Envirovent PIV Manuel utilisateur

Due to our policy of continuous innovation and improvement EnviroVent reserves the right to alter

products specication 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

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

diuser is not positioned within 1m of a smoke

detector. If the diuser cannot be repositioned,

up to two sides of the diuser 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 diuser 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 qualied

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.

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 Diuser

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

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 diuser 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

diuser using rest of the tape provided. Ensure that the diuser is aligned correctly with the walls of the hallway. Adjust

if necessary. Fix the diuser 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 diuser. 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 diuser. Using the template supplied

mark the hole for the diuser 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

50mm x 25mm

batten with 20mm

clearance hole

Existing joist

SMALL /

TRICKLE MEDIUM

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

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)

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

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 diused 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 airow:

i. Equal air supply required - diusers equidistant from unit

ii. More air supply required in hallway - short run to diuser 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 diuser

1 x Cable tie

1m x 3m x 100mm

Flexi duct

Additional contents for

unit with heater

1 x Heater enable switch

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 diuser 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 diuser

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.

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