CaptiveAire DS165N, BSI080 Installation Manual
2 Tw in Ci ty IM 4 20 5
Installation
General
CAUTION: Sheet metal parts, screws, clips and similar
items inherently have sharp edges, and it is necessary
that the installer and service personnel exercise caution.
The installation of this equipment shall be in accordance
with the regulations of authorities having jurisdiction and
with all applicable codes.
This equipment is to be installed by an experienced installation company and fully trained personnel.
The mechanical installation of the inline centrifugal fan consists of making final connections between the unit, building
services, and duct connections.
1. These units have been run at the factory to insure excellent operation.
2. Before installing unit in ductwork (if damper is to be used)
make sure the damper is correctly installed. Refer to
Ta bl e 6 f or co rr ec t d am pe r s iz e .
3. Connect supply leads to the disconnect switch.
4. Check power supply to insure it is proper for the motor
supplied.
5. Determine if wheel is free to rotate and not subject to
misalignment in shipping or installation.
6. Install belts and adjust tension and lock capscrew in slot.
Te ns i on sh ou l d b e c he c ke d an d re se t , i f n ec e ss a ry, af t er
48 hours of operation. (BSI models only.)
7. Apply power and check wheel for proper rotation. Also
check unit RPM, motor volts and amperes, to insure
proper operation.
Check, Test & Start Procedure
WARNING
Electric shock hazard. Could cause severe injury or death. Failure to bond the frame of this equipment to the building
electrical ground by use of the grounding terminal provided or other acceptable means may result in electrical shock.
Disconnect electric power before servicing equipment. Service to be performed only by qualified personnel.
BEFORE STARTUP: Disconnect power to this unit before
servicing the unit.
1. Check to verify that the wheel is free to rotate.
2. Verify that supply voltage on the line side of disconnect
agrees with voltage on unit identification plate and is within the utilization voltage range as indicated in Table 1.
Tabl e 1. U ti li za ti on Vo lt ag e Ra ng es
3. On three-phase units check and calculate phase unbalance as follows:
% Voltage Unbalance = 100 x max. voltage deviation
from avg. voltage ÷ avg. voltage
Example: Determine the percent voltage unbalance given
voltages of 220, 216 and 213.
How To Use The Formula:
a. Avg. Voltage = 220 + 216 + 213 = 649 ÷ 3 = 216
b. Max. Voltage Deviation From Avg. Voltage =
220 – 216 = 4
c. % Voltage Unbalance = 100 x (4 ÷ 216) = 1.8%
Voltage unbalanc e sh oul d no t ex ceed 2%.
4. Apply power to unit and check rotation of wheel with the
directional arrow on the unit.
WARNING: All units run in a clockwise direction when viewed
from the air intake. If allowed to operate in the wrong direction, the motor will be overloaded and burn out
.
WARNING: Special attention should be paid to checking
three-phase units for rotation. For three-phase, rotation can
be changed by interchanging any two of the three line leads.
If unit is installed on temporary wiring, it should be rechecked
when permanently installed. Motor burn-out or tripped overload protection devices are usually the result of incorrect rotation.
5. Electrical Input Check: Perform check of fan ampere
draw and verify that motor nameplate amps are not
exceeded. Take account of the service factor range if
motor is nameplated above a 1.0 service factor.
6. Fan RPM Check: Fan the RPM should be checked and
verified with a tachometer. Refer to Table 2 for maximum
fan RPM values.
WARNING: Running the fan at an RPM greater than the maximum RPM value in Table 4 will overload the fan motor and
lead to premature motor failure.
WARNING: Do not replace motor sheave with one larger in
diameter. Do not replace fan sheave with one smaller in
diameter. The sheave ratios are set so that the motor will not
be overloaded within the range of the adjustable sheave.
SYSTEM VOLTAGE/ UTILIZATION VOLTAGE
UNIT NAMEPLATE MIN. MAX.
115/60/1 104 127
208-230/60/1 or 208-230/60/3 187 253
230/60/1 or 230/60/3 207 253
277/60/1 249 305
200/60/3 180 220
380/60/3 342 418
460/60/3 414 506
575/60/3 517 633
110/50/1 99 121
220/50/1 198 242
380-415/50/3 342 456
440/50/3 396 484
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