Lennox Prodigy 2.0 User Manual

Page 71
Example 1: Use the Service output to energize a dehumidifier at 60% relative humidity and turn off at 55% relative humidity.
(Refer to figure 22.)
1. Determine:
Parameter 186 - Input Source X to option “7" (relative humidity)
Algorithm Y to option “0" (hysteresis loop)
Inversion Z option “0" (output not inverted)
2. Apply step 1 to Parameter 186 formula:
Parameter 186 = X + (32
x
Y) + (16
x
Z)
= 7 + (32
x
0) + (16
x
0)
= 7
3. Set Parameter 186 to “7".
4. Set Parameter 188 to 60% relative humidity
5. Set Parameter 191 to 5% dead-band.
60% relative hu
midity (Paramet
er 188)
Dehumidifier Off
Dehumidifier On
55% relative
humidity
(Parameter
188-191)
60-5=55%
Figure 22. Example 1 — Service Output Energizes Dehumidifier at 60% relative humidity / Turns Off at 55%
relative humidity
Example 2: Use the service output to energize a humidifier at 30% relative humidity and turn off at 35% relative humidity.
(Refer to figure 23.)
1. Determine:
Parameter 186 - Input Source X to option “7" (relative humidity)
Algorithm Y to option “0" (hysteresis loop)
Inversion Z option “1" (output inverted)
2. Apply step 1 to Parameter 186 formula:
Parameter 186 = X + (32
x
Y) + (16
x
Z)
= 7 + (32
x
0) + (16
x
1)
= 7 + 0 + 16
= 23
3. Set Parameter 186 to “23".
4. Set Parameter 188 to 35% for 35% relative humidity
5. Set Set Parameter 191 to 5% for 5% dead-band.
35% relative
humidity
(Parameter 188)
Humidifier Off
Humidifier On
30% relative
humidity
(Parameter
188-191
35-5=30%
Figure 23. Example 2 — Service Output Energizes Dehumidifier at 30% relative humidity / Turns Off at 35%
relative humidity
Example 3: Use the service output to energize at 80°F and off at 70°F (inverted) and the service output operation being
energized at 70°F and off at 80°F (not inverted).(Refer to figure 24.)
IMPORTANT
This applies to input source option 9 (Outdoor Air Temperature) on Parameter 186.
Parameter 189
(70°F)
Service Output On
Service Output Off
Service Output On
Service Output Off
Output Inverted - Input source 9 only Output NOT Inverted - Input source 9 only
Parameter 189
(80°F)
Parameter 189
(80°F)
Parameter 189
(70°F)
Figure 24. Example 3 — Outdoor Air Temperature Operation - Service output energized

Lennox Prodigy 2.0 Specifications

General

Brand	Lennox
Model	Prodigy 2.0
Category	Controller
Language	English