Danfoss BW10 020-090 User manual

BW10 020-090
Control
Operation instructions
VMGFU102

2
The cover graphics are solely for illustration and forms no part of any offer for sale or any sale contract. The manufacturer
reserves the right to change the design at any time without notice.
Contents
1  SAFETY CONSIDERATIONS .................................................................................................................................................3
1.1 - General ..............................................................................................................................................................................................................................3
1.2 - Avoid electrocution.......................................................................................................................................................................................................3
2  GENERAL DESCRIPTION......................................................................................................................................................3
2.1 - General ..............................................................................................................................................................................................................................3
2.2 - Abbreviations used.......................................................................................................................................................................................................3
3  HARDWARE DESCRIPTION..................................................................................................................................................3
3.1 - General ..............................................................................................................................................................................................................................3
3.2 - Electrical supply to boards .........................................................................................................................................................................................4
3.3 - Light emitting diodes on boards..............................................................................................................................................................................4
3.4 - The sensors.......................................................................................................................................................................................................................4
3.5 - The controls .....................................................................................................................................................................................................................4
3.6 - Connections at the user terminal block ................................................................................................................................................................4
4. SETTING UP CONTROL SYSTEM4.1  GENERAL FEATURES...............................................................................................6
4.2 - Default screen characteristics ...................................................................................................................................................................................6
4.3 - Password screens...........................................................................................................................................................................................................6
4.4 - Menu screen characteristics ......................................................................................................................................................................................6
4.5 - Data screen or configurable parameter characteristics...................................................................................................................................6
4.6 - Parameter modification...............................................................................................................................................................................................7
4.7 - Operating mode screen...............................................................................................................................................................................................7
4.8 - Menu tree structure ......................................................................................................................................................................................................8
4.9 - Detailed menu description ........................................................................................................................................................................................9
5  CONTROL OPERATION.......................................................................................................................................................16
5.1 - Start/stop control....................................................................................................................................................................................................... .16
5.2 - Heating/cooling/standby operation................................................................................................................................................................... .16
5.3 - Heat exchanger water pump control ................................................................................................................................................................. .17
5.4 - Control interlock contact ........................................................................................................................................................................................ .17
5.5 - Control point ............................................................................................................................................................................................................... .17
5.6 - Capacity control ......................................................................................................................................................................................................... .18
5.7 - Demand limit............................................................................................................................................................................................................... .18
5.8 - Night mode.................................................................................................................................................................................................................. .18
5.9 - Control of a boiler...................................................................................................................................................................................................... .19
5.10 - Master/slave assembly .......................................................................................................................................................................................... .19
5.11 - Heating module (HDC) control........................................................................................................................................................................... .19
6  DIAGNOSTICS  TROUBLESHOOTING ..............................................................................................................................20
6.1 - General .......................................................................................................................................................................................................................... .20
6.2 - Displaying alarms .......................................................................................................................................................................................................20
6.3 - Resetting alarms......................................................................................................................................................................................................... .20
6.4 - Alarm codes ................................................................................................................................................................................................................. .21
6.4 - Alarm codes (cont.) ................................................................................................................................................................................................... .22

3
1  SAFETY CONSIDERATIONS
1.1 - General
Installation, start-up and servicing of equipment can be
hazardous if certain factors particular to the installation are not
considered: operating pressures, presence of electrical
components and voltages and the installation site (elevated
plinths and built-up up structures). Only properly qualied
installation engineers and highly qualied installers and
technicians, fully trained for the product, are authorised to
install and start-up the equipment safely. During all servic-ing
operations all instructions and recommendations which appear
in the installation and service instructions for the product, as
well as on tags and labels xed to the equipment and
components and accompanying parts supplied sepa-rately, must
be read, understood and followed.
• Apply all standard safety codes and practices.
• Wear safety glasses and gloves.
• Use the proper tools to move heavy objects. Move units
carefully and set them down gently.
1.2 - Avoid electrocution
Only personnel qualied in accordance with IEC (Inter-
national Electrotechnical Commission) recommendations may
be permitted access to electrical components. It is particularly
recommended that all sources of electricity to the unit be shut
off before any work is begun. Shut off the main power supply
at the main circuit breaker or isolator.
IMPORTANT: This equipment conforms to all applicable
codes regarding electromagnetic compatibility.
2  GENERAL DESCRIPTION
2.1 - General
The BW10 unit has one refrigerant circuit with one or two
compressors.
