Regulus TRS 4 Operating instructions

TRS 4 Controller
EN
v 1.0
Installation, wiring and operating instructions

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EC Declaration of Conformity
By affixing the CE mark to the unit the manufacturer declares that the TRS4 conforms to the following relevant
safety regulations:
- Directive 2006/95/EC - EC low voltage directive (LVD)
- Directive 2004/108/EC - EC electromagnetic compatibility directive (EMC)
General instructions - it is essential to read this!
These installation and operating instructions contain basic instructions and important information regarding
safety, installation, commissioning, maintenance and the optimal use of the unit.
Therefore these instructions must be read completely and understood by the installation technician/specialist
and by the system user.
Installation shall be done according to valid standards and rules. The controller does not under any circumstances
replace any safety devices to be provided by the customer (e.g. a safety valve, air vent valve etc.)!
The installation shall be done by a qualified specialist who is trained accordingly.
For the user:
Make sure that the specialist gives you detailed information on the function and operation of the controller.
Always keep these instructions in the vicinity of the controller.
Changes to the unit
Changes to the unit can compromise the safety and function of the unit or the entire solar system!
• Changes, additions to or conversion of the unit are not permitted without written permission from the
manufacturer.
• It is forbidden to install additional components that have not been tested together with the unit.
• The controller must not be used after an accident when its functions could have been altered - e.g. after
a fire. It must be turned off immediately.
• Use only original spare parts.
• Marking of the manufacturer and distributor must not be altered or removed.
• Only the settings actually described in these instructions may be made on the controller.
Danger

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CONTENTS
A - Description and Installation
A 1 - Specification ................................................................................................................................ 4
A 2 - Description .................................................................................................................................. 5
A 3 - Scope of supply ........................................................................................................................... 5
A 4 - Explanation of symbols ............................................................................................................... 5
B - Hydraulic variants
C - Installation and Wiring
C 1 - Wall installation ........................................................................................................................... 7
C 2 - Electric wiring .............................................................................................................................. 8
C 3 - Installing the temperature sensors .............................................................................................. 8
D - Electric Wiring of Hydraulic Variants
E - Controller Use
E 1 - Display and input ......................................................................................................................... 10
E 2 - Menu sequence and menu structure ........................................................................................... 11
E 3 - Commissioning help - setup wizard ............................................................................................ 12
E 4 - Free commissioning .................................................................................................................... 12
F - Menu Description
F 1 - Measurements ............................................................................................................................ 13
F 2 - Statistics ...................................................................................................................................... 14
F 3 - Times ........................................................................................................................................... 15
F 4 - Operating modes ......................................................................................................................... 16
F 5 - Settings HC ................................................................................................................................. 18
F 6 - Settings HC 2 .............................................................................................................................. 20
F 7 - Protective functions ..................................................................................................................... 21
F 8 - Special functions ......................................................................................................................... 22
F 9 - Menu lock .................................................................................................................................... 24
F 10 - Service values ............................................................................................................................. 25
F 11 - Language ..................................................................................................................................... 26
G - Defects and Maintenance
G 1 - Error and info messages ............................................................................................................. 26
G 2 - Replacing the fuse ...................................................................................................................... 27
G 3 - Maintenance ............................................................................................................................... 27
G 4 - Useful hints and tricks ................................................................................................................. 28
G 5 - Disposal ...................................................................................................................................... 28

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A - DESCRIPTION AND INSTALLATION
A 1 - Specification
Electric specification:
Mains voltage 230 V ~ ±10 %
Mains frequency 50-60Hz
Power consumption 2 VA
Total switched power 460 VA (relay outputs 1-5)
Switched power per relay 460 VA for AC1 / 185W for AC3
Internal fuse 2 A slow-blow, 250 V
El. protection IP40
Protection class II
Sensor inputs 5× Pt1000
1× remote controller
Measuring range -40 to 110 °C
Permissible ambient conditions:
Ambient temperature
- for controller operation 0-40 °C
- for transport/storage 0-60 °C
Air humidity
- for controller operation max. 85 % rel. humidity at 25 °C
- for transport/storage no moisture condensation permitted
Other specifications and dimensions:
Housing design 2-part, ABS plastic
Installation method wall installation
Overall dimensions 163 × 110 × 52 mm
Aperture installation dimensions 157 × 106 × 31 mm
Display fully graphical display, 128 × 64 dots
Operation 4 entry keys
Optional temperature sensors:
Immersion sensor Pt1000, with lead TT/P4 up to 95 °C
Pipe-mounted sensor Pt1000, pipe-mounted TR/P4 up to 95 °C
Outdoor temperature sensor Pt1000, type TA52
Remote controller Pt1000, type RC21
Sensor leads 2× 0,75 mm2 extendable up to 30 m
Temperature resistance table for Pt1000 sensors:
°C 0 10 20 30 40 50 60 70 80 90 100
Ω1000 1039 1077 1116 1155 1194 1232 1270 1308 1347 1385

