Unitary products group HA 300 User manual

Unitary Products Group
ACCESSORY KIT INSTALLATION INSTRUCTIONS
Low Ambient Accessory
For Air Cooled Split-System Air Conditioners
HA 300, HB 360 / 480 / 600, HF-25, HL-30 / -40 / -50 Models
035-20209-000-A-0904
GENERAL
These split-system condensing units are designed to
operate at ambient temperatures down to 40°F. This
accessory will insure safe operation at ambient temper-
atures down to 0°F. The VLT6000 control monitors the
refrigerant system and will vary the condenser fan
speed based on the discharge pressure. One controller
is required for each fan to be controlled. Therefore, two
accessory kits are required for each unit. This instruc-
tion provides all the necessary information to properly
field-install a low ambient accessory on the condensing
units listed in Table 1. Components that are supplied in
the respective accessory are listed in Table 2, and pic-
tured in Figure 1.
TABLE 1: APPLICATION DATA
ACCESSORY MODEL # VOLTAGE UNIT
2LA04702658 575 HA 300, HF -25
2LA04702858 575 HB 360, HL -30
2LA04702958 575 HB 480, HL -40
2LA04703058 575 HB 600, HL -50
TABLE 2: ACCESSORY COMPONENTS
ITEM QTY. PART NO. DESCRIPTION
1* 1*ea
*. “X” denotes Model number needed for application.
473-24615-00X* VLT6000 Condenser Fan Speed
Control and Enclosure
2 1 ea 025-38680-000 Pressure Transducer
3 1 ea 025-38681-000 Wire Harness Assembly
4 1 ea 025-37466-000 Power wire Harness
5 1 ea 023-20566-000 Tee Connector
6 2 ea 021-15529-000 Screw HEX ¼-14 X.75
7 1 ea 025-10209-000 7/8 Bushing
8 2 ea 025-14284-000 1 3/8 Bushing
9 6 ea 025-09607-000 Wire Tie
10 1 ea 025-37455-000 0º Degree Switch
11†
†. Crankcase Heaters supplied are dependent on accessory
ordered.
2 ea 025-37425-575 30/40 Ton Crankcase Heater
2 ea 025-37474-575 25/50 Ton Crankcase Heater
FIGURE 1 - ACCESSORY COMPONENTS
The 2LA047 series low ambient accessories are
intended for use with the 25-50 Ton Split System con-
densing units only. UPG cannot guarantee proper
operation for any application of this VLT6000 control-
ler for other equipment or applications. Contact your
local branch or distributor for any application related
questions.
Improper installation, adjustment, service or mainte-
nance can cause injury or property damage. There-
fore, only a qualified installer or qualified service
personnel should perform this conversion.
If the unit is connected to power sources, make sure
that all electrical power to the unit has been discon-
nected.

035-20209-000-A-0904
2Unitary Products Group
1. Disconnect all electrical power to the unit.
2. Remove the condensing unit control box access
panel.
3. Install the VLT6000 enclosure with the provided
screws. Mounting holes are pre-punched in the top
rails to locate the enclosure near the condensing
unit control box. See Figure 7.
4. Attach the pressure transducers to the connection
tee (provided in accessory). The pressure trans-
ducer has a ¼ In. SAE female flare with Schrader
valve depressor for mounting to the tee.
See Figure 2.
• Hand thread the transducer to the tee.
• Tighten and secure the connection.
• Remove the Schrader valve cap from the dis-
charge line port (provided).
• Hand thread the tee to the discharge line port.
• Tighten and secure the connection, making sure
the transducer is mounted vertically. See Figure
3.
• Perform a leak test on fittings and connections
before putting the system into operation.
NOTE: This procedure must be repeated for each sys-
tem.
5. Attach wiring harness assembly plug to transducer.
See Figure 4. Route sensor wires back to VLT6000
enclosure.
6. Remove VLT6000 enclosure lid.
7. Pass wires through the bushing (provided), using
knock out located in the bottom of the VLT6000
enclosure.
8. Access the VLT6000 control terminal blocks. See
Figure 6.
9. Remove the terminal access cover. See Figure 5.
Before installing accessory read all of this installation
instruction.
FIGURE 2 - PRESSURE TRANSDUCER
Do not remove the plastic plugs from the transducers
until they are ready to be installed.
INSERT WIRING
HARNESS PLUG
¼ In. SAE FEMALE FITTING
WITH SCHRADER VALVE DEPRESSOR
FIGURE 3 - PRESSURE TRANSDUCER MOUNTING
FIGURE 4 - WIRE HARNESS ASSEMBLY
MOUNT
TRANSDUCER
VERTICALLY
TEE
TO
DISCHARGE
LINE
PORT
MOUNT
TRANSDUCER
VERTICALLY
TO DISCHARGE
LINE PORT
RED WIRE = 10.0 VDC SUPPLY
BLACK WIRE = COMMON
WHITE WIRE = OUTPUT

