Unitary products group RP007 Series, RP009 Series, RP012 Series, RP018 Series, RP024 Series Installation & Operating Instructions Manual
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INSTALLATION
INSTALLATION & OPERATING INSTRUCTIONS
FOR RP007 - 060 SERIES
MANUAL
CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . .3
PRE-INSTALLATION INSPECTION OF
EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . 4
START-UP AND OPERATION . . . . . . . . . . . . . . . 10
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Complete Table of Contents on following pages.
WATER SOURCE HEAT PUMPS
RP007 TO 060
NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes
clarify or make the installation easier. Cautions
to prevent equipment damage. Warnings
alert installer that personal injury and/or equipment damage may result if installation procedure is not handled
properly.
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
are intended to
are given
are given to
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TABLE OF CONTENTS
036-21521-001-A-0103
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . 3
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRE-INSTALLATION INSPECTION OF EQUIPMENT . . . . 4
RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CLEARANCES REQUIRED . . . . . . . . . . . . . . . . . . . . . . . . . 6
UNIT MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DUCT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ELECTRICAL POWER SUPPLY AND CONNECTIONS . . . 6
ROOM THERMOSTAT AND CONTROL WIRING . . . . . . . 7
BLOWER PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . 8
LOOP WATER SUPPLY AND PIPING
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SUPPLY/RETURN PIPING . . . . . . . . . . . . . . . . . . . . . . . . . 9
CONDENSATE DRAIN PIPING . . . . . . . . . . . . . . . . . . . . . 10
WATER REGULATING VALVE – INSTALLATION . . . . . . 10
START-UP AND OPERATION . . . . . . . . . . . . . . . . 10
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
WATER REGULATING VALVE - ADJUSTMENT . . . . . . . 11
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
STANDARD PRODUCT WARRANTY . . . . . . . . . . . . . . . . 17
LIST OF FIGURES
Fig. # Pg. #
1 UNIT MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 TYPICAL SINGLE PHASE WIRING DIAGRAM . . . . . 13
3 TYPICAL THREE PHASE WIRING DIAGRAM . . . . . 14
4 HORIZONTAL MODELS - DIMENSIONS . . . . . . . . . . 15
5 VERTICAL MODELS - DIMENSIONS . . . . . . . . . . . . . 16
LIST OF TABLES
Tbl. # Pg. #
1 GENERAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 OPERATING LIMITS - WATER LOOP
APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 BLOWER PERFORMANCE (CFM) . . . . . . . . . . . . . . . 8
5 UNIT WATER PRESSURE DROP . . . . . . . . . . . . . . . 10
6 R-22 REFRIGERANT CHARGE . . . . . . . . . . . . . . . . 12
7 HORIZONTAL MODELS - DIMENSIONS . . . . . . . . . 15
8 VERTICAL MODELS - DIMENSIONS . . . . . . . . . . . . 16
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PRODUCT NOMENCLATURE
Water Cooled Package Heat Pump and AC Model Number Nomenclature
Product Category
R = Watercooled ID Package,HP
Product Identifier
P = HP, R-22 High Efficiency
Nominal Cooling Capacity - MBH
007 = 0.5 Ton
009 = 0.75 Ton
012 = 1 Ton
018 = 1.5 Ton
024 = 2 Ton
030 = 2.5 Ton
036 = 3 Ton
048 = 4 Ton Heat Type
060 = 5 Ton C00 = No Heat Option
R P 060 C00 V 2 L AB 1
V = Vertical
H = Horizontal
AA = None AG = AB + AE
AB = Insulated Water Circuit(Not available on cooling only) AH = AB + AF
AC = Cooling only (No Reversing Valve) AJ = AC = AD
AD = Cupro Nickle Heat Exchanger AK = AC = AE
AE = Condensate Overflow Switch w/ Alarm output AL = AC = AF
AF = Remote Management Relay Pkg w/ Alarm output
INTRODUCTION
RP units are completely self-contained heating and/or
air conditioning units. This equipment employs a waterto-refrigerant heat exchanger to extract (heating cycle)
or reject (cooling cycle) heat from/to a circulating
water-loop.
