Instruction manual

ManualsBrandsBryant ManualsConsumer electronicsII TSTAT-0-16

NOTE: Read the entire instruction manual before starting the

installation.

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INDEX

Page

SAFETY CONSIDERATIONS.....................................................1

INTRODUCTION..........................................................................1

INSTALLATION CONSIDERATIONS.......................................1

INSTALLATION........................................................................1-7

Thermidistat Control Location..............................................1-2

Set DIP Switches ......................................................................2

Install Thermidistat Control ..................................................2-3

Set Thermidistat Control Configuration ...............................3-6

System Start-Up and Checkout.............................................6-7

Final Settings ............................................................................7

HUMIDITY CONTROL FEATURES.....................................7-10

Humidification.......................................................................7-8

Dehumidification ...................................................................8-9

Vacation...............................................................................9-10

OPERATIONAL INFORMATION........................................10-19

WIRING DIAGRAMS ...........................................................11-19

THERMIDISTAT CONTROL TROUBLESHOOTING ............19

SAFETY CONSIDERATIONS

Read and follow manufacturer instructions carefully. Follow all

local electrical codes during installation. All wiring must conform

to local and national electrical codes. Improper wiring or installa-

tion may damage Thermidistat Control.

Recognize safety information. This is the safety-alert symbol

When you see this symbol on the equipment and in the instruction

manual, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAU-

TION. These words are used with the safety-alert symbol. DAN-

GER identifies the most serious hazards which will result in severe

personal injury or death. WARNING signifies a hazard which

could result in personal injury or death. CAUTION is used to

identify unsafe practices which would result in minor personal

injury or product and property damage.

INTRODUCTION

Bryant’s 7-day programmable Thermidistat Control is a wall-

mounted, low-voltage control which combines temperature and

humidity control in a single attractive unit. An extension of

Bryant’s proven line of thermostats, it provides separate set points

for heating and cooling, and now adds humidification and dehu-

midification. Different heating and cooling set points and times are

programmable for 4 periods per day and 7 days per week. The

Thermidistat Control can also be field-configured as a non-

programmable thermostat. When operating in the non-

programmable configuration it will still have both temperature and

humidity control. Humidify and dehumidify outputs provide direct

control of humidity. Batteries are not used. During power loss an

internal memory stores programs and settings for unlimited time,

and the clock continues to run for at least 8 hr.

INSTALLATION CONSIDERATIONS

A. Power

Note that this control does not require batteries and is not "power

stealing." It does require 24vac (R and C terminals) of the

low-voltage transformer to be connected to it for proper operation.

It will not operate without these 2 connections.

B. Models

There is a single programmable/non-programmable model for all

applications. It can be configured for AC or HP, 1- or 2-speed

compressor, and for dual fuel installations, allowing it to be used

in place of all Bryant thermostats.

C. Humidify Equipment and Connections

The humidify output connects directly to 24vac operated humidi-

fiers. No other connection or interlock is required. Any of several

installer-selectable operating modes are available.

D. Dehumidify Equipment and Connections

The dehumidify output connects to the dehumidify input on

variable-speed furnaces and fan coils. Additional dehumidification

is done by controlling the compressor. A variety of operating

modes are available.

E. Outdoor Temperature Sensor

Optimum performance is obtained when an outdoor temperature

sensor is used with the Thermidistat Control. Plan installation so

that 2 wires can be run from Thermidistat Control to an outdoor

location, preferably on the north side of the house or refer to

Installation Instructions included with the outdoor temperature

sensor for simplified connection. Sensor can be mounted to

outdoor unit and existing control wires may be used for its

connection. Details are provided in sensor instructions.

INSTALLATION

I. THERMIDISTAT CONTROL LOCATION

Thermidistat Control should be mounted:

• Approximately 5 ft (1.5m) from floor.

• Close to or in a frequently used room, preferably on an inside

partitioning wall.

Fig. 1—Thermidistat Control

HEIGHT (IN.) WIDTH (IN.) DEPTH (IN.)

4-1/4 7-1/2 1-3/8

A96373

installation and

start-up instructions

THERMIDISTAT™ CONTROL

Cancels: II TSTAT-0-16 II TSTAT-0-20

5-98

TSTAT

—1—

→

Summary of content (20 pages)

PAGE 1
installation and start-up instructions TSTAT THERMIDISTAT™ CONTROL Cancels: NOTE: Read the entire instruction manual before starting the installation. II TSTAT-0-16 II TSTAT-0-20 5-98 INSTALLATION CONSIDERATIONS A. Power Note that this control does not require batteries and is not "power stealing." It does require 24vac (R and C terminals) of the low-voltage transformer to be connected to it for proper operation. It will not operate without these 2 connections.
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• III. On a section of wall without pipes or duct work. Thermidistat Control should NOT be mounted: • Close to a window, on an outside wall, or next to a door leading to the outside. • Exposed to direct light and heat from a lamp, sun, fireplace, or other temperature-radiating object which may cause a false reading. • Close to or in direct airflow from supply registers and return-air registers. • II.
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5. dF—for 1-speed dual fuel D. 6. d2—for 2-speed dual fuel OPTION 1—ANTICIPATOR ADJUSTMENT 7. HS—for special 3-stage auxiliary heat with FK series Fan Coil and 1-speed heat pump This adjustment controls sensitivity and cycle rate of Thermidistat Control. Higher numbers decrease sensitivity and slow cycle rate. Lower numbers increase sensitivity and cycle rate. However, a limiting feature will not allow more than 4 cycles per hr, regardless of setting. Anticipator values can range from 1 to 9.
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OPTION 4—FAN (G) ON WITH W 1. Enter configuration mode if not already there. See Step 4 "To Enter Configuration Mode." Use up and down buttons to make small (now flashing) display indicate 07. This selection determines whether fan (G) output is to be ON or OFF when any W (furnace or strip heat) output is ON. Most furnaces and fan coils manage their own blowers and do not require separate G signal. For these applications, select OFF. Some auxiliary heaters require separate G signal to turn on blower.
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TABLE 1—W1 / W2 OUTPUTS High Pressure Switch Kit includes required switch and instructions for proper operation. For all dual fuel installations, outdoor temperature sensor must be attached. If not, E3 error message will appear. See "Error Codes." This option requires prior selection of heat pump (DIP switch 1—ON), and must be selected in dual fuel installations. It prevents simultaneous operation of both furnace and heat pump, and prevents direct transition from heat pump to furnace operation.
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OPTION 14—HEAT/COOL DEAD BAND ADJUSTMENT Both programmable and non-programmable versions of the Homeowner’s Manual are available. This option selects the minimum difference between heat and cool set points. A larger difference saves energy and a smaller difference decreases temperature difference between heating and cooling. Factory default is 2, which means cooling set point must be a minimum of 2° above heating set point.
