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QUICK INSTALLATION GUIDE
69-1982
AQ250 Series Hydronic Control Panels
10 QUICK INSTALLATION STEPS TO
SETTING UP AN AQ250 SERIES
CONTROL PANEL
1. Check you have all the necessary equipment for
a successful installation
2. Read all instructions carefully before
proceeding
3. Familiarize yourself with the AQ250 Control
Panel
4. Mount Control Panel on the wall, along with any
Expansion Zoning Panels
5. Mount thermostats in the zones
6. Wire all system components to the Control
Panel
7. Configure the Control Panel's DIP switches
8. Test and Check Out the Installation
9. Purge the air from all zone piping using the
AQ250 built-in Purge Routine feature
10. Document and keep a record of all system
settings
CONTENTS
1 Check You Have All the Necessary Equipment .............
2
2 Read All Instructions Carefully Before Proceeding .......
3 Familiarize Yourself With the Control Panel ..................
2
4 Mount Control Panel On The Wall,.................................
3
5 Mount Thermostats In The Zones .................................
6 Wire All System Components To The Control Panel .....
7 Configure The Control Panel's DIP Switches ................ 10
8 Test and Check Out the Installation ............................... 12
9 Purge Air using the built-in Purge Routine feature ........ 18
10 Document and Keep A Record Of All System Settings 14
Appendix ......................................................................... 15
Troubleshooting ............................................................... 15
NOTE
Throughout these instructions, the following terminology
conventions are used:
• The term “AQ250” is used when the information
applies to both the AQ2504B2 and AQ2504B4 Con-
trol Panels. Where there are specific instructions or
details relating to the “-4B2” or “-4B4” Control Pan-
els, the full model number (i.e. AQ2504B4) is used;
• The term “Control Panel” refers to an assembled
product, consisting of a transformer, Control Module
and Zoning Module, all contained within an AQ2000
panel enclosure;
• The term “AQ255” refers to all of the AQ2554P2X,
AQ2558P2X and AQ2554V2 Expansion Zoning Pan-
els and “AQ257” refers to the AQ2574V4 Expansion
Zoning Panel. Where there are specific instructions
or details relating to the “-4P2X”, “-8P2X”, “-4V2”, or
“-4V4” Expansion Zoning Panels, the full model num-
ber (i.e. AQ2574V4) is used;
• The term “Expansion Zoning Panel” refers to an
assembled product, consisting of a Zoning Module
and—if applicable—a transformer, contained within
an AQ2000 panel enclosure; Zoning Modules are
available in either 4-zone or 8-zone configurations.
Refer to Honeywell literature Form No. 69-1981 for
more information on these products.
• The term “AQ1500” refers to the AQ1500B0 Control
Module;
• The term “Control Module” refers to the component
within an AQ2000 Series Control Panel that performs
the “master control operations”. See Table 1 for spe-
cific models.
• The term “Zoning Module” refers to the component
within an AQ2000 Series Control Panel or Zoning
Expansion Panel.
• The term “AQ155” refers to the AQ1554P2 Zoning
Module and “AQ157” refers to the AQ1574V4 Zoning
Module.
Table 1.
Control Panel
Corresponding
Control Module
Corresponding
Zoning Module
AQ2504B2
AQ1500B0
AQ1554P2
AQ2504B4
AQ1500B0
AQ1574V4