Carrier Programmable Dual Fuel Thermostats Installation, Start-Up, And Operating Instructions Manual

Programmable dual fuel thermostats

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Installation, start-up, and operating instructions manual (9 pages)

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Installation, Start-Up, and Operating Instructions

NOTE: Read the entire instruction manual before starting the

installation.

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INDEX

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

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

SYSTEM CONSIDERATIONS ....................................................1

APPLICATION ..............................................................................2

DESCRIPTION OF OPERATION ............................................2-3

INSTALLATION CONSIDERATIONS .......................................3

INSTALLATION......................................................................3-12

Thermostat Location .................................................................3

Set DIP Switches...................................................................3-4

Install Thermostat .....................................................................4

Set Thermostat Configuration ...............................................4-6

Check Thermostat Operation....................................................6

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

Checklist....................................................................................7

WIRING DIAGRAMS .............................................................7-10

OPERATIONAL INFORMATION.............................................11

TROUBLESHOOTING ...............................................................11

CONFIGURATION RECORD....................................................12

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 thermostat.

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

Carrier's 7-day programmable dual fuel thermostat is a wall-

mounted, low-voltage thermostat which provides proper control of

a heat pump (HP) and furnace combination without using a

HP/furnace interface kit. Separate heating and cooling set points,

plus auto changeover allow setback programming for maximum

energy savings. Up to 4 time/temperature settings per 24 hour

period for 7 independent days may be programmed. Batteries are

not required; during a power interruption, the internal memory

stores programs for an unlimited time and the clock continues to

run for at least 72 hrs.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1

PC 101

Tab misc. misc.

Programmable Dual Fuel Thermostats

Page

Catalog No. 03TS-TA9

Printed in U.S.A.

→ SYSTEM CONSIDERATIONS

The dual fuel thermostat is designed to be used only in HP/furnace

installations. It replaces a conventional 2-stage HP thermostat and

a HP/furnace interface kit. An outdoor temperature sensor, Part

No. TSTATXXSEN01-B MUST be used with this thermostat. It is

supplied with thermostat.

HEIGHT (IN.)

4-1/4

→ Fig. 1-Carrier Programmable Thermostat

If HP is not already equipped with a high-pressure switch, one

must be added for dual fuel applications. It protects HP from

overpressure which would occur if a failure resulted in both

HP and furnace operating at same time. Kit No.

KSAHI0201HPS includes required switch and instructions

for its proper installation.

A HP/furnace installation has several special requirements. Fore-

most is that furnace and HP must not be allowed to operate at same

time, except during HP defrost. A second is to have furnace

complete a heating cycle once it is turned on. A third is the need

to have HP not operate at all when outdoor temperatures are below

a certain value. A fourth is to have the furnace not operate at all

when outdoor temperatures are above a certain higher value.

Finally, HP and furnace must work together properly to provide an

efficient and comfortable defrost. These requirements are ad-

dressed by the dual fuel thermostat itself and an interface kit is

NOT required.

Form TSTAT-18SI

As an ENERGY STAR Partner, Carrier Corporation has

determined that this product meets the ENERGY STAR

guidelines for energy efficiency.

WIDTH (IN.)

DEPTH (IN.)

