Airmax MaxAir 100 LV, Инструкция по установке и обслуживанию

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Page 13
when the duct directly communicates with the
living space.
Return and supply air duct work should be
the same size as the air handler openings up
to the first branch, fitting or transition.
Warning! Special care should be taken in
the vicinity of the coil to avoid tube puncture.
Screw into opening flange instead of top of
cabinet when fastening the supply air duct.
Engineered duct design guidelines are based
on a nominal external static pressure of 0.5
”
wc.
fan coil placement
The MaxAir(e)
™ fan coil unit is to be placed
according to the layout supplied by the
designer. If a change in location is required,
the person responsible for the design is to be
consulted. The fan coil unit can be located in
a horizontal or vertical position.
The location of the fan coil is not as critical
as it is with conventional low velocity
systems. Location of the fan coil unit will
depend on:

Minimizing all duct runs.

Maximizing usable floor space.

Reducing structural changes.

Serviceability and access to the unit.

Location of heat/cool source to fan coil.

Available space in mechanical room.
When suspending the unit from the ceiling, it
is recommended to use spring vibration
isolators at each corner of the fan coil unit.
This will provide a secure means of hanging
the unit, and will also reduce any transfer of
vibration into the building structure. Rubber
belting is also acceptable. Another common
means of suspending the fan coil is with
angle iron, sheet metal channel, or uni-strut
placed underneath the unit, and supported by
threaded rod. If this method is used, isolators
(rubber or equivalent) must be placed
between the fan coil unit, and the support.
Ensure that the hanging method does not
hinder any piping, electrical runs, filter
access, or blower access.
trunk duct
Inspect the location for the trunk duct as per
the duct layout for the home or building. An
important consideration in placement of the
main supply plenum is that the fan coil unit
must be connected to the main supply
plenum. Therefore, it is necessary to have a
clear path from the fan coil unit to the main
supply plenum.
branch ductwork
After securing the take-off to the trunk duct,
be sure to eliminate any air leaks.
airflow
Once all the ducts are installed, the airflow
from the vents should be checked. If you
have vents that are not blowing strongly,
there are a few things to check. Make sure
that the branch duct is not blocked. Check for
air leaks in the ducts, and seal all leaks with
tape or duct sealant, as per local codes.
condensation
On units supplied with an Airmax Accessory
slab
external cooling coil, a drain connection
is provided on the cooling coil. A drain line,
with a trap must be installed
(the size of the
trap is discussed in the previous section ). For
cooling installations where the fan coil unit is
installed in hot, humid areas, condensate
may form on the outer cabinet of the unit.
When this potential exists, a secondary drain
pan should be installed under the entire unit.
This pan should also extend under the piping
connections and TX valve. This is especially
critical in attic installations where condensate
can cause damage to the ceiling
DX refrigerant cooling
When installing the fan coil, either in the
horizontal or vertical position, make certain