Installation; Thermostat Installation Location Recommendations; Thermostat Mounting; Equipment Control Module Installation Location - Aprilaire 8910 Safety & Installation Instructions

INSTALLATION

THERMOSTAT INSTALLATION LOCATION RECOMMENDATIONS

Thermostat should be mounted:
• On an interior wall, in a frequently occupied space .
• Approximately 5' above floor .
• At least 18" from outside wall .
• Thermostat can be mounted to a vertical junction box .

THERMOSTAT MOUNTING

1 . Remove the rear mounting plate from the thermostat .
2 . Pull wires through the opening on the back of the thermostat .
3 . Position and level the mounting plate of the thermostat on
wall and mark the hole locations with a pencil .
4 . Drill 1/4" holes and insert supplied anchors (drywall only) .
5 . Place mounting plate over anchors, insert and tighten screws .
6 . Seal wire entry holes to prevent drafts affecting temperature
readings .
EQUIPMENT CONTROL MODULE INSTALLATION LOCATION RECOMMENDATIONS
Note: Installer must touch a grounded metal object before handling the Equipment Control Module to avoid potential
loss of programs due to electrical discharge .
Equipment control module should be mounted:
• In a location where the temperature will not exceed
158°F (70°C) or drop below 32°F (0°C) .

EQUIPMENT CONTROL MODULE MOUNTING

The Equipment Control Module has the following features to simplify mounting and wiring and provide for a clean
and neat installation .
• Six (6) mounting holes . One on each corner and two centered top and bottom . Any combination of these holes may
be utilized . Mount the Equipment Control Module using 2 to 4 #8 screws appropriate for the mounting surface
substrate . (See Figure 2 .)
• Wires can be routed through
the top, bottom, sides or back .
• Nylon wire ties can be used
to secure wires in 10 places .
Installation Steps
1 . Select mounting location .
2 . Pull from bottom to remove
front cover . (See Figure 1 .)
3 . Mount base using 2 to 4 #8
screws (field supplied) .
2
Do not mount thermostat:
• Behind doors, in corners or other dead air spaces .
• In direct sunlight, near lighting fixtures, or other
appliances that give off heat .
• On an outside or unconditioned area wall .
• In the flow of a supply register, in stairwells, or near
outside doors .
• On a wall with concealed pipes or ductwork .
Do not mount equipment control module:
• On foundation walls or on the HVAC equipment or
ductwork . These locations can cause moisture to
condense on the equipment control module .
Figure 1 Figure 2
INSTALLATION

THERMOSTAT WIRING

Wire specifications:
18-24 gauge thermostat wire
Installation notes:
• Ensure power at the HVAC equipment is off .
• Loosen screw terminals, insert stripped wire
and re-tighten .
• Push the excess wire back into the opening and plug the wall opening to prevent drafts .
1 – Connection to terminal 1 at equipment control module
2 – Connection to terminal 2 at equipment control module
3 – Connection to terminal 3 at equipment control module
T1 & T2 – Remote temperature sensor (optional)

REMOTE TEMPERATURE SENSOR (OPTIONAL)

A remote temperature sensor can be used if the thermostat is to be mounted in a concealed location . A 8051 flush
mount or 8053 surface mount remote temperature sensor can be attached to the T1 and T2 terminals and mounted
in a recommended area . The remote sensor must be enabled in the installer set-up menu, and once enabled will
override the thermostat's internal temperature sensor .
Remote temperature sensor should be
mounted:
• On an interior wall, in a frequently occupied
space .
• Approximately 5' above floor .
• At least 18" from outside wall .
• Using less than 300' of wire .
Do not mount remote sensor:
• Behind doors, in corners or other dead air
spaces .
• In direct sunlight, near lighting fixtures, or
other appliances that give off heat .
• On an outside or unconditioned area wall .
• In the flow of a supply register, in stairwells,
or near outside doors .
• On a wall with concealed pipes or ductwork .
• Near 120 VAC lines .
1 2 3 T1 T2
1 2 3 T1 T2
3