The
Aquatrol 2000 controller is the central component for a
single zone low pressure hot water heating system. It
FEATURES
provides self adaptive heating curve, optimum start/stop
operation, sequence control of two boilers, outside air
compensated mixed water control using a 3-port motorised
valve and pump, and domestic hot water control using a valve
and/or pump.
A wide range of compatible sensors, a remote unit, valves
and actuators complement the control system.
AQ2000
OPTIMISER/COMPENSATOR
CONTROLLER
PRODUCT DATA
• Digital control technology with easy-to understand
analogue installation adjustments
• Outside compensated control of low pressure hot
water heating system
• Multiple system applications
• Automatic system recognition from connected
sensors
• Fixed or self-adaptive heating curve (with optional
space sensor)
• Optimum Start/Stop (with optional space sensor) or
Boost on start-up (without space sensor)
• Room temperature compensation (with optional
space sensor)
• Heating time programme offering switching between
comfort and economy operation up to 6 times per
day, independently for each day of the week
(selectable economy off is also available)
• Manual override switch
• Domestic Hot Water Service (DHWS) time
programme offering up to 6 switching points per
day, independently for each day of the week
• Frost protection of the pipework , hot water cylinder
and the building fabric (with optional space sensor)
• Automatic summer heating mode changeover (user
adjustable)
• Automatic heating shutdown under minimal load
conditions
• Soft start to help prevent pipe expansion noise
• Service switch to assist installer on start-up and
technician during service
• Intelligent pump control with energy efficient pump
overrun
• Built-in user programme
• System temperature and parameter inquiry
• Optional remote unit providing space temperature
sensing, space temperature adjustment,
comfort/economy override switch and 3-hour
comfort extension button with confirmation LED
• Optional space sensor
• Holiday mode with programmable 1 to 99 day
holiday period and dynamic countdown display
• Automatic, DHWS only, Holiday or Standby
operation
• Minimum boiler flow temperature
• Control of one, or two boilers in sequence with
automatic lead boiler rotation
• LED's indicate control output status
EN0R 8441
AQ2000 OPTIMISER/COMPENSATOR CONTROLLER
Supply voltage
: 230 V~, +10% -15%, 50 Hz
Sensor accuracy
Humidity rating
: 0 to 90%
rh (non-condensing)
144 x 153 x 109 mm (with wiring centre)
BASIC SYSTEMS
SPECIFICATIONS
Power
Consumption
Relay ratings : Pumps and boilers:
Ambient
temperature
rating
: 8 W
3 A, 230 V~ @ 0.6 pf - 400,000
operations
Mixing valve:
0.25 A, 230 V~ @ 0.4 pf - 1,000,000
operations
: Water sensors: 20°C to 90°C ±2 K
Outside sensor: -20°C to +20°C ±2 K
Room sensor: 10°C to 25°C ±0.5 K
: 0 to 50°C
System 1
Boiler control for radiator systems
❑ DHWS priority control when DHWS sensor connected.
❑ Optimisation and self-learning heating curve when
optional space sensor or remote unit connected.
❑ One or two boiler control in sequence.
Storage/shipping
temperature
Electromagnetic
compatibility
Protection class : IP40 (with base fitted and when installed
Dimensions
(w x h x d)
Panel cut-out
(w x h)
Weight : 600 g
: -30°C to +70°C
: Emissions to EN55014
Susceptibility to EN50082-1
to EN60529)
: 144 x 96 x 105 mm (with standard base)
: 138 x 92 mm
System 2
Boiler and mixing valve control for radiator or underfloor
heating systems
❑ Versatile DHWS control when sensor connected.
Separate or combined operation available. Combined
can be shifting priority or parallel operation. (see DHWS
Operation on page 3)
❑ Optimisation and self-learning heating curve when
optional space sensor or remote unit connected.
❑ One or two boiler control in sequence.
