Danfoss District Energy
DSA 1 MINI -
10 DEN-SMT/PL
VM.HE.B2.02
Danfoss District Energy
Electrical instructions
9.0 Electrical installation
When cabling and connecting the DSA 1 MINI the IEC
regulations and the regulations of local power supply
companies must be observed. This work must therefore
only be performed by skilled personnel.
The Danfoss District Energy DSA 1 MINI station is already
wired ready in the factory.
The electrical connection is performed in acc. with the
terminals plan of the installed controller.
Only use PT 1000 version sensors.
The Danfoss District Energy DSA 1 MINI mains connection
shall be performed via the earth leakage circuit breaker
installed in the connection box (1F1 6 A).
If a data transfer system (Danfoss Energy control system
DECS 2.0 or local Building management system) is installed
in the district heating network, a cable connection
(2 × 2 × 0.5 mm² shielded and twisted) must be used.
The
heat meter
connection includes the voltage supply
of 230 V and a data communication bus cable (2 × 0.5 mm²
shielded) from the meter’s bus connection to the Danfoss
District Energy DSA 1 MINI)
Lightning protection:
It is recommended that an transient protection module
with coarse and fine protection is installed, especially in
the supply cable for the DSA 1 MINIs.
If the transient protection module is not available or not in-
stalled, the customer must be informed about the increased
risk of direct and indirect lightning.
5 SAFETY RULES
1. Disconnect L1 and N before work!
2. Secure or monitor against reengagement power!
3. Check there is no voltage present!
4. Protect from adjacent voltage-carrying parts!
5. Follow the general electrical safety rules
