Airflow Loovent Series User guide

~~Note to in
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premises.
I Instructions for installation, maintenance
-Please leave these
Loovents and Humidivents
TM 9020110/E/797
I and safe use.
the occupier of the

2

Section 2: Positioning
2.1 All models may be surface mounted on, 2.4 The position chosen should give the best
f or recessed in a wall or ceiling, or mounted flow of air through the whole room. Consider
t in a window. They must not be sited where the position of doors, windows, curtains and
, there is any possibility of direct liquid spray blinds and sources of stale air, odours and
9r where the normal air temperature may condensation.
exceed 40°C. As a general rule the fan should be
2.2 Loovents or Humidivents should not be mounted as high as possible (see Fig. 1)
used in air containing flammable gases or 2.5 The instructions in this booklet are given
dust. for walls of bricks, concrete block or other
2 3 It .s part .c I I . t t th t amasonry. For other types of construction the
.I I u ar y Impor an a n ..
adequate supply of fresh air is provided if the method of fixing may have to be adapted.
I fan is to be fitted in a room with a gas
! burning appliance which is NOT of the
f balanced flue type.
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Section 3: First steps
3.1 The carton contains an assembled fan, available. (See section 1). The model
bezel and polystyrene case support. Unpack reference is marked on the carton, and on
these items and check that they are the front Ofthe module.
undamaged. If damaged, do not use. Report 3 2 Th f II .' t bany damage to supplier. ..e O owInQ lems are or may e
Before installation ensure that you have requlre~ depending on the type of
the model you resuire from the range Installation:
3
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1
11
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3.4 Please read the appropriate parts of
these instructions before starting work.
3.3 No special tools are essential but the use
of a 4~. core drill which may be obtained from
your local hire shop will make the job easier .
4

