Honeywell TB6575, TB8575 User Manual

TB6575/TB8575 SuitePRO™

Digital Fan Coil Thermostats

INSTALLATION INSTRUCTIONS

PRODUCT DESCRIPTION

The SuitePRO™ is a family of Digital Fan Coil thermostats for residential and commercial applications such as hotels, condominiums, school classrooms, etc.

Four models are available for your application:

•TB6575A1000: 2-pipe or 4-pipe with seasonal/manual/ automatic heat/cool changeover; 120/240 Vac.

•TB6575B1000: 2-pipe only with seasonal or manual heat/cool changeover; 120/240 Vac.

•TB6575C1000: 2-pipe or 4-pipe with seasonal/manual/ automatic heat/cool changeover; 120/240/277 Vac.

•TB8575A1000: 2-pipe or 4-pipe with seasonal heat/ cool changeover; 24Vac.

All four models are suitable for multiple applications. Changes in output wiring and external links between wiring terminals allow you to configure the thermostat for the appropriate application.

The applications that are available are:

•Heating or Cooling only

•Two pipes: Heat or Cool with Manual Changeover

•Two pipes: Heat or Cool with Seasonal Changeover (requires optional pipe sensor)

•Two pipes: Heat or Cool with Auxiliary Heat and Manual or Seasonal Changeover (requires optional pipe sensor)

•Four pipes: Mixed Manual and Auto Changeover

•Four pipes: Manual Changeover

•Four pipes: Auto Changeover

The fan is controlled from the thermostat. The Low, Medium, High, or Auto fan settings are easily made with a press of a key.

Valves and auxiliary electric heaters can be controlled using a relay or contactor controlled by the system switch.

FEATURES

•Simple, intuitive user interface.

•Pre-installed lead wires for fast installation (TB6575A, TB6575B and TB6575C models only)

•Backlight display permits easy viewing in any light.

•Four buttons allow manual control of system operation, fan speed, and temperature setpoint adjustment.

•Digital display of ambient temperature, setpoint, heating or cooling mode, fan status, and remote setback

•Proportional plus Integral (P+I) control algorithm for precision temperature regulation.

•Single Setpoint and Heat/Cool setpoint methods for 4-pipe auto changeover.

•Adjustable maximum heating and minimum cooling setpoint limits using range stops.

•EEPROM permanently retains user settings, including setpoints, during power loss (no batteries required).

•Selectable °C or °F display via Setup button on thermostat.

•Displayable pipe sensor temperature readout to aid in troubleshooting.

•Selectable to allow the fan motor to always begin on high speed to ensure sufficient torque at startup.

•Option to wire a remote indoor temperature sensor.

•Freeze protect algorithm turns on heat when needed.

•Economy Setback options via dry contact or Activity Sensing

•Advanced fan control with VersaSpeed(TM) fan ramp algorithm and Auto Fan Reset

62-0278-07

TB6575/TB8575 SUITEPRO™ DIGITAL FAN COIL THERMOSTATS

SPECIFICATIONS

Cooling: 22°C to 32°C (72°F to 90°F).

Supply Voltages:

Enclosure: Plastic (cover, sub-base, and optional adap-

tor plate)

TB6575A1000 and TB6575B1000:

• 120 Vac ±10% at 50/60Hz

Junction Box Mounting: Direct mounting on a horizontal

• 240 Vac -15% to +10% at 50/60Hz

single gang NEMA 2 x 4 in. surface mount electrical box,

TB6575C1000:

or on 4 x 4 in. box or vertical 2 x 4 in. surface mount

• 120/240/277 Vac ±10% at 50/60Hz

electrical box with the optional 50033847-001 adapter

TB8575A1000:

plate.

• 20 to 30 Vac at 50/60Hz (using 24 Vac, Class 2,

NEMA rated transformer)

Dimensions: See Fig. 1 on page 3.

Safety Fuse: TB6575A1000 and TB6575B1000 use 15A

Wiring: 11 screw-in terminals located on the sub-base

250 Vac fuse. TB6575C1000 uses a 15A 350 Vac fuse.

If the safety fuse blows, the thermostat must be

capable of accepting up to 2 x 18 AWG (0.8 sq. mm), 1 x

replaced. The fuse is not field replaceable.

16 AWG (1.3 sq. mm), or 1 x 14 AWG (2.1 sq. mm) wires.

Electrical Ratings: (see Table 1).

