MicroMetl ECD-SRTCB-D2 - Page 9

Since 1965
MicroMetl
0
500
1000
1500
2000
2500
0 0.05 0.1 0.15 0.2 0.25 0.3
RELIEF FLOW (CFM)
RETURN DUCT STATIC PRESSURE (in. wg)
ECD-SRT12CA-D2*H
ECD-SRT34CA-D2*H
and
ECD-SRT05CA-D2*H
0
1000
2000
3000
4000
5000
6000
0
RETURN AIR FLOW (CFM)
0.1 0.2 0.3 0.4
RETURN DUCT STATIC PRESSURE DROP (in. wg)
ECD-SRT12CA-D2*H
ECD-SRT34CA-D2*H
ECD-SRT05CA-D2*H
Barometric Relief Flow Capacity
Step 20: After powering controller, program the Jade W7220
controller per the instructions to follow.
See 9901-2022 Sensor Dip Switch Settings for summarized
controller set up instructions.
After all settings have been made, re-install the unit control box
panel. See Figure 5. Economizer performance charts are
below. See base unit installation manual to make adjustments to
meet building ventilation requirements.
USE
DIP SWITCH POSITIONS FOR SWITCHES 1, 2, AND 3
123
DA OFF ON OFF
RA ON OFF OFF
OA OFF OFF OFF
DA - Discharge Air (not used on economizer)
RA - Return Air
OA - Outside Air
Default Setting = OFF-OFF-OFF
9901-2022 Sensor Dip Switch Settings
Return Air Pressure Drop
ECONOMIXING
AVAILABLE
NOT AVAILABLE
TEMPERATURE
ABSOLUTE HUMIDITY
RA TEMP
R
A
H
U
M
(
%
R
H
)
ENTHALPY
ES4 ES3 ES2 ES1 HL
P2 (T,RH)
DUAL ENTHALPY
HIGH LIMIT
SINGLE ENTHALPY
ES5
P1
(T,RH)
Enthalpy Curve Boundaries
9901-2022 SINGLE OUTSIDE AIR ENTHALPY SENSOR
When using the 9901-2022 (Honeywell C7400S) enthalpy sensor
(See Enthalpy Curve Boundaries) for outside air changeover, the
existing 9901-2021 (Honeywell C7250) dry bulb sensor must be
removed if applicable. When the enthalpy sensor is OA
temperature, enthalpy and dew points are below the respective
setpoints, the outside air can be used for free cooling. When any of
these is above the setpoint, free cooling will not be available. The
Enthalpy Curve Boundaries shows the enthalpy boundaries in the
W7220 Jade Controller.
There are 5 enthalpy boundaries (setpoints ES1 thru ES5), which
are defined by dry bulb temperature, enthalpy, and dew point. ES3
is the default setting. The High limit Curves showed below for
each setting.
Important: to use the 9901-2022 sensor for outside air sensor, the
dipswitches on the sensor must be set to OFF-OFF-OFF.
The 2 gray wires with a plug from the economizer harness in the
return chamber plug directly into the 9901-2022 enthalpy sensor.
7