Yazaki AROACE CH-MG150, Руководство по установке

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14
LEVELING
MG-Series units must be level in order
for the fluids to be distributed properly
over their respective tube bundles.
There is a level bar mounted on the front
of the machine right above the absorber
section, near the fusible plug.
Figure 9
– Level Bar
The unit must be level to both the
longitudinal and transverse alignments.
In cases of multiple units installed side-
by-side, the units should all be level
individually as well as in respect to each
other. It is essential that all leveling be
completed before any piping connections
are attempted.
Use shim plates to level the machine.
Shims are typically field-supplied when
needed and should be of galvanized, flat,
hot-rolled mild steel in dimension of at
least 0.2”
(5 mm)
thick, 10.2”
(260 mm)
long, and 7.9”
(200 mm)
wide. When shims
are required, place them under the
machine tie-down points.
Figure 10
– L-Anchor Plate Detail
(all dimensions in inches)
COMBUSTION AIR SUPPLY
As with all gas-fired appliances,
careful consideration must be given in
regard to the provision of sufficient free
air for combustion and venting. The
rules for such are found in the National
Fuel Gas Code, NFPA Standard 54. The
code supersedes anything found in print
here
or in any other Yazaki
documentation. What has been provided
here are only guidelines to help toward
proper installation of the unit.
When installed outdoors, no special
provisions are usually needed in regard
to combustion air. However, if the unit is
in a confined area outside, some issues
could arise if external forces cause a
negative pressure area around the unit.
An example of such would be having the
unit installed in an alcove with a strong,
sustained wind blowing by along the
edge of the building. Such occurrences
are rare, but should be considered.
Of greater concern are indoor
installations, especially in areas with
more than one gas-fired appliance. Keep
in mind that whatever combustion air
supply is present, it must be capable of
supporting every gas-fired appliance in
the space while all of them operate at full
capacity. Combustion air openings are
also often the source for dilution air for
Category
I appliances, so it is
recommended to consult the manuals on
all appliance in the area in order to