4.3 All fans in the range are designed to
operate from a 220/240 volt 50- ac supply.
4.4 Disconnect any mains electricity supply
before making connections to the fan.
4.5 Decide which type of installation is
required (eg. 01 -wall mounted with door
switch), and work out a suitable wiring
scheme, taking into account the positions of
existing wiring and junction boxes. It is often
easiest to connect through the lighting
circuit.
4.1 All electrical installations must comply
with IEE wiring regulations. It is a requirement
of the IEE regulations that all appliahces shall
be installed via a switched, fused connection
unit. All fans in the range must be earthed. It
is recommended that the installation is
carried out by a qualified electrician.
4.2 The fan, switches or wiring must not be
directly accessible to a person using a bath
or a shower. If the fan unit is fitted in a
bathroom the switched, fused connection
unit must be mounted outside the room.
4.6 Wiring Diagrams
4.6.1 DIAGRAM 1. MODELS 01 AND H51 -DOOR SWITCH OPERATION
Junctionbox
10~ D.~
-
N mains
L supply
*
Switched, fused
connection unit
fitted with a 2A fuse
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N T l ~I
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4.6.2 DIAGRAM 2. MODELS 01, 02/2S AND H51 -liGHT SWITCH OPERATION.
I JunctionQox i~
Ie>"il
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N mains
L supply
*
Single pole Switched, fused
110 0 ' ..J light switch connect,on Unit
~T , fittedwitha2Afuse.
INote 2: Model H51 wilr not operate in its timed mode
fiR without a trigger (T) connection. The pull ,;witch shown
~ is only applicable to the H51 model.
Note 1: Model 01 will not operate without Note 3: Model 02/28 will not operate at 'boost' without
a trigger (T) connection. a trigger (T) connection.
4.6.3 DIAGRAM 3. MODELS 03, 06, L 11, H50, H50N AND H56.
N mains
L supply
---"-
11000'
N T l ,~
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Make sure that the case and backplate is
level. The slotted fixing holes allow for some
adjustment.
Make the electrical connections to the
terminal block, after releasing it from the
backplate (see Section 4 and Fig 5).
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/ Pegs to mount terminal
/ block to extend cable when
replacing a MK2 model with
a MK3.
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Fig.4
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INTER'OR WAL
POSSIBLE CABLE
ROuTING
'/ /1 EXTE"","WALL
~ G"OUT
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1 POSITK)N OF
EXTE""," WALl
i G"'LLE
Make sure
cables are
routed in the
channels
shown.
-1 35 mm O\/ERLAP )
Y-
POSITION OF
CASE AND
8ACKPLATE
)When
re-assembling
ensure fan and
motor assembly
is fitted under
these tabs.
110mm PlASTIC P1PE
.To assistwiring,release
Fig. 5 terminalblockwithscrewdriver
bladeinsertedhere.
5.6 Re-fit the terminal block, fan and motor
assembly, which must be inserted under the
tabs on the backplate and be pulled to the
left whilst tightening the fixing screws,
followed by the module and grille. Do not
overtighten the grille retaining screw.
5.7 The external wall grille (available from
Airflow) may now be fitted. Place it against
the outside wall face centered over the duct
outlet. Mark the fixing hole positions, drill
and plug the wall and fix with 25 mm long
No.6 roundhead screws.
Fig.3
5.4 Install the electricity supply cables (see
Section 4 and Fig 3) allowing 250 mm to
protrude for making connections within the
case.
5.5 Drill and plug the four fixing holes for the
backplate to accept 38 mm long No.8
roundhead screws. Fit the backplate to the
wall after feeding the cables through the
entry hole. Retain with four screws, which
Should not be overtightened. Reassemble
the case by aligning it with the backplate and
sharply tapping opposite edges with the
palm of the hand until it is securely latched
(see Fig 4).
6
Applies to all models
5.1 Dismantle the unit by first undoing the
slotted screw on the underside of the grille a
few turns and removing the grille by pivotting
it about its top edge. Remove the module by
lifting and pulling it out. Release the fan and
motor assembly by undoing the two cross-
headed screws several turns and sliding the
assembly to the right (see Fig. 2). To ease
installation it is best to spring the backplate
out of the case.
5.2 Mark the positions and sizes of the holes
for the exhaust and cable entry and the hole
centres for fixing the backplate to the wall
using the template provided. which must be
broken out alang the perforations of the
carton insert. Carefully make a hole for the
exhaust large enough to clear 110 mm o.d.
plastic pipe.
5.3 Cut a length of 110 mm o.d. plastic pipe
to bridge the wall cavity. Grout into position
to maintain the integrity of the cavity.
..I CA\lITY

Section 6: Installation within the wall
Applies to all models
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II \i.1IBOmm I .1.'"
app,o, I ,/. '-""'
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'""'""
200mm ~
.pp'o,""' ~
Fig.6
~C //! CAVITY //
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//// / / / // c/////c !
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!c c //// //// 1/
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INTERIOR WALL
~
EXTERIOR WALL
/. GROUT
POSSIBLE CABLE
ROUTING
"// POSITION OF
EXTERIOR
WALL GRILLE
-.; !- 35 mm OVERLAP AP
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POSITION
OF CASE
AND
BACKPLATE I
4to6mm ~
---:-:- ..w.~.., ;~.. ~~.=:-'--~
r/ / / / / / / --
110mm
PLASTIC PIPE
~FOAM TAPE
IF REQUIRED
79 to 81 mm
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Fig.7
7
6.1 Dismantle the unit (see Section 5.1 ). For t ~
this installation it is best not to separate the '~
case and backplate. t! .
6.2 Make an opening in the wall large
enough to fit the case and backplate and to
take the exhaust to the outside wall. Allow
about 10 mm clearance all round the casing
and pipe (see Fig. 6).
6.3 Cut a length of 110 mm o.d. plastic pipe
to fit over the exhaust spigot and reach to the
outside wall. If a seal is important between
the outlet spigot and the pipe, use 6 mm
thick self adhesive foam tape around the
spigot circumference.
The front face of the case should protrude
by 4 to 6 mm from the wall surface if the
bezel is to be used (see Fig. 7).

