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Programming the W7220 Controller
The next several pages detail the different status displays, set
points, setup, and alarms available on the controller. The list below
and Table 10 summarize the inputs required for a standard
application with a single outside air sensor.
NOTE: Instead of setting the SETPOINTS, you can use the
defaults already set in the controller – see default settings below.
See Table 10 for summarized standard settings or, for more detail,
see Table 11 – Menu Structure.
SETPOINTS
•
MAT SET: This sets the mixed air temperature (MAT)
setting. The controller has a default of 53°F, but the range
is anywhere from 38°F to 70°F.
•
LOW T LOCK: This setting locks out the compressor (or
mechanical cooling) at a given temperature. The default is
32°F, but the controller's range is from –45°F to 80°F.
•
DRYBULB SET: If you have an economizer with a dry
bulb outside air sensor, you will see and set the
DRYBULB SET. The default setting is 63°F but the
controller's range is 48°F to 80°F.
•
ENTH CURVE: If you have a single enthalpy outside air
sensor instead of a dry bulb, you will see and set the ENTH
CURVE setting. There are 5 setting options: ES1 thru ES5.
Check Table 7 for the limits for each of these settings. ES3
is the default setting.
•
MIN POS: The minimum position allows for ventilation even
when not in the free-cooling mode. If you have a single speed
unit there will be only one minimum position setting. The de-
fault is 4.4 volts, but the range is 2 to 10 vdc.
•
MIN POS H and MIN POS L: If your unit is 2 speed, there
will be 2 minimum position settings that show up on the
menu. The first is MIN POS H (for high speed), which has a
default of 4.4-v. The second is MIN POS L (for low speed),
which has a default of 6.0-v. Note that MIN POS H and
MIN POS L are only displayed if under SYSTEM SETUP,
AUX2 IN is set to "W1", and FAN TYPE is set to 2 speed.
FOR SINGLE SPEED UNIT
CONTROLLER
MENU ITEM
DEFAULT
MAT SET
53°F
LOW T LOCK
32°F
DRYBLB SET
63°F
ENTH CURVE
ES3
MIN POS
4.4 vdc
MIN POS H
n/a
MIN POS L
n/a
INSTALL
1/1/2010
EQUIPMENT
CONV
AUX2 IN
W
FAN TYPE
2 speed
AUX1 OUT
NONE
OCC
INPUT
n/a — Not applicable
NOTES:
1. For 2 speed unit, under SYSTEM SETUP: EQUIPMENT= CONV,
AUX2 I = W, and FAN TYPE = 2 SPEED
2. More sophisticated controller setups, including for DCV or power
exhaust, are available by referring to Table 11 options
3. Fan speed options are:
1) 1 Speed
2) 2 Speed
3) 2 Speed: 1 Heat, 1 Cool.
4) 3 Speed: 1 Heat, 2 Cool.
4. Do not use 3 speed setting for LC units.
Table 10 — Standard W7220 Controller Configuration
FOR 2 SPEED UNIT
SET TO:
DEFAULT
38°F to 70°F
53°F
–45°F to 80°F
32°F
48°F to 80°F
63°F
ES1 to ES5
ES3
2 to 10 vdc
n/a
n/a
4.4 vdc
n/a
6.0 vdc
Current date
1/1/2010
CONV
CONV
W
W
1 speed
2 speed
SYS
NONE
INPUT
INPUT
SYSTEM SETUP
•
INSTALL: Allows you to set the current date. Use the
keypad buttons to scroll to the correct date.
•
EQUIPMENT: Always set to CONV even if the unit is a
heat pump.
•
AUX2 IN: Always set to W.
•
FAN TYPE: Set for either single speed or 2 speed. The
default setting is 2 speed.
•
AUX OUT: If remote Fault Detection and Diagnostic
(FDD) monitoring is required, select SYS.
OCC: occupancy, always set to INPUT
Menu Structure
Table 11 illustrates the complete hierarchy of menus and parame-
ters for the EconoMi$er X system.
The Menus in display order are:
•
STATUS
•
SETPOINTS
•
SYSTEM SETUP
•
ADVANCED SETUP
•
CHECKOUT
•
ALARMS
IMPORTANT: Table 11 illustrates the complete hierarchy.
Menu parameters may be different depending on configuration.
For example, none of the DCV parameters appear for a system
that does not have a DCV (CO
IMPORTANT: The default setting on the W7220 controller is
for a "Fan Type" with 2 speed, which is correct for 2 or 3
speed units (48/50LC 07-12). For a 1 (single) speed unit, the
setting under SYSTEM SETUP > FAN TYPE must be
changed to 1 speed.
SET TO:
38°F to 70°F
–45°F to 80°F
48°F to 80°F
Only displayed if using single DB OA sensor
ES1 to ES5
Only displayed if using a single enthalpy OA sensor
n/a
Only displayed if set up for single speed unit
2 to 10 vdc
Only displayed if set up for 2 speed unit
2 to 10 vdc
Only displayed if set up for 2 speed unit
Current date
CONV
Always set to CONV, even on HP units
W
Always set to W
2 speed
See Note 3
SYS
Set to SYS for remote FDD monitoring
INPUT
Always set to INPUT
19
) sensor.
2
NOTE
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