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3 Transport and interim storage
CAUTION! Danger of damage to the unit!
Danger of damage due to incorrect handling
during transport and storage.
Moisture, frost and mechanical stresses may
cause damage to the unit.
• The unit must be protected from moisture, frost
and mechanical damage during transport and
interim storage.
• During transport and interim storage, the unit
must not be exposed to temperatures outside
the range of -10 °C to +50 °C.
4 Intended use
The RainSystem AF Comfort unit is designed for
pumping rainwater from an existing collector tank.
If there is insufficient rainwater, the unit switches
over automatically to potable water supply from
the potable water network via a replenishment
reservoir.
The main applications are:
• Toilet flushing
• Washing water supply
5.2
Technical data
Flow rate:
Delivery head:
Max. admissible operating pressure:
Max. admissible intake pressure from the
collector tank:
Noise pressure level:
Suction head:
Water temperature:
Max. admissible ambient temperature:
Connected load/Frequency:
Protection class:
Unit control:
Motor protection:
Measurement range of level sensor:
Pressure port connection:
Suction port connection:
Connection for potable water supply:
Max. potable water intake pressure at sole-
noid valve:
Potable water flow capacity at solenoid
valve:
Capacity of replenishment reservoir:
Dimensions of replenishment reservoir
overflow channel:
Fitting dimensions:
Weight (MC 304/MC 305):
Ambient conditions:
22
• Supplying water for garden watering and irrigation
5 Product information
5.1 Type key
Example:
AF-Comfort
MC
3
04
EM
Max. 5 m³/h
Max. 52 m (MC 305 pump) or 41.5 m (MC 304 pump)
8 bar
1.4 bar
Up to 56 dB (A) airborne sound
(at 1 m distance from a unit mounted on a brick wall)
Max. approx. 8 m; static max. 6 m
+ 4 °C to + 35 °C
40 °C
1~230 V/50 Hz
IP 54
WILO RCE-System switchgear
Integrated thermal motor protection
5.0 m Ws measurement range (water column of 0 ... 5 m)
R 1" (female thread: union nut)
R 1" (male thread)
R ¾" (male thread)
6 bar
3 m³/h at 1.5 bar or 4.5 m³/h at 3 bar flow pressure
11 l
105 mm x 65 mm; overflowing water can be led into the building drainage system
via a funnel not directly connected to the overflow (see Fig. 3)
See Fig. 6
38 / 40 kg (gross), 23.5 / 25.5 kg (net)
-0 °C to +40 °C
The RainSystem AF Comfort unit must not be used
to supply rainwater as potable water.
WARNING! Health hazard!
The water supplied by the unit is rainwater, not
potable water. Rainwater is not potable water!
Direct connections between potable water and
rainwater networks are not permissible.
Wilo-RainSystem AF Comfort MC 304 EM
Automatic rainwater utilisation and potable
water replenishment system (Aqua Feed)
Self-priming, horizontal, multistage centrif-
ugal pump of the MultiCargo MC series
Volume flow [m³/h] at optimum efficiency
Number of stages
AC motor 1~230 V, 50 Hz
WILO SE 01/2009
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