Setpoint Limits; Cycles Per Hour - Daikin TSTATD4271C Installation And Maintenance Manual

Setpoint Limits

(Setup Step 20)
This feature allows the user to set 4 different levels of security:
(0 - 3).
No Setpoint Limits (0) – When this level is selected, no
restrictions are activated.
Use Setpoint Limits (1) – When this level is selected, the heat
and cool setpoints can be restricted to preset levels, set in
setup steps 21 and 22.
• Maximum Heat Setpoint (Setup Step 21) – (35°–99°).
• Minimum Cool Setpoint (Setup Step 22) – (35°–99°).
Force Program Mode (2) – When this level is selected, the
heat and cool setpoints can be restricted to preset levels, set
in setup steps 21 and 22 and the thermostat is locked into the
current mode and time period program setting.
Setpoints Frozen (3) – When this level is selected, the heat
and cool setpoints, the current mode, and time period program
settings are locked.

Cycles Per Hour

(Setup Step 23)
The Cycles Per Hour setting may limit the number of times per
hour your HVAC unit may energize. For example, at a setting of
6 cycles per hour the HVAC unit will only be allowed to energize
once every 10 minutes. The Cycles Per Hour limit may be
overridden and reset by pressing the UP or DOWN buttons on
the thermostat. Settings are No Limit, 2, 3, 4, 5, or 6.
Compressor Minimum Off Minutes
(Setup Step 24)
This feature allows the user to set a minimum off time for the
compressor. Settings are 5 mins., 3 mins., or 0 mins.
Minimum Heat/Cool Setpoint Difference
(Setup Step 25)
This feature allows the user to set the minimum gap between
Heat and Cool setpoints in AUTO mode. Select from 0 to 6. If
setup step 2 is not set for AUTO-CHANGEOVER, this step will
not appear.
Number of Compressor Stages
(Setup Step 26)
This feature is for heat pump applications only .
This feature allows the thermostat to control 1 or 2 compressor
stages when configured for heat pump.
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7-D P
ay rogrammable
Deadband Settings
(Setup Steps 27 - 36)
The Deadband is the number of degrees or minutes that the
thermostat waits before it initiates the stages of heating or
cooling.
1st Stage Deadband (Setup Step 27) – Specifies the minimum
temperature difference between the room temperature and
the desired setpoint before the first stage of heating or cooling
is allowed to turn on. (1–6 degrees) For example, if the heat
setpoint is 68 and the 1st Stage deadband is set to 2 degrees,
the room temperature will need to reach 66 degrees before the
heat turns on.
2nd Stage Deadband (Setup Step 28) – Specifies the
additional minimum temperature difference after the first stage
turns on before the second stage is activated. (0°–10°)
3rd Stage Deadband (Setup Step 29) – Specifies the additional
minimum temperature difference after the second stage turns
on before the third stage is activated. (0°–10°)
4th Stage Deadband (Setup Step 30) – (Two Stage heat pump
only) - Specifies the additional minimum temperature difference
after the third stage turns on before the final stage of strip heat
is activated. (0° - 10°)
Minutes Between 1st and 2nd Stage (Setup Step 31) –
Specifies the minimum time (in minutes) after the first stage
turns on before the second stage can turn on. (0 - 60)
Minutes Between 2nd and 3rd Stage (Setup Step 32) –
Specifies the minimum time (in minutes) after the second stage
turns on before the third stage can turn on. (0 - 60)
Delay Between 3rd and 4th Stage (Setup Step 33) – Specifies
the minimum time (in minutes) after the third stage turns on
before the final stage can turn on. (0 - 60)
Second Stage Turnoff Point (Setup Step 34) – Specifies
whether second stage will turn off at first stage deadband or
remain on until the room temperature demand is satisfied.
Choose between Deadband or Setpoint.
Third Stage Turnoff Point (Setup Step 35) – Specifies whether
third stage will turn off at second stage deadband or remain
on until the room temperature demand is satisfied. Choose
between Deadband or Setpoint.
Fourth Stage Turnoff Point (Setup Step 36) – Specifies whether
fourth stage will turn off at third stage deadband or remain
on until the room temperature demand is satisfied. Choose
between Deadband or Setpoint.
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