White Rodgers 21V51U-843 Universal Two-stage HSI Integrated Furnace Control Kit Instrução De Instalação
4
OPTION SWITCH SETTINGS
Heat Pump Systems
DIP switch
S5-1 (see table above) is set to “On” from the factory
for use with conventional (non-Heat Pump systems). For heat
pump systems move the
pump systems move the
S5-1 DIP switch to the “Off” position.
This will continuously output an O signal to the motor whenever
there is Y signal and run the circulator blower at a constant speed
when the pump is operating.
there is Y signal and run the circulator blower at a constant speed
when the pump is operating.
De-Humidification Connection
DIP switch
S5-2 (see table above) is set to “On” from the factory
for systems that do not have a dehumidification terminal con-
nection from the thermostat. For systems using a thermostat
that provides a De-Humidification option move DIP switch
nection from the thermostat. For systems using a thermostat
that provides a De-Humidification option move DIP switch
S5-2
to “Off”.
DIP Switches
Switch
Settings
Options
Heat Pump
S5-1
S5-1
Off
Installed
On
Not Installed*
De-humidifier
S5-2
S5-2
Off
Installed
On
Not Installed*
*Factory Settings
S5
1
2
2
OFF ON
HEAT PUMP AND DE-HUMIDIFICATION
Heat Fan Off Delay Timing
DIP switches
S7-3 and S7-4 (see table above) configure the
number of seconds the blower will run after the call for heat
ends. Factory default is 90 seconds
ends. Factory default is 90 seconds
.
Average
Calculated
Duty Cycle
% Equals
or is less
than
Low to high
Stage Delay
Demand
0
38
12 minutes
Light
38
50
10 minutes
Light to Average
50
62
7 minutes
Average
62
75
5 minutes
Average to Heavy
75
88
3 minutes
Heavy Light
88
100
1 minute
Heavy
S7
DIP Switches
Switch Settings
Options
Thermostat
Type and W2
Delay
S7-1,
S7-2
S7-1
S7-2
Time
Off
Off
Off*
On
Off
10 Minutes
Off
On
Auto
On
On
20 Minutes
Heat Fan Off
Delay
S7-3, S7-4
S7-3
S7-4
Time
Off
Off
90 Secs*
Off
On
120 Secs
On
Off
150 Secs
On
On
180 Secs
*Factory Settings
3
4
4
1
2
2
OFF ON
THERMOSTAT TYPE AND HEAT-FAN-OFF-DELAY
Multi-stage Thermostat Set-up,
Factory Default
DIP switches
S7-1 and S7-2 (see table above) are set to the
“Off” position from the factory for use with a multi-stage ther-
mostat. This allows the thermostat to control staging between
low and high fire.
mostat. This allows the thermostat to control staging between
low and high fire.
Single Stage Thermostat Set-up,
Module Controls Staging
DIP switches,
S7-1 and S7-2 (see table above) configure for a
single stage thermostat. Options include a 10 minute delay on
second stage, 20 minute delay on second stage or an Auto set-
ting allowing the module to calculate the time delay for second
stage based on average demand. The “Average Calculated
Duty Cycle” table shows how the module calculates staging
based on demand.
second stage, 20 minute delay on second stage or an Auto set-
ting allowing the module to calculate the time delay for second
stage based on average demand. The “Average Calculated
Duty Cycle” table shows how the module calculates staging
based on demand.
FURNACE MANUFACTURER
DIP Switch Selection for OEM Applications
S2
OEM
1
2
OFF
OFF
Trane
OFF
ON
Thermo Pride/
Goodman
Goodman
ON
OFF
Lennox
ON
ON
York
3
1
2
2
OFF ON
S2
IMPORTANT: Switch selection must match furnace manu-
facturer for proper motor operation.
Set DIP switches
facturer for proper motor operation.
Set DIP switches
S2-1 and S2-2 to match the equipment using
the table above. NOTE: DIP switch
S2-3 is not used.