Regulus CSE MIX W8-SC 1M User manual

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CSE MIX W8-SC 1M
CSE MIX W8-SC 1M
EN
Installation and Operation Manual
CSE MIX W8-SC 1M PUMP STATION
with mixing valve

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1. Introduction
CSE MIX W8-SC 1M pump station is designed to be installed in heating circuits where it provides
heating water mixing and circulation through the circuit. Its typical application is in mixed heating circuits
in buildings where it provides circulation and mixing of heating water to a desired temperature, or for
solid-fuel boiler circuits where it provides circulation and mixing to a min. heating water temperature as
a protection against low-temperature corrosion. Actuator of the mixing valve is controlled by an external
controller through 3-point control with 230V outputs. The circulation pump is switched by an external
controller with a 230 VAC output. The controller is not included in supply.
The pump station is designed to be installed directly on the pipe, with 100 mm min. distance of the pipe
axis from a wall.
2. Description of the pump station
The pump station consists of a PARA SC pump including a power cable, a 3-way mixing valve with
actuator incl. a power cable, a ball valve and insulation.
Main features
Application control of a solid fuel boiler return line temperature or control of
flow temperature into a mixed circuit by an external controller
Description consists of a WILO PARA 28/8 SC pump, a 3-way mixing valve
LK 840 with AVC actuator and insulation
Working fluid water, water-glycol mixture (max. 1:1) or water-glycerine mixture
(max. 2:1)
Installation return pipe of a solid fuel boiler / flow pipe into a heating circuit,
the min. distance of the pipe axis from a wall is 100 mm
Code 17980
Technical data of CSE MIX W8_SC 1M pump station
Fluid working temperature 5 - 90 °C
Max. working pressure 10 bar
Min. working pressure 0.5 bar
Max. ambient temperature 5 - 40 °C
Max. rel. humidity 80 % non condensing
Insulation material EPP RG 60 g/l
Valve Kvs 6.3 m3/h
Leakage rate < 1% Kvs at 5 m H2O pressure difference
Max. pressure difference 5 m H2O
Overall dimensions 305 x 165 x 220 mm
Total weight 3.9 kg
Connections 3 x G1“M

3 │
3. Pump Station Connection Diagram
The pump station may be installed in either horizontal or vertical position.
CSE OTS ZV W
CSE MIX W
CSE MIX W
HW STORAGE TANK
THERMAL STORE

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4. Mixing Valve Actuator
actuator wiring
- marking 1, 2, 3 located on the cables
Technical data
Torque 5 Nm
Angle of rotation 90°
Shift time 120 s
Control 3-point
Auxiliary switch none
Power supply 230 V AC
Max. power input 2,5 VA
IP rating IP42
Protection class II by EN 60730-1
Ambient temperature 0 - 40 °C
Cable (cross section area - length) 3 x 0.5 mm² - 2 m
(1) - blue
(2) - black
(3) - brown
230 V, 50 Hz

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5. Wilo-Para SC Pump
5.1. General Information
The high efficiency circulation pumps of the PARA
SC series are used exclusively for the circulation of
liquids in hot water heating systems. Operating the
pump in other systems or
in systems lacking water, containing air or in
unpressurized systems can lead to its rapid
destruction.
5.2. Pump Description
1 - Pump housing
2 - Pump motor
3 - Condensate drain openings
4 - Pump housing bolts
5 - Control module
6 - Rating plate
7 - Pump adjustment button
8 - LED indication of operation/fault
9 - Display of the selected pump operating mode
10 - Display of the selected pump curve (I, II, III)
9
8
7
10
3
2
1
4
5
6

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5.3. Permitted and Prohibited Pump Positions
Permitted Positions Prohibited Positions
5.4. Pump Wiring
The pump must be wired / disconnected by a qualified person in compliance with EN 50110-1!
Plug the power cable (2) into the connector on the pump so that the connector lock (1) is in the
correct position, see Fig.
1 Lock
2 Power cable connector
brown - L
blue - N
yellow-green - PE
2
1
POWER SUPPLY (1 ~ 230V, 50 Hz)

