Installing, starting up, and servicing air-conditioning
equipment can be hazardous due to system pressures, electrical
components, and equipment location.
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
•Follow all safety codes.
•Keep quenching cloth and fire extinguisher nearby when
brazing.
•Wear safety glasses and work gloves.
•Use care in handling, rigging, and setting bulky
equipment.
WARNING
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 disconnect locations to alert others not to restore power until work
is completed.
IMPORTANT: This equipment generates, uses, and can
radiate radio frequency energy and if not installed and
used in accordance with these instructions may cause
radio interference. It has been tested and found to comply
with the limits of a Class A computing device pursuant to
International Standard in North America EN 61000-2/3,
which are designed to provide reasonable protection
against such interference when operated in a commercial
environment.
CAUTION
This system uses Puron® refrigerant (R-410A), which has
higher pressures than R-22 and other refrigerants. No other
refrigerant can be used in this system. Failure to use gage
set, hoses, and recovery systems designed to handle Puron
refrigerant (R-410A) may result in equipment damage or
personal injury. If unsure about equipment, consult the
equipment manufacturer.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53300124-01 Printed in U.S.A.Form 30RB-21SIPg 1121812-13Replaces: 30RB-20SI
Page 2
WARNING
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and goggles and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from sys-
tem using both high-pressure and low pressure ports.
c. Traces of vapor should be displaced with nitrogen
and the work area should be well ventilated. Refrigerant in contact with an open flame produces toxic
gases.
d. Cut component connection tubing with tubing cutter
and remove component from unit. Use a pan to catch
any oil that may come out of the lines and as a gage
for how much oil to add to the system.
e. Carefully unsweat remaining tubing stubs when nec-
essary. Oil can ignite when exposed to torch flame.
Failure to follow these procedures may result in personal
injury or death.
CAUTION
DO NOT re-use compressor oil or any oil that has been
exposed to the atmosphere. Dispose of oil per local codes
and regulations. DO NOT leave refrigerant system open to
air any longer than the actual time required to service the
equipment. Seal circuits being serviced and charge with
dry nitrogen to prevent oil contamination when timely
repairs cannot be completed. Failure to follow these procedures may result in damage to equipment.
INTRODUCTION
These instructions cover installation of 30RB060-390 aircooled liquid chillers with electronic controls and units with
factory-installed options (FIOPs). See Fig. 1.
NOTE: The 30RB080-390 air-cooled chillers with Green-
®
speed
technology include high-efficiency variable condenser
fans. See Fig. 1.
NOTE: Unit sizes 315-390 are modular units that are shipped
in separate sections as modules A or B as noted in position 8 of
the unit model nomenclature. Installation directions specific to
these units are noted in these instructions. For modules 315A,
315B, 330A, 330B, 345A, 345B, and 360B, follow all general
instructions as noted for unit sizes 30RB160-170. For modules,
360A, 390A, and 390B follow instructions for 30RB190. See
Table 1 for a listing of unit sizes and modular combinations.
NOTE: The nameplate for modular units contains only the first
two digits in the model number. For example, 315A and 315B
nameplates read 31A and 31B.
NOTE: An “F” in the model number indicates the design series.
INSTALLATION
Storage —
before installation or start-up, be sure to protect the machine
from construction dirt and moisture. Keep protective shipping
covers in place until machine is ready for installation.
If the unit is to be stored for a period of time
Step 1 — Place, Rig and Mount the Unit
NOTE: Inspect the unit upon arrival for damage. If damage is
found, file a claim right away with the shipping company.
PLACING UNIT — When considering location for the unit,
be sure to consult National Electrical Code (NEC, U.S.A.) and
local code requirements. Allow sufficient space for airflow,
wiring, piping, and service. See Fig. 2-20. Be sure surface beneath the unit is level, and is capable of supporting the operating weight of the unit. See Fig. 21 and Tables 2-4B for unit lifting points, mounting and operating weights.
Locate the unit so that the condenser airflow is unrestricted
both above and on the sides of the unit. Airflow and service
clearances are 6 ft (1.8 m) around the unit. Acceptable clearance on the cooler connection side or end opposite the control
box unit can be reduced to 3 ft (1 m) without sacrificing performance as long as the remaining three sides are unrestricted. Acceptable clearance on the side with a control box can be reduced to 4 ft (1.3 m) due to NEC regulations, without sacrificing performance as long as the remaining three sides are
unrestricted. Provide ample room for servicing and removing
cooler. See Fig. 2-20 for required clearances. Local codes for
clearances take precedence over the manufacturer’s recommendations when local codes call for greater clearances.
Modular units (30RB315-390) must be installed with a minimum separation end to end of 4 ft (1.3 m) for airflow and service clearance along with NEC regulations.
If multiple units are installed at the same site, a separation of
10 ft (3 m) between the sides of the machines is required to
maintain proper airflow and minimize the chances of condenser air recirculation.
MOUNTING UNIT — The unit may be mounted on a level
pad directly on the base rails, on rails along the long axis of the
machine, or on vibration isolation springs. For all units, ensure
placement area is strong enough to support unit operating
weight. Mounting holes are provided for securing the unit to
the pad or vibration isolation springs. The base rail can be point
loaded at the mounting points. The base rail is made from steel,
which is formed into what is shown in Fig. 22. See Fig. 2-20
for locations of mounting points. At the mounting points, a Ushaped channel is welded into the base rail to provide a flat
plate for mounting. See Fig. 23 for mounting plate dimensions.
9
The 1
/16 in. (40 mm) dimension shown is to the mounting hole
from the outside edge of the rail.
NOTE: The 1
same dimension as the 1.42 in. (36 mm) flange that is turned
under the base rail in Fig. 22.
Bolt the unit securely to pad or rails. If vibration isolators
(field-supplied) are required for a particular installation, refer to
unit weight distribution in Fig. 21 to aid in the proper selection
of isolators. The 30RB units can be mounted directly on spring
isolators. For each unit or module, the final unit location must
be level so that oil will equalize properly.
RIGGING UNIT — The 30RB060-390 units are designed for
overhead rigging and it is important that this method be
used. Holes are provided in frame base channels, marked for
rigging (see rigging label on unit). It is recommended that
field-supplied shackles be used to facilitate lifting. Secure the
shackles to the base rails at the points noted on the rigging
label. See Table 2 for the number of lifting points for each unit.
Do not use a forklift truck to move the units.
9
/16 in. (40 mm) dimension in Fig. 23 is not the
2
Page 3
Table 2 — Number of Lifting Points
30RBNUMBER OF LIFTING POINTS
060-1104
120-1506
160-3008
315A, 315B, 330A, 330B,
345A, 345B, 360A
360B, 390A, 390B8
6
Use spreader bars to keep cables or chains clear of unit
sides. As further protection plywood sheets may be placed
against sides of unit, behind cables or chains. Run cables or
chains to a central suspension point so that angle from horizontal is not less than 45 degrees. Raise and set unit down carefully. See Fig. 24 and 25 for rigging centers of gravity.
Each module of the 30RB315-390 units must be rigged separately. When placing unit modules for unit sizes 315-390,
make sure modules are placed to permit access to the control
boxes for each module.
For shipping, some domestic units and all export units are
mounted on a wooden skid under entire base of unit. Skid can
be removed before unit is moved to installation site. Lift the
unit from above to remove skid. See Fig. 24 and 25 for rigging
center of gravity. On export units, the top skid can be used as
the spreader bars. If the unit was shipped with a shipping bag,
the bag must be removed to gain access to the rigging holes in
the base rail. On export units with a full crate, the crate sides
must be removed to aid in rigging.
If overhead rigging is not available, the unit can be moved
on rollers or dragged. When unit is moved on rollers, the unit
skid, if equipped, must be removed. To lift the unit, use jacks at
the rigging points. Use a minimum number of rollers to distribute the load such that the rollers are no more than 6 feet (1.8 m)
apart. If the unit is to be dragged, lift the unit as described
above, and place unit on a pad. Apply moving force to the pad,
and not the unit. When in its final location, raise the unit and
remove the pad.
If the unit was shipped with coil protection, it must be
removed before start-up. The shipping bag for export units
must be removed before start-up.
NOTE: If the application includes a remote-mounted cooler
option, follow the instructions included with the accessory for
cooler placement and refrigerant piping.
3
Page 4
Fig. 1 — AquaSnap® Chiller Model Number Designation
LEGEND
*Refer to Table 1 on page 2 for modular unit combinations.
†Sponsored by ASHRAE (American Society of Heating, Refrigerating and AirConditioning Engineers).
NOTE: A “Z” in position 11 indicates a special order machine. Digits following
do not correspond to tables.
CRN— Canadian Registration Number
EMM— Energy Management Module
GFI-CO — Ground Fault Interrupting Convenience Outlet
LON— Local Operating Network
SCCR— Short Circuit Curr ent Rating
VFD— Variable Frequency Device
XL— Across-the-Line Start
- – Integral Cooler, CRN (Canada)
0 – Integral Cooler, Cooler Heater, CRN (Canada)
4 – Integral Cooler, Microchannel (MCHX), CRN (Canada)
5 – Integral Cooler, Cooler Heater, Microchannel (MCHX), CRN (Canada)
G – Integral Cooler, no CRN
H – Integral Cooler, Cooler Heater, no CRN
K – Integral Cooler, Microchannel (MCHX), no CRN
L – Integral Cooler, Cooler Heater, Microchannel (MCHX), no CRN
R – Integral Cooler, Microchannel (MCHX), Heat Recovery, no CRN
S – Integral Cooler, Cooler Heater, Microchannel (MCHX), Heat Recovery,
no CRN
T – Integral Cooler, Microchannel (MCHX), Heat Recovery, CRN (Canada)
V – Integral Cooler, Cooler Heater, Microchannel (MCHX), Heat Recovery,
CRN (Canada)
Hydronics Option†
- – No Pump Installed
0 – Single Pump, 3 HP
1 – Single Pump, 5 HP
2 – Single Pump, 7.5 HP
3 – Single Pump, 10 HP
4 – Single Pump, 15 HP
6 – Dual Pump, 3 HP
7 – Dual Pump, 5 HP
8 – Dual Pump, 7.5 HP, Low Head
9 – Dual Pump, 7.5 HP, High Head
B – Dual Pump, 10 HP
C – Dual Pump, 15 HP
F – Single Pump, 3 HP with VFD
G – Single Pump, 5 HP with VFD
H – Single Pump, 7.5 HP with VFD
J – Single Pump, 10 HP with VFD
K – Single Pump, 15 HP with VFD
M – Dual Pump, 3 HP with VFD
N – Dual Pump, 5 HP with VFD
P – Dual Pump, 7.5 HP, Low Head with VFD
T – Dual Pump, 7.5 HP, High Head with VFD
Q – Dual Pump, 10 HP with VFD
R – Dual Pump, 15 HP with VFD
Z – Special order designation
5 – 208/230-3-60
6 – 460-3-60
SEE NEXT PAGE
FOR REMAINDER
OF MODEL NUMBER
NOMENCLATURE
RB
190
318
4
Page 5
Packaging/Security Options
L – No Packaging
0 – Skid
1 – Skid, Top Crate, Bag
3 – Coil Trim Panels
4 – Skid, Coil Trim Panels
5 – Skid, Top Crate, Bag, Coil Trim Panels
7 – Coil Trim Panels, Upper and Lower Grilles
8 – Skid, Coil Trim Panels, Upper and Lower Grilles
9 – Skid, Top Crate, Bag, Coil Trim Panels, Upper and Lower Grilles
C – Trim Panels, Upper and Lower Grilles, Upper Hail Guards
D –
Skid, Trim Panels, Upper and Lower Grilles, Upper Hail Guards
F – Skid, Top Crate, Bag, Trim Panels, Upper and Lower Grilles,
Upper Hail Guards
H – Skid, Full End Covers
J – Skid, Top Crate, Bag, Full End Covers
K – Full End Covers
Controls/Communication Options
- – None
0 – EMM
1 – Remote Service Port, GFI-CO
2 – EMM, Remote Service Port, GFI-CO
9 – BACnet Translator, Remote Service Port, GFI-CO
B – BACnet Translator, EMM, Remote Service Port, GFI-CO
H – LON Translator
J – LON Translator, EMM
K – LON Translator, Remote Service Port, GFI-CO
L – LON Translator, EMM, Remote Service Port, GFI-CO
Electrical/Low Sound Options
- – Single Point Power Connections, XL, Terminal Block
0 – Single Point Power Connections, XL, Terminal Block, High SCCR
3 – Dua
l Point Power Connections, XL, Terminal Block
4 – Dual Point Power Connections, XL, Terminal Block, High SCCR
7 – Single Point Power Connections, XL, Non-Fused Disconnect
8 – Single Point Power Connections, XL, Non-Fused Disconnect, High SCCR
C – Dual Point Power Connections, XL, Non-Fused Disconnect
D – Dual Point Power Connections, XL, Non-Fused Disconnect, High SCCR
G – Single Point Power Connections, XL, Terminal Block, Cmpr Blankets
H – Single Point Power Connections, XL, Terminal Block, Cmpr Blankets, High SCCR
J – Dual Point Power Connections, XL, Terminal Block, Cmpr Blankets
K – Dual Point Power Connections, XL, Termin
al Block, Cmpr Blankets, High SCCR
L – Single Point Power Connections, XL, Non-Fused Disconnect, Cmpr Blankets
M – Single Point Power Connections, XL, Non-Fused Disconnect, Cmpr Blankets,
High SCCR
N – Dual Point Power Connections, XL, Non-Fused Disconnect, Cmpr Blankets
P – Dual Point Power Connections, XL, Non-Fused Disconnect, Cmpr Blankets,
High SCCR
Q – Single Point Power Connections, XL, Terminal Block, Cmpr Blankets,
Cmpr EnclosuresR – Single Point Power Connections, XL, Terminal Block, Cmpr Blankets,
Cmpr Enclosures, High
SCCR
S – Dual Point Power Connections, XL, Terminal Block, Cmpr Blankets,
Cmpr EnclosuresT – Dual Point Power Connections, XL, Terminal Block, Cmpr Blankets,
Cmpr Enclosures, High SCCR
V – Single Point Power Connections, XL, Non-Fused Disconnect, Cmpr Blankets,
Cmpr EnclosuresW – Single Point Power Connections, XL, Non-Fused Disconnect, Cmpr Blankets,
Cmpr Enclosures, High SCCR
X – Dual Point Power Connections, XL, Non-Fused Disconnect, Cmpr Blankets,
Cmpr EnclosuresW – Dual Point Power Connections, XL, Non-Fus
ed Disconnect, Cmpr Blankets,
Cmpr Enclosures, High SCCR
Refrigeration Circuit Options
- – No Suction Line Insulation
0 – Suction Insulation
1 – Suction Service Valves
2 – Low Ambient Head Pressure Control Operation
3 – Suction Insulation, Suction Service Valves
4 – Suction Insulation, Low Ambient Head Pressure Control Operation
5 – Suction Service Valves, Low Ambient Head Pressure Control Oper
ation
6 – Suction Insulation, Service Valves, Low Ambient Head Pressure
Control Operation
7 – Minimum Load Control
8 – Suction Insulation, Minimum Load Control Operation
9 – Suction Service Valves, Minimum Load Control Operation
B – Low Ambient Operation, Minimum Load Control Operation
C – Suction Insulation, Suction Service Valves, Minimum Load
Control Operation
D – Suction In
sulation, Low Ambient Head Pressure Control Operation,
Minimum Load Control Operation
F – Suction Service Valves, Low Ambient Head Pressure Control Operation,
Minimum Load Control Operation
G – Suction Insulation, Suction Service Valves, Low Ambient Head Pressure
Control, Operation, Minimum Load Control Operation
H – Suction Service Valves, High-Efficiency Variable Condenser Fans
J – Suction Insula
tion, Suction Service Valve, High-Efficiency Variable
Condenser Fans
K – High-Efficiency Variable Condenser Fans
L – Suction Insulation, High-Efficiency Variable Condenser Fans
M – Suction Service Valves, High-Efficiency Variable Condenser Fans,
Minimum Load Control Operation
N – Suction Insulation, Suction Service Valve, High-Efficiency Variable
Condenser Fans, Minimum Load Control Oper
ation
P – High-Efficiency Variable Condenser Fans, Minimum Load Control Operation
Q – Suction Insulation, High-Efficiency Variable Condenser Fans,
Minimum Load Control Operation
F
SEE PREVIOUS PAGE
FOR REMAINDER
OF MODEL NUMBER
NOMENCLATURE
RB190
8
6
Fig. 1 — AquaSnap® Chiller Model Number Designation (cont)
a30-5704
LEGEND
*Refer to Table 1 on page 2 for modular unit combinations.
