Honeywell T6570 Series User manual

Hydronic Controls
New T6570 Series
Digital Fan Coil Thermostats
T6570 Digital Fan-Coil thermostats
provide line voltage on/off control for
fans, valves, compressors or auxiliary
electric heaters in fan-coil and small air-
conditioner applications.
Models are available for control of
various fan-coil units, such as:
– 2-pipe.
– 2-pipe with manual heat/cool
changeover.
– 2-pipe with auxiliary electric heater.
– 4-pipe with manual heat/cool
changeover.
– 4-pipe with automatic heat/cool
changeover.
– Single stage air conditioning
Changes in output wiring and external
links between wiring terminals configure
the thermostat for the appropriate
application.
The fan is also controlled from the
thermostat. With most models there is a
choice of running the fan continuously,
or cycling it with the thermostat.
The OFF-ON switch turns both the fan
and system off.
Compressors and auxiliary electric
heaters can be controlled using a relay or
contactor switched by the thermostat.
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Key features:
• Simple user interface.
• Pushbutton setpoint adjustment.
• Digital display of ambient temperature
• Digital display of mode icons when
cooling or heating relays operate, or
when energy savings mode is active.
• Switches for selection of system opera-
tion and fan speed.
• Proportional plus integral (P+I) control
algorithm for precision temperature reg-
ulation.
• Direct mounting onto wall or standard
junction box or vertical junction box
with optional adapter plate.
• Energy savings mode input from time
switch, occupancy sensors or hotel card-
key. Overrides comfort setpoint with set-
back heating or cooling setpoint.
• Installer setup mode for
changing operating parameters.
• Selectable ˚C or ˚F display.
• LCD display of setpoint only or ambient
temperature plus setpoint.
• Adjustable deadband (auto changeover
models) for heat and cool control.
• Energy savings input configurable,
normally open or normally closed.
• Selectable energy saving setup cooling
and setback heating setpoints.
• Adjustable maximum heating and
minimum cooling setpoint limits.
• Adjustable minimum relay off-times
(heating or cooling) for compressor
short-cycle protection.
• EEPROM memory retention
(no batteries required).
• Custom logo option.

Comfort, Energy and Health Solutions
Honeywell Inc. Honeywell Limited
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422-3992 Toronto, ON M1V 4Z9
Return Service Requested
Presorted Standard
US Postage
PAID
Minneapolis, MN
Permit #40
New T6570 Series
Digital Fan Coil
Thermostats
Setpoint Range: 50˚F to 90˚F (10˚C to 30˚C).
Supply Voltages: 24,120, 230, 277 Vac (+10/-15%), 50/60 Hz.
(depending on model selected).
Ambient Ratings:
Temperature:
Operating Range: 5˚C to 45˚C (41˚F to 113˚F).
Shipping and Storage Range: -20˚C to 55˚C
(-4˚F to 131˚F).
Humidity Range: 5 to 95% RH, non-condensing
at 26˚C (79˚F).
Thermostat Output: 1 SPDT or 2 SPST relays (depending
on model).
Approvals: CSA C/US Certified LR163752.
Electrical Rating: T8570 T6570 Series
50-60 Hz 24V 120V 230V 1 277V
Amps 3.0 3.8 3.8 3.8
Full Load Inductive2 3.0 3.0 3.0 3.0
Pilot Duty 100 VA
1This thermostat is approved for use on power supply with line and neutral only.
2Equivalent to NEMA 1/8 horsepower rating; allowable load must be determined by
adding nameplate full load and locked rotor rating of all loads.
Accessory: Optional Adapter plate part #272878 for vertical
juction box mounting.
Models1 Applications Features Switches
2-Pipe
Fan Coil 4-Pipe Fan Coil Number of Relays Energy Savings
Input
Deadband
Adjust On/Off (SPST) 3-Speed Fan
(SP3T)
Fan
On/Auto Heat/Cool Changeover
T6574B,T8574B •2 – 1 SPDT • – • • • Remote2
T6575B,T8575B • – 2 SPST • – • • – Manual
– • 2 SPST • – • • – Manual
T6575C,T8575B – • 2 SPST • • • • – Auto
1 T8570 series O.S. numbers are 24 V; T6570 series O.S. numbers are line voltage. Installation – Optional adapter plate 272878
2 Heating-only, cooling-only, or heat-cool with remote pipe thermostat.
Optional
adapter plate
M12081A
3-11/16
(94)
4-3/16 (122) 1-7/16 (37)
1-1/2
(38)
3-5/16 (84) 2-3/8 (60)
Nominal dimensions in inches (mm)
M17505
part
#272878
NOTE:
snap out screw-head
cover before securing
adapter plate
Secure
adapter
plate
to box
1.
2.
3.
Attach
thermostat
subbase
Place cover
4.
6A1520 7/00 RAJ Printed in the USA Printed on recycled paper containing 40%
© Honeywell 2000 All rights reserved preconsumer waste and 10% postconsumer waste.
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