7 │
5.5. Pump Control
Constant speed operating mode and pump performance curve III are preset as factory settings for
the PARA SC pump. After switching on, the pump runs at the factory setting or at the last setting.
The settings can be changed using the operating button, see below.
Briefly press the control button to:
select the pump operating mode: constant speed, Δp-v or Δp-c and the pump performance curve
(I,II,III)
Press and hold the operating button for the specified time to activate:
- Pump venting function - hold the control button for 3 seconds.
- Manual restart - hold the operating button for 5 seconds.
- Locking / Unlocking the operating button - hold the button for 8 seconds.
- Factory setting - hold the control button for at least 4 seconds and switch off the pump
by disconnecting it from the mains.
SETTING THE PUMP PROFILE
Briefly press the operating button for 1 second to select operating mode
and pump performance curve. LEDs show pump settings (operating mode /
performance curve).
OVLÁDACÍ TLAČÍTKO
OPERATING BUTTON

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LED indicators Operating mode Performance curve
constant speed
constant speed
Δp-v variable
Δp-v variable
Δp-v variable
Δp-c constant
Δp-c constant
Δp-c constant
constant speed
PUMP VENTING
If air is present in the pump:
o Activate the pump venting function by pressing and holding the
operating button for 3 sec. The upper and lower rows of LEDs
will flash in 1sec interval, see Fig.
o Pump venting takes 10 minutes, after that the pump returns
to current mode. In order to cancel pump venting, press and
hold the operating button for 3 sec.
sec
3
min10

9 │
MANUAL RESTART
If the pump has been inactive for a long time or is blocked, activate the
manual restart by holding the operating button for 5 seconds. The LEDs flash
sequentially clockwise. The manual restart takes max. 10 minutes before the
pump returns to normal operation. To cancel the manual restart, hold down
the operating button for 5 seconds.
If the pump does not get unblocked, contact a qualified technician.
OPERATING BUTTON LOCKING / UNLOCKING
To lock the operating button, press it for 8 seconds.
The selected setting then starts flashing and cannot be changed.
To unlock, hold down the operating button again for 8 seconds
and the LEDs will stop flashing.
FACTORY SETTINGS
To return to the factory settings, press and hold the operating button for at least 4 seconds (all
LEDs flash for 1 second) and turn off the pump by unplugging. When switched on again, the
pump will run at the factory settings.
sec
5
min10
sec8

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PUMP OPERATING MODES
Variable differential pressure Δp-v
It is not recommended to use variable differential pressure for solid fuel boiler pumps!
The Variable differential pressure operating mode is recommended in systems where it is advisable
to reduce the discharge pressure of the pump in parallel with the decreasing required flow rate.
A typical example is a heating circuit with radiators equipped with thermostatic valves, where the
selection of this operating mode can reduce the noise from thermostatic valves which is caused by
closing too many radiators in the system. This mode, on the other hand, is unsuitable for circuits with
heat sources where the reduction of the head and flow can make these sources even inoperable.
By reducing the discharge as the flow decreases, the pump's power consumption and therefore the
operating costs are significantly reduced (see graph Q-P). In larger heating circuits and in circuits
where there are significant differences in heating demand in separate heating zones, this mode may
temporarily cause insufficient heating. In these systems, it may be preferable to switch the pump to
Δp-c mode.
Performance curves
0
1
2
3
4
5
6
7
0
20
40
60 III
I
II
III
I
II
H [m]
max.
Δp-v
max.
Q [m³/ h]
0 1 2 3 4
P [W]
1
Q [m³/ h]
0 1 2 3 4
Δp-v (variable)

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Constant differential pressure Δp-c
The Constant differential pressure (constant delivery head) operating mode is suitable for hydraulic
circuits of heat sources (boilers, heat pumps, solar thermal systems etc.), hot water storage tanks,
heaters, underfloor heating systems and large heating circuits where the previous mode Δp-v could
cause insufficient heating through discharge reduction.
By decreasing the required flow, the pump maintains a constant delivery head, thus the pump power
consumption decrease is more gentle than in the Δp-v mode.
Performance curves
III
II
I
0
2
4
6
8
0
20
40
60 III
I
II
max.
Δp-c
max.
H [m]
P [W]
1
0 1 2 3 4
0 1 2 3 4
Q [m³/ h]
Q [m³/ h]
Δp-c (constant)

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Constant speed
Constant speed operating mode means that the pump does not adjust its speed in any way
depending on the flow rate or discharge of the hydraulic circuit. The flow and discharge of the
pump are thus entirely dependent on the speed setting set (I, II, III) and the hydraulic circuit
settings. This mode is used when the more economical Δp-c mode is not suitable. This is the
same mode as in the older types of classic circulation pumps where the speed I, II, III was set
by a selector switch.
For example, this mode may be suitable for older circuit types where flow is regulated by throttling
and this method required to be maintained. Furthermore, it may be suitable for solid fuel boilers
that are equipped with older types of TSV valves with balancing using a manual throttle valve, or
in other similar specific cases of requiring a constant pump performance.
Performance curves
0 1 2 3 4
max.
0
2
4
6
8
0
40
60
I
III
II
I
III
II
max.
Q [m³/ h]
Q [m³/ h]
H [m]
P [W]
1
0 1 2 3 4
constant speed I, II, III
20