6.4 Install the electricity supply cables (see
Section 4 and Fig. 7), allowing 250 mm to
protrude for making connections within the
case.
6.5 Grout the casing and pipe in place
making sure that the top edge of the casing
is horizontal, the front protruding and that the
tubing is flush with the outside. The pressure
of the grouting material may cause the
casing to bow, therefore it is recommended
that the polystyrene support is used until the
grout has set (see Fig. 8). Alternatively,
check that the grille is a loose fit within the
casing before the grout has set.
Fit the bezel by pushing over the casing
up to the wall surface.
6.6 When the grout has set, make the
electrical connections to the terminal block
after releasing it from the backplate. (See
Section 4 and Fig. 9).
6.7 Re-fit the terminal block fan and motor
assembly, which must be inserted under the
taDs on the backplate and be pulled to the
left whilst tightening the fixing screws,
followed by the module and grille. Do not
overtighten the grille retaining screw.
6.8 Fit the external wall grille (see Section 5.7)
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7.6 Make the electrical connections to the
terminal block after releasing it from the
backplate (see Section 4 and Fig. 5).
7.7 Refit the terminal block, fan and motor
assembly, which must be inserted under the
tabs on the backplate and be pulled to the
left whilst tigh.tening the fixing screws,
followed by the module and grille. Do not
overtighten the grille retaining screw. If the
unit is fitted with a pull cord, route the cord
through the grille aperture (see Fig. 11).
.1
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7.2 Mark and cut out ceiling holes making
sure that they align correctly with holes in
the support.
7.3 Install the electricity supply cables (see
Section 4). Allow a minimum of 250 mm of
cable to protrude beyond the ceiling for
making connections within the case.
7.4 Dismantle the unit (see Section 5.1 and
Fig.2).
7.5 Feed the cables through the entry hole in
the backplate and fix the case and backplate
to the support using four 38 mm No.8
roundhead screws, which should not be
overtightened. Reassemble the case by
aligning it with the backplate and sharply
tapping opposite edges with the palm of the
hand until it is securely latched (see Fig. 4).
The slotted fixing holes allow for some
adjustment of the angular position of the
case and backplate.
Fig. 11
9
Applies to all models
7.1 Make a support to fit between the joists
as shown (see Fig. 10). Mark the positions
and sizes of the holes for the exhaust and
cable entry and the hole centres for fixing
the backplate using the template provided,
which must be broken out along the
perforations of the carton insert.
Cut holes for the exhaust and cable entry.
Make sure when cutting the exhaust holes,
that there is sufficient clearance for the type
of ducting to be fitted.

due to moist warm air coming into contact
with the coid surface of the exhaust duct.
This condensation may drip down into the
fan unless the pipe is lagged, twin walled
insulated pipe is used or a moisture trap
fitted as near to the unit as possible.
7.8 Install ducting from the exhaust spigot
either through the roof using a weathering
slate and roof cowl, or under the eaves using
an outlet grille (both available from Airflow),
(see Fig. 12).
When venting vertically through the roof
void there may be problems with condensation
ROOFCOWL AND
WEATHERINGSLATE ~110 mm DIAMETER
PLASTIC PiPE
FLEXIBLE DUCTING
100 MM DIAMETER
-CONDENSATION TRAP
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Fig.12 ALTERNATIVE METHODS OF VENTING THROUGH ROOF
the carton insert.
Cut holes for the exhaust and cable entry.
Make sure when cutting the exhaust hole,
that there is sufficient clearance for the type
of ducting to be fitted.
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-?- POSITION OF DUCTING
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ALLOW SPACE I
FOR DUCTING TO ;
BE FITTED) I
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~JOIST
POSSIBLE CABLE
ROUTING
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"
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0' 0
-CEILING
4106 mm
1;
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)':7':10 ~ L BEZEL GAP 2 TO 3 mm
BEZEL ---J ~ ALL ROUND
Fig.13
10
...
Applies to all models
8.1 Make a support to fit between the jOists las shown (see Fig. 13). Mark the positions
and sizes of the holes for the exhaust and
cable entry and hole centres for fixing the
backplate using the template provided, which
must be broken out along the perforations of