†Sponsored by ASHRAE (American Society of Heating, Refrigerating and AirConditioning Engineers).
NOTE: A “Z” in position 11 indicates a special order machine. Digits following
do not correspond to tables.
CRN— Canadian Registration Number
EMM— Energy Management Module
GFI-CO — Ground Fault Interrupting Convenience Outlet
LON— Local Operating Network
SCCR— Short Circuit Current Rating
VFD— Variable Frequency Device
XL— Across-the-Line Start
5
Page 6
2281.37
89.82[]
UNIT MOUNTING1575.30
62.02[]
298.45
11.75[]
PS
y
376.01
14.80[]
2236.08
88.03[]
1447.8[57.0]
PIPING ENTRANCE AREA1697.58
66.83[]
281.03
11.06[]
414.47
16.32[]
PD
Z
PS
Z
200.00
7.87[]
40.00
1.57[]
100.00
3.94[]
CG
x
CG
y
246.36
9.70[]
190.00
7.48[]
336.50
13.25[]
804.35
31.67[]
2393.08
94.22[]
PS
x
1714.90
67.52[]
408.89
16.10[]
408.89
16.10[]
PD
x
518.30
20.41[]
PD
y
860.93
33.89[]
2159.89
85.04[]
38.09
1.50[]
2438.40
[96.00]
RIGGING HOLE
38.00
1.50[]
949.14
37.37[]
215.73
8.49[]
WEIGHT
CU/AL
lb/kg
MAX WEIGHT
CU/AL PUMP
lb/kg
WEIGHT
CU/CU
lb/kg
MAX WEIGHT
CU/CU PUMP
lb/kg
WEIGHT
MCHX
lb/kg
MAX WEIGHT
MCHX PUMP
lb/kg
CENTER OF GRAVITYPUMP SUCTION (PS)PUMP DISCHARGE (PD)
CGx
MM [INCH]
CGy
MM [INCH]
X
.25
Y
.25
Z
.25
X
.25
Y
.25
Z
.25
30RB-060
4111
1869
4944
2247
4593
2088
5426
2466
3783
1716
4616
2094
1164
[45.82]
1038
[40.86]
675.6
[26.6]
309.9
[12.2]
353.1
[13.9]
381.0
[15.0]
482.6
[19.0]
188.0
[7.4]
30RB-070
4317
1932
5150
2641
4799
2181
5632
2560
3978
1804
4811
2182
1165
[45.86]
1013
[39.88]
675.6
[26.6]
309.9
[12.2]
353.1
[13.9]
381.0
[15.0]
482.6
[19.0]
188.0
[7.4]
COIL SERVICE AREA
NO PUMP PACKAGE
ENTERING WATER
4" VICTAULIC
(SEE NOTE 4)
COOLER VENT 1/4"
PUMP PACKAGE
LEAVING WATER
4" VICTAULIC
COOLER DRAIN
3/4" NPT
PUMP PACKAGE ENTERING
WATER 4" VICTAULIC
SEE DETAIL
A
CONTROL/POWER BOX
ALL VOLTAGES
AIR FLOW
7/8" KNOCKOUT TO BE
USED FOR LOCATING
FIELD POWER WIRING
BACnet COMMUNICATION
OPTION KNOCKOUT
FOR 1/2" CONDUIT
COOLER TUBE
SERVICE AREA
SERVICE AREA 1219.2[48.0] FROM EACH SIDE OF THE UNIT
CIRCUIT
A
COMPRESSOR
CIRCUIT
B
COMPRESSORS
COIL SERVICE AREA
DETAIL
A
SCALE 1:2
22.2[.87]
MOUNTING HOLE
NOTES:
1. Unit must have clearances as follows:
Top — Do not restrict.
Sides and End — 6 (1.8 m) from solid surface.
2. All pumps have drains located at the bottom of volute
for draining.
3. Temperature relief devices located on suction line,
liquid line and filter drier of each circuit and have
1
/
4
flare connection.
4. Units without a pump package have the same leaving
water connection, Y and Z dimensions (entering
water), and Pump Discharge X dimensions as units
with a pump package.
5. Dimensions are in mm [inches].
6. Allow 8 ft (2.4 m) of service access on either side of
Weight (empty, lb)7157158568568569709709701518
Net Fluid Volume (gal)28.228.231.331.331.345.845.845.873.5
Maximum Refrigerant Pressure (psig)445445445445445445445445445
Maximum Water Side Pressure
Fan Speed (rpm) Standard114011401140114011401140114011401140
No. Blades...Diameter (in.)9...309…309…309…309…309…309…309…309…30
No. Fans (Ckt A/Ckt B/Ckt C)3/1/—3/1/—2/2/—3/3/—3/3/—3/3/—3/4/—4/4/—4/4/—
Total Airflow (cfm)49,60049,60049,60074,40074,40074,40086,80099,20099,200
CONDENSER COILS
No. Coils (Ckt A/Ckt B/Ckt C)3/1/—3/1/—2/2/—3/3/—3/3/—3/3/—3/4/—4/4/—4/4/—
Total Face Area (sq ft)949494141141141164188188
Max Working Refrigerant Pressure (psig)656656656656656656656656656
OPTIONAL HEAT RECOVERY CONDENSERFlooded, Shell and Tube Type
Weight (lb) (empty)753753753872872872123612361236
Net Fluid Volume (gal)8.08.08.010.010.010.015.115.115.1
Maximum Refrigerant Pressure (psig)656656656656656656656656656
Maximum Water Side Pressure (psig)300300300300300300300300300
Water Connections (in.)
Inlet and Outlet, Victaulic333333555
Drain (NPT)
HYDRONIC MODULE (Optional)Pump(s) with pressure/temperature taps and combination valve.
Weight (empty, lb)15181518151823822382238223822382
Net Fluid Volume (gal)73.573.573.586.686.686.686.686.6
Maximum Refrigerant Pressure (psig)445445445445445445445445
Maximum Water Side Pressure
Fan Speed (rpm) Standard11401140114011401140114011401140
No. Blades...Diameter (in.)9…309…309…309…309…309…309…309…30
No. Fans (Ckt A/Ckt B/Ckt C)6/4/—6/4/—6/6/—4/4/44/4/44/4/66/6/46/6/6
Total Airflow (cfm)124,000124,000148,800148,800148,800173,600198,400223,200
CONDENSER COILS
No. Coils (Ckt A/Ckt B/Ckt C)6/4/—6/4/—6/6/—4/4/44/4/44/4/66/6/46/6/6
Total Face Area (sq ft)235235282282282328375422
Max Working Refrigerant Pressure (psig)656656656656656656656656
OPTIONAL HEAT RECOVERY CONDENSERFlooded, Shell and Tube Type
Weight (lb) (empty)129612961296—————
Net Fluid Volume (gal)17.417.417.4—————
Maximum Refrigerant Pressure (psig)656656656—————
Maximum Water Side Pressure (psig)300300300—————
Water Connections (in.)
Inlet and Outlet, Victaulic555—————
Drain (NPT)
HYDRONIC MODULE (Optional)Pump(s) with pressure/temperature taps
Weight (empty, kg)324324388388388440440440689
Net Fluid Volume (L)106106118118118173173173278
Maximum Refrigerant Pressure (kPa)306830683068306830683068306830683068
Maximum Water Side Pressure
without Pumps (kPa)206820682068206820682068206820682068
Maximum Water Side Pressure
with Pumps (kPa)103410341034103410341034103410341034
No. Coils (Ckt A/Ckt B/Ckt C)3/1/—3/1/—2/2/—3/3/—3/3/—3/3/—3/4/—4/4/—4/4/—
Total Face Area (sq m)8.738.738.7313.113.113.115.2417.4717.47
Max Working Refrigeration
OPTIONAL HEAT RECOVERY
CONDENSER
Weight (kg) (empty)342342342396396396562562562
Net Fluid Volume (L)30.330.330.337.937.937.957.257.257.2
Maximum Refrigerant Pressure (kPa)452345234523452345234523452345234523
Maximum Water Side Pressure (kPa)206820682068206820682068206820682068
Water Connections (in.)
Inlet and Outlet, Victaulic333333555
Drain (NPT)
HYDRONIC MODULE (Optional)Pump(s) with pressure/temperature taps and combination valve.
Weight (empty, kg)68968968910801080108010801080
Net Fluid Volume (L)278278278327327327327327
Maximum Refrigerant Pressure (kPa)30683068306830683068306830683068
Maximum Water Side Pressure
without Pumps (kPa)20682068206820682068206820682068
No. Coils (Ckt A/Ckt B/Ckt C)6/4/—6/4/—6/6/—4/4/44/4/44/4/66/6/46/6/6
Total Face Area (sq m)21.8321.8326.226.226.230.4734.8439.21
Max Working Refrigeration Pressure (kPa)45224522452245224522452245224522
OPTIONAL HEAT RECOVERY CONDENSERFlooded, Shell and Tube Type
Weight (kg) (empty)589589589—————
Net Fluid Volume (L)65.965.965.9—————
Maximum Refrigerant Pressure (kPa)452345234523—————
Maximum Water Side Pressure (kPa)206820682068—————
Water Connections (in.)
Inlet and Outlet, Victaulic555—————
Drain (NPT)
HYDRONIC MODULE (Optional)Pump(s) with pressure/temperature taps
MCHX Condenser Coil9,475/9,4759,799/9,4759,799/9,79911,064/9,79911,064/11,064
REFRIGERANT TYPER-410A, EXV Controlled System
Circuits Qty44444
Refrigerant Charge
Std Coil, Module A Ckt A/Ckt B (lb)162/106162/133162/133162/162162/162
Std Coil, Module B Ckt A/Ckt B (lb)162/106162/106162/133162/133162/162
MCHX Coil, Module A Ckt A/Ckt B (lb)83/5583/6483/6483/8783/87
MCHX Coil, Module B Ckt A/Ckt B (lb)83/5583/5583/6483/6483/87
COMPRESSORSScroll, Hermetic
Total Quantity1414141516
Speed (rpm)3500
Module A, (Qty) Compressor Model Number Ckt A(4) SH295(4) SH295(4) SH295(4) SH295(4) SH295
Module A, (Qty) Compressor Model Number Ckt B(3) SH240(3) SH295(3) SH295(4) SH295(4) SH295
Module B, (Qty) Compressor Model Number Ckt A(4) SH295(4) SH295(4) SH295(4) SH295(4) SH295
Module B, (Qty) Compressor Model Number Ckt B(3) SH240(3) SH240(3) SH295(3) SH295(4) SH295
Module A Oil Charge (Pt, Ckt A/Ckt B)52.5/39.452.5/39.452.5/39.452.5/52.552.5/52.5
Module B Oil Charge (Pt, Ckt A/Ckt B)52.5/39.452.5/39.452.5/39.452.5/39.452.5/52.5
No. Capacity Steps
Standard1414141516
Optional (Maximum)1616161718
Minimum Capacity Step (%)
Standard66776
Optional54655
Capacity (%)
Module A, Ckt A3130292725
Module A, Ckt B1922212725
Module B, Ckt A3130292725
Module B, Ckt B1918212025
COOLERDirect Expansion, Shell and Tube Type
Module A Weight (empty, lb)15181518151815181518
Module B Weight (empty, lb)15181518151815181518
Net Fluid Volume (gal) Module A/Module B73.5/73.573.5/73.573.5/73.573.5/73.573.5/73.5
Maximum Refrigerant Pressure (psig)445445445445445
Maximum Water Side Pressure (psig)300300300300300
Standard Low Noise Type
Fan Speed (rpm) Standard11401140114011401140
Module A No. Blades...Diameter (in.) Ckt A/Ckt B9...30/9...309...30/9...309...30/9...309...30/9...309...30/9...30
Module B No. Blades...Diameter (in.) Ckt A/Ckt B9...30/9...309...30/9...309...30/9...309...30/9...309...30/9...30
Total No. Fans2020202224
Module A No. Fans (Ckt A/Ckt B)6/46/46/46/66/6
Module B No. Fans (Ckt A/Ckt B)6/46/46/46/46/6
Total Airflow (cfm)248,000248,000248,000272,800297,600
CONDENSER COILS
Module A No. Coils (Ckt A/Ckt B)6/46/46/46/66/6
Module B No. Coils (Ckt A/Ckt B)6/46/46/46/46/6
Total Face Area (sq ft)470470470517564
Max Working Refrigerant Pressure (psig)656656656656656
MCHX Condenser Coil4297/42974444/42974444/44445018/44445018/5018
REFRIGERANT TYPER-410A, EXV Controlled System
Circuits Qty44444
Refrigerant Charge
Std Coil, Module A Ckt A/Ckt B (kg)73.5/48.173.5/60.373.5/60.373.5/73.573.5/73.5
Std Coil, Module B Ckt A/Ckt B (kg)73.5/48.173.5/48.173.5/60.373.5/60.373.5/73.5
MCHX Coil, Module A Ckt A/Ckt B (kg)37.6/24.937.6/29.037.6/29.037.6/39.537.6/39.5
MCHX Coil, Module B Ckt A/Ckt B (kg)37.6/24.937.6/24.937.6/29.037.6/29.037.6/39.5
COMPRESSORSScroll, Hermetic
Total Quantity1414141516
Speed (r/s)58.3
Module A, (Qty) Compressor Model Number Ckt A(4) SH295(4) SH295(4) SH295(4) SH295(4) SH295
Module A, (Qty) Compressor Model Number Ckt B(3) SH240(3) SH295(3) SH295(4) SH295(4) SH295
Module B, (Qty) Compressor Model Number Ckt A(4) SH295(4) SH295(4) SH295(4) SH295(4) SH295
Module B, (Qty) Compressor Model Number Ckt B(3) SH240(3) SH240(3) SH295(3) SH295(4) SH295
Module A Oil Charge (L, Ckt A/Ckt B)24.8/18.624.8/18.624.8/18.624.8/24.824.8/24.8
Module B Oil Charge (L, Ckt A/Ckt B)24.8/18.624.8/18.624.8/18.624.8/18.624.8/24.8
No. Capacity Steps
Standard1414141516
Optional (Maximum)1616161718
Minimum Capacity Step (%)
Standard66776
Optional54655
Capacity (%)
Module A, Ckt A3130292725
Module A, Ckt B1922212725
Module B, Ckt A3130292725
Module B, Ckt B1918212025
COOLERDirect Expansion, Shell and Tube Type
Module A Weight (empty, kg)689689689689689
Module B Weight (empty, kg)689689689689689
Net Fluid Volume (L) Module A/Module B278/278278/278278/278278/278278/278
Maximum Refrigerant Pressure (kPa)30683068306830683068
Maximum Water Side Pressure (kPa)20682068206820682068
WATER CONNECTIONS (in.)
