Regulus CSE SOL G SRS1 T-E User manual

www.regulus.eu
CSE SOL G SRS1 T-E
CSE SOL G SRS1 T-E
EN
Installation and Operation Manual
CSE SOL G SRS1 T-E SOLAR PUMP STATION

1. Introduction
CSE SOL G SRS1 T-E Solar Pump Station is tted with a solar pump of the latest generation that
permits ow control either internally by selecting a suitable mode or externally through PWM signal.
The complicated setting of the right ow rate is not needed when the PWM signal is used, the pump
station keeps adjusting it automatically, depending on the actual solar radiation. This means that the
solar thermal system always works with the maximum possible e󰀩ciency.
Thanks to a direct connection of the heating element into the special socket in the pump station,
a long power cable for the pump station and a cable ready to connect to a solar sensor, the installa-
tion is easy and fast, no qualied electrician is needed.
2. Pump Station Description
Main Features
Použití
This solar pump station contains all components necessary for current and
e󰀩cient operation incl. complete electrical wiring. It is necessary to connect
only the collector temperature sensor.
An electric heating element of up to 3 kW output can be connected to the
pump station. The pump station is equipped with a special socket for this
purpose.
No heating element is included in supply.
Popis
The pump station consist of a UPM3 Hybrid 25-70 pump, SRS1 T controller,
check and safety valves, 2 ball valves, pressure gauge, thermometer, el. wiring,
insulation and installation kit.
The pump station further involves:
● connection point for an expansion vessel
● safety valve outlet, incl. extension piping terminating under the pump station
for easier connection
● ball valves for lling, draining and topping up a solar thermal system
● special socket to connect a heating element of max. output of 3 KW / 230V
● two connected temperature sensors for solar consumer (4m cable)
● solar temperature sensor (2m cable, silicone insulation)
● 230V power cable w. el. plug (3m cable, PVC insulation)
Installation on a tank or wall
Working uid water-glycol mixture (max. 1:1)
Codes corresponding to connection sizes
Connection G 3/4“ M G 1“ M
Flow measurement range 2-12 l/min 8-28 l/min
Code 18970 18962

3. Pump Station Data
Data for CSE SOL G SRS1 T-E Pump Station
Max. uid working temperature 110 °C
Max. working pressure 6 bar
Min. system pressure 1.3 bar with the pump stopped
El. heating element resistive load max. 3000 W / 230 V (see accessories)
External circulation pump induction load max. 3000 VA / 230 V
Power supply 230 V, 50 Hz
IP rating IP20
Ambient temperature 5 - 40 °C
Max. relative humidity 85 % at 25 °C
Overall dimensions 470 x 265 x 120 mm
Total weight 7.1 kg
Min. values of working pressure**
Values of min. working pressure
at the pump suction port
depending on temperature
0,8 bar at 50 °C
1,2 bar at 90 °C
1,8 bar at 110 °C
** this condition is met for current installations when the initial system pressure is set following the formula (see the Instructions for
solar collectors): p = 1,3 + 0,1·h [bar] where h… is the height from pressure gauge to the middle of collector array [m]
Pump station internal wiring
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
SRS1 T
CONTROLLER
Llive
Nneutral
RI, R potential-free switching contact
Vi iPWM feedback signal
-GND PWM
VPWM control signal output
S3 sensor 3 (after-heating, recirculation)
S2 sensor 2 (solar consumer)
S1 sensor 1 (collector)
SPECIAL SOCKET (FEMALE) IN
THE PUMP STATION DESIGNED TO
CONNECT A HEATING ELEMENT
OF MAX. 3 kW OUTPUT.

3.1 Pump Station Pressure Drop Graph
1 - FLOWRATE INDICATOR W. BALL VALVE
2 - CIRCULATION PUMP
3 - CHECK VALVE
4 - HOSE TAIL FOR FILLING AND DRAINING
THE SYSTEM
5 - BALL VALVE W. SIDE OUTLET FOR
SAFETY GROUP
6 - THERMOMETER (IN THE UPPER PART
OF INSULATION)
7 - PRESSURE GAUGE
8 - EXPANSION VESSEL CONNECTION
POINT, 3/4" M
9 - 6 BAR SAFETY VALVE
10 - FILLING BALL VALVE
11 - SPANNER FOR CONTROL OF BALL
VALVE W. SIDE OUTLET
12 - DRAIN BALL VALVE
13 - SRS1 T ELECTRONIC CONTROLLER
14 - TERMINAL BOX WITH EL. SOCKET TO
CONNECT A HEATING ELEMENT
15 - SAFETY VALVE WASTE PIPE, Ø22 mm
4. Pump Station Components
1
2
3
4
5
6
7
89
10
11
12
15
13
14
Flowmeter Flowmeter

