American Standard AccuLink Platinum 850 Installation Manual Download Page 4

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Installation Guide

11-HD14D1-9-EN

4. Installation

4.1 Location

The 850 is designed for installation in climate controlled
living spaces. Place the unit in a central location with good
circulation.
For proper temperature sensing, avoid exposing the 850 to
heat radiated from lamps, sun light, fireplaces or any other
radiant heat source.
Avoid locations close to windows, behind doors or alcoves
with poor air circulation, adjoining outside walls, or doors
that lead to the outside.
Select a location that prevents the 850 from being directly
exposed to air currents from supply registers or ceiling fans.
Mount the Control on a section of interior wall that does not
contain hot or cold water pipes or duct work.
Important: The 850 Control utilizes a 4.3” color touch
screen. This screen generates heat which is vented out
the top of the Control utilizing natural convection. If an air
source is directed at or from above, heat from the screen
can be trapped within the Control and can cause the indoor
temperature to be biased. (Refer to Figure 1 on page 4.)

4.2 Network Connections

To take advantage of the full range of features on the 850
Control, it should be connected to the Internet. This is
possible using either a wireless or a wired connection.

Wireless Connections

If the 850 Control will be connected to the Internet using the
built-in wireless feature, choose a mounting location that
ensures adequate signal strength from the Internet router.
Tips to Help Maximize Signal Strength:

— Do not mount the Control more than 30 feet from the

wireless router

— There should be no more than three interior walls

between the Control and the router.

— Do not mount the Control in areas where

electromagnetic emissions from other devices,
appliances or wiring can interfere with the Control’s
communication. (i.e. wireless phones, security
systems, wireless Internet cameras).

— Do not mount the Control in recessed areas,

near metal objects, or near structures. (i.e. doors,
appliances, entertainment centers or shelving units).

— Do not mount the Control closer than 2 inches to any

pipes, duct work, or other metal obstructions.

— Do not have metal obstructions, concrete or brick

walls between the Control and the router.

Refer to the 850 User Guide for additional information on
connecting the 850 to the Internet.

Wired Connections

The 850 Control may be connected to the Internet using its
built-in RJ-45 connector. When using a wired connection,
verify that a CAT 5 or better Ethernet cable with a male
RJ-45 connector is present from the router to the Control.

4.3 Mounting

Follow these steps to mount the 850 Control to the wall.

1. Turn OFF all power to heating and cooling equipment.
2. If an existing thermostat is being replaced:

a.  Remove the existing thermostat from the wall.
b.  Record color and terminal marking of each wire.
c.  Disconnect the wires from the existing thermostat

being careful not to allow them to fall back into
the wall.

3. Carefully pry the Sub-base away from the 850 Control

using a small flat-blade screwdriver. Note that the
tight fit is normal and ensures that the Control is held
securely to the Sub-base when mounted on the wall.

4. Route the wires through the opening on the Sub-base.
5. If using a wired Internet connection, route the Ethernet

cable through the opening.

Incorrect
Placement

Problematic Air Patterns

Natural heat

dissipation

from the

Touch Screen

Onboard

Thermistor

5 FEET

Optimum
Zone