7-1/2

1-3/8

Pg 1

10-98

Replaces: TSTAT-9SI

A98426

Table of Contents

Summary of Contents for Carrier Programmable Dual Fuel Thermostats

Page 1: Table Of Contents
INTRODUCTION A HP/furnace installation has several special requirements. Fore- Carrier’s 7-day programmable dual fuel thermostat is a wall- most is that furnace and HP must not be allowed to operate at same mounted, low-voltage thermostat which provides proper control of time, except during HP defrost.
Page 2: Application
→ APPLICATION will "push" the "balance point" so the two settings do not overlap. Likewise, moving up the "balance point" will push the "auxiliary The dual fuel thermostat is designed for the following applications: heat lockout" setting. 1-stage cool, 2-stage heat: 1-speed HP with 1-stage furnace When the two settings are the same, the system views this as a 1-stage cool, 3-stage heat: 1-speed HP with 2-stage furnace single outdoor "balance point"...
Page 3: Installation Considerations
→ Table 1—Heating Stages BALANCE POINT WIRING DIAGRAM SYSTEM TYPE STAGE 1 STAGE 2 STAGE 3 SETTING Above Furnace — 1-speed HP Fig. 2 1-stage furnace Below Furnace — — Above Furnace Lo Furnace Hi 1-speed HP Fig. 4, 6, 8 2-stage furnace Below Furnace Lo...
Page 4: Install Thermostat
Switch B - Select Smart or Normal Setback Recovery Selects between normal and smart recovery from setback. Normal Improper wiring or installation may damage the thermostat. recovery changes to the new set point at the programmed time. Check to make sure wiring is correct before proceeding with Smart recovery, which is active in heating mode only, starts earlier installation or turning on unit.
Page 5 press of SET TIME/TEMP button switches between the available 3. Use up and down buttons to move between C and F on large option (small display) and the available selections within each display. option (large display). 4. Press SET TIME/TEMP button again to flash upper small display for selection of another option, or press END to exit CONFIGURATION OPTIONS—SELECTION: the configuration mode.
Page 6: Check Thermostat Operation
→ Table 2—Active Outputs for Each Operating State 1-SPEED HEAT PUMP 2-SPEED HEAT PUMP Cool Y/Y2, O/W2, G Lo Cool Y1/W2, O/W2, G Hi Cool Y1/W2, Y/Y2, O/W2, G HP Heat Y/Y2, G Lo HP Heat Y1/W2, G Hi HP Heat Y1/W2, Y/Y2, G Furnace Lo W/W1...
Page 7: Final Settings
→ → Step 6—Final Settings Step 7—Checklist 1. Assuming the system is to be left in operation after the 1. Put away tools and instruments, and clean up debris. installation is complete, use MODE button to select between 2. Review Homeowner’s Guide with owner. HEAT, COOL, EHEAT, or AUTO to provide the desired 3.
Page 8 DUAL FUEL SINGLE-STAGE TWO-SPEED THERMOSTAT FURNACE HEAT PUMP DUAL FUEL SINGLE-STAGE SINGLE-SPEED THERMOSTAT FURNACE HEAT PUMP 24 VAC HOT 24 VAC HOT HEAT STAGE 3 W/W1 (FURNACE) HEAT STAGE 2 HEAT/COOL W/W1 (FURNACE) STAGE 2 Y/Y2 (COMPRESSOR HI) HEAT/COOL Y/Y2 STAGE 1 RVS COOLING O/W2...
Page 9 VARIABLE-SPEED 80% NON-CONDENSING FURNACE VARIABLE-SPEED 80% NON-CONDENSING FURNACE BOARD DUAL FUEL SINGLE-SPEED BOARD THERMOSTAT HEAT PUMP DUAL FUEL TWO-SPEED THERMOSTAT HEAT PUMP RVS COOLING O/W2 FURNACE FURNACE O/W2 RVS COOLING BOARD BOARD HEAT/COOL HEAT STAGE 3 STAGE 1 Y1/Y2 Y1/W2 (COMPRESSOR LO) (FURNACE HI) HEAT STAGE 2...
Page 10: Wiring Diagrams
→ WIRING DIAGRAM NOTES: 1. Heat pump MUST have a high pressure switch for dual fuel applications. 2. Outdoor Air Temperature Sensor must be attached in all dual fuel installations. 3. The RVS Sensing terminal "L" should not be connected. This is internally used to sense defrost operation. 4.
Page 11: Operational Information
→ OPERATIONAL INFORMATION Five-minute Compressor Timeguard This timer prevents the compressor from starting unless it has been off for at least 5 minutes. It can be defeated for 1 cycle by simultaneously pressing the FAN button and the UP button. Fifteen-minute Cycle Timer This timer prevents the start of a heating or cooling cycle until at least 15 minutes after the last start of the same cycle.
Page 12: Configuration Record
TIME HEAT COOL TIME HEAT COOL TIME HEAT COOL TIME HEAT COOL A98449 Copyright 1998 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 tstat18i Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.