Nortek PREEVA NEOS, Installation And Servicing Manual, Page: 11 / 52

Reznor, PREEVA Neos, Installation Manual, EN 2021-05, D301315 Iss 1 Page No 11 of 52
I
Installation
Internal model location
For best results, the unit should be placed with
certain rules in mind:
• Always ensure that the minimum
clearances are maintained.
• When possible, heaters should be arranged
to blow toward or along exposed wall
surfaces.
• Suspended heaters are most effective
when located as close to the working zone
as possible, but care should be exercised to
avoid directing the discharged air directly
on to room occupants.
• Partitions, columns, counters or other
obstructions should be taken into
consideration when locating the unit
heater so that a minimum quantity of
airflow will be deflected by such obstacles.
• When units are located in the centre of
the space to be heated, the air should be
discharged toward the exposed walls.
• In large areas, units should be located
to discharge air along exposed walls
with extra units provided to discharge
air in toward the centre of the area. For
optimum results heaters are best used
in conjunction with recirculating air fans
suspended at high level. Contact the
manufacturer / distributor for more details.
• At those points where infiltration of cold
air is excessive, such as at entrance doors
and shipping doors, it is desirable to locate
the unit so that it will discharge directly
toward the source of cold air, typically
from a distance of 4.5 to 6.0 metres.
Alternatively, air curtains can be installed.
Do not locate the heater where
it may be exposed to water or
where the ambient temperature
exceeds 40°C.
Suspension is not allowed when the air
handler comprises more than a heating and
ventilation section (i.e. a mixing and filter
section is included).
In cases where the installation is by means of
supporting points, make sure that the distance
between supporting points does not exceed
1.5m. In general it is recommended to support
the base where it is screwed down with
supporting points.
Ensure that the structural elements, which will
be used to suspend or support the appliance,
are adequate to carry the weight of the
appliance and its ancillary components i.e. the
flue system.
The location where the air heater is to be
installed must provide sufficient space around
the heater for servicing and clearances for
safety. Beware to allow space for the passage
of vehicles i.e. lift trucks, etc.
Ensure that the air heater is installed in a level
plane.
The heater must be fastened securely to any
base mount framework.
Clearance distances
The following table shows the minimum clearances necessary to ensure that safety from
combustibles and for servicing are maintained. In the event that the appliance is required to be
installed on the floor then a non-combustible base must be provided.
Model PRN025-I
PRN025-E
PRN035-I
PRN035-E
PRN045-I
PRN045-E
PRN055-I
PRN055-E
PRN070-I
PRN070-E
PRN100-I
PRN100-E
Min distance from wall not control side mm 150 150 150 150 150 150
Min distance from wall on control side mm 750 750 750 750 750 750
Min distance from floor to underside mm 1800 1800 2500 2500 2500 2500
Min distance from ceiling to top of unit mm 200 200 200 200 200 200