Wisy Optima User manual

● Operating

instructions for

the OPTIMA

rainwater unit

● Please read through

these instructions

carefully before

you attempt to

install and use the

rainwater unit!

● 3- or 4-stage

self-priming

centrifugal pump

● Operates fully

automatically to

supply household

appliances on

demand

● Automatic mains

water top-up

with integral

9-litre top-up tank

● Energy efficient

technology, standby

usage less than 0.2 W

InstallatIon InstructIons

Rainwater Unit

OPTIMA

WISY

Rainwater Harvesting

Original

ΩΩ

OPTIMA

30 %

5 %

Harvesting rainwater

reduces mains water

consumption by:

50 %!

WC:

30 %

Laundry:

13 %

Garden irrigation:

5 %

Cleaning:

2 %

13 %

2 %

1 Vortex ﬁne ﬁlter (WFF)

2 Inﬂow calming

3 Floating

suction ﬁlter

4 Multisiphon

5 Rainwater storage tank

6 Sigma rainwater unit

7 Filter collector (FS)

8 Rainwater barrel 500 l

Stage 2

WISY inﬂow calming

prevents resuspension of

sediment and distributes

the fresh, oxygen-rich

water in the storage tank

Stage 3

Water is extracted with

the WISY ﬂoating suction

ﬁlter suspended

at the optimum height

Stage 4

Overﬂow with skim effect,

odour seal, small animal

guard and backﬂow pre-

vention with WISY multi-

siphon

The WISY 4-stage

rainwater cleansing

system

The WISY 4-stage rainwater cleansing principle in the single-family home

Stage 1

Filtering with WISY

vortex ﬁne ﬁlter with

separation of dirt particles

and oxygen enrichment

OPTIMA Rainwater Unit

Please read through these installation instructions carefully

before you attempt to install and use the rainwater unit!

These installation instructions include the following information relating to:

● Applications

● Handling and storage instructions, scope of delivery

● Components diagram

● Safety instructions

● Preparations for installation, assembly

● Commissioning

● Design and operating principle

● Maintenance, repairs

● Materials

● Troubleshooting guide

● Technical data

● Environmental guidance

● Declaration of conformity

● Guarantee conditions, device number

Applications

The OPTIMA rainwater unit by WISY is the control centre of the rainwater har-

vesting system.

OPTIMA works without suction pipes. It pumps the rainwater out of the storage

tank and feeds it under pressure into the rainwater supply circuit. At the same

time, the OPTIMA checks the ﬁll level of the storage tank and tops up the system

with mains water when required.

The OPTIMA can supply toilet ﬂush, washing mashine and garden Irrigation with

preﬁltered rainwater for detached/semi-detached houses up to three storeys. Op-

tima needs a minimum ﬂow of 5 Liter per minute for operation. All taps and pipes

must be sealed and tight closing. For more than 20 starts per hour an additional

surge tank is necessary. Sand or dirt must not be in the water as they can destroy

the OPTIMA unit.

Delivery / shipment of the unit

The standard version of the Optima unit is generally shipped as a parcel contai-

ning two cardboard packages. The cardboard packages must not be dropped,

crushed or handled with force. As soon as the packages are received, they must

be checked for any signs of damage.

The cardboard packages or their contents must be stored in a safe, dry and frost-

free location.

Scope of delivery

● Wall unit with normal-suction, multi-stage centrifugal pump with automatic

switch and pressure indicator Zeta 02: Max. pressure in rainwater operation:

4.2 bar or 5.3 bar . In mains water operation 3.3 bar or 4,4 bar

●Automatic mains water top-up (to DIN EN 1717) of integrated top-up tank

(9 litres) when rainwater runs out, with ﬂoat valve, dirt ﬁlter and safety

emergency overﬂow (DN 70).

●Cover, grey color, to protect the rainwater unit.

●Wall mounting kit.

●Separate submersible pump with 20 m connecting cable. Installation inside

the storage tankwith ﬁx mounted vertical ﬂoat switch for dry run protection and

ﬁx mounted ﬂoating ﬁne suction ﬁlter..

● Screw and rope to lift the submersible pump

Contents

Wall unit

Read the operating instructions

carefully before commencing

assembly and installation work

and store them in a safe place for

later reference. Follow the safety

instructions!

Storage tank equipment

Failure to heed the infor-

mation indicated by this

symbol could result in

serious or fatal injury.

