Carrier 30HR Product data
The Flotronic™ Plus Chiller Combines These Extra-Performance Features for Increased Energy Savings:
• microprocessor-based control
system
• electronic expansion valve
• increased part-load efficiency
• multiple compressors — extra capacity steps
Features/Benefits
30HR,HS units are designed
for easy installation and
maintenance
Starting with installation, these machines keep costs low. Each is
completely factory engineered and
assembled to ensure a perfectly balanced refrigeration system that can be
installed with minimal field labor.
Only external fluid and power connections need to be completed at the
jobsite to make the fluid-cooled (30HR)
units operational. Condenserless (30HS)
units require the addition of a remote
condenser.
The 30HR model is a packaged
unit complete with cooler, condensers,
compressors, controls, refrigerant
and oil charge, and internal piping and
wiring. The 30HS unit is a condenserless version of the basic 30HR,
shipped with a holding charge of refrigerant and specially designed for applications with remote fluid- or
air-cooled, or evaporative type, condensers. All the easy-rigging 30H
series chillers are extremely trim and
compact. They can pass easily
through standard doorways, and require minimal floor space on the job.
Product
Data
30HR,HS
Model E
Reciprocating Liquid Chillers
Nominal Capacities:
70 to 160 Tons (250 to 560 kW)
Copyright 1994 Carrier Corporation Form 30HR,HS-4PD
Rated in accordance with
ARI Standard 590-92.
Additional features ensure smooth,
trouble-free operation. Compressors are mounted on heavy-duty spring
vibration isolators to minimize potentially damaging vibration transmission to the building structure. Sounddeadening mufflers dampen hot gas
pulsations. Servicing is made easy by
bolted, readily-accessible semi-hermetic
compressors that can be removed
with minimal field labor when adjustments or repairs are needed.
Flotronic™ Plus control system regulates the refrigerant cycle for optimum
efficiency
The 30HR,HS Flotronic Plus chillers
feature an electronic expansion valve
(EXV) operated by a microprocessorbased control system. The system
monitors safety functions and controls
unit capacity to maintain leaving
chilled fluid temperature. The microprocessor controls loading and unloading of compressors to match
changing cooling load requirements.
The control system consists of a
control box with a keypad and display
module, an EXV for each refrigeration circuit, and thermistors (temperature sensors) which provide analog
inputs to the microprocessor. The
control also operates a quick test program to check input and output signals to and from the microprocessor.
The 30HR,HS control system is self
contained and can operate on a
stand-alone basis if desired.
Components
The control box — All the
microprocessor-based controls required to optimize chiller operation
and protect it against unsafe conditions are contained in the control
box. This includes the processor module, relay module, EXV driver module, keypad and display module, relays,
and transformers. The box has a
hinged door for ready access.
The EXV driver — The driver positions the EXVs (based on commands
from the microprocessor) and
monitors the status of the oil and
refrigerant pressure switches.
The keypad and display module
— This module consists of a key-
pad with 11 function keys and 12 numeric keys (0 to 9,.,-)andan
alphanumeric 8-character liquid crystal
display. The module allows the operator to perform the following
functions:
• read and change set point
• configure unit
• run quick test unit checkout
• observe diagnostic information
• schedule chiller operation
Control features
Leaving fluid temperature control
with return compensation —
The rate at which the compressors
are turned on will depend on the difference between the actual leaving
fluid temperature and the set point,
the rate of change of leaving fluid
temperature, the return fluid temperature, and the number of compressor
stages on. The control is primarily
from leaving fluid temperature, and
the other factors are used as compensation. Because the control operates
from leaving fluid, the chiller is independent of cooling gpm (L/s). It is a
true droopless control.
Return temperature reset — The
control system is capable of handling leaving fluid temperature reset
based on return cooler temperature.
Because the change in temperature
through the cooler is a measure of the
building load, the return temperature
reset is in effect an average building load reset method. All sensors required to activate return reset are
standard with the unit.
Space and outdoor-air temperature reset — Space temperature
reset and outdoor-air temperature
reset allow for the reset of the leaving
fluid temperature based on an external temperature sensor. (Accessory
thermistor required.)
Energy management system reset
— Many energy management sys-
tems have the capability to transmit a
4 to 20 mA signal in proportion to
the desired leaving chilled-fluid set
point. The Flotronic Plus chillers have
the ability to recognize a proportioned signal to establish the reset
condition (field-installed components
are required).
Remote alarm — Upon initialization
of an alarm condition, an internal
contact will close to activate a signal
suitable for remote alarm activation.
