Carrier Air Conditioner 30RB060 390 User Manual

30RB060-390  
Minimum Load Control Accessory  
Installation Instructions  
Part No: 00EFN900000100A  
SAFETY CONSIDERATIONS  
INSTALLATION  
Installing, starting up, and servicing air-conditioning equip-  
ment can be hazardous due to system pressures, electrical com-  
ponents and equipment location.  
Examine the package contents for correct part numbers. If  
any of the components are damaged, file a claim with the  
shipping company and notify a Carrier representative.  
Only trained, qualified installers and service technicians  
should install, start up, and service this equipment.  
See Table 2 for package contents. See Fig. 1 for dimensional  
drawings of tubes included in the kit.  
When working on air-conditioning equipment, observe  
precautions in the literature, on tags, stickers, and labels  
attached to the equipment.  
Follow all safety codes. Wear safety glasses and work  
gloves. Use care in handling equipment.  
The following material is field supplied:  
1/2 in. OD copper tubing  
• standard 1/2 in. copper tube elbows and couplings as required  
Install the Solenoid Valve  
WARNING  
WARNING  
Shut off all power to the unit. Lock out and safety-tag all  
disconnects. Remove refrigerant charge from the circuits  
using an approved refrigerant recovery device before  
proceeding with this installation. Follow good piping  
practices. Severe personal injury could result.  
Electrical shock can cause personal injury and death. Shut  
off all power to this equipment during installation. There  
may be more than one disconnect switch. Tag all discon-  
nect locations to alert others not to restore power until work  
is completed.  
1. Shut off power to the unit.  
GENERAL  
2. Remove refrigerant charge from the unit.  
3. Locate the factory-supplied stub on the discharge line for  
IMPORTANT: This accessory can only be used on units  
configured for Cooler Fluid Type (Configuration  
SERVFLUD = 1 [Water]). The minimum load control  
accessory (HGBP) is not allowed on units configured for  
Cooler Fluid Type (Configuration SERVFLUD = 2  
[Brine]).  
1
each circuit. Locate the /2 in. NPT pipe plugs at the  
blank end of the cooler for 30RB110 circuit B and  
for both circuits A and B on 30RB060-300 units. See  
Fig. 2.  
4. Remove the 1/2 in. NPT pipe plugs from the blank end  
of the cooler. Use an appropriate thread sealing  
compound and install one 1 in. — 14 O-ring seal  
adapter for each circuit. Lightly lubricate each O-ring  
This control accessory reduces 30RB chiller capacities be-  
low the standard lowest capacity step. This capacity reduction  
provides more precise control of leaving fluid temperature  
during light load conditions.  
The solenoid valve limits the amount of gas that can be  
bypassed from the condenser without impacting oil return.  
5
and attach a /8 in. O-ring seal tube assembly to each  
adapter. This nut should be torqued to 30 ft-lb (40 N-  
m). For 30RB110 circuit A size only, use a tubing cut-  
ter to cut off the end of the stub tube. See Fig. 3.  
5. Assemble the hot gas bypass line in the following order:  
One accessory package is required for 30RB060-190 units  
and for each module of duplex units 30RB315-390. Two  
accessory packages are required for 30RB210-300 units to  
accommodate connections for all three refrigerant circuits. See  
Table 1 for modular unit combinations.  
a. Remove the discharge stub tube and braze the cor-  
rect beaded tube in place.  
b. Braze the ball valve to the beaded tube.  
c. Braze the solenoid valve into the line.  
d. Using field-supplied tubing, connect the solenoid  
valve to the low side connection, either the cooler  
or the liquid line.  
Table 1 — Modular Unit Combinations  
UNIT SIZE  
30RBA315  
30RBA330  
30RBA345  
30RBA360  
30RBA390  
MODULE A  
30RBA160  
30RBA170  
30RBA170  
30RBA190  
30RBA190  
MODULE B  
30RBA160  
30RBA160  
30RBA170  
30RBA170  
30RBA190  
e. Clamp the 5/8-in. tube to the rail. See Fig. 4 and 5.  
1
Use field-supplied /2 in. OD copper tubing and fit-  
tings (as required) to plumb from the solenoid valve  
outlet to either the adapter tube in the cooler or stub  
tube in the liquid line depending on unit size. Tube  
support brackets and 1/2 in. tubing clamps are provided  
with the kit. Install brackets to the bottom of the coil  
bases to support tubing.  
NOTE: An “A” in the model number indicates the design series.  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Catalog No. 04-53300047-01 Printed in U.S.A. Form 30RB-16SI Pg 1 3-10 Replaces: 30RB-4SI  
 