The unit has an electronic control system to regulate water-
cooled units with or without hydronic.
The control system has the following controls:
• Compressor start-up to control the water loop
• Fixed or variable-ow pumps to optimise the operation of
the refrigerant circuit
As standard, the control system offers three on/off commands:
• Local - on/off command using the keyboard
• Remote - wired on/off command using volt-free contacts
• Network - Carrier Comfort Network (CCN) on/off
command.
The command type is selected in advance by keyboard.
2.2 - Abbreviations used
The BW10 unit has one refrigerant circuit, called circuit A with
one or two compressors (A1, A2).
The following abbreviations are used frequently:
CCN Carrier Comfort Network
DHW Domestic hot water
HDC Heating device control
LED Light Emitting Diode
LEN Internal communication bus linking the main board
to the slave boards
SCT Saturated condensing temperature
SHC Space heating control
SST Saturated suction temperature
EXV Electronic expansion valve
PD-AUX Auxiliary input/output board
3  HARDWARE DESCRIPTION
3.1 - General
The control system consists of an NRCP2-BASE board and a
user interface.
All boards communicate via an internal LEN bus. The NRCP2-
BASE board continuously manages the information received from
the various pressure and temperature probes. The NRCP2-BASE
master board contains the program that controls the unit.
The user interface includes an alphanumeric seven-line display,
two LEDs with ve navigation keys as well as a contrast
control wheel.

4
Control board
3.2 - Electrical supply to boards
All boards are supplied from a common 24 V a.c. supply
referred to earth.
CAUTION: Maintain the correct polarity of the power supply
connection of the boards, to ensure that they are not
damaged.
In the event of a power supply interrupt, the unit restarts
automatically without the need for an external command.
However, any faults active when the supply is interrupted are
saved and may in certain cases prevent a circuit or unit from
restarting.
3.3 - Light emitting diodes on boards
All boards continuously check and indicate the proper
operation of their electronic circuits. A light emitting diode
(LED) lights on each board when it is operating properly.
• The red LED that ashes for a two-second period - one
second on, one second off - indicates correct operation. A
different rate indicates a board or a software failure.
• The green LED ashes continuously on all boards to show
that the board is communicating correctly over its internal
bus. If the LED is not ashing, this indicates a LEN bus
wiring problem.
• The orange LED of the master board ashes during any
communication via the CCN bus.
3.4 - The sensors
Refrigerant pressure sensors
Two types of electronic (high and low-pressure) sensors are
used to measure the suction and discharge pressure in each
circuit.
Water system pressure sensors
As an option, two electronic sensors are used to measure the
suction and the discharge pressure of the water pump. The
water ow rate is calculated, the unit is protected against water
ow losses and the pump is protected against cavitation (low
pump entering pressure).
Thermistors
The water temperature sensors are installed in the entering and
leaving side. Two optional water temperature sensors can be
used for master/slave assembly control (in the case of leaving
water control).
3.5 - The controls
Water circulation pumps
The controller can regulate each water heat exchanger pump and
takes care of automatic changeover between pumps. Variable-
ow pumps can control the heat exchanger temperature
difference or the water pressure difference.
Boiler
If there is a unit fault in the heating mode this output authorises
start-up and shutdown of a boiler.
Immersion heaters
The outputs of the AUX1 board permit control of the electric
resistance heaters. They are used as a supplementary heating
source in the heating mode.
3.6 - Connections at the user terminal block
3.6.1 - General description
The contacts below are available at the user terminal block on
the NRCP2-BASE boards. Some contacts can only be used if
the unit operates in remote operating type (Remote).
Contrast control
wheel
Back to the previous
screen
On/off key
- Unit stopped
- List of available operating
modes (only in local mode)
Green LED
Unit has stopped
Unit starts up
Unit in operation
Red LED
No alarm
Warning
Circuit or complete unit error
Up/Down key
- Navigation
- Modification
Enter key
- Validation
- Selection access

5
Description Connector/
channel
Terminal Board Remarks
Contact 1: Start/stop J4/CH 8 32-33 NRCP2-BASE Used with the remote operating mode (Remote).
Contact 2: Heating/cooling selection J4/CH 9 63-64 NRCP2-BASE Used with the remote operating mode (Remote).
Contact 3: Demand limit selection 1 J4/CH 10 73-74 NRCP2-BASE
Customer safety loop input J4/CH 11A 34-35 NRCP2-BASE
Setpoint selection J5/CH 13 NRCP2-BASE Used with the remote operating mode (Remote), unit without NRCP2-SLAVE board.