Inlet and Outlet, Victaulic66666
Drain (NPT)
CONDENSER FANSShrouded Axial Type, Vertical Discharge
Standard Low Noise Type
Fan Speed (r/s) Standard1919191919
Module A No. Blades...Diameter (mm) Ckt A/Ckt B9...762/9...7629...762/9...7629...762/9...7629...762/9...7629...762/9...762
Module B No. Blades...Diameter (mm) Ckt A/Ckt B9...762/9...7629...762/9...7629...762/9...7629...762/9...7629...762/9...762
Total No. Fans2020202224
Module A No. Fans (Ckt A/Ckt B)6/46/46/46/66/6
Module B No. Fans (Ckt A/Ckt B)6/46/46/46/46/6
Total Airflow (L/s)117 042117 042117 042128 747140 452
CONDENSER COILS
Module A No. Coils (Ckt A/Ckt B)6/46/46/46/66/6
Module B No. Coils (Ckt A/Ckt B)6/46/46/46/46/6
Total Face Area (sq m)43.6643.6643.6648.0352.4
Max Working Refrigerant Pressure (kPa)45224522452245224522
securing the compressor rail assembly to the unit base frame.
These bolts are red and are located between the compressors in
the front and rear of the compressor rail assembly. These bolts
and holddown assemblies must be removed for the vibration
isolation system to operate properly. Using a 15mm socket,
loosen and remove the bolt and collar assembly as shown in
Fig. 26.
See Table 5 for the number of holddown assemblies for
each unit.
Isolation mounts for the compressor rail assembly are
located directly in front of and behind each compressor. Do
not loosen or remove the isolation mounts, only the shipping
bolts. There are 4 bolts that hold down each compressor. Do
not loosen these bolts.
The 30RB units are shipped with holddown bolts
Step 3 — Remove Compressor Shipping
Braces — Each unit is equipped with compressor shipping
braces tying each compressor on the circuit together. Prior to
start-up these braces must be removed. Using a 15mm socket,
loosen each bolt and nut on each compressor tab and remove
all braces before unit start-up. Remove the compressor shipping braces attached between the compressors; see Fig. 27 for
guidance.
FOR UNITS EQUIPPED WITH COMPRESSOR SOUND
BLANKETS — The sound blanket top covers are shipped inside the control box(es) for the unit. Remove the top covers
from the control boxes and install prior to start-up. Align the
discharge tube with the cutout on the top cover; see Fig. 28.
Firmly press the Velcro sections together, ensuring the top cover is held tightly against the blanket.
Step 4 — Make Cooler Fluid, Heat Reclaim and
Drain Piping Connections —
it is recommended additional field-supplied air vents be installed. Locate air vents at the highest possible point of the
chilled water and heat reclaim systems. In addition to field-supplied air vents, facilitate servicing in addition to flow balancing
by installing field-supplied shut-off valves, thermometers,
clean-out tees, pressure and temperature taps in the inlet and
outlet piping. Locate valves in return and supply cooler water
and heat reclaim lines as close to the chiller as possible.
In sound sensitive applications, consider the installation of
piping vibration isolators. Drain connections are provided in
the cooler. Refer to the dimensional drawings, Fig. 2-20 for locations. Insulate the drain piping (in the same manner as the
chilled water piping) for at least 12-in. (305 mm) from the
cooler.
FREEZE PROTECTION — Upon completion of the field
piping installation, freeze protection must be considered.
Freeze protection for the cooler is available from the factory
with a freeze protection option for the unit. Freeze protection
for the pump (hydronic) package is standard on all units with
the optional hydronic package (30RB060-190 units). External
piping freeze protection also must be considered. Since power
is sometimes lost for extended periods during winter storms,
freeze protection provided by heater tapes will be effective
only if a back-up power supply can be assured for the unit's
control circuit, heater and cooler pump. If not protected with
an antifreeze solution, draining the cooler and outdoor piping
is recommended if the system will not be used during freezing
weather conditions.
NOTE: See Freeze Protection section on page 54 for a more
detailed overview of freeze protection.
IMPORTANT: Glycol anti-freeze solutions are highly
recommended since heater tapes provide no protection
in the event of a power failure.
UNITS WITH HYDRONIC PUMP PACKAGE — The
30RB060-190 units can be equipped with a factory-installed
hydronic pump package consisting of a suction guide/strainer,
pump, combination valve, internal piping and wiring connected at the factory.
38
To facilitate servicing,
Page 39
The combination valve performs the following functions:
PT
PT
T1
T2
FS
PP
PP
D
D
V
D
PT
PT
Chilled
Water In
Chilled
Water Out
Heater (Optional)
Heater
E
PT
Air Separator with Vent*
Strainer/Suction Guide
Pump
Combination Valve
Isolation Valve*
Pressure Reducing
Fill Valve*
Flexible Connections*
Pressure Relief*
HYDRONIC PUMP PACKAGE
INSIDE
UNIT
OUTSIDE
UNIT
20 Mesh Strainer**
LEGEND
*Field-supplied and installed.
†Factory-installed option.
**Required within 10 ft (3 m) of cooler in addition
to suction strainer for open loop systems.
D—Drain,
3
/4-in. NPT
D — Drain,
1
/4-in. NPT
E—Expansion Tank Connection,
3
/4-in. NPT
FS — Flow Switch
PP — Pipe Plug,
1
/4-in. NPT
PT — Pressure/Temperature Tap
T1 — Leaving Water Thermistor
T2 — Entering Water Thermistor
V—Vent,
1
/4-in. NPT
Indicates items provided with the
optional hydronic pump package.
Fig. 29 — Typical Piping Diagram on 30RB Units with Hydronic Package — Single Pump
A30-5303
•Drip-tight shut-off valve
•Spring closure design with a non-slam check valve
•Flow-throttling valve
Refer to Fig. 2-20 for cooler connection locations. The inlet
is connected to the suction guide/strainer of the pump via a
Victaulic-type connection. The cooler supply has water-side
Victaulic-type connections (follow connection directions as
provided by the coupling manufacturer). Provide proper support for the piping. If compressor and cooler grilles have been
added, holes must be cut in the grilles for field piping and
insulation.
The suction guide/strainer is shipped from the factory with a
run-in screen. This screen is a temporary device used during
the start-up/clean-up process of the chilled water circuit to
prevent construction debris from damaging the pump or
internal tubes of cooler. After all debris has been removed or a
maximum of 24 running hours the temporary screen must
be removed. See the Controls, Start-Up, Operation, Service and
Troubleshooting guide for further information.
CAUTION
The suction guide/strainer is shipped from the factory with
a run-in screen. This temporary screen must be removed
after all debris has been removed or a maximum of 24 running hours. Failure to remove the temporary screen may
result in damage to the pump or cooler.
NOTE: Units with factory-installed hydronic pump packages
applied on open loop systems require that an additional fieldsupplied strainer with a minimum size of 20 mesh be installed
within 10 ft (3.05 m) of and ahead of the cooler inlet to prevent
debris from damaging internal tubes of the cooler.
CAUTION
Do not circulate water through unit without strainers in
place. Failure to use the strainers represents abuse and may
impair or otherwise negatively affect the Carrier product
warranty.
3
/4 in. NPT fitting is installed in the inlet piping of the
A
pump for connection to an expansion tank. Install the tank in
accordance with the manufacturer's instructions.
Figures 29 and 30 illustrate typical single and dual pump
packages.
Two drain connections are provided and are located at
pump volute, and the suction guide. See Fig. 2-20 for connection location.
39
Page 40
INSIDE
LEGEND
*Field-supplied and installed.
†Factory-installed option.
**Required within 10 ft (3 m) of cooler in addition to suction strainer for open loop systems.
PT — Pressure/Temperature Tap
T1 — Leaving Water Thermistor
T2 — Entering Water Thermistor
V—Vent,
1
/4-in. NPT
Fig. 30 — Typical Piping Diagram on 30RB Units with Hydronic Package — Dual Pumps
A30-5304
UNIT
OUTSIDE
UNIT
Chilled
Water Out
D
Heater (Optional)
FS
T1
PP
HYDRONIC PUMP PACKAGE
PT
PT
D
PT
PT
E
PP
D
V
T2
PT
Chilled
Water In
Pressure Relief*
Flexible Connections*
D
Heater
Air Separator with Vent*
Strainer/Suction Guide
Reverse Flow Check
Valve/Service Valve
Service Valve
Pump
Combination Valve
Isolation Valve*
UNITS WITHOUT HYDRONIC PUMP PACKAGE — Refer
to Fig. 2-20 for cooler connection locations. It is required that a
field-supplied strainer with a minimum size of 20 mesh be
installed within 10 ft (3.05 m) of and ahead of the cooler inlet
to prevent debris from damaging internal tubes of the cooler.
CAUTION
Do not circulate water through unit without strainers in
place. Failure to use the strainers represents abuse and may
impair or otherwise negatively affect the Carrier product
warranty.
Pressure Reducing
Fill Valve*
20 Mesh Stainer**
The cooler has water-side victaulic-type connections (follow connection directions as provided by the coupling manufacturer). Provide proper support for the piping. If compressor
and cooler grilles have been added, holes must be cut in the
grilles for field piping and insulation. See Fig. 31 for a typical
piping diagram of a 30RB unit without a hydronic pump
package.
A drain connection is located at the leaving water (supply)
end of cooler. See Fig. 2-20 for connection location. Insulate
the drain piping (in the same manner as the chilled water
piping) for at least 12 in. (305 mm) from the unit.
UNITS WITH OPTIONAL HEAT RECLAIM — The
30RB060-190 units can be equipped with a factory-installed
heat reclaim package consisting of a shell and tube condenser,
40
Page 41
condenser flow switch, temperature sensors and refrigeration
T1
T2
FS
PP
PP
D
V
Heater (Optional)
Chilled Water
Out
Chilled Water
In
Isolation Valve*
20 Mesh Strainer†
Flexible Connections*
Pressure Relief*
LEGEND
*Field-supplied and installed.
D—Drain,
3
/4-in. NPT
FS — Flow Switch
PP — Pipe Plug,
1
/4-in. NPT
T1 — Leaving Water Thermistor
T2 — Entering Water Thermistor
V—Vent,
1
/4-in. NPT
Fig. 31 — Typical Piping Diagram on 30RB Units without Hydronic Package
a30-5321
Fig. 32 — Typical Piping Diagram on 30RB Units with Heat Reclaim Option
LEGEND
*Field-supplied and installed.
D* — Drain, Field Supplied
D—Drain,
3
/8-in. NPT
FS — Flow Switch
PP — Pipe Plug, 1/4-in. NPT
R—Pressure Relief
T1 — Leaving Water Thermistor
T2 — Entering Water Thermistor
V* — Vent, Field Supplied
V—Vent,
3
/8-in. NPT
devices to allow up to 100% of the condenser heat to be reclaimed for hot water. This means that this water-cooled condenser, which is in parallel with the standard air-cooled condenser, is capable of capturing all of the heat available from the
chiller condensing process. The leaving water temperature can
reach at maximum 131 F (55 C) under steady state and constant hot water flow conditions with an allowable hot water
temperature range of 68 to 131 F (20 to 55 C). The heat reclaim
condenser fluid connections are at the end of the unit opposite
the control panel. The temperature sensor and the condenser
flow switch are mounted in the nozzles and are wired in the
control box. Refer to the Controls and Troubleshooting Book
for detailed operational information.
The heat reclaim condenser has water-side Victaulic-type
connections (follow connection directions as provided by the
coupling manufacturer). Provide proper support for the piping.
If compressor and cooler grilles have been added, holes must
be cut for field piping and insulation. A field-supplied strainer
with a minimum size of 20 mesh must be installed within 10 ft
(3.0 m) of the inlet to the heat reclaim condenser. See Fig. 32
for a typical piping diagram of the heat reclaim condenser and
3-way valve location. All piping must follow standard piping
techniques. Refer to Carrier System Design Manual or appropriate ASHRAE (American Society of Heating, Refrigerating,
and Air-Conditioning Engineers) handbook for details.
CAUTION
Do not circulate water through unit without strainers in
place. Failure to use the strainers represents abuse and may
impair or otherwise negatively affect the Carrier product
warranty.
Two drain connections are provided, one in each head of the
condenser.
HEAD PRESSURE CONTROL — A form of head pressure
control is required while in the heat reclaim mode. In order to
meet this requirement, a properly sized 3-way valve must be
field-installed. This valve will facilitate cold water start-up
(water temperatures below 68 F [20 C]), and it also will be able
to maintain proper head pressure during heat reclaim operation.
Since the hot water temperature at start-up may be very low,
the 3-way valve is to be located as close to the heating condenser as possible so that this valve can quickly accomplish its
purpose of maintaining the minimum required head pressure.
Locate the 3-way valve within 40 ft (12.2 m) of the heating
condenser if the circulating pump is located between the 3-way
valve and the heat reclaim condenser. See Fig. 33A. If the
pumps are too far away from the condenser, a second option is
to install the 3-way control valve close to the condenser. See
Fig. 33B. The 30RB unit uses an anolog output to control this
valve.
HEAT
RECLAIM
SUPPLY
HEAT
RECLAIM
RETURN
T1
FS
PP
PP
HEAT RECLAIM CONDENSER
T2
Flexible Connections*
Pump*
Isolation Valve*
20 Mesh Strainer*, installed
within 10 ft (3 m) of condenser
inlet
Three-Way Valve*
V
D
41
V*
D*
D
R
Page 42
NOTE: Locate the 3-way valve as close as possible to the
SUPPLY
RETURN
CONSTA NT SPEED
CIRCULATING PUMPS
HEAT RECLAIM
CONDENSER
MODULATING 3-WAY
CONTROL VALVE
40 FT MAX
Fig. 33A — Three-Way Head Pressure Control
Valve Location (Preferred)
a30-4825
MODULATING 3-WAY CONTROL
VALVE (AS CLOSE TO CONDENSER
AS POSSIBLE)
HEAT RECLAIM
CONDENSER
CONSTAN T SPEED
CIRCULATING PUMPS
RETURN
SUPPLY
Fig. 33B — Three-Way Head Pressure Control
Valve Location (Alternate)
a30-4824
chiller to minimize head pressure control response time.