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5.6. Technical Data
PARA 25/8 SC
Electric Data
Electric Data 1 ~ 230 V, 50 - 60 Hz
Power input (min./max.) 2 / 75 W
Current (min./max.) 0.03 / 0.66 A
Max. speed 4800 rpm
Speed control frequency converter
Energy Efficiency Index ≤ 0.21 dle EN 16 297/3
IP rating IPX4D
Motor protection integrated

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5.7. FAULTS AND THEIR REASONS
The LED light signals a defect. The pump will switch off (depending on the defect
type) and try to restart.
FAULTS REASONS TROUBLESHOOTING
Pump does not run despite
power supply switched on Pump not energized Check circuit breakers or fuses in the system control
Pump is making noise Cavitation due to insufficient
inlet pressure
Increase pressure in heating system
within permissible range or check
that circuit breaker has not tripped
Check head setting, if necessary, set
lower head
Building not warming up Heat output of heating surfa-
ces too low
Set higher temperature at controller
and fully open radiator valves. If this
does not help, increase circulation
pump performance.
If the fault cannot be rectified, contact a specialized technician.
GREEN IS LIT
RED IS LIT
FLASHING RED
FLASHING RED AND GREEN
1 - pump is running in trouble-free operation
1 - rotor is blocked
2 - electric motor winding defect
1 - power supply lower/higher than 230 V
2 - electric short circuit in pump
3 - pump overheated
1 - unforced fluid circulation through the pump
2 - pump speed lower than desired
3 - air in pump
LED signals State description and possible fault reasons

15 │
6. Installation options
The pump station comes with a mixing valve in the left-hand position (see Fig. 1). If this installation
position is convenient, there is no need to make any adjustments. When needed, the mixing valve can
be rotated to the right-hand position (see Fig. 2). After the valve is turned by 180° and the fittings
tightened, the actuator lock shall be unscrewed and screwed into the opening at the other valve side
(see Fig. 2) and the position of the valve member and actuator changed (see the paragraph and
pictures below).
RIGHT-HAND
POSITION
LEFT-HAND
POSITION
Fig. 1 Fig. 2
ACTUATOR LOCK

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Actuator adjustment
Having turned the valve to the right hand position, turn the D-shaft in such a manner that the valve
member is between inlets 1 and 3, turn the plastic red wheel into its proper position (see Fig. 4), and
finally fit the plastic adapter (see Fig. 4).
The flat edge of the shaft and the arrow on the plastic adapter are located across from the valve
member!
Fig 3
Fig. 4
D-SHAFT ARROW
LEFT-HAND POSITION RIGHT-HAND POSITION
D-SHAFT
VALVE MEMBER
RED WHEEL

17 │
Prior to fitting the actuator on the plastic adapter, switch it to manual control, set the control knob to the
middle of its control range and then fit the actuator onto the adapter already on the valve. The control
knob shall be able to turn freely both to left and right by 45°. When turned to the right by 45°, the path
1 is closed, and when turned to the left by 45° the path 3 is closed. Having performed the check, turn
the knob back to automatic control.
MANUAL CONTROL SWITCH
CONTROL KNOB
2
3
1
D-SHAFT
VALVE MEMBER
DIVIDE BETWEEN RED AND BLUE
SECTIONS ON THE LABEL

REGULUS spol. s r.o.
E-mail: [e-mail]
Web: www.regulus.eu
v1.1-11/2020
After the actuator is fitted, the correct position of the round indication label (hot/cold, red/blue) shall be
checked as to the right function and position of the valve; the colours shall correspond to the cold and
hot water connections. In case of a vertical installation in central heating, the red mark on the label shall
be on the right-hand side for left-hand installations (see Fig. 5) and on the left-hand side for right-hand
installations (see Fig. 6).
Fig. 5 Fig. 6
In case of a horizontal installation with a solid fuel boiler, the red mark on the label shall be on the right-
hand side for right-hand installations (boiler to the left from the pump station, see Fig. 7) and on the
left-hand side for left-hand installations (boiler to the right from the pump station, see Fig. 8).
Fig. 7 Fig. 8
©2020 We reserve the right to errors, changes and improvements without prior notice.
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