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FAN COIL
AIR CONDITIONERS
NEW RELEASE
Form 115.20-NOM4 (105)
INSTALLATION, OPERATION, & MAINTENANCE
MODELS: YMB, YMB-HW, YMBE
YMB Series
(2-pipe, cooling and heating)
(Replaces the MH Series)
YMB-HW Series
(4-pipe, cooling and heating)
(Replaces the MH-HW Series)
YMBE Series
(2-pipe, cooling with electric heat)
(Replaces the MHE Series)
00781VIP
LD07966
(See page 3 for details)
Notes:
1. For proper operation, control valve must be normally closed.
2. Aquastats provided where required.
3. Electri
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FORM 115.20-NOM4 (105) FORM 115.20-NOM4 (105) TABLE OF CONTENTS INSTALLATION INSTALLATION.................................................................................................................................................3-6 RECEIVING ...................................................................................................................................................3 STORAGE ...............................................................................................
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FORM 115.20-NOM4 (105) FORM 115.20-NOM4 (105) INSTALLATION RECEIVING HORIZONTAL APPLICATION Material in this shipment has been inspected at the These fan coil units are factory assembled for horizon- factory and released to the transportation agency in tal left side down application without any modification good condition. When received, a visual inspection of required. To convert to horizontal right side down, all cartons should be made immediately. Any evidence remove horizontal drain pan a
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FORM 115.20-NOM4 (105) FORM 115.20-NOM4 (105) INSTALLATION INSTALLATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � FIG. 2 – YMBE WIRING CONNECTIONS, FIG. 3 – YMBE WIRING CONNECTIONS, 25 KW 15 & 20 KW � � � � � � � � � � � � � � � � � � � � � � � � �
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FORM 115.20-NOM4 (105) FORM 115.20-NOM4 (105) INSTALLATION INSTALLATION YMB, YMB-HW: YMBE: 1) Separate cooling and heating coils (4 row cooling 1) Factory installed electric heat coil) 2) 208/240 volt Motor 2) 120V multi-speed motor. 3) 240/24 transformer 3) Vertical / Horizontal drain pan (right-to left and left-to 4) Circuit breaker disconnect (above 10 kW) right airflow) 5) Manual air vent 4) Manual air vent 6) Throwaway filter 5) Throw away filter 7) Vertical / Horizontal drain pan (right-
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FORM 115.20-NOM4 (105) FORM 115.20-NOM4 (105) INSTALLATION PIPING • Heat can only be applied to the cup of the valve body for a min i mal time before damage occurs The supply and return piping must be adequately sized (even with the use of wet rags. to meet the design water flow requirements as specified • Avoid rapid quenching of solder joints, as this for the specific installation (see table 3 for connection sizes). All chilled water piping must be insulated to will produce joints of
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FORM 115.20-NOM4 (105) FORM 115.20-NOM4 (105) INSTALLATION 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 flow. Unit installed level to ensure proper drainage and operation. Unit installed with proper clearances. Ensure condensate water will drain toward the drain connection. An overflow drain may be required as a ba
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MAINTENANCE MOTOR The blower motor should be cleaned annually and if it Divide the total number of units on the job into six has oiling ports, it should be oiled with a good grade equal groups. Each week inspect, clean or replace of SAE 20 oil. Normally a few drops of oil in each the filters in each group, in rotation. This insures bearing is sufficient. a uniform servicing interval. The interval may be lengthened or shortened as determined by experience. If inspection shows only the
