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507788-01Cmrcool.comPage 8 of 20
2.
and connect primary drain line to the main drain pan
connection.
NOTE:
3. If the secondary drain line is to be used, remove the
plug or the knockout and route the drain line so that
requirements on the secondary drain line.
4. Check again to ensure drain ports and drain pan are
free of all debris.
5. Plug and check any unused drain pan openings for
leaks or seepage from the drain pan.
6. Install a 2” trap in the main (primary) drain lines as
close to the unit as practical (see Figure 6). Make sure
NOTE:
NOTE:
7. Route the drain line to the outside or to an appropriate
drain. Drain lines must be installed so they do not block
service access to the front of the air handler. A 24”
and service access.
NOTE:
Test Condensate Drain
Test the drain pan and drain line after installation:
1.
2. Check the installed drain pan. Drain pan must be
leaking. Water must be draining from the end of the
primary drain line.
3. Correct any leaks found.
Duct System and Filters
Duct System
of the supply plenum.
Supply and return duct system must be adequately sized
to meet the system’s air requirements and static pressure
conditioned areas or 2” minimum in unconditioned areas.
extend at least 3 ft. from the air handler before turning or
branching off plenum into duct runs. The plenum forms
Filters
Model Filter Size – in.
-024, -030 15" x 20" x 1"
-036, -042, -048, -060 18" x 20" x 1"
Table 1. Unit Air Filter Size Chart
and performance may be reduced. The pressure drop
may also cause the limit to trip more frequently during
resulting in an increase in the number of service
against the data given in the appropriate Product
Service and Application Note ACC002 (August 2000).
IMPORTANT
Installing Duct System
handler. If an isolation connector is used, it must be
Field-Fabricated Return Air Duct Flange For
Horizontal Applications
A return air duct system is recommended, but not factory-
closet, run a full-size return connection to a location outside
the closet.
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