All models 1/2 through 5 tons are shipped as factorycharged packages. Horizontal units are designed for
suspended ceiling mounting, and are constructed with
integral hanger channels. Vertical units are designed
for free-standing floor mounting. All units are shipped
completely factory wired and pre-piped. Water supply,
water outlet, and condensate drain connections are via
female threaded pipe fittings.
Each refrigeration circuit includes an adjustable bi-flow
expansion valve, liquid line filter drier, and multiple service gauge ports. External high pressure and low pressure protection switches are included in each
compressor circuit. Heat Pump models feature a pilot
operated, sliding piston type, 4-way reversing valve
with a replaceable magnetic solenoid coil.
Product Generation
1 = First Generation
Installation Options
Voltage
1 = 208/230-1-60
2= 208/230-3-60
4 = 460-3-60
5 = 575-3-60
L = Left Hand Return
R = Right Hand Return
Airflow
Additional Options
The coaxial water-to-refrigerant heat exchanger, and
all water piping within the unit are rated for water side
working pressures up to 400 psig. Automatic water flow
regulating valves are available as field installed accessories.
All units are completely factory wired with all necessary
operating controls. A 24 volt control circuit, with oversize transformer, is provided for field connection. Units
are designed to operate with conventional thermostat
control interface. The reversing valve solenoid coil
shall be energized in cooling mode only. A manual
reset lock-out relay is provided to disable the compressor control circuit in the event of high/low pressure cutout.
These units are designed for indoor installation only.
They are not
intended or approved for outdoor installa-
tion.
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PRE-INSTALLATION INSPECTION OF
EQUIPMENT
All units are factory tested to ensure safe operation and
quality assembly. Units are packaged and sealed on
wooden skid runners and shipped in first class condition. Torn and broken packaging, scratched or dented
panels should be reported to carrier immediately. Internal inspection of all units should be performed prior to
installation . Remove all access doors and check for
visual defects that can occur during transport. Any
problems found internally should be reported to carrier
and manufacturer immediately. Refrigerant circuit
should be checked to ensure no leaks have occurred
during shipment. Install gauge set to high and low pressure ports to confirm pressure has been maintained
and no leaks have occurred during shipment. Repair
any damage prior to installation to ensure safe operation.
NOTE: Record any unit damage on the Bill of Lading and
report to carrier and factory immediately. Shipping
and handling damages are not warranty items.
RIGGING
INSTALLATION
Lock all electrical power supply switches in the
off position before installing the unit. Failure to
disconnect power supply may result in electrical
shock or even death.
Only qualified personnel should perform installation and service of this equipment.
Location - To ensure unit operates at maximum efficiencies, choose a dry indoor area where the temperature is controlled between 40° F and 115° F.
Consideration of surrounding areas should be taken
when choosing a location to install the unit. Common
vibration and sound levels associated with commercial
equipment may be objectionable to people or equipment.
Prior to mounting unit, check individual unit
weights (page 4) and verify lifting capacity of lifting
equipment exceeds weight of units by safe margins. failure to do so may result in unit damage,
personal injury or even death.
Failure to allow adequate space between units
may result in poor unit performance and possible
unit failure.
Install thermostats, supply air ductwork, and return air
ductwork (if applicable) so that each unit will operate
only in a single cooling or heating zone. In order to
assure proper drainage of condensate, horizontal units
can be slightly pitched in the same direction as drain
pan outlet.
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TABLE 1: GENERAL DATA
Model Series 007 009 012 018 024 030 036 048 060
Nominal Cooling(Ton) 0.5 0.75 1.0 1.5 2.0 2.5 3.0 4.0 5.0
Cooling Performance
Cooling Capacity (BTUH) 7000 9000 12800 18100 24200 30800 36100 48200 59000
EER 12.4 13.0 12.6 14.4 14.4 13.5 14.2 14.0 12.6
Heating Capacity (BTUH) 8800 10700 14800 20900 27500 35200 41400 56000 72000
COP 4.2 4.4 4.2 4.5 4.6 4.4 4.6 4.6 4.4
Design CFM 200 300 400 600 800 1000 1200 1600 2000
Nominal Water flow (gpm) 1.5 2.25 3.0 4.5 6.0 7.5 9.0 12.0 15.0
Compressor-Type Rotary Rotary Rotary Rotary Recip. Recip. Recip. Recip. Recip.
