22
• Make provisions for disconnecting and cleaning of the primary drain line should it
become necessary.
• Install a 2 in. trap in the primary drain line as close to the unit as possible. Make sure
that the top of the trap is below connection to the drain pan to allow complete
drainage of pan.
IMPORTANT: Do not operate unit without a drain trap (see Figure 12). The conden-
sate drain is on the negative side of the blower, therefore, air being pulled in
through the condensate line will prevent positive drainage without a proper trap.
• Auxiliary drain if used should be run to a place where it will be noticeable if it become
operational. Occupant should be warned that a problem exists if water should begin
running from the auxiliary drain line.
• Test condensate drain pan and drain line after installation is complete. Pour several
quarts of water into drain pan, enough to fill drain trap and line. Check to make sure
drain pan is draining completely, no leaks are found in drain line fittings, and water is
draining from the termination of the primary drain line.
7.0 AIR FILTER
The unit internal air filter should only be used if the unit is readily accessible for filter
cleaning or replacing.
• If unit is not readily accessible for filter maintenance, a remote filter should be
installed in the return air system.
• If a remote filter is installed, it should be sized for a maximum of 300 feet/min. air
velocity for the CFM required..
IMPORTANT: Do not operate system without a filter. A filter is required to protect
the coil, blower and internal parts from excessive dirt and dust.
• See unit position figures for location of filter in unit cabinet and service panel giving
access to unit filter.
IMPORTANT NOTE:
• In a downflow configuration the internal air filter must not be used.
• A remote air filter should be installed in the return air system
• The remote air filter should be sized for a maximum of 300 feet per minute of air veloci-
ty for the CFM required.
8.0 AIRFLOW PERFORMANCE
Airflow performance data is based on cooling performance with a coil and filter in
place. Select performance table for appropriate unit size, voltage and number of electric
heaters to be used. Make sure external static applied to unit allows operation within the min-
imum and maximum limits shown in table on next page for both cooling and electric heat
operation. For optimum blower performance, operate the unit in the .2” to .5” in. W.C. exter-
nal static range. In general, the indoor motor speed tap should be as shown in table for the
appropriate cooling capacity shown. Always check to make sure proper motor speed tap is
connected as units are shipped from the factory connected for high speed operation (Speed
Tap 5).
FIGURE 12
CONDENSATE DRAIN TRAP
ST-A1244-01-01
Содержание RBHP-17A00NH1
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