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A 2 - About the controller
The weather controlled Heating Controller TRS 4 facilitates efficient use and function control of your heating
system. This type is designed to control two heating circuits, one mixed and one direct. It is equipped with
5 connection outputs for e.g. two pumps and one mixing valve. The TRS4 has 6 connection inputs for heat
sensors and a remote controller. For each step in the input process the individual entry keys are assigned to
appropriate functions and explained. The controller menu contains headwords for the measured values and
settings, as well as help texts or clearly-structured graphics.
Important properties of TRS 4:
- both graphics and texts on a backlit display
- simple viewing of the current measurement values
- analysis and monitoring of the system also by means of statistical graphics
- extensive menus with interactive explanations
- menu lock can be activated to prevent unintentional setting changes
- usual preset parameters in factory setting
A 3 - Scope of supply
- TRS4 heating controller
- 3 screws 3.5 × 35 mm and 3 plugs 6mm for wall installation
- 6 strain relief clips with 12 screws
- Replacement fuse 2A slow-blow, 250 V
- Installation, wiring and operating instructions
- 1× pocket-mounted temperature probe Pt1000, with lead TT/P4 up to 95 °C
- 1× pipe-mounted sensor Pt1000, pipe-mounted TR/P4 up to 95 °C
- 1× outdoor sensor Pt1000, type TA52
A 4 - Explanation of symbols
Failure to observe these instructions can result in danger to life from electric voltage.
Failure to observe these instructions can result in serious damage to health such as scalding, or
even life-threatening injuries.
Failure to observe these instructions can result in destruction of the unit or the system, or damage
to the environment.
Information which is especially importation for the function and optimal use of the unit and the
system.
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Caution
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1. Mixed heating circuit, no boiler,
no accumulation tank
3. Mixed heating circuit with boiler
and accumulation tank
5. Two heating circuits - mixed and direct one,
with boiler, no accumulation tank
2. Mixed heating circuit with boiler,
no accumulation tank
4. Two heating circuits - mixed and direct one,
no boiler, no accumulation tank
6. Two heating circuits - mixed and direct one,
with boiler and accumulation tank
B - HYDRAULIC VARIANTS
The following illustrations should be viewed only as schematic diagrams showing the respective hydraulic
systems, and do not claim to be complete. The controller does not replace safety device under any
circumstances. Depending on the specific application, additional system components and safety components
may be mandatory, such as check valves, non-return valves, safety temperature limiters, scalding protectors,
etc., and must therefore be provided.

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C - INSTALLATION
C 1 - Wall installation
Install the controller in dry areas only and under the ambient conditions described in A 1.
Installation instructions:
1. Unscrew cover screw completely.
2. Carefully pull upper part of housing from lower part.
3. Set upper part of housing aside, being sure not to
touch the electronics when doing so.
4. Hold the lower part of the housing up to the
selected position and mark the 3 mounting holes.
Make sure that the wall surface is as even as possible
so that the housing does not become distorted when it
is screwed on.
5. Using a drill and size 6 bit, drill 3 holes at the points
marked on the wall and push in the plugs.
6. Insert the upper screw and screw it in slightly.
7. Fit the upper part of the housing and insert the other
two screws.
8. Align the housing and tighten the three screws.
Obr. C 1.1
Fig. C 1.1
Fig. C 1.2
fixing
points
fixing
points
fixing
points

