Honeywell AQ250 Series Product Data
Hydronic control panel
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Also See for AQ250 Series:
- Quick installation manual (16 pages) ,
- Technical reference booklet (304 pages)
Table of Contents
AQ250 Series Hydronic Control Panels
Need new photo of AQ250
PRODUCT DESCRIPTION
The AQ250 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. The boiler control of the AQ250 can ensure
ample supply of hot water for both space heating and priority
generation of domestic hot water for bathing, dishes and
laundry.
FEATURES
The AQ250 Series Hydronic Control Panels have the following
features:
• Zoning Control for up to four, single-stage zones or
two, two-stage zones as shipped; can be expanded to
a total of 16 zones with AQ255 or AQ257 expansion
zoning panels, and up to 64 zones by using up to three
AQ254 Add-a-Temperature expansion panels and
additional expansion zoning modules.
• Controls one boiler loop.
• Zone synchronization through Zone of Greatest
Demand control.
• Domestic hot water (DHW) priority and priority
override protection.
• Use with digital non-communicating thermostats or
AQ1000 2-wire polarity insensitive communicating
thermostats.
• Automated test feature for quick start-up and
simplified troubleshooting.
• Boiler freeze protection (in the event of network
communication failure).
• 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.
IMPORTANT
To ensure correct installation and proper operation of
the control, perform the 7 installation steps in the
order numbered in the "Contents" below.
Specifications ...................................................................
1 Installation Preparation ..................................................
2 Mounting ........................................................................
3 Wiring Procedure ...........................................................
4 Configure the Control Panel DIP Switches .................... 14
5 Test and Check Out the Installation ............................... 17
6 Purge Air from all System and Zone Piping .................. 19
Troubleshooting ................................................................ 19
PRODUCT DATA
Contents
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68-0306-05
Table of Contents
Related Manuals for Honeywell AQ250 Series
Summary of Contents for Honeywell AQ250 Series
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Page 1: Table Of Contents
AQ250 Series Hydronic Control Panels PRODUCT DATA FEATURES Need new photo of AQ250 The AQ250 Series Hydronic Control Panels have the following features: • Zoning Control for up to four, single-stage zones or two, two-stage zones as shipped; can be expanded to... -
Page 2: Specifications
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... -
Page 3: Installation Preparation
Refer to Fig. 1 on page 4. All AQ250 Control Panels consist of panel enclosure. Zoning Modules are available in either three functional components: 4-zone or 8-zone configurations. Refer to Honeywell 1. AQ10X38 transformer (power supply module), which literature Form No. 69-1981 for more information on connects to 120 Vac power and supplies 24 Vac power to these products. -
Page 4: Mounting
Mount the control panel on the wall: the AQ250 Control Panel. Install two top screws of the 1. Use the template supplied with the AQ250 Series Expansion Zoning Panel, ensuring it is level with the Control Panel to mark the four mounting holes for the adjoining Control Panel, and install two lower screws. -
Page 5: Wiring Procedure
AQ250 SERIES HYDRONIC CONTROL PANELS 4. For any additional Expansion Zoning Panels, repeat steps 1–3. WIRE CHANNEL PLUGS WIRE CHANNEL PLUGS M23733A Fig. 3. Orientation of wire channel plugs for creating pass-through wire channel and for joining Control Panel to Expansion Zoning Panels. - Page 6 AQ250 SERIES HYDRONIC CONTROL PANELS TO EXPANSION ZONING MODULES (IF INSTALLED) STEP 1 STEP 2 STEP 3 Boiler Aux. Boiler STEP 6 STEP 5 STEP 4 M29034A Fig. 4. Wiring sequence. Step 1 – Transformer Wiring Temperature Sensor Wiring Connect the lead wires of each sensor to the corresponding Factory pre-wiring of the Control Panels is shown as dotted terminals on top of the AQ15000B Control Module.
- Page 7 If Communication Bus Wiring shielded cable is used, Honeywell recommends the use of shielded cable with a continuous ground plane, All AQ2000 components communicate with each other on the AQUATROL network using communication bus wiring.