4.1 Check Valve
The non-return valve prevents the tank from cooling down due to gravity circulation when the sun is
not shining. It is located between the ball valves and can therefore be removed and cleaned without
having to drain the solar uid from the entire circuit.
Správná poloha při provozu.
If the mark is on the left, the check valve is set to the position for normal
operation. If you need to open the valve (e.g. to drain uid from the
system), turn the check valve control with the red dot to the right.
This will deactivate the check valve function.
For correct operation of the pump station during normal use it is important
to have the check valve control always in the right position, i.e. the mark
on the left (see pic.).
!
4.2 Ball Valves
Ball valves are used to separate the pump station from the solar circuit. During servicing (including
cleaning of the check valve) there is no need to drain the uid from the solar system. For greater rigi-
dity of the hydraulic part of the pump station, the upper ball valve is attached to the xing back plate.
The upper ball valve is operated by a lever which is not located on the valve during operation.
A wrench or pliers must be used to operate the lower ball valve, which is part of the ow indicator.
Turning the lever or the key or pliers a quarter turn to the right closes the ball valve. It opens when
the lever is turned to the left. Before closing / opening the ball valve, it is necessary to remove the
front part of the insulation. As a result, closing the system is reserved for installation or service
technicians only. Thus, the user cannot simply close the solar circuit and cause stagnation and sub-
sequent degradation of the solar uid.
The ball valves are equipped with apacking with two O-rings with dimensions of 8.7 x 1.8 mm that can
be easily replaced by removing the control element with stop ends and loosening the packing nut with
a # 21 wrench.
The safety valve, expansion vessel and upper lling ball valve always remain connected to the
solar thermal system, even if the ball valves are closed! For this reason, never try to separate them
from the lled solar system, as there is a risk of serious injury and damage to the solar system!
Never close the drain line of the safety valve, it must always be free for any liquid leaking from the
safety valve!
5. Accessories
Accessories (not included in supply) Code
ETT-N heating element w. connector, 2 kW 16942
ETT-N heating element w. connector, 3 kW 16943
Connector for CSE SOL SRS1 T-E 16940
Straight compression tting, Cu 22 x Cu 22 7629
Straight Compression Fitting Adaptor, Cu 22 x
G 3/4“ M 13695
These accessories are not included in supply. An ETT-N heating element with connector (16942 or 16943)
is needed when the pump station is to be used following the hydraulic variant 1 (chapter 7.1). The pipe
ttings (7629 and 13695) are intended for connecting a waste pipe to the safety valve.
Right position during operation.

6. Installation Options
The solar pump station is designed to be mounted on a wall or on a tank. There are two xing ope-
nings in the rear part of the insulation. The lower one is accessible only when the electronic contro-
ller is removed from rear part of the insulation (see the pic. below).
The supply involves an installation kit that is used to x the pump station in its place.
7. Pump Station Connection Diagram
OPENINGS IN THE BACK
PLATE FOR FIXING THE
PUMP STATION
SRS1 T
CONTROLLER
KEY
1 hot water storage tank
2 ETT-N electric heating element
3 solar collectors
4 solar pump station
5 pump station for DHW recirculation – CSE
TVMIX ZV
6 safety kit for HW storage tank
7 solar expansion vessel
8 DHW expansion vessel
SV cold water
TV hot water
CV hot water recirculation
KK ball valve
ZV check valve
AOV automatic air vent valve
PTR pressure temperature relief valve
REDV pressure reducing valve (optional)
VK drain valve
SVE expansion vessel service valve
ZÁS power socket, 230 VAC, 50 Hz
S1 collector temperature sensor Pt1000
S2 HW storage tank temperature sensor Pt1000
R1 R1 relay of SRS1 T controller (potential-free)

7.1 Overview of Hydraulic Variants
1 3
5

Performance curves
Line type Description
Constant speed
Proportional pressure
Constant pressure
8. UPM3 HYBRID 25-70 Pump
Pump control
The circulation pump can be controlled:
• internally without PWM signal by selecting a proper mode and pump curve.
• externally by PWM C control signal (prole for solar systems)
WARNING – IMPORTANT
The pump permits to be controlled also by PWM A signal (prole for use in heating systems).
This mode must not be used for solar thermal systems.
Using the PWM A pump prole would cause system damage.

