Viessmann EM-P1 Guide rapide
5831394 GB 6/2018 Please keep safe.
Installation and service
instructions
for contractors
VIESMANN
EM-P1 extension
Function extension for connecting a heating circuit pump
Safety instructions
Please follow these safety instructions closely to prevent accidents
and material losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!Please note
This symbol warns against the
risk of material losses and envi-
ronmental pollution.
Note
Details identified by the word "Note"
contain additional information.
Installation, initial start-up, inspection,
maintenance and repairs must only be
carried out by a competent person
(heating engineer/installation contrac-
tor).
Before working on the equipment/heat-
ing system, isolate the power supply
(e.g. by removing a separate mains
fuse or by means of a mains isolator)
and safeguard against unauthorised
reconnection.
When using gas as fuel, also close the
main gas shut-off valve and safeguard
against unauthorised reopening.
Repairing components which fulfil a
safety function can compromise the
safe operation of your heating system.
For replacements, use only original
spare parts supplied or approved by
Viessmann.
2
2.
1.
Overview of electrical connections
?
1?
jF jF [{] [{] [{]
2
[{] fÖ
M
1~ 230 V~/50 Hz
? ?
sÖ
)
[{{]
Wall mounting
5831394
3
Plug 230 V~
P1 Heating circuit pump (on site)
P3 No function
fÖ Power supply
fÖAPower supply for accessories
LV connections
PWM1 No function
TS1 No function
TS2 No function
TS3 )Immersion temperature sen-
sor, low loss header
jF PlusBus
!Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
Prior to commencing any work,
touch earthed objects such as
heating or water pipes to dis-
charge static loads.
Note
Apply strain relief to on-site cables.
Seal any unnecessary apertures with
cable grommets (not cut open).
Connecting the immersion temperature sensor
Connect plug ) to slot TS3 (see Over-
view of electrical connections).
Connecting the heating circuit pump
Heating circuit pump 230 V~
B
A
1~
M
AHeating circuit pump
BPlug sÖ to EM-P1 extension
Specification
Rated current 1 A
Recommended
connecting cable
H05VV-F3G
0.75 mm2
or
H05RN-F3G
0.75 mm2
Overview of electrical connections (cont.)
5831394
4
Heating circuit pump with power consumption greater than 1 A or high effi-
ciency circulation pumps with high starting currents
Pumps with switching input
LN
External
ON/OFF
LN
N PE
NL
L
D
C
A
B
AHeating circuit pump
BPlug sÖ to EM-P1 extension
CContactor
DSeparate power supply (observe
manufacturer's instructions)
Specification for switching the con-
tactor:
Rated voltage 230 V~
Rated current 1 A
Recommended
connecting cable
H05VV-F3G
0.75 mm2
or
H05RN-F3G
0.75 mm2
Connecting the heating circuit pump (cont.)
5831394
5
Pumps without switching input
LN
LN
N PE
NL
L
D
C
A
B
AHeating circuit pump
BPlug sÖ to EM-P1 extension
CContactor
DSeparate power supply (observe
manufacturer's instructions)
Specification for switching the con-
tactor:
Rated voltage 230 V~
Rated current 1 A
Recommended
connecting cable
H05VV-F3G
0.75 mm2
or
H05RN-F3G
0.75 mm2
Connecting the heating circuit pump (cont.)
5831394
6
Heating circuit pump 400 V~
LN L1 L2 L3 N PE
A
C
3~
M
B
AHeating circuit pump
BPlug sÖ to EM-P1 extension
CContactor
Specification for switching the con-
tactor:
Rated voltage 230 V~
Rated current 1 A
Recommended
connecting cable
H05VV-F3G
0.75 mm2
or
H05RN-F3G
0.75 mm2
Connecting the heating circuit pump (cont.)
5831394
7
Rotary switch S1 must be set to 1 (fac-
tory setting).
Connecting the PlusBus to the heat generator control unit
B
74
1 2
A
jF jF [{][{][{]
DI1 DI2 DI3
1234123456
AExtension
BPlusBus to heat generator
Note
If making the connection to the heat
generator with an external plug for the
bus connection, disconnect plug jF
and connect the wires directly.
Heat generator installation and
service instructions
Rotary switch S1
5831394
8
Power supply at the heat generator control unit
L?NL
?
N
156
LN
AExtension
fÖ Power supply
fÖAPower supply for further accesso-
ries
aBH Plug for power supply to accesso-
ries in the heat generator control
unit
Create the power supply connection.
Route the power cable to the heat gen-
erator control unit and connect to plug
aBH.
If power is supplied to a further acces-
sory, use plug fÖA provided
Heat generator installation and
service instructions
Danger
Incorrect core assignment can
result in serious injury and dam-
age to the appliance.
Take care not to interchange
wires "L1" and "N".
Separate power supply
If the power supply for the extension is
not made at the heat generator control
unit.
Danger
Incorrect electrical installations
can lead to serious injury from
electrical current and result in
appliance damage.
Power supply
5831394
9
Connect the power supply and
implement all safety measures
(e.g. RCD circuit) in accordance
with the following regulations:
■ IEC 60364-4-41
■ VDE regulations
■ Technical connection require-
ments (TAB) specified by the
local grid operator
Danger
The absence of system compo-
nent earthing can lead to seri-
ous injury from electric current if
an electrical fault occurs.
The appliance and pipework
must be connected to the equi-
potential bonding of the building.
Isolators for non-earthed conductors
■ The mains isolator (if installed) must
simultaneously isolate all non-
earthed conductors from the mains
with a minimum contact separation of
3 mm.
■ If no mains isolator is installed, all
non-earthed conductors must be iso-
lated from the power supply by the
upstream circuit breaker with a mini-
mum contact separation of 3 mm.
Power supply (cont.)
5831394
10
L1
B
FE
D
D
N
C
A
40
APower supply for extension
BPower supply for heat generator
control unit
CPower supply 1/N/PE, 230 V/50 Hz
DFuse (max. 16 A)
EMains isolator, 2-pole, on site
FJunction box (on site)
Connect the power supply in accord-
ance with the diagram.
If the power supply to the appliance is
connected with a flexible cable, ensure
that the live conductors are pulled taut
before the earth conductor in the event
of strain relief failure. The length of the
earth conductor wire will depend on the
design.
Danger
Incorrect core assignment can
result in serious injury and dam-
age to the appliance.
Never interchange cores "L" and
"N".
!Please note
Incorrect phase sequence can
cause damage to the appliance.
Ensure phase equality with the
power supply of the heat gener-
ator control unit.
Colour coding to IEC 60757
BN Brown
BU Blue
GNYE Green/yellow
Power supply (cont.)
5831394
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1
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