❑ Continuous temperature boiler loop
EN0R 8441 2
System 3
DHWS OPERATION
Mixed flow control for radiator or underfloor heating systems.
❑ DHWS separate when DHWS sensor connected.
❑ Optimisation and self-learning heating curve when
optional space sensor or remote unit connected.
System 4
Optimiser control for systems with existing controls and
requiring optimisation only.
❑ DHWS separate when DHWS sensor connected.
AQ2000 OPTIMISER/COMPENSATOR CONTROLLER
Key
P1 = Heating pump
P2 = DHWS pump
B1 = Boiler 1
B2 = Boiler 2
T1 = Space sensor/Remote Unit
Separate DHWS
The DHWS operation is completely independent and has no
effect on the demand for heat from the boiler(s). This is
useful when DHWS is being supplied from a separate heat
source. The DHWS output is active when the DHWS
temperature falls 5 K below the DHWS setpoint.
Combined DHWS
There are three variants for combined DHWS; DHWS
priority, shifting priority and parallel operation. In all three
cases a demand for DHWS occurs when the DHWS
temperature falls 5 K below the DHWS setpoint.
1. DHWS Priority
In heating circuits with no mixing valve (and no mixed flow
temperature sensor), the DHWS has priority over the heating.
T2 = Mixed flow water sensor
T3 = Outside sensor
T4 = DHWS sensor
T5 = Boiler water sensor
M = Motor/Actuator
2. DHWS Shifting Priority
In heating circuits with a mixing valve where the boiler
temperature is less than 10 K above the DHWS setpoint the
mixing valve will be closed giving DHWS priority. If there is
extra heat available and the boiler temperature is more than
20 K above the DHWS setpoint, the mixing valve will be
controlled at the calculated setpoint. The mixed water
temperature setpoint is reduced when the boiler temperature
lies between these two values.
3. DHWS Parallel
In heating circuits with a mixing valve the heating circuit will
operate normally during a demand for DHWS.
EN0R 84413
AQ2000 OPTIMISER/COMPENSATOR CONTROLLER
within the range 40 to 70°C.
CONTROLLER FEATURES
If a fixed value of the heating curve ratio
within the range 4 to 40 using this
will act on T5 (boiler temperature) or T2
Output
Indicators
User
Comfort Setpoint
LCD Display
Installer
Adjustments
The desired space Comfort temperature
can be set within the range 12 to 28°C.
Override
System Selection
Cycle Rate Adjustment
The cycle rate adjustment allows the
cycle rate as recommended by the boiler
manufacturer to be set directly on the
controller.
Programming/Operating Buttons
Status
User
Adjustment
Installer
Adjustment
Economy Setpoint
The desired Economy temperature can
be set within the range 8 to 22°C.
Economy OFF can be selected by
turning the knob to the OFF position.
Domestic Hot Water Setpoint
The DHWS temperature can be set
Automatic Summer/Winter Changeover
Temperature Setpoint
This can be set within the range 10 to
30°C. When the average daily outdoor
temperature is above the automatic
Summer/Winter setpoint the heating will
be turned off.
Boiler/Mixed Flow Temperature High Limit
The flow temperature high limit can be
set within the range 20 to 90°C and this
(mixed flow temperature) depending on
the system selected.
Heating Curve Ratio Adjustment
is required then this value can be set
potentiometer.
To determine the heating curve required
refer to the graph displayed below.
Ratio
EN0R 8441 4
Outside Air Temperature oC (T3)
A boiler/mixed flow differential of between 6 and 16 K
A boiler minimum flow temperature setpoint of between 60
Boiler/Mixed Flow Differential
Boiler Minimum Flow Temperature
Boiler temperature Setpoint Adjustment
The Boiler Setpoint operates in a
different manner depending on the
position of System Selector Switch S8.
