Rheem 96v series Installation Instructions Manual page 91

Low Cool % of 2
S2-9 Stage Cooling Airflow
ON 50%
OFF 75%
OFF is Factory Setting
G. Auto Stage; S2-10 & S2-11
There are applications where a single stage ther-
mostat is used with the two stage furnace. With
these applications the furnace will initially operate
in the low heat stage. Based upon a user selected
time, the furnace will automatically stage to high
heat stage mode. Auto staging will take place with
a 24VAC signal on "W1" when autostaging is
turned on. "W2" will be recognized as a call for
stage 2 heat even when autostaging is active. The
following dipswitches are available to accommo-
date this requirement:
S2-10 S2-11 AutoStage
OFF OFF Normal 2 stage operation
(Autostaging is off)(factory set-
ting)
ON OFF AutoStage, 10 minutes on low,
then to high with call on "W1"
OFF ON AutoStage, 15 minutes on low,
then to high with call on "W1"
ON ON AutoStage, 20 minutes on low,
then to high with call on W1"
H. Continuous Fan Speed; S2-12
One dipswitch (S2-12) is to be provided for legacy
continuous fan adjustment.
Selections are as follows:
S2-12 =OFF = 500 CFM for ½ HP, 700 for 3/4HP,
800 CFM for 1 HP motors. (factory setting)
S2-12 =ON = 800 CFM for ½ HP,
1200 for 3/4HP, 1600 CFM for 1 HP motors.
I. Low Gas Heat Rise (Airflow) Adjustment; S3-13,
S3-14
Two dipswitches (S3-13, S3-14) shall be used to
st
select low (1 stage) gas heat rise airflow adjust-
ment in legacy mode. Each selection will use a dif-
ferent airflow demand for first stage gas heat. The
selections are set to approximate a specified tem-
perature rise as follows. Note: Temperature rise
will vary based on conditions and technician
should always check temperature rise.
nd
S3-13 S3-14 Target Temperature Rise
OFF OFF Nominal Value Specified on Rating
Label (Factory Setting) (Approx.)
ON OFF Approx. +7°F
OFF ON Approx. -7°F
ON ON Approx. +12°F
J. High Gas Heat Rise (Airflow) Adjustment; S3-
15, S3-16
Two dipswitches (S3-15, S3-16) shall be used to
select high (2nd stage) gas heat rise airflow adjust-
ment in legacy mode. Each selection will use a dif-
ferent airflow demand for second stage gas heat.
The selections are set to approximate a specified
temperature rise as follows. Note: Temperature
rise will vary based on conditions and technician
should always check temperature rise.
S3-15 S3-16 Target Temperature Rise
OFF OFF Nominal Value Specified on Rating
Label (Factory Setting) (Approx.)
ON OFF Approx. +7°F
OFF ON Approx. -7°F
ON ON Approx. +12°F
K. Heat Blower Off Delay; S3-17, S3-18
Two dipswitches (S3-17, S3-18) can be used to se-
lect heat blower off delays (in seconds) in legacy
mode.
S3-17 S3-18 Heat OFF Delay (high & low)
OFF OFF 90 (Factory Setting)
ON OFF 120
OFF ON 160
ON ON 180
L. Manual Fault Clear
Dipswitch S3-18 also doubles as a means to clear
the fault history buffer. The switch can be turned
off/on/off/on/off/on (three times) or
on/off/on/off/on/off (three times) within less than 30
seconds and the fault buffer will be cleared.
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