Grundfos ALPHA SOLAR 15-75 130 - Before Startup; Control Signal Connection, ALPHA SOLAR; Electrical Installation, ALPHA SOLAR; First Startup

English (GB)
9
4.3 Electrical installation, ALPHA SOLAR
Fig. 9 Control box connections
4.4 Power supply connection, ALPHA SOLAR
Connect the pump to the power supply with the Superseal power
connector.
Fig. 10 Superseal power connector
4.5 Control signal connection, ALPHA SOLAR
If you do not need the signal connection, cover it with a blanking
plug. See fig. 9.
You can control the pump with a low-voltage PWM (pulse-width
modulation) signal.
The PWM signal is a method for generating an analog signal
using a digital source.
The control signal connection has three conductors: signal input,
signal output and signal reference. See fig. 11. Connect the cable
to the control box with a Mini Superseal plug. The signal cable
can be supplied with the pump as an accessory.
Fig. 11 Mini Superseal plug
5. Starting up the product
5.1 Before startup
Do not start the pump until the system has been filled with liquid
and vented. Make sure that the required minimum inlet pressure
is available at the pump inlet. See section 10. Technical data. For
instructions on how to vent the system, see sections 5.3 Venting
the pump and 5.4 Venting the heating system.
5.2 First startup
After installing the product, see section 3. Installing the product,
turn on the power supply. The light in the control panel shows that
the power supply has been switched on. See fig. 12.
The pump is factory set to AUTO
ADAPT
.
Fig. 12 Starting up the pump
TM06 5819 0216TM06 9076 2617
DANGER
Electric shock
Death or serious personal injury
- Connect the pump to earth.
Connect the pump to an external main switch with
a minimum contact gap of 3 mm in all poles.
DANGER
Electric shock
Death or serious personal injury
- If national legislation requires a Residual Current
Device (RCD) or equivalent in the electrical
installation, or if the pump is connected to an
electric installation where an RCD is used as an
additional protection, this must be type A or better,
due to the nature of the pulsating DC leakage
current. The RCD must be marked with the symbol
shown below;
L
PE
N
TM06 9076 2617
TM05 3058 0912
IN
REF
OUT
0
1
1 x 230 V ± 10 % ∽ 50/60 Hz