Envirovent PIV Bedienungsanleitung
Due to our policy of continuous innovation and improvement EnviroVent reserves the right to alter
products specication and appearance without notice.
You are about to install a product that is designed to outlast the life-cycle of the
building. Once installed the unit will operate continuously for 5 years and beyond
without a major service. Please therefore ensure that this product is treated with
care and installed properly i.e. for the life of the building. If the unit is mishandled
you might break it! This invalidates the warranty.
And remember, if you have any problems please call our dedicated Technical
Team. We are always pleased to help and in an emergency will come out to site
quickly, completely free of charge.
HOTLINE: 0345 27 27 810
PIV & MIV®Loft Mounted Unit
PRE-INSTALLATION CHECKLIST
Check that the loft has adequate cross
ow ventilation.
Check that all party walls are intact, seek
advice if the wall is missing or broken.
Check that any ue which passes through
the loft is not damaged, seek advice if the
ue is in a poor state of repair.
Check for any ued appliance which may
draw air from the loft, report to the client.
Check for any holes in the ceilings which
may allow leakage of air to the loft and
repair as appropriate.
Check that the water storage tank is
covered.
FIXING KIT
Description Item
8 X FOAM PADS
4 X PENNY
WASHERS
4 X PLASTER
BOARD PLUGS
4 X WOOD
SCREWS (10 X 1.5)
4 X WOOD
SCREWS (10 X 3)
4 X WOOD
SCREWS (8 X 1)
4 X WOOD
SCREWS (8 X 1.5)
ROLL OF
INSULATION TAPE
02
PIV & MIV®Loft Mounted Unit
INSTALLATION INSTRUCTIONS
IMPORTANT
Be sure to have read and understood these
instructions before beginning the installation
process.
Smoke Detectors
It is important that any open side of the plastic
diuser is not positioned within 1m of a smoke
detector. If the diuser cannot be repositioned,
up to two sides of the diuser may be closed
o using the plastic blanking plate supplied (Loft
only) so that the open sides face a minimum 1.5m
unobstructed path away from the detector. In 3
oor properties a metal re diuser should be
tted at minimum of 1m from the detector (see
page 8).
SAFETY AND RECOMMENDATIONS
• All wiring must comply with Building
Regulations and the current I.E.E. Wiring
Regulations (BS7671) or the equivalent
standards for your country. The nal installation
should be examined and tested by a qualied
electrician.
• Precautions must be taken to avoid the back-
ow of gases into the dwelling from the open
ue of gas or other fuel-burning appliances.
• Make sure the mains supply complies with the
rating label for voltage, frequency and phase.
• This appliance can be used by children aged
from 8 years and above and persons with
reduced physical, sensory or mental capabilities
or lack of experience and knowledge if they
have been given supervision or instruction
concerning use of the appliance in a safe way
and understand the hazards involved. Children
shall not play with the appliance. Cleaning
and user maintenance shall not be made by
children without supervision.
03
PIV & MIV®Loft Mounted Unit
INSTALLATION DIAGRAMS
STANDARD INSTALLATION
Also see page 7 for MIV® Loft Mounted Unit (twin spigot) installation method, and page 8 for installations
in 3 storey properties.
Installation diagram for the EnviroVent Loft Mounted Unit
UNIT DIMENSIONS
Dimensions of the EnviroVent Loft Mounted Unit - 470 x 405 x 372mm
*Unswitched fuse spur tted
with 3 Amp fuse
230V A.C.
3 core mains lead
For xing instructions, please
refer to the xing instructions
(gure 1) on page 5
650mm x 50mm x 25mm batten
Ceiling joists
405mm
Contents for unit
1 x Cardboard template
1 x Diuser
1 x Fixing kit
1 x Unswitched fuse spur
1m x 200mm Flexi duct
Additional contents for
unit with heater
1 x Heater enable switch
Heater enable/disable switch
(Heater version only) volt-free
*Subject to capacity, it is possible to connect the EnviroVent Loft Unit with heater to a lighting circuit. If
in doubt, wire through a ring main supply. Ensure the volt-free heater enable/disable switch is tted in a
suitable position for the user. This appliance must be earthed.
372mm
470mm
04
PIV & MIV®Loft Mounted Unit
INSTALLATION INSTRUCTIONS
SECOND STAGE
Position the EnviroVent unit on 50mm x 25mm wooden battens (not supplied) laid across the joists or raised platform
if the insulate is thicker than the joists so that the ducting between the unit and the diuser is not impeded. Lightly
screw the drilled battens to the joist through the rubber mounts and metal penny washer provided. Fit the ducting to
the unit spigot using half of the tape provided.
THIRD STAGE
Push ducting through the hole in the ceiling. Return to the hallway and connect the ducting onto the neck of the
diuser using rest of the tape provided. Ensure that the diuser is aligned correctly with the walls of the hallway. Adjust
if necessary. Fix the diuser in position using plasterboard plugs and the screws provided.
FOURTH STAGE
The EnviroVent unit must only be installed by a competent person and should be connected to an electrical supply in
accordance with the current electrical regulations. A disconnection device should be used in the xed wiring.
FIFTH STAGE
Check the unit is working correctly. Set the unit’s controls according to the house size and check that the lters are
securely in place.
