Primary Circulation Pump Diagram (Pc0); System Solutions - Bosch Compress 3400i AWS Installation Manual

CS3400iAWS 10 E
Minimum flow (during defrosting)
Minimum/maximum water operating temperature
5)
(cooling /heating mode)
Pump type
General Information
Installation altitude
IP rating
Dimensions (width x depth x height)
Weight
1) 400V 3N ~ AC 50 Hz. The outdoor unit must have a separate power supply.
2) For 230V ~1N AC 50 Hz. The outdoor unit must have a separate power supply.
3) Fuse characteristic gL/C.
4) If the minimum flow rate in the system cannot be ensured, a buffer cylinder is essential.
5) If cooling is available.
6) The benchmark for the most efficient circulators is EEI ≤ 0,20.
Table 10 Indoor unit with integrated electric booster heater
11.2

Primary circulation pump diagram (PC0)

Primary circulation pump diagram (PC0) for the heating system
CS3400iAWS 10 E.
H [m]
8
7
6
5
4
3
2
1
0
0.0 0.5 1.0 1.5
Fig. 27 Capacity curve of the primary circulation pump (PC0)
Heat distribution Type of valves in
system
UF heating/ Fan coils No auto control valves
or on/off valves with
open circuits
On/off valves with no
open circuits
No open circuits and
differential pressure
Compress 3400i AWS – 6721852066 (2023/01)
Unit
4)
l/min
°C
mm
kg
Q [m³/h]
2.0 2.5 3.0
0010039797-001
Outdoor unit
system
CS3400iAWS 4 OR-S
CS3400iAWS 4 CS3400iAWS 6
OR-S OR-S
Grundfos UPM2K 25-75 PWM (EEI≤0,23)
up to 2000m above sea level
485 x 398 x 700
11.3

System solutions

The outdoor unit and the indoor unit may only be installed according to
the manufacturer's official system solutions.
Deviating system solutions are impermissible. Warranty may be voided
in the case of damage and problems resulting from impermissible
installation.
The indoor unit is prepared to work without bypass/buffer, if the volume
and minimum flow declared in chapter 4.2 are permanently met and if
the pressure drop in the circuit is below the pressure available from the
primary circulation pump (PC0) as stated in table 10.
If the appliance is directly connected to the heating circuit (without
bypass or buffer tank) and consequently no heating circulation pump
(PC1) is installed, the primary circulation pump (PC0) must be set to
continuous operation mode. Use the control unit to select: Service menu
> Heat pump > Pumps > Prim. heating pump mode > On.
Some system configurations require accessories (buffer cylinder, 3-way
valve, mixing valve, DHW circulation pump). If a heating circulation pump
(PC1) is installed, this is controlled by the controller in the indoor unit.
The following table shows different system solutions:
Open system size (l)
<13
13<35
>35
-
-
Technical information
CS3400iAWS 8 CS3400iAWS 10
OR-S
15
7/80
6)
IPX1
41
Electric booster System solution
heater On/Off
-
Electric booster heater Direct system
on
Electric booster heater
off
- Direct system
-
- Serial buffer
OR-S
1)
Buffer
2)
or
bypass
1)
Buffer
2)
or
bypass
1)
Buffer
1)
27