4
Optional Equipment
• Universal Swivel Bracket - Field installed (See
PF926 for installation instructions)
• Drip Shield - Field installed (See PF927 for installa-
tion instructions)
• Built-in Thermostat - Factory installed (bulb and
capillary type) for automatic temperature control.
The thermostat controls the heating elements and
fan simultaneously to achieve set temperature.
The Lo setting of the thermostat is approximately
40˚F (4˚C) and the Hi setting is approximately 100˚F
(38˚C).
• Heat-Cool Switch - Factory installed (heater on,
heater off, fan only) to permit air flow with or without
energizing the heating elements. The switch is ac-
cessible from outside the NEMA 4X enclosure.
•
“On” Pilot Light - Factory installed to indicate when
power is on.
•
Internal Fusing - Factory installed
• Manual Reset Cutout - Factory installed
• Disconnect Switch - Field/Factory installed See
document PF928 for installation instructions
• For wiring diagram containing options, see label
on inside cover of terminal box
Package Contents
A.
B.
Item
Quantity
Description
A
1
HD3D Unit Heater
1
B
3
Standard Mountng Bracket
1
Aside from mounting brackets, unit heaters with factory installed
accessories are shipped fully assembled.