SIXTH STAGE
Method of operation: Adjust the settings on the top of the unit by pressing the house setting button. By pressing the
button, the correct ventilation rate for the size of the house can be selected i.e. if the unit is on SMALL / TRICKLE and
the button is pressed, the unit will then switch to MEDIUM. Similarly, if the unit is on BOOST and the button is pressed,
the unit will then switch to SMALL / TRICKLE.
Fig.1 Fixing Instructions
FIRST STAGE
Position a dustsheet beneath the site you have chosen
for cutting the hole for the diuser. Protect your lungs
with a mask. Enter the loft space with the EnviroVent
unit and check there are no obstructions to your chosen
position for the diuser. Using the template supplied
mark the hole for the diuser and cut the 220mm hole
in the plasterboard (see page 7 for additional MIV®
installation instructions).
N.B The unit is designed to be taken apart and
re-assembled to overcome restricted access through
small loft hatches.
10 x 3 screw
Penny washer
Foam pad
Foam pad
50mm x 25mm
batten with 20mm
clearance hole
Existing joist
SMALL /
TRICKLE MEDIUM
PRESS BUTTON PRESS BUTTON
PRESS BUTTON
PRESS BUTTON
LARGE BOOST
As a rule of thumb, the setting on the EnviroVent Loft Unit should match the number of bedrooms i.e. 1 - 4
05
PIV & MIV®Loft Mounted Unit
INSTALLATION INSTRUCTIONS
SIXTH STAGE cont. - Wireless units only
For heater enable/disable
To change speed setting
On commission the unit
will default to the trickle
ow rate with heater
enable on
Press button for ve
seconds turns heater
enable o. LED will
ash red for a few
seconds
Press button for ve
seconds turns heater
enable on. LED will
show constant red for a
few seconds
Press button once, to
indicate current fan
speed and heater status.
LEDs stay on constant
for a few seconds
Next press moves the unit to the
next speed and so on. When the
speed is chosen the LED remains
on for a few seconds
If the two LEDs situated just above
the button ash alternately red and
green (when it is pressed) the control
will need to be reprogrammed.
Call your maintenance company or
EnviroVent for advice.
Heater enable ON
Auto LED stays on constant for a few
seconds.
Heater enable OFF
Auto LED ashes for a few seconds.
Boost
(Green)
(Green)
Remote Control out of range (Red)
Heater enable
(Red)
Remote Control
in range
(Green)
When the battery needs replacing, unscrew the front
cover. The battery is located on the back of the cover.
Battery type - 3V Lithium, CR2032
LED Colours
Constant Red
Flashing Red
Constant Green
06
PIV & MIV®Loft Mounted Unit
Twin Spigot
This addition to the xing instructions explains the methodology of installing the twin spigot system.
This variation to the EnviroVent Loft Mounted Unit is necessary where:
The hallway is very small, particularly when there is limited heating in the house
The loft hatch lls the hallway ceiling
Air is required to be diused into a remote zone, such as a bedroom
Cut two 105mm holes in the ceiling in the positions chosen where air is required to be delivered. Use
the distance from the Loft Mounted Unit to each hole to balance/favour airow:
i. Equal air supply required - diusers equidistant from unit
ii. More air supply required in hallway - short run to diuser in the hall
(This is the recommended method of installation)
Connect the exi ducting to the twin spigot and hold in position with a cable tie on each outlet.
MIV®INSTALLATION INSTRUCTIONS
MIV®TWIN SPIGOT INSTALLATION
Example of installation: More air is required in hall - shorter run
HALL
Vent One
BEDROOM
Vent Two
Contents for unit
with heater
1 x Fixing kit
1 x Unswitched fuse spur
2 x Mini diuser
1 x Cable tie
1m x 3m x 100mm
Flexi duct
Additional contents for
unit with heater
1 x Heater enable switch
07
PIV & MIV®Loft Mounted Unit
INSTALLATION INSTRUCTIONS
SMOKE ALARM
For installations in 3 storey dwellings the loft unit
should be wired in such a way that it shuts down
completely when the smoke alarm system is
triggered. This can be done by linking the PIV unit
to relay type smoke alarm (N/C), see schematic.
When the relay is triggered by the alarm, power
to the PIV unit will be interrupted and the unit
will stop. When the alarm resets, power will be
resumed to the unit and the EnviroVent PIV will
resume working at its previous settings.
INSTALLATION CHECKS AND MAINTENANCE
The re system should be checked at installation
to ensure proper function. The diuser should
be periodically checked to ensure they have not
been activated and that they are still delivering air
into the property. In the case of a re, the system
should be thoroughly checked.
Ø125mm metal re diuser
Installations in 3 storey dwellings
PIV Loft Mounted Unit
FIRE INSTALLATION KIT
For installations in 3 storey dwellings, it is
necessary to t an EnviroVent PIV unit (EVL-W or
EVL-H-W) with a re kit, EnviroVent part number:
KIT-PIV-SMOKE. It is important to follow the
installation instructions that come with the kit.
MIV®Loft Mounted Unit
For installations in 3 storey dwellings, it is necessary to t an EnviroVent PIV unit (EVL-W or EVL-H-W) with
a re kit, EnviroVent part number: KIT-PIV-SMOKE.
08
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