Product data

23
Fan Coil Units
HVAC Guide Specifications
Size range: 1
1
/
2
to 3 Ton Capacity
Model Number: 40BNB, 40BNE
Part 1 — General
1.01 SYSTEM DESCRIPTION
Indoor, wall-mounted, direct-expansion fan coil to be
matched with the 38BN condensing or heat pump
units.
1.02 QUALITY ASSURANCE
Unit shall be rated per ARI Standards 210/240 and
listed in the ARI directory as a matched system.
Units shall be UL listed for sale in the U.S.A. and
Canada.
1.03 DELIVERY, STORAGE, AND HANDLING
Units shall be stored and handled per unit manufac-
turer’s recommendations.
1.04 WARRANTY
One-year parts.
Part 2 — Products
2.01 EQUIPMENT
A. General:
Indoor, direct-expansion, wall-mounted fan coil.
Unit shall be complete with cooling/heating (heat
pump systems only) coil, fan, fan motor, piping con-
nectors, electrical controls, microprocessor control
system, and integral temperature sensing. Unit shall
be furnished with integral wall-mounting bracket and
mounting hardware, and thermistor interconnec-
tion cable.
B. Unit Cabinet:
Cabinet discharge and inlet grilles shall be attrac-
tively styled, high-impact polystyrene. Cabinet shall
be fully insulated for improved thermal and acoustic
performance.
C. Fans:
Indoor fan shall be 3-speed tangential direct-drive
blower type with air intake at the upper front face of
the unit and discharge at the bottom front.
Automatic, motor-driven vertical air sweep shall be
provided standard.
Air sweep operation shall be user selectable. Hori-
zontal direction may be manually adjusted (using
remote controller) and air sweep may be manually
set.
D. Coil:
Coil shall be copper tube with aluminum fins and
galvanized steel tube sheets. Fins shall be bonded to
the tubes by mechanical expansion. A drip pan
under the coil shall have a drain connection for hose
attachment to remove condensate. Condensate pan
shall have internal trap and auxiliary drip pan under
coil header.
E. Controls:
Controls shall consist of a microprocessor-based
control system which shall control space tempera-
ture, determine optimum fan speed, and run self
diagnostics. The temperature control range shall be
from 54 F to 90 F. The unit shall have the following
functions as a minimum.
1. An automatic restart after power failure at the
same operating conditions as at failure.
2. A timer function to provide a minimum 24-hour
timer cycle for system.
3. Temperature-sensing controls shall sense
return-air temperature. Indoor-air high dis-
charge temperature shutdown shall be pro-
vided.
4. Indoor coil freeze protection.
5. Wireless infrared remote control to enter set
points and operating conditions.
6. Automatic airsweep control to provide on or off
activation of airsweep louvers.
7. Dehumidification mode shall provide increased
latent removal capability by modulating system
operation and set point temperature.
8. Fan only operation shall provide room air circu-
lation when no cooling is required.
9. Diagnostics shall provide continuous checks of
unit operation and warn of possible malfunc-
tions. Error messages shall be displayed at the
unit.
10. An indoor to outdoor thermistor connection
cable shall be provided with the fan coil unit.
11. Fan speed control shall be user-selectable: high,
medium, low, or microprocessor automatic
operation during all operating modes.
12. A time delay shall prevent compressor restart in
less than 3 minutes.
13. Automatic heating-to cooling changeover to
provide automatic heating and cooling opera-
tion. Control shall include deadband to prevent
rapid mode cycling.
14. Demand defrost shall be provided and shall
minimize defrost cycles by internally adjusting
defrost timing based on frost accumulation.
15. Indoor coil high temperature protection shall be
provided to detect excessive indoor discharge
temperature when unit is in heat pump mode.
F. Filters:
Unit shall have filter track with factory-supplied
cleanable filters.
G. Electrical Requirements:
Unit shall operate on 208/230 v, 60 Hz power sup-
ply as specified on the equipment schedule. Power
and control connections shall have terminal block
connections.
Guide specifications — indoor unit