STIEBEL ELTRON Heat pumps, Technical Manual

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185 www.stiebel-eltron.CoM
Power supply
Make the power connection in
accordance with the relevant power
connection diagram. the supply
voltage at terminal l and the phase
l´ - switched by the power supply
company - must be routed via the
same rCD. the wPM ii must be able
to be separated from the power
supply by an additional isolator that
disconnects all poles with at least
3 mm contact separation. For this, use
contactors, main isolators, fuses, etc.
isolate all poles of the heating system
supply prior to carrying out any
installation work. the cable entries
in the wall mounting enclosure are
suitable for rigid and flexible cables
with an outside diameter between
6 mm and 12 mm. secure all cables
to the wall immediately below the
wall mounting enclosure using correct
strain relief fittings. the red wedges
supplied are designed to secure the
cables/leads inside the enclosure.
BUS connection
the bUs cable enables the
communication with the appliance
and enables the allocation of
appliance-specific addresses for
controlling the heat pump. only
connect the bUs cable during
commissioning.
bUs cable: J-Y (st) 2 x 2 x 0.8 mm
Outside temperature sensor AFS 2
install the outside temperature sensor
on a north or north-eastern wall
behind a heated room 2.5 m above
ground level and 1 m away from
windows and doors. the outside
sensor should be freely exposed to the
elements, but never to direct sunlight.
Immersion sensor TF 6A
insert the immersion sensor (diameter
6 mm) into the appropriate sensor
well of the respective cylinder. where
no buffer cylinder is installed, fit the
immersion sensor into the heat pump
return.
Contact sensor AVF 6
thoroughly clean the pipe before the
installation. Apply heat conducting
paste and secure the sensor with a tie.
required temperature sensors
o
ut
side t
emper
at
ur
e sen
sor
He
at pump flow t
emper
at
ur
e
He
at pump r
et
ur
n sen
sor
DH
w
temper
at
ur
e
He
at sour
ce 2
He
at sour
ce t
emper
at
ur
e
M
ix
er
flow t
emper
at
ur
e
Cooling flow t
emper
at
ur
e
wPF/w M mono-mode x x x
wPF/w M mono-energetic x x x x
wPF/w M dual-mode with boiler x x x x x
wPl mono-mode x x
wPl mono-energetic with electr. heater rod x x
wPl dual-mode with boiler x x x x
Additional sensor for
DHw heating with the heat pump x x
Additional controlled heating circuit x
Cooling mode x
the outside temperature sensor, one immersion sensor and one contact sensor are part of
the standard delivery of the wPM ii.
X1 Mains voltage area
1 n
2 l
3 l' enable signal
4 Pumps l
5-6 buffer cylinder primary pumps
7 source pump
8-9 Heating circuit pumps
10 DHw primary pump
11 DHw circulation pump
12-13 Heat source 2
14 Mixer open
15 Mixer close
16 solar circuit pump
Terminal array WPMW II
X2 LV area
1 outside temperature sensor
2 sensor HP flow temperature
3 sensor HP return temperature
4 DHw temperature sensor
5 sensor heat source 2
6 Heat source temperature sensor
7 Mixer flow temperature sensor
9 terminal 1 of the Fe 7 remote control
10 terminal 3 of the Fe 7 remote control
11-13 bUs high, low and ground
14 "+" (not connected)
15 sensor, solar cylinder
return heat metering
16 sensor, solar collector, cooling
flow heat metering
X3 earth
X4 n
X5 Pe
HEat pUmp managEr