Failure to heed the

information indicated by

this symbol could result

in death by electric shock.

Failure to heed the information indi-

cated by this symbol could result in

damage to the equipment, or damage

caused by the equipment.



1 Mains water connection (top-up)

2 Pumped rising main (submersible pump)

3 Pressurized outlet

4 Mains plug for complete system

5 Electrical connection (blue socket)

for submersible pump

6 Emergency overﬂow drain connection (DN 70)

7 Operating pressure indicator

(pressure gauge)

8 Normal-suction centrifugal pump

9 Schaltautomat ZETA 02

10 Base frame

11 Connecting hose to pressurized outlet

12 Submersible pump with ﬂoat switch

13 Floating ﬁne suction ﬁlter (FFSF)

14 Screw plug for venting/ﬁlling

Accessories not included in the

scope of supply:

15 Isolating valves for mains water pipe

and rainwater circuit

16 Multisiphon (odour seal and

backﬂow prevention)

17 Water meter/mains water top-up

18 Water meter/rainwater

19 Flexible connecting hoses

Illustration does not show connecting kit for

extending the electric cable

Guide to components

2 19

311148

1213

Safety instructions

Read the operating instructions carefully before commencing assembly and in-

stallation work and store them in a safe place for later reference.

Do not lift or pull the ﬂoat switch by its electric cable.

Never climb inside the storage tank when the OPTIMA rainwater unit is connec-

ted to the power supply. Always unplug the OPTIMA rainwater unit to discon-

nect it from the power supply before carrying out any inspection, maintenance

or repair work to the OPTIMA rainwater unit or inside the storage tank.

Never leave the rainwater storage tank unsupervised when it is open! No one ex-

cept specially trained personnel is allowed to climb inside the rainwater storage

tank. When working inside the tank, personnel must be supervised at all times

and must take appropriate safety precautions (e.g. wear a recovery harness).

If the residual current device or the fuse trips, the trip cause must be identiﬁed

and rectiﬁed by the manufacturer / by a contractor appointed by the manufac-

turer.

If the power cable to the OPTIMA unit or the ﬂoat switch is found to be dama-

ged, it must be replaced by the manufacturer / by a contractor appointed by the

manufacturer.

Installation work which involves particular hazards (e.g. risk to mains water sup-

ply or the electrical installation) must always be carried out by a properly trai-

ned, approved plumber or electrician who is at least qualiﬁed in the following

technical areas:

● Selection of appropriate tools and suitable electrical and installation

materials

● IP degrees of protection

● Correct methods of installing electrical and other materials

● TN-C system, TN-S system and appropriate additional measures

where necessary.

● Drinking water protection in accordance with DIN EN 1717, DIN 1989

Failure to install the equipment properly can endanger your own life and the

lives of people who use the equipment.

The system must be connected to a 230 V, single-phase AC (50 Hz) supply.

The SIGMA unit must be operated with clean water (rainwater or mains water)

which does not contain aggressive, abrasive or solid substances.

Failure to adhere to these instructions and/or unauthorized interference with the

OPTIMA shall exempt WISY AG from any liability for any personal injuries, pro-

perty damage and/or damage to individual components of the OPTIMA system.

The OPTIMA product is generally shipped in a cardboard box. The cardboard

box must not be dropped, crushed or handled with force, and must be inspec-

ted for damage as soon as it is received.

The cardboard box or its unpacked contents must be stored in a safe, dry, and

frost-free location and protected against the ingress of dirt or contaminants.

Preparations for installation

The OPTIMA rainwater unit should be installed by a specialist installation compa-

ny. This is a basic requirement for maintaining the validity of the manufacturer‘s

guarantee.

Please note: The OPTIMA must be installed above the backﬂow level. Special

protective measures must be implemented if the unit is installed and operated

below the backﬂow level!

If the maximum ﬁll level of the storage tank is higher than the bottom edge of

the installed OPTIMA wall unit, the pumped rising main connection at the wall

unit must be equipped with a solenoid valve (normally closed) and possibly an

isolating valve (for service work). The solenoid valve is opened only when the

loading pump is started.

If a reliable, permanent connection cannot be made between the emer-

gency overﬂow of the mains water top-up tank and a domestic drainage

connection, a ﬂoor Drain must be provided.

The water column between the pump integrated in the wall unit and the highest

operating point (valve at appliance) must not exceed 15 m!

