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FAN COIL
AIR CONDITIONERS
NEW RELEASE
Form 115.20-NOM6 (1106)
INSTALLATION, OPERATION, & MAINTENANCE
MODELS: YCW SERIES
YCW Series
2-pipe, 4-pipe
or
2-pipe, cooling with electric heat
LD11554
Basic YCW Series Unit
LD11555
YCWE with Bottom Return
Option (shown)
LD11556
Basic YCW Series with Optional
Notes: Wall Panel (shown)
1. For proper operation, control valve must be normally closed.
2. Aquastats provided where required.
3. Electric Heat is available as an option.
***** WARNING TO INSTALLER
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FORM 115.20-NOM6 (1106) TABLE OF CONTENTS RECEIVING ..........................................................................................................................................................3 STORAGE ............................................................................................................................................................3 DESCRIPTION ..................................................................................................................
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FORM 115.20-NOM6 (1106) INSTALLATION RECEIVING Material in this shipment has been inspected at the form (platform not provided), hung on a closet wall factory and released to the transportation agency in (use wall hanging kit option) or recessed in a wall good condition. When received, a visual inspection of between wall studs (use front panel kit option). all cartons should be made immediately. Any evidence of rough handling or apparent damage should be noted FEATURES on the delivery recei
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FORM 115.20-NOM6 (1106) INSTALLATION 2. Frame around the perimeter of the unit as 5. Install the wall panel to the front of the unit using required for securing the drywall. See Table 1 the 1/4-20 x 1-1/2” long, painted, Phillips head below for drywall openings. screws (four on unit sizes 3, 4, 6 and 8; six on unit sizes 10 and 12) (1/4” cage nuts are located TABLE 1 - DRYWALL OPENINGS in the slotted front panel of the unit). DRYWALL CUTOUT DIM MODEL NUMBER 6. Remove the lower return air gr
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FORM 115.20-NOM6 (1106) INSTALLATION DUCTWORK The YCW-HW units (4-pipe heating/cooling) are Ductwork recommendations are as follows: provided as standard 120 volt power wired to a dis- • Insulate to prevent condensation during connect/terminal block and a ground lug. Fan motor cooling. hi, med and low speed leads are wired to the control • Size to the unit openings are generally board. There may be an unused motor lead from the acceptable but are determined by the engineering motor – its ne
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FORM 115.20-NOM6 (1106) Table 2 - ELECTRICAL DATA MAX.OVERCURRENT KW TOTAL AMPS MIN. CIR. AMPACITY PROTECTION UNIT MODEL 240V 208V 240V 208V 240V 208V 240V 208V 0 0 0.0 1.1 N/A N/A N/A N/A N/A 1 1 0.8 5.3 4.7 7 6 15 15 4CWE 2 2 1.5 9.4 8.3 12 11 15 15 3 3 2.3 13.6 11.9 17 15 20 15 4 4 3.0 17.8 15.5 23 20 25 20 0 0 0.0 1.1 N/A N/A N/A N/A N/A 2 2 1.5 9.4 8.3 12 11 15 15 3 3 2.3 13.6 11.9 17 15 20 15 6CWE 4 4 3.0 17.8 15.5 23 20 25 20 5 5 3.8 21.9 19.1 28 24 30 25 6 6 4.5 26.1 22.7 33 29 35 30 0
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FORM 115.20-NOM6 (1106) INSTALLATION PIPING All piping connections are 5/8" OD copper tubing • When soldering to bronze or brass, heat the piping (see Fig.4). while in the socket/cup and begin introducing the solder when the flux boils rapidly. Avoid direct The supply and return piping must be adequately flame into the solder joint. sized to meet the design water flow requirements as • Heat can only be applied to the cup of the valve specified for the specific installation. All chilled water
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FORM 115.20-NOM6 (1106) INSTALLATION Drain Piping Condensate drain lines must be installed with adequate slope away from the unit to assure positive drainage. Since the drain pan is located on the suction side of the blower, a negative pressure exists at the drain pan and a minimum trap of 1-1/2" must be provided in the drain line to assure proper drainage. Drain connections, primary and secondary, are 3/4" MPT (see Fig. 5 for details). On units with plastic drain pans the LD12278 CONDE
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FORM 115.20-NOM6 (1106) SEQUENCE OF OPERATION YCW With a Chilled Water Coil The unit will respond to a cooling command from When using the T200 thermostat, the stat will auto- the thermostat by powering a water control valve matically regulate the fan speed based on the differ- open. The fan will operate at the speed selected at the ence between the space temp and setpoint - @ 4˚F off thermostat. When the space reaches the temperature setpoint, the fan will run @ HI; @ 3˚F off setpoint, the
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FORM 115.20-NOM6 (1106) MAINTENANCE MOTOR The blower motor should be cleaned annually and if it To ensure proper maintenance of the filters, it is best has oiling ports, it should be oiled with a good grade to follow an organized maintenance procedure. The of SAE 20 oil. Normally a few drops of oil in each following one is recommended: bearing is sufficient. Divide the total number of units on the job into six equal groups. Each week inspect, clean or replace COIL the filters in each group
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FORM 115.20-NOM6 (1106) This Page Intentionally Left Blank 11 JOHNSON CONTROLS
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FAN COILS START-UP CHECKLIST INSTALL CHECKLIST ❑ Equipment received as ordered. ❑ Unit checked for damage interior and exterior. ❑ Make sure all ductwork is complete and available for full air fl ow. ❑ Unit installed level to ensure proper drain age and operation. ❑ Unit installed with proper clearances. ❑ Ensure con den sate water will drain to ward the drain con nec tion. An overfl ow drain may be required as a back up to a clogged primary drain. ❑ Check that coil(s), valves and pip ing
