Connecting The Circulation Pump; Enable Contact Hh; Connecting Circulation Pumps Without Enable Contact - Viessmann PM1 Installation And Service Instructions Manual

Installation sequence
Overview of electrical connections
Floating output for circulation pump with enable
hH
contact
DE1 Circulation pump fault message input
KM-BUS to Vitotronic control unit
aVG
F4 Fuse 4 A (slow), 250 V~

Connecting the circulation pump

Enable contact
hH
Floating output for circulation pump enable
S P Ö
X2
hH hH
A
Fig. 4
Floating contact as N/C contact:
A
P Ö opens when demand present.
—
Floating contact as N/O contact:
B
P S closes when demand present.
—

Connecting circulation pumps without enable contact

Circulation pumps 230 V~
A
aVG aVG
0-10 V
OUT
145
145
B
Fig. 5
Pump module PM1
A
Vitotronic control unit
B
Circulation pump
C
0 - 10 V OUT 0 to 10 V output for control voltage for
speed control
8
(cont.)
S P Ö
X2
B
-
U
+
S Ö P
1 2
hH
-
+
-
+
0-10 V
0 - 10 V OUT 0 to 10 V output for control voltage for
speed control
S1 to S4 Temperature sensors for functions 1 to 7
according to setting in parameter "03"
(see chapter "Setting parameters")
Viessmann NTC 10 k
■ Switching voltage: 24 to 230 V~
■ Switching current: 0.01 to 1 A
Note
Safety and protective equipment of the connected con-
sumer must be switched on.
sL
?
L
PE N
C
Circulation pump power supply
sL
KM-BUS cable between pump module and
aVG
Vitotronic control unit
(blue marking)
Ω