Number Used 111111111
Air Coil-Type Enhanced Copper Tubes, Enhanced Aluminum Fins
Face Area (sq ft) 1.00 1.00 1.00 1.51 2.56 2.56 2.88 4.38 5.00
Rows/FPI 2/14 2/14 3/14 3/14 3/14 3/14 3/14 3/14 3/14
Water Coil-Type Co-axial
Water Connection Size 1/2" FPT 1/2" FPT 1/2" FPT 3/4" FPT 3/4" FPT 3/4" FPT 3/4" FPT 3/4" FPT 1"FPT
Drain Connection Size 3/4" FPT
Direct Drive Fan-Type Centrifugal, Forward Curved
Number Used 111111111
Diameter x Width (in) 9x4 9x4 9x4 9x6 9x7 9x7 9x7 10x9 10x9
Motor HP/Speed 0.10/3 0.10/3 0.17/3 0.25/3 0.25/3 0.33/3 0.50/3 0.75/3 1.0/3
Filters
HWP - Quantity-Size (in)
VWP - Quantity-Size (in)
Weight
Operating 130 135 155 180 215 235 260 325 345
Shipping 145 150 170 195 230 255 280 345 365
1-14x16x1 1-14x16x1 1-14x16x1 1-16x20x1 1-18x25x1 1-18x25x1 1-20x25x1 2-20x20x1
1-14x16x1 1-14x16x1 1-14x16x1 1-16x20x1 1-18x25x1 1-18x25x1 1-20x25x1
1-16x25x1
1-14x25x1
1-20x20x1
1-20x25x1
1-18x25x1
1-16x25x1
NOTE:
1. Performance calculated in accordance with ARI/ISO Standard 13256-1 for Water Loop application.
2. Cooling capacities are rated at entering air conditions of 80.6°F db / 66.2° F wb, 86° F entering water temperature.
3. Heating capacities are rated at entering air conditions of 68° F db / 59° F wb, 68° F entering water temperature.
TABLE 2: OPERATING LIMITS - WATER LOOP
APPLICATION
COOLING HEATING
Min. Entering Water 50°F
Max. Entering Water 110°F 80°F
Normal Entering Water 60-90°F 50-70°F
1.
Heating operation below 55°F requires insulated water circuit.
Unitary Products Group 5
40°F
1
CLEARANCES REQUIRED
036-21521-001-A-0103
Twenty-four (24) inch clearance is required on all sides
of the unit for service access. Service access doors are
equipped with lifting handles and are located on all
sides of the unit to allow easy servicing of all components.
UNIT MOUNTING
Vertical units should be mounted level on a vibration
absorbing pad(s) to minimize vibration transmission
through the floor structure. It is not necessary to anchor
the unit to the floor.
Horizontal units are typically suspended above a ceiling by threaded steel rods, securely anchored to the
building structure. Units should be supported from the
holes in the rail extensions at the four corners, using
steel threaded rods having a minimum diameter of 3/8
inch. Four rubber bushings are supplied with the unit to
be placed between the unit and the supporting rods to
absorb vibration.
3/8" THREADED
ROD (BY OTHERS)
FIGURE 1 : UNIT MOUNTING
DUCT CONNECTIONS
Canvas or other types of flexible collars are recommended for connecting the air ducts to the unit. The
supply air duct collar can be connected directly to the
blower outlet flange. Allowance must be made in the
supply duct for removal of the first duct section adjacent to the unit, for the servicing of the blower and
motor assembly. Return air may be ducted to the unit
or drawn directly from the ceiling space into the filter.
Supply ducts should be sized for an air velocity of not
more than 1000 feet per minute. Return ducts should
be sized for a velocity of not more than 700 feet per
minute. When the sound level is critical, it is recommended that both the supply and return
INTEGRAL
SUPPORT
RAIL
WASHER
(BY OTHER)
DOUBLE HEX NUT
(BY OTHER)
ducts be lined with acoustic insulation for the first ten
feet closest to the unit. The supply duct should also
have at least one elbow or tee upstream of the first outlet connection for good sound attenuation.
