York LD11556, LD11555, LD11554 User Manual
FAN COIL
AIR CONDITIONERS
INSTALLATION, OPERATION, & MAINTENANCE
YCW Series
2-pipe, 4-pipe
or
2-pipe, cooling with electric heat
NEW RELEASE
MODELS: YCW SERIES
Basic YCW Series Unit
Form 115.20-NOM6 (1106)
LD11554
LD11555
YCWE with Bottom Return
Option (shown)
LD11556
Basic YCW Series with Optional
Notes:
1. For proper operation, control valve must be normally closed.
2. Aquastats provided where required.
3. Electric Heat is available as an option.
Wall Panel (shown)
***** WARNING TO INSTALLER, SERVICE PERSONNEL AND OWNER *****
Altering the product or replacing parts with non-authorized factory parts voids all warranty or
implied warranty and may result in adverse operational performance and/or a possible hazardous
safety condition to service personnel and occupants. Company employees and/or contractors are
not authorized to waive this warning.
JOHNSON CONTROLS
2
FORM 115.20-NOM6 (1106)
TABLE OF CONTENTS
http://intranet.york.com/web0003/
F
D
C
B
2
1.75
A
DRAIN
KNOCKOUTS
(BOTH SIDES)
LOW VOLTAGE
HIGH VOLTAGE
OPTIONAL
OVERFLOW
SWITCH
OPENING WITH
COVER REMOVED:
6-3/8 X 18.5
DISCONNECT
E
SUPPLY AND
RETURN CHILLED
WATER LINES
(5/8"OD COPPER
STUBOUTS)
HOT WATER RETURN
HOT WATER
SUPPLY
A
YCW
YCW-HW
YCWE
10 YCW-31
CFM (100's)
3,4,6,8,10,12
Unit Style
YCW - 2-pipe
YCWE - 2-pipe
w/EH
YCW-HW - 4-pipe
Coil Type
3 - 3 Row
4 - 4 Row
31 - 3 Row Cool,
1 Row Heat
41 - 4 Row Cool,
1 Row Heat
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YCW UNIT STYLE
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WIRING
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RECEIVING
FORM 115.20-NOM6 (1106)
INSTALLATION
Material in this shipment has been inspected at the
factory and released to the transportation agency in
good condition. When received, a visual inspection of
all cartons should be made immediately. Any evidence
of rough handling or apparent damage should be noted
on the delivery receipt and the material inspected in
the presence of the carrier’s representative.
If damage is found, a claim should be
filed against the carrier immediately.
STORAGE
If the equipment is not to be immediately installed,
store it in a dry location with the motor protected
against moisture, dust, corrosion and physical damage.
If units are to be stored for six months or longer, see
long term storage requirements (Form 50.20-NM3).
DESCRIPTION
The YCW models are available as 2-pipe cooling
(YCW), 2-pipe cooling with electric heat (YCWE)
and a 4-pipe heating/cooling (YCW-HW). All units are
provided with a 3-speed fan control in the control box
in the fan section (left side), with 24v access on the top
panel, left. Manual and auto changeover thermostats
and the T200 auto speed control thermostats can be
used with this unit. Twenty-four volt (24 v) power is
provided in the unit for thermostat operation.
The 2-pipe cooling unit is provided with a single coil
with connections on the top panel, right side.
form (platform not provided), hung on a closet wall
(use wall hanging kit option) or recessed in a wall
between wall studs (use front panel kit option).
FEATURES
Non-corrosive drain pan, installed in sloped position,
¾” female primary and secondary connections accessible from either side or bottom.
Filters provided, are 1” throwaway accessible from
the front.
Coils and fan motor/blower assemblies accessible
from the front, when installed with the optional front
panel assembly.
Front air return standard, optional bottom return available but requires bottom return option.
Options available are thermostats, wall front panels,
condensate pan overflow switch, closet hanger bracket
kit, bottom return air kit and chilled water coil valve
packages. Consult applications group @ 717-7717073 for details on ordering and availability of these
options.
Cabinet is fully insulated with 1” coated fiberglass
panels.
