PTAC NT Series Guide de démarrage rapide

P T A C

ATTENTION INSTALLING PERSONNEL

As a professional installer you have an obligation to know the product

better than the customer. This includes all safety precautions and

related items.

Prior to actual installation, thoroughly familiarize yourself with this

Instruction Manual. Pay special attention to all safety warnings. ften

during installation or repair it is possible to place yourself in a position

which is more hazardous than when the unit is in operation.

Remember, it is your responsibility to install the product safely and to

know it well enough to be able to instruct a customer in its safe use.

Safety is a matter of common sense...a matter of thinking before acting.

Most dealers have a list of specific good safety practices...follow them.

The precautions listed in this Installation Manual are intended as

supplemental to existing practices. However, if there is a direct conflict

between existing practices and the content of this manual, the

precautions listed here take precedence.

This manual must be left with the owner

of the equipment.

11113305

May 2001(1)

Made in USA

NT Series Units

Package Terminal

Air Conditioner/Heat Pump

Installation Instructions

and Owners Manual

IMPORTANT NOTE TO THE OWNER

This equipment is to be serviced by professionally trained personnel only. If this equipment is improperly installed,

adjusted or altered by an unqualified person, a safety hazard may result.

IMPORTANT NOTE TO THE SERVICER

Read this manual and familiarize yourself with the specific items which must be adhered to before attempting to

service this unit. The precautions listed in this manual should not supersede existing practices but should be consid-

ered as supplemental information.

Your warranty certificate is also supplied with the unit. Read the warranty carefully and note what

is covered. Keep the warranty certificate in a safe place, so you can find it, if necessary.

Before using this manual, check the serial plate for proper model identification.

THE INSTALLATI N AND SERVICING F THIS EQUIPMENT MUST BE PERF RMED BY

RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.

QUALIFIED, EXPERIENCED TECHNICIANS NLY.

Due to policy of continual product improvement, the right is reserved to

change specifications and design without notice.

Contents

Unit Features ........................................................................................................................... 3

General Infor ation................................................................................................................ 4

Installation Instructions ......................................................................................................... 5

Wiring ...................................................................................................................................... 7

Operating Instructions ........................................................................................................... 8

Care and Cleaning .................................................................................................................10

Nor al Operating Sounds and Conditions .........................................................................12

Obtaining Service ..................................................................................................................12

Unit Features

This unit has many features which are different than those found on conventional PTAC units. The servicer must be

familiar with these features in order to properly service the unit.

 Automatic 3-minute compressor lockout - After the

compressor cycles off, it will not restart for three

minutes.

 Automatic 2nd stage electric heat - If the room tem-

perature falls to 4.0°F below the set point tempera-

ture, the reverse cycle heat is shut off and the

electric strip heat is turned on.

 Automatic freeze protection - Whenever power is

supplied to the unit and the master switch is in the

N position, automatic freeze protection is active.

If the unit senses temperature below 40°F, the fan

motor and electric strip heat are turned on.

 Random restart delay - To help eliminate power

surges after a power outage, the unit is equipped

with a two to four minute random restart delay fea-

ture. Whenever the unit is plugged in with the mas-

ter switch turned on and the mode switch set in the

cool or heat mode, a random restart will occur. A

random restart condition can be avoided by setting

the mode switch in the fan only or off position be-

fore applying power to the unit.

 Fuse holder - n all 265 volt units, fuse holders are

factory installed. Check for blown fuse if unit does

not operate. Fuse holder is located behind the

front (Figure 1). Replacement fuses may be pur-

chased from the Parts Department or contact your

sales representative for part numbers.

 Front mounting holes - Two mounting holes are

provided to give the owner the option of securing

the front to the chassis. The mounting holes are lo-

cated behind the intake grille (Figure 2). The owner

must supply two 1/2 inch long #8 sheet metal

screws per unit. The two screws must be removed

before the front can be removed.