ELECTRICAL POWER SUPPLY AND CONNECTIONS
Before installing the unit, make sure that the voltage
and number of phases on the unit data plate are the
same as the available power supply. All wiring and
switchgear installed external to the unit must conform
to all applicable local codes. The maximum allowable
size of fuses or circuit breaker required is shown on the
unit data label. Fuses must be of the time delay type.
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The power supply wiring is to be connected directly to
the line side of compressor contactor as shown on the
connection wiring diagram. A ground wire must be connected to the ground lug marked GND in the electrical
control box.
so that constant fan operation can be selected if
desired. Heat Pump models require the installation of a
heating and cooling thermostat with a dedicated "O"
terminal for activating the reversing valve. Wiring
between the thermostat and the unit should be 18 Ga.
minimum. Appropriate room thermostats can be
ROOM THERMOSTAT AND CONTROL WIRING
ordered as an optional accessory for delivery with the
units if desired.
Any single stage 24-volt room thermostat can be used
with the “cooling only” models. It is recommended that
the thermostat sub-base should include a fan switch,
TABLE 3: ELECTRICAL DATA
MODEL
SERIES
007 208-230/1/60 1 @ 2.8 17.7 0.10 0.9 4.35 15
009 208-230/1/60 1 @ 3.4 23.0 0.10 0.9 5.15 15
012 208-230/1/60 1 @ 4.8 26.3 0.17 1.4 7.40 15
018 208-230/1/60 1 @ 6.4 38.0 0.25 1.5 9.5 15
024 208-230/1/60 1 @ 10.4 49.0 0.25 1.5 14.50 20
030
036
048
060
SUPPLY
VOLTAGE
208-230/1/60 1 @ 12.4 61.0 0.33 2.6 18.10 30
208-230/3/60 1 @ 7.7 55.0 0.33 2.6 12.23 15
208-230/1/60 1 @ 15.3 82.0 0.50 3.2 22.33 35
208-230/3/60 1 @ 10.0 68.0 0.50 3.2 15.70 25
460/3/60 1 @ 4.8 34.0 0.50 1.9 7.90 15
208-230/1/60 1 @ 19.0 105.0 0.75 4.9 28.65 45
208-230/3/60 1 @ 14.0 91.0 0.75 4.9 22.40 35
460/3/60 1 @ 5.9 42.0 0.75 2.2 9.58 15
575/3/60 1 @ 4.8 34.0 0.75 1.8 7.80 15
208-230/1/60 1 @ 24.6 132.0 1.00 5.1 35.85 60
208-230/3/60 1 @ 16.0 97.0 1.00 5.1 25.10 40
460/3/60 1 @ 8.2 50.0 1.00 3.2 13.45 20
575/3/60 1 @ 5.0 44.0 1.00 2.6 8.85 15
COMPRESSOR BLOWER
QTY RLA LRA HP FLA
MIN. CCT.
AMPACITY
MAX FUSE /
CCT. BKR. AMP
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BLOWER PERFORMANCE
A simple method for approximating sufficient air vol-
ume is to measure the difference between the supply
All units employ direct-drive blower motors with multiple speed taps available. The motors have been
selected to deliver the nominal air volume against varying external static pressures when necessary. After
installation of the unit, it will be necessary to check the
air volume and change the motor speed connection
and return air temperatures. In Heating mode, the air
temperature rise should be in the range of 20ºF to 30ºF.
In Cooling mode, the temperature drop should be
between 15ºF to 25ºF. If values are outside the appro-
priate range, increase or reduce the motor speed as
necessary.
accordingly if the air volume is too high or too low. All
units are factory-wired with the medium speed winding
connected.
TABLE 4: BLOWER PERFORMANCE (CFM)
EXTERNAL STATIC PRESSURE (in w.g.)
UNIT SPEED 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
High - - - - 270 235 195 150 -
007
009
012
018
024
030
036
048
060
Note: Units are shipped pre-wired for Medium speed.
