Rheem RHPL-HM3621JC - Duct Flanges; 8 Air Filter; 9 Airflow Performance

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• Auxiliary drain line should be run to a place where it will be noticeable if it becomes
operational. Occupant should be warned that a problem exists if water should begin
running from the auxiliary drain line.
• Plug the unused drain connection with the plugs provided in the parts bag, using a
thin layer of teflon paste, silicone or teflon tape to form a water tight seal.
• Test condensate drain pan and drain line after installation is complete. Pour 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.
7.3 DUCT FLANGES
Field-installed duct flanges (4 pieces) are shipped with units. Install duct flanges as
needed on top of the unit. (See Figure 3.)
8.0 AIR FILTER (Not Factory-Installed)
If a remote filter is installed, it should be sized for a maximum of 300 feet/min. air veloci-
ty 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.
9.0 AIRFLOW PERFORMANCE
Airflow performance data is based on cooling performance with a coil and no 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
minimum and maximum limits shown in table on the next page for both cooling and elec-
tric heat operation. For optimum blower performance, operate the unit in the .1 [3 mm] to
1.00 inches [25 mm] W.C. external static range. Units with coils should be applied with a
minimum of .1 inch [3 mm] W.C. external static.
FIGURE 22
CONDENSATE DRAIN TRAP
DO NOT OPERATE UNIT WITHOUT
CONDENSATE DRAIN TRAP.
UNIT MUST BE SLIGHTLY INCLINED
TOWARD DRAIN CONNECTION.
DO NOT OVERTIGHTEN DRAIN FITTING
UNIT
3''
3''