Honeywell ASC02-01WM Installation And Operating Instructions Manual
EN2B-0365GE51 R0710
Temperature differential controller ASC02-01WM
2 inputs, 1 output
INSTALLATION AND OPERATING INSTRUCTIONS
2 EN2B-0365GE51 R0710
ASC02-01WM Table of Contents
EN2B-0365GE51 R0710 3
Table of Contents
1 About this manual..........................................................................................................7
1.1 Applicability .........................................................................................................7
1.2 Users...................................................................................................................7
1.3 Description of symbols ........................................................................................8
1.3.1 The structure of the warning notices.......................................................8
1.3.2 Danger levels in warning notices ............................................................8
1.3.3 Notes ......................................................................................................8
2 Safety ..............................................................................................................................8
2.1 Proper usage.......................................................................................................8
2.2 Improper usage ...................................................................................................9
2.3 Dangers during assembly / commissioning .........................................................9
2.4 Detecting faults .................................................................................................10
2.5 Exclusion of liability ...........................................................................................10
3 Description ...................................................................................................................11
3.1 Controller in the solar circuit..............................................................................11
3.1.1 The purpose of the controller................................................................11
3.1.2 The structure of the solar circuit ...........................................................11
3.1.3 The function of the solar circuit.............................................................11
3.2 Case overview...................................................................................................12
4 Installation....................................................................................................................13
4.1 Opening / closing the case ................................................................................13
4.1.1 Opening the case .................................................................................13
4.1.2 Closing the case ...................................................................................14
4.2 Mounting ...........................................................................................................14
4.2.1 Mounting the controller .........................................................................14
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4 EN2B-0365GE51 R0710
4.3 Electrical connection .........................................................................................15
4.3.1 Preparing the cable feed.......................................................................16
4.3.1.1 Feeding the cable through the rear of the case.......................16
4.3.1.2 Feeding the cable through the lower side of the case.............17
4.3.2 Connecting the cables ..........................................................................18
4.3.3 Terminal plan........................................................................................19
4.3.4 Operation of the connecting terminals ..................................................19
5 Display overview..........................................................................................................20
6 Commissioning ............................................................................................................21
6.1 Testing the pump ..............................................................................................21
7 Description of the controller functions......................................................................22
7.1 Switch-on / switch-off temperature difference ...................................................22
7.2 Maximum storage tank temperature..................................................................22
7.3 Maximum collector temperature ........................................................................23
7.4 Tube collector function (F1)...............................................................................23
7.5 Anti-freeze function (F2)....................................................................................23
8 Operation......................................................................................................................24
8.1
Reading the temperature values .......................................................................24
8.2 Setting the controller (settings menu)................................................................25
8.2.1 Using the settings menu .......................................................................25
8.2.2 Overview of menu settings ...................................................................25
8.2.3 Setting the storage tank maximum temperature (P1) ...........................26
8.2.4 Setting the switch-on temperature difference (P2)................................26
8.2.5 Setting the switch-off temperature difference (P3)................................26
8.2.6 Activating the tube collector function (F1).............................................27
8.2.7 Activating the anti-freeze function (F2) .................................................27
8.2.8 Selecting the temperature format (F3)..................................................28
8.2.9 Reset ....................................................................................................28
ASC02-01WM Table of Contents
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9 Maintenance .................................................................................................................29
9.1 Fault causes......................................................................................................29
9.1.1 Controller does not appear to function at all .........................................29
9.1.2 Short-circuit symbol and warning display appear .................................29
9.1.3 Interruption symbol and warning signal appear ....................................30
9.1.4 The pump, which is connected to the controller, is not running,
although its switch-on conditions have been fulfilled ............................30
9.1.5 "SYS" and the warning symbol fl ash in the controller display ..............31
9.2 Testing the temperature sensors.......................................................................31
9.2.1 Safety ...................................................................................................31
9.2.2 Testing the resistance values ...............................................................31
9.2.2.1 Measuring resistance values...................................................32
10 Dismantling and disposal ...........................................................................................32
11 Technical data..............................................................................................................33
ASC02-01WM About this manual
EN2B-0365GE51 R0710 7
1 About this manual
These operating instructions are part of the product.
► Read these operating instructions carefully before use,
► Keep them over the entire lifetime of the product,
► and pass them on to any future owner or user of this product.
1.1 Applicability
This manual describes the installation, commissioning, operation,
maintenance and dismantling of the temperature differential
controller for solar thermal energy systems. When installing the
remaining components, e.g. solar collectors, pump assemblies,
storage tank, pumps and switching valves, be sure to observe the
appropriate installation instructions provided by each
manufacturer.
