AIR-TO-WATER HEAT PUMPS 30RQV 017-021
Environmental care
Superior reliability
■■ Non ozone depleting R410A refrigerant
-- Chlorine-free refrigerant of the HFC group with zero
ozone depletion potential
-- Very efficient - gives an increased energy efficiency
ratio (EER)
■■ Leak-tight refrigerant circuit
-- Brazed refrigerant connections for increased
leaktightness
-- Verification of pressure transducers and temperature
sensors without transferring refrigerant charge
■■ State-of-the-art concept
-- Cooperation with specialist laboratories and use of
limit simulation tools (finite element calculations) for
the design of the critical components, e.g. motor
supports, suction/discharge piping etc.
■■ Auto-adaptive control
-- Control algorithm prevents excessive compressor
cycling and permits reduction of the water quantity in
the hydronic circuit (Carrier patent)
■■ Exceptional endurance tests
-- Corrosion resistance tests in salt mist in the laboratory
-- Accelerated ageing test on components that are
submitted to continuous operation: compressor
piping, fan supports
-- Transport simulation test in the laboratory on a
vibrating table.
Controls
■■ Choice of control product
-- 3 options are available to drive the 30RQV 17-21:
• Dry contact
• User interface WUI
• ModBus protocol
HEATING
User Interface WUI
■■ Ease-of-use
-- NHC control can be associated with a new User
interface (WUI) which allow an easy access to the
configuration parameters (frequency compressor,
refrigerant circuit temperature, sets points, air temp,
entering water temp, alarm report…)
Occupancy
Schedule
Mode
Down
Up
-- This user interface is also very intuitive in its use. It
allows reading and easy selection of the operating
mode. The functions are represented by icons on the
LCD backlit screen.
-- To facilitate the use of this interface, 3 levels of access
are available: end user, installer and factory.
■■ Key features
-- Heating and cooling mode
-- Domestic hot water
-- Master/slave control of 4 units operating in parallel
with operating time equalisation and automatic
changeover in case of a unit fault (need Master slave
sensor in accessory).
-- Scheduling period
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
-- This interface can be installed up to 50 m away. It is
connected to the NHC board with a 4 wires cable.
-- 2 installation possibilities:
• Inside the room (with remote interface accessory) :
IAT sensor is an accessory, it is not mandatory to
operate in remote user interface, because WUI has
an internal sensor to measure the room temperature
take with the internal sensor, setpoint selected is air
temperature.
• On the HP/chiller (with local user interface option):
setpoint is on water temperature are water
temperature
AIR TREATMENT
NHC control associate with compressor and fan variable
frequency driver combines intelligence with operating
simplicity. The control constantly monitors all machine
parameters and precisely manages the operation of
compressor, expansion devices, fans and of the water heat
exchanger water pump for optimum energy efficiency.
■■ ModBus
Direct acces with Modbus connection to set, configure and
monitor the 30RQV
■■ Input remote contact :
-- Remote On/Off Contact
-- Remote Heat/Cool Contact: This switch is used to
select the Cooling Mode (contact opened) or the
Heating Mode (contact closed).
-- Remote Economic Contact: This switch is used to
select the regular Home Mode when contact is opened
or the Economic Away Mode when contact is closed.
427
CONTROLS
NHC Control