Fuse

Holder

Figure 1

Contro Pane

HOLES TO

SECURE FRONT

Figure 2

Chassis Front

WARNING

To avoid possible equipment damage, personal injury, fire or death, the following instructions must be observed

regarding unit location, air requirements and operating procedures

General Information

Transportation Damage

All units are securely packed in shipping containers tested according to International Safe Transit Association specifi-

cations. The carton must be checked upon arrival for external damage. If damage is found, a written request for

inspection by the carriers agent must be made immediately.

In the event of damage, the consignee must:

1. Make notation on delivery receipt of any visible damage to shipment or container.

2. Notify carrier promptly and request an inspection.

3. In case of concealed damage, carrier should be notified as soon as possiblepreferably within 5 days.

4. File the claim with the following supporting documents within the 6 month statute of limitations.

a. riginal Bill of Lading, certified copy, or indemnity bond.

b. riginal paid freight bill or indemnity in lieu thereof.

c. riginal invoice or certified copy thereof, showing trade and other discounts or reductions.

d. Copy of the inspection report issued by carriers representative at the time damage is reported to the carrier.

The carrier is responsible for making prompt inspection of damage and for a thorough investigation of each claim. The

distributor or manufacturer will not accept claims from dealers for transportation damage.

NOTE: Consult sales literature for the appropriate voltage and amperage selections, if applicable. For additional

details and illustrations of the accessories, refer to the Architects and Engineers Manual.

Unit Accessories

This unit is designed for through-the-wall installation in new or existing buildings. To complete the installation of this

PTAC, an insulated wall sleeve and an outdoor grille (either the stamped aluminum grille or the architectural grille) are

required.

The chassis and the cabinet front are shipped in one carton. ptional accessories to complete a particular installation

are the following:

Optional Accessories

Subbase Kit

Key Lock Kit

Hard Wire Kit

Fuse Holder Kit

Power Switch Kit

Circuit Breaker Kit

Wall Sleeve Kit

Leveling Legs Kit

Stamped Grille Kit

Deflector Grille Kit

Architectural Grille Kit

Drain Kit

Filter Kit

Installation Instructions

To ensure that the unit operates safely and efficiently, it must be installed, operated and maintained according to these

installation and operating instructions and all local codes and ordinances or, in their absence, with the latest edition of

the National Electric Code. The proper installation of this unit is described in the following sections. Following the

steps in the order presented should ensure proper installation.

WARNING

To prevent death or personal injury due to electrical shock, ensure the following:

 The electrical accessories are installed only in the pre-drilled mounting holes,

 The electrical wiring is not installed and does not hang below the pre-drilled mounting holes or lie in the unit

base pan.

SLEEVE STIFFENER AND REAR CLOSURE PANEL

REMOVAL

Before the chassis can be installed in the wall sleeve, the

sleeve stiffener and the rear closure panel shown in

Figure 3 must be removed.

1. Remove the zigzag folded cardboard sleeve stiffener.

2. Remove the rear closure panel by folding the four

flaps as indicated in Figure 4.

3. Grasping the top and bottom flanges of the rear clo-

sure panel as shown in Figure 5, the entire panel is

pulled out diagonally from one side.

DRAIN KIT INSTALLATION (Optional Accessory)

During normal reverse cycle heating operation, conden-

sate water will drain out of the rear of the wall sleeve. If

this water is objectionable, a DK9001 drain kit should be

installed. The drain kit has provisions for draining the

water from either the right or left side of the sleeve

externally or from the bottom of the sleeve internally. The

drain kit must be installed before the outdoor grille is

installed. Refer to the Installation Instructions supplied

with the drain kit for a complete description of the

installation procedure.

Sleeve

Stiffener

Figure 3

Wa S eeve with Stiffener

Rear Closure

Panel

Flaps

Figure 4

Stiffener Remova

Figure 5

Rear Enc osure Pane Remova

Installation Instructions

FRONT REMOVAL

1. Grasp the cabinet front as shown in Figure 7.

Figure 7

Cabinet Front Remova View 1

2. Pull the bottom of the cabinet front away from the

chassis until the retaining clips disengage (Figure 8).

NOTE: If front is secured with screws, refer to Figure

2 for removal.

Figure 8

Cabinet Front Remova View 2

3. Lift the cabinet front off the chassis. Reverse this pro-

cedure to reinstall the cabinet front.