Piping or hoses must be cleaned or ﬂushed through before use to remove any

deposits of dirt/dust caused by building work!

Important: The protective plugs ﬁtted over the connectors on the wall unit

and the submersible pump must be removed before hoses or pipes are

connected to the units!

Note regarding the backﬂow

level and essential installation

conditions

Additional instructions

Delivery / shipment of the unit

Flush pipes before connecting

to the wall unit

Electrical connection

Installing the submersible pump

Assembly

● Attach the wall mounting kit horizontally according to the dimensions given.

The wall-mounting bracket can be used as a drilling template; the distance

between the two holes is 280 mm. The rainwater unit can then simply be

inserted in the groove of the bracket.

● We recommend the use of our hose connection kit (Item No. RW 7800) to

connect the wall unit. Furthermore, all connections on the wall unit must be

ﬂat-sealing.

●Connect the incoming mains water pipe to the mains inlet connector on the

OPTIMA unit. Use a ¾” connecting hose with stainless steel sheath (acces-

sory) to connect the mains water pipe to the mains inlet connector on the

OPTIMA wall unit. The top-up ﬂow rate is approximately 95 l/min with a mains

pressure rating of 3 bar (= 300 kPa).

●Important: If the mains pressure rating at the installation site is less than 3 bar

(= 300 kPa), it may be necessary to increase the cross section of the mains

pipe (e.g. to 1”). If the mains pressure rating is higher than 5 bar (= 500 kPa),

it may be necessary to install a pressure reducing valve in order to limit the

ﬂow pressure to between 4 and 5 bar (= 400 to 500 kPa). Please consult

your installation specialist or contact WISY AG directly. It is also advisable to

install an isolating ball valve (with dirt trap) between the mains water supply

and the connecting hose to the wall unit

●Connect the emergency overﬂow (DN 70) of the mains water top-up tank us-

ing an odour seal (siphon) to a domestic drainage connection or feed it back

to the storage tank.

●If the unit is installed below the backﬂow level, an additional backﬂow preven-

tion device (multisiphon) must be provided. l Connect the OPTIMA unit to the

household rainwater circuit using a ﬂexible connecting hose and an isolating

ball valve with drain valve (accessory). In order to record water consump-

tion, it is advisable to ﬁt a water meter in the pressurized rainwater outlet

hose and the mains water top-up hose, as shown in the illustration.

●In order to record water consumption, it is advisable to ﬁt a water meter in

the pressurized rainwater outlet hose and the mains water top-up hose, as

shown in the illustration.

●Place the pump with ﬂoat switch and ﬁne suction ﬁlter in a vertical position on

the base of the storage tank!

●Important: Never lift or pull the submersible pump by the cable! Please use

the plastic carrying strap (supplied with the unit)! Use a pressure hose or a

rigid PE pipe to connect the submersible pump to a ﬂexible connecting hose

(accessory) of the rainwater unit (diameter of pressure hose 1”). Do not install

any ﬂow resistances (e.g. water meters, backﬂush ﬁlters) in the pumped ris-

ing main between the loading pump and the wall unit.

● The mains electrical connection of the OPTIMA unit (alternating current,

single-phase, 50 Hz, 230 V) must be protected by an earth-leakage circuit-

breaker (0.03 A) and a 16 A fuse. It is essential that all electrical installation

work is carried out in compliance with the relevant safety regulations!

●A blue socket is provided on the underside of the wall unit to connect the

electrical supply to the submersible pump (loading pump). No other item of

equipment may be connected to this socket! The loading pump must not be

connected to the electrical supply at the wall unit until the pump has been

vented.

Assembling the wall-

mounting bracket

Installing the wall unit

Top

rear panel

of casing

Note height of

top edge of unit

Insert

Ratio between Distance from loading pump

to wall unit and the maximum Delivery height.

When greater Heights or longer pipes are

needed we recommend to use the Rainwater

unit OptimaPlus or Maxima

Height in meters

Pipe length in meters

10 12 14 16 18 20 22 24 26



●If the mains connection cable of the wall unit becomes damaged, a replace-

ment cable must be obtained from the manufacturer, from a service partner

or from an authorized specialist supplier.

Important: The pumps must not be put into

operation, or even tested, unless the system

is ﬁlled with water.

Make sure that the storage tank is ﬁlled with a

sufﬁcient quantity of water. The submersible

pump should be completely immersed in

water and the ﬂoat switch must be ﬂoating.

