Honeywell AQ254 Catalog Page

AQUATROL Zoning System

Product Number

* AQ25242B/U Zone pumps or 2-wire

* AQ25244B/U Zone valves with end

* TRADELINE models • SUPER TRADELINE models

Type of Zoning Devices Controlled

valves (line voltage)

switches

Number of Zones Controlled

4 120 Vac/250 Vac 5A,

Boiler Pump Output Rating Replacement Parts

1/3HP

AQ15200B universal injection/mixing boiler reset module; AQ12C11 supply/return/mixed loop sensor; AQ12C10 outdoor sensor; AQ10X38 24 Vac 38 VA transformer; AQ15540B 4-zone pump expansion module

AQ15200B universal injection/mixing boiler reset module; AQ15740B 4-zone valve with end switch expansion module; AQ12C11 supply/return/mixed loop sensor; AQ12C10 outdoor sensor; AQ10X38 24 Vac 38 VA transformer

AQ254 Add-a-Temperature Injection/Mixing Expansion Control Panel for Hydronic Zoning System

expands the total network capacity by up to 16 zones when used with AQ255 and/or AQ257 zoning panels.

• Acts as an add-on Control panel to the Main (AQ250, AQ25A, AQ251, AQ252) Control panel.

• Allows each of the 16 zones connected to it to be assigned to the system's primary or secondary loop.

• Up to 3 AQ254 panels can be added to a Main (AQ250, AQ25A, AQ251 or AQ252) Control panel.

• Mixed loop temperature is controlled by a variable speed injection pump or motorized mixing valve connected to the AQ254.

• Intuitive programming interface and armchair programming (can be programmed at your desk and taken to the job site “ready-to-install”)

• Customizable mixing control settings allow for greater level of control

The AQ254 Add-a-Temperature Expansion Control Panel is used in conjunction with an AQ250, AQ25A, AQ251 or AQ252 Control Panel. It provides one additional loop temperature control capability for the AQ2000 control panel it is connected to and

Application: Expanded zone control and mixed loop temperature

control in a hydronic zoning system Mixed loop target temperature is reset by either outdoor temperature or calculated system load based on indoor temperature feedback Mixing is target controlled by a variable speed injection pump or motorized mixing valve

Dimensions, Approximate: 9 1/2 in wide x 8 in. high x 3 3/8 in. deep

(24 cm wide x 20.3 cm high x 8.5 cm deep)

Powe r Sup ply: 120V/60Hz User Interface (Setting, Programming): (LCD Display and a 3 button

Key Pad)

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)

Thermostat Compatibility: AQ1000 Series 2-wire communicating

thermostats and most digital thermostats

Variable Speed Injection Pump Output: Triac modulated; 120 Vac,

2.1A, 1/6HP

Secondary Pump Output Rating: 120 Vac 5A, 1/3HP Auxiliary Pump Output Rating: Dry contact output, 120 Vac/250 Vac

5A, 1/3 HP

and comfort.

• Zone synchronization through Zone of Greatest Demand control.

• Integral 38 VA transformer with self resetting electronic fuse.

Sensor Temperature Rating: -58 F to +230 F (-50 C to +110 C) Secondary Loop Mixing (Supply) Design Temp Range: 70 F to 210

F (21 C to 99 C)

Secondary Loop Mixing (Supply) Max Control Temp Range: 80 F to

210 F (27 C to 99 C)

Secondary Loop Return Min Control Temp Range: 80 F to 180 F (27

C to 82 C)

Secondary Loop Mixing (Supply) Min Control Temp Range: 35 F to

150 F (2 C to 66 C)

B-B Communication Bus Terminals: Low voltage, Class II, 2-wire

polarity-insensitive, digital communicating link to other Control or Zoning modules.

R-C Input (on Control and Zoning Modules): 24 Vac Class II (input

on Control and Zoning Modules)

R-C Output (on transformer): 38 VA, 24 Vac Class II Operating Humidity Range (% RH): 5 to 90% RH, non-condensing Weight: 3.9 lbs (1.8 kg) Approvals Canadian Standards Association: CSA C/US Certified to CSA and

UL Standards, File No. LR76030

Controls

Hydronic

Product Number Mixing Valve Floating Output (Com,O,C) Replacement Parts

* AQ25400B 24Vac rated dry contacts AQ15400B Add-A-Temperature expansion control module;

* TRADELINE models • SUPER TRADELINE models

70-6910 189

AQ12C11 supply/return/mixed loop sensor; AQ10X38 24 Vac 38 VA transformer