Accepts stranded or unstranded 14-28 gauge wire.

NOTES:

Table 1. Electrical Ratings.

1. The TB6575A1000 and TB6575C1000 models

are pre-fitted with color-coded fly leads (16

Amps (inductive) for:

AWG) attached to seven terminals.

Component

24 Vac

120 Vac

240 Vac

277 Vac

2.

The TB6575B1000 model is pre-fitted with color-

coded fly leads (16 AWG) attached to six

Fan Relay

1.0 A

6.0 A

3.0 A

2.4 A

terminals.

Heat/Cool Relay

1.0 A

1.0 A

1.0 A

1.0 A

3.

The TB8575A1000 model does not have fly

Environmental Ratings:

leads attached to any terminals.

4.

See Table 3 on page 5 for fly lead usage.

Temperature:

Minimum Operational Life (at maximum load):

Operating Range: 18°C to 49°C (0°F to 120°F).

Shipping and Storage Range: -29°C to 49°C (-20°F to

Thermostat contacts: 100,000 cycles

120°F).

Approvals:

Humidity: 5% to 90% RH, non-condensing.

Onboard Temperature Sensor:

CSA Certified C/US for Canada and the U.S.A. Meets

the same requirements as UL-873.

Type: 10K NTC

FCC Part 15 Class B

Working Range: 18°C to 49°C (0°F to 120°F)

Accessories:

Display Range: 0°C to 37°C (32°F to 99°F)

Accuracy ±2.0°F at 70°F

• 50033847-001 – Adapter plate for mounting on a

Remote Temperature Sensor (optional):

vertical 2 x 4 in. single-gang or double-gang NEMA

standard vertical switch box (6 1/4 in. (158 mm) x 5 1/

Type: 20K NTC

16 in. (128 mm) x 13/22 in. (10 mm)).

Working Range: 18°C to 49°C (0°F to 120°F)

• TR21 – 20K Ohm NTC Non-Linear Remote

Display Range: 0°C to 37°C (32°F to 99°F)

temperature sensor.

Accuracy ±2.0°F at 70°F

Other acceptable remote temperature sensors are —

Remote Pipe Sensor (optional):

• 20K Ohm: C7041B2005, C7041B2013, C7041C2003,

Type: 20K NTC

C7041P2004, C7770A1006, C7772A1004, and

C7772A1012

Working Range: 0°C to 93°C (32°F to 199°F)

• 10K Ohm (for averaging only): TR21-A

Display Range: 0°C to 93°C (32°F to 199°F)

• PS20 – Remote pipe sensor (20K Ohm)

Accuracy ±5.0°F over the temperature sensing range

Remote Setback Input: Dry contact, maximum

• W6380B1005 – Fan Coil Unit Relay Control Center

• WSK-24 - Wireless Occupancy Solution (Receiver,

resistance of 100 ohms. TB6575 – 9Vdc, < 4 mA; TB8575

occupancy sensor and door sensor)

– 16 Vdc, < 5 mA. Note Electrical WARNING on page 3.

Models, applications, and features:

Remote Setback Range:

Heating: 10°C to 21°C (50°F to 70°F).

Table 2 identifies the applications and features of each model.

Table 2. Applications and Features

Applications

Features

Heat/Cool/

Pipes

Voltage

Number

Energy

Fan: On,

Manual/

Remote

Back

Pipe

Models

Auto

of Relaysa

Savings

Auto, or 3

Auto

Sensor

Light

Sensorb

Input

speed

Changeover

TB6575A1000

All

2 or 4

120 or

5

240 Vac

Yes

Yes

Yes

Yes

Yes

Yes

TB6575B1000

Heat or

2

120 or

4

Cool

240 Vac

TB6575C1000

All

2 or 4

120/240/

5

277 Vac

TB8575A1000

All

2 or 4

24 Vac

5

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2

TB6575/TB8575 SUITEPRO™ DIGITAL FAN COIL THERMOSTATS

aThe five relays are wired via terminals W, Y, Gh, Gm, and Gl. Relay 1 controls Heat open (W) or Cool open (Y). Relay 2 controls Cool open or Electrical heater output (Y/A). Relays 3, 4, and 5 control the High, Medium, and Low fan speeds respectively (Gh, Gm, and Gl).