- Page 8 AQ250 SERIES HYDRONIC CONTROL PANELS Step 3 – Thermostats Wiring Step 4 – Zoning Equipment Wiring Because the Zoning Module of the AQ25042B Control Panel NOTE: The new AQ2000 panels will work with either digital can be used with either line voltage pumps or valves, or low...
- Page 9 Control Panel. This integral transformer has enough field wiring is required. power to operate 4 motorized zone valves (such as Honeywell V8043E valves or 4 valves using low- amperage draw, heat motor actuators, such as Honeywell MV100 actuators), plus power the electronics of the AQ250's Control Module and up to 16 AQ1000 thermostats.
- Page 10 AQ250 SERIES HYDRONIC CONTROL PANELS 100 VA TRANSFORMER 115 VAC 100 VA TRANSFORMER THERMOSTATS THERMOSTATS ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 1 ZONE 2 ZONE 3 ZONE 4 115 VAC 24 VAC USING AN AQ15740B USING AN AQ15540B...
- Page 11 AQ250 SERIES HYDRONIC CONTROL PANELS TO BOILER TERMINALS 11-12 ON TOP OF AQ15200B CONTROL MODULE L8124, L7224 JUMPERED AT FACTORY FROM LINE TO AUXILIARY DEVICE VOLTAGE 120V (INSTALLER-DEFINED) TERMINALS (N AND L) ON BOTTOM OF TRANSFORMER BOILER (HOT) PUMP R8184...
- Page 12 AQ250 SERIES HYDRONIC CONTROL PANELS 1. Boiler Pump NOTE: If the AQ250 is connected to a modulating condensing boiler, the DHW pump will probably need Connect the N and L wires of the boiler loop pump to the N and to be connected to the boiler, not the AQ250.
- Page 13 AQ250 SERIES HYDRONIC CONTROL PANELS Step 6 – Connection To Line Voltage Power CAUTION Connect the N and L line voltage inputs of the primary on the AQ250 transformer to the electrical distribution panel and Electrical Shock or Equipment Damage Hazard.
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Page 14: Configure The Control Panel Dip Switches
DIP Switch Configuration DIP SWITCHES AQ250 Control Module DIP Switch Settings Only two steps are required to set up the AQ250 Series Control AQ250 Control Panels come from the factory with pre-defined Panel: settings for all DIP switches. These factory default settings 1. - Page 15 AQ250 SERIES HYDRONIC CONTROL PANELS Table 2. AQ15000B Control Module DIP switch arrangement DIP Switch Switch Description Label and Factory Settings AQ15000B Diagnostic Diagnostic Test Test DHW Device: Pump or Valve DHW Priority: Off or Priority DHW Priority Override: Off or O/Ride (override) Boiler post purge location: Off = zones only;...
- Page 16 AQ250 SERIES HYDRONIC CONTROL PANELS Table 3. AQ15540B Zoning Module (Pump Zoning Module) DIP Switch Arrangement. Switch Switch Description Label and Factory Settings Zone Address: The positions of these 4 DIP switches define the unique address for each zone on the AQUATROL network. For each group of 4 zones, there can be only AQ15540B one DIP switch in the right hand (On) position.
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Page 17: Test And Check Out The Installation
AQ250 SERIES HYDRONIC CONTROL PANELS 5 TEST AND CHECK OUT THE 5. Pressing the Test button at any time during the Auto Test routine pauses the routine indefinitely. While paused, the INSTALLATION Diagnostic LED blinks slowly. 6. Pressing the Test button while the Auto Test routine is... - Page 18 AQ250 SERIES HYDRONIC CONTROL PANELS Checkout 4. Pressing the Test button at any time during the Auto Test routine pauses the routine indefinitely. While paused, the 1. If present, turn down the DHW Aquastat to avoid interfer- Diagnostic LED blinks slowly.
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Page 19: Purge Air From All System And Zone Piping
Control Module), the Zoning Module operates its pumps or valves in a conventional, non- After the AQ250 Series Control Panel and any AQ255/AQ257 synchronized zoning fashion. That is, it operates according to Expansion Zoning Panels have been set up and the entire... - Page 20 Communication lost with ALL Check thermostat wiring to Zoning pause thermostats Modules. AQUATROL® is a registered trademark of Honeywell International Inc. Aquastat® is a registered trademark of Honeywell International Inc. Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North ®...