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Installation -
Thermostat (Cont.)
Wireless wall thermostats are designed to provide precise
thermostat control without the installation labor and
expense of wiring.
• Powered by 24 Vac or AA batteries
• Mounts in any suitable location that will provide
an accurate room temperature reading.
• Large LCD display provides the user with current
room temperature, set point temperature, time,
program interval, and other system status
information.
remote Control node
Used with a wireless wall thermostat, the RCN commu-
nicates with the thermostat using unlicensed 900 MHz,
radio frequency range.
During a call, the remote thermostat will pass R back to
the controller on a respective terminal. See below for
descriptions of each terminal.
terminal r (red)
Low voltage terminal to supply voltage to an external
wall-mounted thermostat. This terminal is capable of
supplying 100 mA at 18-30 Vac RMS over the entire
input voltage range specified.
THERMOSTAT
MAXIMUM WIRING
LENGTH FOR THERMOSTAT
CONNECTION TO UNIT:
66 FT. FOR 18 AWG
60 FT. FOR 20 AWG
(AWG - AMERICAN WIRE GAUGE)
UNIT CONNECTIONS
terminal FD (Purple)
When this low voltage terminal is connected to the R
terminal, the compressor and electric heater are disabled
to provide an energy management system interface.
terminal Gh (Green)
When this low voltage terminal is connected to the R
terminal and the unit is in remote mode, the blower/fan
will be requested for operation on high speed.
terminal B (Blue)
When this low voltage terminal is connected to the R
terminal and the unit is in the remote mode, the revers-
ing valve is energized. Hydronic and electric heat shall
be attempted as backups if the B terminal is asserted and
the compressor is locked out or disabled. This is subject
to the configured heat modes available.
terminal y (yellow)
When this low voltage terminal is connected to the R
terminal, and the unit is in remote mode, the compressor
will be switched on (the GL or GH terminal must also be
connected to the R terminal).
terminal W (White)
When this low voltage terminal is connected to the R ter-
minal, and the unit is in the remote mode, first hydronic
heat is attempted, and electric heat is switched on as
backup (the GL and GH terminal must also be connected
to the R terminal). This is subject to the configured heat
modes available.
terminal Gl (orange)
When this low voltage terminal is connected to the R
terminal, and the unit is in remote mode, the blower/fan
will be requested for operation on low speed.
terminal C (Black)
Low voltage terminal, 24 Vac common, to provide oppo-
site polarity voltage to wall thermostat.