Basic operating principle

with two pressure pumps

Top-up with mains water

Commissioning

before starting the operation the water level in the tank must be at least 0,5 m.

The submersible pump must be completely immersed in water

1. Flush all pipes to make sure all dirt from construction is removed

2. Venting of the pump integrated in the wall unit by the loading pump:

Undo the venting screw on the pump in the wall unit, connect only the

loading pump to a nearby electrical supply and wait until water starts to

ﬂow from the opening of the venting screw, then close the screw. pull out

the electrical plug of the loading pump and connect it to the wall unit (blue

socket on underside of the wall unit).

3. Flush the mains water pipe and connect it to the wall unit. Connection

is on top right side. Observe the ﬁlling of the 9 Liter container. The ﬂoat

switch must not touch the walls and must close in due time. Water must not

overﬂow into the emergency overﬂow.

4. Open the valves at the appliances.

5. Connect the OPTIMA to the electricity supply.

6. Close the Cover of the water container

7. As soon as system all air is removed from pipes, close the valves at the

appliances! The OPTIMA unit is ready to operate.

Design and operating principle

The OPTIMA system developed by WISY essentially operates with two pressure

pumps: The submersible pump (or „loading pump“) of the OPTIMA system is

installed in the storage tank. It is equipped with a ﬁne suction ﬁlter and a ﬂoat

switch. The loading pump pumps the rainwater to the normal-suction, multi-

stage centrifugal pump in the wall unit. As a result of the admission pressure,

the centrifugal pump is required only to pump and the mains water top-up inlet

pipe remains closed.

If a valve at one appliance (e.g. toilet ﬂushing system) is opened, the pressure in

the circuit drops. When the factory-set pump starting pressure (1.5 bar) on the

automatic switch is reached, both pumps of the rainwater unit start up. When

the valves at all appliances are closed again, the pump control system (automa-

tic switch) turns off both pumps when the operating pressure is reached.

Note: If a „drip irrigation“ system (often computer-controlled) is to be connected

as an appliance to the OPTIMA, a small expansion vessel (around 15 l capacity)

must be installed downstream of the wall unit in the rainwater circuit. The expan-

sion vessel used for this purpose must be of the „ﬂow-through“ type.

Switchover to mains water top-up is fully automatic. If the storage tank is empty,

the ﬂow switch turns off the loading pump. Since the admission pressure then

drops to zero, mains water is automatically sucked out of the top-up tank of the

OPTIMA system. The water level in the top-up tank then falls, causing the ﬂoat

valve for the mains water inlet to open so that mains water can be supplied to

the centrifugal pump.

If it is necessary to temporarily operate the OPTIMA system exclusively in mains

water operation (e.g. to carry out maintenance on the storage tank), then the

loading pump need only be electrically disconnected from the wall unit (remove

plug from socket on OPTIMA unit!).

The mains water top-up system is implemented as an open outlet in accordance

with DIN EN 1717 (formerly DIN 1988/4). Furthermore, a continuous exchange of

water takes place automatically in the mains top-up tank.

The tank can be topped up with approximately 95 litres of mains water per minu-

te if required. The mains water top-up tank has a storage capacity of 9 litres and

is also ﬁtted with an emergency overﬂow (DN 70) as an additional precaution.

A pressure gauge in the sight glass of the OPTIMA indicates the relevant system

pressure at which the rainwater unit is currently operating.

When the system is completely empty of water, the dry run protection system

integrated in the automatic switch shuts down both pumps.

Shutdown of loading pump

Water exchange in the mains water

top-up tank

Operating pressure indicator

Integrated dry run protection

Maintenance and servicing

6-monthly control

● Inspect the water circuit connections for leaks

● Perform a function test on the pumps and check the system

pressure indicator

● Test the pump start and stop points set on the automatic switch

● Check the level indicator (compare actual tank ﬁll level with

indicated ﬁll level)

● Perform function test on mains water top-up system, for example, by

disconnecting the electrical power supply to the loading pump at the

wall unit and opening a valve at an appliance at the same time

● Inspect the mains water inlet; if necessary, clean the dirt trap at the

inlet of the ﬂoat valve and the dirt trap at the isolating valve

● Check the ﬁne suction ﬁlter (inspect visually and clean if necessary)

● Inspect the vertical ﬂoat switch at the loading pump (if necessary,

clean the ﬁlter at the casing of the vertical ﬂoat switch)

If it is necessary to perform maintenance work in the storage tank, the

electrical supply to the submersible pump must be disconnected.

