10 | WPL 10 ACS WWW.STIEBEL-ELTRON.COM
INSTALLATION
MOUNTING
9.6 Heat pump manager WPM 3
A WPM3 heat pump manager is required to operate the appliance.
This controls the entire heating system.
9.7 Buffer cylinder
A buffer cylinder is recommended to ensure a trouble-free ap-
pliance operation. The buffer cylinder (SBP) not only provides
hydraulic separation of the volume flow in the heat pump and
heating circuit, but also serves as an energy source for defrost-
ing the evaporator. In this connection, read chapter “Minimum
flow rate”.
!
Damage to the appliance and the environment
The cooling operation will always require the SBP...cool
buffer cylinder plus a diffusion-proof insulation of the
pipework!
9.8 Preparing the electrical installation
WARNING Risk of electrocution!
Carry out all electrical connection and installation work
in accordance with national and regional regulations.
WARNING Risk of electrocution!
Only use a permanent connection to the power supply.
The appliance must be able to be separated from the
power supply by an isolator that disconnects all poles
with at least 3mm contact separation. This requirement
can be met by contactors, isolators, fuses etc.
!
Damage to the appliance and the environment
The specified voltage must match the mains voltage. Ob-
serve the type plate.
!
Damage to the appliance and the environment
Provide separate fuses for the 3 power circuits (for the
appliance, the electric emergency/booster heater and the
control unit).
Always connect “L” for the heat pump and the control unit to
the same phase.
Where required, you can install our starting current limiter with
25 A for the WPL 10 AC (see “Additional accessories”).
Route cables with the following cross-sections in accordance
with the respective fuse rating:
Fuse protec-
tion
Assignment Cable cross-section
C 25 A Heat pump
(single phase)
2.5 mm² for routing above the surface
4.0 mm² for routing through a wall
C 16 A Heat pump
(3-phase)
2.5 mm²
C 35 A
Electric emer-
gency/booster
heater (DHC)
(single phase)
6.0 mm² for routing through a wall
4.0 mm² when routing multi-core cables
on a wall or in an electrical conduit on
a wall
C 16 A
Electric emer-
gency/booster
heater (DHC)
(3-phase)
2.5 mm
1.5 mm² with only two live cores and
routing on a wall or in an electrical con-
duit on a wall.
C 16 A Control 1.5 mm²
The electrical data is given in the “Specification” chapter. You
require a J-Y (St) 2x2x0.8mm² cable as BUS cable.
10. Mounting
10.1 Positioning
When installing the appliance, observe the air intake
direction.
Position the standard unit on the prepared substrate.
26�03�01�1544
Remove the cover.
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