Load shed (demand limit) — A
2-step demand limit can be programmed through the Flotronic Plus
controls. The control limits total power
draw of the unit by controlling the
number of steps of capacity operating
during the demand limiting period.
Pulldown control — Pulldown control is used to minimize compressor
usage and reduce the peak kW that
occurs at start-up, when the cooler
fluid temperature is very warm but the
load is small. When activated, this
feature limits the pulldown rate to
1° F (.56° C) per minute.
Unit checkout (quick test) — The
quick test feature allows determination
of the status (on or off) of various
Flotronic Plus control components (i.e.,
solenoid valves, compressors, and
unloaders). When the unit is in standby
mode, these steps will energize these
components and indicate whether
or not the components are operational.
Diagnostics — The Flotronic Plus
control system features extensive selfdiagnostics as standard. The display
will show a 2-digit diagnostic code,
and will scroll an explanation of the
code for failures that cause the unit to
shut down, terminate a reset option,
or use a default value as set point.
Time schedule — The Flotronic Plus
control system has an integral function that allows scheduling of the circulating pump and chiller operation
for up to 8 occupied/unoccupied periods per schedule, with 7 different
schedule days.
Table of contents
Page
Features/Benefits ........................................ 1-4
Model Number Nomenclature ............................... 4
Physical Data ........................................... 5-8
Accessories (Field Installed) ................................. 9
Base Unit Dimensions .................................... 10-12
Application Data ........................................13-16
Selection Procedure ....................................... 17
Performance Data .......................................18-28
Electrical Data ............................................29
Typical Field Control Wiring ..................................30
Controls ............................................... 31
Typical Piping and Wiring ................................... 32
Guide Specifications ......................................33-36
2
Increased part-load performance reduces operating
costs
Multiple compressors — Multiple
compressors on a refrigerant circuit further enhance part-load efficiency. This allows compressor to
operate fully loaded with 100% of
cooler and condenser surface active at
50% unit capacity, optimizing evaporating and condensing temperatures.
Since the chiller normally works at
part load for 97% of its operating
time, a substantial reduction in operating cost can be realized.
Suction cutoff unloading — Unloading on 06E compressors eliminates
unnecessary pumping of refrigerant
1—CompressorON Lights
2—Alarm Light
3—Keypad and Display
Module
4—RUN/STANDBY
Switch
5—Control CircuitFuses
6—Control Power ON
Light
gases during unloader operation. This
substantially reduces part-load power
consumption.
Liquid refrigerant subcooling —
Integral subcooler uses coldest
condenser fluid to increase system
capacity without extra horsepower.
CONTROL PANEL
–
KEYPAD AND DISPLAY
MODULE
SUBCOOLER
ELECTRONIC EXPANSION
VALVE (EXV)
06E COMPRESSOR
3
Features/Benefits (cont)
Safety features provide
protection and increase
reliability
Auto. lead/lag control — Control
balances operating hours between
refrigerant circuits.
Standby protection — If a malfunction or safety cutout occurs, these
2-circuit chillers have the capability for
standby operation. This benefit is
especially desirable in commercial applications where even brief equipment shutdowns can be extremely
costly.
Electronic expansion valve (EXV)
— The EXV is controlled to main-
tain approximately 20 F (11 C) refrigerant superheat entering the
compressor cylinders. (Ordinary thermostatic expansion valves typically
operate at 45 F [25 C] superheat
entering compressor cylinders.) Precise superheat control is obtained
through actuation of the 760-step,
long-stroke,
3
⁄4-in. (19 mm) valve
positioner to ensure optimized refrigerant metering. The accurate refrig-
erant metering provided by the EXV
reduces compressor motor temperature
and extends motor life.
Filter drier — Refrigerant circuits are
kept free of harmful moisture and
contaminants by a factory-installed
filter drier.
Crankcase heater — The compressor crankcase heater protects the
compressors against refrigerant migration and oil dilution.
Moisture-indicating sight glass —
Easy-to-read color indicator immediately shows moisture content of refrigerant system.
Oil pressure safety switch —
Safety switch shuts compressor(s) off if
the oil pressure drops below a safe
operating point.
Protection against single-phasing
— Manual reset, magnetic trip cir-
cuit breakers protect the compressor
motors against both overload and
single-phasing, and eliminate potential
problems before they become service headaches.
Motor overtemperature protection — Servicing dollars are saved
because the compressor motors are
thoroughly protected against overheating by quick-sensing elements.
Other safeties — Additional safeties
include: Loss of refrigerant charge
protection, low fluid flow protection,
low chilled fluid temperature protection, low and high superheat protection, low oil protection for each
compressor circuit, and low control voltage (to unit) protection.