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C 2 - Electric wiring
Low-voltage cables such as temperature sensor cables must be routed separately from mains
voltage cables. Feed temperature sensor cables only into the left-hand side of the unit, and mains
voltage cables only into the right-hand side.
The controller is not equipped with a mains switch. For this purpose please use e.g. a circuit
breaker. The cables being connected to the unit must not be stripped by more than 55 mm, and the
cable jacket must reach into the housing just to the other side of the strain relief.
Wiring instructions:
1. Make sure the circuit breaker is in off position and
power supply is off.
2. Open the controller.
3. Strip the cable by 55 mm max., insert and fit the
cable strain relief. Strip the last 8-9 mm of all the wires
(C.2.1).
4. Press the terminals e.g. with a screwdriver (Fig.
C.2.1) and wire the cables following the diagrams in
section D.
5. Lock the housing lid onto the top margin of its
bottom counterpart, push the cables inside and close
the housing gently.
6. Switch on mains voltage and place controller in
operation.
Fig. C 2.1
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C 3 - Installing the temperature sensors
The controller operates with Pt1000 temperature sensors.
Max. sensor lead length is 30 m and its cross section at least 0.75 mm2.
Make sure that there is no contact resistance! Use immersion or pipe-mounted sensors.
The temperature sensor cables must be routed separately from mains voltage cables!
As default, S6 is jump-wired with S terminal in order to keep functions of the heating circuit in
operation. If the jumper gets removed, the heating circuit stops heating. Should a RC21 remote
controller be used, the jumper at S6 shall be removed. If an external thermostat is connected, its
electrical contacts shall be of floating type and low resistance = circa 0 Ohm.
Caution
Caution

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D - ELECTRIC WIRING
Sensor side - max 12V Mains side - 230V 50Hz
Note: If the RC21 remote controller or another room thermostat is connected, the bridge at S6 has to be
removed.
Note: If the hydraulic variant 4, 5 or 6 (page 5) is used, then the sensor of heating circuit 2 shall be connected
to terminal S3.
If an accumulation tank is used, the sensor can be connected to terminal S4 (see menu 7.4).
- Temperature sensors S1 – S6
(polarity freely selectable)
- Optional additional functions Z1/Z2
Terminal: connection for:
- Jumper terminal block S-
S1 sensor 1 outdoor sensor
S2 sensor 2 heating circuit
S3 sensor 3 heating circuit 2
S4 sensor 4 accumulation tank
S5 sensor 5 indoor sensor
S6 sensor 6 remote controller*
+ free
Z1 Optional / expansion
Z2 Optional / expansion
Use terminal block S- for connecting the
sensor earths of S1-S6.
The polarity is freely selectable.
The sensors S3-S6 are optional, depending
on the hydraulic variant chosen.
- Protective conductor PE, metal terminal block
- Neutral conductor terminal block N
- Mains phase conductor L
- Switch output R1-R4
- Floating contact at R5/R5I
Caution: Only suitable for 230V!
Terminal: connection for:
N Jumper terminal block N
L Mains phase conductor L
R1 Heating circuit pump
R2 Mixing valve opens
R3 Mixing valve closes
R4 HC2 pump
R5 add. heating
R5I add. heating
PE The PE protective conductor
must be connected to the PE
metal terminal block!
jumper terminal block S jumper terminal block N

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E - CONTROLLER USE
E 1 - Display and input
The display (1) shows graphic and text info on the hydraulic variant, set and measured values and other text
info.
The LED lamp (2):
lights up green - if a relay is closed and the
controller works right
lights up red - if the controller is set to
automatic operation and all
relays are open
flashes slowly red - if manual operation mode
is set
flashes quickly red - if an error occurred
Entries are made using four keys - „esc” key (3)
and three keys (4), to which different functions are
assigned depending on the situation.
The „esc” key (3) is used to cancel an entry or to exit
a menu.
If applicable there will be a request for confirmation
as to whether the changes which have been made
should be saved.
The function of each of the other three keys (4) is
shown in the display line directly above the keys;
the right-hand key generally has a confirmation and
selection function.
Examples of key functions:
+/- increase/decrease values
▼/▲ scroll menu up/down
YES/NO confirm/reject
Info additional information
Back to previous screen
OK confirm setting
Examples of display symbols:
pump (rotates when active)
valve (direction of flow is black)
heating - day mode
heating - night mode
heating - comfort mode
day mode
night mode
day mode by RC21
night mode by RC21
Reference value mode
Reference value 14 day
Warning / Error message
Warning / Error message
Additional heating