McQuay CK Series chilled water fan coil units are designed to provide efficient and comfortable cooling for a variety of applications. With a range of models available, from 2 tons to 5 tons, these units are suitable for small to medium-sized rooms. The CK Series units feature a compact design, allowing for easy installation in tight spaces, and are equipped with a washable air filter to remove dust and allergens from the air.
McQuay CK Series chilled water fan coil units are designed to provide efficient and comfortable cooling for a variety of applications. With a range of models available, from 2 tons to 5 tons, these units are suitable for small to medium-sized rooms. The CK Series units feature a compact design, allowing for easy installation in tight spaces, and are equipped with a washable air filter to remove dust and allergens from the air.
INSTALLATION
MANUAL
INSTALLATION
MANUAL
CHILLED WATER FAN COIL UNIT
CC
CE
CK
IM-FCU-0999L (local cover) 7/14/00, 1:19 PM1
1-1
IM-FCU-0999
This manual provides the procedures of installation to ensure a safe and good standard of operation for the air
conditioner unit.
Special adjustment may be necessary to suit local requirements.
Before using your air conditioner, please read this instruction manual carefully and keep it for future reference.
INSTALLATION MANUAL
CHILLED WATER FAN COIL UNIT
MODEL
Model
ACK20AW, MCK020AW, YCK20AW, CXCA20AW
ACK25AW, MCK025AW, YCK25AW,
CXCA25AW
ACK30AW, MCK030AW, YCK30AW,
CXCA30AW
ACK40AW, MCK040AW, YCK40AW, CXCA40AW
ACK50AW, MCK050AW, YCK50AW, CXCA50AW
Model
RCM20DW, MCM020DW, YCE20DW
RCM25DW, MCM025DW, YCE25DW
RCM30DW, MCM030DW, YCE30DW
RCM40DW, MCM040DW, YCE40DW
Model
RCC10BW, MCC010BW, YCC10W
RCC15BW, MCC015BW, YCC15W
RCC20BW, MCC020BW, YCC20W
RCC25BW, MCC025BW, YCC25W
RCC30BW, MCC030BW, YCC30W
RCC40BW, MCC040BW, YCC40W
CK
Reference Model
CK20AW
CK25AW
CK30AW
CK40AW
CK50AW
CE
Reference Model
CE20DW
CE25DW
CE30DW
CE40DW
CC
Reference Model
CC10BW
CC15BW
CC20BW
CC25BW
CC30BW
CC40BW
Part No.:08019008151
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM1
1-2
IM-FCU-0999
CONTENTS
- Safety Precautions page 02
- Installation Diagram page 03
- Outline And Dimensions (CC series) page 04
- Outline And Dimensions (CK series) page 04
- Outline And Dimensions (CE series) page 05
- Installation Of Indoor Unit page 05
- Electrical Wiring Connection page 11
- Overall Checking page 12
- Service And Maintenance page 12
- Trouble Shooting page 12
SAFETY PRECAUTIONS
Before installing the air conditioner unit, please read the following safety precautions carefully.
! Caution
Please take note on the following important points when installing.
• Do not install the unit where leakage of flammable gas may occur.
If water gas leaks and accumulates at the surrounding of the unit, it may cause fire ignition.
• Ensure that the drainage piping is connected properly.
If the drainage piping is not connected properly, it may cause water leakage which will dampen the
furniture.
• Ensure that the unit panel is covered back after service or installation.
Unsecured panel will cause the unit to operate noisily.
! Warning
• Installation and maintenance should be performed by qualified persons who are familiar with local code and
regulation, and experienced with this type of appliance.
• All field wiring must be installed in accordance with the national wiring regulation.
• Ensure that the rated voltage of the unit corresponds to that of the name plate before commencing wiring work
according to the wiring diagram.
• The unit must be GROUNDED to prevent possible hazard due to insulation failure.
• All electrical wiring must not touch the refrigerant piping or any moving parts of the fan motors.
• Confirm that the unit has been switched OFF before installing or servicing the unit.
IMPORTANT
DO NOT INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM.