Thermistors — Six thermistors are
used for temperature sensing inputs to
microprocessor (a seventh may be
used as a remote temperature sensor
for space or outdoor-air temperature reset):
• Cooler leaving and entering (return)
chilled fluid temperature control
• Cooler saturation temperatures —
Circuit A and Circuit B
• Return gas temperatures entering
compressor cylinder —Circuit A
and Circuit B
• Remote temperature sensor
(accessory)
Model number nomenclature
NOTE: Refrigerant 134a is not available for these units.
These units are listed with Underwriters’ Laboratories (UL) and Canadian Standards Association (CSA), and
these pressure vessels have ASME
(American Society of Mechanical
Engineers) certification.
UNDERWRITERS’
LABORATORIES
ASME
‘U’ STAMP
CANADIAN
STANDARDS
ASSOCIATION
4
Physical data — English
30HR,HS UNIT AND COMPRESSOR
UNIT 30HR,HS SIZE 070 080 090 100 110 120 140 160
APPROXIMATE OPERATING
WEIGHT (lb)*
HR 4760 4945 5070 6436 6575 6714 7355 7775
HS 3305 3360 3420 4360 4420 4480 5065 5175
REFRIGERANT (R-22)
OPERATING CHG (lb)†
HR 104 119 129 138 146 154 172 192
HS 15.3 15.3 15.3 21.0 21.0 21.0 27.0 27.0
COMPRESSOR 06E**
(Reciprocating,
Semi-Hermetic,
1750 rpm)
HR
Ckt A 2150 A150 6175 A150 6175 F175 6175 A150 6175 F175 6175 F175 6299 F175 6299 F299
Ckt B 6175 6175 6175 6175 A150 6175 A150 6175 F175 6299 F175 6299 F299
HS
Ckt A 2250 A250 6275 A250 6275 F275 6275 A250 6275 F275 6275 F275 6299 F275 6299 F299
Ckt B 6275 6275 6275 6275 A250 6275 A250 6275 F275 6299 F275 6299 F299
Capacity Control Steps
(see page 31)
66688888
Circuit Split, % Capacity
Ckt A 57 62.5 67 50 55 50 50 50
Ckt B 43 37.5 33 50 45 50 50 50
CONDENSER PART NO. 09RP---
HR
Ckt A 043 054 070 054 070 070 070 084
Ckt B 033 033 033 054 054 070 070 084
REFRIGERANT CONN. (in. ODM)
Liquid Line
HS
Ckt A
7
⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
Ckt B
7
⁄
8
7
⁄
8
7
⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
Discharge Line
Ckt A 1
5
⁄
8
15⁄
8
21⁄
8
15⁄
8
21⁄
8
21⁄
8
21⁄
8
21⁄
8
Ckt B 13⁄
8
13⁄
8
13⁄
8
15⁄
8
15⁄
8
21⁄
8
21⁄
8
21⁄
8
LEGEND
ODM — Outside Diameter Male
*Includes refrigerant operating charge.
†The 30HR unit is shipped with full operating charge; 30HS unit is shipped with holding charge only
(cooler operating charge shown — condenser and interconnecting piping charge must be added for
total system charge).
**Prefix (no. of unloaders): A, F = none; 2, 6 = one.
5
Physical data — English (cont)
COOLER
30HR,HS SIZE 070,080,090 100,110,120 140,160
COOLER PART NO. 10HA401--- 664 684 704
DIMENSIONS
OD (ft-in.) 1-
3
⁄
4
1- 4 1-4
Length (ft-in.)* 6-9 6-11 9-0
NET FLUID VOLUME (gal.)† 21.7 40.4 52.4
REFRIGERANT CIRCUITS 222
MAXIMUM DESIGN WORKING
PRESSURE (psig)
Refrigerant Side 235 235 235
Fluid (Shell) Side 300 300 300
FLUID CONN. (in.)
Inlet and Outlet 4** 5** 6**
Drain
3
⁄4FPT
3
⁄4MPT
3
⁄4MPT
*Between tube sheets.
†Includes nozzles.
**Victaulic-type water connections.
CONDENSER
CONDENSER PART NO. 09RP--- 033 043 054 070 084
DIMENSIONS
OD (in.) 10
3
⁄
4
123⁄
4
123⁄
4
123⁄
4
14
Length (in.)* 67
1
⁄
2
77 833⁄
8
951⁄
4
83
NET FLUID VOLUME (gal.) 5.7 8.5 9.9 11.4 13.7
FLUID CONN. — in. diameter†
Inlet IPS** 2
1
⁄
2
3332
1
⁄
2
††
Outlet IPS** 21⁄
2
333 4
FLUID PASSES 33333or6
MAXIMUM DESIGN WORKING Refrigerant Side — 385
PRESSURE (psig) Fluid Side — 250
LEGEND
IPS — Iron Pipe Size
OD — Outside Diameter
*Between tube sheets.
