GUIDE SPECIFICATION
63-4373-03
TB6575/TB8575 SuitePRO™
Digital Fan Coil Thermostats
GENERAL
A. OVERVIEW:
The contractor shall furnish, install, and place in operating
condition an HVAC control system described herein. All units
shall be located in accordance with the plans.
B. TYPE OF SYSTEM:
System Requirements and Control Provisions:
The SuitePRO™ Digital Fan Coil Thermostats provide the
following
a. Control for 2-pipe fan coil, 4-pipe fan coil (1H/1C), 2-
pipe with auxiliary heat, heat only, or cool only appli-
cations with 3 speed fan.
b. Line voltage control applications (TB6575A,
TB6575B and TB6575C)
– 120 Vac (±10% at 50/60Hz), 240 Vac (-15% to
+10% at 50/60Hz), and 277 Vac (±10% at 50/60Hz).
c. Low voltage control applications (TB8575A) – 20 to
30 Vac at 50/60Hz.
d. Auto Changeover or Manual Changeover control
(selectable in the Installer Setup).
e. 3 speed fan control (Low, Medium, and High).
f. On/Off heating and cooling relay outputs.
g. Non-programmable user interface with remote
setback input for occupied and unoccupied setpoints
that interfaces with occupancy sensors and time
clocks.
h. Analog pipe sensor or Aquastat® input for 2-pipe
Seasonal Changeover (optional).
i. Remote wall sensor (optional) - 20K Ohm resis-
tance; uses Honeywell TR-21 and TR21A wall sen-
sors).
j. VersaSpeed™ fan ramp algorithm automatically
adjusts fan speed (low, medium, and high) on Auto
fan setting, which incorporates Proportional plus
Integral (P+I) control algorithm for precise tempera-
ture regulation.
k. Independent range stops for both heating and cool-
ing setpoints.
l. Freeze protect algorithm turns on heat when needed
m. Display of room temperature in °C or °F (selectable
in the Installer Setup).
n. Separate cycle rates per hour for heating and cool-
ing modes.
o. Ability to lock out the thermostat keypad (full or par-
tial lockout selectable in the Installer Setup).
p. Pre-wired lead wires on thermostat sub-base for
faster installation (TB6575A, TB6575B and
TB6575C models only).
q. High speed fan startup to ensure sufficient starting
torque.
r. EEPROM permanently retains user settings, includ-
ing setpoints, during power loss (no batteries
required).
s. Energy Saving Options:
(a)Activity Sensing sets back thermostat to
economy mode when there is no activity with
the thermostat (4, 12, or 24 hours selectable).
(b)Remote Setback Inputs receive dry contact
input from a time switch, occupancy sensor, or
hotel card key to set back thermostat to econ-
omy mode.
(c)Auto Fan Reset eliminates the fan from being
run all the time by automatically setting the fan
to auto (2 or 4 hour selectable).
(d)VersaSpeed™ fan ramp algorithm.
(e)Range Stops for heating and cooling.
System Components:
a. TB6575A1000, TB6575B1000, TB6575C1000, and
TB8575A1000 thermostat with sub-base (lead wires
pre-wired to sub-base on TB6575A/B/C models).
b. Wall mount temperature sensors (optional).
c. PS20 (535-34AB08-203) pipe sensor (optional).
d. 50033847-001 adapter plate for mounting on a
vertical 2 x 4 in. single-gang or double-gang NEMA
standard vertical switch box.
C. CODES AND STANDARDS:
The system shall comply with applicable provisions of
ASHRAE 90-75. CSA Certified
C/US for Canada and the U.S.A. Meets the same
requirements as UL-873; FCC Part 15 Class B.
These specifications are based on equipment from Honeywell
to set a standard for design and quality.
D. WIRING:
All wiring shall meet National Electrical Codes and local
electrical codes.
E. TESTING GUARANTEE SERVICE:
— Prior to installation, the contractor shall provide copies of
submittals.
— The contractor is responsible for assuring that conduit and
wire quantity, size, and type are suitable for the equipment
supplied.
— Upon completion, the contractor shall conduct a total
system test for the owner and engineer.
— All components, parts, and assemblies supplied by the
manufacturer shall be guaranteed against defects in
materials and workmanship for 2 years.
— Warranty service shall be performed by the contractor.
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