Справочник Пользователя для Jade Range W7220
JADE™ ECONOMIZER MODULE
62-0331—07
8
Fig. 8. Single Enthalpy curves and boundaries.
Power Up
After the module is mounted and wired, apply power.
Power Up Delay
Upon power up (or after a power outage or brownout), the
W7220 controller module begins a 5 minute power up delay
before enabling mechanical cooling.
Initial Menu Display
On initial start up,
Honeywell displays on the first line and
Economizer W7220 on the second line. After a brief pause,
the revision of the software appears on the first line and the
second line will be blank.
Power Loss (Outage or Brownout)
All setpoints and advanced settings are restored
a
after any
power loss or interruption.
NOTE: If power goes below 18 Vac, the W7220 controller
module assumes a power loss and the 5 minute
power up delay will become functional when
power returns above 18 Vac.
TROUBLESHOOTING
Alarms
The Economizer module provides alarm messages that
display on the 2-line LCD.
NOTE: Upon power up, the module waits several sec-
onds before checking for alarms. This allows
time for all the configured devices (e.g. sensors,
actuator) to become operational. If one or more
alarms are present and there has been no keypad
activity for at least 5 minutes, the Alarms menu
displays and cycles through the active alarms.
You can also navigate to the Alarms menu at any time.
ECONOMIZING
AVAILABLE
NOT AVAILABLE
TEMPERATURE
ABSOLUTE HUMIDITY
RA
TEMP
RA
HU
M (
%R
H)
ENTHALPY
ES4
ES3
ES2
ES1
HL
P2 (T,RH)
DUAL ENTHALPY
HIGH LIMIT
SINGLE ENTHALPY
ES5
P1
(T,RH)
M32286
Table 1. Single Enthalpy and Dual Enthalpy High Limit Curves.
Enthalpy
Curve
Temp.
Dry-Bulb (°F)
Temp.
Dewpoint (°F)
Enthalpy
(btu/lb/da)
Point P1
Point P2
Temp. °F
Humidity %RH
Temp. °F
Humidity %RH
ES1
80.0
60.0
28.0
80.0
36.8
66.3
80.1
ES2
75.0
57.0
26.0
75.0
39.6
63.3
80.0
ES3
70.0
54.0
24.0
70.0
42.3
59.7
81.4
ES4
65.0
51.0
22.0
65.0
44.8
55.7
84.2
ES5
60.0
48.0
20.0
60.0
46.9
51.3
88.5
HL
86.0
66.0
32.4
86.0
38.9
72.4
80.3
a
All settings are stored in non-volatile flash memory.