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conditioning for the main floor (and second
floor if applicable) and radiant tubing in the
basement and tile areas. A few outlets
located in the basement is recommended in
order to provide good air circulation and
supplementary heating if required.
low water temperature systems (combo
systems with conventional hot water
tanks + geothermal sytems)
Operating
MaxAir
™ fan coils in a low
temperature system, care must be taken
when designing and installing the system.
Due to the lower air temperatures, when
installing ductwork in an unconditioned space,
extra insulation is recommended in order to
maintain a consistent air temperature at the
outlets. The main supply plenum must be
insulated and wrapped with a vapor barrier in
order to meet local codes. All duct work
should then be covered with another layer of
insulation. Due to the fact that with lower
water temperatures you get a lower supply air
temperature, it is imperative that the water
temperature is known at the design stage. If
possible, a higher tank setting should be
used, and an anti-scald valve be installed for
the domestic use. The higher water
temperature will increase system capacity,
and the anti-scald valve will reduce the risk of
scalding. Since some areas have specific
regulations regarding combo systems, check
your local building code for details on water
tank temperatures, tempering valves, and
pump timers.
cooling coil capacities
Possible cooling coil capacities are given in
the Table 1.
INSTALLATION
.
The installer must adhere strictly to all local
and national code requirements pertaining to
the installation of this equipment.
Detailed instructions are shipped with all
accessory items and should also be followed
in detail.
air handler mounting
The
MaxAir(e)
™ combo air handler can be
installed in most configurations. Some
precautions must be observed for some of
the possible mounting positions.
For installations where the access door faces
up or down ensure the external circulating
pump is not mounted with its shaft in the
vertical position. The pump shaft must be
mounted horizontally to avoid damage during
operation.
The air handler can be mounted by securing
straps through any of the existing screw
holes in the cabinet. Should the existing
screw be too short for securing a mounting
strap, a longer screw can be used provided
care is taken not to damage any internal
components.
When fastening straps using screws, special
care should be taken in the vicinity of the coil
to avoid tube puncture.
The cabinet is designed so that the return air
can be located on either side of the cabinet,
through the bottom of the cabinet, or from the
back. Position the filter rack so that the filter
is readily accessible.
Install the air handler with the door firmly
screwed in place to make certain the cabinet
is mounted without racking. Provide at least
24 inches of service access clearance in front
of the access panel of the air handler. zero
clearance is acceptable on all other faces.
domestic water piping
Install a
½
” (12mm) sediment faucet for use
as a drain/purge valve. The drain valve must
be located downstream of the pump and
check valve, and upstream of the isolation
valve (if isolation valve is present). This
Содержание MaxAir 100e P2
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Страница 46: ...Page 46 WIRING DIAGRAM P3 UNITS ALTERATIONS HEAT PUMP OPTION...
Страница 51: ...Page 51 FAN COIL DIMENSIONS AND RETURN AIR SIZE LOCATION...
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Страница 61: ...Page 61 2 AND 2 5 TON EVAPORATOR COIL SIZES 70 IPCE 24 30A...
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