Daikin RCS Series Instruction Manual

6.5 – 7.5 Tons
10.0 – 12.0 Tons
15.0 – 20.0 Tons
Installation and Maintenance IM 962-4
Group: Applied Air Systems
Part Number: IM 962-4
Date: June 2023
Air-Cooled Split System
Condensing Units
Models RCS 06G – 20F
6.5 to 20 Tons
R-410A Refrigerant

Table of Contents
Introduction .................................3
Hazard Identication Information ................3
Checking Product Received ....................3
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Standard Unit Features .......................4
Dimensional and Weight Data ..................6
Physical Data ................................8
Electrical Data ...............................9
Installation..................................10
Installation General .........................10
Rooftop Installation ..........................11
Slab Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Installation of Piping .........................12
Refrigerant Charge ..........................16
Final Leak Testing ..........................18
Accessory Installation .......................19
Maintenance and Operation ...................20
Charging Charts ............................21
Wiring Diagrams ............................27
Service and Warranty Procedure ...............30
Warranty Registration Form ...................31
Quality Assurance Survey Form ................34
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©2023 Daikin Applied, Minneapolis, MN. All rights reserved throughout the world.This document contains the most current product information as
of this printing. Daikin Applied Americas Inc. has the right to change the information, design, and construction of the product represented within the
document without prior notice. For the most up-to-date product information, please go to www.DaikinApplied.com.
™® MicroTech, SiteLine, and Daikin Applied are trademarks or registered trademarks of Daikin Applied Americas Inc. The following are trademarks
or registered trademarks of their respective companies: BACnet from American Society of Heating, Refrigerating and Air-Conditioning Engineers,
Inc.; Echelon, LonWorks, LonMark, and LonTalk from Echelon Corporation; Modbus from Schneider Electric; and Windows from Microsoft
Corporation.

Introduction

DANGER
The use of unauthorized components, accessories or devices may adversely
affect the operation of the condensing unit and may also endanger life and
property.
The manufacturer disclaims any responsibility for such loss or injury and
the manufacturer’s warranty does not cover any damage or defect to
the air conditioner caused by the attachment or use of any components,
accessories or devices (other than those authorized by the manufacturer)
into, onto or in conjunction with the condensing unit.
DANGER
Dangers indicate a hazardous situation which will result in death or serious
injury if not avoided.
WARNING
Warnings indicate potentially hazardous situations, which canresult in
property damage, severe personal injury, or death ifnot avoided.
CAUTION
Cautions indicate potentially hazardous situations, which can result in
personal injury or equipment damage if not avoided.
This manual contains the installation and operating instructions
for your split condensing unit. There are a few precautions
that should be taken to derive maximum satisfaction from it.
Improper installation can result in unsatisfactory operation or
dangerous conditions.
Read this manual and any instructions packaged with separate
equipment required to make up the system prior to installation.
Give this manual to the owner and explain its provisions. The
owner should retain this manual for future reference.
Checking Product Received
Upon receiving the unit, inspect it for any damage from
shipment. Claims for damage, either shipping or concealed,
should be led immediately with the shipping company.
Check the unit model number, electrical characteristics, and
accessories to determine if they are correct.
Nomenclature
NOTE: For larger size units (greater than 20 ton), refer to Catalog 222.
R C S – 06 – F – 079 – C
Rooftop Condensing System
Nominal capacity (tons)
06 = 6.5
07 = 7.5
10 = 10
12 = 12
15 = 15
20 = 20
Refrigerant
F = R-410A
G = R-410A
Voltage
C = 208/230 - 3 - 60
D = 460 - 3 - 60
Y = 575 - 3 - 60
Compressor
079 = 6.5 ton, single
091 = 7.5 ton, single
121 = 10 ton, single
150 = 12.5 ton, tandem
180 = 15 ton, tandem
240 = 20 ton, tandem
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Standard Unit Features
Cabinet — Galvanized steel with a durable powder paint
nish. Stamped louvered panels o󰀨er 100% protection for the
condenser coil.
Compressor — Hermetically sealed scroll compressors.
Compressors are mounted on rubber-in-shear pads to reduce
vibration and noise.
Condenser Coil — Constructed with copper tubes and
aluminum ns mechanically bonded to the tubes for maximum
heat transfer capabilities. All coil assemblies are leak tested at
450 psig internal pressure.
Refrigerant Connections — Field piping connections are made
through a xed panel. This allows complete access or removal of
access panels after piping connections have been made.
Crankcase Heater — Standard, all models.
Low Ambient Control — A pressure sensitive fan cycling
control to allow unit operation to 0°F is standard.
Service Valves — Standard on liquid lines and vapor lines.
Service Access — The control box, as well as the compressor
and other refrigerant controls, is accessible through access
panels. It may be opened without a󰀨ecting the normal
operation of the unit. Condenser fan motors are accessible by
removing wire grilles.