FOR ALL UNITS
Dual Chiller Control Option
— If the dual chiller algorithm is
used, and the machines are installed in parallel, an additional
chilled water sensor must be installed for each module. For
30RB315-390, a factory-supplied thermistor and well are
shipped in the control box of each module. Install the wells in
the common leaving water header. See Fig. 34.
Parallel chiller control with dedicated pumps is recommended. Chiller must start and stop its own water pump located in its own piping. If pumps are not dedicated for each
chiller, then isolation valves are required. Each chiller must
open and close its own isolation valve through the unit control
(the valve must be connected to the pump outputs).
See Dual Chiller Control Option section on page 58 for
more dual chiller leaving water sensor information.
Minimum Loop Volume
— The preferred minimum loop volume is dependent on the type of application. In order to obtain
leaving water temperature stability for comfort cooling applications, a minimum of 3 gallons per ton (3.25 liters per kW) is
required on all unit sizes. For process cooling applications, applications where high stability is critical, or operation at
ambient temperatures below 32 F (0° C) is expected, the loop
volume should be increased to 6 to 10 gallons per ton (6.46 to
10.76 liters per kW) of cooling.
In order to achieve this volume, it may be necessary to add a
water storage tank to the water loop. If a storage tank is added
to the system, it should be properly vented so that the tank can
be completely filled and all air eliminated. Failure to do so
could cause lack of pump stability and poor system operation.
Any storage tank that is placed in the water loop should
have internal baffles to allow thorough mixing of the fluid. See
Fig. 35. For units with heat reclaim option, a minimum condenser loop volume of 6 gallons per ton of heating (0.5 to 0.83
gallons [1.9 to 3.1 L] per 100 Btu/h of heating) capacity is necessary. In come cases, this will require the installation of a hotwater buffer tank.
System Piping
— Proper system design and installation procedures should be followed closely. The system must be
constructed with pressure tight components and thoroughly
tested for leaks.
Installation of water systems should follow sound engineering practice as well as applicable local and industry standards.
Improperly designed or installed systems may cause
unsatisfactory operation and/or system failure. Consult a water
treatment specialist or appropriate literature for information
regarding filtration, water treatment, and control devices.
Figure 29 shows a typical installation with components that
might be installed with the hydronic package of the 30RB unit.
NOTE: It is recommended for units with the hydronic package
that an inlet isolation (shutoff) valve be placed exterior to the
unit to allow removal and service of the entire pump assembly,
if necessary. The hydronic package is supplied from the factory
with a combination valve for isolation of leaving water. Also,
if the unit is isolated with valves, a properly sized pressure
relief valve is recommended and should be installed in the piping between the unit and the valves, following all applicable
local codes.
Air Separation
— For proper system operation, it is essential
that water loops be installed with proper means to manage air
in the system. Free air in the system can cause noise, reduce
terminal output, stop flow, or even cause pump failure due to
pump cavitation. For closed systems, equipment should be
provided to eliminate all air from the system.
The amount of air that water can hold in solution depends
on the pressure and temperature of the water/air mixture. Air is
less soluble at higher temperatures and at lower pressures.
Therefore, separation can best be done at the point of highest
water temperature and lowest pressure. Typically, this point
would be on the suction side of the pump as the water is returning from the system or terminals. This is generally the optimal
place to install an air separator, if possible.
1. Install automatic air vents at all high points in the system.
(If the 30RB unit is located at the high point of the system,
a vent can be installed on the piping leaving the heat exchanger on the
1
/4 in. NPT female port.)
2. Install an air separator in the water loop, at the place
where the water is at higher temperatures and lower pressures — usually in the chilled water return piping. On a
primary-secondary system, the highest temperature water
is normally in the secondary loop, close to the decoupler.
Preference should be given to that point on the system
(see Fig. 36). In-line or centrifugal air separators are readily available in the field.
It may not be possible to install air separators at the place of
the highest temperature and lowest pressure. In such cases,
preference should be given to the points of highest temperature.
It is important that the pipe be sized correctly so that free air
can be moved to the point of separation. Generally, a water
velocity of at least 2 feet per second (0.6 m per second) will
keep free air entrained and prevent it from forming air pockets.
Automatic vents should be installed at all physically elevated points in the system so that air can be eliminated during system operation. Provisions should also be made for manual
venting during the water loop fill.
IMPORTANT: Automatic vents should be located in
accessible locations for maintenance purposes and
protected from freezing.
42
Page 43
Master Chiller
Control
Box
Control
Box
Slave Chiller
Pump and Check Valve
or Isolation Valve
Dual Chiller
LWT Sensors
and Wells
Pump and Check Valve
or Isolation Valve
a30-3987ef
LEGEND
NOTE: This is a simplified piping diagram — not all hydronic specialties are shown.
Fig. 34 — Dual Chiller Control Option Thermistor
Location
LWT — Leaving Water (Fluid) Temperature
Field Wiring
Field Communication Wiring
a30-3185ef
Tank Installation
BAD
BAD
GOOD
GOOD
Fig. 35 — Tank Baffling
Distribution Pump
Expansion
Tank(s)
Air Separator
with Vent
Decoupler
Chiller 1
Chiller 2
Zone 1
Zone 2
Zone 3
NOTE: Expansion tanks for 30RB hydronic kits must be installed for chillers piped in parallel in the primary water loop.
Fig. 36 — Typical Air Separator and Expansion Tank Location on Primary-Secondary Systems
a30-4002ef
43
Page 44
Step 5 — Fill the Chilled Water and Heat
x
x
DILUTED
CLEANING
AGENT
SYSTEM
SIDE
STREAM
FILTER
POT FEEDER AND
TRANSFER PUMP
30RB UNIT
TO DRAIN
TEMPORARY
PUMP
TEMPORARY
BYPASS
x
x
DILUTED
CLEANING
AGENT
SYSTEM
POT FEEDER AND
TRANSFER PUMP
30RB UNIT
TO DRAIN
TEMPORARY
PUMP
TEMPORARY
BYPASS
Fig. 37 — Typical Set Up for Cleaning Process
Fig. 38 — Cleaning Using a Side Stream Filter
a30-3989ef
a30-3988ef
Reclaim Loop
IMPORTANT: Before starting unit, be sure all of the
air has been purged from the system.
The chilled water pump (if equipped) is rated for 150 psig
(1034 kPa) duty. The maximum cooler water-side pressure is
300 psig (2068 kPa). Check the pressure rating for all of the
chilled water devices installed. Do not exceed the lowest pressure rated device.
WATER SYSTEM CLEANING — Proper water system
cleaning is of vital importance. Excessive particulates in the
water system can cause excessive pump seal wear, reduce or
stop flow, and cause damage of other components.
CAUTION
Failure to properly clean all piping and components of the
chilled water or heat reclaim system before unit start-up
may result in plugging of the heat exchanger, which can
lead to poor performance, nuisance alarms and/or damage
from freezing. Freezing damage caused by an improperly
cleaned system represents abuse and may impair or otherwise negatively affect the Carrier product warranty.
CAUTION
A suction guide with an internal strainer is standard on all
30RB units with factory-installed hydronic packages. This
strainer allows removal of particulates from the chilled
water loop. Using the combination valve and the field-installed
isolation valve at the inlet, the strainer can be isolated from the
chilled water loop to be cleaned.
The ComfortLink controls provided have a built-in feature
to remind building owners or operators to clean the strainer at a
pre-set time interval. Properly installed, cleaned and maintained systems will rarely need the strainer cleaned after the
initial fill. This time interval is user-configurable.
Ideally, the chilled water loop will be cleaned before the unit
is connected. If the run-in screen is left in the suction guide/
strainer, it is recommended that the Service Maintenance be set
to alert the operator within 24 hours of start-up to be sure that
the run-in screen in the suction guide/strainer is not removed at
start-up.
NOTE: The suction guide/strainer must be removed after the
first 24 hours of operation.
To set the time for the parameter, go to Time Clock/MCFG/
W.FIL in the scrolling marquee or the handheld Navigator™
display. Values for this item are input in days.
WATER TREATMENT — Fill the fluid loop with water and
a corrosion-resistant inhibitor suitable for the water of the area.
Consult the local water treatment specialist for characteristics
of system water and a recommended inhibitor for the cooler or
heat reclaim fluid loop.
Do not circulate water through unit without strainers in
place. Failure to use the strainers represents abuse and may
impair or otherwise negatively affect the Carrier product
warranty.
1. Install a temporary bypass around the chiller to avoid
circulating dirty water and particulates into the pump
package and chiller during the flush. Use a temporary
circulating pump during the cleaning process. Also, be
sure that there is capability to fully drain the system after
cleaning. See Fig. 37.
2. Be sure to use a cleaning agent that is compatible with
all system materials. Be especially careful if the system
contains any galvanized or aluminum components. Both
detergent-dispersant and alkaline-dispersant cleaning
agents are available.
3. It is recommended to fill the system(s) through a water
meter. This provides a reference point for the future for
loop volume readings, and it also establishes the correct
quantity of cleaner needed in order to reach the required
concentration.
4. Use a feeder/transfer pump to mix the solution and fill the
system. Circulate the cleaning system for the length of
time recommended by the cleaning agent manufacturer.
a. After cleaning, drain the cleaning fluid and flush the
system with fresh water.
b. A slight amount of cleaning residue in the system can
help keep the desired, slightly alkaline, water pH of 8
to 9. Avoid a pH greater than 10, since this will
adversely affect pump seal components.
c. A side stream filter is recommended (see Fig. 38)
during the cleaning process. Filter side flow rate
should be enough to filter the entire water volume
every 3 to 4 hours. Change filters as often as necessary during the cleaning process.
d. Remove temporary bypass when cleaning is complete.
44
Page 45
SYSTEM PRESSURIZATION — A proper initial cold fill
pressure must be established before filling of the unit. The
initial cold fill pressure is the pressure applied at the filling
point to fill a system to its highest point, plus a minimum
pressure at the top of the system (4 psig minimum [27.6 kPa])
to operate air vents and positively pressurize the system. The
expansion tank is very important to system pressurization. The
expansion tank serves several purposes:
1. Provide NPSH (net positive suction head) required for the
pump to operate satisfactorily.
2. Set system pressure.
3. Accommodate expansion or contraction of water due to
temperature changes.
4. Act as a pressure reference for the pump.
The expansion tank pressure must be set BEFORE the
system is filled. Follow the manufacturer’s recommendation
for instructions on setting the pressure in the expansion tank.
The net positive suction head pressure required information is
provided on the pump curves in Fig. 39-51 for units with factory-installed hydronic kits. See Table 6 for pump impeller sizes.
Once the system is pressurized, the pressure at the connection point of the expansion tank to water piping will not change
unless the water loop volume changes (either due to addition/
subtraction of water or temperature expansion/contraction).
The pressure at this point remains the same regardless of
whether or not the pump is running.
Since the expansion tank acts as a reference point for the
pump, there cannot be two reference points (two expansion
tanks) in a system, unless manifolded together. Where two or
more 30RB chillers with the hydronic option are installed in
parallel, there should not be more than one expansion tank in
the system, unless manifolded together as seen in Fig. 36. It is
permissible to install the expansion tank(s) in a portion of the
return water line that is common to all pumps, providing that
the tank is properly sized for combined system volume.
If the application involves two or more chillers in a primary
secondary system, a common place for mounting the expansion tank is in the chilled water return line, just before the
decoupler. See Fig. 36 for placement of expansion tank in
primary-secondary systems.
If a diaphragm expansion tank is utilized (a flexible
diaphragm physically separates the water/air interface) it is not
recommended to have any air in the water loop. See the section
on air separation on page 42 for instructions on providing air
separation equipment.
FILLING THE SYSTEM(S) — The initial fill of the chilled
water or heat reclaim system must accomplish three goals:
1. The entire piping system must be filled with water.
2. The pressure at the top of the system must be high enough
to vent air from the system (usually 4 psig [27.6 kPa] is
adequate for most vents).
3. The pressure at all points in the system must be high
enough to prevent flashing in the piping or cavitation in
the pump.
The pressure created by an operating pump affects system
pressure at all points except one — the connection of the
expansion tank to the system. This is the only location in the
system where pump operation will not give erroneous pressure
indications during the fill. Therefore, the best location to install
the fill connection is close to the expansion tank. An air vent
should be installed close by to help eliminate air that enters
during the fill procedure.
When filling the system, ensure the following:
1. Remove temporary bypass piping and cleaning/flushing
equipment.
2. Check to make sure all drain plugs are installed.
Table 6 — Pump Impeller Sizes
UNIT
30RB
060
070
080
090
100
110
120
130
150
160
170
190
*Option Code refers to the Hydronics Option (position 11) in the model number. See Fig. 1 for
option identification.
NOTE: Pump Selections are chiller size dependent. For example, dual pump “C” on a 30RB170
chiller is not the same as dual pump “C” on a 30RB130 chiller.
