TCF 14HA1B, 12HA2B, 12HA3B, 12HA1B, 14HA2B Installation, Operation & Maintenance Manual

HA/HAB Fiberglass

Wall Mount Ventilators

INSTALLATION, OPERATION & MAINTENANCE MANUAL

Throughout this manual, there are a number of HAZARD WARNINGS that must be read and adhered to in order
to prevent possible personal injury and/or damage to equipment. Two signal words "WARNING" and "CAUTION"
are used to indicate the severity of a hazard and are preceded by the safety alert symbol.

WARNING
Used when serious injury or death MAY result from misuse or failure to follow specific instructions.

CAUTION
Used when minor or moderate injury or product / equipment damage MAY result from misuse or failure to follow
specific instructions.

It is the responsibility of all personnel involved in installation, operation and maintenance to fully understand the
Warning and Caution procedures by which hazards are to be avoided.

IM-3100

August 2015

Receiving

The HA/HAB ventilator is shipped in two parts:

1. Fan housing assembly complete with fiberglass inlet
venturi to the wheel and complete motor and drive
assembly.

2. Flanged extruded aluminum louver assembly.

Duct adapter and companion angles are shipped loose
if unit is for inline application.

Inspect cartons or crates carefully before signing a
delivery receipt for the carrier. If any damage is
apparent, note it on the carrier’s receipt so that a claim
can be filed against the carrier through your usual
channels.

Handle the units carefully while delivering to installation
location. Use ordinary care in unpacking the units. If the
units, when unpacked, appear to be damaged in a way
that could not be determined at the time of delivery,
notify the carrier that concealed damage has been
discovered and insist on inspection by the carrier. Obtain
a copy of carrier’s inspection report showing the
concealed damages so that a claim can be filed through
your usual channels.

Study the attached installation prints carefully. Inspect
the units carefully for identification marks, fan rotation
symbols, etc.

Installation

Wall Application

1. Remove wood shipping supports from fan assembly
(see Figure 1).

1

2. Locate and provide hole in the wall
the fan housing (see Figure 2). This will provide an
opening for the electrical wiring into the unit.

3. Anchor the box in the wall, keeping a minimum of
23⁄8" between the outside wall and any part of the
box or the power assembly.

4. Fasten the flanged extruded louver to the exterior
wall.

Inline Application

1. Remove wood shipping supports from fan assembly
(see Figure 1).

2. Attach duct adapter and companion angles to unit
per Figure 3 with fasteners supplied.

3. Before anchoring the unit to the ductwork, check line
voltage and current characteristics outlined in previous
section.

4. Fasten the flanged extruded louver to the exterior wall
wherever the outlet of the ductwork ends.

For easy maintenance of the ventilator inline, provide a
drop-out section between ductwork and duct adapter
(see Figure 3).

⁄2" larger than

©1997 – 2018 Twin City Fan Companies, Ltd.

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.

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.

3. On three-phase units check and calculate phase
unbalance as follows:

% Voltage Unbalance = 100 x max. voltage deviation
from avg. voltage ÷ avg. voltage

Given example: With voltage 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 unbalance should not exceed 2%.

5. Electrical Input Check: Perform check of fan ampere
draw and verify that motor nameplate amps are not
exceeded. Take account of the service factory range
if motor is nameplated above a 1.0 service factor.

6. Fan RPM Check: Fan RPM should be checked and
verified with a tachometer. Refer to Table 2 for
maximum fan RPM values.

WARNING

Running fan at an RPM greater than the maximum
RPM value in Table 2 will overload the fan motor
and lead to premature motor failure.

