AQ25242B/U

Specifications

Application

Controls one boiler and one mixing (either variable speed injection or floating valve mixing) loop in a hydronic zoning system.

Dimensions (in.)

16 1/2 in wide x 8 in. high x 3 3/8 in deep

Dimensions (mm)

42 cm wide x 20.3 cm high x 8.5 cm deep

Weight (lb)

6.0 lbs

Weight (kg)

2.7 kg

Approvals, Canadian Standards Association

CSA C/US Certified to CSA and UL Standards, File No. LR76030

Tradeline Value

Tradeline

Thermostat Compatibility

AQ1000 Series 2-wire communicating thermostats and most digital thermostats

Setback Program

7 day, up to 2 setback periods/day.

User Interface

LCD Display and a 7 button Key Pad

Number of Zones

4

Zoning Devices Controlled

Zone pumps or 2-wire valves (line voltage)

Boiler Control Temperature (F)

Supply--Max: OFF, 120F to 225 F; Min: OFF, 59F to 180F; Differential--2 F to 41 F or Auto (minimum 2 minutes on time)

Boiler Control Temperature (C)

Supply--Max: OFF, 49C to 107 C; Min: OFF, 15C to 82C; Differential--1 C to 23 C or Auto (minimum 2 minutes on time)

Boiler Design Temperature (F)

80F to 210F

Boiler Design Temperature (C)

26C to 99C

Outdoor Low Design Control Temperature (F)

-60F to 32F

Outdoor Low Design Control Temperature (C)

-51 C to 0 C

Return Min. Control Temperature (F)

80 F to 180 F

Return Min. Control Temperature (C)

27C to 82C

Boiler Heat Post Purge

Off, 10 seconds to 30 minutes (factory default is 30 seconds)

Pump/Valve exercise

30 seconds per 2 weeks of space heating inactivity

R-C Output (on transformer)

38 VA, 24 Vac Class II

R-C Input (on Control and Zoning Modules)

24 Vac Class II (input on Control and Zoning Modules)

Demand Input

Heat Demand (Thermostat R-W), Auxiliary Demand, and DHW Demand--External dry contacts connection only

B-B Communication Bus Terminals

Low voltage, Class II, 2-wire polarity-insensitive, digital communicating link to other Control or Zoning modules.

Zone Module Thermostat Input

Low voltage, Class II, 2-wire polarity-insensitive, digital communicating with power link to AQ1000 series thermostat.

Output Ratings

Boiler (T-T)-- 24 Vac, 0.5A, 12VA; Auxiliary Low Voltage-- 24 Vac, 0.5A, 12VA; Boiler Pump-- 120 Vac/250 Vac 5A, 1/3HP; DHW Pump/Valve-- 120 Vac 5A, 1/3HP; Auxiliary Pump-- Dry contact output, 120 Vac/250 Vac 5A, 1/3 HP

Zone Output Contact Rating

Pumps: 120 Vac/250 Vac, 5A, 1/3 HP,Valves: 24 Vac, 0.5 A, 12 VA

Mixing Valve Floating Output (Com,O,C)

24 Vac rated dry contacts

Mixing Valve Modulating Output

0-10 Vdc

Secondary Pump Output Rating

120 Vac 5A, 1/3HP

Variable Speed Injection Pump Output

Triac modulated; 120 Vac, 2.1A, 1/6HP

Electrical Connections

Wire-clamp screw terminals, Maximum 2 x 14 AWG each on line voltage terminals

Operating Humidity Range (% RH)

5 to 90% RH, non-condensing

Secondary Loop Temperature Range (F)

Mixing (Supply) max control--80 F to 210 F; Mixing (Supply) min control--35 F to 150 F; Mixing (Supply) Design Temperature--70 F to 210 F; Return min control--80 F to 180 F

Secondary Loop Temperature Range (C)

Mixing (Supply) max control--27 C to 99 C; Mixing (Supply) min control--2 C to 66 C; Mixing (Supply) Design Temperature--21 C to 99 C; Return min control--27 C to 82 C

WWSD (Warm Weather Shut Down) Temperature (F)

Off, 35 F to 100 F

WWSD (Warm Weather Shut Down) Temperature (C)

Off, 1 C to 38 C

Sensor

Supply/Return Sensor--10 kilohm NTC thermistor at 25 C (77 F) ±0.5F (±0.3C) up to 500 ft (150 M) using 18 AWG or larger wire, Lead Length: 10 ft. (3050 mm); Outdoor Sensor--10 kilohm NTC thermistor at 25 C (77 F) ± 0.5F (±0.3C) up to 500 ft (150 M) using

Replacement Parts

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

Temperature Ratings (C)

Panel--0 C to 55 C; Sensor-- -50 C to +110 C

Temperature Ratings (F)

Panel--32 F to 130 F; Sensor-- -58 F to +230 F

Supply Voltage

120V 60 Hz

Documents