Solar Input: If the General Purpose Contact, configured to
“Solar Input”, is closed then the unit is not allowed to run in
Heating or DHW Mode because hot water is produced from
a solar source.
-- DHW Request Switch from tank : When this input
is closed, the Domestic Hot Water production is
requested (need DHW sensor delivered in accessory).
-- DHW Priority : When this input is closed, the unit
is switching to Domestic Hot Water production
regardless of the Space Heating demand and the
current DHW schedule (need DHW sensor delivered in
accessory).
-- Anti-Legionella Cycle Request : When this input
is closed, the Domestic Hot Water production is
requested with the Anti-Legionella setpoint.
-- Summer Switch : This switch is used to select the
Winter (contact opened) or the Summer Mode
(contact closed).
-- Energy Meter Input : This input is used to count the
number of pulses received from an external energy
meter (not supplied)
-- External Alarm Indication Input : When this input is
opened, alarm is tripped. This alarm is for information
only, it does not affect the unit operation.
■■ Output remote contact available
2 Output contacts could be chosen on the NHC board, upon
configuration for the following purposes:
alert, alarm , Standby, running (Cool), IAT Reached.
Operating limits
Evaporator Water Temperature
°C
Minimum
Maximum
Entering water temperature at start-up
6
30
Leaving water temperature during operation
5(1)
18
Minimum
Maximum
-10(2)
46
Condenser Air Temperature
°C
Standard unit
(1)
(2)
(1)
Minimum leaving water temperature of 7°C and minimum entering water temperature of 7.5°C for air temperature of -10°C to 0°C for 30RBV 17-21
For operation at an outdoor ambient temperature below 0°C (cooling mode and heating mode), the water freeze protection should be available and / or the water loop can be protected
against frost by the installer, using an anti-freeze solution.
Operating range 30RQV 17-21 units
Outside air temperature (°C)
COOLING
■■ ModBus
-- Direct access with Modbus connection to set,
configure and
-- monitor the 30 RBV/RQV
■■ Input remote contact :
-- Remote On/Off Contact
-- Remote Heat/Cool Contact: This switch is use d 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.
-- Safety Input Contact: This switch is normally closed
type, according to configuration it is used either to
stop the unit, to ban the Heating Mode or to ban the
Cooling Mode when contact is opened.
■■ Large choice of Input Contacts
Several functions can be configured by the installer. They
allow to adapt to the environment of the machine:
-- Power Limitation / Night Mode: This switch is used to
reduce the compressor maximum frequency to avoid
noise.
-- Off Peak: If the General Purpose Contact, configured
to “Off Peak”, is closed then the Electric Heat Stages
are not allowed.
-- Loadshed Request: If the General Purpose Contact,
configured to “Loadshed Request”, is closed then unit
shall be stopped as soon as possible.
64
55
45
35
25
15
5
-5
-15
0
5
10
15
leaving water temperature (°C)
20
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7