Carrier PTACSTAT-NP-HP Istruzioni per l'installazione

P T A C S T A T --- N P --- H C ,

P T A C S T A T --- N P --- H P

Installation Instructions

Operating Manual

A07050

Non---Programmable Thermostat

NOTE: Read the entire instruction manual before starting the installation.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 3....................................

INTRODUCTION 4..............................................

INSTALLATION CONSIDERATIONS 4..............................

INSTALLATION 5...............................................

Step 1 — Thermostat Location 5...................................

Step 2 — Install Thermostat 6......................................

Step 3 — Set Thermostat Configuration 11...........................

Step 4 — Check Thermostat Operation 16............................

OPERATING THE THERMOSTAT 18...............................

TROUBLE SHOOTING 23........................................

WARRANTY 25.................................................

WIRING DIAGRAMS 30..........................................

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 installation 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,andCAUTION.These

words are used with the safety--alert symbol. DANGER 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 may result in minor personal injury or

product and property damage. NOTE is used to highlight suggestions which will

result in enhanced installation, reliability, or operation.

INTRODUCTION

Carrier’s PTAC ComforttSeries non--programmable thermostat is a

wall--mounted, low--voltage thermostat which maintains room temperature by

controlling the operation of a heating and/or air conditioning system. Both heat

pump and air conditioner models are available. A variety of features are provided

including battery operation, memory in case of power interruption, separate

heating and cooling setpoints, backlighting, and built--in installer test.

This Installation Instruction guide and owners manual covers installation,

configuration, start up and operation of the PTAC specific Comfort Series line of

thermostats.

INSTALLATION CONSIDERATIONS

Models

There are two models for the PTAC Comfort Series non--programmable thermostat,

AC and HP versions. The model PTACSTAT--NP--HC--x is designed for AC

systems, controlling one stage of cooling and one stage of heating. It will not operate

a heat pump. Model PTACSTAT--NP--HP--x is designed for HP systems, controlling

one stage of cooling and two stages of heating. The HP thermostat model can be

converted to an AC unit. Select the appropriate model for the intended application.

Power

All Comfort Series models are dual powered. They can operate from batteries

(optional) or 24VAC power. Operation from 24VAC is preferred, if available.

Batteries

Battery operation is available for installations where there is no common (C)

wire available at the thermostat. For battery operation, install two alkaline AA

batteries. The thermostat is designed to operate up to one year on a set of

batteries. A battery indicator on the display warns when battery replacement is

needed. If batteries are installed and the thermostat is operated from 24VAC

power, battery operation will occur only when 24VAC power is not present. The

changeover between 24VAC power and battery power is automatic.

For HeatCool system, 5 wires are needed for 24VAC operation and 4 wires are

required for battery operation.

For HP system, 6 wires are needed for 24VAC operation and 5 wires for battery

operation.

When battery operation is used, the C terminal does not need to be connected.

NOTE: Batteries are not required when there are enough wires for proper

operation.

INSTALLATION

Mounting to a horizontal junction box.

For those installations requiring it, mounting hole locations for the

non--programmable are spaced to fit a horizontal junction box.

Step 1 — Thermostat Location

SApproximately 5 ft (1.5m) from floor.

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

partitioning wall.

SOn a section of wall without pipes or duct work.

Thermostat should NOT be mounted

SClose to a window, on an outside wall, or next to a door leading to the

outside.

SExposed to direct light or heat from the sun, a lamp, fireplace, or other

temperature--radiating objects which could cause a false reading.

SClose to or in direct airflow from the unit.

SIn areas with poor air circulation, such as behind a door or in an

alcove.

Step 2 — Install Thermostat

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury

or death.

Before installing thermostat, turn off all power to equipment.

There may be more than 1 power disconnect. Lock out and

tag switch with a suitable warning label.

!WARNING

1. Turn OFF all power to unit.

2. If an existing thermostat is being replaced:

a. Remove existing thermostat from wall.

b. Disconnect wires from existing thermostat, 1 at a time. Be careful not

to allow wires to fall back into the wall.

c. As each wire is disconnected, record wire color and terminal marking.

d. Discard or recycle old thermostat.

ENVIRONMENTAL HAZARD

Failure to follow this caution may result in environmental

damage.

Mercury is a hazardous waste. Federal regulations require that

Mercury be disposed of properly.

CAUTION

3. Open thermostat (mounting base) to expose mounting holes. The base

can be removed to simplify mounting. Press the thumb release at the top

of the thermostat and snap apart carefully to separate mounting base from

remainder of thermostat.

4. Route thermostat wires through large hole in mounting base. Level mounting

base against wall (for aesthetic value only—thermostat need not be level for

proper operation) and mark wall through 2 mounting holes. See Fig. 1.

A08093

Fig. 1 -- Backplate Mounting

5. Drill two 3/16--in. mounting holes in wall where marked.

6. Secure mounting base to wall with 2 anchors and screws provided

(additional anchoring holes available for more secure mounting, if

needed) making sure all wires extend through hole in mounting base.

7. Adjust length and routing of each wire to reach proper terminal and

connector block on mounting base with 1/4 in. of extra wire. Strip only

1/4 in. of insulation from each wire to prevent adjacent wires from

shorting together when connected. See Fig. 2.

A08094

Fig. 2 -- Secure Wires to Terminal Strip

8. Match and connect wires from the PTAC unit to proper terminals on the ther-

mostat connector blocks (see Fig. 3). Do not remove factory--installed jumper

wire from Rc and Rh terminals. The R wire from the PTAC can be connec-

ted to either position.

R W Y O Gh Gl C

Rc - 24 VAC, from cooling equipment

Rh - 24 VAC, from heating equipment

W - Heating

C - Common 24 VAC

G - Fan

Y - Cooling

O/B

reversing

valve

Not used

PTAC Terminal

Designations

Thermostat Terminal Designations

A08092

Fig. 3 -- Terminal Designations

ELECTRICAL OPERATION HAZARD

Failure to follow this caution may result in equipment damage

or improper operation.

Improper wiring or installation may damage the thermostat.

Check to make sure wiring is correct before proceeding with

installation or turning on unit.

CAUTION

9. Push any excess wire into wall and against mounting base. Seal hole in

wall to prevent air leaks. Leaks can affect operation.

10. Snap case back together. Attach thermostat to backplate by inserting tab

on bottom edge and hinging up until top snap secures. See Fig. 4.

A08095

Fig. 4 -- Attach Comfort Series Programmable Thermostat

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