PRODUCT DATA
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved 63-4046—1
W7100G
Discharge Water
Temperature Control
APPLICATION
The microprocessor-based W7100G Discharge Water
Temperature Control maintains an average discharge
water temperature for reciprocating chiller applications, by
staging on and off compressors or unloaders as required.
The W7100 can provide up to 10 stages of cooling using a
W7101 Satellite Sequencer.
FEATURES
• Up to six stages of cooling provided.
• Expandable system up to 10 cooling stages using a
W7101.
• Advanced proportional plus integral microprocessor
control algorithm minimizes droop.
• Soft start to minimize compressor cycling during
system start up.
• Adjustable minimum on/off timing and time delay
between stages of either 30 or 60 seconds.
• Adjustable setpoint from 10 to 110°F (-12 to 43°C).
• Adjustable reset differential from 5 to 20°F (3 to 11K).
• Adjustable control band from 0 to 10°F (0 to 6K).
• Reset signal from either an outdoor air or space
sensor.
• C7170 sensor can be used for sensing water
temperature.
• LED show which stages of cooling are energized.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 3
Operation .......................................................................... 6
Settings and Adjustments ................................................. 8
System Checkout ............................................................. 9
Troubleshooting ................................................................ 10
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