035-20209-000-A-0904
Unitary Products Group 3
10. Wire transducers to the VLT6000 control.
See Figure 6.
• Route power wires, motor leads, and transducer
signal wires through separate knockouts. See
Figure 6.
• Connect White Wire from Transducer to Terminal
(53) on the VLT6000.
• Connect Black Wire from Transducer to Terminal
(55).
• Connect Red Wire from Transducer to Terminal
(50).
• Connect Bare (shield) Wire from Transducer to
Grounding Terminal.
NOTE: All Wiring must comply with prevailing Local
and National wiring codes and ordinances.
11. Cut two lengths of flexible conduit (Field Supplied)
to connect from the VLT6000 Control to the con-
densing unit control box.
• Conduit #1 should run from the bottom of the
VLT6000 enclosure to the condensing unit con-
trol box, using knock outs provided.
• In conduit #1 insert three # 14 Gage wires
marked on both ends (field supplied).
• Conduit #2 should run from the bottom of the
VLT6000 enclosure to the condensing unit con-
trol box, using knock outs provided.
• In conduit #2 insert shielded power cable sup-
plied in accessory.
• Allow additional conduit length to remove the
VLT Control enclosure from the top rail and place
on side for servicing.
12. Wire condenser fan motor #1 to the VLT6000 con-
trol. See Figure 6, and the SWD in Figure 9. The
VLT6000 must be wired to operate fan motor #1.
Factory installed pressure switches control fan
motor #2.
• Disconnect wire 136/BLK from terminal (T1) on
contactor (M5).
• Disconnect wire 137/BRN from terminal (T2) on
contactor (M5).
FIGURE 5 - VFD66 CONTROL TERMINAL BLOCKS
FIGURE 6 - P399 PRESSURE TRANSDUCER
WIRING
CONTROL
TERMINAL
BLOCK
INPUT
POWER
(MAINS)
TERMINAL
BLOCK
OUTPUT
POWER
(MOTOR)
TERMINAL
BLOCK
FIGURE 7 - FAN MOTOR #1 LOCATION
FAN MOTOR # 1
FAN MOTOR # 2
FAN MOTOR # 3
FAN MOTOR # 4
VLT6000 ENCLOSURE
VLT6000 ENCLOSURE

