XE70 SERIES T6372/T6373
PRODUCT SPECIFICATION SHEET
The T6372 and T6373 are designed to control the valve, or
the valve and the fan in 2-pipe fan-coil applications.
The thermostat operates an on/off valve to provide control at
the desired setpoint temperature.
The fan can also be controlled from the thermostat. In some
cases it is wired to run continuously, and can be switched off
with the system ON/OFF switch, while with other models
there is a choice of running the fan continuously, or cycling it
with the thermostat.
Versions are available with a manual 3-speed fan switch, and
with a system on-off switch.
Heat/cool changeover operation is also possible on some
versions. This function can be accomplished either by a
manually operated heat/ cool switch on the front of the
thermostat or in some versions automatically by the use of a
pipe thermostat on the supply water pipe of the fan-coil.
FEATURES
Dual diaphragm sensing element ensures close
temperature control for all loads and applications
Attractive modern styling makes this thermostat ideal
for locating in the occupied space, particularly in
offices or hotels
All versions have heat anticipator, which improves
temperature control in both heating and cooling
operation
Thermostat mounts directly onto a wall or conduit
box
Slide switches allow manual control of system
operation and fan speed
Auto heat/cool changeover possible (on some
versions) by using pipe thermostat
Optional extras:
- range stops F42006646-001 (20 per pack, enough for
10 thermostats)
FAN-COIL THERMOSTATS
2-PIPE FAN-COIL CONTROL
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T6372/T6373 FAN -COIL TERMOSTATS 2-PIPE FAN-COIL CONTROL
2
SPECIFICATIONS
Model
Switches
Features
ON/OFF
3-speed
Fan/
Heat/Cool
Heat/Cool
Heat/Off/
Heat/Fan/
Fixed
Auto
Fan
Auto/Cont
Cool
Cool
Deadband
Change-
over
(SPST)
(SPTT)
(SPDT)
(SPDT)
(DPDT)
(DPTT)
(DPTT)
T6372A1018
■
T6372B1032
■
■
T6372C1014
■
T6373A1017
■
■
T6373A1157
■
■
†
T6373B1015
■
■
■
T6373B1064
■
■
■
T6373C1013
■
■
† = central changeover possible for multiple units, requires central switch
Setpoint range
10...30oC. By means of a large setpoint
dial
Supply voltage
230 V~, 50...60 Hz
Thermostat
switch
S.P.D.T.
Performance
Typical differential 1K (heating & cooling)
at 20oC at 50% load with anticipator
connected
Electrical ratings
4(2) A, 230 V~
Typical loads are fans, zone valves and
relays
Operational life
Greater than 100,000 cycles (all loads)
for thermostat contacts at 230 V~ Greater
than 6,000 operations for all manually
operated switches
Mounting
Mounts directly onto wall or wall-box
(mounting screws supplied)
Wiring
Up to 8 screw-in terminals per unit,
capable of accepting wires up to 1.5 mm2
Enclosure
Plastic 2-piece housing
Dimensions
85 x 130 x 40 mm (w x h x d).
Protection class
IP30
Environmental
requirements
Operating temperature range 0 to 40oC
Shipping and storage temperature range
-20 to 50oC
Humidity range 0 to 90% rh, noncondensing
Approvals
The XE70 range is CE, RoHs and WEEE
compliant. For regulatory information, DoC
/ CoC D0046 is available on request.
Product must be wired as shown for CE
compliance.
DIMENSIONS
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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 dualdiaphragm 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
T6372C
T6373A
T6373A
T6373B
T6373B
T6373C
1018
1032
1014
1017
1157
1015
1064
1013
Ventilation
2-pipe fan-coil
Application
4-pipe fan-coil
Heatpump
Air-conditioner
Heat or Cool
Heat/cool
Control
Changeover
manual
auto
central
manual
manual
auto
Capability
Fan control (auto or cont)
a or c
a or c
a or c
cont
cont
cont
a or c
cont
Fan speed control
Valve control
Compressor control
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T6372/T6373 FAN -COIL TERMOSTATS 2-PIPE FAN-COIL CONTROL
WIRING
ANTICIPATOR
ANTICIPATOR
ANTICIPATOR
ANTICIPATOR
ANTICIPATOR
ANTICIPATOR
ANTICIPATOR
ANTICIPATOR
HEAT
HEAT
HEAT
HEAT
HEAT/COOL
HEAT/COOL
HEAT/COOL
HEAT/COOL
COOL
COOL
COOL
COOL
CLOSE VALVE
CLOSE VALVE
CLOSE VALVE
CLOSE VALVE
CLOSE
VALVE
CLOSE
VALVE
CLOSE
VALVE
LOAD
VALVE
VALVE
VALVE
VALVE
VALVE
VALVE
VALVE
VALVE
VALVE
FAN
FAN
FAN
FAN
FAN
FAN
FAN
FAN
link 4 & 5 for fan continuous, 3 & 5 for fan automatic (cycled)
N L
230 Vac
WINTER
SUMMER
WINTER
SUMMER
8
7
6
5
4
3
2
1
COOL
HEAT
T6373A1157
I
II
III
FAN
Honeywell Control Systems Limited http://europe.hbc.honeywell.com
Newhouse Industrial Estate
Motherwell ML1 5SB
United Kingdom
xe70-en0r8403-uk07r0515
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