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM2
1-3
IM-FCU-0999
INSTALLATION DIAGRAM
CE Model
CK Model
Drain Hose
Front Panel
Air Discharge
Louver
Air Intake
Grille
IR Receiver
LED Light
Air
Discharge
Louver
Signal
Receiver
Indicator
Lights
Air Filters
(Inside Air Intake Grille)
Air Filter
(Behind The Grille)
Water Piping
Chiller
Water Piping
CC Model
Water Piping
Air Intake Grille
Air Discharge Grille
Air Discharge Louver
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM3
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IM-FCU-0999
OUTLINE AND DIMENSIONS
INDOOR UNIT (CC SERIES)
G
A
R
E
N
OM
S
D
QP
L
H
I
U
F
D
C
CK
B
J
T
CC MODEL A B C D E F G H I J K L M N O P Q R S T U
10BW 700 240 25 780 30 50 754 410 350 182 193 140 565 25 90 45 30 673 653 255 190
15BW 800 240 25 880 30 50 854 410 350 182 193 140 665 25 90 45 30 773 753 255 190
20BW 1000 240 25 1080 30 50 1054 410 350 182 193 140 865 25 90 45 30 973 953 255 190
20BW 1200 240 25 1280 30 50 1254 410 350 182 193 140 1065 25 90 45 30 1173 1153 255 190
30BW 1500 240 25 1580 30 50 1554 410 350 182 193 140 1345 25 90 45 30 1473 1453 255 190
40BW 1800 240 25 1880 30 50 1854 410 350 182 193 140 1665 25 90 45 30 1773 1753 255 190
INDOOR UNIT (CK SERIES)
• (With Wireless Remote Control & With Wired Remote Control)
All dimensions are in mm.
All dimensions are in mm.
F
H
I
J
G
K
E
C
D
B
A
CK MODEL A B C D E F G H I J K
20AW
25AW
30AW 820 820 363 335 28 930 930 642 622 555 555
40AW
50AW
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM4
1-5
IM-FCU-0999
OUTLINE AND DIMENSIONS
INDOOR UNIT (CE SERIES)
MODEL 20DW 25DW 30DW 40DW 50DW
A 1174 1174 1174 1674 1674
B 75 75 75 75 75
C 1082 1082 1082 1582 1582
D 68 68 68 68 68
E 58 58 93 93 93
F 156 156 156 156 156
G 1214 1214 1214 1714 1714
H 57 57 57 57 57
I 670 670 670 670 670
J 216 216 216 216 216
K 319 319 319 319 319
L 879 879 879 1379 1379
M 517 517 517 517 517
All dimensions are in mm.
! Caution
Sharp edges and coil surfaces are potential locations which may cause injury
hazards. Avoid from being in contact with these places.
A
B
C
G
L
F
E
M
I
H
H
KJ
D
• Electrical supply and installation is to conform to local authority's (e.g. National Electrical Board) codes and regulations.
• Voltage supply fluctuation must not exceed ±10% of rated voltage. Electricity supply lines must be independent of welding
transformers which can cause high supply fluctuation.
• Ensure that the location is convenient for wiring, piping and drainage.
• The indoor unit must be installed in such a way that is free from any obstacles in the path of cool air discharge and warm air
return, and must allow spreading of air throughout the room (near the center of the room).
CC Model
• Use the hanger supplied with the unit.
• Make sure that the wall is sufficiently strong to withstand
the weight.
Provide clearance for servicing ease and optimal air flow as
shown in the diagram.
INSTALLATION OF INDOOR UNIT
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM5
1-6
IM-FCU-0999
10 mm
10 mm
A
140 mm
CK Model
• The installation place must be strong enough to support a load 4 times weight of the indoor unit to avoid noise amplification
and vibration.
• The installation place (handing ceiling surface) must be assuring levelness and the height in the ceiling is 350mm or more.
• The indoor unit must be placed away from heat and steam sources (avoid installing it near an entrance).
• Must be provide clearance for the indoor unit from the wall and obstacles as shown in the figure.
Max. 0.3 m
Min. 0.5 m
Min. 0.5 m
Min. 0.5 m
Min. 1.0 m
Max. 3.0 m
Obstacle
Beam
Floor
Unit Installation
• Measure and mark the position for the hanging rod. Drill
the hole for the angle nut on the ceiling and fix the hanging
rod.
• The installation template is extended according to
temperature and humidity. Check on dimensions in use.
• The dimensions of the installation template are the same
as those of the ceiling opening dimensions.
• Before ceiling laminating work is not completed, be sure
to fit the installation template to the indoor unit.
NOTE
Be sure to discuss the ceiling drilling work with the installers
concerned.
Unit Hanging
• Confirm that the pitch of the hanging rod is 790mm x
620.5mm sharp.
• Hold the unit and hang it on the hanging rod with the nut
and washer.
• Adjust the unit height to 35.0mm between the indoor unit
bottom surface and the ceiling surface.
• Confirm with a level gauge that the unit is installed
horizontally and tighten the nut and bolt to prevent unit
from falling and vibrating.
• Open the ceiling board along the outer edge of the paper
installation template.
620.5 mm (hanging rod)
890.0 mm (ceiling board opening)
Unit size 820.0 mm
Unit size 820.0 mm
790.0 mm (hanging rod)
890.0 mm (ceiling board opening)
Unit
Indoor Unit
Ceiling
Board
35.0 mm
Piping Direction
Center distance of axle (see drawing below)
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM6
1-7
IM-FCU-0999
Indoor Unit
Pipe Clamp
GOOD
BAD
Main Drain Pipe
Feed Water
Flexible Drain Hose
NOTE
THIS INDOOR UNIT USES A DRAIN PUMP FOR
CONDENSED WATER DRAINAGE. INSTALL THE UNIT
HORIZONTALLY TO PREVENT WATER LEAKAGE OR
CONDENSATION AROUND THE AIR OUTLET.
Panel Installation
• The front panel can only be fitted in one direction, follow the piping direction. (Observe the piping arrow sticker on the
front panel).
• Be sure to remove the installation template before installing the front panel.
Drain Piping Work
• Drain pipe must be in downward gradient for smooth
drainage.
• Avoid installing the drain pipe in up and down slope to
prevent reversed water flow.
• During the drain pipe connection, be careful not to exert
extra force on the drain connector at indoor unit.
• The outside diameter of the drain connection at the flexible
drain hose is 20mm.
• Be sure to execute heat insulation (polyethylene foam with
thickness more than 8.0mm) on the drain piping to avoid
the condensed water dripping inside the room.
Drain Test
• Connect the main drain pipe to the flexible drain hose.
• Feed water from flexible drain hose to check the piping for
leakage.
• When the test is completed, connect the flexible drain hose
to the drain connector on the indoor unit.
OPEN
SCREWS
• Open the air intake grille by pulling back the catchers and
remove it together with the filter from panel.
• Install the front frame panel onto the indoor unit with 4
screws and tighten it completely to prevent cool air leakage.
• Connect the LED wire and air swing wire to the indoor
unit.
From
Front
Panel
LED Wire
Air Swing
Wire
Control Box
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM7
1-8
IM-FCU-0999
NOTE:
INSTALL THE FRONT FRAME PANEL FIRMLY TO PREVENT COOL AIR LEAKAGE WHICH WILL CAUSE
CONDENSATION AND WATER DRIPPING.
Air Intake Grille Installation
• Before installed the air intake grille, make sure the air filter
is clip properly to the air intake grille.
• Install the air intake grille together with the air filter to the
front panel.
• The grille can be fit in any direction, when selecting
direction, the ceiling design and grille operability should
be considered.
• If the unit is come with ionizer filter (optional item), make
sure to fix the ionizer filter to the air filter before installed
the air intake grille.
• Fix the ionizer filter to the air filter with the black side on
top and white side at bottom.
• Carefully clip on the ionizer filter frame.
Air leak
Cool Air
Indoor Unit
Cool Air
Ceiling Board
Panel
Air leak
Ceiling Board
Panel
GOOD INSTALLATION
BAD INSTALLATION
FRAME
IONIZER
FILTER
Accessory Part
• The indoor unit is provided with air discharge and air intake “knock-out” hole for duct connection. However the connec-
tion of the short duct for air discharge is possible on only one side.
• The use of short duct for air discharge will improve airflow distribution if there is an obstruction (such as a lighting fixture)
or in a long, narrow room or an L-shaped room. It also use for air conditioning of two rooms simultaneously.
