First Co MBE User Manual

MBE SERIES FAN COIL UNIT

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS

GENERAL

The manufacturer assumes no
responsibility for equipment in­stalled in violation of any code re­quirement.
These instructions give informa­tion relative to the installation of
these fan coil units only. For other
related equipment refer to the
proper instructions.
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.

FAN COIL UNIT

The installer must adhere strictly
to all local and national code re­quirements pertaining to the instal­lation of this equipment.
These units are designed to be
installed in either an upflow or hori­zontal left side down position.

WARNING:

must be taken that no internal
damage will result if screws or
holes are drilled into the cabinet.

All fan coil units are U.L. Listed
for installation with zero inches
clearance to combustible materi­als. This includes the fan coil cabi­net, discharge plenum and con­necting ducts. Sufficient clear­ance must be provided at the front
of the fan coil to allow access to

Extreme caution

electrical controls and removal of
the motor / blower assembly for
servicing. This clearance distance
should be approximately the same
as the depth dimension of the fan
coil unit.

HORIZONTAL
APPLICATION

The MBE Fan Coil Units are fac­tory assembled for horizontal ap­plication without any modification
required. However the unit should
be leveled in such a way that there
is slope toward the condensate
drain nipple to assure positive
drainage.

AIR DISTRIBUTION
DUCTS

All duct work must be installed in
accordance with National Fire Pro­tection Association Codes 90A and
90B. The return air duct must have
the same free area as the opening
provided on the fan coil unit. If
there is no ducted return, appli­cable installation codes may limit
the unit to installation only in a
single story residence.

ELECTRICAL

All wiring must comply with local
and national code requirements.
Units are provided with wiring dia­grams and nameplate data to pro­vide information required for nec­essary field wiring. Knockouts are
provided on the cabinet for connec­tion of power supply.
These fan coil units are provided
with a Class 2 transformer for 24­volt control circuits. Should any
add-on equipment also have a

Class 2 transformer furnished,
care must be taken to prevent inter­connecting outputs of the two
transformers by using a thermostat
with isolating contacts.

PIPING

These fan coil units are supplied
with a chilled water coil. Each coil
has a 1/4 inch bleed valve.
Sweat connnections are re­quired at the coil.
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 inches must be pro­vided in the drain line to assure
proper drainage.

OPERATING AND
MAINTENANCE

Prior to start-up, inspect the
blower to assure the wheel turns
freely without rubbing on the hous­ing. See that the air filter is properly
positioned in the unit, then replace
access panel.
The air filter should be cleaned or
replaced as often as necessary to
prevent restriction of air flow. Al­ways replace the filter with the
same type as originally furnished.
The blower motor should be
cleaned and oiled with a good
grade of SAE 20 oil annually. Nor­mally a few drops of oil in each
bearing is sufficient.

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