Contact 3 bis: Demand limit selection
2
J5/CH 14 NRCP2-BASE Unit without NRCP2-SLAVE board.
Control, evaporator water pump J2B/CH 18 NRCP2-BASE -
Control, condenser water pump J2B/CH 22 NRCP2-BASE -
Alarm relay output J3/CH 24 30A-31A NRCP2-BASE -
Unit operation relay output J3/CH 25 37-38 NRCP2-BASE This output can be used to use a well pump
CCN network connection J12 NRCP2-BASE RS-485 series connection
- Pin 1: signal +
- Pin 2: ground
- Pin 3: signal -
Triac output for boiler command J2B/CH 20 NRCP2-BASE -
The following table summarises the connections at the user terminal block.
NRCP2-BASE control board Optional PD-AUX board
J2A
J2B
J3
J4
J12
J3
3.6.2 - Volt-free contact on/off/cooling/heating
If the unit works in the remote operating mode (Remote) and
the automatic heating/cooling changeover function is not
selected and if the user conguration allows this (61WG or
30WG and Pro-Dialog interface selection) the operation of the
on/off and the heating/cooling contacts is as follows:
Without multiplexing
Off On cooling On heating
On/off contact Open Closed Closed
Heaing/cooling contact - Open Closed
With multiplexing
Off On cooling On heating On auto
On/off contact Open Closed Closed Open
Heaing/cooling contact Open Open Closed Closed
NOTE: The automatic changeover function (on auto)
selects the cooling or heating mode based on the outside
temperature (unit with outside temperature) - see chapter
5.2).
3.6.3 - Volt-free setpoint selection contact
Cooling Heating
csp 1 csp 2 hsp 1 hsp 2
Setpoint selection contact Open Closed Open Closed
3.6.4 - Volt-free demand limit selection contact
100% Limit 1 Limit 2 Limit 3
Demand limit 1 Open Closed Open Closed
Demand limit 2 Open Open Closed Closed

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4. SETTING UP CONTROL SYSTEM4.1 - General features
The interface includes different screens that are listed below:
• Default screens with direct display of the main parameters,
• Menu screens for navigation,
• Data/conguration screens listing the parameters by type,
• Operating mode selection screen,
• Password entry screen,
• Parameter modication screen.
NOTE: If the interface is not used for a long period, it will go
black. The control is always active, the operating mode
remains unchanged. The interface screen is re-animated,
when the user presses a key. Pressing the key once illumi-
nates the screen, pressing the key a second time leads to a
screen that is related to the context and the key symbol.
4.2 - Default screen characteristics
There are four default screens. Each screen shows:
• The unit status, its screen number,
• Three displayed parameters.
LOCAL OFF 1 On the left the unit status, on the right
the screen number
Entering water temp Description of the first parameter
term_ewt 17.2 °C Abbreviation and value with unit of
measurement of the first parameter
Leaving water temp Description of the second parameter
term_lwt 17.2 °C Abbreviation and value with unit of
measurement of the second parameter
Control point Description of the third parameter
CTRL_PNT 12 °C Abbreviation and value with unit of
measurement of the third parameter
Pressing the Up or Down key changes one default screen to
another default screen. The screen number is updated.
4.3 - Password screens
Enter password Description of the password entry
screen
0_** Password value
(0 = basic access) Description
The password is entered digit by digit. The cursor is shown at
the current digit that ashes. The arrow keys modify the digit
value. The digit modication is validated with the Enter key and
the cursor is moved to the next digit.
Enter password
1_** The first digit is 1, the cursor is
positioned on the second digit
(0 = basic access)
Enter password
11_**
(0 = basic access)
Pressing the Enter key at a digit without value validates the
overall selection of the password. The screen is refreshed by
the menu list, and the items displayed depend on the level of
the activated password.
The entry of an incorrect password keeps the password entry
screen.
Password selection 0 (zero) can simply be made by pressing the
Enter key twice in succession.
4.4 - Menu screen characteristics
\\MAINMENU Current path in the menu structure
GENUNIT PUMPSTAT Selection cursor to the left of the first
column
TEMP RUNTIME
PRESSURE MODES Menu list
SETPOINT LOGOUT
INPUTS
OUTPUTS
General Parameters Menu Description of the menu framed by the
selection cursor
Each menu item denes the access to categorised data. The Up
and Down arrows position the cursor at the current item. The Enter
key activates the display of the selected sub-menu.