Med - - 260 240 210 175 - - -
Low 225 215 200 180 150 - - - -
High - - 380 360 330 290 240 - -
Med 350 340 325 300 270 235 - - -
Low 285 275 260 240 210 - - - -
High 495 475 450 420 385 345 300 - -
Med 470 455 430 400 365 325 - - -
Low 385 370 355 330 300 - - - -
High - - 705 660 610 555 495 430 -
Med - 700 660 615 565 510 450 - -
Low 690 665 630 585 535 480 - - -
High - - 1005 950 890 820 740 650 -
Med 925 905 875 840 790 730 660 - -
Low - - 780 765 725 660 590 - -
High - - 1170 1120 1060 985 905 810 -
Med 1150 1125 1090 1045 990 925 850 765 -
Low - 975 970 940 905 855 785 - -
High - 1390 1330 1270 1210 1140 1055 960 -
Med 1355 1320 1270 1215 1155 1085 1005 920 -
Low 1200 1190 1170 1130 1085 1020 950 - -
High - - 1990 1915 1835 1750 1660 1550 1415
Med 1880 1860 1820 1770 1710 1640 1550 1450 1320
Low - 1490 1485 1480 1460 1420 1360 1285 1160
High 2340 2280 2210 2140 2070 1990 1895 1790 1660
Med 2040 2030 2005 1970 1925 1860 1785 1700 1590
Low - - 1705 1700 1680 1660 1610 1540 -
All airflow ratings are at lowest voltage rating of dual rating (i.e., 208 volt)
Airflow ratings include resistance of wet coil and clean air filters.
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LOOP WATER SUPPLY AND PIPING
CONNECTIONS
The recommended circulating water supply for heat
pump systems is a closed-water loop, utilizing a cool-
ing tower and boiler to maintain the loop temperature
within acceptable temperature limits. Typically, the
closed loop temperature is maintained above 60° F and
below 90° F. All units function independently, either
adding heat to the loop (cooling mode) or removing
heat from the loop (heating mode).
When utilizing an open cooling tower (evaporative
type), chemical treatment is mandatory to ensure that
the loop water is free of corrosive minerals. A secondary heat exchanger between the open cooling tower
and the closed water loop may also be used. It is
imperative that all air is purged from the closed loop
side to prevent condenser fouling.
Dual acting water regulating valves should be used
when there is potential for low fluid flow and/or low fluid
temperature or high fluid temperature conditions to
exist. These water regulating valve assemblies consist
of a direct acting valve parallel coupled to a reverse
acting valve. The direct acting valve opens in response
to an increase in discharge pressure during cooling
mode. The reverse acting valve opens in response to a
decrease in suction pressure during heating mode.
The heat rejection water source for cooling-only units
may be from a municipal supply main, a cooling tower,
or a chilled water system. An automatic water flow regulating valve is normally required, except if the inlet
water temperature is constant and the flow rate can be
pre-set and turned on and off by some other means,
such as a dedicated pump circuit or solenoid valve.
Automatic water flow regulating valves, for both heat
pump and cooling-only applications, are available as
field installed accessories. The valves are installed on
the water outlet connection from the unit. Schrader
type refrigerant pressure access fittings are included
as standard in all units.
SUPPLY/RETURN PIPING
Supply and return piping should be as large as the unit
connection sizes (larger on long pipe runs). Never use
flexible hoses of a smaller inside diameter than that of
the nominal water pipe size. Both supply and return
water lines will sweat if subjected to low water temperatures. Insulate these lines as necessary to prevent condensation damage.
Flexible hoses should be used between the unit and
rigidly mounted piping to avoid vibration transmission.
Teflon tape thread sealant is recommended. Do not
overtighten threaded connections. Ball valves should
be installed in the supply and return lines for unit isolation and water flow balancing. Before final connection
to the unit, the supply and return hoses should be connected together and the piping system flushed to
remove any dirt or foreign material.
Pressure and temperature ports are recommended in
both the supply and return lines for system flow balancing. The water flow can be accurately set by measuring
the water-side pressure drop through the unit. See the
flow versus pressure drop specification table for application information. Do not exceed the recommended
water flow rates. Damage due to erosion of the
water-to-refrigerant heat exchanger could occur.
