATION / OR MAINTENANCE.
SPEED SETTING (Fig. 4):
The fan has two speed settings for different installation requirements:
1) High speed – for ducted installations: Replace jumper.
2) Normal speed – for wall/window installations: Remove jumper.
TIMER ADJUSTMENT (LT/XT/LHTP/XHTP MODELS)
BEFORE ADJUSTING THE TIMER, SWITCH OFF THE MAINS SUPPLY. TIMER
SHOULD ONLY BE ADJUSTED BEFORE OR DURING INSTALLATION.
1. Remove the fan grille. The controller is factory set at 15 minutes
approx. The overrun time period can be adjusted from approximately
3-30 minutes by altering the adjuster on the control PCB.
2. To REDUCE the operating time, use a small screwdriver to turn the
adjuster Fig.4. ANTI-CLOCKWISE.
3. To INCREASE the operating time, use a small screwdriver to turn the
adjuster Fig.4. CLOCKWISE.
4. Replace the fan grille.
HUMIDITY SET-POINT ADJUSTMENT (LHTP/XHTP MODELS ONLY)
BEFORE ADJUSTING THE CONTROLLER, SWITCH OFF THE MAINS SUPPLY.
HUMIDISTAT SHOULD ONLY BE ADJUSTED BEFORE OR DURING
INSTALLATION.
1. Remove the fan grille. The controller is factory set to switch on at
about 70% RH. The humidity set point can be adjusted from 65-
95%RH by altering the adjuster on the control PCB.
2. To LOWER the set-point use a small screwdriver to turn the adjuster
Fig.4. ANTI-CLOCKWISE. This makes the controller MORE sensitive.
3. To RAISE the set-point use a small screwdriver to turn the adjuster
Fig.4. CLOCKWISE. This makes the controller LESS sensitive.
4. Replace the fan grille.

IMPORTANT: Upon installation it is possible that the humidity controller will make
the fan run continuously until it has acclimatised to the environment. As part of the
installation process it is important to set/adjust the humidity sensitivity to the
desired position. The controller is already factory set to switch on at about 70%
R.H. If the room has not had a fan correctly working for sometime, the fan may run
continuously for 2 or more weeks until the humidity drops below 70%RH.
PULLCORD OPERATION (LP/XP, LHTP/XHTP)
The PULLCORD will activate the fan when switched. For the HTP models, the fan
will return to the auto humidity sensing mode once the pullcord is switched into the
off position. The LED indicator light will only activate if the PULLCORD is in the
ON position.
LED INDICATOR LIGHT OPERATION
The Neon will activate whenever the LS or PULLCORD is activated. The LED
indicator light will switch off if the fan is running in Timer overrun or Humidity mode
(if applicable).
D. SERVICING AND MAINTENANCE.
WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT
MUST BE ISOLATED FROM THE POWER SUPPLY DURING
MAINTENANCE.
1. At intervals appropriate to the installation, the fan should be inspected and
cleaned to ensure there is no build up of dirt or other deposits.
2. Wipe the inlets and front face with a damp cloth until clean.
The fan has sealed for life bearings, which do not require lubrication.

Fig.3 Models: LT/XT, LHTP/XHTP
Fig.2 Models: LP/XP (LHTP/XHTP – if the Timer is not used)
Fig.1.
 
~
N
L
1 Phase Supply
(220-240V 50Hz). FUSE
Switched
Fused Spur
(3A)
LS
12V 0V
Controller
Fan
12V D.C
SELV Supply
NL
LS
LS
N
L
2
1
3
~N
LS12V 0V
Controller
Fan
12V D.C
SELV Supply
NL
LS
LS
N
L
2
1
3

Fig.4.
Humidistat set point adjustment (65-95%RH)
- +
Overrun timer adjustment (1-30min)
- +
SPEED SETTING:
The fan has two speed settings for different
installation requirements:
High speed – for ducted installations:
Replace jumper.
Normal speed – for wall/window
installations: Remove jumper.

