Rheem RGFE Installation Instructions Manual page 68

FIGURE 68
DIPSWITCH BANK SW2 TEST MODE SELECT
Switch (SW2-1) Call
ON COOL
ON COOL
ON Heat
ON Heat
OFF COOL
OFF COOL
OFF Heat
OFF Heat
SW2
SW2-1 = ODD "ON" or "OFF" select.
This switch will ignore the input from the
24 volt terminal labeled "HUM STAT"
during cooling when in the "OFF" posi-
tion. However, the "HUM STAT" input is
always read in the heating mode to turn
on and off the humidifier relay.
When in the "ON" position, the dehumid-
ification feature will become active and it
will be necessary to install a humidistat
to the "HUM STAT" terminal as dis-
cussed and shown in wiring diagrams in
the section of this manual titled
" HUMIDIFICATION AND DEHUMIDIFI-
CATION " of this document. Failure to
install a humidistat to the "HUM STAT"
terminal with dipswitch SW2-1 in the
"ON" position will cause the cooling
speed airflow to be reduced to the
dehumidification speed..
68
Voltage at " HUM" Action
24 Normal Cool (c or C)
0 Dehum Cool (cd or Cd)
24 Hum Contacts Closed.
0 Hum Contacts Open.
24 Normal Cool (c or C)
0 Normal Cool (c or C)
24 Hum Contacts Closed.
0 Hum Contacts Open.
SW2-2 and SW2-3 -
FURNACE TEST and OPERATING
MODES
FURNACE TEST SWITCHES
The Test Switches (SW2) 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 setting the Test
Switches as indicated in Table 15
below.
To enter the Furnace Test Mode,
proceed as follows:
1 Switch the 115 volt power to the
2 Remove furnace blower door.
3 Position Test Switches SW2-2
4 Replace furnace blower door.
5. Switch the 115 volt power to the
6. Set the thermostat mode to
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
of full rate (minimum fire and 2-stage operation). This is accomplished by s
the Test Switches as indicated in Table XX below.
TABLE 15
SW2-2 AND SW2-3 MODE SELECTION SETTINGS
Table XX - SW2-2 and SW2-3 MODE SELECTION SETTINGS
Switch SW2-2
Mode
Modulating/ Single-
Stage
Test 40%
Test 100%
Two-Stage
Note: the "Test 40%" and "Test 100%" settings will time out and become i
Note: The "Test 40%" and "Test 100%" settings will time out
one hour after power reset.
and become invalid one hour after power reset.
To enter the Furnace Test Mode, proceed as follows:
1 Switch the 115 volt power to the furnace OFF. Do not change setti
with control energized.
2 Position Test Switches SW2-2 and SW2-3 for the desired test mode
3 Switch the 115 volt power to the furnace ON.
furnace OFF. Do not change
settings with control energized.
and SW2-3 for the desired test
mode.
furnace ON.
HEAT, adjust the setpoint at least
4°F above room temperature to
demand a call for heating.
Switch SW2-3
Position Position
OFF OFF
ON OFF
OFF ON
ON ON