Terminal Designations; Wiring Diagram; Installation And Commissioning - Honeywell T6861-F Quick Start Manual

Terminal Designations

Terminal
L
Ch/Cc
W/Y
N
Gl
Gm
Gh
Sc
Rs

Wiring diagram

Application 1: 2 pipes heat only wiring diagram
Heat valve
Fan
remote sensor
Figure 0-1 Typical wiring for 3-wire control in 2 pipe heating only
Application 2: 2 pipes Cool only wiring diagram
Cool valve
Fan
remote sensor
Figure 0-2 Typical wiring for 3-wire control in 2 pipe cooling only
4
Description
Line voltage Power
Valve close
Valve open
Line voltage ground
Low speed fan relay
Medium speed fan relay
High speed fan relay
Ground for remote sensor
Remote sensor
Application 3: 2 pipes 1 stage Heat or 1 stage Cool
MCO wiring diagram
valve
Fan
remote sensor
Figure 0-3 Typical wiring for 3-wire control in 2 pipes 1H1C
Installation & Commissioning
Install the thermostat about 5 feet (1.5m) above the
floor in an area with good air circulation at average
temperature.
Do not install in locations where the thermostat can
be affected by:
• Drafts or dead spots behind doors and in corners
• Hot or cold air from ducts
• Sunlight or radiant heat from appliances
• Concealed pipes or chimneys
• Unheated/uncooled areas such as an outside wall
1 Pull wires through wire hole.
Loosen screw terminals, insert wires into terminal
Block, then retighten screws.