Spheros Thermo E 320 - Circulating Pump

3 Description of assemblies and components Thermo E 200 / 320
306
3.4 Circulating pump
The externally arranged circulating pump ensures coolant
transport within the vehicle and/or heater circulation
system.
Depending on the application, the circulating pump is
switched on via the control unit or directly via the vehicle
electrical system and operated during the entire heater
operation duration.
Heaters can be operated with Aquavent 5000 (U4814),
Aquavent 5000S (U4854), Aquavent 6000C (U4855) or
Aquavent 6000SC (U4856) circulating pumps.
ATTENTION
The circuit breaker of the circulating pump may never be
pulled, while the pump is running, and may not be
replaced, when the pump is switched on.
3.4.1 Aquavent 5000 (U4814) and Aquavent
5000S (U4854) circulating pumps
The Aquavent 5000 (U4814) and 5000S (U4854) circu-
lating pumps are equipped with a brush motor.
NOTE
Aquavent 5000 (U4814) with floating-ring type shaft
seal
Aquavent 5000S (U4854) with magnetic drive (no seal)
ATTENTION
The circulating pump motor is not equipped with an
internal inverse-polarity protection.
Circulating pump Flow rate Nominal voltage Operating voltage range Nominal power consumption Weight
l/h V = V = W kg
U 4814
Aquavent
5000
5000
(against 0.2 bar)
24 20…28 104 2.1
U 4854
Aquavent
5000S
5000
(against 0.2 bar) 24 20…28 104 2.2
U 4855
Aquavent
6000C
6000
(against 0.4 bar) 24 20…28 210 2.4
U 4856
Aquavent
6000SC
6000
(against 0.4 bar)
24 20…28 210 2.5
(U4814)
(U4854)
(U4855)
(U4856)
Aquavent 5000
Aquavent 5000S
Aquavent 6000C
Aquavent 6000SC