Honeywell PRESTIGE THX9321 - Manual (Page 39)

THX9321 PRESTIGE ® 2.0 AND THX9421 PRESTIGE ® IAQ WITH EIM
39 68-0311—02
3150 Heat Cycles Per
Hour - Stage 3
Note: Depending
on the application,
the text displayed
on the screen may
show the specific
heating equipment
type.
1 to 12 CPH Default varies
based on
heating
equipment type
selected
Both No ISU 3010 Temperature Control Options
must be set to Advanced to view or adjust
cycle rate.
This ISU is only displayed when ISU 2070
Heat Stages is set to 3 stages.
Cycle rate limits the maximum number of
times the system can cycle in a 1 hour
period measured at a 50% load. For
example, when set to 3 CPH, at a 50% load,
the most the system will cycle is 3 times
per hour (10 minutes on, 10 minutes off).
The system cycles less often when load
conditions are less than or greater than a
50% load. The thermostat automatically
defaults to the recommended cycle rate
based on the heating equipment type that is
used. You can change the cycle rate as
needed. Defaults for commonly used
systems are shown below.
Standard Efficiency Gas Forced Air = 5 CPH
High Efficiency Gas Forced Air = 3 CPH
Oil Forced Air = 5 CPH
Electric Forced Air = 9 CPH
Hot Water Fan Coil = 3 CPH
Hot Water Radiant Heat = 3 CPH
Geothermal Radiant Heat = 3 CPH
Steam = 1 CPH
Gravity = 1 CPH
3160 Backup Heat Cycles
Per Hour - Stage 1
Note: “Stage 1" is
not displayed if
there is only 1
stage.
1 to 12 CPH Default varies
based on
heating
equipment type
selected
Both No ISU 3010 Temperature Control Options
must be set to Advanced to view or adjust
cycle rate.
This ISU is only displayed when ISU 2070
or 2130 Backup Heat Stages is set to 1
stage.
Cycle rate limits the maximum number of
times the system can cycle in a 1 hour
period measured at a 50% load. For
example, when set to 3 CPH, at a 50% load,
the most the system will cycle is 3 times
per hour (10 minutes on, 10 minutes off).
The system cycles less often when load
conditions are less than or greater than a
50% load. The thermostat automatically
defaults to the recommended cycle rate
based on the heating equipment type that is
used. You can change the cycle rate as
needed. Defaults for commonly used
systems are shown below.
Standard Efficiency Gas Forced Air = 5 CPH
High Efficiency Gas Forced Air = 3 CPH
Oil Forced Air = 5 CPH
Electric Forced Air = 9 CPH
Hot Water Fan Coil = 3 CPH
Hot Water Radiant Heat = 3 CPH
Geothermal Radiant Heat = 3 CPH
Steam = 1 CPH
Gravity = 1 CPH
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes