AIREDALE CSD 18 User manual

AIR 8-105.5
September, 2012
The SLIMLINE PERFORMER Ceiling Cassette
Ductless Mini-Split Models CSD, CSH and CCW
TECHNICAL MANUAL
3087217

Ceiling Cassette
2 The SLIMLINE PERFORMER Ceilin
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Technical Manual : AIR 8-105.5
Introduction
INTRODUCTION The Airedale Cassette units effectively make each area served an independent controlled
temperature zone. Through thermostatic control of operations, conditions can be varied to
suit diverse requirements or activities. Optional fresh air intakes are available to provide for
ventilation and recirculation of room air.
Airedale Cassettes are available in a choice of three models – DX cooling and heat pumps
in five model sizes and chilled water cooling in six model sizes – to properly match units to
job requirements. Optional heating can be provided by factory installed electric heat or hot
water modules, depending on model. This versatility eliminates compromising architecture
or design. Important cost savings are often realized during building modernizations, as
existing piping and/or wiring can frequently be reused.
Design techniques are incorporated in every Airedale Cassette to reduce noise levels to an
absolute minimum. These techniques include low blower speeds, rigid panel and cabinet
construction, and sound-absorbent cabinet insulation.
For individual comfort, Airedale Cassettes are available with electro-mechanical or micro-
processor based controls. The micro-processor controller includes an infrared transmitter
which enables room conditions to be maintained at a user defined set point. Airedale
Cassettes are also available with Carel microprocessor controls and network cards to allow
units to be connected to a Building Management System.
Table of Contents Page
Model Identification…………………………………………………………………………………………….................. 3
General Description
Standard Features…………………………………………………………………………………………………………... 3
Options………………………………………………………………………………………………….……………..……... 4
Accessories…………………………………………………………………………………………….……………..……... 5
Capacity Data
Air Conditioning and Heat Pump Units…………………………………………………………………………………… 6
Chilled Water Units…………………………………………………………………………………………………………. 7
Optional Water Coil and Two Pipe Systems…………..……………………………………………………………….… 8
Dimensional Data
Small Chassis – CCW2/8, and CCW2/12……………………………………………………………………….............. 9
Medium Chassis – CCW 18 and CCW 20………………………………….…………………………………………….. 10
Large Chassis – CCW 33 and CCW 36………………………………….……………………………………………….. 11
Medium Chassis – CSD/CSH 18 and CSD/CSH 24……..……………...…….………….…………………………….. 12
Large Chassis – CSD/CSH 30, CSD/CSH 36 and CSD/CSH 42…….…….………………………………………….. 13
Technical Data
Technical Data – Air Conditioning and Heat Pump Units ……………………………………………………………… 14
Technical Data – Chilled Water Units ……………………………………………………………………………………. 15
Technical Data – Condensers for Air Conditioning Unit Systems…………….……………………………………….. 16
Technical Data – Condensers for Heat Pump Unit Systems………………….……………………………………….. 17
Electrical Data ………………………………………………………………………………………………………………. 18-19
Sound Data ………………………………………………………………………………………………………………….. 19-20
Condenser Information
Features – Air Conditioning System Condenser Units……………….…………………………………………………. 21-22
Features – Heat Pump System Condenser Units……………………….………………………………………………. 23
Airedale has a continuous product improvement program and therefore reserves the right to change design and
specifications without notice.

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General Description
MODEL
IDENTIFICATION CEILING CASSETTE UNITS
CSD, CSH
or CCW
Base Model:
CSD = Ceiling Cassette Unit – DX Cooling
CSH = Ceiling Cassette Unit – Heat Pump
CCW = Ceiling Cassette Unit – Chilled Water
2/ or _ (blank)
Cabinet Size:
2/ = Small Body (2 X 2 Series)
_ = Medium Body (3 X 3 Series) or Large Body (3 X 4 Series)
8 to 42
Model Size:
Nominal Cooling in Mbh (See Performance Data for Details)
EM, MC or CA
Control Type:
EM = Electro-Mechanical Control
MC = Microprocessor Controlled – Remote Control via Infrared or Pendant
CA = Carel Controller
Example:
CSD 18EM =
Ceiling Cassette Unit, DX Cooling, 18,000 Nominal BTU/Hr,
Electro-Mechanical Control
STANDARD FEATURES
Construction Cases are manufactured from lightweight galvanized sheet steel with integral fan mounting
rails for added strength. Fire resistant foam insulation (to UL94 VO) is fitted internally to
provide both thermal and acoustic insulation.
Evaporator All direct expansion units include a factory installed thermal expansion valve and utilize large
surface area evaporator coils ideally positioned to optimize heat transfer and airflow. Each
evaporator is manufactured from refrigeration quality copper tubes with mechanically bonded
aluminum fins.
Chilled Water Coil All chilled water units utilize large surface area coils positioned to optimize heat transfer and
airflow. Each coil is manufactured from refrigeration quality copper tubes with mechanically
bonded aluminum fins and are circuited from headers to ensure low water pressure drops.
Fan All units, utilizing backward curved centrifugal fans, are staticly and dynamically balanced for
quiet operation. Fan impellers are made from either aluminum or fire retardant plastic (UL94
VO) for light weight and corrosion resistant operation. Fans are driven by an enclosed multi-
speed external rotor motor allowing good heat dissipation and an increased motor efficiency.
Fans come complete with thermal overload protection and sealed-for-life lubricated bearings.
Filtration Wire framed filters are fitted. These are re-usable and may be vacuum cleaned.
Condensate Pump A condensate pump and check valve are fitted to carry water out of the unit and stop water
from flowing back into the condensate tray. The pump is fixed to a mounting bracket which
can be withdrawn from the side of the chassis and incorporates an inspection hole to allow a
visual check of the pump during operation. A float switch is fitted to stop the cooling action
should the pump become blocked or fail.
Air Vanes Air outlet vanes are designed to prevent condensation from forming. Vanes are manually
adjustable on the 2 x 2 model units but driven by an electric motor on all other model units.
Where fitted, the motorized air vanes can be set to auto sweep or can be stopped in a fixed
position. Polystyrene blanking pieces are supplied with Cassette packing so that up to two
fascia discharge slots can be blanked off.
Alarm Status Relay The unit shall include a relay for unit failure notification. Normally open contact available for
field connection.
Start / Stop Terminals The unit shall include terminals for remote start/stop of the unit. The unit is enabled when
contact between the terminals is closed. (only on Electro-Mechanical controls)

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Ceiling Cassette
General Description
FACTORY INSTALLED OPTIONS
Controls Option 1:
Electro-Mechanical
The unit shall be factory wired with an electo-mechanical control system that includes the necessry
relays and safety switches for proper unit operation. Terminal strip provide at the unit for the wiring of a
24V wall mounted thermostat required for unit operation.
Controls Option 2:
Microprocessor
A custom designed microprocessor is fitted to the Airedale Cassette to enable room conditions to be
maintained at a user defined set point. Communication to the controller is by a hand held infrared
transmitter or a wall mounted ‘pendant’ transmitter. Each type of transmitter includes a wall mounting
bracket as standard.
Note: Units with Microprocessor controls can not be connected to a BMS. Select the Electro-Mechanical
controls option, for field installed BMS interface, or the Carel controller version with optional
Lonworks and BACnet network cards.
The microprocessor allows five operating modes: fan only, dry cooling, cooling only, heating only, and
heating/cooling with auto changeover for maximum versatility. A temperature set point between 58ºF and
90ºF can be selected.
The microprocessor monitors indoor coil temperature and return air temperature. The receiver contains a
self diagnostic feature. When a low indoor coil temperature is detected the cooling action is stopped. If a
sensor fails then an alarm is displayed on the fascia mounted receiver. The microprocessor also limits
the number of compressor starts per hour to reduce wear on the compressor.
The infrared/pendant transmitter is used to switch the unit ON/OFF, change temperature settings, fan
speed, operating mode, and to toggle the motorized air sweep (where fitted). The microprocessor also
has a built-in clock which can be activated to enable the unit to be programmed with up to two separate
operating periods on weekdays (Mon-Fri).
The clock provides ON/OFF unit operation and is not a night set back or occupied/unoccupied control
function. Mon-Fri will operate as a ‘block’ of days and cannot be programmed independently of one
another. Saturdays and Sundays can each be programmed with up to two separate operating periods
and are programmed independently of the weekdays and each other.
A fascia mounted receiver displays ON/OFF, cool or heat, and timer/alarm status.
Controls Option 3:
Carel Controller
The unit shall be fitted with a programmable microprocessor controller designed to operate the unit
according to pre-engineered control strategies. The Carel controller requires a wall sensor, wall stat or
network interface card.
LonWorks Card for
Carel Controller
The Carel microprocessor controller shall come equipped with a plug-in card allowing for complete
compatibility with FT-10 LonWorks control system.
BACnet Card for Carel
Controller
The Carel microprocessor controller shall come equipped with a plug-in card allowing for complete
compatibility with an MS/TP BACnet control system.
Time Clock Card for
Carel Controller
A time clock (card) shall be provided for “stand-alone” units where time functions, night and weekend
setback, etc. are not transmitted from a building management system or remote central time clock. The
time clock shall have a full 7 day schedule and calendar function incorporated. The 7 day schedule shall
have two adjustable occupied/unoccupied periods per day. The calendar function shall allow 20
calendar periods (start date / stop date = 1 period).
Electric Heat Electric heating elements will be factory fitted to the unit. Elements are manufactured for maximum
surface area and lower working temperature for improved reliability. Thermal cut out protection switches
are fitted to the electric heat circuit to protect against overheating.
Hot Water Coil A hot water heating coil will be factory fitted (depending on unit size) in addition to the standard DX or
chilled water coil to provide heating. The coil is manufactured from refrigeration quality copper tubes with
mechanically bonded aluminum fins.
Hot Water Coil Freeze
Protection
The unit shall be fitted with a freeze protection sensor to prevent freezing of the hot water coil assembly.
When the sensor detects a freeze up condition it will force the flow control valve open and prevent the
unit fan(s) from running.
Disconnect Switch The unit shall be fitted with a power disconnect switch located on the control panel, sized for the full load
amperage of the unit to enable the unit to be disconnected from the power supply prior to any
maintenance.
Step Up Transformer The unit shall be fitted with a 115V to 230V step up transformer for 115V supply power. Note: This
option is not available for units with Electric Heat.
Wall Mounted Pendant The unit shall include a wall mounted pendant for communication to the microprocessor controller. The
pendant replaces the standard infrared remote control.

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FIELD INSTALLED ACCESSORIES
Thermostats Aquastat
Mechanical thermostat: cooling only
Mechanical thermostat with manual changeover: cooling + 1 stage of heat
Digital thermostat with auto changeover: up to 2 stages of cooling and heating
Digital programmable thermostat with auto changeover: up to 2 stages of cooling and heating
Carel Wall Sensor For units fitted with the Carel microprocessor controller, a temperature sensor and set point adjustment
module with overrride button shall be mounted on the wall.
Carel Wall Stat For units fitted with the Carel microprocessor controller, a digital thermostat shall be mounted on the
wall.
Display Module For units fitted with the Carel microprocessor controller, a hand-held display module shall be supplied for
set point changes, control adjustments and unit troubleshooting. Note: at least one display module per
facility is recommended.
Spare Filters One set of replacement filters.
Fresh Air Duct Collars The Cassette chassis features two or three fresh air knockouts depending on model size. Any number
can be removed to allow fresh air to enter the unit. A duct collar is available for fastening to the unit to
allow connection of a 3” flexible duct. A replacement filter is included with fresh air duct collars to aid in
balancing the amount of return air and fresh air delivered to the unit’s coil.
Supply Air Duct Collars A limited amount of conditioned air can be ducted from the unit by removing the branch duct knockouts
(up to 2 per unit) and connecting flexible ducting. In the case of the 2 x 2 model units, there are a total of
three knockouts positioned on three of the unit sides (one per side). In the case of the other model units,
a total of four knockouts are available and are arranged in pairs along two of the unit sides (two per
side). A duct collar is available to allow connection of a 5” or 6” (depending on units size) flexible duct to
the Cassette.
On the 2 x 2 range of units, it is recommended that only one of the three branch duct knockouts are
utilized, due to the small capacity of the unit.
Shroud A sheet metal shroud is available to cover the unit housing when the unit is not mounted in a drop
ceiling. Painted Sky White with hammertone finish.
Two Position Spring
Return Control Valves
For control of chilled water or hot water flow, a three-way, three-port diverting type valve or a two-way,
two-port control valve is supplied loose for on site installation. Actuation is via a 24V signal from the
unit’s electrical panel.
On a four pipe system where two-way valves are specified, the chilled water valve will be a normally
closed type. The hot water valve will be a normally open type. Where three-way valves are specified, the
same type valve will be supplied for both coils and should be installed normally closed to the coil in the
case of the chilled water coil and normally open to the coil in the case of the hot water coil.
On a two pipe changeover system where a two-way valve is specified, a normally closed valve is
supplied. Where a three-way valve is specified, this should be installed normally closed to the coil. In
both cases, a pipe mounted changeover thermostat is recommended to monitor water supply
temperature and allow action of the valve accordingly.
V
alve Packages: Two
Position Spring Return
Control Valve with Two
Shut-Off Valves
For control of chilled water or hot water flow, a three-way, three-port diverting type valve piped with two
shut- off valves and a bypass leg, or a two-way, two-port control valve piped with a shut-off valve and a
second separate shut-off valve is supplied loose for on site installation. Actuation is via a 24V signal from
the unit’s electrical panel.
On a four pipe system where two-way valves are specified, the chilled water valve will be a normally
closed type. The hot water valve will be a normally open type. Where three-way valves are specified, the
same type valve will be supplied for both coils and should be installed normally closed to the coil in the
case of the chilled water coil and normally open to the coil in the case of the hot water coil.
On a two pipe changeover system where a two-way valve is specified, a normally closed valve is
supplied. Where a three-way valve is specified, this should be installed normally closed to the coil. In
both cases, a pipe mounted changeover thermostat is recommended to monitor water supply
temperature and allow action of the valve accordingly.
Low Ambient Kit Fan speed control for compressor operation down to 0°F outside temperature.

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Table 6.1 – Cooling Performance – DX Cooling Only and Heat Pump Units
Entering Air
DB ºF @
50% RH
Fan Speed
High Medium Low
TC SC TC SC TC SC
Model BTU/h BTU/h BTU/h BTU/h BTU/h BTU/h
72 16500 14400 16300 13900 15800 13100
CSD/CSH 18 75 17500 14900 17200 14400 16800 13500
80 19200 15600 18900 15100 18500 14200
72 20000 16800 19600 16100 19300 15600
CSD/CSH 24 75 21000 17300 20600 16500 20400 16000
80 23000 18000 22600 17200 22200 16700
72 27600 25000 27000 23600 26400 22200
CSD/CSH 30 75 29000 25800 27600 25000 27800 22800
80 31400 27000 31000 25400 30200 23800
72 33400 28400 33000 27600 32200 26200
CSD/CSH 36 75 35000 29200 34600 28200 34000 26800
80 38200 30400 37800 29400 37000 27800
72 37800 31600 37200 30200 36800 29400
CSD/CSH 42 75 39500 32400 39000 31000 38500 30000
80 42500 33400 42000 32000 41500 31000
Table 6.2 – Heating Performance – Heat Pump Units
Entering Air
DB ºF
Fan Speed
High Medium Low
Model TC BTU/h TC BTU/h TC BTU/h
50 19100 18900 18600
CSH 18 60 17800 17600 17200
70 16400 16200 16000
50 24400 24000 23800
CSH 24 60 22800 22600 22200
70 21400 21000 20800
50 30400 30200 29800
CSH 30 60 29000 28800 28200
70 27400 27200 26800
50 35800 35600 35000
CSH 36 60 34200 33800 33400
70 32400 32000 31600
50 39500 39000 39000
CSH 42 60 38200 37800 37800
70 37200 36800 36600
Notes:
1. TC = Total Cooling Capacity
2. SC = Sensible Cooling Capacity
3. Cooling capacities are based on 95/75ºF DB/WB Outdoor ambient.
4. Heating capacities are based on 47/43ºF DB/WB Outdoor ambient.

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Table 7.1 – Performance – DX Cooling Only Units
Model
Cooling
BTU/h SEER
CSD 18 21500 13
CSD 24 25400 13
CSD 30 34800 13
CSD 36 41800 13
CSD 42 45500 13
Table 7.2 – Performance – Heat Pump Units
Model
Cooling
BTU/h
Heating
BTU/h SEER HSPF
CSH 18 21500 16400 13 7.7
CSH 24 25400 21400 13 7.7
CSH 30 34800 27400 13 7.7
CSH 36 41800 32400 13 7.7
CSH 42 45500 37000 13 7.7
Notes:
Test conditions based on ARI210/240.
1. Cooling capacities are based on 80/67°F DB/WB Indoor and 82/65ºF DB/WB Outdoor ambient.
2. Heating capacities are based on 70/60°F DB/WB Indoor and 47/43°F DB/WB Outdoor ambient.
3. All duties based on high fan speed except where stated otherwise.
Table 7.3 – Cooling Performance – Chilled Water Units
Entering
Air
DB ºF @
50% RH
Chilled Water Inlet/Outlet ºF
40/50ºF 45/55ºF
TC SC Flow Pr Drop TC SC Flow Pr Drop
Model BTU/h BTU/h gpm PSI BTU/h BTU/h gpm PSI
72 5,236 5,156 1.1 2.4 3,999 3,999 0.8 1.5
CCW2/8 75 6,528 5,989 1.3 3.5 4,729 4,729 1.0 2.0
80 10,037 7,529 2.0 7.6 7,026 6,107 1.4 4.0
72 8,723 7,261 1.8 1.9 5,623 5,623 1.1 0.9
CCW2/12 75 10,831 8,173 2.2 2.7 7,502 6,604 1.5 1.4
80 14,435 9,644 2.9 4.6 11,236 8,200 2.3 2.9
72 13,728 12,126 2.8 1.9 9,295 9,295 1.9 0.9
CCW 18 75 17,478 13,840 3.5 2.8 11,447 10,853 2.3 1.4
80 24,588 16,659 4.9 5.1 18,432 13,900 3.7 3.1
72 14,810 13,098 3.0 2.1 10,103 10,103 2.0 1.1
CCW 20 75 18,956 14,985 3.8 3.3 12,341 11,716 2.5 1.5
80 26,569 18,022 5.3 5.9 19,971 15,041 4.0 3.6
72
23,570 20,321 4.7 3.5 15,695 15,695 3.2 1.7
CCW 33 75 29,100 22,928 5.8 5.1 19,912 18,365 4.0 2.7
80 41,598 28,029 8.3 9.6 30,595 23,129 6.1 5.6
72 27,054 23,385 5.4 4.5 18,066 18,066 3.6 2.2
CCW 36 75 33,895 26,690 6.8 6.7 22,721 21,074 4.6 3.3
80 47,991 32,334 9.6 12.5 35,934 26,916 7.2 7.5
1. TC = Total Cooling Capacity
2. SC = Sensible Cooling Capacity
3. All duties based on high fan speed.
4. Pressure drops are coil only, excluding valves.

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Table 8.1 – Heating Performance – Chilled Water Units with Optional Hot Water Coil
Hot Water 180ºF Inlet / 160ºF Outlet
Entering Air Heating Capacity Flowrate Pressure Drop
Model DB ºF @ 50% RH BTU/h GPM PSI
50 16,819 1.8 3.9
CCW2/8 60 15,292 1.6 3.3
70 13,799 1.4 2.7
CCW2/12 N/A N/A N/A N/A
50 35,763 3.7 3.4
CCW 18 60 32,480 3.4 2.9
70 29,258 3.1 2.4
50 37,938 4.0 3.7
CCW 20 60 34,401 3.6 3.2
70 30,946 3.2 2.7
50 55,683 5.8 4.0
CCW 33 60 51,120 5.3 3.5
70 46,555 4.9 3.0
50 62,005 6.5 4.8
CCW 36 60 56,762 5.9 4.1
70 51,600 5.4 3.5
Table 8.2 – Heating Performance DX Cooling Only and Heat Pump Units with
Optional Hot Water Coil
Hot Water 180ºF Inlet / 160ºF Outlet
Entering Air Heating Capacity Flowrate Pressure Drop
Model DB ºF @ 50% RH BTU/h GPM PSI
50 46,389 4.8 1.3
CSD/CSH 18 60 42,598 4.4 1.1
70 38,746 4.0 0.9
50 50,279 5.3 1.5
CSD/CSH 24 60 46,153 4.8 1.2
70 41,993 4.4 1.0
50 67,912 7.1 3.3
CSD/CSH 30 60 62,277 6.5 2.8
70 56,609 5.9 2.3
50 71,636 7.5 3.6
CSD/CSH 36 60 65,640 6.9 3.1
70 59,600 6.2 2.6
50 77,386 8.1 4.2
CSD/CSH 42 60 70,803 7.4 3.5
70 64,268 6.7 3.0
Notes:
1. All duties based on high fan speed.
2. Pressure drops are coil only, excluding valves.

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Table 9.1 – Heating Performance – Chilled Water Units – Two Pipe Changeover
Hot Water 180ºF Inlet / 160ºF Outlet
Entering Air Heating Capacity Flowrate Pressure Drop
Model DB ºF @ 50% RH BTU/h GPM PSI
50 28,389 3.0 11.0
CCW2/8 60 25,903 2.7 9.4
70 23,605 2.5 8.0
50 33,471 3.5 4.6
CCW2/12 60 30,715 3.2 4.0
70 27,995 2.9 3.4
50 60,388 6.3 5.7
CCW 18 60 55,127 5.8 4.8
70 49,706 5.2 4.0
50 65,350 6.8 6.5
CCW 20 60 59,887 6.3 5.6
70 54,118 5.7 4.7
50 99,476 10.4 10.1
CCW 33 60 91,494 9.6 8.8
70 82,986 8.7 7.4
50 114,225 11.9 13.0
CCW 36 60 105,132 11.0 11.2
70 95,896 10.0 9.5
Notes:
1. All duties based on high fan speed.
2. Pressure drops are coil only, excluding valves.

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Figure 10.1 – Dimensions – Small Chassis
Model CCW2/8 and CCW2/12
25 3/16
25 3/16
1 11/16
22 1/2
11 1/4
2 3/4
10 11/16
19 9/16
19 1/2
12 9/16
1 7/16
22 15/16
7/8
22 1/2
8 13/16
11 5/16
4 11/16
3 11/16
2 5/8
O 5 3/16
6 1/2
5 1/8
3 3/4 2 1/16
2 5/8
A
A
VIEW A-A
9 13/16
1 1/8
2 3/4
5
7
8
9
5
10
6
1. CW Inlet
2. CW Outlet
3. HW Coil Inlet (Optional)
4. HW Coil Outlet (Optional)
5. Branch Duct Opening (x3)
6. Fresh Air Intake (x2)
7. Pump Inspection Port
8. Condensate Drain
9. Control Panel
10. Mounting Bracket
1 2
3
4
3 3/8
3 5/8

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Figure 11.1 – Dimensions – Medium Chassis
Model CCW 18 and CCW 20
37
37
11/16
32 3/8
2 3/4
9 1/2
2 5/8
28 11/16
31 3/8
28 9/16
12 9/16
1 13/16
4 5/8
6
8 5/8
1 5/8
5 5/16 7 3/4
2 3/4 2 3/4
4 7/8
4 15/16
32 5/16
5 3/8
3 3/16
1 5/16
3
8 13/16
8 11/16
11 13/16
3 1/8
7 13/16
2 3/4
VIEW A-A
A
A
2
5
1
4
10
5
6
7
8
9
3
5 3/8
1. CW Coil Inlet
2. CW Coil Outlet
3. HW Coil Inlet (Optional)
4. HW Coil Outlet (Optional)
5. Fresh Air Intake (x3)
6. Branch Duct Opening (x4)
7. Pump Inspection Port
8. Condensate Drain
9. Control Panel
10. Mounting Bracket

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Figure 12.1 – Dimensions – Large Chassis
Model CCW 33 and CCW 36
A
A
VIEW A-A
49 3/16
37
2 1/4
32 3/8
4 3/4
11 1/2
2 5/8
28 11/16
12 9/16
28 9/16 1 7/8
43 1/2
7/8
8 13/16
19 5/8
12 7/16
6 3/8
3 5/8
3 3/8
3
6
4 5/8
7 3/16
2 3/16
4 3/4
7 9/16
9 13/16
1 5/8
4 7/8
2 3/4
2 3/4
3 1/8
9 13/16
2 3/4
5
10
2
5
4
3
1
6
7
9
8
1. CW Coil Inlet
2. CW Coil Outlet
3. HW Coil Inlet (Optional)
4. HW Coil Outlet (Optional)
5. Fresh Air Intake (x3)
6. Branch Duct Opening (x4)
7. Pump Inspection Port
8. Condensate Drain
9. Control Panel
10. Mounting Bracket

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2 3/4
2 3/4
4 7/8
9 13/16
3
12 1/16
10
32 5/16
6 1/4
6 5/16
4 3/8
8 13/16
3 1/8
2 3/4
9 13/16
4 1/16
5 1/16
5 3/4
1 5/8
2 3/4
4 7/8
3 7/16
A
A
VIEW A-A
6
7
8
9
5
5
1
2
4
3
10
1. DX Suction Line
2. DX Liquid Line
3. HW Coil Inlet (Optional)
4. HW Coil Outlet (Optional)
5. Fresh AIr Intake (x3)
6. Branch Duct Opening (x4)
7. Pump Inspection Port
8. Condensate Drain
9. Control Panel
10. Mounting Bracket
31 3/8
1 7/828 9/16
12 9/16
28 11/16
32 3/8
4 3/4
11 5/8
2 5/8
37
37
11/16
Figure 13.1 – Dimensions – Medium Chassis
Model CSD/CSH 18 and CSD/CSH 24

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49 3/16
1 1/8
37
4 3/4
2 5/8
11 1/2
32 3/8
28 11/16
12 9/16
28 9/16 1 7/8
9 13/16
2 3/4
4 13/16
2 3/4
6 3/8
6 3/8
4 3/8
3
15
15
3 1/8
2 3/4
9 13/16
VIEW A-A
A
A
8 13/16
2 7/8
2 7/8
4 7/8
6 5/16 4 7/16
2 7/8
3 1/2
4 7/8
6 7/16
1
2
3
4
9
7
8
6
10
5
5
43 1/2
44 7/16
1. DX Suction Line
2. DX Liquid Line
3. HW Coil Inlet (Optional)
4. HW Coil Outlet (Optional)
5. Fresh AIr Intake (x3)
6. Branch Duct Opening (x4)
7. Pump Inspection Port
8. Condensate Drain
9. Control Panel
10. Mounting Bracket
Figure 14.1 – Dimensions – Large Chassis
Model CSD/CSH 30, CSD/CSH 36 and CSD/CSH 42

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Table 15.1 – Technical Data – DX Cooling Only and Heat Pump Units
Units CSD/CSH 18 CSD/CSH 24 CSD/CSH 30 CSD/CSH 36 CSD/CSH 42
Nominal Cooling Capacity (1) BTU/h 19200 23000 31400 38200 42500
Nominal Heating Capacity (2) BTU/h 16400 21400 27400 32400 37200
Nominal System SEER (3) 13 13 13 13 13
HSPF 7.7 7.7 7.7 7.7 7.7
Construction
Material: Fascia High Impact Polystyrene
Material: Chassis Galvanized Steel
Color: Fascia Pearl Grey
Fire rating UL94 VO
Evaporato
r
Type Finned Tube
Quantity 1 1 1 1 1
Face Area Ft² 4.0 4.0 5.2 5.2 5.2
Nominal Airflow High cfm 590 670 920 1000 1130
Med cfm 540 590 800 920 1000
Low cfm 465 540 680 800 920
Discharge 4-way 4-way 4-way 4-way 4-way
Fan
Type Centrifugal
Quantity 1 1 2 2 2
Diameter in 14 14 14 14 14
Horsepower (per fan) HP 1/8 1/8 1/8 1/8 1/8
Refrigeration
Number of Circuits 1 1 1 1 1
Refrigerant Type R-410A R-410A R-410A R-410A R-410A
Weights
Weight - Chassis lb 66 66 97 97 97
Weight - Fascia lb 18 18 21 21 21
Connections (4)
Suction in 3/4 3/4 3/4 3/4 3/4
Liquid in 3/8 3/8 3/8 3/8 3/8
Condensate (ID) in 3/8 3/8 3/8 3/8 3/8
Filtration
Type Wire Framed Periframe
Quantity 2 2 3 3 3
Arrestance 80% 80% 80% 80% 80%
Condensate Pump
Maximum Head in 30 30 30 30 30
Nominal Flowrate gpm 0.1 0.1 0.1 0.1 0.1
Options
Electric Heating Capacity kW 3.0 3.0 5.0 5.0 5.0
HW Heating Capacity (5) BTU/h 38,746 41,993 56,609 59,600 64,268
HW Coil Connection (OD) in 7/8 7/8 7/8 7/8 7/8
Max Branch Duct Connections (qty) 2 2 2 2 2
Branch Duct Diameter in 5 5 6 6 6
Branch Duct Air Volume (6) cfm 115 130 180 200 220
Fresh Air Connections (qty) 1-3 1-3 1-3 1-3 1-3
Fresh Air Duct Diameter in 3 3 3 3 3
Fresh Air Volume (7) cfm 60 65 85 90 95
(1) Nominal cooling capacity based on 80/67°F DB/WB and 95/75ºF DB/WB ambient
(2) Nominal heating capacity based on 70/60°F DB/WB and 47/43°F DB/WB ambient.
(3) Test conditions based on ARI 210/240.
(4) Refrigerant line sizes should always match condensing unit connection sizes.
(5) Nominal heating capacity based on 70/60°F DB/WB and water temperature of 180ºF inlet / 160ºF outlet.
(6) Maximum air volume available through one branch duct 6' long, with Cassette fan(s) at high speed and corresponding fascia
aperture closed.
(7) Maximum fresh air through all knockouts connected to one 10' long duct with fan at high speed.

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Table 16.1 – Technical Data – Chilled Water Units
Units CCW2/8 CCW2/12 CCW 18 CCW 20 CCW 33 CCW 36
Nominal Cooling Capacity (1) BTU/h 6,601 11,091 17,592 19,087 29,722 35,258
Construction
Material: Fascia High Impact Polystyrene
Material: Chassis Galvanized Steel
Color: Fascia Pearl Grey
Fire rating UL94 VO
Chilled Water Coil
Type Finned Tube
Quantity 1 1 1 1 1 1
Face Area Ft² 1.8 1.8 2.8 2.8 5.2 5.2
Nominal Airflow High cfm 350 350 630 700 970 1160
Med cfm 300 300 530 630 890 970
Low cfm 260 260 500 530 785 890
Discharge 4-way 4-way 4-way 4-way 4-way 4-way
Unit water Volume gal 0.29 0.29 0.45 0.45 0.79 0.79
Fan
Type Centrifugal
Quantity 1 1 1 1 2 2
Diameter in 12 12 15 15 14 14
Horsepower (per fan) HP 1/8 1/8 1/8 1/8 1/8 1/8
Weights
Weight - Chassis lb 40 40 64 64 97 97
Weight - Fascia lb 5 5 18 18 21 21
Connections
Chilled Water Inlet in 5/8 5/8 7/8 7/8 7/8 7/8
Chilled Water Outlet in 5/8 5/8 7/8 7/8 7/8 7/8
Condensate (ID) in 3/8 3/8 3/8 3/8 3/8 3/8
Filtration
Type Wire Framed Periframe
Quantity 1 1 2 2 3 3
Arrestance 80% 80% 80% 80% 80% 80%
Condensate Pump
Maximum Head in 30 30 30 30 30 30
Nominal Flowrate gpm 0.1 0.1 0.1 0.1 0.1 0.1
Options
Electric Heating Capacity kW 1.5 1.5 3.0 3.0 5.0 5.0
HW Heating Capacity (2) BTU/h 13,799 N/A 29,258 30,946 46,455 51,600
HW Coil Connection (OD) in 5/8 N/A 5/8 5/8 5/8 5/8
Max Branch Duct Connections (qty) 2 2 2 2 2 2
Branch Duct Diameter in 5 5 5 5 6 6
Ducted Air Volume (3) cfm 80 80 100 125 200 220
Fresh Air Connections (qty) 1-2 1-2 1-3 1-3 1-3 1-3
Fresh Air Duct Diameter in 3 3 3 3 3 3
Fresh Air Volume (4) cfm 40 40 60 65 90 95
(1) Nominal cooling capacity based on 80/67°F DB/WB and water temperature of 45ºF inlet / 55ºF outlet.
(2) Nominal heating capacity based on 70/60°F DB/WB and water temperature of 180ºF inlet / 160ºF outlet.
(3) Maximum air volume available through one branch duct 6' long, with Cassette fan(s) at high speed and corresponding fascia
aperture closed.
(4) Maximum fresh air through all knockouts connected to one 10' long duct with fan at high speed.

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Table 17.1 – Technical Data – Condensers for DX Cooling Only Units
Cassette Unit
CSD 18 CSD 24 CSD 30 CSD 36 CSD 42
Units
Condenser Model
YCJD18 YCJD24 YCJD30 YCJD36 YCJD42
Performance
Nominal System Cooling Capacity BTU/h 18,000 24,000 30,000 36,000 42,000
Nominal System SEER 13 13 13 13 13
Construction
Material: Chassis Pre-Treated Galvanized Painted Steel
Color Champagne
Dimensions/Weights
Height (includes Fan Guard) in 28 28 28 28 30
Width in 23½ 23½ 23½ 29 29
Depth in 23½ 23½ 23½ 29 29
Weight lb 97 129 131 145 173
Compressor
Type
Rotary Recip Recip Recip Recip
Crankcase Heater Fitted No No No No No
Condenser
Coil Construction Plate Fin
Microchannel
Plate Fin
Microchannel
Plate Fin
Microchannel
Plate Fin
Microchannel Plate Fin Microchannel
Connections (1)
Suction in
5/8 3/4 3/4 3/4 7/8
Liquid in
3/8 3/8 3/8 3/8 3/8
Refrigerant Charge
Condenser-factory charge lbs-oz 3 - 3 3 - 13 3 - 14 4 - 9 4 - 5
Charge Per Foot of Pipework oz 0.58 0.62 0.62 0.62 0.67
(1) Refrigerant line sizes should always match condensing unit connection sizes.

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Table 18.1 – Technical Data – Condensers for Heat Pump Units
Cassette Unit
CSH 18 CSH 24 CSH 30 CSH 36 CSH 42
Units
Condenser Model
YHJD18 YHJD24 YHJD30 YHJD36 YHJD42
Performance
Nominal System Cooling Capacity BTU/h 18,000 24,000 30,000 36,000 42,000
Nominal System SEER 13 13 13 13 13
Construction
Material: Chassis Pre-Treated Galvanized Painted Steel
Color Champagne
Dimensions/Weights
Height (includes Fan Guard) in 28 32 36 40 40
Width in 34 34 34 34 34
Depth in 34 34 34 34 34
Weight lb 172 184 196 208 208
Compressor
Type
Scroll Recip Recip Recip Scroll
Crankcase Heater Fitted No Yes Yes Yes No
Condenser
Coil Construction Round Tube
Plate Fin
Round Tube
Plate Fin
Round Tube
Plate Fin
Round Tube
Plate Fin Round Tube Plate Fin
Connections (1)
Suction in 3/4 3/4 3/4 3/4 7/8
Liquid in
3/8 3/8 3/8 3/8 3/8
Refrigerant Charge
Condenser-factory charge lbs-oz 6 - 6 8 - 13 9 - 0 9 - 7 9 - 12
Charge Required-Per Foot of
Pipework oz 0.62 0.62 0.62 0.62 0.67
(1) Refrigerant line sizes should always match condensing unit connection sizes.

