ASSEMBLY AND USER MANUAL
SOLAR BLOCK ULTRA
26
Solar Block
6 ULTRA
12 ULTRA /
PLUS
16 ULTRA /
PLUS
32 ULTRA
Recommended load (kg)
1,9
3,5
4,5
7,0
Depending on the type of the installation, a supplementary refrigerant charge may be required.
If required, the system shall be extra loaded through the liquid line (access valve located after the
expansion valve) very slowly and with the compressor running.
After charging the refrigerant, the high pressure (connection in the liquid tank) must be
equalized with the liquid line (connection after the expansion valve).
7.
ULTRA PLUS SOLAR BLOCK (ACTIVATE DHW BACKUP RESISTANCE)
The ULTRA PLUS Solar Block has a backup immersion electrical resistance of 1500W in the DHW storage
tank.
The electrical resistance could be manually activated in case any problem occurs with the equipment.
To activate the electrical resistance, it is necessary to connect the plug at the back of the equipment to
the socket (230V ~)
The resistance has an integrated thermostat that is regulated to heat the water up to 55°C.
8.
ULTRA SOLAR BLOCK (ACTIVATE DHW CONTROL)
The ULTRA Solar Block is set by default to perform central heating only. To activate the control of the
DHW circuit it is necessary to activate the digital input DI7, terminals 29 and 30 on the control board.
The input is activated with a dry contact or by a s
imple “bridge”.
After activating the digital input, the water temperature probe (B03), terminals 1 and 2 of the control
board, must be installed in the water tank.
The temperature probe for the DHW circuit is supplied with the equipment.
By default, the priority of the equipment is set for the DHW circuit, only then it reverses to the central
heating circuit.
The management of the 3-way valve (reversing for CH or for DHW) is done automatically by the
equipment.
The 3-way valve must be connected to the terminals mentioned in the following table:
Terminal
Conductor
Description
Output
42
Yellow/ green
groud
3 way valve (CH/ DHW)
43
Brown
Permanent Phase
44
black
Permanent Phase
45
blue
Neutral
