Aprilaire 8910 installation instructions Installation

Installation

Thermostat Installation location recommendations

Installation

Thermostat Wiring

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

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.

Wire specifications:
18-24 gauge thermostat wire
Installation notes:	1	2	3	T1	T2
• 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

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..

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..

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:	Do not mount equipment control module:
• In a location where the temperature will not exceed	• On foundation walls or on the HVAC equipment or
140°F (60°C) or drop below 32°F (0°C)..	ductwork.. These locations can cause moisture to
	condense on the equipment control module..

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).. Figure 1 Figure 2

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

2 3