Armstrong PWC18E9.2-1, PWC18E7.2-1 Owner’s Manual

INSTALLATION AND

MAINTENANCE INSTRUCTIONS

PWC Series "Magic-Pak"

Self-Contained Heat Pump

[ WARNING

Improper installation, adjustment, alteration, service or maintenance can cause injury

or property damage. Refer to this manual. For assistance or additional information,

consult a qualified installer or service agency.

I _'WARNING I

For your safety, do not store or use gasoline or other flammable vapors and liquids in the

vicinity of this or any other appliance. Such

actions could result in property damage, per- sonal injury or death.

TABLE OF CONTENTS

INSTALLATION ....................................... 2

OPERATION .......................................... 5

MAINTENANCE ..................................... 6

Installation and servicing of air conditioning equipment can be hazardous due to internal

refrigerant pressure and live electrical compo- nents. Only trained and qualified service

personnel should install or service this equip- ment. Installation and service performed by

unqualified persons can result in property damage, personal injury or death.

] A CAUTION I These units are not approved for mobile home applications. Such use could result in prop-

erty damage, p_rsonal injury or death.

WIRING DIAGRAMS .............................. 7

WARRANTY ......................................... 10

ManufacturedBy

A.A.C.

A Lennox International Company

421 MonroeStreet

Bellevue,OH 44811

IIIIIIIIIIII)llllllllllllllllllllllllll}lilllllll

I A CAUTION [

The installation of this appliance must conform to the requirements of the National Fire Protection Associa- tion; the National Electrical Code, ANSl/NFPA No. 70 (latest edition) in the United States; the Canadian

Electrical Code Part 1, CSA 22.1 (latest edition) in Canada; and any state or provincial laws or local ordi- nances. Local authorities having jurisdiction should be consulted before installation is made. Such appli-

cable regulations or requirements take precedence over the general instructions in this manual.

Save these instructions for future reference

INSTALLATION

General

=.seinstructions explain the recommended method of

,llation of the PWC heat pump unit and associated

e_uctricalwiring.

the unit inside the carton ifthe carton isdamaged. File a cfaimwith the transportation company. If any damages

are discovered and reported to the carrier DO NOT INSTALL THE UNIT, as claim may be denied.

Check the unit rating p'late to confirm specifications are as ordered.

This unit is designed and approved for use as a self- contained air to air heat pump system.

These instructions, and any instructions packaged with mating components and/or accessories, should be carefully read prior to beginning installation. Note particularly any

CAUTIONS or WARNINGS in these instructions and all la- bels on the units.

These instructions are intended as a general guide only, for use by qualified personnel and do not supersede any

national or local codes in any way. Compliance with all local, state, provincial or national codes pertaining to this

type of equipment should be determined priorto installa- tion.

Inspection

Upon receipt of equipment, carefully inspect itfor possible

shipping damage. If damage is found, it should be noted

on the carrier's freight bill. Take special care to examine

PWCInstallation

Location

The design is certified for through-the-wall installation only. The interior portions of the unit may be surrounded by a

closet with clearances to combustible material held to 0" at sides, 0" top and 0" front ofthe plenum.

The grille side of the unit may be flush with, or extend

beyond, the face of the exterior wall, but should not be recessed more than 2" from the face of the building and

should not be obstructed with trees, landscape materials

or building structure.

There is no minimum clearance required on locating the unit to an interior corner of a building. If the unit is to be enclosed, provisions should be made allowing access to

the indoor side of the unit for changing filters and for

inspection. At least 33" of unobstructed space should be provided infront of the indoor side, whether enclosed or

not, to permit removal of the cooling chassis should repairs or inspection be required.

Fin-re 1

Sleeve

F MinimumOpening to

Align with Return Air Opening

In Unit.

VibrationIsolating Matedal

{TopLayer)

If the unitis installed in a residential garage, it must be

located or protected to avoid physical damage by vehicles.

The unit must be installed so that no electrical compo-

nents are exposed to water.

[A CAUT,ON]

This unit must be installed level to allow for

proper drainage of the chassis base pan and unit drain pan.

Installing With a Wall Sleeve

Seal the space between the unit and building opening using a non-hardening caulking compound. The seal

mustbe weathertight to prevent entrance of moisture

and water into the building. Make sure the drain holes in the base are not plugged withcaulking,

Condensate Drain

Install the plastic drain tube (furnished) over the 5/8" O.D.

fitting welded to the center ofthe condensate pan. Con-

nect the other end of the drain tube to trapped drain line

(see Figure 2). The plastic drain connection to the chassis

base is provided so that it may be disconnected from the

permanent drain tubing in the base of unitin the event it

becomes necessary to remove the chassis assetnbly.

