34
6.17 S
UPPORTING
F
LOOR
The floor should be capable of fully supporting the NUOS.
Uneven and less sturdy floors should be bolstered using a thick exterior
plywood base spanning joists.
Ensure floor under NUOS is sealed against water ingress.
Check all plumbing and cable routes are satisfactory.
If installed in a bathroom, check that the unit is not within any part of the
Bathroom Zone 1. It can be in Zone 2 or 3. The switch/fuse units must not
be in Zone 2.
Ensure that there is adequate clearance all round the unit for air circulation
and maintenance, see fig. 6.18A.
6.18 P
OSITIONING
THE
U
NIT
F
IG
. 6.18
A
R
ECOMMENDED
O
PERATIONAL
AND
S
ERVICING
C
LEARANCES
6.19 L
EVELLING
THE
U
NIT
Operational Servicing
Clearance
A
400mm
400mm
Required minimum clearance when no duct is used.
Inlet and side exhaust and top exhaust.
B
100mm
300mm
Suggested minimum clearance when duct is used.
Inlet and side exhaust and top exhaust.
C
100mm
300mm
Suggested minimum rear clearance.
D
50mm
400mm
Minimum above unit when no duct is fitted.
E
400mm
400mm
Service clearance required for electric heater.
It is essential that the unit is level both horizontally and vertically; this is to
ensure that any condensation that is created in the upper compartment
drains down through the condensate drainpipe.
Four adjustable feet are provided for levelling.
The four feet have holes that enable the unit to be screwed to the floor,
use stainless steel screws and suitable rawl plugs (not supplied).
The unit will produce condensation. Ensure that the condensate outlet is
safely discharged. See 6.9A & 6.16A
Ensure adequate clearance
for all pipework, fittings and
electrical work.
6.20 F
IXING
THE
U
NIT
6.21 C
ONDENSATE
O
UTLET