All units have 0” clearance to combustible surfaces,
so the units can be installed against wall studs and
drywall.
CLEARANCES
The 2-pipe cooling with electric heat is provided
with a single chilled water coil and electric heat elements; coil connections are on the top panel, right
side; electrical connections are on the top panel, left
side and the units are provided with a disconnect on
the front panel.
The 4-pipe heating/cooling unit is provided with 2
coils with single end sheets – cooling connections are
on the top panel, right side and the hot water connections are on the top panel, middle front.
This unit is designed to be installed vertically in the
upflow position and can be installed on a closet plat-
JOHNSON CONTROLS
Clearance required in front of the unit to provide
access to coils, electrical controls and motor/blower
assembly. This clearance should be equal to the depth
of the cabinet.
MOUNTING - YCW UNIT STYLE
Recessed In Wall
All units must be installed level to insure proper drainage and operation.
1. Frame the unit as required so the front panel
of the wall unit will be flush with the drywall
surface when installed (see Fig. 3).
3
INSTALLATION
VERTICAL 2X 4
WALL STUDS
CLOSET MOUNT:
BRACKET
PLACEMENT
FOR HANGING
MOUNT UNIT
FLUSH WITH
DRY WALL (1/2"
MIN. IN FRONT
OF WALL STUD)
LEAVE SUFFICIENT SPACE
FOR DRAIN PIPING 10" TO 12"
MIN. RECOMMENDED
ATTACH UNIT TO FRAMING
USING SIX SCREWS/NAILS
IN CABINET LOCATIONS
SHOWN
CROSS MEMBER - TOP &
BOTTOM (PLACE UPPER CROSS
MEMBER 3" ABOVE UC UNIT)
SUPPORT FRAMING
RECESSED WALL UNIT TOP VIEW
THERMOSTAT
WIRING
POWER SUPPLY
WIRING
WALL PANEL FRAME
HOT
WATER
OUTLET
HOT
WATER
INLET
DRY WALL
2 X 4 WALL
STUD
CW UNITS:
CHILLED WATER
CONNECTION
Note: Front edge of unit to
be flush with dry wall.
CROSS MEMBER
(ON EDGE)
2 X 4 WALL STUD
WALL PANEL FRAME
SCREW
DETAIL OF WALL PANEL FRAME INSTALLATION
DRY WALL
FORM 115.20-NOM6 (1106)
2. Frame around the perimeter of the unit as
required for securing the drywall. See Table 1
below for drywall openings.
TABLE 1 - DRYWALL OPENINGS
MODEL NUMBER
3YWC 28 x 42
4YWC 28 x 50
6YWC 28 x 58
8YWC 28 x 66
10YWC 28 x 74
12YWC 28 x 82
DRYWALL CUTOUT DIM
HT x WD
3. Mount the unit in its permanent location, making
sure it is level to insure proper drainage and
operation (two 1/2” holes have been provided
on each end of the unit for securing the unit to
the wall studs).
4. After the drywall has been installed, recheck to
make sure the unit’s front panel is flush with the
exterior drywall surface. Shimming of the unit
may be required to get a seal between the unit
and panel.
5. Install the wall panel to the front of the unit using
the 1/4-20 x 1-1/2” long, painted, Phillips head
screws (four on unit sizes 3, 4, 6 and 8; six on
unit sizes 10 and 12) (1/4” cage nuts are located
in the slotted front panel of the unit).
6. Remove the lower return air grille to get access
to the filter.
7. See Fig. 2 for unit details and dimensions.
Hung on a Closet Wall
Unit can be mounted in a closet using the bracket
support option 90PK3.
These brackets mount to the top, back of the cabinet.
See Fig 3 for location.
The unit should be isolated from the wall to be sure
sound is not transferred from the unit to the wall.
Platform Mounted in a Closet
Unit can be set on a platform (provided by others) in
a closet.
Be sure to allow for sufficient space below the platform
for drain piping.
FIG. 3 – CW-HW RECESSED WALL and CLOSET
MOUNTING
4
LD11695A
JOHNSON CONTROLS
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