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ZONED COMFORT CONTROL SYSTEM
WARNING
1. 120 Volts may cause serious injury from
electrical shock. Sudden operation may cause
serious injury from moving parts. Leave power
disconnected until installation is complete.
2. Sharp edges may cause serious injury from
cuts. Use care when making duct openings and
handling ductwork.
3. The Aprilaire Zoned Comfort Control System is
designed for indoor use only. Do not expose
any component of the zone control system to
moisture. Do not mount any Aprilaire Zoned
Comfort Control equipment where it may be
accessible to children.
CAUTION
1. Installation must be done in accordance with
all applicable codes.
2. Installer should touch a grounded metal object
before handling the Aprilaire control panel to
avoid potential loss of internal computer
programs due to static discharge.
3. A zoned comfort control system may not
control temperature properly unless the
heating and cooling system is
properly sized
and balanced.
4. Insufficient air flow or excessive temperatures
through the heating and cooling system could
result in equipment damage. Refer to the
manufacturer’s recommendations for minimum
safe airflow and temperature requirements.
5. Excessive pressure across a bypass
evaporative type humidifier may cause high air
velocity in the humidifier, resulting in water
being blown into the ductwork. Refer to Design
Guide for humidifier installation instructions.
6. Install an outdoor thermostat to prevent non-
seasonal equipment starts if using auto
changeover thermostats.
7. Do not mount the control panel on any part of
the heating/cooling equipment or ductwork.
8. Do not install control panel where
temperatures exceed 158°F (70°C).
Read this Installation Manual before beginning installation of the Aprilaire Zoned Comfort Control System.
For questions call Research Products Corporation at (800) 334-6011.
SAFETY INSTRUCTIONS
CAUTION: Installer must touch a
grounded metal object before
handling the Aprilaire Zoned
Comfort Control panel to avoid
potential loss of programs due to
static discharge.
1. MOUNT THE CONTROL PANEL
Four holes are provided on the back of the
unit for mounting. (See Figure 1)
• Mount indoors using #8 or #10 screws (field
supplied).
• Mount in location where the temperature will
not exceed 158°F and will not drop below
freezing (32°F).
• Do not mount on foundation walls, or on the
HVAC equipment or ductwork. These
locations can cause the enclosure to become
cooler than the surrounding air, which can
cause moisture to condense on the
enclosure.
6303
INSTALLATION
MANUAL
INSTALLATION
“THROUGH-THE-WALL”
WIRING HOLE,
2 PLACES
MOUNTING HOLE
2 PLACES
MOUNTING HOLE
2 PLACES
ENCLOSURE BASE
CONTROL BOARD
ENCLOSURE
COVER
#8 SCREWS (Field Supplied)
E-H
E
A
T
ON
OFF
E-H
E
A
T
ON
OFF
FIGURE 1