The item LOGOUT permits exiting from the menu screen and
protects access by a user password. The “Previous” key permits
exiting from the current screen without deactivating the
password-protected access.
4.5 - Data screen or configurable parameter
characteristics
The data screens display information parameters such as
temperatures or pressures. The conguration screens display unit
control parameters such as the water temperature setpoints.

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\\MAINMENU\TEMP Current path in the menu structure
EWT 12.0°C List of items
LWT 7.0°C Cursor position
OAT 35.0°C
CHWSTEMP -17.8°C
HTWSTEMP -17.8°C
Leaving Water Temperature Description of the item framed by the
selection cursor
The Up and Down arrow keys position the cursor on the
current menu item. The Enter key activates the parameter
modication (if possible). Any non-pertinent modication
attempt is blocked by a refusal screen.
4.6 - Parameter modification
A conguration parameter can be modied by positioning the
cursor and then pressing the Enter key.
\\MAINMENU\SETPOINT Current path in the menu structure
cps1 12.0°C List of items
cps2 12.0°C Cursor position
ice_sp 12.0°C
hps1 50.0°C
hps2 50.0°C
Cooling Setpoint 2 Description of the item framed by the
selection cursor
The following screen allows modication of a parameter.
Modify value Screen description
csp 2
12.0 °C Current value
_ °C Cursor position
Cooling Setpoint 2 Item description
The Up and Down arrow keys permit the selection of the rst
digit. Pressing the Up key successively scrolls up to the
following symbols:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ., -.
The Down key follows the reverse order of the Up key in
scrolling down the digit list above. Each digit is validated with
the Enter key.
The - sign is only accessible for the rst selected character.
Modify value Description of the screen
csp 2
12.0 °C Current value
11.5_ °C New value before validation
Cooling Setpoint 2 Item description
The value is validated with the Enter key. At any time the
return key cancels the current modication.
ATTENTION: If the user exits from the current data screen, the
value is saved. A saving confirmation is displayed. The
Enter key validates the parameter modification(s). The
Return to the Previous Screen key cancels the current
modification(s).
\\MAINMENUSETPOINT Current path in the menu structure
Save changes? Confirmation that the modification is
saved
4.7 - Operating mode screen
The unit is in Local Off mode, pressing the on/off (0/1) key
once activates the display of the operating mode screen.
Select Machine Mode Description of the screen
Local On List of the machine operating modes
Local Schedule Cursor
CCN
Remote
The Up and Down keys position the cursor on the selected
operating mode. Four modes are immediately displayed on the
screen. To access operating modes that are not visible, please
use the Up and Down keys.
When the operating mode has been selected, the new operating
mode can be validated with the Enter key.
Command accepted Operating mode validation screen
When the unit is in an operating mode and the On/off key is
pressed, the unit will stop. A conrmation screen protects the
unit against inadvertent shutdowns.
PRESS ENTER Machine shutdown confirmation
screen
TO CONFIRM STOP

8
GENUNIT
TEMP
PRESSURE
SETPOINT
INPUTS
OUTPUTS
PUMPSTAT
RUNTIME
MODES
ALARMS
CONFIG
LOGOUT
ALARMRST CUR_ALRM
ALMHIST1
GENCONF
PUMPCONF
HCCONFIG
RESETCFG
USERCONF
SCHEDULE
HOLIDAY
BRODCAST
DATETIME
DISPLAY
HOLIDY01S
HOLIDY16S HOLIDY02S
…
OCC1P01S OCC1P02S
GENUNIT
TEMP
PRESSURE
SETPOINT*
INPUTS
OUTPUTS
PUMPSTAT
RUNTIME
MODES
ALARMS*
CONFIG
LOGOUT
ALARMRST CUR_ALRM
ALMHIST1
GENCONF
PUMPCONF
HCCONFIG
RESETCFG
USERCONF
SCHEDULE
HOLIDAY
BRODCAST
DATETIME
CTRL_ID
OCC3P03S
HCCONFIG
HDC_CONF
HOLIDY16S HOLIDY02S HOLIDY01S
…
PUMPSTAT
HDC_STAT
OCC1P01S OCC2P02S
4.8 - Menu tree structure
NAVIGATION
Password = "0"
ACCESS
ALL
USER
DEFAULT
SCREENS PASSWORD
General parameters
Temperatures
Setpoint
Outputs
Pump status
Unit status
Configuration menu
Reset of the alarms
Alarm history
Holidays
Pump configuration
Setpoint reset
Broadcast
Identification control
LIST OF OPERATING
MODES
Schedule 1
Holidays 1
Holidays 16
Heating module status
Heating module configuration
Schedule 3

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4.9 - Detailed menu description
ATTENTION: Depending on the unit characteristics, certain menu items are not used.
