T6372/T6373 FAN -COIL TERMOSTATS 2-PIPE FAN-COIL CONTROL
EN002-0903
3
INSTALLATION
OPERATION
Sensing element
The thermostat sensing element comprises two circular,
flexible metal plates welded together at the rims and
encapsulating a gas/liquid combination whose pressure
changes in response to variations in temperature. This dual-
diaphragm expands and contracts with ambient temperature
changes to operate a snap-acting switch which controls the
heating or cooling circuit.
Heat anticipator
It is recommended that the heat anticipator is always
connected for both heating and cooling operation.
Location
The XE70 Series thermostat is the temperature control
element in the fan-coil or air-conditioning system, and must
be located in a position with good air circulation, on an inside
wall about 1.5 m above the floor to sense the average
temperature. Do not position the thermostat in draughts,
near hot or cold air sources or where it will be affected by
radiant heat from the sun or other appliances.
Mounting the thermostat
Any XE70 Series thermostat can be directly mounted on the
wall or on a conduit box (see diagram). Mounting screws are
supplied for both alternatives.
Wiring the thermostat
The standard wiring access is via a hole in the base of the
thermostat, near the top edge.
IMPORTANT
1. The installer must be a trained service engineer
2. Disconnect the power supply before beginning
installation
Switches
All switches are slide switches for ease of operation.
The ON/OFF switch is a system on/off switch, as it removes
power from the thermostat.
The FAN SPEED switch allows selection of 3 different fan
speeds, 1 (low), 2 (medium), and 3 (high)
The SPDT HEAT/COOL switch allows selection of either
heating or cooling operation. There is only a single output
connection capable of powering a fan or a single zone valve
in a 2-pipe fan-coil unit.
Application
T6372A T6372B T6372B T6372C T6373AC T6373BC
1018
1024
1032
1014
1108 1130
Ventilation
F
F
F
2-pipe fan-coil
F
F
F
F
F
F
Application
4-pipe fan-coil
Heatpump
Air-conditioner
Heat or Cool
F
F
Heat/cool
F
F
F
F
Control
Changeover (auto or manual)
manual
manual
auto
manual
Capability
Fan control (auto or cont)
a or c
a or c
a or c
a or c
cont
cont
Fan speed control
F
F
Valve control
F
F
F
F
F
F
Compressor control