AAON H3 Series, Установка, эксплуатация и обслуживание

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Figure 12 - Flange Overlap
.
Figure 13 - Self-Tapping Screw
4. Final Sealing
It is very important to keep air from
infiltrating the unit cabinet. Seal all piping
penetrations with Armaflex, Permagum or
other suitable sealant. Also seal around drain
connections, electrical connections and all
other inlets where air may enter the cabinet.
This is especially important when the unit is
installed in an unconditioned area.
Control Box
Some H3 units include an external control
box that must be mounted in the field. The
control box is designed with two mounting
holes on the back panel. Make sure the wall
fasteners can hold the weight of the control
box. See Figure 14
External control boxes provided with
conduit exceeding 0.2 m (6ft) in length must
have conduit supported in compliance with
the National Electrical Code NFPA 70.
FMC and LMFC conduit must be supported
within 30.5 cm (12 in.) of both the unit and
the external control box and at intervals no
more than 1.4 m (4.5 ft) along the length.
Figure 14 - Back View External Control
Box
8mm (
5/16”) Hex
Head
Self-Tapping Screws
25 mm
(
1”)
Proper sealing of the electrical and
piping entries into the unit must be
verified. Failure to seal the entries
may result in damage to the unit and
property.
CAUTION