20
IOM_WPVBZ HE-WPVZ HE_401-1201-4002_208110_200901_EN
PACKAGED COMPACT VERTICAL
– WATER / AIR
WPVBZ HE / WPVZ HE
INSTALLATION
ELECTRICAL CONNECTIONS
1. Main power supply :
* 091- 251 Single phase (phase +
Neutral)
** 351-1201 Three-phase + Neutral
2. Ground
3. Time delay fuses or Curve D thermal
circuit breaker.
4. Main switch
5. Th TUNE controller
Connection of thermostats
Th-TUNE CONNECTION:
-
Two 230 VAC (L+N) power cables
-
One twisted and shielded pair AWG 20/22 with a
drain wire to GND.
-
If the “Cn” message does not disappear from the
TH-Tune display, it means that communication
between the thermostat and the control board has
failed (possible reasons: wrong connection to the
terminals, the “Rx/Tx+” and the “Rx/Tx-“ cables
have been swapped; the connection has been
made through the wrong connector; etc…).
Proceed to verifying the cable connection and
make sure that they are connected to the right
terminals.
pGD CONNECTION (Option):
- Connection to pGD with 6-wire telephone cable, for
lines longer than 50m intercalate with TCONN (4
wires twisted and shielded, see diagram).