†On part no. 084 condensers, data is for 3-pass only. For 6-pass, inlet and outlet connections are 2
1
⁄2inches.
**Field welded (flange with weld stub provided for all connections).
††The 09RP084 has 2 inlet connections.
NOTES:
1. The 2
1
⁄2-in. and 3-in. condenser connections are equipped with slip-on flanges bolted to the condensers and
designed for field welding of field-supplied 21⁄2-in. and 3-in. schedule 40 pipe.
The 4-in. condenser connections are equipped with welding neck flanges bolted to the condensers and designed
for field welding of field-supplied 4-in. schedule 40 pipe.
2. Standard 30HR,HS160 unit is supplied with 3-pass condensers. To convert from 3 to 6 pass, proceed as follows:
a. Remove 4-in. outlet flanges.
b. Cover 4-in. (09RP084) 3-pass condenser water outlets with blind flanges (field supplied).
3. Water outlet and inlet connections are rated according to ANSI/ASME B 16.5 (American National Standards
Institute/American Society of Mechanical Engineers) latest revision.
6
Physical data —SI
30HR,HS UNIT AND COMPRESSOR
UNIT 30HR,HS SIZE 070 080 090 100 110 120 140 160
APPROXIMATE OPERATING
WEIGHT (kg)*
HR 2159 2243 2300 2919 2982 3045 3336 3527
HS 1499 1524 1551 1978 2005 2032 2297 2347
REFRIGERANT (R-22)
OPERATING CHG (kg)†
HR 47 54 59 63 66 70 78 87
HS 6.9 6.9 6.9 9.5 9.5 9.5 12.2 12.2
COMPRESSOR 06E**
(Reciprocating,
Semi-Hermetic,
29.2 r/s)
HR
Ckt A 2150 A150 6175 A150 6175 F175 6175 A150 6175 F175 6175 F175 6299 F175 6299 F299
Ckt B 6175 6175 6175 6175 A150 6175 A150 6175 F175 6299 F175 6299 F299
HS
Ckt A 2250 A250 6275 A250 6275 F275 6275 A250 6275 F275 6275 F275 6299 F275 6299 F299
Ckt B 6275 6275 6275 6275 A250 6275 A250 6275 F275 6299 F275 6299 F299
Capacity Control Steps
(see page 31)
66688888
Circuit Split, % Capacity
Ckt A 57 62.5 67 50 55 50 50 50
Ckt B 43 37.5 33 50 45 50 50 50
CONDENSER PART NO. 09RP---
HR
Ckt A 043 054 070 054 070 070 070 084
Ckt B 033 033 033 054 054 070 070 084
REFRIGERANT CONN. (in. ODM)
Liquid Line
HS
Ckt A
7
⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
Ckt B
7
⁄
8
7
⁄
8
7
⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
11⁄
8
Discharge Line
Ckt A 1
5
⁄
8
15⁄
8
21⁄
8
15⁄
8
21⁄
8
21⁄
8
21⁄
8
21⁄
8
Ckt B 13⁄
8
13⁄
8
13⁄
8
15⁄
8
15⁄
8
21⁄
8
21⁄
8
21⁄
8
LEGEND
ODM — Outside Diameter Male
*Includes refrigerant operating charge.
†The 30HR unit is shipped with full operating charge; 30HS unit is shipped with holding charge only
(cooler operating charge shown — condenser and interconnecting piping charge must be added for
total system charge).
**Prefix (no. of unloaders): A, F = none; 2, 6 = one.
7
Physical data — SI (cont)
COOLER
30HR,HS SIZE 070,080,090 100,110,120 140,160
COOLER PART NO. 40HA401--- 664 684 704
DIMENSIONS
OD (mm) 324 406 406
Length (mm)* 2057 2108 2743
NET WATER VOLUME (L)† 82.1 152.9 198.3
REFRIGERANT CIRCUITS 222
MAXIMUM DESIGN WORKING
PRESSURE (kPa)
Refrigerant Side 1620 1620 1620
Fluid (Shell) Side 2068 2068 2068
FLUID CONN. (in.)
Inlet and Outlet 4** 5** 6**
Drain
3
⁄4FPT
3
⁄4MPT
3
⁄4MPT
*Between tube sheets.
†Includes nozzles.
