Bryant TSTATBBN2S01-C Manual de instalación Pagina 18

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Residential H&V - 60Hz R22 & R410A - Geothermal Heat Pumps - Rev.: 21 Aug, 2007D
18
*3/4" IPT
Trap Depth
1.5" [38mm]
Min 1.5"
[38mm]
1/4" per foot
(10mm per 46cm)
drain slope
3/4" PVC or
Copper by others
Rev.: 10/26/06D
Vent (below top of
drain line)
* Some units include a painted drain
connection. Using a threaded pipe or
similar device to clear any excess paint
accumulated inside this fitting may
ease final drain line installation.
Figure 6: Horizontal Condensate Connection
HORIZONTAL INSTALLATION
CAUTION! Ensure condensate line is
pitched toward drain 1/4” per foot [10mm per
46cm] of run.
Condensate Piping – Horizontal Units
Pitch the unit toward the drain as shown in Figure 2 to
improve the condensate drainage. On small units (less
than 2.5 tons/8.8 kW), insure that unit pitch does not
cause condensate leaks inside the cabinet.
The horizontal run of a condensate hose is usually
too short to cause drainage problems. However, the
horizontal run of the condensate line should be pitched
at least 1 inch for every 10 feet [10mm per 116cm] of run
in the direction of ow to insure that the connection will
not slip off due to excessive weight or piping expansion/
contraction. Avoid low points and non-pitched piping
since dirt collects in low or level areas and may cause
stoppage and over ow.
Install condensate trap at each unit with the top of the trap
positioned below the unit condensate drain connection as
shown in Figure 6. Design the depth of the trap (water-
seal) based upon the amount of ESP capability of the
blower (where 2 inches [51mm] of ESP capability requires
2 inches [51mm] of trap depth). As a general rule, 1-1/2
inch [38mm] trap depth is the minimum.
Each unit must be installed with its own individual trap
and connection to the condensate line (main) or riser.
Provide a means to ush or blow out the condensate line.
DO NOT install units with a common trap and/or vent.
Always vent the condensate line when dirt or air can
collect in the line or a long horizontal drain line is
required. Also vent when large units are working against
higher external static pressure than other units connected
to the same condensate main since this may cause
poor drainage for all units on the line. WHEN A VENT
IS INSTALLED IN THE DRAIN LINE, IT MUST BE
LOCATED AFTER THE TRAP IN THE DIRECTION OF
THE CONDENSATE FLOW.
ѥ CAUTION! ѥ
Duct System Installation
The duct system should be sized to handle the design
air ow quietly. Refer to Figure 3 for horizontal duct
system details or gure 8 for vertical duct system details.
A exible connector is recommended for both discharge
and return air duct connections on metal duct systems to
eliminate the transfer of vibration to the duct system. To
maximize sound attenuation of the unit blower, the supply
and return plenums should include internal berglass
duct liner or be constructed from ductboard for the rst
few feet. Application of the unit to uninsulated ductwork
in an unconditioned space is not recommended, as the
unit’s performance will be adversely affected.
At least one 90° elbow should be included in the supply
duct to reduce air noise. If air noise or excessive air ow
is a problem, the blower speed can be changed. For
air ow charts, consult speci cations catalog for the series
and model of the speci c unit.
If the unit is connected to existing ductwork, a previous
check should have been made to insure that the
ductwork has the capacity to handle the air ow required
for the unit. If ducting is too small, as in the replacement
of a heating only system, larger ductwork should be
installed. All existing ductwork should be checked for
leaks and repaired as necessary.
DUCT SYSTEM INSTALLATION
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