.
IMPORTANT: The valve is direction specific and must  
have the arrow pointing toward the cooler. The solenoid  
valve will not properly seat if installed backwards.  
6. Dehydrate and recharge each circuit.  
7. Restore power to the unit.  
NOTE: When piping is completed, leak test the assembly.  
Then evacuate, dehydrate, and recharge the circuit using  
approved refrigeration practices. Be sure to use the correct  
type and amount of refrigerant listed in the nameplate data  
and base unit documentation.  
Install Control Wiring (See Fig. 6 and 7)  
1. One control wire harness is supplied per circuit.  
Secure the DIN connector end on the solenoid valve  
coil with the screw in the connector. Verify the square  
rubber gasket is in place to ensure connection remains  
watertight.  
DISCHARGE STUB  
2. Route the other end of the cable to the main control panel  
(where the display is located). For the circuit A solenoid,  
connect leads to TB5-7 and TB5-13. For the B circuit  
solenoid, connect leads to TB5-8 and TB5-13. For the  
C circuit solenoid (30RB210-300 only), connect the leads  
to TB5-6 and TB5-13. In all cases the black wire from the  
solenoid must be connected to TB5-13 to ensure correct  
polarity. Incorrect polarity will damage the control  
boards.  
Fig. 2 — Typical Stub Tube View  
COOLER STUB  
3. For 30RB250-300 units only, locate fan board 3 (FB3) in  
the C circuit power control panel. Route the C circuit  
solenoid cable to the panel. Locate the orange and brown  
wires from channel 7 of connector J3 on this board.  
Connect the red wire from the solenoid to the orange wire  
from the board. Connect the black wire from the solenoid  
to the brown wire from the board.  
Configure Unit for Minimum Load Control —  
The control must be configured for the minimum load control  
operation. Use the scrolling marquee display to configure the  
system.  
Fig. 3 — Stub Tube for Circuit A of Size 110  
IMPORTANT: This accessory can only be used on units  
configured for Cooler Fluid Type (Configuration  
SERVFLUD = 1 [Water]). The minimum load control  
accessory (HGBP) is not allowed on units configured for  
Cooler Fluid Type (Configuration SERVFLUD = 2  
[Brine]).  
BALL VALVE  
1. Set the Enable/Off/Remote switch to OFF position.  
2. Press  
until the screen is blank and use the  
ESCAPE  
arrow key to select the Configuration mode LED (light  
emitting diode).  
3. Press  
, then use arrow key to select the  
ENTER  
sub-mode ‘UNIT’, then press Enter key.  
4. Press the down arrow key until ‘HGBP’ is displayed.  
5. Press  
key twice. The word ‘PASS’ and  
ENTER  
‘WORD’ will flash.  
6. Press 0 1 1 1 then  
key so that ‘0’ flashes.  
ENTER  
7. Use arrow keys to change value to one of the following  
configurations:  
CONFIGURATION  
1
DESCRIPTION  
Used during chiller start-up only  
Used during start-up and for close  
control of leaving fluid temperature  
Used during start-up, for close control  
of the leaving fluid temperature and for  
high ambient unloading  
Fig. 4 — Typical View of 5/8 in. Swage Tube,  
5/8 in. Clamp and Solenoid Valve Installed  
2
3
3
 
8. Press the  
9. Press the  
key.  
the Service Test mode to verify proper operation of the  
solenoid(s) (illuminate the Service Test LED, enter the TEST  
mode, enable the test request, ‘T.REQ’ and test outputs  
‘HGB.A,’ ‘HGB.B’ and for 30RB210-300 only, ‘HGB.C.’  
ENTER  
ESCAPE  
key until ‘DISP’ is displayed. Wait  
10 seconds and cycle the control power using the On/Off  
switch.  
Once the outputs have been tested, the installation is complete.  
Return the Enable/Off/Remote contact switch to the desired  
position.  
The chiller is now configured for minimum load valve control.  
Test Minimum Load Relay Output — Use the Scroll-  
ing Marquee display, the instructions given in the Controls,  
Start-Up, Operation Service and Troubleshooting manual and  
SOLENOID VALVE  
5/8 IN.  
TUBING CLAMP  
(TYPICAL)  
SOLENOID VALVE  
BALL VALVE  
FIELD-  
SUPPLIED  
TUBING  
BALL VALVE  
CIRCUIT B  
00PPN500000600A  
TUBE ASSEMBLY  
5/8 IN.  
TUBING CLAMP  
(TYPICAL)  
CIRCUIT A  
30RB060-100  
TUBE SUPPORT BRACKET  
SOLENOID VALVE  
BALL VALVE  
SOLENOID VALVE  
BALL VALVE  
FIELD-SUPPLIED  
TUBING  
1/2 IN. TUBING  
CIRCUIT B  
CLAMP  
(TYPICAL)  
00PPN500000600A  
TUBE ASSEMBLY  
CIRCUIT A  
30RB110  
Fig. 5 — Typical Piping Brackets  
4
 
SOLENOID VALVE  
TUBE SUPPORT  
BRACKETS  
BALL VALVE  
FIELD-SUPPLIED  
TUBING  
SOLENOID VALVE  
BALL VALVE  
CIRCUIT B  
00PPN500000600A  
TUBE ASSEMBLY  
CIRCUIT A  
30RB120-190  
SOLENOID VALVE  
TUBE SUPPORT BRACKETS  
1/2 IN.  
TUBING CLAMP (TYPICAL)  
BALL VALVE  
FIELD-SUPPLIED  
TUBING  
1/2 IN. CLAMP (TYPICAL)  
SOLENOID VALVE  
TUBE SUPPORT BRACKETS  
BALL VALVE  
BALL VALVE  
SOLENOID VALVE  
FIELD-SUPPLIED  
TUBING  
FIELD-SUPPLIED  
TUBING  
CIRCUIT A  
5/8 IN.  
TUBING CLAMP  
(TYPICAL)  
00PPN500000600A  
TUBE ASSEMBLY  
CIRCUIT C  
CIRCUIT B  
30RB210-300  
Fig. 5 — Typical Piping Brackets (cont)  
5
 
LEGEND  
MLV — Minimum Load Valve  
TB — Terminal Block  
Fig. 6 — Main Base Board Wiring for  
Circuits A and B, 30RB060-300  
LEGEND  
MLV — Minimum Load Valve  
TB — Terminal Block  
Fig. 7 — Fan Board 3 Wiring for Circuit C, 30RB210-300  
6
 
 
Copyright 2010 Carrier Corporation  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Catalog No. 04-53300047-01  
Printed in U.S.A.  
Form 30RB-16SI  
Pg 8  
3-10  
Replaces: 30RB-4SI  
 

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