Marsh Rain Cell Operation Manual

Installation and Operation manual

Rain Cell

- This document must be read prior to installation!

- Follow all safety notes!

- Keep in a safe place for future use!

This installation and operation manual contains important notes and warnings.
Please read the installation manual in any case prior to electrical connection
and start-up.

We reserve the right to make technical modifications. 01.06.2015

Page 1

1.1 Preface

Please read and follow this operating manual in order to achieve a long service life of the
unit. Please follow the installation manual when installing and commissioning the unit. The
product has been tested at our works. This means that it has been delivered free from
defects. However, in case of a failure during operation, please see chapter 2.6.

1.2 Warranty (excerpt)

The warranty period is 24 months from the date of purchase of the product.
Within the guarantee period, we will eliminate functional faults free of charge which are
due to manufacture or material defects. These are failures which occur despite proper
connection, proper handling and due consideration given to the operating and installation
manual.

„Please see the valid warranty regulations in our current general Terms & Conditions“.

1.3 General notes

• This unit has to be installed in accordance with the technical guidelines

such e.g. BS EN 1717!

• The user is responsible for the following actions:

- of proper installation

- To avoid risks due to improper operation.

• The unit has been designed solely for use:

- at 230 V, 50 Hz AC voltage,

- in rain water harvesting systems,

- for mains water supply to the storage tank,

- up to a water temperature of 35° C,

- In the vicinity of residential, trade and industrial areas as well as small
sized companies.

• The following kinds of operation are prohibited::

- the pumping of polluted or contaminated sewage water,

- the pumping of water with acid content, as well as generally corrosive
liquids,

- the pumping of water with a temperature higher than 35° C.

- the pumping of flammable and / or explosive media,

- Installation in frost-prone environment

- the operation in a dry state.

Page 2

1.4 Protective measures

• The user must strictly observe the accident prevention measures of

the respective country.

• The corresponding VDE (Association for Electrical, Electronic &
Information Technologies), national and EVU (European Association for
Accident Research and Analysis) regulations in the respective valid
version must be observed with respect to the electric installation. The
electric installation must be carried out by certified technicians, taking
VDE 0100 or similar national regulation into account.

• It is recommended during commissioning of the submersible pump,
that persons not be in the water (rain storage container) and that this
work not be done with wet hands.

• The power supply to the submersible pump is to be disconnected during
repair work; to do this the plug should be removed from the electric
socket.

• Any kind of repair, installation, or modification work done on the
submersible pump and any of its components which have live parts can
cause serious injury to persons, and even fatalities.

• At the location of the installation the source of electricity should be fused
with an earth leakage circuit breaker (30 mA).
The user may not tamper on their own initiative with any parts or systems
in any way which is not called for in the operating and installation
instructions.

No financial liability will be accepted resulting from improper installation or
operation.

1.5 Scope of supply

• Multistage submersible pump

• ¾“ solenoid valve with stainless steel bracket, backup and funnel

• Float switch 20m

• Connection box

• Installation and Operation manual

1.6 Product description

The Rain Cell controller is central to your rainwater harvesting system. The submersible
pump in the tank controls the water flow from the storage tank to the designated outlets
for the consumer. The automatic pump controls the volume and pressure that is required.
The submersible pump switches on automatically when there is a reduction of pressure,
(ie one of the outlets is open), and once the outlet is closed again the increase of
pressure automatically turns the pump off. The submersible pump also has dry-run
protection which prevents the pump running should there be no water available. The
solenoid valve mounted in the building will fill the storage tank (according to DIN EN 1717)
with mains water automatically when required, this ensures that there is always some
water in the storage tank at all times.

Page 3

1.7 Mounting of the unit

Prior to installing the unit, make sure to observe the back pressure level1) when connecting
the outgoing drainage at later time, refer to chapter 1.9 connecting overflow.

1)

Back pressure level:

Level, can flow back up to what an overloaded outgoing drainage system. Usually
corresponds to the respective street level. Check with your local building authority.

Mount the stainless steel holder of the unit:

• In a dry room, free of frost, e.g. utility room.

• Above the maximum water level of the rainwater storage tank (see fig. 1).

- Ensure that the pipework from the funnel to the rainwater tank is at least a constant
gradient of 1% and there are no vertical rises.

• On a level floor (to avoid distortion within the unit).

• In a room with drainage point in the floor.

• Vertical (to prevent malfunctions).

Higher than the maximum water level in

Fig. 1

the storage tank including gradient up line.

Higher than the back pressure level

1)

1.8 Mounting of the solenoid valve

• Ensure the funnel is placed in the metal

bracket with the overflow facing outwards,
then rotate the funnel 90 degrees so that the
overflow is under the metal bracket. This
will ensure the air gap cannot be breached.

- If not go out following the DIN EN 1717!

• Solenoid valve to align the holder and fasten
tightly from below with the ¾“-½“nipple.

- Pay attention please to the flow direction
(down arrow)!

• Aerator screws tight on the nipple

- Pay attention please to the rubber seal!

Page 4

Fig. 2