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
a30-5473
a30-4388
Fig. 39 — Pump Curve I for Hydronic Package Single Pump (Fresh Water)
Fig. 40 — Pump Curve II for Hydronic Package Single Pump (Fresh Water)
(m) ft of fluid
(21.3) 70
(18.3) 60
(15.2) 50
(12.2) 40
(9.1) 30
(6.1) 20
(3.0) 10
(0.0) 0
8.19 in
7.50 in
7.00 in
6.50 in
6.00 in
0
(0.00)
40
54
65
73
78
80
81
N
P
S
H
NPSHr
r
80
(5.05)
160
(10.09)
(15.14)
Flow Rate
2 hp
240
(20.19)
80
65%
3 hp
320
1750 RPM
78
73
7.5 hp
5 hp
400
(25.24)
(gpm)
us
(l/s)
46
Page 47
0
(0.00)
160
(10.09)
320
(20.19)
480
(30.28)
640
(40.38)
800
(50.47)
(gpm)
(l/s)
us
(0.0) 0
(3.7) 12
(7.3) 24
(11.0) 36
(14.6) 48
(18.3) 60
Head Pressure
(m) ft of fluid
Flow Rate
1750 RPM
N
P
S
H
r
6.50 in
77
77
73
73
67
67
59
59%
48
35
NPSHr
3 hp
5 hp
7.5 hp
10 hp
15 hp
8.19 in
6.00 in
78
Head Pressure
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
a30-4389
a30-5466
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
Fig. 41 — Pump Curve IIIA for Hydronic Package Single Pump (Fresh Water)
Fig. 42 — Pump Curve IIIB for Hydronic Package Single Pump (Fresh Water)
(m) ft of fluid
(21.3) 70
(18.3) 60
1750 RPM
(15.2) 50
(12.2) 40
(9.1) 30
(6.1) 20
(3.0) 10
(0.0) 0
0
(0.00)
(12.62)
200
400
(25.24)
Flow Rate
600
(37.85)
800
(50.47)
(gpm)
N
P
NPSHr
S
H
r
47
us
(l/s)
Page 48
Head Pressure
a30-5468
a30-5469
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
Fig. 43 — Pump Curve IVA for Hydronic Package Single Pump (Fresh Water)
Fig. 44 — Pump Curve IVB for Hydronic Package Single Pump (Fresh Water)
(m) ft of fluid
(42.7) 140
3450 RPM
(36.6) 120
(30.5) 100
(24.4) 80
(18.3) 60
(12.2) 40
(6.1) 20
(0.0) 0
0
(0.00)
N
P
S
NPSHr
H
r
200
(12.62)
400
(25.24)
600
(37.85)
Flow Rate
800
(50.47)
1000
(63.09)
(gpm)
us
(l/s)
Head Pressure
(m) ft of fluid
(42.7) 140
(36.6) 120
3450 RPM
(30.5) 100
(24.4) 80
(18.3) 60
(12.2) 40
(6.1) 20
(0.0) 0
0
(0.00)
N
P
S
NPSHr
H
r
200
(12.62)
400
(25.24)
600
(37.85)
Flow Rate
800
(50.47)
1000
(63.09)
(gpm)
us
(l/s)
48
Page 49
Head Pressure
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
a30-4391
a30-4392
Fig. 45 — Pump Curve V for Hydronic Package Dual Pump (Fresh Water)
Fig. 46 — Pump Curve VI for Hydronic Package Dual Pump (Fresh Water)
(m) ft of fluid
(18.3) 60
(14.6) 48
(11.0) 36
(7.3) 24
(3.7) 12
(0.0) 0
8.19 in
8.15 in
7.30 in
6.50 in
6.00 in
0
(0.00)
72
3 hp
1750 RPM
64
53
5 hp
400
7.5 hp
(gpm)
39
53
64
72
77
80
80
80
77
N
P
S
H
NPSHr
r
80
160
1 hp
240
2 hp
1.5 hp
320
us
(5.05)
(10.09)
(15.14)
Flow Rate
(20.19)
(25.24)
(l/s)
Head Pressure
(m) ft of fluid
(45.7) 150
(36.6) 120
6.19 in
5.90 in
5.25 in
4231
52
60
65
69
70
69
65
60
3450 RPM
52
15 hp
(27.4) 90
(18.3) 60
(9.1) 30
(0.0) 0
4.50 in
0
(0.00)
5 hp
N
P
S
H
NPSHr
r
60
(3.79)
120
(7.57)
3 hp
180
(11.36)
Flow Rate
7.5 hp
10 hp
240
(15.14)
(gpm)
us
(l/s)
49
Page 50
0
(0.00)
100
(6.31)
200
(12.62)
300
(18.93)
400
(25.24)
500
(31.54)
(gpm)
(l/s)
us
(0.0) 0
(9.1) 30
(18.3) 60
(27.4) 90
(36.6) 120
(45.7) 150
Head Pressure
(m) ft of fluid
Flow Rate
3450 RPM
N
P
S
H
r
77
77
74
74
70
70
62
62
52
52%
39
NPSHr
3 hp
5 hp
7.5 hp
10 hp
15 hp
20 hp
6.19 in
6.10 in
5.40 in
77
Head Pressure
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
a30-4393
a30-5467
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
Fig. 47 — Pump Curve VIIA for Hydronic Package Dual Pump (Fresh Water)
Fig. 48 — Pump Curve VIIB for Hydronic Package Dual Pump (Fresh Water)
(m) ft of fluid
(42.7) 140
(36.6) 120
3450 RPM
(30.5) 100
(24.4) 80
(18.3) 60
(12.2) 40
(6.1) 20
(0.0) 0
0
(0.00)
N
P
S
NPSHr
H
r
100
(6.31)
(12.62)
200
Flow Rate
50
300
(18.93)
400
(25.24)
500
(31.55)
(gpm)
us
(l/s)
Page 51
Head Pressure
a30-5472
a30-5470
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
LEGEND
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
NPSHr — Net Positive Suction Head (Pressure) Required
NOTE: Refer to the 30RB nomenclature, Fig. 1, for option identification. Refer to the Pump Impeller Sizes, Table 6, for more information.
Normally, a closed system needs to be filled only once. The
actual filling process is a fairly simple procedure. All air should
be purged or vented from the system. Thorough venting at high
points and circulation at room temperature for several hours is
highly recommended.
NOTE: Local codes concerning backflow devices and other
protection of the city water system should be consulted and
followed to prevent contamination of the public water supply.
This is critical when antifreeze is used in the system.
SET WATER FLOW RATE — Once the system is cleaned,
pressurized, and filled, the flow rate through the chiller and
heat reclaim needs to be established. Refer to the Job Submittal for flow rate requirements. See the Controls and
Troubleshooting literature for operating limits. On units
with the hydronic package, this can be accomplished by
using the balancing valve. Follow the manufacturer’s recommendations for setting the balancing valve. Local codes
may prohibit restricting the amount of water using the balancing valve for a given motor horsepower. In this case, use
the method listed in the Pump Modification/Trimming section. See Table 7 for the type of combination valve in 30RB
units with the optional hydronic package.
Table 7 — Combination Valve Details
30RB UNITSINGLE/DUAL PUMP
060-130FTV-4 in.
150-190FTV-6 in.
NOTE: Carrier recommends a differential pressure gage when
measuring pressures across the pumps or balancing valves.
This provides for greater accuracy and reduces error build-up
that often occurs when subtracting pressures made by different
gages.
A rough estimate of water flow can also be obtained from
the pressure gages across the 30RB heat exchangers.
Figures 52-56 show the relationship between gpm and heat
exchanger pressure drop. It should be noted that these curves
are for fresh water and “clean” heat exchangers; they do not
apply to heat exchangers with fouling. To read the chart,
subtract the readings of the two pressure gages on the hydronic
kit. This number is the pressure drop across the heat exchanger.
Adjust the factory-installed balancing valve or external balancing valve (in units without hydronic package) until the correct
pressure drop is obtained for the required gpm.
PUMP MODIFICATION/TRIMMING — Since the pumps
are constant speed, the only way to obtain greater flow with a
given pump/impeller is to decrease system head. This will
allow the pump to “ride” its curve to the right, resulting in
increased flow. If greater flow is necessary, consider opening
the combination valve. Also, verify that the strainer is clean,
and that no unnecessary system resistance is present, such as
partially closed isolation valves.
Once the combination valve is set, note the stem position. If
later service work requires the valve to be closed, it will be easier
to re-balance the system, if the original balance point is known.
Increasing system resistance by closing the balancing valve
will force the pump to “ride” its curve to the left, resulting in
less flow. Although this does reduce power consumption
slightly, it may not be the desirable method of reducing the
flow, especially if a large reduction is needed.
52
Page 53
The other method for reducing flow on a constant speed
pump is impeller trimming. The impellers in the pumps provided in the 30RB hydronic kit can be easily removed for this
purpose. Refer to the vendor literature packet supplied with the
hydronic package information on Seal Replacement in the
Service Section, and follow instructions for impeller removal
and trimming. Trimming should only be done by a qualified
machine shop that has experience in this operation. Contact
your local Carrier representative for a recommended machine
shop.
CAUTION
After trimming, the impeller MUST be balanced. Failure to
balance trimmed impellers can result in excessive vibration, noise, and premature bearing failure.
Impeller trimming has the added benefit of maximum bhp
(brake horsepower) savings, which can recover the cost
incurred by performing the impeller trimming.
PUMP VFD — Pumps may be ordered with a variable frequency drive (VFD) for speed control.
SENSORLESS CONTROL (CLOSED LOOP) — ACTIVE
SETUP 1 — The VFD provided with the pump from the factory is configured for sensorless control. Default set points are
entered for the unit according to nominal tonnage of the unit.
Table 8 shows the settings from the factory. For details on operating the drive display, see the pump installation and operation manual, and for more detailed information on the drive,
see IVS 102 Operating Instructions. These manuals are supplied in the control box of the chiller.
The following set points should be verified or modified for
(40% of Hd)
When changing set points, assure values are within the
pump curve for the pump provided with the unit.
Minimum speed for the pump is set at 50 Hz, Parameter
4-12. This may be changed as long as the corresponding flow
rate meets the minimum flow requirement for the chiller.
REMOTE SENSOR (CLOSED LOOP) — ACTIVE
SETUP 2 — The drive may be set up to use a remote sensor
instead of sensorless pump control. For a remote sensor control change Active Setup on the drive from 1 to 2, Parameter
0-10. The drive will read a 0-10vdc or a 0/4-20 mA signal
from the sensor. Switch S2-01 must be set to Off (default setting) for 0-10 vdc or On for 0/4-20 mA. The switch is located
behind the display. The cover must be removed and the display
will snap off to access this switch.
The set point is defined by Parameter 20-21, Setpoint 1.
This is a percentage of the maximum signal from the sensor.
The default is 80%.
REMOTE CONTROLLER (OPEN LOOP) — ACTIVE
SETUP 3 — Drive may be controlled by external sources. For
a remote control of the drive change Active Setup on the drive
to 3, Parameter 0-10. An input signal can used to control the
drive speed. Input signal may be 0-10 vdc or 0/4-20 mA. The
setup is the same as a remote sensor.
A BACnet card is also included with the drive. For
BACnet, use Setup 3. The communication settings are in section 8 of the drive parameters. See drive manual for details.
Table 8 — Default Settings for Sensorless Control — Setup 1
SINGLE PUMP
Unit Size (tons)60,7080, 90, 100110,120,130150160, 170, 190
ft wc 12182238162036481418324610 20 28 38 10 18 26 36
Hd
gpm150200270340410
40%
ft wc 12182230381620364814183246202838182636
Hd
4380
3x3x8
4382
4x4x8
4380
3x3x6
4382
3x3x6
4380
3x3x8
DUAL PUMP
4382
4x4x8
4380
3x3x6
4382
4x4x6
4380
3x3x8
4382
4x4x8
4380
3x3x6
4382
4x4x6
4380
4x4x8
4x4x6
4382
4380
4x4x6
4382
6x6x6
4380
4x4x8
4382
4x4x6
4380
4x4x6
53
Page 54
PREPARATION FOR YEAR ROUND OPERATION — If
30RB060-130
0
10
20
30
40
50
60
0100200300400500600700
GPM
060, 070
080, 090, 100
110, 120, 130
(179.4kPa)
(149.5kPa)
(119.6kPa)
(89.7kPa)
(59.8kPa)
(29.8kPa)
6.312.618.925.231.537.844.2
L/s
dP (Feet)
Fig. 52 — 30RB060-130
Cooler Pressure Drop Curves
30RB150-190 and 30RB315A,B; 330A,B; 345A,B; 360A,B; 390A,B
0
10
20
30
40
50
60
02004006008001000
GPM
dP (Feet)
(179.4kPa)
(149.5kPa)
(119.6kPa)
(89.7kPa)
(59.8kPa)
(29.8kPa)
12.6 25.237.850.5
L/s
63.1
0.0
Fig. 53 — 30RB150-190 and 30RB315A,B; 345A,B;
360A,B; 390A,B Cooler Pressure Drop Curve
0
20
40
60
(179.4kPa)
(119.6kPa)
(59.8kPa)
10
(29.8kPa)
30
(89.7kPa)
50
(149.5kPa)
70
(209.3kPa)
30RB210-300
200
400600800
1000
12001400
GPM
12.6
25.2
37.850.5
L/s
63.175.788.3
dP (Feet)
0.0
0
Fig. 54 — 30RB210-300
Cooler Pressure Drop Curve
the unit is in operation year-round, add sufficient suitable
inhibited antifreeze solution such as propylene or ethylene
glycol to chilled water and heat reclaim to prevent freezing
under low-ambient temperature operating conditions. Consult
local water treatment specialist on characteristics of water and
recommended inhibitor.
IMPORTANT: Glycol anti-freeze solutions are highly
recommended since heater tapes provide no protection
in the event of a power failure.
If the unit is equipped with low ambient temperature head
pressure control, field-fabricated and field-installed wind baffles are required if the wind velocity is anticipated to be greater
than 5 mph (8 km/h). Two different baffles are required, one for
the control box end and one for the opposite end of the control
box. Wind baffles should be constructed with minimum
18-gage galvanized sheet metal or other suitable corrosionresistance material with cross breaks for strength. Use fieldsupplied screws to attach baffles to the corner posts of the
machine. Be sure to hem or turn a flange on all edges to eliminate sharp edges on the baffles.
WARNING
Disconnect all power to the unit before performing maintenance or service. Unit may automatically start if power is
not disconnected. Electrical shock and personal injury
could result.
CAUTION
To avoid damage to the refrigerant coils and electrical components, use extreme care when drilling screw holes and
screwing in fasteners.
Mount the smaller height baffle on the end of the control
box. It is recommended that the upper notches be used for
mounting the baffles. This reduces the risk of damaging the
coil while drilling a mounting hole. Loosen the upper corner
post bolts and slide the baffle under the bolt and washer. Tighten the bolts. Drill holes in the bottom of the flange of the baffle
and mount with two screws to secure the bottom of the baffle to
the corner post. Repeat the process for the opposite side. See
Fig. 57.
FREEZE PROTECTION — The 30RB units are provided
with a flow switch for chilled water to protect against freezing
situations that occur from no water flow. For freeze protection
of the chiller in case of power failure during subfreezing ambient temperatures, or in other cases where water temperature
falls below the freezing mark, other methods must be used. Appropriate concentrations of inhibited propylene or ethylene glycol or other suitable inhibited antifreeze solution should be
considered for chiller protection for both chilled water and heat
reclaim, where ambient temperatures are expected to fall below
32 F (0° C). Consult local water treatment specialist on characteristics of the system water and add a recommended inhibitor
to the chilled water. The Carrier warranty does not cover damage due to freezing.
54
Page 55
HEAT RECLAIM VESSEL PRESSURE DROP CURVES
30RB 60-110 TON
0
10
(29.8kPa)
20
(59.8kPa)
30
(89.7kPa)
40
(119.6 kPa)
50
(149.5kPa)
60
(179.4kPa)
0100200300400500600700
GPM
ft wg
L/s
0.006.3112.6218.9325.2431.5537.8544.16
a30-4822
Fig. 55 — 30RB060-110 Optional Heat Reclaim Pressure Drop Curves
a30-4823
Fig. 56 — 30RB120-190 Optional Heat Reclaim Pressure Drop Curves
that is not approved for heat exchanger duty. Only use appropriately inhibited glycols, concentrated to provide adequate
protection for the temperature considered.
1. Use an electric heater tape for the external piping, if unit
will be exposed to freezing temperatures.
2. Ensure that power is available to the chiller at all times,
even during the off-season, so that the pump, cooler heaters and heat reclaim have power. Also make sure that the
piping tape heaters have power.
