page no. 21 of 48
LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.
Temporary
supports
Threaded drop rods must have lock nuts fitted that are
tightened down onto the 10mm fixings in the heater.
All thread rod
Locknuts
Suspension
point
Recommended maximum drop rod length is 1.8m.
Permanent
suspension
supports
If reducing noise levels is important the heater should be
insulated from the structure by installing it on suitable
anti-vibration mountings. In all such cases and when the
heater is suspended it is essential that all gas, duct, and
electrical connections to the heater are made with flexible
connections to maintain continuity of connection.
LNVx Duo discharges air in two directions, significantly
enhancing the effective coverage of the heater and
leading to a more even warmth distribution especially
within modern well insulated buildings. This in-turn offers
a potential saving on both capital and installation costs.
LNVx D and LNVx CCF models are designed for use
with duct work to more precisely define the point of air
delivery, and /or provide ducted return air or ducted fresh
air inlet. All ducting must be independently supported of
the air heater. Joints and seams of supply ducts and joints
between LNVx ancillary components must be securely
fastened and made airtight using appropriate sealants
or sealing strips. If required the duct work should be
insulated to reduce heat loss.
Ducting should be connected to the heater spigots via an
airtight flexible coupling of noncombustible material.
Before fitting the coupling it must be ensured that a
minimum clearance of approximately 15mm will be
maintained between the ends of the ducting and the
heater spigots.
Sound attenuators may be fitted in inlet and outlet ducts
to reduce airborne fan noise. If sound attenuators are
used then these must be factored into the total static
resistance of the ductwork. Materials used in outlet sound
attenuators must be capable of withstanding 100°C air
temperature without any deterioration.
The room thermostat should be fitted at a point which
will be generally representative of the heated area as
far as temperature is concerned. Draughty areas, areas
subjected to direct heat e.g. from the sun, and areas
where the air movement is relatively stagnant e.g. in
recesses, should be avoided. The thermostat should be
mounted approximately 1.5m from the floor.
Any room thermostat, frost thermostat, time clock etc.
must be suitable for switching 230V, 5A and must be of
the 'snap action' type to minimise contact bounce.
For electrical connections of external controls see section
2.5 or the accompanying wiring diagram.