Filter Drier — Field supplied.
Sight Glass — Optional, eld supplied.
Transformer — Step down type, line to 24 volts.
Contactor — The contactor is an electrical switch which
operates the compressor and condenser fans.
High Pressure Control — Opens the contactor circuit on high
refrigerant pressure; manual reset.
Low Pressure Control — Stops compressor operation in the
event of loss of refrigerant.
Condenser Fan Motor (Direct Drive) — Ball bearing 1075
RPM motors are mounted to minimize vibration and noise
problems.These are permanent split capacitor types and
require the same capacitance for both run and start.
Testing — All units are run tested at the factory prior to shipment.
Units are shipped with a holding pressure of nitrogen.
Figure 1: RCS 06F and 07F Ton Features
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Figure 2: RCS 10G – 20F Ton Features
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Dimensional and Weight Data
Figure 3: RCS 06G and 07G Dimensions and Weights Table 1: RCS 06G and 07G Operating Weights
RCS
model
Total
weight
lbs. [kg]
Corner weight lbs. [kg]
A B C D
06G 291 [132] 50 [22.7] 73 [33.1] 69 [31.3] 99 [44.9]
07G 318 [144] 53 [24.0] 84 [38.1] 71 [32.2] 110 [49.9]
Table 2: RCS 06G and 07G Unit Dimensions
RCS06G RCS07G
Height “H” Inches [mm] 45[1143] 51 [1295]
Length “L” Inches [mm] 35.75 [908] 35.75 [908]
Width “W” Inches [mm] 35.75 [908] 35.75 [908]
Figure 4: RCS 10G and 12F Dimensions and Weights
Table 3: RCS 10G and 12F Operating Weights
RCS
model
Total
weight
lbs. [kg]
Corner weight lbs. [kg
A B C D
10G 557 [253] 137 [62.0] 148 [67.0] 131 [59.0] 142 [64.0]
12F 650 [293] 160 [72.0] 171 [78.0] 154 [70.0] 165 [75.0]
B
A
C
D
CONTROL
PANEL ACCESS
39.94
75.54
72.375
44.75
38.375
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Figure 5: RCS 15F – 20F Dimensions and Weights
Table 4: RCS 15F and 20F Operating Weights
RCS
model
Total
weight
lbs. [kg]
Corner weight lbs. [kg]
A B C D
15F 746 [338.0] 183 [83.0] 196 [89.0] 177 [80.0] 189 [86.0]
20F 952 [432.0] 234 [106.0] 251 [114.0] 226 [103.0] 241 [110.0]
A
D
C
B
CONTROL
PANEL ACCESS
85.515
39.94
83.875
38.375
44.75
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Physical Data
Unit Capacity and Physical Data
Table 5: RCS 06G – 20F Physical Data
Model RCS
06G Single 07G Single 10G Single 12F Tandem 15F Tandem 20F Tandem
Capacity and Weight
Capacity (tons) [kW] 6.5 [22.9] 7.5 [26.4] 10 [35.2] 12 [42.2] 15 [52.8] 20 [70.3]
Number of circuits 1
Operating weight
(lbs) [Kg] 245 [111.1] 307 [139.2] 557 [253.0] 650 [294.8] 746 [338.4] 952 [431.8]
Shipping weight
(lbs) [Kg] 252 [114.3] 313 [141.9] 597 [271.0] 690 [313.0] 786 [356.5] 992 [450.0]
Compressor
Quantity 1 2
Type Scroll
RPM 3500
Capacity Control,
Stages 1 2
Refrigerant charge
R410A oz. [g] 219 [6209] 400 [11340] 437 [12,389] 378 [10,716] 506 [14,345] 655 [18,569]
Condenser Fans
Quantity 123
CFM [L/s] 5700 [2690] 5700 [2690] 8000 [3775] 8100 [3882] 12,000 [5663] 12,000 [5663]
Diameter (in.) [mm 26 [660] 26 [660] 24 [610] 24 [610] 24 [610] 24 [610]
Drive Direct
“Motor horsepower
each [W]” 1/2 [373] 1/2 [373] 1/3 [249] 1/3 [249] 1/3 [249] 1/3 [249]
Type ECM PSC
RPM 975 1075
Condenser Coil
Quantity 1 2
Rows 1 2 3
Fins per inch 22 22 18 22 22 22
Sq. ft. [m2] 28.38 [2.64] 28.38 [2.64] 32.88 [3.05] 33.9 [3.05] 40.38 [3.75] 40.38 [3.75]
Fins/tubes Aluminum/Copper
Cabinet
Finish Powder Coat
Sheet metal Galvanized
Gauge (nominal) top 20
Sides 20
Base rails 14
Refrigerant Connection
Vapor sweat
(in.) [mm] 1-1/8 [29] 1-1/8 [29] 1-3/8 [35] 1-3/8 [35] 1-5/8 [41.3] 1-5/8 [41.3]
Liquid sweat
(in.) [mm] 1/2 [13] 1/2 [13] 5/8 [16] 5/8 [16] 5/8 [16] 7/8 [22]
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Electrical Data
Power Wiring
Table 6: RCS 06G – 20F Electrical Data
Model RCS
06G 07G 10G 12F 15F 20F
Compressor Motor
Voltage 208/230 460- 208/230 460 208/230 460 208/230 460 575 208/230 460 575 208/230 460 575
Phase and hertz 3 – 60
Number of
compressors 1 2
Operating Current
Rated load amps
(each)125 11.8 27.9 13.6 32.6 14.8 22 .4 10 .6 7 .7 25 .0 12 .2 9 .0 33 .3 17 .9 12 .8
Locked rotor amps
(each)1 149 83 164 100 225 240 130 75 54 164 100 78 239 125 80