AQ2000 OPTIMISER/COMPENSATOR CONTROLLER
(Switch S8 in position A)
Boiler
Boiler/Flow
Water
Temperature oC
Temperature
Boiler/Mixed Flow
Differential (adjustable)
Outside Temperature oC
Mixed Flow
Temperature
can be set using the Boiler Setpoint knob.
The boiler calculated setpoint will be the mixed flow
calculated setpoint plus the set differential.
System Selection
System selection is achieved in two manners:
❑ Automatic System Selection
❑ System Selector Switches
System Selection Switches
(Switch S8 in position B)
Boiler Calculated
Setpoint
Mixed Flow
Calculated
Setpoint
Boiler/Mixed Flow
Differential (Fixed 10K)
Boiler/Flow
Water
Temperature oC
Boiler
Flow
Temperature
Outside Air Temperature oC
and 90°C can be set using the Boiler Setpoint knob. When
the controller is in automatic mode the boiler low limit will be
active from the beginning of the first comfort period to the
end of the last comfort period each day.
Automatic System Selection
❑ If a mixed flow water sensor (T2) is connected, the
controller assumes that a mixing valve is present.
❑ If a Remote Unit and/or a Space Sensor (T1) is present
the controller activates the space temperature
compensation, the self-adaptive heating curve and the
optimum Start/Stop.
❑ If a DHWS sensor (T4) is present then combined or
separate temperature control of the DHWS will be
available. If no DHWS sensor (T4) is present only time
control is available on the DHWS output.
Automatic system detection takes place during the first
minute after powering the controller.
Switch Description Position A Position B
S1 Actuator speed 1 minute 4 minute
S2 DHWS type combined separate
S3 DHWS programme programmed continuous
S4 DHWS operation priority operation parallel
S5 Boilers one two
S6 Type of heating radiator underfloor
S7 Adaptive heat curve yes no
S8 Boiler setpoint boiler/mixed flow
boiler minimum flow
diff.
EN0R 84415
AQ2000 OPTIMISER/COMPENSATOR CONTROLLER
Outside
Remote
Mixed
Space
DHWS
Boiler
Boiler
Boiler
Mixing
Heating
DIMENSIONS AND MOUNTING
Important
Panel
Mounting
Standard
Base
AQ2000
Panel
Standard
Base
Mounting
Cover
Standard
Base
Mounting
Surface Mounting
The Aquatrol 2000 controller can be surface mounted in
either a control panel or directly on the wall.
Panel Mounting
The controller can be panel mounted in a control panel door
and features integral panel mounting clips for ease of
installation.
Electrcal Connections for a Typical Aquaplan System
Line
Voltage
Low
Voltage
Tamperproofing
The controller can be made tamperproof, if required, by
inserting a wire link through the hole in the front clear cover
and the front housing at the top centre of the front panel and
twisting or crimping to fix the front panel permanently shut,
thus preventing unauthorised adjustment.
Wall Mounting using Wiring Centre (Optional)
For wall mounting the optional Wiring Centre K42007745005 can be used for protection and termination of electrical
conduits, MICC cable or Pirelli FP200 cable with suitable
adaptors.
1. The installer must be a
trained engineer
2. Disconnect the power
supply before
beginning installation
No. 2
Pump
EN0R 8441 6
valve
No. 1
Flow
Air
Unit
CONTROLLER ORDERING SPECIFICATION
Ordering specification: W6060C1067 with English literature
Specifications
Application
Application
Specifications
Wire dimensions
Specifications
Specifications
OTHER SYSTEM COMPONENTS
W6060C1083 with French literature
W6060C1091 with Italian literature
(to be ordered separately)
Outside Temperature Sensor T7043E
AQ2000 OPTIMISER/COMPENSATOR CONTROLLER
The Outside Temperature Sensor
consists of a thermistor element
housed in a tough plastic case. It is
mounted outside the building providing
a temperature input signal to the
controller.
