Daikin MicroTech II Operation And Maintenance Manual page 28

d o
esCrIptIon of peratIon
Table 15: Set point calculation examples
Example A – Stand-Alone Unit, No remote sensor, No network communication
Given
Occupancy Mode = Occupied and Unit Mode = Heat
Space Temp Setpoint = (not used)
Setpoint Offset = (from LUI) = 0.0°F
Setpoint Shift = (not used) = 0.0°F
OHS = 69.8°F
Effective set point calculations
Effective Setpoint = OHS + AbsOffset + Setpoint Offset + Setpoint Shift
= 69.8°F + 0.0°F + 0.0°F + 0.0°F = 69.8°F
Example B – Stand-Alone Unit, Remote sensor w/ 55F-85F Set point, No network communication
Given
Occupancy Mode = Occupied and Unit Mode = Heat
Space Temp Setpoint = 71.0°F (from remote sensor)
Setpoint Offset = -1.0°F (from LUI)
Setpoint Shift = (not used) = 0.0°F
OCS = 75.0°F, OHS = 70.0°F
Effective set point calculations
Absolute Offset = Setpoint - (OCS + OHS) / 2 = 71°F - (75.0°F + 70.0°F) / 2 = -1.5°F
Effective Setpoint = OHS + AbsOffset + Setpoint Offset +Setpoint Shift = 71.0°F - 1.5°F - 1.0°F - 0.0°F = 68.5°F
Example C – Stand-Alone Unit, Remote sensor w/ +/- 3°F, BACnet network communication
Given
Occupancy Mode = Occupied and Unit Mode = Heat
Space Temp Setpoint = 71.0°F (from network input)
Setpoint Offset = +3.0°F (from remote sensor)
Setpoint Shift = (from network input) = -2.0°F
OCS = 74.0°F, OHS = 68.0°F
Effective set point calculations
AbsOffset = Setpoint - (OCS + OHS) / 2 = 71.0°F - (72.0°F + 68.0°F) / 2 = 1.0°F
Effective Setpoint = OHS + AbsOffset + Setpoint Offset + Setpoint Shift = 71.0°F + 1.0°F + 3.0°F – 2.0°F = 73.0°F
OM 752-4 28 www.DaikinApplied.com