NOTE: In 2-pipe configurations without Auxiliary Heat, only 4 relays are used; relay 2 (Y/A) is not used.

bPipe sensor is required for 2 pipe auto changeover and 2 pipe auxiliary heat applications.

3-13/16

(97)

5-13/16 (148)	1-1/8
	(29)

IMPORTANT

Do not mount the device where it can be affected by:

1. Drafts or dead spots behind doors or in corners. 2. Hot or cold air from ducts.

3. Radiant heat from the sun or appliances.

4. Unheated (uncooled) areas such as an outside wall behind the thermostat.

5. Concealed pipes or chimneys.

Mounting and Wiring

THERMOSTAT		1-3/16
SUB-BASE
	3-1/4 (83)	(30)
5/32
(4)
5/32	UP	1-3/4
(4)
		(44)
	2-3/8 (60)	M27589

Fig. 1. Dimensions in inches (mm).

CAUTION

Equipment damage hazard.

Operation at low temperatures can cause fan coil damage.

This thermostat is not a safety device. Do not use it where the space temperature is outside of the device operating range.

A display of two dashes, – –, for the Room Temp display indicates a sensor failure or a temperature outside of the thermostat operating range of 18°C to 49°C (0°F to 120°F). With – – displayed, the thermostat ceases to operate. When the temperature returns to within its operating limits, the thermostat returns to operation.

INSTALLATION

The optional freeze protect feature should be used if low temperatures can occur.

When Installing this Product…

1.Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2.Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

3.Installer must be a trained and experienced service technician.

WARNING

Risk of electrical shock.

Can cause severe injury, property damage or death.

Disconnect power supply before installation and before servicing.

IMPORTANT

The thermostats are line voltage powered devices. All wiring must comply with national and local electrical codes, ordinances and regulations. Provide disconnect means and overload protection, as required.

The TB8575A1000 thermostat must be powered by an Approved 24 Vac, Class 2, NEMA rated transformer (such as a W6380 Relay Control Center).

Location

The thermostats are the temperature control element in a fan coil or air-conditioning system. They must be located about 1.5m (5 ft.) above the floor, in a position with good air circulation, to sense room temperature.

The thermostat must be mounted flush to the wall. The thermostat can be mounted directly to a 2 x 4 in. horizontal junction box (see Fig. 2 on page 4). An optional adaptor plate (50033847-001) can be used with a 4 x 4 in. or a vertical junction box for which mounting screws are supplied (see Fig. 3 on page 4).

1.Prepare the supply wires:

a.Mounting on a 4 x 4 in. or vertical 2 x 4 in. junction box:

(1)Feed the supply wires through the junction box and the opening in the adaptor plate.

(2)Affix the adaptor plate to the junction box using the screws provided.

b.Mounting on a horizontal 2 x 4 in. junction box: Feed the supply wires through the opening of the junction box.

2.Attach the supply wires:

a.For the TB6575A1000, TB6575B1000 and TB6575C1000 models:

(1)Push the fly lead wires through the wiring access hole in the sub-base.

(2)Attach the fly lead wires to the supply wires using wire nuts (not provided).See Table 3 on page 5 for terminal and lead identification.

(3)Push the fly lead and supply wires back into the junction box.

b.For the TB8575A1000 model (which does not have pre-wired fly leads):

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TB6575/TB8575 SUITEPRO™ DIGITAL FAN COIL THERMOSTATS

(1)Attach the supply wires directly to the terminals on the sub-base. See Table 3 on page 5 for terminal identification.

(2)Push the supply wires back into the junction box.

3.Mount the sub-base:

a.Mounting on a 4 x 4 in. or vertical 2 x 4 in. junction box:

Align the two holes at the top edges of the subbase with the two pins on the adaptor plate. Attach the sub-base to the adaptor plate using the screws provided.

b. Mounting on a horizontal 2 x 4 in. junction box:

Attach the sub-base to the junction box using the screws provided.

4.Thoroughly check the wiring to the sub-base before finally mounting the thermostat on the wall.

5.Center the thermostat body over the sub-base, and press down firmly to engage the four tabs on the sub-base and snap the thermostat body into place.

6.Use the provided safety screw to secure the thermostat main body to the sub-base.

7.If using the adaptor plate, press the adaptor plate screw cover into place.

