To Connect The Electrical Wiring On The Indoor Unit; To Connect The Main Power Supply - Rotex HPSU Bi-Bloc Ultra Series Installer's Reference Manual

6 Connect an earth leakage circuit breaker and fuse to the power
supply line.
7.9.7 To connect the electrical wiring on the
indoor unit
1 Open the switch box so that you can access the back of the
switch box. See "7.2.3 To open the indoor
2 Route the wiring as follows:
▪ Enter the unit from the bottom.
▪ Route the wiring via the back of the switch box.
▪ Fix the cables with cable ties to the cable tie mountings at
the back of the switch box.
b a c
d e
a, b, c Field wiring (see table below)
d Factory-mounted cable for power supply of backup heater
e Factory-mounted cable for power supply of booster heater
INFORMATION
When installing field supply or option cables, foresee
sufficient cable length. This will make it possible to open
the switch box and gain access to other components
during service.
Routing Possible cables (depending on unit type
and installed options)
a ▪ Preferential power supply contact
Low voltage ▪ User interface used as room thermostat
(option)
▪ Power consumption digital inputs (field
supply)
▪ Outdoor
(option)
▪ Indoor
(option)
▪ Electrical meters (field supply)
▪ Safety thermostat (field supply)
RRGA04~08DAV3 + RHBX04+08DA
ROTEX HPSU Bi-Bloc Ultra
4P495262-1B – 2019.10
1×
1×
unit" [ 4 30].
X2M X1M
a b+c
ambient temperature sensor
ambient temperature sensor
Routing Possible cables (depending on unit type
and installed options)
b ▪ Interconnection cable
High voltage power ▪ Normal kWh rate power supply
supply
▪ Preferential kWh rate power supply
c ▪ Heat pump convector (option)
High voltage control ▪ Room thermostat (option)
signal
▪ Shut-off valve (field supply)
▪ Domestic hot water pump (field supply)
▪ Alarm output
▪ Changeover to external heat source
control
▪ Space cool/heat operation control
d ▪ Power supply for backup heater
High voltage power
supply (factory-
mounted cable)
e ▪ Power supply for booster heater
High voltage power
supply (factory-
mounted cable)
CAUTION
Do NOT push or place redundant cable length in the unit.
7.9.8

To connect the main power supply

1 Connect the main power supply.
In case of normal kWh rate power supply
X11YA X11Y
X11YB
1 2 3
X2M
X1M
X1A
1 2 3 1 2 3
1 2 3 1 2 3
a Interconnection cable (=main power supply)
In case of preferential kWh rate power supply
Connect X11Y to X11YB.
7 Installation
Installer reference guide
43