Figure 3
MAINTENANCE
5. Rough-in wiring to heater. See Table 2 for line amperes, rec-
ommended wire size and conduit size.
6. Wire heater per wiring diagram supplied with this instruction
sheet.
Note: Power relay(s) are provided as standard on all heaters.
Prior to operating the heater, verify that the fan hub
setscrews are tightened and the push-on clip is
secured to assure that the fan blade is securely fas-
tened to the motor shaft. Failure to comply could
result in personal injury or property damage.
7. Carefully inspect the completed installation. Rotate the fan
blade by hand to be sure that it turns freely. Investigate any
binding, rubbing or interference.
8. Air diffusers for deflecting the air are optional. See Instruction
Sheet PF449 for installation instructions.
ELECTRIC SHOCK HAZARD. Disconnect all power
to heater before servicing or replacing heaters. Do
not attempt to service heater while unit is operat-
ing as there is hazard of electric shock, injury
from operating fan, and burns from hot heating
elements.
1. Before activating for next heating season, vacuum or use com-
pressed air to remove accumulated dust or lint, which other-
wise may restrict proper air flow.
2. Periodically check all electrical connections and retighten to
avoid electrical wiring difficulties.
Note: For 208-240V motor wiring, red and yellow motor wires to be connected at T2
terminal.
MOTOR LUBRICATION
Motors in VUH-C-05 through VUH-C-10 have sleeve bearings which are factory lubri-
cated. Relubricate annually, if neccessary, with No. 10 non-detergent oil.
Note: All fan motors are totally enclosed and internally thermal overload protected.
