Honeywell AQ25A Series Technical Reference Booklet page 108

AQ252 Universal Injection/Mixing Boiler Reset Control Panels
• Use with digital non-communicating thermostats or
AQ1000 2-wire polarity insensitive communicating
thermostats. Note: When using non-communicating
thermostats, the following features are not available:
• Outdoor temperature is not displayed on the
thermostat.
• Time clock on AQ1000TP2 will not synchronize
with the Control Module.
• Central programming, vacancy and setback
schedules of AQ1000 from AQ panel are not
enabled.
• AQ panel will not display individual zone
temperatures.
• 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").
• Automated test and purge feature for quick start-up
and simplified troubleshooting.
• Boiler freeze protection and single-zone freeze
protection.
• Pump/valve exercise.
• Boiler short cycling protection, post purge, and shock
prevention from cold water returning to boiler.
• Line or low-voltage output for zoning equipment
(pumps or valves).
• Integral 38 VA transformer with self resetting
electronic fuse.
• 4 hour power supply (super capacitor) retains day and
time settings during power outage and a non-volatile
EPROM memory retains program settings during
power outage.
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.
69-1986—02
SPECIFICATIONS
The AQ252 Control Panels and corresponding attached
equipment are listed in Table 1.
Table 1. AQ252 Series Control Panel Models.
Control Panel
AQ25242B
AQ25244B
Application: Controls one boiler and one mixed temperature
loop (using either a variable-speed injection pump or
motorized valve mixing), 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 Output Rating: Dry contact output,
120/250 Vac 5A, 1/3 HP
Auxiliary Low Voltage Output Rating: 24 Vac, 0.5A,
12VA
Boiler (T-T) Output Rating: 24 Vac, 0.5A, 12VA
Boiler Pump (C1-C2) Output Rating: 120 Vac 5A, 1/3HP
DHW Pump/Valve Output Rating: 120 Vac 5A, 1/3HP
Secondary Pump Output Rating: 120 Vac 5A, 1/3HP
Variable-Speed Injection Pump Output: Triac
modulated; 120 Vac 2.1A, 1/6HP
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
Environmental Ratings:
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
2
Corresponding Corresponding
Control Module Zoning Module
AQ15200B AQ15540B
AQ15200B AQ15740B