1.2 Users
Installation, commissioning, maintenance and dismantling of the
controller may only be performed by trained professional
personnel. Before commissioning, the controller must be
professionally assembled and installed by professional personnel
in accordance with the applicable regional and transregional
regulations as well as the safety instructions and general
instructions within this installation and instruction manual. The
professional personnel must be familiar with this operation
manual.
The controller is maintenance-free.
Use the controller only after first thoroughly reading and
understanding this instruction manual and the safety instructions.
Adhere to all safety instructions. In the event of any ambiguities
regarding the operation and alteration of parameters or functions,
consult professional personnel.
Safety ASC02-01WM
8 EN2B-0365GE51 R0710
1.3 Description of symbols
1.3.1 The structure of the warning notices
SIGNALWORD
Type, source and consequences of the danger!
► Measures for avoiding danger.
1.3.2 Danger levels in warning notices
Danger level Likelihood of
occurrence
Consequences
resulting from
non-compliance
DANGER
Imminent threat of
danger
Death, serious
bodily injury
WARNING
Possible threat of
danger
Death, serious
bodily injury
CAUTION
Possible threat of
danger
Minor bodily injury
CAUTION
Possible threat of
danger
Property damage
1.3.3 Notes
Note on easier and safer working habits.
► Measures on easier and safer working habits.
.
2 Safety
2.1 Proper usage
The temperature differential controller (below called controller)
may only be used for controlling solar thermal systems within the
permissible ambient conditions (see chapter 12).
NOTE
ASC02-01WM Safety
EN2B-0365GE51 R0710 9
2.2 Improper usage
The controller must not be operated in the following environments:
• outdoors
• in damp rooms
• in rooms where highly flammable gas mixtures can occur
• in rooms in which the operation of electrical and electronic
components may cause dangers to arise
2.3 Dangers during assembly / commissioning
The following dangers exist during assembly / commissioning of
the controller and during operation (in case of assembly errors):
• Risk of death by electrocution
• Risk of fire due to short-circuit
• Damage to any of the constructional fire safety measures
present in the building due to incorrectly installed cables
• Damage to the controller and connected devices due to
improper ambient conditions, inappropriate power supply and
connecting prohibited devices or faulty devices and incorrect
assembly or installation
Therefore, all safety regulations apply when working on the mains
supply. Only electricians may perform work that requires opening
the controller (such as connection work).
► When laying cables, ensure that no damage occurs to any of
the constructional fire safety measures present in the building.
► Make sure that the permissible ambient conditions at the
installation site are not exceeded (see chapter 12).
► Make sure to comply with the specified degree of protection.
► Factory labels and markings may not be altered, removed or
rendered unreadable.
► Before connecting the device, make sure that the power
supply matches the specifications on the type plate.
Safety ASC02-01WM
10 EN2B-0365GE51 R0710
► Make sure that all devices which are connected to the
controller conform to the technical specifications of the
controller.
► Secure the device against unintentional commissioning.
► All work on an open controller must be performed with the
mains supply disconnected.
► Protect the controller against overloading and short-circuiting.
2.4 Detecting faults
► Check the display regularly.
► In case of faults, isolate the cause (see chapter 9).
► As soon as it becomes evident that safe operation is no longer
possible (e.g. visible damage), remove the device from the
mains supply immediately.
► Have professional personnel remedy the fault.
2.5 Exclusion of liability
The manufacturer cannot monitor the compliance to this manual
as well as the conditions and methods during the installation,
operation, usage and maintenance of the controller. Improper
installation of the system may result in damage to property and,
as a result, in bodily injury.
Therefore, we assume no responsibility and liability for loss,
damage or costs which result from or are in any way related to
incorrect installation, improper operation, incorrect execution of
installation work and incorrect usage and maintenance.
Similarly, we assume no responsibility for patent right or other
right infringements of third parties caused by usage of this
controller.
The manufacturer reserves the right to make changes to the
product, technical data or assembly and operating instructions
without prior notice.
ASC02-01WM Description
EN2B-0365GE51 R0710 11
3 Description
3.1 Controller in the solar circuit
3.1.1 The purpose of the controller
The controller controls the pump in a solar thermal system.
3.1.2 The structure of the solar circuit
Storage tank
Pump
Collector
T1
T2
Temperature sensor 1
(collector sensor)
Temperature dierential controller
Solar circuit
Temperature sensor 2
(lower area of storage tank)
3.1.3 The function of the solar circuit
The controller constantly compares the temperatures between the
collector (T1) and the lower area of the storage tank (T2) via
temperature sensors. Once the sun heats the collector and there
is a temperature difference of 8 K (adjustable parameter) between
the collector and the storage tank, the pump is switched on.
The pump extracts the heat transfer fluid from the lower cooler
area of the storage tank and pumps it to the collector. The heat
transfer fluid in the collector is heated by the sun and flows back
to the storage tank.
The heat transfer fluid heats the domestic water via a heat
exchanger located in the storage tank.
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