Table of Contents
Advertisement
3. Installation Details
Handling The Equipment
Base Frame
IDF heaters are supplied with a channel base
frame, which incorporates cut-outs suitable for
lifting purposes.
Ensure that the structural elements which will be
used to support the appliance are adequate to
carry the weight of the appliance and its ancillary
components i.e. the ductwork system.
Ensure that the unit is installed on a level plane,
and that the surface onto which it is installed is
vibration free.
The heater must be lifted into position using a
suitably sized crane, with lifting bars or lifting
straps threaded through the lifting points. When
using lifting straps sling spreaders must be used
to provide clearance between the appliance and
the slings.
Each heater should be positioned onto the
existing steel frame, allowing a minimum 600mm
clearance on non-access sides and 850 mm on
the access side for removal of heat exchangers.
(See diagram 8)
When installing external weatherproof appliances
ensure that any part of the installation that may
be installed outdoors will not jeopardise the
integrity of the premises security.
The unit must be fastened securely to support
frame work.
For heaters fitting onto existing roof curbs, an air
tight seal between the base and the curb must
be made.
Sling spreaders must be used to provide
clearance between the appliance and the
slings. (See diagram 7)
Note: It is the responsibility of the installer to
ensure that safe lifting practices are followed
on site, and to note that the detail provided in
these instructions is for guidance only.
Duct Connections
Nordair Niche IDF heaters are designed to be
used in conjunction with air intake and air
distribution ducting. A positive seal must be
made between ductwork and the connection onto
the appliance. All ductwork must be supported
independently and not supported from the heater
casing.
Flexible duct connections to the appliance are
not required as the fan outlet is fitted with a
flexible connection and is isolated from the
casing via anti-vibration mounts.
Care should be taken when designing ducting
systems especially with regard to the selection of
fittings which will be installed adjacent to the
appliance, abrupt elbows fitted directly on to the
appliance can cause turbulence and create
uneven air flows across the heat exchanger,
resulting in hot spots and nuisance shut down of
the burner due to regional overheating in the
vicinity of the limit stat protection devices.
Unecessary pressure loss and noise generation
may also be caused by badly designed duct
systems.
Ducting should be manufactured from materials
suitable for the purpose also taking into account
the integrity of the building security.
Externally routed ducting should be thermally
insulated and protected with a waterproof
membrane.
12
Hide quick links:
Advertisement
Table of Contents