3. On units with pump packages, a heater is supplied with
the hydronic package that will protect this section from
freezing in outdoor-air temperatures down to –20 F
(–29 C), except in the case of a power failure. If the pump
will be subjected to freezing temperatures, steps must be
taken to prevent freeze damage. If the pump will not be
used during this time, it is recommended to drain the
pump and hydronic package and these components are
back-flushed with inhibited glycol. Otherwise, a glycolwater solution should be considered as the heat transfer
fluid. Drains are located on the pump(s) and suction
guide/strainer for units with hydronic kits. Units without
hydronic kits have a drain mounted on the bottom of the
heat exchanger near the leaving water connection of the
heat exchanger. The Carrier warranty does not cover
damage due to freezing.
4. Cooler heaters that will protect components down to
–20 F (–28.9 C) can be ordered as a factory-installed option. It should be noted that these heaters will not protect
the cooler from freezing in the event of a power failure.
The Carrier warranty does not cover damage due to
freezing.
5. Units with the heat reclaim option are supplied with a
heater to protect the reclaim condenser down to 0° F
(–18 C). If the unit controls the heat reclaim circulator
pump and or valves to allow flow through the condenser,
freeze protection to –20 F (–29 C) is provided. Again, it
should be noted that the heaters and pump control will not
protect the reclaim condenser from freezing in the event
of a power failure. The Carrier warranty does not cover
damage due to freezing.
PREPARATION FOR WINTER SHUTDOWN — If the unit
is not operational during the winter months, at the end of cooling season, perform the following:
CAUTION
Failure to remove power before draining heater equipped
coolers, heat reclaim condensers and hydronic packages
can result in heater tape and insulation damage.
CHILLED WATER SYSTEM
1. If the unit has an optional heater on the cooler and the
cooler will not be drained, do not shut off power disconnect during off-season shutdown. If the unit has an optional heater on the cooler and the cooler will be drained,
open the circuit breaker for the heater, CB-HT or shut off
power during off-season shutdown.
2. Draining the fluid from the system is highly recommended. If the unit is equipped with a hydronic package, there
are additional drains in the pump housing and strainer
56
that must be opened to allow for all of the water to drain.
Page 57
3. Replace the drain plug and add 2 gallons (7.6 liters) of a
suitable corrosion-inhibited anti-freeze solution such as
propylene glycol to the cooler to prevent freezing of any
remaining water in system. Antifreeze can be added
through the vent on top of cooler. If the unit has a hydronic pump package, the pump must also be treated in the
same manner.
4. Open one of the thermistor connections to allow air to
escape the vessel and the anti-freeze to enter.
5. At the beginning of the next cooling season, be sure that
there is refrigerant pressure on each circuit before
refilling cooler, add recommended inhibitor, and reset the
CB-HT (circuit breaker heater) (if opened) or restore
power.
HEAT RECLAIM SYSTEM — At the end of each cooling
season the fluid should be drained from the system. However,
due to the heat reclaim condenser circuiting, some fluid will remain in the condenser after draining. To prevent freeze-up
damage to the condenser tubes perform the following
procedure.
1. If the heat reclaim condenser will not be drained do not
shut off power disconnect during off-season shutdown. If
the condenser will be drained, deenergize the heaters to
prevent damage and possible safety hazards when draining, or when there is no liquid in the system. Open the
condenser heater circuit breaker, CB-CDH7 to deenergize
the heaters. Drain the fluid from the system.
2. Isolate the condenser from the rest of the system with water shut off valves.
3. Completely fill the condenser with an appropriate
amount of inhibited ethylene glycol solution (or other
suitable corrosion-inhibitive antifreeze) for 15 F
(8.3 C) below the expected low ambient conditions.
4. Leave the condenser filled with the antifreeze solution for
the winter, or drain if desired. Be sure to deenergize heaters as explained in Step 1 to prevent damages. Use an approved method of disposal when removing the antifreeze
solution.
5. At the beginning of the next cooling season, be sure that
there is refrigerant pressure on each circuit before refilling the condenser circuit, add recommended inhibitor and
reset the CB-CDHT (if opened) to restore power.
Step 6 — Make Electrical Connections
WARNING
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 disconnect locations to alert others not to restore power until work
is completed.
POWER SUPPLY — The electrical characteristics of the
available power supply must agree with the unit nameplate
rating. Supply voltage must be within the limits shown.
Some units have options for multiple power connections.
See Table 9 and Fig. 58 for elecrical connection information.
See Tables 10A-14 for electrical requirements.
IMPORTANT: Operating unit on improper supply
voltage or with excessive phase imbalance constitutes
abuse and may adversely affect Carrier warranty.
POWER WIRING — All power wiring must comply with
applicable local and national codes. Install field-supplied
branch circuit fused disconnect per NEC of a type that can be
locked OFF or OPEN. Disconnect must be within sight and
readily accessible from the unit in compliance with NEC
Article 440-14. In the power box,
power entry. The holes will need to be enlarged to accept the
appropriate conduit. NEC also requires all conduits from a
conditioned space to the power box(es) be sealed to prevent
airflow and moisture into the control box.
Duplex units require at least two separate power supplies, at
least one for each module, depending on the power supply
option ordered.
General Wiring Notes:
1. The control circuit does NOT require a separate power
source. A step-down transformer from the main threephase power supply obtains control circuit power. Be sure
that the appropriate connection tap is connected on all
transformers for the supply voltage. Up to three terminal
blocks are provided for field-wired control devices.
2. Cooler heat reclaim condenser and pump heaters (if factory installed) are wired in the control circuit so they are
operable as long as the main power supply to the unit is
ON. A factory-installed and set overload device protects
them.
NOTE: The field-supplied disconnect should never be off
except when unit is being serviced or is to be down for a prolonged period, in which case the cooler and heat reclaim condenser should be drained if not properly protected.
3. Power entry depends on the size and power entry option
ordered.
4. Maximum field wire sizes allowed by lugs on terminal
block/non-fused disconnect are listed in Tables 10 and 11.
5. Terminals for field power supply are suitable for copper
conductors. Insulation must be rated 75 C minimum.
IMPORTANT: To ensure power to the heaters, make
sure power to the unit is always on (except during service or a prolonged shutdown).
7
/8 in. holes are provided for
CAUTION
Proper rotation of condenser fan(s) and pump(s) MUST be
verified before pumps or compressors are started. Consult
the Controls, Start-Up, Operation, Service and Troubleshooting guide provided with 30RB060-390 units for correct procedure. Improper pump rotation can cause
permanent damage to pump impeller and housing. If
pump(s) have been removed for trimming, verify wiring is
reconnected in the original manner.
CONTROL POWER — Control power is obtained from the
main power supply and does NOT require a separate source. A
toggle switch (marked SW2 on the unit label diagram and by
the switch) allows the control circuit to be manually
disconnected when necessary. Cooler heat reclaim condenser
and pump heaters (if installed) are in an inoperable state when
this switch is in the Off position.
IMPORTANT: For 208-v systems, the connection tap
for all transformers must be changed. The factory
default setting is for 230-v. Failure to connect to the
proper tap may result in unreliable operation.
FIELD CONTROL OPTION WIRING — Install field control wiring options. See Fig. 58 and 59. Some options, such as
4 to 20 mA demand limit that requires the energy management
module, may require that accessories be installed first if not
factory installed for terminal connections.
57
Page 58
DUAL CHILLER CONTROL OPTION — If the dual chiller
algorithm is used and the machines are installed in parallel, an
additional chilled water sensor must be installed for each
chiller. For 30RB315-390 units, a factory-supplied thermistor
and well are shipped in the control box of each. Install the well
in the common leaving water header. See Fig 34. Do not relocate the chiller’s leaving water thermistors. They must remain
in place for the unit to operate properly.
For the non-modular units, an accessory kit, part no.
00EFN900044000A, is available. This kit includes all parts
necessary for dual chiller control.
The thermistor well is a
1
/4 in. NPT fitting for securing the
well in the piping. The piping must be drilled and tapped for
Once the well is inserted, install the thermistors. Insert the
thermistor into the well until the O-ring reaches the well body.
Use the nut on the thermistor to secure the thermistor in place.
Once the thermistor is in place, it is recommended that a
thermistor wire loop be made and secured with a wire tie to the
chilled water pipe. This will aid in thermistor retention in the
well. See Fig. 60. Attach connector (part no. HY06AM016) to
thermistor lead. Plug connector into MBB J6-CH-3.
For 30RB315-390 units, as well as all units using the dual
chiller algorithm, a Carrier Comfort Network
must be connected between the two modules. See the
Carrier Comfort Network Communication Bus Wiring section
on page 70 for additional information.
the well. Select a location that will allow for removal of the
thermistor without any restrictions. See Fig. 60 and 61.
Table 9 — Control and Power Connections, 30RB060-390
30RB UNIT SIZEVOLTAGEELECTRICAL OPTIONCONNECTIONS
Single PointCircuit 1Combination
060,070
080-120
130-190,
315A-390A,
315B-390B
210, 225
250-300
*Dual point connection is not available when non-fused disconnect
option is selected.
†Single point connection not available.
1. FACTORY WIRING IS IN ACCORDANCE WITH UL 1995 STANDARDS.FIELD MODIFICATIONS
OR ADDITIONS MUST BE IN COMPLIANCE WITH ALL APPLICABLE CODES.
2. WIRING FOR MAIN FIELD SUPPLY MUST BE RATED 75C MINIMUM. USE COPPER FOR ALL UNITS.
INCOMING WIRE SIZE RANGE FOR THE TERMINAL BLOCK IS #4 AWG TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA UP TO 599.9 AMPS IS 3/0 TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA FROM 600 TO 799.9 AMPS IS 1/0 TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA FROM 800 TO 1199.9 AMPS IS 250 KCMIL TO 500 KCMIL.
3. TERMINALS 9 AND 10 OF TB5 ARE FOR FIELD EXTERNAL CONNECTIONS FORREMOTE ON-OFF.
THE CONTACTS MUST BE RATED FOR DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A
24VAC LOAD UP TO 50 MA.
4. TERMINALS 1 AND 2 OF TB5 ARE FOR EXTERNAL CONNECTIONS OF CHILLED WATER PUMP INTERLOCK.
THE CONTACTS MUST BE RATED FOR DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A
24VAC LOAD UP TO 50 MA.
5. TERMINALS 11 AND 13 OF TB5 ARE FOR CONTROL OF CHILLED WATER PUMP1 (PMP1) STARTER.
TERMINALS 13 AND 15 OF TB5 ARE FOR CONTROL OF CHILLED WATER PUMP2 (PMP2) STARTER.
THE MAXIMUM LOAD ALLOWEDFOR THECHILLED WATER PUMP RELAY IS 5 VA SEALED, 10
VA
INRUSH AT 24V. FIELD POWER SUPPLY IS NOTREQUIRED.
6. FOR CONTROL OF CHILLED WATER PUMPS, A SET OF NORMALLY OPEN CONTACTS RATED FOR DRY CIRCUIT APPLICATION
MUST BE SUPPLIED FROMFIELD SUPPLIED PUMP STARTER RELAY. CONNECT CONTACTSTO VIOLET AND PINK WIRES IN
HARNESS FROM MAIN BASE BOARD CHANNEL 18. WIRES IN HARNESS ARE MARKEDPMP1-13 AND PMP1-14.
7. TERMINALS 12 AND 13 OF TB5 ARE FOR A ALARM RELAY. THE MAXIMUM LOAD ALLOWED FOR THE
ALARM RELAY IS 10 VA SEALED, 25 VA INRUSH AT 24V. FIELD POWER SUPPLY ISNOT REQUIRED.
8. MAKE APPROPRIATE CONNECTIONS TO TB6 ASSHOWN FOR ENERGY MANAGEMENT BOARD OPTIONS. THE
CONTACTSFOR OCCUPANCY OVERRIDE, DEMAND LIMIT AND ICE DONE OPTIONS MUST BE RATED FOR
DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A 24VAC LOAD UP TO 50 MA.
9. J3 - 24 AND 25 OF EMM BOARD ARE FOR RUN RELAY AND SHUTDOWN RELAY. THE MAXIMUM
LOAD ALLOWED FOR THERUN AND SHUTDOWN RELAY IS 10 VA SEALED, 25 VA INRUSH AT 24V.
FIELD POWER SUPPLY IS NOTREQUIRED.
ICE DONE
DEMAND LIMIT STEP 2
OCCUPANCY OVERRIDE
DUAL SETPOINT
12
3
456
7
8
9
10
11
12
13
14
15
TB5
TB6
12
3
456
7
8
9
10
11
12
13
14
15
EMM
FIOP/
ACCESSORY
REMOTE
ON/OFF
SEE
NOTE 3
A
PMP2
PMP1
+
COM
-
SHLD
DATA COM PORT
GROUND-FAULT
CIRCUIT-INTERRUPTER
OUTLET
(4 AMPS MAX.)