CHASSIS INSTALLATION

1. Remove the cabinet front from the chassis as de-

scribed in Front Removal.

2. Insert the chassis into the wall sleeve (Figure 9).

Chassis

Wall Sleeve

Outside

Wall

Slide Chassis In

Figure 9

Chassis Insta ation View 1

SLEEVE INSTALLATION

In order for condensate water to drain properly inside the

unit, the sleeve must be installed properly:

 Level from right to left.

 A slight downward pitch from the indoor side to the

outdoor side as shown in Figure 6.

Refer to the Installation Instructions supplied with the

PTAC wall sleeve for a complete description of the

installation procedure.

Wall

Sleeve

Outside

Wall

OutsideInside Level

1/4 Bubble

Tilt To

Outside

Figure 6

Proper S eeve Ti t

OUTDOOR GRILLE

An outside grille must be installed to direct air flow for

proper unit operation and also protect the outdoor coil.

The grille must be installed before installing the chassis.

Refer to the Installation Instructions supplied with the

outdoor grille kit for a complete description of the instal-

lation procedure.

This model requires either a Stamped Grille Kit (Model

SGK--B) or an Architectural Grille Kit (Model AGK--B).

When replacing an old chassis with an existing grille or

using a specialized grille in a new installation, please

check with your sales representative to determine if the

new chassis should be used with the non-standard

specialized grille. An improper outdoor grille can de-

crease cooling or heating capacity, increase energy

usage and shorten compressor life and possibly void the

warranty.

3. Slide the chassis into the wall sleeve until the chassis

flanges contact the front edge of the wall sleeve (Fig-

ure 10).

Chassis

Wall Sleeve

Outside

Wall

Screws

(3 on each

side of unit)

Figure 10

Chassis Insta ation View 2

Installation Instructions

4. Secure the chassis to the wall sleeve using three

screws on each side of the chassis to ensure a

proper seal between the chassis and the wall sleeve

(Figure 10). The screws are supplied in a plastic bag

attached to the power cord.

IMPORTANT NOTES:

1. The unit is equipped with a rubber grommet mounted

compressor. These grommets are factory set and re-

quire no adjustment.

2. If a standard subbase is used, be sure the right hand

subbase cover is removed before the chassis is in-

stalled in the sleeve.

3. Check the indoor and outdoor grilles for obstructions

to air flow. The unit must be located where curtains,

furniture, trees, or other objects do not block the air

flow to and from the unit. If air is obstructed and/or

deflected back into the unit, the air conditioner com-

pressor may cycle on and off rapidly. This could

damage the compressor or possibly void the war-

ranty.

Wiring

WARNING

To avoid the risk of electrical shock, personal injury

or death, do not service this unit without first opening

all disconnects and/or removing the unit cord set

plug from the wall outlet.

CAUTION

To avoid the risk of electrical shock, personal injury

or property damage, do not use an extension cord

with this unit.

CAUTION

To avoid the risk of fire, property damage or personal

injury use only copper conductors.

CAUTION

To avoid the risk of personal injury, wiring to the unit

must be properly polarized and grounded.

Cord connection to a wall socket is not permitted for 265-

volt units. All 265-volt units must be hard wired using the

hard wire kit or make use of the plug-in receptacle in the

standard subbase.

WARNING

This air conditioner is not meant to provide

unattended cooling or life support for persons or

animals who are unable to react to the failure of this

product.

The failure of an unattended air conditioner may

result in extreme heat in the conditioned space

causing overheating or death of persons or animals.

Precautions must be taken to warn of or guard

against such an occurrence.

Operating Instructions

USERS CONTROLS

Two rotary knobs (Figure 11) controlling temperature and

operational mode are located behind the control door

located to the top-right of the cabinet front.

THERMOSTAT SETTING

Turning the thermostat control clockwise will provide a

cooler room temperature; turning it counterclockwise will

provide a warmer room temperature. Adjusting the

thermostat to the mid setting (vertical) will set the room

temperature at approximately 75°F.

MODE SWITCH

Table 1 describes the unit function corresponding to the

various mode switch settings.

