Titus UnderFloor Products IOM - Manual (Page 4)

4 Installation Manual - Underfloor Products
Underfloor Products IOM
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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
Figure 3. Figure 4.
FAN UNIT
MODEL NO.: DLHK CODE: 88-XXXXX-A 2 REV: 02
MOTOR VOLT: 277 PHASE: 1 HZ 60
HP: 1/3 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
DLHK
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 instal-
lation. If you have any questions, please contact the local Titus Rep-
resentative for clarification. Have the key points from the AirFlow label
available for reference before calling.
Field Wiring