Repairs

All repair work must be carried out by the manufacturer or by contractors

whohave been explicitly approved.

Repairs, modiﬁcations to components or modiﬁcations to the OPTIMA

installation carried out by unauthorized persons shall invalidate the guarantee!

The OPTIMA rainwater unit must be

disconnected from the mains power

supply before any maintenance work is

carried out on the open storage tank.

Compliance with the safety instructions

(see heading „Safety instructions“ in this

document) is absolutely essential

Materials

Horizontal, multi-stage centrifugal pump

●Stainless steel 1.4301 (pump casing, casing cover)

●Nickel-plated brass (screw plug (for ﬁlling))

●Stainless steel 1.4401 (pump shaft)

●NORYL (impeller)

●Aluminium alloy (motor enclosure)

Submersible pump

●Stainless steel 1.4301 (outer casing, motor enclosure,

bottom cover, suction foot, base plate)

●Stainless steel 1.4305 (pump shaft)

●NORYL (pump casing, handle, top bearing, impeller)

●Polypropylene (ﬂoat switch)

Mains water top-up tank

●Polystyrene (tank)

●KTW-approved plastic (ﬂoat valve)

Floating ﬁne suction ﬁlter (FFSF)

●Stainless steel 1.4301 (suction strainer)

●Polyurethane (suction tube)

●Polyethylene (ﬂoat)

Automatic switch

●Polyamide, polypropylene (casing)

Screw connections, pump connections, valve

●Brass, stainless steel

Connecting hoses

●Natural rubber with stainless steel braiding

OPTIMA casing

●Stainless steel (base frame)

●Polystyrene (cover)

Troubleshooting guide

Type of fault Cause Remedy

OPTIMA is not supplying

water to the appliance(s)

a) The storage tank is empty

and the mains water con-

nection is closed (air suction,

dry run protection is active).

b) The automatic switch does

not start the pumps.

c) The pump is blocked.

d) Power supply to OPTIMA

is interrupted.

a) Absperrventil am TW-An-

schluß zur OPTIMA öffnen.

Haube abziehen und fest

installierte Pumpe über

Auffüllstutzen neu befüllen.

Schraube zudrehen. RESET-

Taste am Schaltautomaten

drücken. Pumpe startet und

schaltet bei max. Druck wie-

der aus. OPTIMA ist wieder

betriebsbereit

b) Netzstecker der OPTIMA

ziehen und wieder einste-

cken. Sofern die Störung

nicht behoben ist, bitte den

Kundendienst rufen.

c) Abhilfe wie unter b).

d) Elektroanschluß überprüfen

(eventuell hat der FI-Schutz-

schalter ausgelöst)!

Switchover from

rainwater to mains water

is not working and the

automatic switch is set

to „Fault“

a) The ﬂoat valve in the mains

water top-up tank is blocked

or does not open.

b) The loading pump in the

storage tank has fallen over

when the water level was

low and the ﬂoat switch has

not switched off the pump.

The pump is sucking in air.

c) The ﬂoating suction ﬁlter

is caught against the wall

of the storage tank and

the pump is drawing in air.

d) The loading pump is defective.

a) Check that the ﬂoat valve is

operating correctly, clean if

necessary, contact customer

service if necessary.

b) Check the position of the

loading pump; if necessary,

change the pump position

or secure it in the correct

position.

c) Check the position of the

loading pump and the FFSF

set and change if necessary.

d) Contact customer service or

installation specialist.

OPTIMA is not producing

enough pressure

OPTIMA pumps have not been

fully vented.

Vent the pumps again.

Integral (centrifugal)

pump is running

continuously

a) Water loss of more than

0.7 l/min from the system.

b) Printed circuit board in the

automatic switch is defective.

a) Inspect the entire installa-

tion and the valves at all

appliances, seal and repair if

necessary.

b) Contact the installation spe-

cialist or customer service.

The integral (centrifugal)

pump is switching on

and off continuously

Leak in the system. Inspect all appliances supplied

by the rainwater circuit for

minor water losses (e.g. drip-

ping taps, valve failing to close

completely in toilet cistern) and

repair.