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COPY PREVIOUS DAY PROGRAM MODE SET COOL 1 4 7 1 CHANGE DAY HUMIDITY FAN SET HEAT 2 5 8 2 5 8 SET TIME/TEMP VACATION HOLD/END SET TIME VACATION END 3 6 9 3 6 Reset Filter PROGRAMMABLE CONFIGURATION (OPTION 17 OFF) SET DHUM MODE 4 7 SET HUM FAN Reset Filter 9 NON-PROGRAMMABLE CONFIGURATION (OPTION 17 ON) A98286 → Fig. 2—Programmable/Non-Programmable Keypad Labels B. To Test Cooling and Dehumidification: Press MODE button until COOL icon turns on.
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TABLE 2—EQUIPMENT OUTPUTS Cool—0 to 2 minutes Cool—2 to 4 minutes Heat—0 to 2 minutes Heat—2 to 4 minutes Eheat—0 to 2 minutes Eheat—2 to 4 minutes 1-SPEED AC Y, G Y, G W1 W1, W2 ----- 2-SPEED AC Y1, G Y1, Y2, G W1 W1, W2 ----- 1-SPEED HP Y, G, O Y, G, O Y, G Y, G W1 W1, W2† 2-SPEED HP Y1, G, O Y1, Y2, G, O Y1, G Y1, Y2, G W1 W1* * Two-stage heat not available NOTE: For Y—use terminal Y/Y2, for Y1—use terminal Y1/W2, for W2—use terminal O/W2, for O—use terminal O/W2, for W1—use terminal W/W1, for W2†,
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TABLE 5—DEHUMIDIFICATION SELECTIONS SELECTION MODE DISPLAY FAN DISPLAY Normal Dehumidify Cool to Dehumidify Dehumidify OFF Blank COOL Blank Blank Blank Blank 3. Dehumidify Off DEHUMIDIFY SP DISPLAY DSP Value DSP Value OF has come about from historical use of a standard humidistat to do dehumidification. The humidistat contacts open on high humidity, thus removing a 24-vac signal to initiate dehumidification.
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→ TABLE 6—WIRING DIAGRAM REFERENCE CHART EQUIPMENT SELECTION Typical Fan Coil FK4C Fan Coil 1-Stage Furnace 2-Stage Furnace Variable-Speed 2-Stage Non-Condensing Furnace Variable-Speed 2-Stage Condensing Furnace Without DE Connection Variable-Speed 2-Stage Condensing Furnace With DE Connection SINGLE-SPEED AIR CONDITIONER Fig. 3 Fig. 7 Fig. 11 Fig. 15 TWO-SPEED AIR CONDITIONER Fig. 4 Fig. 8 Fig. 12 Fig. 16 SINGLE-SPEED HEAT PUMP Fig. 5 Fig. 9 Fig. 13 Fig. 17 TWO-SPEED HEAT PUMP Fig. 6 Fig. 10 Fig.
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THERMIDISTAT HEAT STAGE 2 O/W2 TYPICAL FAN COIL E N/A Y1/W2 W3 HEAT STAGE 1 W/W1 W2 Y/Y2 Y FAN G G 24 VAC HOT R R 24 VAC COMM C C COOL STAGE 1 1-SPEED AIR CONDITIONER N/A OUTDOOR SENSOR CONNECTION HUM Y C COOL STAGE 1 Y1/W2 E HEAT STAGE 2 O/W2 W3 HEAT STAGE 1 W/W1 W2 2-SPEED AIR CONDITIONER Y1 Y/Y2 Y FAN G G 24 VAC HOT R R R 24 VAC COMM C C C Y2 N/A DHUM HUMIDIFIER (24 VAC) HUMIDIFY HUM B S1 TYPICAL FAN COIL COOL STAGE 2 N/A DHUM HUMIDIFY THERMIDISTAT OUTD
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THERMIDISTAT FK SERIES FAN COIL 1-SPEED AIR CONDITIONER FK SERIES FAN COIL THERMIDISTAT HEAT STAGE 2 O/W2 W2 N/A Y1/W2 Y1 HEAT STAGE 1 W/W1 W1 Y/Y2 Y/Y2 FAN G G 24 VAC HOT R R COOL STAGE 1 O DEHUMIDIFY DHUM 24 VAC COMM HUMIDIFY C HUM N/A B OUTDOOR SENSOR CONNECTION S1 REMOVE J2 JUMPER FOR HEAT STAGING DH Y HEAT STAGE 2 O/W2 W2 HEAT STAGE 1 W/W1 W1 COOL STAGE 1 Y1/W2 Y1 Y1 Y/Y2 Y/Y2 Y2 FAN G G 24 VAC HOT R R COOL STAGE 2 REMOVE J1 JUMPER FOR DEHUMIDIFY MODES C O
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THERMIDISTAT 1-STAGE FURNACE 1-SPEED AIR CONDITIONER W Y/Y2 Y FAN G G 24 VAC HOT R R C C HUM N/A B OUTDOOR SENSOR CONNECTION S1 HEAT STAGE 1 W/W1 W Y/Y2 Y FAN G G 24 VAC HOT R R R 24 VAC COMM C C C COOL STAGE 2 Y C HUMIDIFY HUM HUMIDIFIER (24 VAC) OUTDOOR SENSOR S2 N/A B OUTDOOR SENSOR CONNECTION S1 HUMIDIFIER (24 VAC) OUTDOOR SENSOR S2 See notes 13 and 16 See notes 13 and 15 A97391 Fig.