[ _, CAUTION l

The sleeve is not intended as the sole support for the unit. An additional support must be

provided near the return opening on the unit

for adequate support. The use of vibration

isolation material between the unit and the support is recommended.

Refer to the installation instructions packed with the wall sleeve and Figure 1 for guidance in assembly and mount-

ing using a wall sleeve.

Make sure the gaskets attached to the sleeve are not damaged.

Seal the space between the wall sleeve and-the building opening with non-hardening caulking compound. The seal

must be weathertight to prevent entrance of moisture and water into the building.

Assure that the unit is completely seated against the gaskets on the wall sleeve.

The drain line should pitch gradually downward at least 1" per 10feet of horizontal run to the open drain.

Be certain that the plastic drain tubing has free drainage and is not crimped or flattened at any bend.

PWC Drain Installation

Drain Pan_

Installing Without a Wall Sleeve

Refer to the following directions and Figure I for guidance

in installing the unit without a wall sleeve:

Measure the size of the unit and provide an opening in

an outside wall that will accept the unit. Local ordi- nances may require a steel lintel to support the wall

above the opening. The opening must be square in all 4 corners.

Position the unit so that the grilles on the outside face

of the unit are flush or extend beyond the face of the exterior wall, but not recessed more than 2" from the face of the building. Provide a support under the

unit, inside the building. Make sure that the inside

support does not block the return air. The unit should

be installed level

Figure 2

Limitations

The unit should be installed in accordance with all national and local safety codes.

Limitations of the unit and appropriate accessories must also be observed.

The unit must not be installed with any ductwork in the outdoor air stream. The outdoor fan is not designed to

operate against any additional static pressure.

Minimum and maximum operation conditions must be observed to assure maximum system performance with minimum service required. Refer to Table 1 onpage 4 for

the application limitations of the unit.

Application Limitations AirFilter

Outdoor Ambient Air Temperature °F

Minimum DB - Cooling Maximum DB

Indoor Ambient Air Temperature °F I

Minimum Maximum

DB/WB DB DB,_VB DB

Cool Heat Cool Heat

62/57 50 90/72 80

Table t

Cool Heat

125 75

All indoor return air must be filtered. A permanent-type filter is furnished with the unit, located directly behind the

access panel. Removing the panel permits access to the filter.

The filter should be cleaned at least three times during each of the heating and cooling seasons, or more fre- quently if unusual conditions are encountered. To clean the permanent filter, shake filter to remove excess dirt

and/or use a vacuum cleaner. Wash filter in soap or detergent water and replace after filter is dry. It is not necessary to oil the permanent filter after washing.

If an installation is.made in which it is more desirable to mount the filter exterior to the unit, in the return duct work

or elsewhere, the permanent filter can be used or re- placed with a disposable filter. If a disposable filter is used, use the information provided in Table 2 when sizing

the disposable filter.

Ductwork

Ductwork should be designed and sized according to the methods in Manual Q of the Air Conditioning Contractors of America (ACCA).

It is recommended that supply and return duct connec-

-'_s at the unit be made with flexible joints.

1ne supply and return air duct systems should be de- signed for the CFM and static requirements of the job.

They should not be sized to match the dimensions of the duct connections on the unit.

Supply duct flanges are shipped flat and must be bent up before attaching the supply duct.

To connect the return duct to the unit, use a straight piece of duct 22" wide by 7" deep. Insert the duct into the return

opening in the bottom of the unit. Flange the duct over the

existing flanges around the opening inside unit. Make sure that all sides of the duct are flanged over to permit removal of cooling chassis if required. Use a flexible

connection to attach remainder of return duct. The return duct should be sealed to the unit casing and terminate

outside the space contai_ningthe furnace.

The return duct must allow for the unit drain pan connections and drain tube.

[ ACAUTION J

no not screw intothe side of the drain pan.

Minimum Required Surface Area

for Disposable Filters

Model Number Filter Area (minimum)

PWC183 - 480 square inches PWC24,3 480 square inches

Table 2

Thermostat

The room thermostat should be located on an inside wall where it will not be subject to drafts, sun exposure or heat

from electrical fixtures or appliances. Follow the manufacturer's instructions enclosed withthe thermostat

for general installation procedures. Color coded insulated

wires (#18 AWG) should be used to connect the thermo- stat to the unit.

