Rheem RGFG User Manual

53
TABLE 17
COOLING AIRFLOW SELECTIONS FOR NON-COMMUNICATING CONDENSERS
S4-4 FAN SPEED SELECT – This dip-
switch is used to select the continuous
fan speed when the furnace is config-
ured with a non-communicating thermo-
stat.
“OFF”
½ HP MOTORS = Approx. 600 CFM
1 HP MOTORS = Approx. 1000 CFM
“ON”
½ HP MOTORS = Approx. 1200 CFM
1 HP MOTORS = Approx. 2000 CFM
S4-2 and S4-3 -
FURNACE TEST and OPERATING
MODES
FURNACE
TEST S
WITCHES
The Test Switches will place the IFC
into a test mode, operating the fur nace
at continuous input rates of either
100% of full rate (maximum fire) or
40% of full rate (minimum fire). This is
accomplished by set ting the Test
Switches as indicated in Table 18.
S4
S4-1 HEAT RISE ADJUST – This dip-
switch is used to select desired tempera-
ture rise in the heating mode. The heat
rise will always be closer to the target if
the supply air sensor is properly installed
(see sub-section in this section titled “SA
SENSOR” below).
“OFF” will yield the maximum heat rise.
(Target heat rise is 65°F but this value
may vary slightly between low and high
fire. Temp. rise will always be closer to
the target if the “SA SENSOR” is properly
installed.)
“ON” will increase the airflow to yield the
minimum heat rise. (Target heat rise is
55°F but this value may vary slightly
between low and high fire. Temp. rise
will always be closer to the target if the
“SA SENSOR” is properly installed.)
To
enter the Furnace Test Mode,
pro ceed as follows:
1. Switch the 115 volt power to the
fur nace OFF. Do not change
settings with control energized.
2. Remove furnace blower door.
3. Position Test Switches S4-2 and
S4-3 for the desired test m
ode.
4. Replace furnace blower door.
5. Switch the 115 volt power to the
fur nace ON.
6. Set the thermostat mode to
HEAT, adjust the setpoint at least
4°F above room temperature to
demand a call for heating.
When the furnace is powered with
the test switches in a position other
than modulating/single-stage or in 2-
stage mode, the first call for heat
within the first hour after power-up
will instruct the furn
ace t
o perform
as follows:
MODULATING FURNACE COOLING AIRFLOW RATES, 1/2 HP (1200 CFM Max) motor settings
(applies only to systems configured with non-communicating condenser).
S5-2 S3, Pos. 2 S3, Pos. 1
Y2 Single
Stage
Y1, Low
2 Stage
Y1 & Y2
High
2 Stage
Notes
ON OFF OFF 1200 CFM 800 CFM 1200 CFM 3 Ton A/C
ON OFF ON 1000 CFM 500 CFM 1000 CFM 2.5 Ton
ON ON OFF 800 CFM 400 CFM 800 CFM 2 Ton A/C
ON ON ON 600 CFM 300 CFM 600 CFM
OFF OFF OFF 1200 CFM 900 CFM 1200 CFM 3 Ton A/C
OFF OFF ON 1000 CFM 750 CFM 1000 CFM 2.5 Ton
OFF ON OFF 800 CFM 600 CFM 800 CFM 2 Ton A/C
OFF ON ON 800 CFM 450 CFM 800 CFM
Low Heat Airflow =
approx. 50% of
High-Stage Cooling
(Could be used with
condensers with two
compressors)
HIGH SEER (16+)
Premium
Cooling airflow
(SW1, Position 6 is
ON)
MODULATING FURNACE COOLING AIRFLOW RATES, 1 HP (2000 CFM Max) motor settings
(applies only to systems configured with non-communicating condenser).
S5-2 S3, Pos. 2 S3, Pos. 1
Y2 Single
Stage
Y1, Low
2 Stage
Y1 & Y2
High
2 Stage
Notes
ON OFF OFF 2000 CFM 1000 CFM 2000 CFM 5 Ton A/C
ON OFF ON 1600 CFM 800 CFM 1600 CFM 4 Ton A/C
ON ON OFF 1400 CFM 700 CFM 1400 CFM 3.5 Ton
ON ON ON 1200 CFM 600 CFM 1200 CFM 3 Ton
OFF OFF OFF 2000 CFM 1400 CFM 1800 CFM 5 Ton A/C
OFF OFF ON 1600 CFM 1200 CFM 1800 CFM 4 Ton A/C
OFF ON OFF 1275 CFM 1050 CFM 1400 CFM 3.5 Ton
OFF ON ON 1200 CFM 900 CFM 1200 CFM 3 Ton
Low Heat Airflow =
approx. 50% of
High-Stage Cooling
(Could be used with
condensers with two
compressors)
HIGH SEER (16+)
Premium
Cooling airflow
(SW1, Position 6 is
ON)

Rheem RGFG Specifications

General

Brand	Rheem
Model	RGFG
Category	Furnace
Language	English