Rheem RRNL-B, Installation Instructions Manual

Page: 43 / 108

Selection B: Factory Setting
This is the factory setting and provides cooling airflows as defined in the COOLING AIR-
FLOWS section (no reduction in airflow).
Selection C: On Demand Dehumidification
This selection allows On Demand Dehumidification when using a dehumidifying thermo-
stat or humidistat connected to the ODD and “R” pigtails. Nominal airflow is reduced by a
preprogrammed amount to maximize latent removal. When high humidity is detected, the
cooling airflow as shown in Table 12.
IMPORTANT: A humidistat or dehumidifying thermostat MUST be connected to the “ODD”
and “R” pigtails when using this setting. Refer to the explanation of On Demand
Dehumidification use for more information.
Selection D: No Adjustment
This selection is the same as the factory setting and provides cooling airflows as defined in
the NOMINAL AIRFLOW ADJUSTMENT section.
ON DEMAND DEHUMIDIFICATION INTERACTIONS WITH AIRFLOW
ADJUSTMENT SETTINGS
On Demand Dehumidification switch settings (9 & 10) override the cooling airflow adjustment
switch settings (3 & 4). The +/-10% adjustments are turned OFF when Selection A (switch 9 &
10 are OFF) or Selection C (switch 9 OFF; switch 10 ON and no signal to ODD terminal) is
used.
TABLE 11
MODEL
SWITCH SWITCH Y1 Y2
9 POSITION 10 POSITION CFM CFM
RRRL-C024 OFF OFF 468 680
RRRL-C036 OFF OFF 680 1020
RRRL-C049 OFF OFF 893 1360
RRRL-C060 OFF OFF 1063 1573
TABLE 12
RRRL-
SWITCH 9
POSITION
SWITCH
10
POSITION
ODD
INPUT
Y1
CFM
Y2
CFM
C024
C036
C049
OFF
OFF
OFF
ON
ON
ON
NONE
24VAC
468
550
680
800
NONE
24VAC
680
800
1020
1200
NONE
24VAC
893
1050
1360
1600
C060 OFF ON
NONE
24VAC
1063
1250
1573
1850
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