Titus Fan Powered Term. IOM - Manual (Page 2)

Field Wiring
All field wiring must comply with the
local codes and with the National
Electrical Code (ANSI/NFPA 70-1996).
Disconnect switches are optional
equipment. Electrical, control, and piping
diagrams are shown on the exterior
labeling or on a diagram on the inside of
the control and high voltage enclosure
covers. Unless specified otherwise in
the order write-up, all units are wired for
a single point electrical connection to the
fan and optional electrical heater. All
electric heaters if provided by TITUS are
balanced by kW per stage. The installing
electrician should rotate incoming
electric service by phase in order to help
balance the building electric load.
Caution—Electrical Requirement:
1. Provide a safety disconnect per
NEC 424-19, 20 & 21.
2. Disconnect all incoming power
before wiring or servicing unit. All
disconnect switches on the terminal
(if so equipped) should be in OFF
position while making power
connections.
3. All field wiring must be in
accordance with NEC and local
code requirements. All units with
electric heat should have copper
wires for 125% of Nameplate
Amperage.
4. Observe wiring diagram and
instructions mounted on the unit.
480 V/3 phase units require a 4th
(neutral) wire in addition to the full
sized ground wire. All units must be
grounded as required by NEC 424-
14 and 250.
Unit Labeling
Each unit will have two main labels
attached to the casing. The FAN UNIT
label (Figure 3) lists the Model Number,
Supply Voltage requirements, Motor
Horsepower, and Overcurrent Protection
requirements. The AIR FLOW label
(Figure 4) lists the Model Number, Unit
Size, Factory Order Number, and
Location. The Location (or "Tag")
indicates the engineer's planned
location for the unit to be installed.
There may be other labels attached to
the unit, as options or codes may
require.
Please read all labels on a typical
unit, before beginning installation. If
you have any questions, please contact
the local TITUS Representative for
clarification. Have the key points from
the Air Flow label available for reference
before calling.
Control Start-up, Operation
Detailed information regarding power,
accessory and communications
connections, start-up and operating
procedures for the TITUS TD-1
controller (digital) or pneumatic and
analog controls are available from your
local TITUS representative. For specific
information on controls by other
manufacturers contact that
manufacturer’s local branch or dealer.
Note: Controllers may incorporate
specific communication addresses
based on Building Management
Systems Architecture, and original
engineering drawings. Installing the
terminal in a different location than
noted on unit label may result in
excessive start-up labor.
Primary Air Damper
TFS, TQS and TQP Models:
To replace the damper blade and/or
shaft assemblies:
a. Disconnect power before servicing.
Remove control enclosure cover to
access actuator.
b. Note position of damper shaft, using
indicating arrow. Loosen linkage or
actuator collar to allow damper to
rotate freely.
c. Remove bottom access door to
expose damper assembly. Rotate
damper to fully closed position,
exposing rivets holding damper
blade to shafts.
d. Drill out rivets using 1/2” drill, rotate
damper to fully open position, and
slide damper and/or shaft
assemblies out of the duct.
e. Fit new damper and/or shaft
assemblies in place, using 1/4-20
screws with lock nuts to replace
rivets.
f. Reverse procedure in steps c, b,
and a, for assembly. When locking
down actuator linkage or collar,
position indicating arrow on damper
in the same location as before the
repair.
FLS and FLP Models:
These units use an opposed blade
damper assembly that is not repairable.
The entire assembly must be replaced.
Figure 3. FAN UNIT Label
Figure 4. AIR FLOW Label
TU-FB-IOM 08-26-13
2 of 9
FAN UNIT
MODEL NO.: DTFS CODE: 88-XXXXX-A 2 REV: 02
MOTOR VOLT: 277 PHASE: 1 HZ 60
HP: 1/4 FLA(EA) 1.4
HEAT VOLT 277 PHASE 1 HZ 60
KW 6.0 AMPS 21.66
MOTOR (S) ARE THERMALLY PROTECTED
MIN. SUPPLY CIRCUIT AMPS:
24 AMP
MAX. FUSE OR OVERCURRENT PROTECTION: 30 AMP
MAX. OUTLET AIR TEMPERATURE: 200F
UNIT DESIGNED TO OPERATE AT NO LESS THAN 0.2 IWG STATIC PRESSURE
ZERO CLEARANCE FROM UNIT, CONNECTED DUCT AND/OR PLENUM
TO COMBUSTIBLE MATERIAL
303155001015
AIR
FLOW
UP
DTFS C12