Electrical Connections

All wiring must be done In accordance with the

National Electrical Code (NEC), ANSl/NFPA No. 70 (latest edition); Canadian Electrical Code CSA C22.2 Part I (latest edition); or local codes, where they prevail. Any alteration of internal wiring will void certification and warranty.

Units are factory wired for a 230 volt power supply. If power supply is 208 volts, it will be necessary to change a wire connection on unit transformer from

240 volt terminal to 208 volt terminal as shown on the wiring diagram.

Usewiringwithatemperaturelimitation of 75 =C mini-

mum. Run the 208 or 230 volt, 60 hertz electric power supply through a fused disconnect switch to the control

box of the unit and connect as shown in the wiring dia- gram located onthe inside of the control access panel.

The unit must be electrically grounded in accordance with local codes or, in the absence of local codes, with the

National Electrical Code ANSI/NFPA No. 70 (latest edition) or CSA C22.2 Part 1 (latest edition).

is time/temperature initiated and temperature terminated

with a maximum defrost time (time-out) of 10 minutes.

Time between defrost cycles is preset at 60ominute

intervals at the factory, but can be field adjusted between

30, 60 or 90 minutes. To field adjust time between defrost cycles, place defrost time plug in the proper position (see

Figure 3). For best performance in Region IV, the PWC243 defrost interval should be adjusted to 30 min-

utes.

Power supply to the unit must be NEC Class 1 and must comply with all applicable codes. A fused disconnect switch should be field provided for the unit. The switch must be separate from all other circuits. If any of the wire supplied with the unit must be replaced, replacement wire must be of the type shown on the wiring diagram.

Electrical wiring must be sized to minimum circuit ampacity marked on the unit. Use copper conductors

only. Each unitmust be wired with a separate branch circuit and be properly fused.

OPERATION

Sequence of Operation

Cooling

When the thermostat is in the cooling mode, the O circuit

is powered which energizes the reversing valve. Upon cooling demand, the thermostat closes circuit R toY and

G. Closing R to Y closes the unit contactor, starting the compressor and outdoor fan. The thermostat automati- cally closes R to G circuit which also brings on the indoor

blower at the same time. Upon satisfying cooling demand, the thermostat will open the above circuits and open the

main contactor, stopping the compressor and outdoor fan.

If the unit is equipped with a time delay, the blower will

continue to operate for 90 seconds which improves

system efficiency.

Defrost controlwill initiate a defrost cycle ifthe time period

has elapsed and the defrost sensor sees a temperature

below freezing. At the start of a defrost cycle, the defrost

control will energize the reversing valve solenoid, shifting the reversing valve and de-energizing the outdoor fan.

The defrost relay will also close, energizing auxiliary heat for increased comfort during defrost. The unit will remain

in defrost mode until the defrost sensor has determined

that the frost has been removed from the coil or a 10-

minute time period has elapsed.

The defrost control is also equipped with a setof pins to

aid in troubleshooting of the defrost system (see Figure 3).

The following is a brief outline of the testing of the defrost

system.

. Defrost sensor must be closed, 32°F or below. If

temperatures are such that switch will not close,

jumper between defrost sensor terminals on the

defrost control,

2. Start system in heating operation.

Jumper test pins, A 1/4" quick connect terminal crimped onto a solid wire orbrazing rod works well for

test jumper. Closing test pins speeds up time interval by a factor of 256.

Defrost Control

Heating

Upon heating demand, the thermostat closes circuit R to

Y, which closes the unit contactor, starting the compressor

and outdoor fan. The reversing valve is not energized in

the heating mode. -The thermostat again automatically

brings on the indoor fan at the same time. The second

stage of the thermostat closes circuit R to W, which closes

the unit sequencers, bringing the auxiliary electric heat on.

Upon satisfying heating demand, the thermostat opens

the above circuits and stops unit operation.

Defrost Cycle

Ifthe outdoor ambient conditions are such that frost forms

on the outdoor coil, the defrost control monitors the need for and initiates and terminates defrost cycles as neces- sary to maintain system performance. The defrost control

Defrost

TestPins.,,,=i

Defro=/

TimePlug

Defrost Control Setting Defrost Test Cycle Time

30 minutes 7 seconds

60 minutes 14 seconds

90 minutes 21 seconds

FinHr

After closing test pins and appropriate cycle time has elapsed, the reversing valve should shiftto defrost mode and the outdoor fan should stop. After 2 seconds of

defrost operation, the reversing valve should shift back to

",tingoperation and the outdoor fan should start.

