17
4.2.5 - Description of the TEMPERATURES menu
This menu displays the unit operating temperatures. All
temperatures are displayed in degrees Celsius. Access to this
menu is read-only.
ITEM FORMAT DESCRIPTION
0 ±nn.n Evaporator entering water temperature
1 ±nn.n Evaporator leaving water temperature
2* ±nn.n Condenser entering water temperature (if used)
3* ±nn.n Condenser leaving water temperature (if used)
4* ±nn.n Reclaim condenser entering water temperature (if used)
5* ±nn.n Reclaim condenser leaving water temperature (if used)
6 ±nn.n Saturated condensing temperature circuit A
7 ±nn.n Saturated suction temperature circuit A
8* ±nn.n Discharge gas temperature circuit A
9* ±nn.n Discharge superheat temperature circuit A
10* ±nn.n Motor temperature A1
11* ±nn.n Motor temperature A2
12* ±nn.n Saturated condensing temperature circuit B
13* ±nn.n Saturated suction temperature circuit B
14* ±nn.n Discharge gas temperature circuit B
15 ±nn.n Superheat temperature circuit B
16 ±nn.n Motor temperature B1
17* ±nn.n Motor temperature B2
18 ±nn.n Outdoor temperature
Key:
n : numerical display
* : This item is displayed in certain unit configurations only.
Item 18 Outdoor temperature
This item displays the outdoor temperature
if an outdoor temperature sensor is
connected to the 0-10 V d.c. analogue input
on the customer terminal block and if that
sensor has been calibrated (by Carrier
Service). If it has not been calibrated, the
value displayed is the value of the incoming
0-10 V d.c. signal.
4.2.6 - Description of the PRESSURE menu
This menu displays the unit operating pressures. All pressures
are relative, and are expressed in kPa. Access to this menu is
read-only.
ITEM FORMAT DESCRIPTION
0 nnnn Discharge pressure circuit A
1 nnnn Suction pressure circuit A
2 ±nnn Oil pressure compressor A1
3* ±nnn Oil pressure compressor A2
4 ±nnn Differential oil pressure compressor A1
5* ±nnn Differential oil pressure compressor A2
6 ±nnn Economizer pressure A1
7* ±nnn Economizer pressure A2
8 nnnn Discharge pressure circuit B
9 nnnn Suction pressure circuit B
10 ±nnn Oil pressure compressor B1
11* ±nnn Oil pressure compressor B2
12 ±nnn Differential oil pressure compressor B1
13* ±nnn Differential oil pressure compressor B2
14 ±nnn Economizer pressure B1
15* ±nnn Economizer pressure B2
Key:
n : numerical display
* : This item is displayed in certain unit configurations only.
NOTE: The setpoint selection contact may in exceptional cases
be configured as active (configuration by Carrier Service) if
the unit operates in CCN mode as part of a master-slave link
(see section 5.18).
Item 13 Control point
This is the setpoint used by the controller to
adjust the temperature of leaving water.
Control point = active setpoint + reset. The
reset is generally positive in cooling mode
and negative in heating mode. See section
4.2.7, calculating the reset.
Item number 13 flashes (in block 1 of the
user interface) when the unit is in CCN
operating type and the control point is
forced by the CCN.
Item 14 Condensing setpoint
This is the setpoint used by the controller to
adjust the condensing or reclaim temperature.
It refers to the normal condensing setpoint
in the following cases:
• The unit is in operating type Local
Operation - Cooling Setpoint 1 (L-C1 or
LC2).
• The unit is in operating type CCN (CCn)
and cooling mode, and is under network
command for normal mode (no reclaim).
• The unit is in operating type Remote
(rEM) and has received a command to
operate in cooling mode and normal
condensing type (no reclaim), from a
remote contact (see section 3.4.6,
description of remote contact).
It refers to the reclaim setpoint in the
following cases:
• The unit is in operating type Local -
Cooling Setpoint 1 (LC1r or LC2r).
• The unit is in operating type CCN (CCn)
and cooling mode, and is under network
command for reclaim mode.
• The unit is in operating type Remote
(rEM) and has received a command to
operate in cooling mode and reclaim
condensing mode, from a remote contact
(see section 3.4.6, description of remote
contact).
The number for item 14 flashes (in block 1
of the user interface) when the unit is in
CCN operating mode and the condensation
value is forced by the CCN.
Item 15-16-18-19 Reserved for use by Carrier Service only
Item 17 Heat reclaim mode indicator, circuits A/B
(see section 5.20)
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