Table 2. Maximum Fan RPM (Belt Driven Units)

MODEL

HAB

12HA1B, 2B, 3B
14HA1B, 2B, 3B
14HA4B
14HA5B
18HA1B, 2B
18HA3B
18HA4B
18HA5B
24HA1B
24HA2B
24HA3B
24HA4B
24HA5B
30HA1B
30HA2B
30HA3B
30HA4B
30HA5B
30HA5B

MOTOR

HP

1/4 1738
1/4 1468
1/3 1615
1/2 1849
1/4 945
1/3 1040
1/2 1191
3/4 1363
1/4 575
1/3 633
1/2 725
3/4 830

1 913
1/3 436
1/2 500
3/4 572

1 630

1

/2 721

1

2 793

MAXIMUM

FAN RPM

Table 1. Utilization Voltages

SYSTEM VOLTAGE/

UNIT NAMEPLATE

115/60/1
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

UTILIZATION VOLTAGE

MIN. MAX.

104 127

396 484

4. Apply power to unit and check rotation of wheel with
the directional arrow on the unit.

WARNING

Especially check three-phase units for rotation.
For three-phase, rotation can be changed by
interchanging any two of the three line leads. If the
unit is checked on temporary wiring, it should be
rechecked when permanently installed. Motor
burn-out or tripped overload protection devices
are usually the result of wrong rotation.

Maintenance

General

Fan shaft bearings on belt drive units are factory
lubricated and require no lubrication for the first 3-6
months of operation. Lubricate at intervals shown in
Table 3 thereafter. With fan running and with a low
pressure grease gun, add grease slowly until a slight
bead forms between the seals. Use Sinclair Litholene,
Shell Gadus S2 V100 2, Socony Vacuum Armvac 781,
Sinclair Oil Stranolith 57 or equal.

Table 3. Bearing Lubrication Interval
(Belt Drive Model HAB Only)

OPERATING CONDITION GREASING INTERVAL

FAIRLY CLEAN

MODERATE TO

EXTREMELY DIRTY

1. Frequency or regreasing will vary, depending on the hours of
operation, temperature and surrounding conditions.

2. Bearings have been prelubricated from factory with NLGI Grade
No. 2 lithium-12 hydroxysterate base grease.

Belts on belt-drive units should be readjusted after 24
hours of operation. Loosen motor base bolts and apply
15 lbs. pull per belt for proper belt tensions. Tighten
motor base bolts.

Check contact surfaces of belt for excessive wear. If
belts have a slick, glazed look or are cracked, belts are
slipping. Replace belts as required.

6 to 12 Months

1 Month

2

Twin City Installation and Maintenance Manual IM-3100

Motors require no lubrication for 10 years of normal
operation.

The inlet venturi is molded shock-resistant, bonded,
reinforced fiberglass and will require no maintenance.

Wall Application

1. Servicing or inspecting the unit can be accomplished
from the exterior by removing the flanged extruded
louver and from the interior of the building by
removing the fiberglass inlet (see Figure 2).

2. To remove the motor assembly for servicing, unplug
the motor from the provided outlet and unfasten the
four vibro-isolator bolts. The entire motor assembly,
including the wheel and bearing (belt drive units), will
slide out of the housing.

Figure 1. Removal of Wood Shipping Supports

Housing

Inline Application

For easy maintenance of the inlet unit, provide a dropout
section between the ductwork and duct adapter (see
Figure 3).

Servicing or inspection can then be accomplished by
removing the dropout section, then removing the
fiberglass inlet. The motor assembly can then be
removed by disconnecting the motor from the provided
outlet and unfastening the four vibro-isolator bolts.
Periodic inspection and cleaning of the fan will insure
smooth operation.

Figure 2. Wall Application

Electrical Wiring By Others

Instructions: Remove wood shipping supports
frame before installing unit

Hole Provided for Electrical Entrance Into Unit

Electrical Junction Box With Outlet

Belt Drive Motor
Assembly

.