SUBBASE

MOUNT SUBBASE TO

HORIZONTAL 2X4

JUNCTION BOX USING

TWO SCREWS

SNAP MAIN BODY

ONTO SUBBASE

INSERT SCREW TO LOCK
MAIN BODY TO SUBBASE	M27590

Fig. 2. Mounting sub-base and thermostat to 2 x 4 in. junction box.

ADAPTOR

PLATE

ADAPTOR PLATE SCREW HEAD COVER

MOUNT ADAPTOR PLATE ONTO 4X4 WIRING BOX OR 2X4 VERTICAL JUNCTION BOX USING TWO SCREWS

SUB-BASE

MOUNT SUB-BASE

ONTO WALL PLATE

USING TWO SCREWS

		INSERT SCREW
	SNAP MAIN BODY	TO LOCK MAIN
		BODY TO
	ONTO SUB-BASE
		SUB-BASE

NOTE: MIDDLE HOLES OF ADAPTOR PLATE ARE USED FOR MOUNTING
TO A 2X4 VERTICAL JUNCTION BOX. USE OUTER HOLES FOR
MOUNTING TO A 4X4 WIRING BOX.	M27591

Fig. 3. Mounting sub-base and thermostat using the adaptor plate (50033847-001).

Terminal Wiring

Table 3 provides the terminal wiring for each model and application.

NOTE: The TB6575A1000, TB6575B1000 and TB6575C1000 models have color coded fly leads attached to the terminals. Refer to Table 3 for the color codes.

The Terminal Identifiers in Table 3 have the following meaning:

•C: Common 24 Vac

•Gh: High speed fan relay

•Gl: Low speed fan relay

•Gm: Medium speed fan relay

•L: Line voltage power (120/240/277 Vac)

•N: Line voltage ground (120/240/277 Vac)

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4

•Ps: Pipe sensor (optional)

•R: 24 Vac power

•Rs: Remote sensor (optional)

•SB: Remote setback (optional)

TB6575/TB8575 SUITEPRO™ DIGITAL FAN COIL THERMOSTATS

•Sc: Ground (required if remote sensor, pipe sensor, and/or remote setback are connected)

•W/Y: W = Heating; Y = Cooling (2 pipe only)

•Y/A: Y = Cooling; A = Electrical heater output

Table 3. Terminal Wiring.

Terminals

Model

Application

1

2

3

4

5

6

7

8

9

10

11

TB6575A1000 — 120/240 Vac

TB6575C1000 — 120/240/277 Vac

Terminal Identifier

L

W/Y

Y/A

Gl

Gm

Gh

N

Rsa

Scb

SBc

Psd

Fly lead wire color

Black

Orange

Yellow

Red

Blue

Brown

White

Nonee

2 pipes; Heat only

f

W









Og

Rh

O

2 pipes; Cool only



Y









O

R

O

2 pipes; Heat or Cool with Manual Changeover



W/Y









O

R

O

2 pipes; Heat or Cool with Seasonal Changeover



W/Y









O

R

O



4 pipes; Heat and Cool with Manual Changeover



W

Y









O

R

O

4 pipes; Heat and Cool with Auto Changeover



W

Y









O

R

O

2 pipes; Heat or Cool with Auxiliary Heat



W/Y

A









O

R

O



4 pipes; Heat and Cool with Manual Changeover or



W

Y









O

R

O

Auto Changeover

TB6575B1000 — 120/240 Vac

Terminal Identifier

L

W/Y

n/ai

Gl

Gm

Gh

N

Rsa

Scb

SBc

Psd

Fly lead wire color

Black

Orange

Red

Blue

Brown

White

Nonee

2 pipes; Heat only



W









O

R

O

2 pipes; Cool only



Y









O

R

O

2 pipes; Heat or Cool with Manual Changeover



W/Y









O

R

O

2 pipes; Heat or Cool with Seasonal Changeover



W/Y









O

R

O



TB8575A1000 — 24 Vac

Terminal Identifierj

R

W/Y

Y/A

Gl

Gm

Gh

C

Rsa

Scb

SBc

Psd

2 pipes; Heat only



W









O

R

O

2 pipes; Cool only



Y









O

R

O

2 pipes; Heat or Cool with Manual Changeover



W/Y









O

R

O

2 pipes; Heat or Cool with Seasonal Changeover



W/Y









O

R

O



4 pipes; Heat and Cool with Manual Changeover



W

Y









O

R

O

4 pipes; Heat and Cool with Auto Changeover



W

Y









O

R

O

2 pipes; Heat or Cool with Auxiliary Heat



W/Y

A









O

R

O



4 pipes; Heat and Cool with Manual Changeover or



W

Y









O

R

O

Auto Changeover

aRs; Remote sensor is optional.

