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Manufacturer MPI Group Sp. z o.o.Magazynowa 562-070
ZakrzewoPolandbiuro@mpi.com.pl
MPI Group Limited Liability Company is a company that has been in business for more than 15 years, offering comprehensive solutions in the selection, sales, commissioning and service of environmental equipment, including rainwater management systems, tanks, water systems and filtration. The company combines manufacturing, integration and distribution activities, providing equipment for both individual and institutional customers - hospitals, schools, health centres, hotels. MPI's products are individually designed, tailored to the specific application.
MPI ensures that the products offered are certified to European standards and CE marked. The company has positive opinions of the Institute of Environmental Protection, NIZP (formerly PZH), has a technical approval of the Building Research Institute and a National Technical Assessment, which confirms that the equipment meets building and technical standards in force in Poland.
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Rainwater management system for garden watering, toilet and washing machine supply using the Aquamatic Domestic C Plus rainwater control unit
ATTENTION: FREE delivery of 10m3 Ecoline tanks to any place in Poland - duration of the promotion until 30.09.2025.
Description of operation
Rainwater is collected by a gutter system from the roof surface and directed through downpipes to an underground filter from where it flows by gravity to the Ecoline II tank. A pump pumps water to sanitary facilities (toilet cistern, washing machine) in the building. The system is equipped with a self-priming pump and tap water make-up control. In the event of a shortage of water in the tank, there is an automatic switchover to tap water operation, thus ensuring continuous operation of the system.
Made from a monolithic piece, without seams or welds, with a guarantee of 10 years,
Can be founded up to 40 cm in groundwater,
Possibility of foundation in soils difficult to permeate,
3 DN 100 connections (other dimensions and locations on request)
Installation instructions
There is the possibility of founding the tanks in unfavourable conditions. Ecoline is suitable for soils with unfavourable groundwater conditions. These include, for example, a high groundwater level (up to 40 cm from the bottom of the tank) and impermeable - heavy (clay) soils.
Use of ground cover during installation:
Max. 56 cm ground cover - sand backfill (20 cm layer),
From 80 cm soil cover - backfilling with lean concrete B-10 (20 cm layer),
In case of installation in ground with periodically elevated ground water level (up to max. 40 cm), the backfilling should be made with lean concrete B-10 (20 cm layer).
For more details on installation, please refer to the instruction manual, which can be found in the download area.
The tank cover is made of polyethylene - ideal for green field traffic. Extension of the ascending pipe 45 cm -High 450 mm, diameter 600 mm. The extension includes a DN 600 Gasket, which protects the rainwater tank from outside contamination.
Rainwater filters
Maxi filter with extension
Maxi filter with extension - pre-tank, underground. The Maxi consists of a filter basket with an ascending (extension) pipe placed over the filter (Dimensions: Ø 350 mm, height 570 mm. The extension pipe can be shortened at will). The rainwater filter basket is equipped with a convenient handle for pulling the basket out. It is excellent for use in gardens, ponds and drainage systems. The rainwater filter ensures thorough cleaning thanks to its 0.9 mm mesh size and is therefore also suitable for domestic systems. It is installed directly in the ground in front of the rainwater storage tank or infiltration system.
Floating water intake with floating ball and filter
Thanks to the float, the intake constantly floats about 15-20 cm below the water surface, from where the cleanest water can be pumped from the tank (various types of impurities may float on the water surface). A mesh filter provides additional protection against impurities. Set elements: Float with a diameter of 15 cm, mesh filter - mesh 1.2 mm, non-return valve 1", ferrule 1" with O-ring for suction hose Ø 36 mm, suction hose Ø 36 mm with a length of 2 m.
House filter for 1" water after rainwater control unit
Narur filter with a diameter of 1 " for cleaning rainwater from micro-pollutants.
PressureWave GWS 35LV diaphragm tank
High-quality 35 litre pressure vessel from the PressureWave range. The PressureWave diaphragm vessel is designed for: booster systems, systems subject to thermal expansion, irrigation and hydraulic shock attenuation. The robust construction and innovative technological solutions ensure a long service life. A top quality product. The diaphragm tank maintains constant water pressure in the system. Limits too frequent pump start-ups.
