Danfoss ThermoControl-3 Mounting Manual page 11

Mounting Guide
Terminal Name
Y1 MKRÜ closed
Y2 MKRÜ open
Y3 (VWW) open
Y4 (VWW) closed
Y5 STM C
Y6 STM NO
Y7 STM NC
Y8 KA C
Y9 KA NO
Y10 KA NC
Y11 L (VHZG)
Y12 to STW
Y13 from STW
Y14 VHZG open
Y15 VHZG closed
Y16
Y17
Y18
Y19
Y20
Y21
Terminal
L
N
PE
Danfoss District Energy
ThermoControl – 3
Terminal assignment of circulation pumps
Description
Excessive extraction protection shut-off
VWW – valve domestic hot water (appl. ThermoClean)
VRU – valve stratification (appl. ThermoDual-FLS)
VSol – valve preheating (appl. MultiHeat)
VZWN – valve heating (appl. Circulation reheating)
Potential-free relay output for fault indication
(C=center contact, NO=normally open contact, NC=normally closed contact)
Potential-free relay output for heat request
(C=center contact, NO=normally open contact, NC=normally closed contact)
Heating control valve with safety function, conductor
Thermostat with safety monitor (STW) or
temperature safety limiter (STB)
Heating control valve
N
Mains power 230V / 50Hz
L
N
to mains switch (wired internally)
L
N
from mains switch (wired internally)
L
Additional connections for pumps, valves and PE
Description
Fused and switched 230V power supply to the pumps
Neutral conductor (pumps and valves)
Protective earth conductor
You will also find the terminal assignment diagram
on the inside of the housing cover
VM.GU.A1.02
11
DEN - SMT / PL