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MENU
PARAMETER
ERV
c
STATUS
MECH COOL ON 0
(cont)
FAN SPEED
W (HEAT ON)
MAT SET
LOW T LOCK
DRYBLB SET
DRYBLB DIFF
ENTH CURVE
DCV SET
MIN POS
MIN POS L
MIN POS M
SETPOINTS
MIN POS M
VENTMAX L
VENTMAX M
VENTMAX H
VENTMIN L
VENTMIN M
VENTMIN H
ERV OAT SP
EXH1 SET
Table 11 — Menu Structure
PARAMETER
PARAMETER
DEFAULT
RANGE AND
VALUE
INCREMENT
OFF
ON/OFF
0, 1, or 2
n/a
LOW or HIGH
n/a
ON/OFF
38°F to 65°F
53°F (12°C)
(3°C to 18°C);
increment by 1°
–45°F to 80°F
32°F (0°C)
(–43°C to 27°C);
increment by 1°
48°F to 80°F
63°F (17°C)
(9°C to 27°C);
increment by 1°
0°F to 6°F;
0°F
increment by 2°F
ES1,ES2,ES3,ES
ES3
4, or ES5
500 to 2000 ppm;
1100 ppm
increment by 100
4.0V
2 to 10 vdc
6.0V
2 to 10 vdc
5.4V
2 to 10 vdc
4.4V
2 to 10 vdc
6.0V
2 to 10 vdc
5.4V
2 to 10 vdc
4.4V
2 to 10 vdc
3.7V
2 to 10 vdc
3.4V
2 to 10 vdc
2.8V
2 to 10 vdc
0°F to 50°F
32°F (0°C)
(–18°C to 10°C);
increment by 1°
50%
0 to 100%
a
(cont)
b
ENERGY RECOVERY UNIT RELAY OUTPUT
Output of AUX terminal; displays only if AUX = ERV
ON = relay closed
OFF = relay open
Displays stage of mechanical cooling that is active.
SUPPLY FAN SPEED
Displays speed setting of fan on a 2?speed fan unit.
HEAT DEMAND STATUS
Displays status of heat demand on a 2?speed fan unit.
MIXED AIR SET POINT
Set point determines where the economizer will modulate the OA damper to
maintain the mixed air temperature.
COMPRESSOR LOW TEMPERATURE LOCKOUT
Set point determines outdoor temperature when the mechanical cooling
cannot be turned on. Commonly referred to as the compressor lockout.
OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT
Setpoint determines where the economizer will assume outdoor air
temperature is good for free cooling; e.g.: at 63°F (17°C), unit will economize
at 62°F (16.7°C) and below and not economize at 64°F (17.8°C) and above.
There is a 2°F (1.1°C) deadband.
DRYBULB SET is only displayed if the economizer has a single dry bulb sensor.
Dry bulb Differential will only show if using dual dry bulb - i.e. when an
outdoor air temperature sensor C7250 is attached to OAT terminals and
C7400S sensor is wired to S-Bus and configured for RAT (return air).
Free cooling will be assumed whenever OA temp is at or below RAT minus
this dry bulb setting.
ENTHALPY CHANGEOVER CURVE
(Requires enthalpy sensor option)
Enthalpy boundary "curves" for economizing using single enthalpy.
DEMAND CONTROLLED VENTILATION SET POINT
Displays only if CO
sensor is connected. Set point for Demand Control
2
Ventilation of space. Above the set point, the OA dampers will modulate open
to bring in additional OA to maintain a space ppm level below the set point.
VENTILATION MINIMUM POSITION.
Only displayed if controller is set for single speed unit under FAN TYPE, and
if DCV is NOT used.
VENTILATION MINIMUM POSITION AT LOW SPEED.
Only displays if unit is set for 2 or 3 speed and CO
2 speed with 1 heat and 1 cool then set for HEATING ventilation. If using
3 speed with 1 heat and 2 cool then set for LOW SPEED COOLING ventilation.
VENTILATION MINIMUM POSITION AT MEDIUM SPEED.
Only displays if unit is set for 3 speed with 1 heat and 2 cool, and CO
used. Set for HEATING ventilation.
VENTILATION MINIMUM POSITION AT HIGH SPEED.
Only displays if unit is set for 2 or 3 speed and CO
with 1 heat and 1 cool then set for COOLING ventilation. If using 3 speed with
1 heat and 2 cool then set for HIGH SPEED COOLING ventilation
DCV MAXIMUM DAMPER POSITION AT LOW SPEED
Displays only if a CO
sensor is connected. Used for Vbz (ventilation max
2
cfm) set point. Displays 2 to 10 V if <3 sensors (RA,OA, and MA). In AUTO
mode dampers controlled by cfm.
DCV MAXIMUM DAMPER POSITION AT MEDIUM SPEED.
Only displays if unit is set for 3 speed with 1 heat and 2 cool. Set for
HEATING ventilation.
DCV MAXIMUM DAMPER POSITION AT HIGH SPEED.
Only displays if unit is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using
2 speed with 1 heat and 1 cool then set for COOLING ventilation. If using
3 speed with 1 heat and 2 cool then set for HIGH SPEED COOLING ventilation.
DCV MINIMUM DAMPER POSITION AT LOW SPEED.
Only displays if unit is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using
2 speed with 1 heat and 1 cool then set for HEATING ventilation. If using
3 speed with 1 heat and 2 cool then set for LOW SPEED COOLING ventilation.
DCV MINIMUM DAMPER POSITION AT MEDIUM SPEED.
Only displays if unit is set for 3 speed with 1 heat and 2 cool. Set for
HEATING ventilation.
DCV MINIMUM DAMPER POSITION AT HIGH SPEED.
Only displays if unit is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using
2 speed with 1 heat and 1 cool then set for COOLING ventilation. If using
3 speed with 1 heat and 2 cool then set for HIGH SPEED COOLING ventilation.
ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only displayed when AUX1 O = ERV
Exhaust fan set point for single speed units. Based on OA Damper position
to activate power exhaust.
22
NOTES
is not used. IF using
2
is not used. IF using 2 speed
2
is not
2
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