Form CP-MAPS-D12 with FX05, P/N 209341 Rev 4, Page 15
Display
Name
(cont’d)
Control Variable Description (cont’d)
Default
Value
Range
rHP - Room Discharge Air Temperature Heating Setpoint
When the temperature in the space decreases below the space heating setpoint (SSP-
HSo) through the space heating prop band (SHP), the rHP value will become the active
discharge air setpoint. The value of rHP will not be used by the unit if a space temperature
sensor is not used.
80°F
45° to
120°F
dHH - Outdoor Reset Option – Duct Discharge Air Temperature Heating Setpoint
When used in conjunction with dHL, OH2 and OH3, the neutral discharge air heating
setpoint will be adjusted based on the outdoor air temperature. If dHH is higher than dHL,
the controller will reset the discharge air temperature setpoint from the low value of dHL to
the high value of dHH as the outdoor air goes from the high valve of OH2 to the low value
of OH3. The default value disables this feature.
55°F
45° to
120°F
HPP - Heating Discharge Air Proportional Band
The value of HPP is divided in half around the value of dHL (duct discharge heating set-
point). When the discharge air temperature goes below dHL + ½ HPP, a stage of heating
is activated. When the discharge air temperature goes below dHL – ½ HPP value, a stage
of heating is deactivated.
10°F 4° to 30°F
Hdb - Space Heating Dead Band
The space heating dead band is a value around the heating setpoint at which nothing will
occur – hence “dead band.” For instance, if the space heating setpoint is 70°F and the
Space Heating Dead Band has a value of 2°F, then the temperature in the space drops
below 70° (SSP - HSO - ½ HdB) to 67.2° before the unit will switch to space heating con-
trol. Likewise a value of 72.8 will switch back to neutral air heating control. This parameter
should only carry a value for difcult tuning applications.
0°F 0° to 2°F
LSP - Low Limit Freeze Protection Setpoint
If the discharge air temperature sensor senses discharge air temperature below the value
of LSP for 600 seconds, the blower will be disabled and the outside air damper will close.
The control will reset when the discharge air sensor senses discharge air 30° above the
value of LSP. If this sequence occurs three times within one hour, the control will go to
continuous lockout.
36°F
-40° to
40°F
oC1 - Cooling Mode Lockout – Ambient Dry Bulb
If the outdoor air temperature is less than the value of oC1, cooling mode will be disabled.
When the outside air temperature rises above oC1, the unit will be in cooling mode.
68°F
58° to
130°F
oH1 - Heating Mode Lockout – Ambient Dry Bulb
If the outdoor air temperature is greater than the value of oH1, mechanical heating will
be disabled. When the outside air temperature falls below oH1, the unit iwll be in heating
mode.
62°F
20° to
105°F
*
dP1 - Reheat Enabled Setpoint – Ambient Dewpoint
At dewpoints below this value, reheat will not be enabled
60°F 52° to 80°F
dCb - Discharge Air Cooling Deadband
9°F 4° to 20°F
*
roH - High Ambient Heat Override – Dry Bulb
If the outdoor air temperature is above this setpoint, the reheat will not be enabled.
120°F
60°
– 120°F
*
roL - Low Ambient Reheat Override – Dry Bulb
If the outdoor air temperature is below this setpoint, the reheat will not be enabled.
65°F 54° – 75°F
*
En1 - 1st Stage Enthalpy Cooling Reference Lockout
If the outdoor enthalpy is below this value, no cooling mode is allowed. Above this value,
1st, 2nd, or 3rd stage may be active.
29° 15 - 40
En2 - 2nd Stage Enthalpy Cooling Lockout
Provides an enthalpy differential to the En1 setting (add this differential to the En1 value). If
outdoor enthalpy is below this value, the 2nd or 3rd stage cooling control is not allowed.
5° 0 - 20
(continued)
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