PRODUCT FICHE
For Residential Ventilation Units (Complying Commission Delegated Regulation (EU)
No 1254/2014
Name:Vent‐AxiaVent‐AxiaVent‐AxiaVent‐AxiaVent‐AxiaVent‐AxiaVent‐Axia
ModelID(StockRef.):
Lo‐Carbon
VA100SELV
LP‐441614
Lo‐Carbon
VA100SELV
XP‐459049
Lo‐Carbon
VA100SELV
LT‐441615
Lo‐Carbon
VA100SELV
LHTP‐
441616
Lo‐Carbon
VA100SELV
XT459050
Lo‐Carbon
VA100SELV
XHTP‐
436064
SECClassFFECEC
SECValue('Average')‐10.0013.9715.7226.2315.7226.23
SECValue('Warm')‐2.346.327.1111.867.1111.86
SECValue('Cold')‐23.3527.3230.7551.3130.7551.31
LabelRequired?(Yes/No=Outofscope)NoNoNoNoNoNo
Declaredas:RVUorNRVU/UVUorBVURVU‐UVURVU‐UVURVU‐UVURVU‐UVURVU‐UVURVU‐UVU
SpeedDrive2‐Speed2‐Speed2‐Speed2‐Speed2‐Speed2‐Speed
TypeHRS(Recuperative,Regenerative,None)NoneNoneNoneNoneNoneNone
ThermalEff:[(%),NA(ifnone)]N/AN/AN/AN/AN/AN/A
Max.FlowRate(m3/h)75.6075.6075.6075.6075.6075.60
Max.PowerInput(W):(@Max.FlowRate)6.106.106.106.106.106.10
LWA:SoundPowerLevel(dB)53.5253.5253.5253.5253.5253.52
Ref.FlowRate(m3/s)0.010.010.010.010.010.01
Ref.PressureDiff.(Pa)N/AN/AN/AN/AN/AN/A
SPI[W/(m3/h)]0.120.120.120.120.120.12
ControlFactor&ControlTypology:(CTRL/
Typology)     
ControlFactor;CTRL1.001.000.950.650.950.65
ControlTypologyManual
Control
Manual
ControlClockControlLocalDemand
ControlClockControlLocalDemand
Control
Declared:‐MaxInternal&ExternalLeakage
Rates(%)forBVUsorcarryover(for
regenerativeheatexchangersonly), 
‐&Ext.LeakageRates(%)forDuctedUVUs;
N/AN/AN/AN/AN/AN/A
MixingRateofNon‐DuctedBVUsnot
intendedtobeequippedwithoneduct
connectiononeithersupplyorextractair
side;
N/AN/AN/AN/AN/AN/A
Positionanddescriptionofvisualfilter
warningforRVUsintendedforusewith
filters,includingtextpointingoutthe
importanceofregularfilterchangesfor
performanceandenergyefficiencyofthe
unit
N/AN/AN/AN/AN/AN/A
ForUVUs(InstructionsInstallRegulated
Supply/ExtractGrillesFaçade)InF&WInF&WInF&WInF&WInF&WInF&W
InternetAddress(forDisassembly
Instructions)
www.vent‐
axia.com
www.vent‐
axia.com
www.vent‐
axia.com
www.vent‐
axia.com
www.vent‐
axia.com
www.vent‐
axia.com
Sensitivityp.Variation@+20/‐20Pa:(for
Non‐DuctedVus)N/AN/AN/AN/AN/AN/A
AirTightness‐ID/OD‐(m3/h)(forNon‐Ducted
Vus)N/AN/AN/AN/AN/AN/A
AnnualElectricityConsumption:AEC(kWh/a)1.591.591.490.951.490.95
AnnualHeatingSaved:AHS(kWh/a) 
AHS:Average13.9713.9715.7226.2315.7226.23
AHS:Warm6.326.327.1111.867.1111.86
AHS:Cold27.3227.3230.7551.3130.7551.31