Twin City Centrifugal Roof & Wall Exhausters - IM-4050 - Manual (Page 2)

2 Twin City IM-4050
Wall Fan Installation
1. Your wall fan is shipped with a wall mounting brack-
et. Refer to the wall fan dimensional drawing on
page 4 for mounting hole locations. Consideration
should be taken when choosing wall fan location
with regard to other buildings, parking lots, etc.
2. After drilling pilot holes, bolt the wall mounting
bracket to the wall through the holes provided on
the bracket flange using eight (8) lag bolts.
3. Position fan with the motor compartment breather
tube facing downward. NOTE: On Models BCRWR
and DCRWR, the breather tube can be facing
downward or towards either side. Do not install with
breather tube facing up.
4. Run wires through conduit to switch. Leave some
slack in the wire in the motor compartment so that
the motor and wheel assembly can be lifted for
inspection and cleaning. If fan has an external dis-
connect switch (standard on restaurant units) bring
power to switch.
5. Bolt the fan base to the wall bracket using hardware
provided.
6. Make connection to the disconnect switch per
above electrical instructions.
7. Restaurant fan installation must be in compliance
with local codes and the National Fire Protection
Association’s NFPA-96.
8. Models DCLH, DCLP, DCRD, DCRU, DCRUR,
BCLH, BCLP, BCRD, BCRD-E, BCRU, BCRUR and
BCRUSH are not designed to be mounted to a wall.
Electrical Connection
1. Connect supply wiring to the disconnect switch
(non-fused standard). Check the wiring diagrams on
the motor for connections.
2. The motor is factory set at the voltage marked on
the fan nameplate. Check the line voltage with the
nameplate voltage and wiring diagrams.
3. The main power wiring should be sized for the
ampacity shown on the dataplate. Size wires in
accordance with the ampacity tables in Article 310
of the National Electrical Code. If long wires are
required, it may be necessary to increase wire size
to prevent excessive voltage drop. Wires should be
sized for a maximum of 3% voltage drop.
CAUTION: Use copper conductors only.
CAUTION: Protect wiring from sharp edges. Leave
some slack in the line to prevent damage.
4. Disconnect switches are not fused. The power leads
must be protected at the point of distribution in
accordance with the fan dataplate.
5. On fans without a thermal protector integral to the
motor (refer to unit or motor dataplate to determine
if protector is present) a separate overload device
is required. Refer to Sections 430-32 of the N.E.C.
for sizing.
6. All units must be electrically grounded in accordance
with local codes or, in the absence of local codes,
with the latest edition of the National Electrical
Code (ANSI/NFPA 70). A ground lug is provided as
standard in the unit terminal box. Size grounding
conductor in accordance with Table 250-95 of the
National Electrical Code. DO NOT use the ground
lug for connecting a neutral conductor.
7. Supply voltage to the power ventilator should not
vary by more than 10% of the value indicated
on the unit dataplate. Phase unbalance must not
exceed 2%.
WARNING: Failure of motor due to operation on
improper line voltage or with excessive phase unbal-
ance constitutes product abuse and may cause
severe damage to the unit’s electrical components.
SIZE SHIP MOTOR LOOSE
070D – 160D
100HP – 160HP
• Motor HP larger than shown on TCF&B Price
List P-4105
180D – 240D
180HP – 210HP
• 143T and larger – ODP/TE Cast iron frames
• 145T and larger – ODP/TE Rolled frames
• 143T and larger – Explosion-proof motors
300D – 360D
240HP – 300HP
• 182T and larger – ODP/TE Cast iron frames
• 184T and larger – ODP/TE Rolled frames
• 182T and larger – Explosion-proof motors
420D – 480D
360HP, 540
• 184T and larger – ODP/TE Cast iron frames
• 213T and larger – ODP/TE Rolled frames
• 184T and larger – Explosion-proof motors
BCRD, BCRD-E, BCLH, BCLP
Larger motors will ship loose in order to prevent shipping damage, per the following charts.
SIZE SHIP MOTOR LOOSE
110B – 160B
140HP – 160HP
• 143T and larger – ODP/TE Cast iron frames
• 145T and larger – ODP/TE Rolled frames
• 143T and larger – Explosion-proof motors
180B – 240B
180HP
• 145T and larger – ODP/TE Cast iron frames
• 182T and larger – ODP/TE Rolled frames
• 145T and larger – Explosion-proof motors
300B – 360B
210HP – 300HP
• 182T and larger – ODP/TE Cast iron frames
• 184T and larger – ODP/TE Rolled frames
• 182T and larger – Explosion-proof motors
420B – 480B
360HP
• 184T and larger – ODP/TE Cast iron frames
• 213T and larger – ODP/TE Rolled frames
• 184T and larger – Explosion-proof motors
BCRU, BCRUR, BCRUSH, BCRW, BCRWR
Shipment of Motors