Unitary Products Group 9
TABLE 5: UNIT WATER PRESSURE DROP
007 009 012 018 024 030 036 048 060
EWT
o
F
50
60
70
85
100
WPD
GPM
(psi)
1.0 0.8 1.35 1.4 1.8 2.1 2.75 2.3 3.5 3.3 4.5 3.6 5.5 2.9 7.5 3.9 9.0 3.6
1.5 2.0 2.25 3.5 3.0 5.3 4.50 5.7 6.0 8.0 7.5 9.0 9.0 7.0 12.0 9.6 15.0 8.8
1.0 0.7 1.35 1.4 1.8 2.0 2.75 2.2 3.5 3.2 4.5 3.5 5.5 2.8 7.5 3.7 9.0 3.5
1.5 1.9 2.25 3.4 3.0 5.1 4.50 5.5 6.0 7.7 7.5 8.7 9.0 6.8 12.0 9.2 15.0 8.5
1.0 0.7 1.35 1.3 1.8 1.9 2.75 2.1 3.5 3.0 4.5 3.3 5.5 2.6 7.5 3.5 9.0 3.3
1.5 1.8 2.25 3.2 3.0 4.8 4.50 5.2 6.0 7.3 7.5 8.2 9.0 6.4 12.0 8.7 15.0 8
1.0 0.7 1.35 1.2 1.8 1.8 2.75 2.0 3.5 2.9 4.5 3.1 5.5 2.5 7.5 3.3 9.0 3.1
1.5 1.7 2.25 3.0 3.0 4.6 4.50 4.9 6.0 6.9 7.5 7.8 9.0 6.1 12.0 8.3 15.0 7.6
1.0 0.6 1.35 1.2 1.8 1.7 2.75 1.9 3.5 2.7 4.5 3.0 5.5 2.4 7.5 3.2 9.0 3.0
1.5 1.6 2.25 2.9 3.0 4.4 4.50 4.7 6.0 6.6 7.5 7.5 9.0 5.8 12.0 7.9 15.0 7.3
GPM
WPD
(psi)
GPM
WPD
(psi)
GPM
UNIT MODEL
WPD
GPM
(psi)
WPD
(psi)
GPM
WPD
(psi)
GPM
WPD
(psi)
036-21521-001-A-0103
WPD
(psi)
GPM
GPM
WPD
(psi)
CONDENSATE DRAIN PIPING
Horizontal Units - The 3/4 FPT drain connection on the
unit is NOT internally trapped. The cooling coil compartment and drain pan are under negative pressure
when the blower is running, therefore a P trap MUST
be used in the drain line.
It is recommended that a ¾ inch drain line be sloped
(¼ inch/foot) all the way to an open drain. Each unit
must be installed with its own individual trap, and have
the means to flush out the condensate line if necessary. If it is not possible to reach an open drain by gravity flow, a pump kit, which is available as an accessory,
can be mounted close to the unit.
Vertical Units - Each unit utilizes a flexible hose inside
the cabinet as a trapping loop. An external P-trap is not
necessary.
WATER REGULATING VALVE – INSTALLATION
The water regulating valve is to be installed in the
water outlet line, as close as possible to the unit cabinet (maximum 18 inches distance). The capillary tube
from the sensing bellows on the valve(s) must be connected to the ¼ inch male flare connection, which is on
the refrigerant liquid line in the condenser compartment. Connect the capillary tube flare nut directly to the
unit male flare fitting. When one is making this connection, it is normal for some refrigerant to escape as the
schrader valve core is being opened and the nut is
being tightened. Complete the tightening of the nut as
soon as possible to minimize the loss of refrigerant. Do
not over-tighten.
START-UP AND OPERATION
NOTE: The services of a qualified Refrigeration Service
Mechanic should be employed in the start-up and
commissioning of these systems.
Lock all electrical power supply switches in the off
position before installing the unit. failure to disconnect power supply may result in electrical shock or
even death.
After completing the installation, and before energizing
the power supply to the unit, the following checks
should be made -
• Verify that the electrical supply to the unit is of the
correct voltage, and rated for sufficient amperage
in accordance with the nameplate values.
• Verify that the low voltage wiring between the unit
and the thermostat is correct.
• Confirm that the water piping is complete and free
of leaks.
• Check that the water flow rate is correct, and adjust
as necessary.
• Confirm that the blower wheel rotates freely.
• All service access panels are in place and properly
secured.
