Riello 20161608, Инструкции по установке и техническому обслуживанию

Страница: 5 / 68

5
GENERAl INfORMAtION
1.3 Unit description
R
NXH it is a range of heat pumps for the production
of hot water for space heating, domestic hot water for domes-
tic use (in combination with suitable boilers or exchangers) and
cold water for cooling.
Designed to be placed outdoors, it is suitable for use in residen-
tial and commercial applications.
The compressor, of the Rotary (NXH 005) or Twin-Rotary (NXH 007-
011-015) type, is regulated by the DC Inverter control with con-
tinuous power modulation. The compressor, working in combi-
nation with the electronic expansion valve, is therefore able to
guarantee maximum environmental comfort while maintaining
high energy standards.
The fans are driven by a permanent magnet synchronous motor
and are continuously modulated to obtain maximum perfor-
mance in all conditions of use, maximizing the silence of the
installation.
The hydronic module is always present and is supplied with a
variable speed circulation pump, flow switch, safety valve and
inlet and outlet water temperature probes.
The unit can be set and controlled by the remote control REC10CH,
the interface WUI, the free potential contacts or, if available, by
an existing modbus bMS.
1.4 Safety and adjustment devices
The safety and regulation of the appliance are obtained:
• on the cooling circuit with
— refrigerant temperature sensor on the compressor dis-
charge
— refrigerant temperature sensor on the compressor suction
• on the hydraulic circuit with
— water temperature sensors the detection of the water inlet
and outlet temperature
— flow switch to ensure unit operation with correct water
flow
— safety valve with intervention pressure 300 kPa
• The installer must necessarily provide in the system:
— a suitably sized expansion vessel
— a suitably sized technical water storage tank
— a by-pass valve between the delivery and return of the
appliance to allow the circulation of water in the unit even
if the same is isolated from the system. This serves to make
the antifreeze protection logics effective.
— a water filter entering the unit
— air vent valves in the highest points of the system
For further details refer to the chapter "Piping connec-
tions"
p. 20
9
Safety device replacement must be carried out by
R
Technical Support Service, using only original components.
Please refer to the spare parts catalogue.
0
IT IS FORbIDDEN to operate the device with faulty safety sys-
tems.
1.5 Identification
The unit can be identified through the technical data plate:
XXXXXXXXXXX
XXX
XXX
XXX
XXX
XXX
XXX
Spain
XXXX
XXXXXXXX XXX XX
XXXXXXXXXXX
technical data plate
Contains the device's technical and performance data.
9
The tampering, removal, or absence of the identification
plates will not allow the product to be properly identified by
its serial number.