Continuous top-up with

mains water despite suf-

ﬁcient ﬁll level in storage

tank

a) Suction ﬁlter in submersible

pump is dirty.

b) Interruption in pumped rising

main between loading pump

and OPTIMA wall unit.

c) Interruption in electric cable

between loading pump and

automatic switch.

d) Float switch at loading pump

is blocked or defective.

e) Loading pump is defective

a) Clean external surface of

suction ﬁlter with a brush.

b) Inspect the pumped rising

main and replace if

necessary.

c) Inspect the electric cable

and replace if necessary.

d) Check whether the ﬂoat

switch reaches the ON level;

contact customer service if

necessary.

e) Contact customer service.

Mains water is continuo-

usly running out through

the emergency overﬂow

of the mains top-up tank

(audible!)

Float valve in the mains water

top-up tank is not closing or is

clogged

Clean the valve; contact custo-

mer service if necessary.

Inadequate top-up with

mains water

The ﬂoat valve in the top-up

tank is blocked or the dirt ﬁlter

at the valve inlet is clogged

Clean the ﬂoat valve and/or the

dirt ﬁlter, replace if necessary

The pressure gauge

(pressure indicator) is

showing a raised pres-

sure.

An external heat source (e.g.

radiator) is causing a pres-

sure increase in the OPTIMA

system.

Contact customer service of

your installation company (it

might be necessary to install a

pressure relief valve).

Technical data

Environmental guidance

The OPTIMA is shipped in recyclable packaging. Please recycle it! Waste

electrical and electronic equipment contains valuable materials which can be

reused / recycled. Do not dispose of an old unit as general (non-recyclable)

household waste. Use the recycling centres provided in your area to return de-

fective electrical or electronic equipment so that it can be recycled!

Disposal / recycling of

transport packaging

Disposal / recycling of

old units

OPTIMA 4 bar OPTIMA 5 bar

Power consumption

- horizontal centrifugal pump

- submersible/loading pump

- Standby (W)

600 W Prisma 15/3

510 W Provedo VX

< 0,2

800 W Prisma 15/4

510 W Provedo VX

< 0,2

Mains connection

1-phase alternating current

230 V, 50 Hz 230 V, 50 Hz

Total maximum power consump-

tion for both pumps

10 A 10 A

Degree of protection

- horizontal centrifugal pump

- submersible/loading pump

- automatic switch

IP 55

IP 68

IP 44

IP 55

IP 68

IP 44

Water connections of OPTIMA

system:

Inlet connection of loading pump

- Mains water connection

- Outlet connection to appliances

- Suction inlet / discharge outlet

of loading pump

(OT=outside thread, IT= inside thread)

1“ OT

¾“ OT

1“ OT

1“ grommet / 1¼“ IT

1“ OT

¾“ OT

1“ OT

1“ grommet / 1¼“ IT

Sound pressure level dB

(A) (in decibels)

- in rainwater operation

- in mains water operation

Horizontal centrifugal pump

Delivery head H /Flow rate Q

Rainwater operation: Hmax / Qmin

Hmin / Qmax

Mains water operation: Hmax / Qmin

Hmin / Qmax

35 m / 20 l/min

16 m / 65 l/min

30 m / 20 l/min

8 m / 65 l/min

45 m / 20l/min

17 m / 65 l/min

40 m / 20 l/min

7 m / 65 l/min

Submersible Loading pump

Delivery head H at Q = 25 l/min

Max. immersion depth

8 m

5 m

8 m

5 m

Cut-in pressure of

automatic switch

1.5 bar 1.5 bar

Max. operating pressure in RW operation

Max. operating pressure in mains operation

4,2 bar

3,3 bar

5,3 bar

4,4 bar

Max. permissible operating pressure

8 bar 8 bar

Max. water temperature 35° C 35° C

Capacity of mains water

top-up tank

9 Liter 9 Liter

Mains water connection:

- min. inlet water pressure

- max. inlet water pressure

2,5 bar (250 kPa)

4 bar (400 kPa)

2,5 bar (250 kPa)

6 bar (= 600 kPa)

Top-up ﬂow rate (mains pressure

rating 3 bar (300 kPa), pipe cross

section ¾“)

approx. 95 l/min approx. 95 l/min

Dimensions of OPTIMA system

Depth x width x height (in mm)

315 x 500 x 510 315 x 500 x 510

Electr. connecting cable wall unit

Electr. cable for submersible

pump

1,5 m (3x 1,0 mm²)

15 m (3x 1,00 mm²)

1,5 m (3x 1,0 mm²)

15 m (3x 1,00 mm²)