YORK INTERNATIONAL
2
FORM 115.20-NOM4 (105)
3
YORK INTERNATIONAL
INSTALLATION
FORM 115.20-NOM4 (105)
RECEIVING
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.
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 dam-
age.
DESCRIPTION
The YMB Series 2-pipe fan coil comes with a 4-row
cooling / heating coil and a 120V multi-speed mo-
tor.
The YMBE Series 240V, 2-pipe fan coil comes with a
4 row-cooling coil, 240V multi-speed motor, 240/24
transformer, and up to 25kW of factory installed elec-
tric heat. Models with more than 10kW also include a
circuit breaker for branch circuit protection. Control
voltage is 24V.
The YMBE Series fan coil comes with a 4-row cool-
ing coil, 277V multi-speed motor, and up to 10kW of
factory installed heat. A unit mounted disconnect is
standard.
The YMB-HW Series 4-pipe fan coil includes a 4 row
cooling coil, a 2, 3, or 4 row heating coil installed in
the reheat position, and a 120V multi-speed motor.
If damage is found, a claim should be
filed against the carrier immediately.
HORIZONTAL APPLICATION
These fan coil units are factory assembled for horizon-
tal left side down application without any modification
required. To convert to horizontal right side down,
remove horizontal drain pan and A-coil assembly, flip
horizontal drain pan over to right side and reinstall
horizontal drain pan and A-coil into cabinet. Secure
forward edge of horizontal drain pan with angle
bracket. The unit should be leveled in such a way
that there is slope toward the condensate drain nipple
to assure positive drainage.
WIRING
All wiring must comply with the local and national
code requirements. Units are provided with wiring
diagrams and nameplate data to provide information
required for necessary field wiring. All wiring must
comply with local and national code requirements.
YMBE SERIES
Fan coil units with 10kW or less electric heat are
provided with a terminal block for connection of one
electrical service. Units with 15 kW and 20kW are
provided with dual circuit breakers for the connection
of two electrical services and units with 25kW are pro-
vided with three circuit breakers for the connection of
three separate electrical services
(see Figure 2 & 3).
These units may be provided with a class 2 transformer
for 24-volt control circuits. Should any add-on equip-
ment also have a class 2 transformer furnished, care
must be taken to prevent interconnecting outputs of
the two transformers by using a thermostat with iso-
lating contacts.
Any devices such as fan switches or
thermostats that have been furnished
by the factory for field installation
must be wired in strict accordance
with the wiring diagram that is sup-
plied with the unit. Failure to do so
could result in damage or injury.