Condenser Fan Motors
Voltage 208/230 460 208/230 460 208/230 460 208/230 460 575 208/230 460 575 208/230 460 575
Phase Single
Full load amps
(each) 5.3 2.2 5.3 2.2 3.5 1.6 2 .4 1 .4 1 .0 2 .4 1 .4 1 .0 2 .4 1 .1 0 .8
System Characteristics
Unit full load amps227.7 15.9 30.3 17.5 34 .9 19 .5 49 .6 24 .0 17 .4 57 .2 28 .6 21 .0 73 .8 39 .1 28 .0
Minimum circuit
ampacity 34.0 19.0 37.0 21.0 48.0 22.0 56 .0 27 .0 20 .0 64 .0 32 .0 24 .0 83 .0 44 .0 32 .0
Maximum fuse size
(amps) or HACR
circuit breaker
ampacity3
50 25 60 30 80 40 70 35 25 80 40 30 110 60 40
Disconnect size 60 30 60 30 100 60 60 30 30 100 60 60 200 60 60
NOTE:
1. Each compressor
2. Conditions at 45° suction and 95° ambient
3. Local codes take precedent over recommended fuse size
Figure 6: Control Box Example – RCS 10G Through 20F
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Installation
Order Parts
When reporting shortages or damaged parts, or when ordering
repair parts, give the complete unit model and serial numbers
which are stamped on the unit rating plate.
Standard Items
The condensing unit consists of a completely assembled
package which includes a compressor pack, condenser coils,
fans, fan motors, outdoor control box, factory wiring, factory
tubing and ttings.
Crankcase Heaters
These units are equipped with a crankcase heater that is
factory wired to operate whenever the main power supply to
the unit is “ON” and compressors are “OFF.” Before starting
the equipment after prolonged shutdown or at the time of initial
spring startup, be sure that the circuits to the condensing units
are closed for at least 24 hours.
Corrosive Environment
The metal parts of this unit may be subject to rust or
deterioration if exposed to a corrosive environment. This
oxidation could shorten the equipment’s useful life. Corrosive
elements include salt spray, fog or mist in seacoast areas,
sulphur or chlorine from lawn watering systems, and various
chemical contaminants from industries such as paper mills and
petroleum reneries.
If the unit is to be installed in an area where contaminants are
likely to be a problem, special attention should be given to the
equipment location and exposure.
• Avoid having lawn sprinkler heads spray directly on the
unit cabinet
• In coastal areas, locate the unit on the side of the building
away from the waterfront.
• Shielding provided by a protection, based on clearances
DANGER
Disconnect all power to unit before starting maintenance. Failure to do so
can cause electrical shock resulting in severe personal injury or death.
Regular maintenance will reduce the buildup of contaminants
and help to protect the unit’s nish.
• Frequent washing of the cabinet, fan blade and coil
with fresh water will remove most of the salt or other
contaminants that build up on the unit.
• Regular cleaning and waxing of the cabinet with a good
automobile polish will provide some protection.
• A good liquid cleaner may be used several times a year
to remove matter that will not wash o󰀨 with water.
Several di󰀨erent types of protective coatings are o󰀨ered in
some areas. These coatings may provide some benet, but the
e󰀨ectiveness of such coating materials cannot be veried by
the equipment manufacturer.
Installation General
The condensing unit should be installed outdoors. It should be
located as near as possible to the evaporator section to keep
connecting refrigerant tubing lengths to a minimum. The unit
must be installed to allow a free air ow to the condenser coils
If several units are installed adjacent to each other, take care to
avoid recirculation of air from one condenser to another. In all
installations, adequate space must be provided for installation
and servicing.
The unit must not be connected to any duct work. Do not
locate unit under a roof drip; if necessary, install gutters, etc., to
prevent water runo󰀨 onto the unit. To prevent air recirculation,
it is recommended that the unit not be installed under an
overhang. However, if this is necessary, allow a minimum of
60” above the unit for air discharge
Figure 7: Clearances RCS 06G – 20F Service Clearances
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