Rainwater central unit Aquamatic Domestic C Plus
The unit pumps rainwater from the tank and delivers it to the indoor installation. In the event of a shortage of rainwater in the tank, the unit allows tap water to be used automatically. There are three main components in one unit: pump, control unit and tap water make-up system. The control unit should be installed inside the house, e.g. in the basement, boiler room or utility room.
Model
AquaMatic Domestic C Plus unit
Max. capacity
4.8m3/h
Max. pressure
5.2 bar
Max. suction depth
8 m
Rated power
880 W
Supply voltage
230 V
Float switch
20 m (without grounding)
Dimensions (W x H x D)
500 × 650 × 240 mm
Weight
30 kg
Additional functionality
Possibility of connecting a booster pump if the distance between the tank and the location of the unit is greater than 10-12 m*.
* This involves suction line losses due to excessive height difference between the bottom of the tank and the air handling unit and/or the distance between the tank and the air handling unit.
This short guide will help you choose the right capacity for your underground rainwater storage tank - without difficult formulas. We will show you how to estimate your needs, count the amount of water from your roof, select the capacity and plan a simple garden installation.
Step 1: Determine what you will use the rainwater for.
List the uses: watering the garden, flushing toilets, laundry, washing the car, housework. This will allow you to estimate the real need for water in a typical week.
Garden watering - take a guideline of 20-25 l/m² per month per season.
Toilet flushing - approximately 35-50 l/person/day.
Laundry - approx. 15-20 l/person/day.
It is advisable to select a tank for 2-3 weeks of typical use - in practice there is no point in storing 'for the whole year'.
Step 2: How much water you collect from the roof (no complicated formulas)
In simple terms, assume: annual rainfall × roof area × runoff coefficient. For most roofs, you can assume a coefficient of around 0.9 (depending on the roofing and the layout of the gutters).
Brief example: calculation of possible rainwater yield
Roof 120 m², annual rainfall ~600mm (approx. 600 l/m²). Estimate: 120 × 600 × 0.8 ≈ 57,600 l/year. This figure helps to select the capacity for a period without rain. And a period without rain can last for 3 weeks. Therefore, you must divide the result by 21 days. That is: (57600 l /365 days)*21 days = 3314 l, the result according to the estimation should be taken as a minimum. Therefore then we choose 4000l , 5000l, 6000l tanks - because of how we will use the rainwater.
Step 3: Selecting the tank capacity
It is most practical to select a tank that will store a supply of water for 2-3 weeks of your needs.
How to calculate capacity: annual rainfall × roof area × runoff coefficient ≈ annual amount of rainwater to be collected.
2000-3000 l - small garden, 1-2 people.
4000-6000 l - family of 3-4 people + garden 200-300 m².
8000-10 000 l - larger garden, intensive watering. 300 m² - more , and with automatic watering.
But you will do this more precisely using the selection calculator below:
In detached houses, underground rainwater tanks are the best choice - they do not take up space in the garden, provide stable temperatures, no water freezing and allow larger capacities without affecting aesthetics.
The best material is PE, HDPE, MDPE plastic - it is lightweight, corrosion resistant, easier to install and above all airtight for many years . It is worth paying attention to water and ground conditions. If the ground water level is high or the soil is clayey, flat tanks such as the F line, Bolt, Eco line Slim, etc., are the best choice. On the other hand, if the conditions are normal, any solution can be used. If you have any problems, please contact our customer service.
Step 5: Simple installation in the garden
The simplest arrangement: gully filter in front of the tank or basket filter, underground tank, floating intake, automatic pump and point of use (tap). This makes watering convenient and economical.
Summary:
Estimate the weekly consumption (garden + house).
Calculate the roof potential (rainfall × area × ~0.9) and divide by 365 days and multiply by 21 days ( 2-3 weeks of drought).
Select an underground storage tank taking into account the yield (calculated from the roof area) and contrast it with the consumption e.g.: water in the garden. Select capacity
For example: family of 3-4 people + garden of 80-150 m² → 4000-6000 l usually works well. Larger garden / intensive watering → 8000-10 000 l. Verify with the calculator above.
Is it possible to supply toilets with rainwater?
Yes - using a suitable system (rainwater control unit/automatic switchover) and filtration.
What about excess water?
Plan an overflow to an infiltration or rainwater drain in accordance with local regulations.
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