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Table 19.1 – Electrical Data – Ceiling Cassettes
Units
Model Size
2/8 & 2/12 18, 20, & 24 30, 33, 36, & 42
Chassis Size Small (2 x 2) Medium (3 x 3) Large (3 x 4)
Standard Unit Data
Power Supply 208-230V/1Ph/60Hz 208-230V/1Ph/60Hz 208-230V/1Ph/60Hz
Full Load Amps A 0.65 0.85 1.3
Minimum Circuit Amps (MCA) A 0.74 0.99 1.4
Recommended Fuse A 10 10 10
With Optional Electric Heat (1)
Power Supply 208-230V/1Ph/60Hz 208-230V/1Ph/60Hz 208-230V/1Ph/60Hz
Electric Heat Capacity kW 1.5 3.0 5.0
Full Load Amps A 7.2 13.9 23.1
Minimum Circuit Amps (MCA) A 8.9 19.3 28.8
Recommended Fuse with Heat A 15 20 30
With Optional Booster Xfm
r
(2)
Power Supply 115V/1Ph/60Hz 115V/1Ph/60Hz 115V/1Ph/60Hz
Full Load Amps A 1.3 1.7 2.5
Minimum Circuit Amps (MCA) A 1.5 2.0 2.8
Recommended Fuse A 10 10 10
(1) Standard Unit fitted with optional electric heating elements. Available with 230V model units only.
(2) Standard unit fitted with optional booster transformer for connection to a 115V electrical supply. Electric heat not available in
conjunction with this option.
Table 19.2 – Electrical Data – Condensers for DX Cooling Only Units
Cassette Unit
CSD 18 CSD 24 CSD 30 CSD 36 CSD 42
Units
Condenser Model
YCJD18 YCJD24 YCJD30 YCJD36 YCJD42
Standard Data
Power Supply 208-230V/1Ph/60Hz
MCA A 9.8 12.4 14.7 17.9 21.5
Maximum Overcurrent Device Amps (1) A 15 20 25 30 35
Minimum Overcurrent Device Amps (2) A 15 15 15 20 25
Compressor
Rated Load Amps (RLA) A 7.4 9.3 10.6 13.1 16.0
Locked Rotor Amps (LRA) A 40 43 54 74 84
Condenser Fan
Rated Load Amps (RLA) A 0.5 0.8 1.4 1.5 1.5
Rated Horsepower hp 1/12 1/8 1/4 1/4 1/4
(1) Dual element fuses or HACR circuit breaker. Maximum allowable overcurrent protection.
(2) Dual element fuses or HACR circuit breaker. Minimum recommended overcurrent protection.

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Table 20.1 – Electrical Data – Condensers for Heat Pump Units
Cassette Unit
CSH 18 CSH 24 CSH 30 CSH 36 CSH 42
Units
Condenser Model
YHJD18 YHJD24 YHJD30 YHJD36 YHJD42
Standard Data
Power Supply 208-230V/1Ph/60Hz
MCA A 11.9 11.2 14.1 19.7 28.6
Maximum Overcurrent Device Amps (1) A 20 15 20 30 50
Minimum Overcurrent Device Amps (2) A 15 15 15 20 30
Compressor
Rated Load Amps (RLA) A 9.0 8.3 10.6 14.7 21.8
Locked Rotor Amps (LRA) A 48 43 54 74 105
Condenser Fan
Rated Load Amps (RLA) A 0.7 0.8 0.8 1.5 1.5
Rated Horsepower hp 1/10 1/8 1/8 1/4 1/4
(1) Dual element fuses or HACR circuit breaker. Maximum allowable overcurrent protection.
(2) Dual element fuses or HACR circuit breaker. Minimum recommended overcurrent protection.
Table 20.2 – Sound Data – Ceiling Cassette Units
MERCER TABLE
Models
Fan
Speed
SPL,
dBA (1)
Sound Pressure Frequency Spectrum, dB (1)
125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz
High 29 37 37 33 29 21 14 10
CCW2/8 Med 26 34 34 30 24 15 12 10
Low 22 31 29 25 17 8 10 8
High 35 42 41 38 35 28 21 12
CCW2/12 Med 32 38 39 36 32 24 16 10
Low 29 37 37 33 29 21 14 10
CSD/CSH 18 High 43 41 45 38 40 33 25 17
CCW 18 Med 39 39 41 35 36 27 19 16
Low 38 38 40 34 34 25 18 16
CSD/CSH 24 High 46 43 47 40 43 37 29 19
CCW 20 Med 43 41 45 38 40 33 25 17
Low 39 39 41 35 36 27 19 16
CSD/CSH 30 High 48 51 49 46 42 34 22 19
CCW 33 Med 44 50 46 43 38 28 18 17
Low 42 49 44 41 36 25 17 16
CSD/CSH 36 High 52 54 54 50 46 41 27 24
CSD/CSH 42 Med 48 51 49 46 42 34 22 19
CCW 36 Low 45 50 47 44 39 31 19 18
(1) SPL is the overall Sound Pressure Level measured at a distance of 5 ft below the fascia in free field, dry coil conditions, referenced to 2 x
105Pa