First Co HBXX (High Efficiency ECM) - Manual

Sufficient clearance must be provided
at the front of the fan coil to allow
access to electrical controls and re-
moval of the motor/blower assembly
for servicing. This clearance distance
should be approximately the same as
the depth of the fan coil unit.
HORIZONTAL
APPLICATION
HBX/MBX fan coil units are factory
assembled for horizontal left side
down application without any modifi-
cation required. To convert to horizon-
tal right side down, remove the hori-
zontal drain pan and A-coil assembly,
flip the horizontal drain pan over to the
right side and re-install the horizontal
drain pan and A-coil into the cabinet.
Secure the forward edge of the hori-
zontal drain pan with the leveler angle
bracket. 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 Protec-
tion Association Codes 90A and 90B.
Ducts should be adequately insulated
to prevent condensation during the
cooling cycle and to minimize heat
loss during the heating cycle. 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. In many
cases it is acceptable to use ducting
of the same size as the fan coil con-
nections. However, unique arrange-
ments or long duct runs must be
HBX / MBX SERIES
FAN COIL UNITS
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
GENERAL
The manufacturer assumes no re-
sponsibility 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 instruc-
tions.
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 pres-
ence 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 require-
ments pertaining to the installation of
this equipment. These units are de-
signed to be installed in either an
upflow or horizontal left or right side
down position.
****** WARNING ******
Unit must not be operated
during building construction
due to excessive airborne dust
and debris. The unit must not
be operated under any
circumstances without an air
filter in place.
confirmed by a local professional. The
manufacturer will not be responsible
for misapplied equipment.
ELECTRICAL
Fan coil units with 10kW or less
electric heat are provided with a termi-
nal block for connection of 1 electrical
service. Units with 15kW and 20kW
are provided with dual circuit breakers
for the connection of 2 electrical ser-
vices and units with 25kW are pro-
vided with 3 circuit breakers for the
connection of 3 separate electrical
services. (Figure 1)
All wiring must comply with local
and national code requirements.
Units are provided with wiring dia-
grams and nameplate data to provide
information required for necessary
field wiring. Knockouts are provided
on the cabinet for connection of power
supply.
These units are 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 pre-
vent interconnecting outputs of the
two transformers by using a thermo-
stat with isolating contacts.
**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.
L247B 9/03
****** WARNING ******
Extreme caution 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 clear-
ance to combustible materials. This
includes the fan coil cabinet, dis-
charge plenum and connecting ducts.