External Auto/Stop - Trane CONQUEST CGAX 015 Installation Operation & Maintenance

Electrical Data

External Auto/Stop

If the unit requires external auto/stop function, the
installer must provide leads from the remote contacts on
unit main controller 1A2 – 1A3:
FWD
• 6S1-1: Module 1A2 Terminals block J5 – ID6 for circuit 1
Power supply
Capacities
auto/stop
Cooling capacity on water (1)
• 6S1-2: Module 1A3 Terminals block J4 – ID4 for circuit 2
Heating capacity on water (2)
auto/stop
Fan motor
Fan power input (3)
Chiller will run normally when the contacts are closed.
Current amps (3)
When they open, the compressor(s), if operating, will
Start-up amps
Air flow
cycle off. Unit operation will be inhibited. Closure of
minimum
the contacts will permit the unit to return to normal
nominal
operation. Field-supplied contacts for a low voltage
maximum
connections must be compatible with dry circuit 24 VDC Main coil
Water entering/leaving connections
for a 12 mA resistive load. Refer to the field diagrams
shipped with the unit for further information.
Electric heater (accessory for blower only)
Electric power supply
Heating capacity
Heat Pump Control and Heating /
Hot water coil (accessory for blower only)
Heating capacity (4)
Cooling Selection
G2 filter (filter box accessory)
Quantity
On Heat Pump version units (CXAX), change for Heating/
Dimensions ( LxWxth)
Cooling can be done remotely, from a remote contact
G4 filter (filter box accessory)
Quantity
on unit main controller 1A2, Terminal block J5 – ID7,
Dimensions ( LxWxth)
identified on the wiring diagram as 6S4.
Condensate pump (accessory)
Water flow - lift height
A setpoint, contact closure, or communicated command
Not available for FWD30 and FWD45
can select the unit heat/cool mode to be heat or cool. The
Sound level (L/M/H speed)
contact closure or communicated command allows the
Sound pressure level (5)
user to remotely change the Heat/Cool operating mode.
Sound power level (5)
Unit dimensions
The Setpoint can be changed from the Unit Controller
Width x Depth
Front Panel. By changing this setpoint to 'Heat' the unit
Height
will then switch to heating mode and control the leaving
Shipped unit dimensions
Width x Depth
water temperature to the hot water setpoint. By changing
Height
this setpoint to 'Cool' the unit will switch to the cooling
Weight
mode, and control the leaving water temperature to the
Colour
Recommended fuse size
Chilled water setpoint.
Unit alone (aM/gI)
The operation of the unit is controlled by the Heat/Cool
Unit with electric heater (gI)
command. Switching from cooling to heating will stop
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
all running compressors. After a 10 second delay the
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
4-way reversing valve will be switched into the heating
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
mode direction and the unit will run based on the
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
evaporator leaving water temperature compared to the
Heat exchanger operating limits:
hot water setpoint.
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
As processed by
Chiller Controller
If the ECWS/EWHS input develops an open or short,
the LLID willl report either a very high or very low
value back to the main processor. This will generate
an informational diagnostic and the unit will default to
using the main unit controller chilled water setpoint.
4 32
Technical Data
Switching from heating to cooling will stop all running
compressors. After a 10 second delay the 4-way
reversing valve will be switched into the cooling mode
direction and the unit will run based on the evaporator
leaving water temperature compared to the chilled water
08
setpoint.
(V/Ph/Hz)
When the unit is stopped and there is a command to
(kW) 5,2
switch from cooling to heating or heating to cooling the
(kW) 6,3
10 second delay will been forced when switching the
(type)
(kW) 0,23
4-way reversing valve.
(A) 1,1
(A) 3,2
Auxiliary Setpoint
(m /h) 490
3
(m /h) 820
If the unit requires an external Auxiliary Leaving Water
3
(m /h) 980
3
Temperature Setpoint, the installer must provide leads
from the remote contacts on unit main controller 1A4:
(type)
(Dia) 3/4"
• 6S5: Terminal block J4 – ID1/IDC1
Chiller will operate normally, using the LWT Setpoint,
(V/Ph/Hz) 230/1/50
(kW) 2/4
stablished on the unit controller, whenever the 6S5
contact will be closed, the unit will move to the Auxiliary
(kW) 6,3
LWT Setpoint.
2
(mm) 386x221x8
External Chilled Water Setpoint
-
(ECWS/EHWS) Option
(mm) -
(type)
Unit auxiliary controller (1A4) provides inputs that accept
(l/h - mm)
either 0-20mA or 4-20mA signals to set the external
chilled/hot water setpoint (ECWS/EHWS). Important,
(dB(A)) 36/40/43
this is not a setpoint, this input defines a reset function.
(dB(A)) 46/50/53
This input is primarily used with generic BAS (Building
(mm) 890 x 600
Automation Systems).
(mm) 250
The chilled water setpoint may be changed from a
(mm) 933 x 644
remote location by sending either 0-20mA or 4-20mA
(mm) 260
signal to the the terminal block on 1A4: J9-B1/GND. The
(kg) 32
0-20mA or 4-20mA each corresponds to a reset of 0-20°C
applied on the water setpoint (added on the chilled water
(A) 8/16
setpoint, subtracted on the hot water setpoint.
(A) 16 (2kW),25 (4kW)
Following equation
Current Signal (0-20mA)
Water Setpoint Reset (°C) =
current(mA)
12 20
230/1/50
8,3 15
11,9 18,9
2 x direct drive centrifugal
0,46 0,65
2,2 3,1
5,5 9,3
980 1400
1650 2300
1970 2600
ISO R7 rotating female
3/4" 1 1/2"
230/1/50 or 400/3/50 400/3/50
8 10
12 17,4
2 2
486x271x8 586x321x8
2 2
486x264x48 586x314x48
Centrifugal
24 - 500
38/41/44 46/50/53
48/51/54 56/60/63
1090 x 710 1290 x 820
300 350
1133 x 754 1333 x 864
310 360
46 61
galvanised steel
8/16 8/16
40 (230V),3*16 (400V) 3*20
Current Signal (4-20mA)
(Default setting)
Water Setpoint Reset (°C) =
20*(mA – 4) / 16
30 45
18,8 30,1
20,9 38,2
1,04 1,51
4,7 5,5
14,1 16,5
1800 2700
3000 4500
3600 5400
1 1/2" 1 1/2"
400/3/50 400/3/50
12 12
22,4 34,5
2 2
586*421*8 586*621*8
2 2
586*414*48 586*614*48
47/52/57 47/52/58
57/62/67 57/62/68
1290 x 970 1290 x 1090
450 650
1333 x 1008 1333*1133
460 660
76 118
8/25 8/25
3*25 3*25
UNT-PRC002-GB CG-SVX027D-GB