Specifications - Honeywell AQ25A Series Technical Reference Booklet

AQ251 SERIES BOILER RESET CONTROL PANELS
• Individual zone freeze protection.
• Allows display of outdoor temperature on all AQ1000
thermostats when used with an AQ12C10 outdoor
sensor (included).
• Intuitive programming interface (can be programmed
at your shop and taken to the job site "ready-to-
install").
• Pump/valve exercise.
• Line or low-voltage output for zoning equipment
(pumps or valves).
• Integral 38 VA transformer with self resetting
electronic fuse.
• Automated test and purge feature for quick start-up
and simplified troubleshooting.
• Two hour power supply module (super capacitor)
retains day and time settings during power outage and
a non-volatile EPROM memory retains program
settings during power outage.

SPECIFICATIONS

The AQ251 Control Panels and corresponding attached
equipment are listed in Table 1.
Table 1. AQ251 Series Control Panel Models.
Corresponding
Control Panel Control Module
AQ25110B AQ15100B
AQ25142B AQ15100B
AQ25144B AQ15100B
Application: Controls one boiler, as well as domestic hot
water (DHW) management and zoning operation in a
hydronic zoning system.
Power and Electrical Ratings:
Power Supply: 120 Vac / 60Hz
Auxiliary Pump Contact Rating: 120 to 240 Vac, 5A, 1/3
HP
Auxiliary Low Voltage Contact Rating: 24 Vac, 0.5A,
12VA
Boiler (T-T) Contact Rating: 24 Vac, 0.5A, 12VA
Boiler Pump (C1-C2) Output Rating: 120 Vac 5A, 1/3HP
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
69-1974—04
Environmental Ratings:
Temperature Ratings:
Corresponding
Zoning Module
none
AQ15540B
AQ15740B
Inputs/Outputs:
2
DHW Pump/Valve Output Rating: 120 Vac 5A, 1/3HP
B–B Communication Bus Terminals: Low voltage,
Class II, 2-wire polarity-insensitive, digital
communicating link to other Control or Zoning modules
Electrical Connections (Line Voltage): Wire-clamp
screw terminals; maximum 2 x 14 AWG each on line
voltage terminals
Control and Zoning Panel Temperature Rating: 32°F to
130°F (0°C to 55°C)
Operating Humidity Range (% RH): 5 to 90% RH, non-
condensing
Boiler Design Temperature: 80°F to 210°F (26°C to
99°C)
Boiler Differential: 2°F to 41°F (1°C to 23°C), or Auto
Boiler High Limit Control Temperature: OFF, 120°F to
225°F (OFF, 49°C to 107°C)
Boiler Low Limit Control Temperature: OFF, 60°F to
180°F (OFF, 15°C to 82°C)
Outdoor Low Design Control Temperature: -60°F to
32°F (-51°C to 0°C)
Boiler Minimum Return Control Temperature: OFF,
80°F to 180°F (OFF, 27°C to 82°C)
Sensor Temperature Rating: -58°F to 230°F (-50°C to
110°C)
Warm Weather Shut Down (WWSD) Temperature:
OFF, 35°F to 100°F (OFF, 1°C to 38°C)
Cold Weather Shut Down (CWSD) Temperature: OFF,
32°F to 100°F (OFF, 0°C to 38°C)
Auxiliary (Demand) Input: External dry contacts
connection only
DHW Demand Input: External dry contacts connection
only
R–C Input (on Control and Zoning Modules): 24 Vac
Class II
R–C Output (on transformer): 38 VA, 24 Vac Class II
Heat Demand Input External dry contacts connection
only
Modulating Output: 0-10 or 2-10 Vdc for variable speed
pump or modulating boiler