A room thermostat should be used to cycle the unit on
and off automatically as required to maintain the room
temperature at the set point of the thermostat. The air
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circulating fan will cycle on and off with the compressor.
If desired, the air circulating fan can be run continuously.
The units have a lock out relay that will prevent the unit
from cycling on the low pressure cut out or the high
pressure cut out. If either of these safety devices open,
the compressor will not restart when the safety device
resets. To restart the compressor after a safety lock
out, it will be necessary to interrupt the power to the
control circuit. This can be done at the thermostat or at
the disconnect switch.
START-UP
1. Set the thermostat to the highest setting.
2. Set the fan switch to the 'AUTO' position, and the
thermostat system switch to 'COOL'.
3. Reduce the thermostat setting to approximately 5
degrees below room temperature.
4. The compressor, and the supply air blower, will
start. Simultaneously the reversing valve will be
energized.
5. After five minutes, verify cooling mode operation by
checking for cool air discharge at the supply air
outlet.
6. Set the thermostat system switch to the 'OFF' position. The unit will stop running, and the reversing
valve will de-energize.
7. Allow approximately five minutes to allow for system pressures to equalize.
8. Set the thermostat to its lowest temperature setting.
9. Move the thermostat system switch to 'HEAT'.
10. Increase the thermostat setting approximately 5
degrees above room temperature.
11. After five minutes, verify heating mode operation
by checking for warm air discharge at the supply
air outlet.
12. Adjust the thermostat to maintain the desired
space temperature.
13. Check the unit for unusual vibrations, noises,
leaks, etc.
WATER REGULATING VALVE - ADJUSTMENT
The water regulating valve needs to be adjusted to
maintain a condensing pressure of 170 to 220 PSIG.
The valve is adjusted by turning the ¼ inch square
shaft on top of the spring housing. Turning the adjusting screw counter clockwise will raise the opening
pressure and raise the condensing pressure being
maintained. Turning the adjusting screw clockwise will
lower the opening point and lower the condensing
pressure being maintained. If mains water is being
used, make sure the valve closes soon after the compressor stops. If the flow does not stop after a few minutes, raise the opening pressure by turning the
adjusting shaft counter clockwise until the flow stops.
If the unit is running on mains water, we recommend
adjusting the water regulating valve to give 100ºF leaving water temperature or 220 PSIG condensing temperature. This will give the best compromise between
low water flow and high operating efficiency. If the condenser water is being re-circulated through a cooling
tower or a chilled water system, it is recommended that
the water regulating valve be set for a lower condensing temperature. This will provide higher efficiency,
lower operating cost and a lower sound level. The minimum condensing pressure required for satisfactory
expansion valve operation is 170 PSIG.
MAINTENANCE
The air circulating fan motor has bearings that are factory lubricated and sealed for long life. No further lubrication is required. The compressor is part of a sealed
refrigeration system that does not require any additional lubrication.
Filter changes are required at regular intervals. It is
suggested that the filter be checked at 60-day intervals
for the first year of operation, until field experience is
acquired. If light cannot be seen through the filter, it
should be changed. Always replace the filter with the
same size of 1-inch thick disposable type of fiberglass
filter. (See General Data for listing of required filter
sizes.)
The condensate drain pan should be checked annually,
and cleaned and flushed as required.
Recording of reference operating parameters is recommended (volts, amp draw, water temperature differences, etc.). A comparison of logged data with start-up
and annual data is useful as an indicator of general
equipment condition.
Unitary Products Group 11
036-21521-001-A-0103
Periodic lockouts are almost always caused by air or
water problems. The lockout of the compressor is a
normal protective result of insufficient heat transfer.
Check for dirt in the water system, insufficient water
TABLE 6: R-22 REFRIGERANT CHARGE
UNIT
SIZE
060 5.0 5 lbs. – 8 oz. 5 lbs. – 13 oz.
048 4.0 4 lbs. – 6 oz. 4 lbs. – 9 oz.
036 3.0 3 lbs. – 5 oz. 3 lbs. – 7 oz.
030 2.5 2 lbs. – 12 oz. 2 lbs. – 14 oz.
024 2.0 2 lbs. – 4 oz. 2 lbs. – 6 oz.