Warm Cool Fan

Only

Low

Heat

High

Heat

High

Cool

Low

Cool

Off

Thermostat Mode Switch

Figure 11

User Contro s

Mode Switch Settin

Switch Position Unit Function

OFF Unit is completely off. However, open all

disconnects or remove plug before servicing

FAN ONLY Unit operates on low fan speed to circulate room air.

LOW COOL Unit operates on the low fan speed to circulate

air for cooling.

HIGH COOL Unit operates on the high fan speed to circulate

air for cooling.

LOW HEAT Unit operates on the low fan speed to circulate

air for heating.

HIGH HEAT Unit operates on the high fan speed to circulate

air for heating.

Tab e 1

Mode Switch Settings

WARNING

To prevent death or personal injury due to electrical

shock, unplug the nit at the wall outlet or turn off

power at the fuse box or circuit breaker before

servicing the unit. Line voltage will bee present at

the control board, terminals L1 and L2, whenever

power is applied to the unit regardless of the master

switch position.

AN CYCLE SWITCH

The fan cycle switch sets the operational mode of the

fan. In the N position, the fan will run continuously

whenever the unit is in the heat or cool mode. In the

AUT position, the fan will cycle on and off with the

compressor or electric heater when the unit is in the cool

or heat mode.

OUTSIDE AIR VENT CONTROL

The chassis is shipped with the outside air vent in the

closed position. If outdoor air is required, the vent

position should be changed before the chassis is in-

stalled into the wall sleeve. If the chassis is already

installed, then it will need to be uninstalled to

change the position of the vent. Refer to Chassis

Installation on page 6.

To open the outside air vent, use the following proce-

dure:

1. Remove the two (2) screws from the right side of the

sheet metal vent cover and set aside.

2. Grasp the sheet metal cover and bend open along

the scored section on the left side of the sheet metal

cover to whatever position you require, being careful

to secure the left side of the cover so that the two (2)

remaining screws are not stripped out and removed

from the partition panel.

3. After positioning the sheet metal cover to an open po-

sition, reinstall the two (2) screws removed in step

one to secure the plastic mesh, located behind the

sheet metal cover, back into the partition wall where

they were earlier removed.

NOTE: The vent will now e in a permanently open

position. It can e closed again y reversing the steps

a ove.

The chassis may now be installed into the wall sleeve.

AIR DISCHARGE GRILLE

The discharge grille can be adjusted to expel air at either

a 15° or 40° angle as shown in Figure 12.

Use the following procedure to change the angle of the

discharge air flow:

1. Remove the front cabinet (see Front Removal).

2. Position the front so that the backside is accessible

as shown in Figure 13.

3. Remove the four nuts which secure the discharge air

grille to the cabinet front as shown in Figure 14.

4. Rotate the grille 180° end-for-end.

5. Reinstall the nuts securing the discharge air grille to

the cabinet front. Reinstall the cabinet front on the

unit.

6. If screws were removed in step 1, reinstall. ther-

wise, reinstall cabinet front.

Operating Instructions

15° Discharge

Angle

40° Discharge

Angle

Figure 12

Discharge Gri e Orientation Options

Figure 13

Discharge Air F ow

Figure 14

Discharge Air F ow Gri e Remova

Care an Cleaning

INTAKE AIR ILTER

The intake air filter and vent door filter are both con-

structed of durable polypropylene. The air intake air filter

is snapped into the cabinet front, and the intake air grille

swings out for easy access to the filter. Before cleaning

the intake filter, turn the unit off by setting the mode

switch to the FF position. Filter should be cleaned as

required.

The following procedure is used to remove the intake

filter:

1. pen the intake grille by grasping the top intake lou-

ver (Figure 15).

2. Pull the intake grille open (Figure 16).

3. Press down lightly on the thumb tab at the top of the

filter and remove the filter (Figure 17).

4. Clean filter with vacuum or with running water.

Reverse this procedure to reinstall the filter.

WARNING

To prevent death, personal injury or property damage due to electrical shock, disconnect the electrical power

supply before cleaning this unit.

Figure 15

Opening Intake Gri e

Figure 16

Intake Gri e Open

Figure 17

Fi ter Remova

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