035-20209-000-A-0904
4Unitary Products Group
• Disconnect wire 138/PR from terminal (T3) on
contactor (M5).
• Extend wire 136/BLK to terminal (96 / U) located
on the VLT6000 control using wires in conduit
#1.
• Extend wire 137/BRN to terminal (97 / V).
• Extend wire 138/PR to terminal (98 / W).
• Connect (BLK) wire of power harness to terminal
(T1) on contactor (M5) and to terminal (91 / L1)
on the VLT6000 control using shielded cable in
conduit #2.
• Connect (RED) wire of power harness to termi-
nal (T2) on contactor (M5) and to terminal (92 /
L2).
• Connect (WHT) wire of power harness to termi-
nal (T3) on contactor (M5) and to terminal (93 /
L3).
• Connect bare wire of power harness to the
grounding terminal on VLT6000 control.
13. The activation pressures are preset at the factory.
See Drive parameters below.
14. Remove existing low ambient switch (LAS) (See
Figure 8), located in the unit control box, and
replace with new 0olow ambient switch (provided).
15. Install additional crankcase heaters on the com-
pressors of the system to which the VLT6000 con-
trol is to be applied. Wire each additional heater
parallel to the existing heater, utilizing the existing
ground.
16. Secure wiring in the unit control box in a neat work-
man like manner using wire ties.
17. Replace terminal access cover on VLT6000 con-
trol.
18. Replace lid on VLT6000 enclosure.
19. Close unit control box by replacing unit access
panel and restore power to the unit.
20. Verify proper unit operation.
A call for cooling closes the (M5) contactor power-
ing the VLT6000 control. As the discharge pres-
sure rises above 210 PSI. during startup, the
VLT6000 control will increase the speed of the con-
denser fan accordingly.
The unit’s scroll compressor produces a rapid rise
in discharge pressure upon startup and this,
depending on the ambient temperature, will result
in full speed operation of the condenser fan. After
the discharge pressure has stabilized, the speed of
the condenser fan may decrease especially during
timeswhentheambienttemperature is below 80°F.
If the discharge pressure has stabilized and an
additional compressor is energized, the speed of
the condenser fan may increase, compensating for
the rise in discharge pressure.
As the discharge pressure begins to fall below the
210 PSI. setpoint, the drive will reduce the speed of
the condenser fan.
As the ambient temperature drops below 40°F the
condenser fan will slow to the minimum speed. The
pressure controlled condenser fan will disengage
when the discharge pressure drops below 180
PSIG as the ambient temperature falls. The system
discharge pressure will increase when the con-
denser fan is disengaged causing the VLT6000
control to increase the condenser fan speed.
21. Contact your local branch or distributor for ques-
tions regarding installation.
NOTE: VLT6000
See Table 3 for the parameter settings in the
drive. For specific instructions on the VLT6000,
refer to the Danfoss manual shipped with the
kit.

035-20209-000-A-0904
Unitary Products Group 5
* Single control board (RB1) applies to 25-Ton unit only.
**Dual control board (RB1 & 2) apply to 30, 40 & 50 Ton units.
FIGURE 8 - LAS-LOW AMBIENT SWITCH WIRING LOCATIONS
1
1
1
2
3
4
5
6
7
8
9
10
FAN OVER
LPS1
HPS1
LPS2
HPS2
HP1
LP1
BLU
BLU
217 / O
281 / BL
216 / O
214 / BL
P 9 S 9 - SYS 1
System # 1
215 / BL
2
3
4
5
6
7
LAS1
284 / BL
283 /
BL
BLK
BLK
P 11S 11 - SYS 1
BOTTOM OF CONTROL BOARD
RB1
LOW AMB.
FS1
FS2
1
1
1
2
3
4
5
6
7
8
9
10
FAN OVER
LPS1
HPS1
LPS2
HPS2
HP2
LP2
GRA
GRA
247 / Y
279 / GY
248 / Y
249 / GY
P 9 S 9 - SYS 2
System # 2
250 / GY
2
3
4
5
6
7
LAS2
286 / BL
285 /
BL
BLK
BLK
P 11S 11 - SYS 2
BOTTOM OF CONTROL BOARD
RB2
LOW AMB.
FS1
FS2

035-20209-000-A-0904
6Unitary Products Group
FIGURE 9 - SIMPLIFIED WIRING DIAGRAM
T1L1
T2L2
T3L3
VLT 6000
INPUT POWER
(MAINS)
TB
CONTROL TERMINALS
136 / BK
137 / BR
138 / PR
M5 - 1
M5 - 3
M5 - 2
P 15 S 15
FM 1
T1
T2
T3
M
GND
1
2
3
4
BLK
BRN
PRP
GRN
Pressure Transducer
System 1
RED
WHT
BLK
T1L1
T2L2
T3L3
VLT 6000
CONTROL TERMINALS
154 / BK
155 / BR
156 / PR
M7 - 1
M7 - 3
M7 - 2
P 17 S 17
FM 3
T1
T2
T3
M
GND
1
2
3
4
BLK
BRN
PRP
GRN
RED
WHT
BLK
Pressure Transducer
System 2
OUTPUT POWER
(MOTOR)
TB
INPUT POWER
(MAINS)
TB
OUTPUT POWER
(MOTOR)
TB
91, (L1)
92, (L2)
93, (L3)
(U), 96
(V), 97
(W), 98
50 53 54 55
50 53 54 55
91, (L1)
92, (L2)
93, (L3)
(U), 96
(V), 97
(W), 98

