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Honeywell AQUATROL AQ25A42B User Operation And Maintenance
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Honeywell AQUATROL AQ25A42B User Operation And Maintenance

Honeywell AQUATROL AQ25A42B User Operation And Maintenance

Zone synchronizing programmable relay boiler controls
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AQUATROL Zone Synchronizing
Programmable Relay Boiler Controls
AQ25A
APPLICATION
The AQ25A series of AQUATROL
simplified control of single-temperature, residential hydronic
heating systems. The AQ25A easily converts a single zone
heating system into a room-by-room comfort control system,
or upgrades a basic, relay-logic zoning system to intelligent
"Zone of Greatest Demand" control with reduced boiler
cycling. AQ25A boiler controls can ensure ample supply of hot
water for both space heating and priority generation of
domestic hot water for bathing, dishes and laundry.
When AQ1000 communicating thermostats are used with the
AQ25A Zoning Modules, they can use the same wiring as
existing thermostats. Night setback operation can be
programmed from the AQ25A panel. Thanks to the network
communication capability of the AQ25A controls, AQ1000
thermostats in the home can display the actual outdoor
temperature when an outdoor sensor is connected to the
AQ25A Control Panel.
This AQUATROL AQ25A Control Panel was installed by a trained hydronic heating contractor.
To service this product, or for any questions relating to its installation, please contact:
Installing contractor: ________________________________________________________
Address: __________________________________________________________________
Phone: (_______) __________________________________________________________
™
Boiler Controls provides
This is a legacy product document
supported by Resideo. It is no
longer manufactured
USER OPERATION AND MAINTENANCE
WARNING
Risk of electrical shock.
Can cause severe injury, property damage or
death.
Only trained, experienced, licensed service
technicians should service this Control Panel. The
front cover of the AQ25A Control Panel should not
be removed, as this will expose the user to
potentially dangerous line voltage (120V)
electricity.
Congratulations!
The AQUATROL AQ25A installed on your heating system is
the most powerful, yet user-friendly hydronic heating control
system available on the market for residential and light
commercial installations.
This instruction sheet contains all the information you need to
program the comfort settings of the AQ25A and to customize
its operation for your home or business. For detailed
information on the operation of this control, please consult the
trained hydronic heating professional that installed the AQ25A
control.
Application ........................................................................
Familiarization with Control ..............................................
User Interface ..................................................................
LCD Display Panel Layout ................................................
Programming Instructions .................................................
Troubleshooting ................................................................
System Status and Error Codes .......................................
User Menu Structure .........................................................
CONTENTS
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69-2120-02

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Summary of Contents for Honeywell AQUATROL AQ25A42B

  • Page 1 AQUATROL Zone Synchronizing Programmable Relay Boiler Controls AQ25A This is a legacy product document supported by Resideo. It is no longer manufactured USER OPERATION AND MAINTENANCE WARNING Risk of electrical shock. Can cause severe injury, property damage or death. Only trained, experienced, licensed service technicians should service this Control Panel.
  • Page 2 AQUATROL ZONE SYNCHRONIZING PROGRAMMABLE RELAY BOILER CONTROLS Table 1. AQ25A Models Model Function Zones Zone Control AQ25A42B Programmable Relay Boiler Selectable DHW priority, with 2 – 16, Line voltage circulators or 2-wire zone Control Panel with integrated optional priority override in sets of 4 valves zoning...
  • Page 3 AQUATROL ZONE SYNCHRONIZING PROGRAMMABLE RELAY BOILER CONTROLS LCD Display Panel Layout NOTES: When setting times for the setback schedule, you The LCD on the AQ25A Control Panel is used to: must use the – or + button to change the time. —...
  • Page 4 AQUATROL ZONE SYNCHRONIZING PROGRAMMABLE RELAY BOILER CONTROLS Programming Instructions — The time display in 12 hour (e.g., 7:00 PM) or 24 hour format (e.g., 19:00). the AQ25A by using the keypad and LCD display to select — Date and time of day – allows building owner to reset parameters from the User Menu.
  • Page 5 AQUATROL ZONE SYNCHRONIZING PROGRAMMABLE RELAY BOILER CONTROLS changes temporarily, requiring the 2. Programming all days at the same time: temperature to be at a comfort level 24 • Select EDIT ALL DAYS from the Program Settings hours/day. sub-menu. UNOCC: In UNOCC mode, the AQ25A holds the •...
  • Page 6 AQUATROL ZONE SYNCHRONIZING PROGRAMMABLE RELAY BOILER CONTROLS TROUBLESHOOTING Upon restart, the AQ25A displays its clock settings as: YEAR = 2008, MONTH = JAN, DATE = 1. The message PLS SET DAY/TIME displays. This displayed message continues until Power Disruption the DATE and TIME OF DAY are updated. The AQ25A’s system and thermostat (zone settings) NOTE: If the power failure parameter is set to Backlight parameters are stored in non-volatile memory and are...
  • Page 7 AQUATROL ZONE SYNCHRONIZING PROGRAMMABLE RELAY BOILER CONTROLS Table 2. LCD Status Notices and Error Messages. (Continued) LCD Display Parameter Meaning NO RETURN PROBE No return sensor connected or it is defective. NO SUPPLY PROBE No supply sensor connected or it is defective. SHORT CYCLE PROT There is a call for heat, but less than two minutes have elapsed since the last firing of the boiler (prevents short cycling).
  • Page 8 FACTORY DEFAULT TIMES FOR MON THROUGH FRI. FACTORY DEFAULT TIMES FOR SAT AND SUN. M27770 Fig. 3. User Menu Structure. AQUATROL® is a registered trademark of Honeywell International Inc. Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North...

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