TRAN2
SECONDARY
115V
BLK
WHT
RESET
TEST
GRN-YEL
GFI-CO
FIOP/ACCESSORY
BRASS SCREW
SILVER SCREW
WHT
FU4
X3
X1
LOAD
LINE
SILVER SCREW
PMPI
XF
MLV-B
MLV-C
CAPACITY
LIMIT
SETPOINT
RESET
8
T8
SPACE
TEMP
(10K)
J6
R
4
3
CH
2
J4
+
2
1
CH
11A
J4
+
6
5
CH
8
J4
+
6
5
CH
9
EMM BOARD
DISPLAY LOCATION
DEMAND LIMIT STEP 1
4-20 MA
SIGNAL
GENERATOR
4-20 MA
SIGNAL
GENERATOR
+
-
GRN
BLK
REMOTE LOCKOUTSWITCH
J4
+
4
3
CH
10
1/2 WATT 250
MLV-A
DISPLAY LOCATION
MAIN POWERENTRANCE CIRCUIT 1
060-120 ALL VOLTAGES
130-190 DUAL & SINGLE POINT 208/230V
210-300 DUAL POINT 208/230V
MAIN POWERENTRANCE CIRCUIT 2
060-120 DUAL POINT,ALL VOLTAGES
130-190 DUAL POINT WITH DISCONNECT OPTION,380/460/575V
210,225 DUAL POINT WITH DISCONNECT OPTION,380/460/575V
MAIN POWERENTRANCE CIRCUIT 1
130-300 DUAL & SINGLE POINT,380/460/575V
MAIN POWERENTRANCE CIRCUIT 2
130-190 DUAL POINT,208/230V
130-190 DUAL POINT WITH TERMINAL BLOCKS,380/460/575V
210,225 DUAL POINT WITH TERMINAL BLOCKS,380/460/575V
R
S
5V
CH
6
R
S
5V
CH
5
J7B
J7A
GRA
GRA
RED
RED
BLU
BLU
ORN
ORN
VIO
GRN
VIO
BLK
TYPICAL CONTROL BOX LOCATIONS
AND MAIN POWERENTRY
FIELD CONTROL
WIRING ENTRY
FIELD CONTROL
WIRING ENTRY
MAIN POWERENTRANCE CIRCUIT 2
210-300 DUAL POINT,208/230V
250-300 DUAL POINT,460/575V
080-300 230V
130-300 380/460/575V
060,070 230V
060-120 380/460/575V
+
-
FEB
COMBICOMBI
OROR
POWER-LPOWER-L
PEB 1
PEB2
1/2 WATT 250
+
+
CH
25
CH
24
J3
4
3
2
1
RUN
R
SHD
R
TB5
13
C
A
B
SW2
ON/OFF
Network
Wiring
Network COM
Net+
SHIELD
Net-
BAS Port
UPC
Open
TB3
(SEE NOTE #10)
DUPLEX UNITS
SIZESTD UNIT
315A,B
330B
160
330A
345A,B
360B
170
360A
390A,B
190
LEGEND:
A - ALARM
PMPI- CHILLED WATER PUMP INTERLOCK
CWP - CHILLED WATER PUMP
EMM - ENERGY MANAGEMENT
SHD R- SHUTDOWN RELAY
RUN R- RUN RELAY
MLV - MINIMUM LOAD VALVE
TB - TERMINAL BLOCK
FIELD POWER WIRING
FIELD CONTROL WIRING
FACTORY INSTALLED WIRING
a30-5708
Fig. 58 — Control and Power Wiring Schematic, 30RB060-390
59
Page 60
TERMINAL BLOCK
FIELD POWER SUPPLY
GROUND
(SEE NOTE #2)
21
11
DISCONNECT/BRANCH CIRCUIT
PROTECTION PER NEC
22
12
23
13
EQUIP
GND
TB1A (STANDARD POWER ENTRY)
TB1B/TB1C OPTIONAL DUAL POINT POWER ENTRY
NON-FUSED DISCONNECT
FIELD POWER SUPPLY
GROUND
(SEE NOTE #2)
DISCONNECT/BRANCH CIRCUIT
PROTECTION PER NEC
EQUIP
GND
CB1A ((STANDARD DISCONNECT POWER ENTRY)
CB1B (OPTIONAL DUAL POWER ENTRY POINT FOR DISCONNECT)
1
2
3
NOTES:
1. FACTORY WIRING IS IN ACCORDANCE WITH UL 1995 STANDARDS. FIELD MODIFICATIONS
OR ADDITIONS MUST BE IN COMPLIANCE WITH ALL APPLICABLE CODES.
2. WIRING FOR MAIN FIELD SUPPLY MUST BE RATED 75C MINIMUM. USE COPPER FOR ALL UNITS.
INCOMING WIRE SIZE RANGE FOR THE TERMINAL BLOCK IS #4 AWG TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA UP TO 599.9 AMPS IS 3/0 TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA FROM 600 TO 799.9 AMPS IS 1/0 TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA FROM 800 TO 1199.9 AMPS IS 250 KCMIL TO 500 KCMIL.
3. TERMINALS 9 AND 10 OF TB5 ARE FOR FIELD EXTERNAL CONNECTIONS FOR REMOTE ON-OFF.
THE CONTACTS MUST BE RATED FOR DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A
24VAC LOAD UP TO 50 MA.
4. TERMINALS 1 AND 2 OF TB5 ARE FOR EXTERNAL CONNECTIONS OF CHILLED WATER PUMP INTERLOCK.
THE CONTACTS MUST BE RATED FOR DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A
24VAC LOAD UP TO 50 MA.
5. TERMINALS 11 AND 13 OF TB5 ARE FOR CONTROL OF CHILLED WATER PUMP1 (PMP1) STARTER.
TERMINALS 13 AND 15 OF TB5 ARE FOR CONTROL OF CHILLED WATER PUMP2 (PMP2) STARTER.
THE MAXIMUM LOAD ALLOWED FOR THE CHILLED WATER PUMP RELAY IS 5 VA SEALED, 10 VA
INRUSH AT 24V. FIELD POWER SUPPLY IS NOT REQUIRED.
6. FOR CONTROL OF CHILLED WATER PUMPS, A SET OF NORMALLY OPEN CONTACTS RATED FOR DRY CIRCUIT APPLICATION
MUST BE SUPPLIED FROM FIELD SUPPLIED PUMP STARTER RELAY. CONNECT CONTACTS TO VIOLET AND PINK WIRES IN
HARNESS FROM MAIN BASE BOARD CHANNEL 18. WIRES IN HARNESS ARE MARKED PMP1-13 AND PMP1-14.
7. TERMINALS 12 AND 13 OF TB5 ARE FOR A ALARM RELAY. THE MAXIMUM LOAD ALLOWED FOR THE
ALARM RELAY IS 10 VA SEALED, 25 VA INRUSH AT 24V. FIELD POWER SUPPLY IS NOT REQUIRED.
8. MAKE APPROPRIATE CONNECTIONS TO TB6 AS SHOWN FOR ENERGY MANAGEMENT BOARD OPTIONS. THE
CONTACTS FOR OCCUPANCY OVERRIDE, DEMAND LIMIT AND ICE DONE OPTIONS MUST BE RATED FOR
DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A 24VAC LOAD UP TO 50 MA.
9. J3 - 24 AND 25 OF EMM BOARD ARE FOR RUN RELAY AND SHUTDOWN RELAY. THE MAXIMUM
LOAD ALLOWED FOR THE RUN AND SHUTDOWN RELAY IS 10 VA SEALED, 25 VA INRUSH AT 24V.
FIELD POWER SUPPLY IS NOT REQUIRED.
10. 250-OHM ½-WATT RESISTOR IS FIELD-SUPPLIED.
DUPLEX UNITS
SIZESTD UNIT
315A,B
330B
160
330A
345A,B
360B
170
360A
390A,B
190
LEGEND:
A - ALARM
PMPI- CHILLED WATER PUMP INTERLOCK
CWP - CHILLED WATER PUMP
EMM - ENERGY MANAGEMENT
SHD R- SHUTDOWN RELAY
RUN R- RUN RELAY
MLV - MINIMUM LOAD VALVE
TB - TERMINAL BLOCK
FIELD POWER WIRING
FIELD CONTROL WIRING
FACTORY INSTALLED WIRING
a30-5709
Fig. 58 — Control and Power Wiring Schematic, 30RB060-390 (cont)
60
Page 61
(–)
(+)
Fig. 59 — Optional Heat Reclaim Control Typical Field Wiring
NOTES:
1. Terminals 1 and 2 of TB7 are for external connection of heat
reclaim condenser water valve.
2. Terminals 3 and 4 of TB7 are for external connection of fieldsupplied heat reclaim water pump control relay.
3. The maximum load allowed for the condenser pump relay is
5 va sealed, 10 va inrush at 24 v.
4. Terminals 14 and 15 of TB7 are for external connection of
heat reclaim remote enable switch.
5. Terminals 5 through 13 of TB7 are for the connection of
factory-installed solenoid valve control wiring.
LEGEND
Field Control Wiring
Factory-Installed Wiring
a30-4742
WIRE TIE
LOOP
THERMISTOR WIRE
AND SECURE
TO CHILLED WATER PIPE
INSERT THERMISTOR UNTIL
O-RING MEETS THE
THERMISTOR WELL BODY.
Fig. 60 — Dual Leaving Water Thermistor
(Part No. 30RB660036)
5/8 in. HEX
6" MINIMUM
CLEARANCE FOR
THERMISTOR
REMOVAL
1.188 in.
2.315 in.
1/4-18 NPT
Fig. 61 — Dual Leaving Water Thermistor Well
(Part No. 00PPG000008000A)
61
Page 62
208/230
460
575 v only
Table 10A — 30RB060-190 Electrical Data — Single Point Units
UNIT 30RB
060
070
080
090
100
110
120
130
150
160
170
190
AWG — American Wire GageMOCP — Maximum Overcurrent Protection
ICF — Instantaneous Current Flow XL— Across-the-Line Start
MCA — Minimum Circuit Amps
NOTES:
1. Units are suitable for use on electrical systems where voltage supplied to the unit
terminals is not below or above the listed minimum and maximum limits. Maximum
allowable phase imbalance is: voltage, 2%; amps 10%.
2. All units or modules have single point primary power connection. (Each unit or module
requires its own power supply.) Main power must be supplied from a field-supplied
disconnect.
3. Cooler heater is wired into the control circuit so it is always operable as long as the
power supply disconnect is on, even if any safety device is open.
4. For MCA that is less than or equal to 380 amps, 3 conductors are required.
For MCA between 381-760 amps, 6 conductors are required.
For MCA between 761-1140 amps, 9 conductors are required.
For MCA between 1141-1520 amps, 12 conductors are required.
Calculation of conductors required is based on 75 C copper wire.
UNIT VOLTAGENO HYDRONIC PACKAGE3 HP PUMP, 1750 RPM5 HP PUMP, 1750 RPM
5. Wiring for main field supply must be rated 75 C minimum. Use copper for all units.
a. Incoming wire size range for the terminal block is no. 4 AWG to 500 kcmil.
b. Incoming wire size range of non-fused disconnect with MCA up to 599.9 amps is
3/0 to 500 kcmil.
c. Incoming wire size range of non-fused disconnect with MCA from 600 to
799.9 amps is 1/0 to 500 kcmil.
d. Incoming wire size range of non-fused disconnect with MCA from 800 to
1199.9 amps is 250 kcmil to 500 kcmil.
6. Hydronic pump packages are not available as a factory-installed option for units
30RB210-390.
7. Power draw includes both crankcase heaters and cooler heaters (where used). Each
compressor has a crankcase heater which draws 56 watts of power. Units ordered with
the cooler heater option have 1 (060-150) or 2 (160-300) cooler heaters, 825 watts
each.
Rec Fuse
MCAMOCPICF
Size
Rec Fuse
Size
1218
62
Page 63
208/230
460
575 v only
Table 10A — 30RB060-190 Electrical Data — Single Point Units (cont)
UNIT 30RB
060
070
080
090
100
110
120
130
150
160
170
190
AWG — American Wire GageMOCP — Maximum Overcurrent Protection
ICF — Instantaneous Current Flow XL— Across-the-Line Start
MCA — Minimum Circuit Amps
NOTES:
1. Units are suitable for use on electrical systems where voltage supplied to the unit
terminals is not below or above the listed minimum and maximum limits. Maximum
allowable phase imbalance is: voltage, 2%; amps 10%.
2. All units and modules have single point primary power connection. (Each unit or module requires its own power supply.) Main power must be supplied from a field-supplied
disconnect.
3. Cooler heater is wired into the control circuit so it is always operable as long as the
power supply disconnect is on, even if any safety device is open.
4. For MCA that is less than or equal to 380 amps, 3 conductors are required.
For MCA between 381-760 amps, 6 conductors are required.
For MCA between 761-1140 amps, 9 conductors are required.
For MCA between 1141-1520 amps, 12 conductors are required.
Calculation of conductors required is based on 75 C copper wire.
UNIT VOLTAGE7.5 HP PUMP, 1750/3450 RPM10 HP PUMP, 3450 RPM15 HP PUMP, 3450 RPM
5. Wiring for main field supply must be rated 75 C minimum. Use copper for all units.
a. Incoming wire size range for the terminal block is no. 4 AWG to 500 kcmil.
b. Incoming wire size range of non-fused disconnect with MCA up to 599.9 amps is
3/0 to 500 kcmil.
c. Incoming wire size range of non-fused disconnect with MCA from 600 to
799.9 amps is 1/0 to 500 kcmil.
d. Incoming wire size range of non-fused disconnect with MCA from 800 to
1199.9 amps is 250 kcmil to 500 kcmil.
6. Hydronic pump packages are not available as a factory-installed option for units
30RB210-390.
7. Power draw includes both crankcase heaters and cooler heaters (where used). Each
compressor has a crankcase heater which draws 56 watts of power. Units ordered with
the cooler heater option have 1 (060-150) or 2 (160-300) cooler heaters, 825 watts
each.
Rec Fuse
Size
MCAMOCPICF
Rec Fuse
Size
63
1218
Page 64
Table 10B — 30RB210-390 Electrical Data — Single Point Units
208/230
460
575 v only
UNIT 30RB
210
225
250
275
300
315A
315B
330A
330B
345A
345B
360A
360B
390A
390B
AWG — American Wire GageMOCP — Maximum Overcurrent Protection
ICF — Instantaneous Current Flow XL— Across-the-Line Start
MCA — Minimum Circuit Amps
NOTES:
1. Units are suitable for use on electrical systems where voltage supplied to the unit
terminals is not below or above the listed minimum and maximum limits. Maximum
allowable phase imbalance is: voltage, 2%; amps 10%.
2. All units or modules have single point primary power connection. (Each unit or module
requires its own power supply.) Main power must be supplied from a
field-supplied disconnect.
3. Cooler heater is wired into the control circuit so it is always operable as long as the
power supply disconnect is on, even if any safety device is open.
4. For MCA that is less than or equal to 380 amps, 3 conductors are required.
For MCA between 381-760 amps, 6 conductors are required.
For MCA between 761-1140 amps, 9 conductors are required.
For MCA between 1141-1520 amps, 12 conductors are required.
Calculation of conductors required is based on 75 C copper wire.
UNIT VOLTAGENO HYDRONIC PACKAGE3 HP PUMP, 1750 RPM5 HP PUMP, 1750 RPM
5. Wiring for main field supply must be rated 75 C minimum. Use copper for all units.
a. Incoming wire size range for the terminal block is no. 4 AWG to 500 kcmil.
b. Incoming wire size range of non-fused disconnect with MCA up to 599.9 amps is
3/0 to 500 kcmil.
c. Incoming wire size range of non-fused disconnect with MCA from 600 to
799.9 amps is 1/0 to 500 kcmil.
d. Incoming wire size range of non-fused disconnect with MCA from 800 to
1199.9 amps is 250 kcmil to 500 kcmil.
6. Hydronic pump packages are not available as a factory-installed option for units
30RB210-390.
7. Power draw includes both crankcase heaters and cooler heaters (where used). Each
compressor has a crankcase heater which draws 56 watts of power. Units ordered with
the cooler heater option have 1 (060-150) or 2 (160-300) cooler heaters, 825 watts
each.
Rec Fuse
Size
MCAMOCPICF
Rec Fuse
Size
64
Page 65
Table 11A — 30RB060-190 Electrical Data — Dual Point Units
208/230
460
575 v only
30RB
UNIT
SIZE
060
070
080
090
100
110
120
130
150
160
170
190
AWG — American Wire Gage
ICF— Instantaneous Current Flow (Ckt1/Ckt2)
MCA — Minimum Circuit Amps (Ckt1/Ckt2)
MOCP — Maximum Overcurrent Protection (Ckt1/Ckt2)
XL— Across-the-Line Start
NOTES:
1. Units are suitable for use on electrical systems where voltage supplied to the unit
terminals is not below or above the listed minimum and maximum limits. Maximum
allowable phase imbalance is: voltage, 2%; amps 10%.
2. Control power is derived from main power. No separate control power connection is
required.