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THERMIDISTAT HEAT STAGE 2 O/ W2 2-STAGE FURNACE 1-SPEED AIR CONDITIONER W2 N/A Y1/W2 HEAT STAGE 1 W/W1 2-STAGE FURNACE THERMIDISTAT W/W1 Y HEAT STAGE 2 O/W2 COOL STAGE 1 Y1/W2 HEAT STAGE 1 W/W1 W/W1 COOL STAGE 2 Y/Y2 Y/Y2 2-SPEED AIR CONDITIONER W2 Y1 Y2 Y/Y2 Y/Y2 FAN G G FAN G G 24 VAC HOT R R 24 VAC HOT R R R 24 VAC COMM C C 24 VAC COMM C C C COOL STAGE 1 N/A HUMIDIFY N/A OUTDOOR SENSOR CONNECTION C DHUM HUM N/A HUMIDIFIER (24 VAC) HUMIDIFY B S1 DHUM N/
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VARIABLE SPEED 80% NON-CONDENSING FURNACE AFS BOARD O Y1 AFS BOARD O 1-SPEED AIR CONDITIONER FURNACE BOARD THERMIDISTAT VARIABLE SPEED 80% NON-CONDENSING FURNACE HEAT STAGE 2 O/W2 N/A Y1/W2 HEAT STAGE 1 W/ W1 W/W1 COOL STAGE 1 Y/ Y2 Y/Y2 FAN G G 24 VAC HOT R R 24 VAC COM C COM Y1 THERMIDISTAT W2 Y C COOL STAGE 1 Y1/W2 HEAT STAGE 2 O/W2 W2 HEAT STAGE 1 W/W1 W/W1 COOL STAGE 2 Y/Y2 Y/Y2 FAN G G 24 VAC HOT R R R 24 VAC COM C COM C DEHUMIDIFY DHUM HUM DEHUMI
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THERMIDISTAT VARIABLE-SPEED 1-SPEED CONDENSING AIR CONDITIONER FURNACE VARIABLE-SPEED 2-SPEED CONDENSING AIR CONDITIONER FURNACE THERMIDISTAT HEAT STAGE 2 O/W2 HEAT STAGE 2 O/W2 N/A Y1/W2 HEAT STAGE 1 W/ W1 W/W1 COOL STAGE 1 Y/Y2 Y/Y2 FAN G G 24 VAC HOT R R W2 W2 Y1 COOL STAGE 1 Y1/W2 HEAT STAGE 1 W/W1 Y/Y2 Y/Y2 FAN G G 24 VAC HOT R R R DH C C COOL STAGE 2 DHUM C C HUM DEHUMIDIFY DHUM C 24 VAC COMM 24 VAC COMM HUMIDIFY HUMIDIFY HUM N/A B OUTDOOR SENSOR CONNECTION
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VARIABLE-SPEED CONDENSING FURNACE THERMIDISTAT HEAT STAGE 2 O/W2 W2 HEAT STAGE 2 O/W2 1-SPEED AIR CONDITIONER W/W1 Y/Y2 Y/Y2 FAN G G 24 VAC HOT R R COOL STAGE 1 W2 Y Y/Y2 Y/Y2 FAN G G 24 VAC HOT R R COOL STAGE 2 DEHUMIDIFY DHUM DE NOTE 18 24 VAC COMM COM C C N/A OUTDOOR SENSOR CONNECTION DEHUM HUMIDIFY OUTDOOR SENSOR S2 HUMIDIFIER (24 VAC) HUM N/A B OUTDOOR SENSOR CONNECTION S1 OUTDOOR SENSOR S2 See notes 6, 10, 11, 13, 15, and 18 See notes 6, 10, 11, 13, 16, and
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WIRING DIAGRAM NOTES 1. Refer to Fan Coil Installation Instructions for features and additional wiring information 2. To activate dehumidify function on FK series, remove J1 jumper at fan coil control board. 3. Heat pump must have a high pressure switch for dual fuel applications. 4. Refer to outdoor equipment Installation Instructions for proper setup. 5. Select the "zone" position on the 2-speed heat pump control board. 6. As an option O/W2 can be used to allow Thermidistat to control second-stage heat.
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K. Power On Check E4 — If Thermidistat Control’s internal memory fails, E4 will be displayed. Replace Thermidistat Control. E5 — If Thermidistat Control cannot properly read humidity, E5 will be displayed. Replace Thermidistat Control. E6 — If defrost cycle continues for longer than 15 minutes. E6 will be displayed. Check heat pump wiring or for failed heat pump defrost control. When AC power is first applied, all segments of display are turned on for a few seconds.
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SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including: • Unit Familiarization • Maintenance • Installation Overview • Operating Sequence A large selection of product, theory, and skills programs is available, using popular video-based formats and materials. All include video and/or slides, plus companion book.