Jade Range W7220 User Manual

Page 12

JADE

™

ECONOMIZER MODULE

62-0331—11

SETPOINTS MAT SET

53ºF

38 to 70 ºF;

increment by 1

The economizer will modulate the OA damper to maintain the

mixed air temperature at the setpoint.

LOW T LOCK

32ºF

-45 to 80 ºF;

increment by 1

Setpoint determines outdoor temperature when the mechanical

cooling cannot be turned on. Commonly referred to as the

Compressor lockout. At or below the setpoint the Y1-O and

Y2-O will not be energized on the controller.

DRYBLB SET

63ºF

48 to 80 ºF;

increment by 1

Setpoint determines where the economizer will assume outdoor

air temperature is good for free cooling; e.g.; at 63 ºF setpoint

unit will economizer at 62 ºF and below and not economize at

64 ºF and above. There is a a 2 ºF deadband.

ENTH CURVE

ES3

ES1, ES2, ES3,

ES4, or ES5

Enthalpy boundary “curves” for economizing using single

enthalpy.

See page 22 for description of enthalpy curves.

DCV SET

1100ppm

500 to 2000

ppm

increment by

100

Displays ONLY if a CO2 sensor is connected.

Setpoint for Demand Control Ventilation of space. Above the

setpoint, the OA dampers will modulate open to bring in

additional OA to maintain a space ppm level below the setpoint.

MIN POS

2.8 V

2 to 10 Vdc

Displays ONLY if a CO2 sensor is NOT connected. With 2-speed

fan units MIN POS L (low speed fan) and MIN POS H (high

speed fan) settings are required. Default for MIN POS L is 3.2V

and MIN POS H is 2.8V.

VENTMAX

2.8 V

2 to 10 Vdc

100 to 9990 cfm

increment by 10

Displays only if a CO2 sensor is connected.

Used for Vbz (ventilation max cfm) setpoint. VENTMAX is the

same setting as MIN POS would be if you did not have the CO2

sensor.

Displays 2 to 10 V if <3 sensors (RA,OA and MA).

In DCV CAL ENABLE AUTO mode dampers controlled by CFM

With 2-speed fan units VENTMAX L (low speed fan) and

VENTMAX H (high speed fan) settings are required. Default for

VENTMAX L is 3.2V and VENTMAX H is 2.8V.

VENTMIN

2.25 V

2 to 10 Vdc

100 to 9990 cfm

increment by 10

Displays only if CO2 sensor is connected.

Used for Va (ventilation min cfm) setpoint. This is the ventilation

for less than maximum occupancy of the space.

Displays 2 to 10 V if <3 sensors (RA,OA and MA). Va is only set

if DCV is used.

In DCV CAL ENABLE AUTO mode dampers controlled by CFM

With 2-speed fan units VENTMIN L (low speed fan) and

VENTMIN H (high speed fan) settings are required. Default for

VENTMIN L is 2.5V and VENTMIN H is 2.25V.

ERV OAT SP

32ºF

0 to 50 ºF;

increment by 1

Only when AUX1 O = ERV

EXH1 SET

50%

0 to 100%;

increment by 1

Setpoint for OA damper position when exhaust fan 1 is powered

by the economizer.

With 2-speed fan units Exh1 L (low speed fan) and Exh1 H (high

speed fan) settings are required. Default for Exh1 L is 65% and

Exh1 H is 50%

EXH2 SET

75%

0 to 100%;

increment by 1

Setpoint for OA damper position when exhaust fan 2 is powered

by the economizer. Only used when AUX1 O is set to EHX2.

With 2-speed fan units Exh2 L (low speed fan) and Exh2 H (high

speed fan) settings are required. Default for Exh2 L is 80% and

Exh2 H is 75%

Table 4. Menu Structure

. (Continued)

Menu

Parameter

Default

Value

Parameter

Range and

Increment

Notes