Ordering Specification:
T7043E1008
Flow Temperature Sensor T7044C
The T7044C Strap-on Flow Water
Temperature Sensor consists of a
thermistor sensing element housed in a
tough plastic case. It is strapped to the
flow water pipe providing a temperature
input signal to the controller.
Ordering Specification:
T7044C1002
Flow Temperature Sensor
T7043F
Application
The T7043F Immersion Flow Water
Temperature Sensor consists of a
thermistor sensing element housed in
an immersion pocket. It should be
mounted on a bend on the flow water
pipe providing a temperature input
signal to the controller
Sensing range : -30 to +40°C
Sensor : NTS type 10 kΩ @
25°C
Enclosure : Plastic with integral
Pg11 fitting
Dimensions : 72 ∅ x 45 mm
Sensing range : 0 to 115°C
Sensor : NTS type 10 kΩ @
25°C
Enclosure : Plastic with integral
Pg11 fitting
Dimensions : 72 ∅ x 48 mm
Sensing range : 0 to 115°C
Sensor : NTS type 10 kΩ @
25°C
Enclosure : Plastic with integral
Pg11 fitting
Housing
dimensions
Well
: 72 ∅ x 45 mm
: ½" BSPT x 100
mm
Insertion Thermostat T7106A
Application
The T7106A Insertion Flow Water
Temperature Sensor consists of a
thermistor sensing element
encapsulated in a metal casing. It can
be inserted in a well to provide a
temperature input signal to the
controller.
Ordering Specification:
T7106A1001
Sensing range : 0 to +105°C
Maximum
ambient
Sensor : NTS type 10 kΩ @
Dimensions : 6 Ø x 60 mm
Wire rating : -30 to +105°
Insertion well : 6 mm Ø x 60 mm
: 105°C
25°C
: 4 mm dia. x 1.5 m
EN0R 84417
AQ2000 OPTIMISER/COMPENSATOR CONTROLLER
Specifications
RELATED LITERATURE
Ordering Specification:
T8102B1001 with English literature
Remote Unit T8102B
Application
The Remote Unit provides a space
temperature sensor input signal to the
AQ2000 for space temperature
compensation and to enable the
optimisation and adaptive ratio to
function. Remote adjustment of the
setpoint is also possible and an
override switch gives the possibility of
selecting permanent comfort or
economy settings. A "party" button
allows a three hour comfort extension
to be selected.
T8102B1050 with French literature
T8102B1068 with Italian literature
Sensor : NTC type 10 kO @
Housing : White plastic
Weight : 70 g
Dimensions : 70 x 75 x 31 mm
Setpoint
adjustment
Space Sensor T8102B
Application
The Space Sensor provides a space
temperature sensor input signal to
AQ2000 for space temperature
compensation and to enable the
optimisation and adaptive ratio to
function. The Space Sensor can be
used in conjunction with the Remote
Unit for added flexibility.
Specifications
Sensor : NTS type 10 kΩ @
Housing : White Plastic
Weight : 70g
Dimensions : 70 x 75 x 31 mm
25°C
(w x h x d)
: ± 3 K
25°C
(w x h x d)
Ordering Specification:
Wiring Centre K42007745-005
Application
The Wiring Centre is an essential
component when mounting the
controller on a wall. It provides a
number of conduit entries through the
bottom, back and sides. In addition, it
provides extra terminals to link multiple
incoming cables such as line, neutral
and earth.
Ordering Specification:
K42007745-005
Application Manual UK1C 0002 in English
Installation and user Guide 42008356-001 in English
42008356-002 in French
42008356-003 in Italian (check availability)
Specifications
Housing : White plastic
Cable entries : 17 x 19 mm
Dimensions : 144 x 154 x 72
conduit entries
(9 bottom, 3 right
side, 1 left side, 4
back)
mm (w x h x d)
Honeywell Control Systems Limited Helping You Control Your World
Newhouse Industrial Estate
Motherwell ML1 5SB
United Kingdom
EN0R 8441
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