Nortek Reznor VRA-4E Series, Установка, пусконаладка, обслуживание

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1712VRA ‐ 4EGBEN, pag.. 9/25
INSTALLATION
4.1 Unpacking and preparation
Prior to dispatch, the air heater was operated and
tested at the factory. If the heater has incurred
any damage in shipment, file a report claim within
2 working days from receipt.
Check the shipping label and data plate to ensure
the specification of gas and electrical supplies are
compatible. Read this document and become
familiar with the installation requirements and the
appliance before commencing installation.
4.2 Suspending the air heater
Before installing the appliance, check to
ensure that the supporting structure is
adequate to carry the weight of the appliance
and its ancillaries i.e. flue system. Consult
table 1 for weight data.
When the heater is lifted for suspension,
support the bottom of the heater with plywood
or other appropriately placed material. If the
bottom is not supported, damage could occur.
The heater is supplied with four point
suspension. All points must be used. Two
threaded nut retainers are provided on each
side of the top of the heater. See dimensions
in section 2.2 and figure 3.
Be sure that the
threaded hanger rods are locked to the heater as
illustrated. Recommended maximum hanger rod
length is 1.8m.
IMPORTANT : Suspend the heater from the
threaded nut retainers. Do not suspend from the
heater cabinet panels. Do not place or add
additional weight to the suspended air heater.
See hazard levels, page 2. The heater must be
installed in a level plane to ensure proper
operation.
Figure 3 Suspension detail
Add a nut to lock
the M10x1.5 hanger
rod to the heater
4.3 Fitting the Combustion air inlet/Flue system
Flue pipe runs may be horizontal or vertical and
terminate either through the wall or roof.
See
table 5 for maximum pipe length for an
appliance installed as type B or table 6 for
maximum lengths and approved supplied
concentric terminals for a heater installed as a
type C appliance.
All pipe runs must be
independently supported so that the heater does
not carry any of the weight of the flue system.
4.3.1 Fitting the flue pipe (table 5)
The flue pipe socket is located on the back of the air
heater. Flue pipes must be sealed. Use seamless,
aluminium pipe or equivalent. Follow pipe
manufacturer's instructions (see figures 4 & 5).
4.3.2 Installing a guard on the combustion air inlet
pipe for power vent (Type B installations)
The combustion air inlet socket is located at the
back of the heater. When installed as a type B
appliance,
protect the inlet by fitting an access guard on the
socket.
Do not block this socket as it supplies
combustion air for the burner (see figure 4).
4.3.3 Fitting the combustion air inlet pipe for
balanced flue (Type C installations) (table 6)
The combustion air pipe attaches directly to the
inlet socket at the back of the heater. Air inlet
pipes must be sealed. Use seamless aluminium
or equivalent. Follow the pipe manufacturer's
installation instructions. See typical installations
in figure 5.
Figure 4
Figure 5
4