38
P/N 032498h
Appendix B: Installation Worksheet
(continued)
Job Name:
HVAC system type:
Table 21: Advanced Configuration Parameters for the SMC55-HWQS
(continued)
Applicable
Systems
Advanced
Configuration
Parameter
Name
Description
Default Value
Range
Value to
be Set
Heat
Pump
1
and
Conventional
78A
Aux / W
2
On
°F below setpoint to turn stage on. If auxiliary is
stage 2, this differential is used to turn on.
3° F
1° F – 10°
F
79A
Aux / W
2
Off
°F above setpoint to turn stage off. If auxiliary is
stage 2, this differential is used to turn off.
0° F
1° F – 10°
F
80A
Cool Stage 1 On
°F above setpoint to turn stage on.
1° F
1° F – 10°
F
81A
Cool Stage 1 Off
°F below setpoint to turn stage off.
1° F
1° F – 10°
F
82A
Cool Stage 2 On
°F above setpoint to turn stage on.
2° F
1° F – 10°
F
83A
Cool Stage 2 Off
°F below setpoint to turn stage off.
0° F
1° F – 10°
F
84A
Compressor
Cool Stage 2
Upstage Delay
Stage 2 cooling will not turn on until the first
stage has run for the chosen duration.
0: 0 minutes, 1: 1 minute, 2: 2 minutes,
3: 5 minutes, 4: 10 minutes, 5: 20 minutes,
6: 30 minutes, 7: 1 hour, 8: 2 hours,
9: 4 hours, 10: 8 hours,
11–99: 11–99 hours
0 minutes
0 – 99
minutes
85A
Compressor
Heat Stage 2
Upstage Delay
Stage 2 compressor heating will not turn on
until the first stage has run for the chosen
duration.
0: 0 minutes, 1: 1 minute, 2: 2 minutes,
3: 5 minutes, 4: 10 minutes, 5: 20 minutes,
6: 30 minutes, 7: 1 hour, 8: 2 hours,
9: 4 hours, 10: 8 hours,
11–99: 11–99 hours
0 minutes,
however
thermostat will
default based on
stages
0 – 99
minutes
Heat Pump
1
88A
Reversing Valve
Delay (RVD)
Delay to wait for reversing valve to change
over. When changing between heat and cool,
the thermostat will turn off the compressor,
then wait for MCOT. The thermostat will then
change the state of the O/B signal, and wait
for the reversing valve delay (RVD) before
turning the compressor and fan back on.
1 second
0 – 99
seconds
Radiant
Floor
1
90A
Slab Maximum
If slab temperature rises above this maximum,
must turn off regardless of air temperature.
85 °F
0 – 120 ºF
91A
Slab Minimum
If slab temperature falls below this minimum,
must turn on regardless of air temperature.
60 °F
0 – 120 ºF
92A
Floor 100%
Differential
Temperature
°F below the setpoint to turn on system to
100%.
2.0 °F
0 – 20 ºF
93A
Floor 0%
Differential
Temperature
°F above the setpoint to turn on system to 0%.
2.0 °F
0 – 20 ºF
94A
Cycles Per Hour
Cycles per hour.
3 (20 minute
signal period)
1-20 CPH
1
Included with SMC55-HWQS version 7420 or newer, SMC55-RESI version 7302 or newer and HomeWorks Palladiom Thermostat version 1.10 or newer.