Possible Direction For Air Discharge And Air Intake
Possible Opening Dimension For Duct Connection
Air Intake
Air DischargeAir Discharge
Air Discharge
Air Discharge
10
50 50 50 50 50 10
207020109
119 90
Ø100
PCD Ø140
115 20 115
Air Discharge Knock Out Hole Air Intake Knock Out Hole
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM8
1-9
IM-FCU-0999
NOTE:
• Avoid using the short duct on which the air discharge grille can be completely closed, to prevent evaporator freezing.
• In order to prevent condensation forming, be sure that there is sufficient thermal insulation and no leakage of cool air when
installing the short duct.
• Keep the introduction of fresh air intake within 20% of total air flow. Also provide a chamber and use a booster fan.
Sealing Material
• It is possible to seal one of the four air discharge outlet. (sealing two or more air discharge outlet could cause a malfunction)
• Remove the front panel and insert the sealing material into the air discharge outlet on the indoor unit to seal the air outlet.
• The sealing material is the same length as the longer air discharge outlet. If it is desired to seal the shorter air discharge
outlet, cut the sealing material to shorten it.
• Push the sealing material in about 10mm beyond the bottom surface of the indoor unit so that it does not touch the air louver.
Be sure not to push the sealing material in any farther than about 10mm.
FIGURE A
CE Model
Preliminary Site Survey
* Electrical supply and installation shall conform to the local
authority (e.g. National Electrical Board).
* Voltage supply fluctuation must not exceed ±10% of the
rated voltage. Electricity supply lines must be
independent of welding transformers which can cause high
supply fluctuation.
* Ensure that the installation location is convenient for
wiring and piping.
Standard Mounting
Ensure that the overhead supports are strong enough to hold
the weight of the unit. Position the hanger rods (wall
mounting bracket for floor standing), and check for its
alignment with the unit as shown in Figure A. Also, check
that the hangers are secured and the base of the fan coil unit is
leveled in both horizontal directions, taking into account
the
gradient for drainage flow as recommended in Figure B.
MODEL
20 25 30 40 50
A 1214 1214 1214 1714 1714
B 666 666 666 666 666
C 273 273 273 273 273
D 130 130 130 130 130
E 1160 1160 1160 1560 1560
F 27 27 27 27 27
G 77 77 77 77 77
H 745 745 745 1235 1235
I 25 25 25 25 25
J 209 209 209 331 331
K 486 486 486 486 486
L 108 108 108 108 108
M 360 360 360 600 600
FIGURE B
Please ensure that the following steps are taken:
* Check the gradient for drainage flow as recommended in
Figure B.
* Provide clearance for easy servicing and optimal air flow
as shown in Figure C.
* The indoor unit must be installed such that there is no short
circuit of the cool discharge air with the warm
return air.
* Do not install the indoor unit where there is direct
sunlight shining on the unit. The location should be
suitable for piping and drainage installation. The unit must
be a large distance away from the door.
10.0mm
10.0mm lower
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM9
1-10
IM-FCU-0999
FIGURE D
SEMI-ENCLOSE MOUNTING
* In case the unit is to be half-recessed into a false ceiling, please check that the unit is well-aligned.
* Provide the installation space as shown in figure D.
CEILING TYPE
FIGURE C
FLOOR STANDING TYPE
CEILING BOARD
TOP PANEL OF UNIT
UTENSILS, FURNITURES OR BUILT-IN
ARCHITECTURAL FEATURES MUST
NOT PROTRUDE MORE THAN 250.0MM
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM10
1-11
IM-FCU-0999
ELECTRICAL WIRING CONNECTION
NOTE:
This is a proposed wiring connection. It may change subject to the chiller unit and must comply with the local and national
code and regulations.
CC10BW~CC40BW
FCU
FCUFCU
Gate Valve
Gate Valve
Three Way Valve
Good Controlling
Bad Controlling Worst Controlling
Gate Valve
Gate Valve
Two Way Valve
Gate Valve
Gate Valve
Chiller
CK20AW~CK50AW
CE20DW~CE40DW
WATER PIPING CONNECTION
The indoor unit is equipped with water outlet and inlet bare connection. There is an air-vent for air purging that is fitted at the
outlet water header.
3 ways solenoid valve is required for cycling off or bypass the chilled water.
Black steel pipe, polyethrene pipe, PVC pipe and copper tube are recommended in field installation.
All types of piping and connection must be insulated by polyurethane (ARMAFLEX type or equivalent) to avoid condensation.
Do not use contaminated or damaged pipe and fitting for installation.
Some main fitting components are needed in the system to enhance the capacity and ease of service, such as gate valve,
balancing valve, 2 ways or 3 ways solenoid valve, filter, strainer etc.
COMP L N
FCU 1
3wv
x1, x2, x3
Solenoid Valve for 3 way valve
Relay (220-240V, 10A)
COMP L N
FCU 2
COMP L N
FCU 3
3wv
x1
Chiller
3wv
x2
3wv
x3
R
S
T
N
FL FM FH SH TH L N
FL FM FH SH TH L N
FL FM FH SH TH L N
FCU 1 FCU 2 FCU 3
TH
3wv
Chiller
x1
TH
3wv
TH
3wv
R
S
T
N
x2
x3
3wv
x1, x2, x3
TH
Solenoid Valve for 3 way valve
Relay (220-240V, 10A)
Thermostat
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IM-FCU-0999
When any malfunction of the air conditioner unit is noted, immediately switch off the power supply to the
unit. Check the following fault conditions and causes for some simple trouble shooting tips.
TROUBLE SHOOTING
CAUSES / ACTION
- Protection against frequent starting. Wait for 3 to 4
minutes for the compressor to start operating.
- Power failure, or the fuse need to be replaced.
- The power plug is disconnected.
- It is possible that your delay timer has been set incorrectly.
- If the fault persist after all these verifications, please
contact the air conditioner unit installer.
- The air filter is dirty.
- The doors or windows are open.
- The air suction and discharge are clogged.
- The regulated temperature is not high enough.
- Odors may be caused by cigarettes, smoke particles,
perfume etc. which might have adhered onto the coil.
- This is caused by air humidity after an extended long
period of operation.
- The set temperature is too low, increase the temperature
setting and operate the unit at high fan speed.
- Switch off unit and call dealer.
FAULT
1. The compressor does not start operate after 3 minutes
from starting the air conditioner unit.
2. The air conditioner unit does not operate.
3. The air flow is too low.
4. Discharge air flow has bad odor.
5. Condensation on the front air grille of the indoor unit.
6. Water flowing out from the air conditioner unit.
If the fault persists, please call your local dealer / serviceman.
SERVICE AND MAINTENANCE
! Warning
Disconnect from the main supply before servicing the air conditioner unit.
MAINTENANCE PROCEDURES
1. Remove any dust adhere on the filter by using a vacuum cleaner
or wash in lukewarm water (below 40°C) with neutral cleaning
detergent.
2. Rinse the filter well and dry before placing it back onto the unit.
3. Do not use gasoline, volatile substances or chemical to clean
the filter.
1. Clean any dirt or dust on the grille or panel by wiping it off
with soft cloth soaked in lukewarm water (below 40°C) with
neutral detergent solution.
2. Do not use gasoline, volatile substances or chemical to clean
the indoor unit.
PERIOD
At least once
every 2 weeks.
More frequently if
necessary.
At least once
every 2 weeks.
More frequently if
necessary.
SERVICE PARTS
Indoor air filter
Indoor unit
Ensure the following, in particular:-
1) The unit is mounted solidly and rigid in position.
2) Piping and connections are leak proof after charging.
3) Proper wiring has been done.
Drainage check-pour some water into left side of drain pan (drainage is at the right side of the unit).
NOTE:
• The installation guide above covers only the fan coil unit. For installation of outdoor (chiller mini chiller etc) please refer to
the installation guide for such unit.
• The installation of fan coil unit may vary according to the type of outdoor unit.
• Installation must be done by qualified personnel who are familiar with this type of product.
OVERALL CHECKING
IM-FCU-0999L (Eng) 7/14/00, 1:18 PM12
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2
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3
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4
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5
-
6
-
7
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8
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9
-
10
-
11
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12
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13
McQuay CK Series Installation guide
- Category
- Split-system air conditioners
- Type
- Installation guide
McQuay CK Series chilled water fan coil units are designed to provide efficient and comfortable cooling for a variety of applications. With a range of models available, from 2 tons to 5 tons, these units are suitable for small to medium-sized rooms. The CK Series units feature a compact design, allowing for easy installation in tight spaces, and are equipped with a washable air filter to remove dust and allergens from the air.
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