4.9.1 - GENUNIT menu
NAME FORMAT UNIT DESCRIPTION
ctrl_typ 0/1/2 - Local = 0. CCN = 1. Remote = 2
STATUS Running/Off/Stopping/
Delay
- Operating status
ALM Normal/Partial/Shutdown - Alarm status
min_left 0-15 min Start-up delay
HEATCOOL Heat/Cool/Standby/Both - Heating/cooling status
LOCAL_HC 0/1/2 - Heating/cooling selection via the main interface
HC_SEL 0/1/2 - Heating/cooling selection via the CCN network
0 = cooling, 1 = heating, 2 = auto
LSP_SEL 0/1/2 - Setpoint selection via the main interface
SP_SEL 0/1/2 - Setpoint selection via the CCN network
0 = Auto 1 = Spt1 2 = Spt2
SP_OCC Yes/No - Occupied setpoint active
CHIL_S_S Enable/Disable - Unit start/stop via the CCN network
CHIL_OCC Yes/No - Unit time schedule via the CCN network
CAP_T nnn % Total unit capacity
CAPA_T nnn % Capacity circuit A
CAPB_T nnn % Capacity circuit B
DEM_LIM nnn % Demand limit value
SP ±nnn.n °C Current setpoint
CTRL_PNT ±nnn.n °C Control point
EMSTOP Enable/Emstop - CCN emergency stop
4.9.2 - TEMP menu
NAME FORMAT UNIT DESCRIPTION
CL_EWT ±nnn.n °C Evaporator entering water temperature
CL_LWT ±nnn.n °C Evaporator leaving water temperature
OAT ±nnn.n °C Outside air temperature
CHWSTEMP ±nnn.n °C Common master/slave temperature, evaporator
HTWSTEMP ±nnn.n °C Common master/slave temperature, condenser
DGT A ±nnn.n °C Discharge gas temperature A
SCT_A ±nnn.n °C Saturated condensing temperature A
SST_A ±nnn.n °C Saturated suction temperature A
SUCT_A ±nnn.n °C Suction gas temperature A
DGT_B ±nnn.n °C Discharge gas temperature B
SCT_B ±nnn.n °C Saturated condensing temperature B
SST_B ±nnn.n °C Saturated suction temperature B
SUCT_B ±nnn.n °C Suction gas temperature B
COND_EWT ±nnn.n °C Condenser entering water temperature
COND_LWT ±nnn.n °C Condenser leaving water temperature
DRY_LWT ±nnn.n °C Drycooler leaving water temperature
4.9.3 - PRESSURE menu
NAME FORMAT UNIT DESCRIPTION
DP_A ±nnn.n kPa Discharge pressure A
SP_A ±nnn.n kPa Suction pressure A
DP_B ±nnn.n kPa Discharge pressure B
SP_B ±nnn.n kPa Suction pressure B
4.9.4 - SETPOINT menu
NAME FORMAT VALUE UNIT DESCRIPTION
csp1 - 29.7 to 20 12.0 °C Cooling setpoint 1
csp2 - 29.7 to 20 12.0 °C Cooling setpoint 2
ice_sp - 29.7 to 20 12.0 °C Ice storage cooling setpoint
hsp1 20 to 50 50.0 °C Heating setpoint 1
hsp2 20 to 50 50.0 °C Heating setpoint 2
hsp3 20 to 55 50.0 °C Heating setpoint 3
hramp_sp 0.1 to 1.1 0.60 ^C Ramp loading
cauto_sp 3.9 to 50 24.0 °C Cooling changeover setpoint
hauto_sp 0 to 46.1 18.0 °C Heating changeover setpoint
lim_sp1 0 to 100 100 % Limit setpoint 1
lim_sp2 0 to 100 100 % Limit setpoint 2
lim_sp3 0 to 100 100 % Limit setpoint 3
cond_sp 0 to 60 38 °C Condensing setpoint, condenser
* 50, if the unit includes a variable-speed fan

10
4.9.5 - INPUTS menu
NAME FORMAT UNIT DESCRIPTION
ONOFF_SW Open/Close - Remote start/stop contact
HC_SW Open/Close - Remote heating/cooling contact
on_ctrl Off, On Cool, On Heat, On Auto - Current control
SETP_SW1 Open/Close - Remote setpoint contact 1
SETP_SW2 Open/Close - Remote setpoint contact 2
LIM_SW1 Open/Close - Remote demand limit contact 1
LIM_SW2 Open/Close - Remote demand limit contact 2
