Fantech OdourVac Installation Instructions Manual

Installation Instructions

OVK1

Contents

1 x Rodin In-line Fan with plug and lead and alloy spigots
1 x Ø50mm external wall grille
2 x Ø50mm x 90° elbow
1 x Ø50mm socket
1 x Ø50mm to Ø40mm reducer
1 x 250mm length of 40mm PVC pipe
1 x 200mm length of 40mm clear flexible pipe
2 x 100mm length of 40mm PVC pipe
1 x Ø40mm x 90° elbow
2 x 40mm cover plate
1 x Balancing valve

You Need To Supply

50mm PVC pipe, enough to extend from •
the eave terminal to the toilet position.
Extra bends if required•
Pipe brackets & fittings•
PVC glue•
Duct Tape•

Power Supply

GPO power point source installed by a licensed •
electrician where the fan will be located.
The fan can be activated by any of the following •
options: connecting to light switch, separate fan switch,
or movement sensor switch. This work must also be
completed by a licensed electrician.

The OdourVac System

The OdourVac system connects directly into the back of the
cistern and draws odours from the toilet pan via the internal
overflow pipe. For this to occur it is essential that a hole (if
one does not already exist) be drilled into the back of the
cistern to enable the OdourVac connection. If your selected
toilet suite does not have an additional hole, please refer to
Step 2a for information on Cistern drilling.

Compatibility

The OdourVac system works with most toilet suites.
However, there are certain brands/models on the
market which DO NOT enable air to be drawn from the
pan, which will mean the OdourVac system will not
work. To check if your toilet is compatible, visit
www.fantechplus.com/odourvac

There are 2 stages when installing the OVK1:

Rough In – The project is at lock up stage and prior to the

plaster going on the walls. It’s at this stage that the fan,
ductwork pipe, and bends are installed.

Fit Off – Once the plaster/painting/tiling has been
completed and the plumber is commencing the toilet fit-off,
the OdourVac system can be fitted off.

Rough In

1. Fan and Ductwork Pipe Installation

1a) Determine where the fan is to be positioned and the

intended route of ductwork pipe in the ceiling space.
Ensure the location and type of toilet suite is known
and where the OdourVac hole will be located in the
cistern.

1b) Use the bracket to affix the fan to building structure

between exhaust grille and toilet location, ensuring the
fan is facing in correct direction. The exhaust fan can
be positioned horizontally or vertically in ceiling space if
required.

1c) The main ductwork pipe to be installed in the ceiling

space should be positioned in the most direct route as
possible from the toilet through to external discharge
location (eaves or wall). Avoid using bends where
possible, however if necessary use 2 x 45° bends
instead of a 90° bend.

1d) Identify where the toilet is to be positioned in the room

and connect 50mm PVC ductwork pipe to suction end
of the exhaust fan (and attach with duct tape) in the
direction of the toilet.

1e) Connect 50mm PVC ductwork pipe into discharge end

of exhaust fan and attach with duct tape in the direction
of the intended discharge point i.e. eave, wall or roof.

1f) For exterior eave discharge, glue 50mm 90° bend to

50mm ductwork pipe, then glue another short length of
50mm ductwork to the 90° bend so that it will protrude
through eave. Take measurements of the location of

the end of ductwork pipe for fit off in
later steps.

Toilet Ventilation System

continued...

1D 1E

1B

1F

Powder room

Eave

Watch a demonstration of an OVK1 installation

at www.fantechplus.com/odourvac

2. Wall Cavity Ductwork and Toilet (WC)
Connection Preparation

2a) Drill a 50mm hole in the back of the cistern (if it doesn’t

already exist) at required location using a diamond hole
saw (these can be purchased at most hardware stores).
To do this, check toilet dimensions and measure point
to centre of OdourVac hole. The 50mm OdourVac hole
should be either to left or right from centre of cistern
and about 10mm from the top. Also measure height
from floor level to the centre of the hole. Don’t forget
to include the thickness of the floor bed and tiles. This
is the reference point to which you rough in ductwork
pipe in wall cavity. If toilet is not on site at rough in,

you must find out toilet being installed and intended
position of OdourVac hole.

2b) From 50mm PVC ductwork pipe installed in the ceiling

space, attach and glue a 50mm 90° bend and continue
50mm PVC pipe down wall cavity. (If ductwork pipe
needs to be chased into brick or masonry walls, 40mm
pipe may be used for full length of wall cavity)

2c) Connect 50mm socket to pipe and insert 40mm

reducer into socket. Attach 250mm length 40mm pipe
to reducer, then 40mm clear flexible ducting to PVC
pipe. Glue all PVC fittings. Connect clear flex to PVC
using duct tape. The clear flex assists in final fit off and
provides flexibility/movement in event that the fit off
measurements are slightly out.

2d) Attach short length of 40mm pipe to bottom of the clear

flex with duct tape. Attach/glue 40mm 90° PVC bend to
pipe.

2e) The bend must terminate at the height and location

of the future OdourVac hole in cistern (refer Step 2a).
Bend must face where the hole will be in cistern. Leave
ductwork pipe in wall cavity to be sheeted over. Take
measurements as to location of bend in cavity for fit off in
later steps.

Fit Off

3. WC Connection Fit Off

3a) Once installation of toilet pan is complete, position

cistern in its permanent location and mark the 50mm
OdourVac hole location on wall or use dimensions to
locate (Step 2e). Remove and cut hole in plaster or tiles.

3b) After tiling is complete, locate 40mm bend in wall cavity

and glue final short length 40mm PVC pipe to bend.
Slide 40mm cover plate over 40mm PVC pipe and glue
to wall to cover any excess hole in wall. This pipe will be
trimmed/adjusted after connecting cistern and installing
the balancing valve.

3c) Feed pipe through hole in cistern and re-attach cistern

to pan. Trim 40mm inlet pipe approx flush with inside
of cistern. Slide other 40mm cover plate over PVC pipe
and glue cover plate to inside of cistern. The top of both
cover plates may need to be trimmed so that they cannot
be seen once cistern lid is in place.

3d) Attach OdourVac Balancing Valve by pushing into pipe.

The soft foam gasket will seal any other gaps. Once
installed, seal any gaps with silicone to reduce air leaks,
as they may affect air performance.

3e) To fit the external grille go to exterior of building and refer

to rough in measurements for location of ductwork pipe
in eaves/wall (Step 1f). Cut hole in eaves or wall. Locate
50mm pipe and attach external grille with duct tape.
Secure grille to eave/wall with screws/silicon.

3f) To achieve good performance ensure power is supplied

to exhaust fan then open balancing valve totally and
adjust to achieve desired airflow.

2C

2D

2B

Contact details:
Australia: 1300 387 587
New Zealand: 0800 106 266
Web: www.fantechplus.com

Part No: INST-OVK1 08/2012

Toilet Ventilation System
Installation Instructions (continued...)

OdourVac is a registered trade mark of OdourVac Ventilation Systems Pty. Ltd.

Powder room