035-20209-000-A-0904
Unitary Products Group 7
TABLE 3: PARAMETER SETTING
Parameter Condenser Fan
2 Setup #1 Active setup
6 PSI 2 What the readout will show
7 CUSTOM READ [UNITS] Main display will show system pressure
8 Reference (unit) Top Left Display (drive reference: open loop = Hz; closed loop = in WG)
9 Frequency [%] Top Middle Display (closed loop = actual pressure)
10 Motor Current (A) Top Right Display (motor current in Amps)
100 Closed Loop Feedback from transducer controls speed
101 AEO Function Motor torque curve
102 1.1 Motor Power (1.1 kw = 1.5hp)
103 575 Motor Voltage
104 60 Motor Frequency
105 2.3 Motor Current
106 1140 Rated Motor Speed
201 20 Hz Minimum Motor Speed Frequency
202 60 Hz Maximum Motor Speed Frequency
204 0 Minimum allowable setpoint, equal to parameter 413 in closed loop
205 500 Maximum allowable setpoint, equal to parameter 414 in closed loop
206 5 seconds Ramp up time
207 10 seconds Ramp down time
209 --- Frequency to operate upon loss of analog input signal
210 External/preset Reference location (external transducer)
211 0 Preset reference 1
212 0 Preset reference 2
213 0 Preset reference 3
214 0 Preset reference 4
216 1 Frequency bypass bandwidth
217 41 Frequency bypass 1 (skip 41 Hz motor speed)
300 No operation Digital input 16
301 No operation Digital input 17
302 Start Jumper terminal 12 or 13 to terminal 18 to start the drive whenever
powered
303 No operation Digital input 19
304 Coast inverse Jumper terminal 12 or 13 to terminal 27 to enable to drive to run
305 No operation Digital input 29
306 No operation Digital input 32
307 No operation Digital input 33
308 Feedback Pressure transmitter 1 is wired to terminal 53
309 0 VDC Transmitter voltage at minimum pressure
310 10 VDC Transmitter voltage at maximum pressure
311 Feedback Pressure transmitter 2 is wired to terminal 54
312 0 VDC Transmitter voltage at minimum pressure
313 10 VDC Transmitter voltage at maximum pressure
314 No operation Assumes terminal 60 is not used
315 0 mA

Subject to change without notice. Printed in U.S.A.
Copyright © by Unitary Products Group 2004. All rights reserved. Supersedes: Nothing 035-20209-000-A-0904
Unitary 5005 Norman
Products York OK
Group Drive 73069
316 20 mA
317 2 seconds Length of time analog input must be gone before the drive reacts
318 No function How the drive reacts on loss of analog input (only works if minimum
voltage is greater than 0)
400 Infinite Automatic Reset function
402 Enable Flying start
403 Off Length of time to run at minimum speed before shutting off (part of
sleep mode)
404 --- Set about 1 Hertz above 201 (part of sleep mode)
405 --- Frequecy to turn back on (part of sleep mode)
406 ---
413 0 psi Pressure value at minimum transducer signal
414 500 psi Pressure value at maximum transducer signal
415 PSI 2 Text string to display on the keypad
417 MAX Feedback function
418 210 psi Desired pressure to maintain
420 Inverse Control response; "inverse" = motor speed will increase when pressure
increases
421 Enable PID antiwindup
422 20 Hz PID Start Frequency
423 2 Proportional gain
424 3 Integral time
425 Off Differential time (leave OFF)
427 0.02 First order filter on feedback signal
TABLE 3: PARAMETER SETTING (CONTINUED)
Parameter Condenser Fan