Description of Pump Frofiles
a) INTERNAL CONTROL - Proportional pressure
• Head (pressure): reduced with growing system
pressure drop and increased with sinking
system pressure drop.
• Pump operating point: moves up or down on the selected proportional pressure curve
depending on the current system pressure drop.
CONTROL MODE DESCRIPTION
Proportional pressure
IThe lowest curve of proportional pressure
II The middle curve of proportional pressure
III The highest curve of proportional pressure
AUTOADAPT
Automatically controls performance in the range from the
highest to the lowest proportional pressure curve
b) INTERNAL CONTROL - Constant pressure
• Head (pressure): kept constant, disregarded of
the system pressure drop.
• Pump operating point: moves on the selected constant pressure curve depending on the
current system pressure drop.
CONTROL MODE DESCRIPTION
Constant pressure
IThe lowest curve of constant pressure
II The middle curve of constant pressure
III The highest curve of constant pressure
AUTOADAPT
Automatically controls performance in the range from the
highest to the lowest constant pressure curve
c) INTERNAL CONTROL - Constant speed
• The pump runs at constant speed.
• Pump operating point: moves up or down on the selected curve depending on the current
system pressure drop.
CONTROL MODE Max. H (upper graph) Max. P1(lower graph)
Constant speed
I5 m 33 W
II 6 m 39 W
III 7 m 52 W
d) EXTERNAL CONTROL - PWM C (solar)
• The pump runs up to the max. head following the constant speed curve
set depending on the current PWM value.
• The speed will increase when the PWM value increases. If PWM equals 0, the pump will
stop.
e) EXTERNAL CONTROL - PWM A (heating)
WARNING – IT IS PROHIBITED TO USE PWM A PUMP PROFILES
Using the PWM A (I, II, III) pump proles in a solar pump station would cause system damage.

Settings Display
DISPLAY - MARKING OF LEDs
For clarity, the marking of the LEDs
is further omitted.
DISPLAY CONTROL MODE
green LED FLASHING INTERNAL
1Proportional pressure AUTOADAPT
2Constant pressure AUTOADAPT
3
Proportional pressure
I
4II
5III
6
Constant pressure
I
7II
8III
9
Constant speed
I
10 II
11 III
DISPLAY CONTROL MODE
green LED NOT FLASHING EXTERNAL
12 PWM C
13
PWM A
I
WARNING
- DO NOT
USE THESE
MODES
14 II
15 III

FLASHING FREQUENCY
OF GREEN LEDS CONTROL RECEIVING PWM SIGNAL
Not flashing Internal -
1 flash per second External NO
12 flashes per second External YES
WARNING: LEDs may be turned by 90° or 180°, or mirrored, depending on the specific pump type.
When switched on, the pump runs at factory settings or the last setting. The display shows the
current pump performance.
Setting selection
To select your desired setting, press the button repeatedly until you find the setting you need (see
the table above). If you pass the desired setting, you have to go one more round until it appears
again. The order of modes corresponds to the table.
Error Display
DISPLAY CONTROL MODE
Seized pump
Too low power supply voltage
Electric fault
Pump Wiring
N (blue)
L (brown)
PE (yellow-green)
PWM GND (blue)
iPWM out (black)
PWM in (brown)
socket for power supply (A)
and signal transmission (B)
connector for power supply (A)
and signal transmission (B)

9. Filling a Solar Thermal System
For lling a solar thermal system, the ball valve above the pump must be closed and the ball valve
below the pump open. The ball valve above the pump is operated by means of the enclosed spa-
nner. Connect the lling pump to the ll and drain ball valves using hoses – see Chap. 4, and open
these valves. After lling the solar thermal system, close the ll and drain ball valves, disconnect
the hoses and re-open the ball valve above the pump.
Prior to commissioning the system, both the ball valves must be open!
©2022 We reserve the right to errors, changes and improvements without prior notice.
REGULUS spol. s r.o.
E-mail: [email protected]
Web: www.regulus.eu
v1.0-03/2022
CLOSED
OPEN