bRequired when Rs, SB, or Ps is wired.

cSB; Remote setback is optional.

dPipe sensor: Discrete, Analog, or Aquastat®.

eThese terminals (8, 9, 10, and 11) do not have lead wires attached to them.

fA check mark () indicates the terminal is used in that application. Rs and SB terminal connections are optional. If a terminal is left blank, it is not used in that application.

gO = Optional

hR = Required if Rs, SB, or Ps is wired.

iTerminal 3 is not used on the TB6575B1000 model.

jThe TB8575A1000 model does not have fly lead wires attached to any terminals.

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TB6575/TB8575 SUITEPRO™ DIGITAL FAN COIL THERMOSTATS

Accessory Wiring

Remote Pipe Sensor Wiring

The remote pipe sensor is used for 2 pipes auto and 2 pipes heat and cool with auxiliary heat changeover. The pipe sensor will sense the temperature in the pipes to tell the thermostat when the system is set for Heat or Cool.

1.Check Installer Setup Number (ISU) 5 to ensure it is set to the desired value. (See Table 4 on page 11).

2.Wire pipe sensor to Sc and Ps terminals.

3.Attach pipe sensor to the pipe.

4.Insulate pipe sensor, as necessary.

5.Change pipe sensor thresholds for cooling or heating by setting Installer Setup Numbers (ISU) 6 and 7 to desired values.

Remote Temperature Sensor Wiring

The TR21 is an optional remote temperature sensor that can be used as an alternative to the internal sensor. In addition to the TR21, other Honeywell sensors that use a 20k Ohm curve may be used as the remote sensor.

WARNING

Risk of electrical shock.

Can cause severe injury, property damage or death.

Disconnect power supply before servicing.

CAUTION

Erratic system operation hazard.

Failure to follow proper wiring practices can introduce disruptive electrical interference (noise).

Keep wiring at least one foot away from large inductive loads such as motors line starters, lighting ballasts, and large power distribution panels. Shielded cable is required in installations where these guidelines cannot be met. Ground shield only to grounded controller case.

IMPORTANT

All wiring must comply with local electrical codes and ordinances or as specified on installation wiring diagrams.

—Wall module wiring can be sized from 16 to 22 AWG (1.31 to 0.33 sq. mm) depending on the application.

—The maximum length of wire from the thermostat to a wall module is 1000 ft. (305 m).

—Twisted pair wire is recommended for wire runs longer than 100 ft. (30.5 m).

1.Check Installer Setup Number (ISU) 4 to ensure it is set to use the remote sensor. (See Table 4 on page 11).

2.Wire sensor to Rs and Sc thermostat terminals.

3.Push excess wire back into the hole. Plug the hole using non-hardening caulk, putty or insulation to prevent drafts from affecting performance.

4.Remove sensor cover.

5.Mount sensor to the wall or junction box using the screws and anchors provided.

6.Level the sensor for appearance only. Device functions correctly even when not level.

7.Replace sensor cover.

NOTE: For complete wiring instructions, please follow the installation instructions provided with the remote sensor.

Sensor Wiring for Temperature Averaging

Fig. 4–Fig. 6 illustrate sensor wiring for temperature averaging applications.

	SUBBASE
	Rs	Sc
TR21		TR21
T	T	T	T
TR21		TR21
T	T	T	T

M27559

Fig. 4. Wiring four TR21 (20K ohm) sensors.

	SUBBASE
	Rs	Sc
T4	T3	T4	T3
	1		1
	TR21-A		TR21-A

1 THE TR21-A IS A 10K OHM SENSOR.

M27560

Fig. 5. Wiring two TR21-A (10K ohm) sensors to provide a temperature averaging network.

	SUBBASE
	Rs	Sc
TR21
T	T	T4	T3
			1
			TR21-A
TR21
T	T

1 THE TR21-A IS A 10K OHM SENSOR.	M27561

Fig. 6. Wiring two TR21 (20K ohm) sensors and one TR21-A (10K ohm) sensor to provide

a temperature averaging network.

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6