**Victaulic-type water connections.
CONDENSER
CONDENSER PART NO. 09RP--- 033 043 054 070 084
DIMENSIONS
OD (mm) 273 324 324 324 356
Length (mm)* 1715 1956 2118 2419 2108
NET FLUID VOLUME (L) 21.6 32.2 37.5 43.1 51.9
FLUID CONN. — in. diameter†
Inlet IPS** 2
1
⁄
2
3332
1
⁄
2
††
Outlet IPS** 21⁄
2
333 4
FLUID PASSES 33333or6
MAXIMUM DESIGN WORKING Refrigerant Side — 2654
PRESSURE (kPa) Fluid Side — 1724
LEGEND
IPS — Iron Pipe Size
OD — Outside Diameter
*Between tube sheets.
†On part no. 084 condensers, data is for 3-pass only. For 6-pass, inlet and outlet connections are 2
1
⁄2inches.
**Field welded (flange with weld stub provided for all connections).
††The 09RP084 has 2 inlet connections.
NOTES:
1. The 2
1
⁄2-in. and 3-in. condenser connections are equipped with slip-on flanges bolted to the condensers and
designed for field welding of field-supplied 21⁄2-in. and 3-in. schedule 40 pipe.
The 4-in. condenser connections are equipped with welding neck flanges bolted to the condensers and designed
for field welding of field-supplied 4-in. schedule 40 pipe.
2. Standard 30HR,HS160 unit is supplied with 3-pass condensers. To convert from 3 to 6 pass, proceed as follows:
a. Remove 4-in. outlet flanges.
b. Cover 4-in. (09RP084) 3-pass condenser fluid outlet with blind flanges (field supplied).
3. Water outlet and inlet connections are rated according to ANSI/ASME B 16.5 (American National Standards
Institute/American Society of Mechanical Engineers) latest revision.
8
Accessories (field installed)
Condenser manifold package — This accessory is available for all 30HR models except the size 160 unit. The
manifold provides common fluid inlet and outlet connections and consists of 2 steel manifolds, each in 2 sections.
Field welding is required.
Control circuittransformer —Fieldinstalled transformer
provides 115-v control circuit power if separate control
power source is not available.
Remote reset thermistor — Enables control for space
and outdoor-air temperature reset.
Unit sound enclosure panels — These panels, with fiberglass insulation, completely enclose the compressor and
condenser sections.
Gage panelpackage — One packageis required perunit.
Package includes one suction pressure gage and one discharge pressure gage per circuit mounted on a common
panel. Each gage is equipped with a shutoff valve.
Temperaturereset — Leaving fluid temperature reset accessory board may be installed in chiller to provide reset of
LCWT (leaving chilled fluid temperature) in constant fluid
flow systems. Three reset control options are: from returnfluid temperature, space temperature, and outdoor-air
temperature.
Demand limit control — This control provides 2 demand
limit steps: 1) between 50% and 100% of maximum compressor displacement; or 2) between 0% and 49% displacement. The external switching device determines when to
limit unit capacity.
Chilled Fluid Flow Switch — Although low fluid flow detection is provided by the unit internal control devices, this
accessory is available for field installation for redundant
protection.
Oil-pressure safety switch — Standard on condenserless (30HS) models, accessory on fluid-cooled (30HR) models. Switch protects compressors against loss of oil pressure
in the event of a loss of lubricating oil. One switch package
is needed for each lead compressor.
9
Base unit dimensions — 30HR,HS070-090
CONDENSER SECTION — 30HR ONLY
LEGEND
ASA — American Standards Association
COMP — Compressor
COND — Condenser
CONN — Connection
KO — Knockout
MTG — Mounting
REG — Regulatory
SAE — Society of Automotive Engineers (U.S.A.)
SCH 40 — Schedule 40 Pipe
NOTES:
1. Allow 24 in. in front of unit to fully open electric panel door.
2. Shaded piping indicatesaccessory manifold fluid package availablewith
weld connections for connections to stub of condenser fluid connections. Sleeve coupling permits customer adjustment before welding.
10
Base unit dimensions — 30HR,HS100-120
CONDENSER SECTION — 30HR ONLY
LEGEND
ASA — American Standards Association
COMP — Compressor
COND — Condenser
CONN — Connection
KO — Knockout
MTG — Mounting
REG — Regulatory
SAE — Society of Automotive Engineers (U.S.A.)
SCH 40 — Schedule 40 Pipe
NOTES:
1. Allow 24 in. in front of unit to fully open electric panel door.
2. Shaded piping indicates accessory manifold fluid package available with weld connections for connections to stub of condenser
fluid connections. Sleeve coupling permits customer adjustment
before welding.
11
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