3. Cooler heater is wired into the control circuit so it is always operable as long as the
power supply disconnect is on, even if any safety device is open.
4. For MCA that is less than or equal to 380 amps, 3 conductors are required.
For MCA between 381-760 amps, 6 conductors are required.
For MCA between 761-1140 amps, 9 conductors are required.
For MCA between 1141-1520 amps, 12 conductors are required.
Calculation of conductors required is based on 75 C copper wire.
UNIT VOLTAGENO HYDRONIC PACKAGE3 HP PUMP, 1750 RPM5 HP PUMP, 1750 RPM
5. Wiring for main field supply must be rated 75 C minimum. Use copper for all units.
a. Incoming wire size range for the terminal block is no.4 AWG to 500 kcmil.
b. Incoming wire size range of non-fused disconnect with MCA up to 599.9 amps is
3/0 to 500 kcmil.
c. Incoming wire size range of non-fused disconnect with MCA from 600 to
799.9 amps is 1/0 to 500 kcmil.
d. Incoming wire size range of non-fused disconnect with MCA from 800 to
1199.9 amps is 250 kcmil to 500 kcmil.
6. Hydronic pump packages are not available as a factory-installed option for units
30RB210-390.
7. Power draw includes both crankcase heaters and cooler heaters (where used). Each
compressor has a crankcase heater which draws 56 watts of power. Units ordered with
the cooler heater option have 1 (060-150) or 2 (160-300) cooler heaters, 825 watts
each.
Fuse
Size
MCAMOCPICFRec
Fuse
Size
65
Page 66
208/230
460
575 v only
Table 11A — 30RB060-190 Electrical Data — Dual Point Units (cont)
30RB
UNIT
SIZE
060
070
080
090
100
110
120
130
150
160
170
190
AWG — American Wire Gage
ICF— Instantaneous Current Flow (Ckt1/Ckt2)
MCA — Minimum Circuit Amps (Ckt1/Ckt2)
MOCP — Maximum Overcurrent Protection (Ckt1/Ckt2)
XL— Across-the-Line Start
NOTES:
1. Units are suitable for use on electrical systems where voltage supplied to the unit
2. Control power is derived from main power. No separate control power connection is
3. Cooler heater is wired into the control circuit so it is always operable as long as the
4. For MCA that is less than or equal to 380 amps, 3 conductors are required.
UNIT VOLTAGE7.5 HP PUMP, 1750/3450 RPM10 HP PUMP, 3450 RPM15 HP PUMP, 3450 RPM
terminals is not below or above the listed minimum and maximum limits. Maximum
allowable phase imbalance is: voltage, 2%; amps 10%.
required.
power supply disconnect is on, even if any safety device is open.
For MCA between 381-760 amps, 6 conductors are required.
For MCA between 761-1140 amps, 9 conductors are required.
For MCA between 1141-1520 amps, 12 conductors are required.
Calculation of conductors required is based on 75 C copper wire.
SuppliedMCAMOCPICF
Min Max
XLXLXLXLXLXLXLXLXL
LEGEND
Rec Fuse
Size
MCAMOCPICF
5. Wiring for main field supply must be rated 75 C minimum. Use copper for all units.
a. Incoming wire size range for the terminal block is no. 4 AWG to 500 kcmil.
b. Incoming wire size range of non-fused disconnect with MCA up to 599.9 amps is
3/0 to 500 kcmil.
c. Incoming wire size range of non-fused disconnect with MCA from 600 to
799.9 amps is 1/0 to 500 kcmil.
d. Incoming wire size range of non-fused disconnect with MCA from 800 to
1199.9 amps is 250 kcmil to 500 kcmil.
6. Hydronic pump packages are not available as a factory-installed option for units
30RB210-390.
7. Power draw includes both crankcase heaters and cooler heaters (where used). Each
compressor has a crankcase heater which draws 56 watts of power. Units ordered with
the cooler heater option have 1 (060-150) or 2 (160-300) cooler heaters, 825 watts
each.
Rec Fuse
Size
MCAMOCPICF
Rec Fuse
Size
1218
66
Page 67
Table 11B — 30RB210-390 Electrical Data — Dual Point Units
208/230
460
575 v only
UNIT VOLTAGENO HYDRONIC PACKAGE3 HP PUMP, 1750 RPM5 HP PUMP, 1750 RPM
UNIT 30RB
AWG — American Wire Gage
ICF— Instantaneous Current Flow (Ckt1/Ckt2)
MCA — Minimum Circuit Amps (Ckt1/Ckt2)
MOCP — Maximum Overcurrent Protection (Ckt1/Ckt2)
XL— Across-the-Line Start
NOTES:
1. Units are suitable for use on electrical systems where voltage supplied to the unit
2. Control power is derived from main power. No separate control power connection is
3. Cooler heater is wired into the control circuit so it is always operable as long as the
4. For MCA that is less than or equal to 380 amps, 3 conductors are required.
terminals is not below or above the listed minimum and maximum limits. Maximum
allowable phase imbalance is: voltage, 2%; amps 10%.
required.
power supply disconnect is on, even if any safety device is open.
For MCA between 381-760 amps, 6 conductors are required.
For MCA between 761-1140 amps, 9 conductors are required.
For MCA between 1141-1520 amps, 12 conductors are required.
Calculation of conductors required is based on 75 C copper wire.
5. Wiring for main field supply must be rated 75 C minimum. Use copper for all units.
a. Incoming wire size range for the terminal block is no. 4 AWG to 500 kcmil.
b. Incoming wire size range of non-fused disconnect with MCA up to 599.9 amps is
3/0 to 500 kcmil.
c. Incoming wire size range of non-fused disconnect with MCA from 600 to
799.9 amps is 1/0 to 500 kcmil.
d. Incoming wire size range of non-fused disconnect with MCA from 800 to
1199.9 amps is 250 kcmil to 500 kcmil.
6. Hydronic pump packages are not available as a factory-installed option for units
30RB210-390.
7. Power draw includes both crankcase heaters and cooler heaters (where used). Each
compressor has a crankcase heater which draws 56 watts of power. Units ordered with
the cooler heater option have 1 (060-150) or 2 (160-300) cooler heaters, 825 watts
each.
CCN — Carrier Comfort Network®
LEN — Local Equipment Network
TB3
CARRIER COMFORT NETWORK
(CCN) COMMUNICATION BUS WIRING — The communication bus wiring is a
shielded, 3-conductor cable with drain wire and is field supplied and installed in the field.
The system elements are connected to the communication
bus in a daisy chain arrangement. The positive pin of each
system element communication connector must be wired to the
positive pins of the system elements on either side of it. This is
also required for the negative and signal ground pins of
each system element. Wiring connections for CCN should be
made at TB 3 (terminal block). Consult the CCN Contractor’s
Manual for further information. See Fig. 62.
NOTE: Conductors and drain wire must be 20 AWG
(American Wire Gage) minimum stranded, tinned copper.
Individual conductors must be insulated with PVC, PVC/
nylon, vinyl, Teflon*, or polyethylene. An aluminum/polyester
100% foil shield and an outer jacket of PVC, PVC/nylon,
chrome vinyl, or Teflon with a minimum operating temperature range of –4 F (–20 C) to 140 F (60 C) is required. Refer to
Table 15 for a list of manufacturers that produce CCN bus wiring that meets these requirements.
Table 15 — CCN Communication Bus Wiring
MANUFACTURER
Alpha1895—
AmericanA21451A48301
Belden8205884421
ColumbiaD6451—
ManhattenM13402M64430
Quabik6130—
Regular WiringPlenum Wiring
PART NUMBER
It is important when connecting to a CCN communication
bus that a color coding scheme be used for the entire network
to simplify the installation. It is recommended that red be used
for the signal positive, black for the signal negative, and white
for the signal ground. Use a similar scheme for cables containing different colored wires. At each system element, the shields
of its communication bus cables must be tied together. If the
communication bus is entirely within one building, the resulting continuous shield must be connected to a ground at one
point only. If the communication bus cable exits from one
building and enters another, the shields must be connected to
grounds at the lightning suppressor in each building where the
cable enters or exits the building (one point per building only).
To connect the unit to the network:
1. Turn off power to the control box.
2. Cut the CCN wire and strip the ends of the red (+), white
(ground), and black (–) conductors. Substitute appropriate colors for different colored cables.
3. Connect the red wire to (+) terminal on TB3 of the plug,
the white wire to COM terminal, and the black wire to the
(–) terminal.
4. The RJ14 CCN connector on TB3 can also be used, but is
only intended for temporary connection (for example, a
laptop computer running Service Tool).
IMPORTANT: A shorted CCN bus cable will prevent
some routines from running and may prevent the unit
from starting. If abnormal conditions occur, disconnect
the machine from the CCN network. If conditions
return to normal, check the CCN connector and cable.
Run new cable if necessary. A short in one section of
the bus can cause problems with all system elements
on the bus.
NON-CCN COMMUNICATION WIRING — The 30RB units
offer several non-CCN translators. Refer to the separate installation instructions for additional wiring steps.
Step 7 — Install Accessories — A number of
accessories are available to provide the following optional features (for details, refer to the Controls, Start-Up, Operation,
Service and Troubleshooting guide).
Energy management module is used for any of the follow-
ing types of temperature reset, demand limit and ice features:
• 4 to 20 mA inputs for cooling set point reset and capacity
limit (requires field-supplied 4 to 20 mA generator)
• 0 to 10 v output for percentage total capacity running
• 24 v discrete outputs for shutdown and running relays
• 10k space temperature input
• Discrete inputs for occupancy override, demand limit
switch 2 (step 1 demand limit is wired to the base board,
requires field-supplied dry contacts), remote lockout
switch and ice done switch (requires field-supplied dry
contacts)
NAVIGATOR™ DISPLAY — The Navigator display provides hand-held, mobile capability using easy to read 4-line
display. Keypad function is the same as the scrolling marquee
display. The Navigator display features a mounting magnet for
‘hands free’ service of components.
REMOTE ENHANCED DISPLAY — For applications
where remote monitoring of the equipment is required, the
remote enhanced display provides an indoor display capable of
monitoring any equipment on the Carrier Comfort Network
(CCN) bus. A CCN bus is needed.
LOW AMBIENT TEMPERATURE OPERATION — If
outdoor ambient operating temperatures below 32 F (0° C) are
expected, refer to separate installation instructions for low
ambient temperature operation using the low ambient temperature head pressure control accessory.
MINIMUM LOAD ACCESSORY — If minimum load accessory is required, contact your local Carrier representative for
more details. For installation details, refer to separate installation instructions supplied with the accessory package.
®
* Registered trademark of DuPont.
70
Page 71
UNIT SECURITY/PROTECTION ACCESSORIES — For
applications with unique security and/or protection requirements, several options are available for unit protection.
Compressor enclosures, security grilles and hail guards are
available. Contact your local Carrier representative for more
details. For installation details, refer to separate installation
instructions supplied with the accessory package.
COMMUNICATION ACCESSORIES — A number of communication options are available to meet any requirement.
Contact your local Carrier representative for more details. For
installation details, refer to separate installation instructions
supplied with the accessory package.
SERVICE OPTIONS — Two additional accessories are
offered to aid in servicing 30RB units, a ground fault convenience outlet (GFI-CO) and a remote service port. The remote
service port is a weather-proof enclosure with a communication
port to plug in the Navigator device. Contact your local Carrier
representative for more details. For installation details, refer to
separate installation instructions supplied with the accessory
package.
Refrigerant Circuit
LEAK TESTING — Units are shipped with complete operating charge of R-410A (see Tables 3A-4B) and should be under
sufficient pressure to conduct a leak test.
CAUTION
This system uses Puron® R-410A refrigerant, which has
higher pressures than R-22 and other refrigerants. No other
refrigerant can be used in this system. Failure to use gage
set, hoses, and recovery systems designed to handle Puron
refrigerant (R-410A) may result in equipment damage or
personal injury. If unsure about equipment, consult the
equipment manufacturer.
Perform a leak test to ensure that leaks have not developed
during unit shipment. Dehydration of the system is not required
unless the entire refrigerant charge has been lost. See Controls
and Troubleshooting literature for specific torque requirements
of refrigerant fittings. Repair any leak found using good refrigeration practice.
DEHYDRATION — Refer to Carrier Standard Service Techniques Manual, Chapter 1, Refrigerants, Sections 6 and 7 for
details. Do not use compressor to evacuate system.
REFRIGERANT CHARGE (Refer to Tables 3A-4B) —
Immediately ahead of filter drier in each circuit is a factoryinstalled liquid line service valve. Each valve has a
1
/4-in.
Schrader connection for charging liquid refrigerant. Refer to
Controls, Start-Up, Operation, Service and Troubleshooting
Guide for more information.
CAUTION
When charging, circulate water through the cooler at all
times to prevent freezing. Freezing damage is considered
abuse and may impair or otherwise negatively affect the
Carrier warranty.
CAUTION
DO NOT OVERCHARGE system. Overcharging results
in higher discharge pressure possible compressor damage,
and higher power consumption.
CAUTION
Refrigerant charge must be removed slowly to prevent loss
of compressor oil that could result in compressor failure.
BACnet* Communication Option Wiring —
The BACnet communication option uses the UPC Open controller. The controller communicates using BACnet on an MS/
TP network segment communications at 9600 bps, 19.2 kbps,
38.4 kbps, or 76.8 kbps.
Wire the controllers on an MS/TP network segment in a dai-
sy-chain configuration. Wire specifications for the cable are
22 AWG (American Wire Gage) or 24 AWG, low-capacitance,
twisted, stranded, shielded copper wire. The maximum length
is 2000 ft.
Install a BT485 terminator on the first and last controller on
a network segment to add bias and prevent signal distortions
due to echoing. See Fig. 63-65.
To wire the UPC Open controller to the BAS network:
1. Pull the screw terminal connector from the controller's
BAS Port.
2. Check the communications wiring for shorts and
grounds.
3. Connect the communications wiring to the BAS port’s
screw terminals labeled Net +, Net -, and Shield.
NOTE: Use the same polarity throughout the network
segment.
4. Insert the power screw terminal connector into the UPC
Open controller's power terminals if they are not currently connected.
5. Verify communication with the network by viewing a
module status report. To perform a module status report
using the BACview keypad/display unit, press and hold
the “FN” key then press the “.” Key.
To install a BT485 terminator, push the BT485, on to the
BT485 connector located near the BACnet connector.
NOTE: The BT485 terminator has no polarity associated with
it.
To order a BT485 terminator, consult Commercial Products
®
i-Vu
Open Control System Master Prices.
MS/TP WIRING RECOMMENDATIONS — Recommendations are shown in Tables 16 and 17. The wire jacket and UL
temperature rating specifications list two acceptable alternatives. The Halar specification has a higher temperature rating
and a tougher outer jacket than the SmokeGard specification,
and it is appropriate for use in applications where the user is
concerned about abrasion. The Halar jacket is also less likely to
crack in extremely low temperatures.
NOTE: Use the specified type of wire and cable for maximum
signal integrity.
* Sponsored by ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers).