Regulus CSE OTS ZV W User manual

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CSE OTS ZV W8-SC
CSE OTS ZV W8-SC
EN
Installation and Operation Manual
CSE OTS ZV W8-SC PUMP STATION
with non-return valve, for heating systems

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1. Introduction
CSE OTS ZV W8-SC pump station is designed to be installed in unmixed hydraulic circuits in heating
systems where a non return valve is required. The pump station provides circulation through the
concerned heating circuit, preventing circulation in the opposite direction.
2. Description of the pump station
The pump station consists of a Wilo Yonos PARA 28/8 SC pump including a power cable, a ball valve
with a non-return valve, fittings with a ball shut-off valve, thermometer and insulation.
Main features
Application on a flow pipe in heating systems
Description consists of a Wilo Para 25/8 SC pump, a ball valve with a non-
return valve, fittings with a ball valve, thermometer and insulation
Working fluid water, water-glycol mixture (max. 1:1) or water-glycerine mixture
(max. 2:1)
Installation on a flow pipe in heating systems, the min. distance of the pipe
axis from a wall is 100mm
Code 17979
Technical data of CSE OTS ZV W8-SC pump station
Fluid working temperature 5 - 90 °C
Max. working pressure 10 bar
Min. working pressure 0.5 bar
Ambient temperature 5 - 40 °C
Max. rel. humidity 80 % non condensing
Insulation material EPP RG 60 g/l
Overall dimensions 305 x 165 x 170 mm
Total weight 2.8 kg
Connections 2x G 1" F

3 │
3. Flow direction
SMĚR PROUDĚNÍ
4. Wilo-Para SC Pump
4.1. 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.
FLOW DIRECTION

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2
1
9
8
7
10
3
2
1
4
5
6
4.2. 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)
4.3. Permitted and Prohibited
Pump Positions
Permited Pump Positions Prohibited Pump Positions
4.4. 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
POWER SUPPLY (1 ~ 230V, 50 Hz)
brown - L
blue - N
yellow-green - PE

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4.5. 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 / per-
formance curve).
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

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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.
sec5
min
10
sec
8

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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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4.6. 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
Max. head 8.4 m

©2020 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
v1.1-11/2020
4.7. 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
El. fuse defect Check the fuses
Pump not energized Remove power supply interruption
Pump is making noise Cavitation due to insufficient
inlet pressure
Increase pressure in the device
within permissible range
Check head setting, if necessary,
set lower head
Building not warming up Heat output of heating surfaces
too low
Increase the desired value
Set the operating mode to Δp-c
If the fault cannot be rectified, contact a qualified 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