Louver
Assembly

Fan

Housing

Assembly

Twin City Installation and Maintenance Manual IM-3100

Direct Drive Motor

Assembly

By Removing 4 Fasteners (Interior Side)

Trim Angle Assembly

Access To Power Pack of Ventilator

or Louvers (Exterior Side)

Fiberglass Inlet Venturi

3

Figure 3. Inline Application

Louver Assembly

on Exterior Wall

Wiring By
Others

Ductwork By Others

Duct Adaptor
(Shipped Loose
With Fasteners)

Ductwork By Others

Companion Angles (Shipped Loose)

With Fasteners)

Access to Power Pack of Inline

Unit By Removing 4 Fasteners

Dropout Section of Duct For

Easy Maintenance (By Others)

4

Twin City Installation and Maintenance Manual IM-3100

Location

Serviced by

Job Name: _______________________ Organization: _____________________
Address: _________________________ Address: _________________________
City / State / Zip: __________________ City / State / Zip: __________________
Telephone: ( ) _________________ Telephone: ( ) _________________
Contact: _________________________ Contact: _________________________

Fan

Nameplate Information

Motor

Nameplate Information

Model: _____________________

HP ____ Rpm _____

Volts _________

Serial #: ____________________

Phase ___ Hz ____

Amps _________ (FLA)

Tag/Mark: __________________

Mfr: ____________

Model: ___________
Location: ___________________ Frame _______ Enclosure _________
Date Installed: _______________ Thermal Protection: Yes ___ No ___

Air Volume: Design CFM __________ Power Supply ________ Volts _______

Fan Rpm: _______

Actual CFM __________ (actual)

Drives: Motor Sheave ______________ Bushing __________ Turns Open _____

Fan Sheave ______________ Bushing __________ Belt __________ Qty ___

Date Done By

MAINTENANCE

MAINTENANCE RECORD

Notes

Refer to page 2 for recommended maintenance.

Seller warrants to the original purchaser that the goods
sold hereunder shall be free from defects in workmanship
and material under normal use and service (except in
those cases where the materials are supplied by the
buyer) for a period of one year from the date of original
installation or eighteen (18) months from the date of
shipment, whichever occurs first. The liability of seller
under this warranty is limited to replacing, repairing, or
issuing credit (at cost, F.O.B. factory and at seller’s
discretion) for any part or parts which are returned by
buyer during such period provided that:

a. seller is notified in writing within ten (10) days

following discovery of such defects by buyer, or
within ten (10) days after such defects should
reasonably have been discovered, whichever is less;

b. the defective unit is returned to seller, transportation

charges prepaid by buyer.

c. payment in full has been received by seller or said

products; and

d. seller’s examination of such unit shall disclose to its

satisfaction that such defects have not been caused
by misuse, neglect, improper installation, repair,
alteration, act of God, or accident.

Limited Warranty

No warranty made hereunder shall extend to any seller
product whose serial number is altered, effaced or
removed. Seller makes no warranty, express or implied,
with respect to motors, switches, controls, or other
components of seller’s product, where such components
are warranted separately by their respective manufacturers.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, WHETHER
STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE. In no event shall seller be
liable to buyer for indirect, incidental collateral, or
consequential damages of any kind. (BUYER’S FAILURE
TO PAY THE FULL AMOUNT DUE WITHIN SIXTY (60)
DAYS OF DATE OF INVOICE SHALL OPERATE TO
RELEASE SELLER FROM ANY AND ALL LIABILITY OR
OBLIGATION ARISING PURSUANT TO ANY WARRANTY,
EXPRESS OR IMPLIED, WHETHER STATUTORY OR
OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OR
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, MADE IN CONNECTION WITH ANY
CONTRACT FORMED HEREUNDER. BUYER AGREES
THAT SUCH FAILURE TO PAY SHALL CONSTITUTE A
VOLUNTARY WAIVER OF ANY AND ALL SUCH
WARRANTIES ARISING PURSUANT TO SUCH CONTACT.)

Twin City Installation and Maintenance Manual IM-3100

5

TWIN CITY FAN & BLOWER | WWW.TCF.COM

5959 Trenton Lane N | Minneapolis, MN 55442 | Phone: [phone] | Fax: [phone]