W6215, W7215, W7460 ECONOMIZER LOGIC MODULES
3
63-2544—3
Table 1. W6215, W7215, and W7460 Economizer Models.
NOTE: All models include minimum and maximum position potentiometers, setpoint for enthalpy or dry-bulb, and ISI setpoint.
INSTALLATION
When Installing this Product...
1.
Read these instructions carefully. Failure to follow
them could damage the product or cause a hazardous
condition.
2.
Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3.
Installer must be a trained, experienced service
technician.
4.
After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
IMPORTANT
All wiring must agree with applicable codes,
ordinances and regulations.
Location and Mounting
W6215, W7215, W7460 Economizer Logic Module
W6215, W7215, and W7460 Logic Modules mount directly on
a sheet metal duct or panel. When planning the installation,
allow enough clearance for maintenance and service. Mount
device in a location protected from rain, snow, and direct
sunlight. Secure device to sheet metal using the three supplied
mounting screws, see Fig. 2.
NOTE: See Fig. 3 for representative locations of connected
system devices.
C7400 Enthalpy Sensor and
C7650 Dry Bulb Temperature Sensor
W6215,W7215,W7460 Logic Modules accept signals from
either the C7400 Enthalpy Sensor or the C7650 Dry Bulb
Temperature Sensor. The wiring is the same for either sensor.
IMPORTANT
When using differential sensing, both sensors must
be of the same type (enthalpy or dry bulb).
OUTDOOR AIR SENSING
1.
Mount sensor in any orientation that exposes it to freely
circulating air and protects it from rain, snow, and direct
sunlight.
2.
Connect it to the S
O
and + terminals of the device.
RETURN AIR SENSING
1.
Ensure differential enthalpy control has a second
sensor in the return air duct.
2.
Connect this sensor to the S
R
and + terminals of the
W6215, W7215, or W7460.
Fig. 2. Mounting W6215, W7215, W7460 on sheet metal.
Indoor Sensor Input
The ISI can be any sensor that provides a 2-10 Vdc output.
The ISI modulates the outdoor damper to provide ventilation
based on occupancy. The designer determines contaminants
to monitor, selects appropriate sensor, determines the sensor
threshold, and adjusts the ISI potentiometer accordingly. The
ISI LED lights when the ISI signal is above setpoint. Mount the
sensor according to the manufacturer specifications. If not
available, use the following guidelines:
1.
Mount sensor in an area with unobstructed air circulation.
2.
Connect it to the AQ
and AQ1 terminals of the W6215,
W7215, or W7460 (see Wiring section for details).
3.
Adjust the ISI potentiometer setpoint to correspond to
ISI voltage output at the threshold.
IMPORTANT
Ensure proper polarity of sensor connections.
Incorrect polarity negates the sensor signal.
Model
For Use
with Actuator
Discharge Air
Temperature Input
Outdoor Sensor
Input (OSI) Setpoint
Exhaust
Fan Setpoint
Purge
W6215A
Honeywell Series 62
C7150B or C7046A Sensor No
Adjustable
Yes
W7215A
Honeywell Series 72
C7150B or C7046A Sensor No
Adjustable
Yes
W7215B
Honeywell Series 72
C7150B or C7046A Sensor Yes
Fixed
No
W7460A
Honeywell M7415
C7150B or C7046A Sensor No
Adjustable
Yes
W7460B
Honeywell M7415
C7150B or C7046A Sensor Yes
Fixed
No
M11790
W6210 A 1003