FLOW_SW Open/Close - Water flow rate/customer safety loop contact
DIFF_SW Open/Close - Water flow rate contact 2 (30WG)
4.9.6 - OUTPUTS menu
NAME FORMAT UNIT DESCRIPTION
CP_A1 On/Off - Compressor output A1
CP_A2 On/Off - Compressor output A2
CP_A3 On/Off - Compressor output A3
FAN_A 0-8 - Fan outputs, condenser A
exv_a 0-100 % EXV position circuit A
HD_POS_A 0-100 % Position variable speed controller fan A
RV_A On/Off - Four-way refrigerant valve
LLS_A On/Off - Liquid line solenoid valve A
CP_B1 On/Off - Compressor output B1
CP_B2 On/Off - Compressor output B2
FAN_B 0-8 - Fan outputs, condenser B
exv_b 0-100 % EXV position circuit B
HD_POS_B 0-100 % Position variable fan speed controller B
RV_B On/Off - Four-way refrigerant valve
LLS_B On/Off - Liquid line solenoid valve B
FAN_DRY 0-8 - Drycooler fan outputs
VFAN_DRY 0-100 % Position drycooler variable speed fan
3wv 0-100 % Three-way valve position
EHS_STEP 0-4 - Electric heater stages
ALARM On/Off - Alarm relay
RUNNING On/Off - Unit on relay
4.9.7 - PUMPSTAT menu
NAME FORMAT UNIT DESCRIPTION
CL_PUMP On/Off - Evaporator pump control
CL_WPIN ±nnn.n kPa Evaporator entering water pressure sensor
CL_WPOUT ±nnn.n kPa Evaporator leaving water pressure sensor
CL_WPCAL Yes/No - Evaporator water pressure sensor calibration?.Following a water pressure sensor error, CL_OFFST is
deconfigured (-99 kPa) to inform of the need to calibrate the water loop. This calibration must be made
while there is no water flow in the machine
CL_OFFST ±nnn.n kPa Water pressure sensor calibration value
CL_FILTR nnn.n kPa Evaporator filter pressure drop
CL_WPMIN nnn.n kPa Minimum evaporator water pressure
CL_WFLOW ±nnn.n G/s Evaporator water flow rate
CL_wdtsp nn.n ^C Evaporator temperature difference setpoint
CL_wdpsp nn.n kPa Evaporator pressure difference setpoint
CL_DvPos Nnn % Evaporator pump speed setpoint
CL_drvpwr ±nnn.n kW Evaporator pump power
CL_drvpI ±nnn.n A Evaporator pump current
CL_drvvs xxxxxxxx - Evaporator pump speed variable speed controller version
CL_dvTyp Xxxxxxxx - Evaporator pump variable speed controller type
CD_PUMP On/Off - Control condenser pump
CD_WPIN ±nnn.n kPa Condenser entering water pressure sensor
CD_WPOUT ±nnn.n kPa Condenser leaving water pressure sensor
CD_WPCAL Yes/No - Condenser water pressure sensor calibration? Following a water pressure sensor error, CD_OFFST is
deconfigured (-99 kPa) to inform of the need to calibrate the water loop. This calibration must be made
while there is no water flow in the machine
CD_OFFST ±nnn.n kPa Condenser water pressure sensor calibration value
CD_FILTR nnn.n kPa Condenser filter pressure drop
CD_WPMIN nnn.n kPa Minimum condenser water pressure
CD_WFLOW ±nnn.n g/s Condenser water flow rate
CD_wdtspt nn.n ^C Condenser temperature difference setpoint
CD_wdpspt nn.n kPa Condenser pressure difference setpoint
CD_DvPos Nnn % Condenser pump speed setpoint
CD_drvpwr +nnn.n kW Condenser pump power
CD_drvpl +nnn.n A Condenser pump current
CD_drvvs xxxxxxxx - Condenser pump speed variable speed controller version
CD_dvTyp Xxxxxxxx - Evaporator pump variable speed controller type