Airmax MaxAir 100e P2, Инструкции по проектированию, установке и обслуживанию

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ensure adequate free area and no velocity
noise at the grill. Where allowed by local
codes, a single return air grill may be used.
When using flexible duct for return air, use
one size larger duct due to the higher friction
loss.
For areas that require fresh air make-up
(either direct or through an ERV or HRV), an
intake may be installed in the system. Size
and insulate the fresh air supply as per local
code. Remember, should you install a duct
that is too large, the excess fresh air will
increase the system operating cost and effect
overall equipment capabilities. It is
recommended to install a well fitted damper
into the return air plenum. The damper can
then be adjusted to supply the exact amount
of fresh air needed to meet local building
codes. Optionally, a smaller diameter fresh
air duct can be used and sized for a 0.15"
w.g. pressure drop.
indoor air quality
The main factors of indoor air quality are air
filtration, humidity control, and fresh make-up
air. All of these factors can best be achieved
with a continuous run fan system. It is
important to have a good quality air filter for
your
MaxAir ™ fan coil system. Maintaining a
clean air filter will increase the unit life span,
allow the unit to operate efficiently and
effectively, and will provide clean air for the
occupants.
Humidity control is also an important factor to
indoor air quality. Too much humidity can
result in problems with bacteria, fungi, and
mites. Too little humidity can result in
respiratory problems, allergies, and asthma.
An RH level of 35 - 45% is recommended.
When a drum, power mist, or curtain flow
type humidifier is used, the humidifier must
be mounted on the return air duct and
transitioned to a 2 ½” branch run to the
plenum. Make certain the opening in the
supply air plenum is no larger than 1".
When installing a steam humidifier special
attention is required when installing the
discharge hose. Although the humidifier
installation manual may state that the
discharge hose is to be mounted in the
supply air plenum, this is not be the case in
the
MaxAir ™ fan coil system. The discharge
hose must be mounted in the return air
plenum. The reason for this is because the
high static pressure in the supply plenum is
greater than that found in the discharge hose
and will not allow the steam to exit the hose.
Even in areas where there is no building code
requirement for fresh air make-up, it is
recommended to install a fresh air duct. In
airtight buildings, the off-gassing of VOC's
(volatile organic compounds) from building
materials can be detrimental to the indoor air
quality.
combination MaxAir™ and hydronic
heating
One of the benefits of using a hydronic
system is the versatility that you have when
designing the heating system. Radiant
underfloor heating is an excellent system, but
it does have limitations. You cannot have
cooling, air filtration, and humidification with a
radiant heating system. Similarly, a
MaxAir ™
system may not be an option for a house with
high localized heat losses/gains.
For example, a room in a house with large
window and very little insulation. Retrofitted
radiant floor heating may be unable to meet
the BTU requirements to heat the room. With
a
MaxAir ™ combo fan coil we can heat this
room, but would have an excessive number
of outlets in a small area.
It is in rooms such as this that a hybrid
system of both radiant heating and a
MaxAir ™ fan coil would be the optimum
system to provide comfort conditioning. This
will provide the homeowner with good indoor
air quality, and warm floor comfort.
One of the most common approaches to
heating with a hybrid system is using the
MaxAir ™ fan coil to provide the comfort