018 1.5 1 lbs. – 12 oz. 1 lbs. – 14 oz.
012 1.0 1 lbs. – 6 oz. 1 lbs. – 7 oz.
009 0.75 1 lbs. – 1 oz. 1 lbs. – 1 oz.
007 0.50 10 oz. 10 oz.
CAPACITY
TONS
flow rates, excessive water temperatures, air flow rates
(dirty filters), and air temperatures.
HORIZONTAL VERTICAL
12 Unitary Products Group
036-21521-001-A-0103
APPLIES TO ALL
208/230-1-60 SINGLE
PHASE MODELS
Note: Solenoid Valve (SV) used
on Heat Pump version only.
FIGURE 2 : TYPICAL SINGLE PHASE WIRING DIAGRAM
Unitary Products Group 13
036-21521-001-A-0103
APPLIES TO MODELS:
RP030, RP036, RP048
& RP060
NOTE: Solenoid Valve (SV) used
on Heat Pump version only.
FIGURE 3 : TYPICAL THREE PHASE WIRING DIAGRAM
14 Unitary Products Group
036-21521-001-A-0103
FIGURE 4 : HORIZONTAL MODELS - DIMENSIONS
TABLE 7: HORIZONTAL MODELS - DIMENSIONS
ABCDEF
007 34.50 19.00 15.00 32.25 21.50 2.56 15.00 2.00 12.00 5.75 6.81 10.31 3.75
009 34.50 19.00 15.00 32.25 21.50 2.56 15.00 2.00 12.00 5.75 6.81 10.31 3.75
012 34.50 19.00 15.00 32.25 21.50 2.56 15.00 2.00 12.00 5.75 6.81 10.31 3.75
018 40.00 21.00 16.00 37.75 23.50 2.56 18.00 1.00 14.00 6.50 8.25 10.31 3.75
024 45.00 21.00 18.00 42.75 23.50 2.25 25.00 1.00 16.00 6.50 9.19 10.31 4.81
030 45.00 21.00 18.00 42.75 23.50 2.25 25.00 1.00 16.00 6.50 9.19 10.31 4.81
036 48.00 23.00 20.00 45.75 25.50 2.25 25.00 1.00 18.00 6.50 9.19 10.31 5.88
048 58.00 25.00 20.00 55.75 27.50 2.25 38.99 1.00 18.00 6.00 12.25 11.38 5.13
060 63.00 25.00 20.00 60.75 27.50 2.25 42.00 1.00 18.00 6.00 12.25 11.38 5.13
Unitary Products Group 15
RETURN AIR
GH J LM
K
SUPPLY AIR
N
FIGURE 5 : VERTICAL MODELS - DIMENSIONS
TABLE 8: VERTICAL MODELS - DIMENSIONS
ABC
007 22.50 22.50 33.00 6.81 10.31 2.00 7.81 14.88 12.50 1.25 N/A N/A
009 22.50 22.50 33.00 6.81 10.31 2.00 7.81 14.88 12.50 1.25 N/A N/A
012 22.50 22.50 33.00 6.81 10.31 2.00 7.81 14.88 12.50 1.25 11.50 12.00
018 22.50 22.50 35.00 8.25 10.31 2.00 7.13 16.88 14.50 1.25 11.50 12.00
024 22.50 22.50 45.00 9.19 10.31 2.00 7.13 16.88 23.50 1.25 11.50 12.00
030 22.50 22.50 45.00 9.19 10.31 2.00 6.63 16.88 23.50 1.25 11.50 12.00
036 24.50 24.00 45.00 9.19 10.31 3.00 7.63 18.88 23.50 1.25 12.50 12.50
048 29.50 27.50 52.00 12.25 11.38 3.00 8.63 23.00 28.50 0.75 14.19 14.31
060 29.50 27.50 56.00 12.25 11.38 3.00 8.81 23.00 32.50 0.75 14.19 14.31
Subject to change without notice. Printed in U.S.A.
Copyright © by Unitary Products Group 2003. All rights reserved. Supersedes: Nothing 036-21521-001-A-0103
Unitary 5005 Norman
Products York OK
Group Drive 73069
AIR SUPPLY
DE KLMPR
FG
RETURN AIR
OPTIONAL
PLENUM
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