System Performance

For maximum performance of this heat pump system, the operating temperatures and pressures should be checked

and superheat determined at Standard ARI test conditions of 82°F outdoor - 80°F indoor dry bulb/67°F wet bulb. If superheat measured deviates from the values given in Table 3, refrigerant charge should be adjusted accordingly for maximum performance.

Motors

The indoor and outdoor fan motors are permanently

lubricated and require no maintenance.

Outdoor Coil

Foreign material should notbe allowed to accumulate on the outdoor coil surface or other parts in the air circuit.

Cleaning should be as often as necessary to keep the coil clean. Use a brush, vacuum cleaner attachment or other

suitable means. Be sure power to unit is shut off before using water to clean the coil.

Care should be used when cleaning the coils so that the coil fins are not damaged.

Suction Superheat

Outdoor

Unit

Model

PWC183 18° - 20° F PWC243 17° - 19° F

Suction Superheat

@ ARI Conditions

82 ° OD

80° IDDB/67 ° IDWB

Table 3

MAINTENANCE

Shutoff all electrical power to the unit before conducting any maintenance procedures. Failure to do so could cause personal injury.

Outdoor Base Drain

Foreign material should not be allowed to clogthe drain hole. inspect and clear drain opening priorto heating season.

Periodic inspection and maintenance normally consists of changing or cleaning filters and (under some conditions) cleaning the coils.

Filter

Inspect the filter once a month. Replace disposable filter

or clean the permanent-type filter as necessary (a mini-

mum ofthree times each heating or cooling season is recommended). Do not replace permanent-type filter with a disposable filter unless an installation was made in which the filter was mounted exterior to the unit (see Air

Filter section on page 4).

POWERSUPPLYWITHMIN.

208/230-1-60

75"CCOPPERWIRE

I CIRCUIT1I I (lo_cO_L'qCIRCUIT2I

•; ..; : :

P_D

BLACK

LOWER MOTORvloI_rr

UNE VOLTAGE-FACTORY UNE VOLTAGE-RELD

........ UNE VOLTAGE-RELD (IF USED)

LOW VOLTAGE-FACTORY

.......... LOWVOLTAGE-FIELD

BLUE

7 AND 10 PWC ONLY

BLOWER

(

NOTE:

IF ANY OF THE ORIGINAL WIRES ARE REP_, THE

SAME SIZE AND TYPE WIRE MUST BE USED.

CONNECTOR

CONDENSER FAN

BLACK

BROWN

RED

CAPACr_R-RUN

REV

VALVE

DEFROST

SENSOR

Connection Diagram

PWC with 5, 7 or 10 KW Heat Strip

Part #41164-3

Fin.r== 4

208/230-1-60

:OWER SUPPLY WITH MIN.

75"C COPPER WIRE

I CIRCUIT 1 I CIRCUIT 2

: i : :

: •

..... LINE VOLTAGE-RELD

UNE VOLTAGE-FACTORY

........ LINE VOLTAGE-FIELD (IF USED)

LOW VOLTAGE-FACTORY

.......... LOW VOLTAGE-R ELD

BLUE

NOTE:

IF ANY OF THE ORIGINAL

WIRES ARE REPLACED, THE SAME SIZE AND TYPE WIRE

MUST BE USED.

RED

UMrT

BLOWER

CAPACITOR-RUN

CONNECTOR

BLOCK

CONDENSER FAN

E_CK

RED

REV

VALVE

DEFROST

Connection Diagram

PWC with 15 KW Heat Strip

Part #42203-2

POWER SUPPLY WITH MIN.

208/230-1-60

75"C COPPER WIRE

BLOWER MOTOR

..... UNE VOLTAGE-FIELD

........ UNE VOLTAGE-FIELD (IF USED)

.......... LOWVOLTAGE-FIELD

NOTE:

LINE VOLTAGE-FACTORY

LOWVOLTAGE-FACTORY THERMOSTAT

IF ANY OF THE ORIGINAL WIRES ARE REPLACED, THE

SAME SIZE AND TYPE WIRE MUST BE USED.

BLOWER

CONDENSER FAN

_-RUN

I_)

RE)

RED

BROWN

: : °

, POTENTIAL

RELAY

pFUSe_

Connection Diagram

PWC with No Heat Strip

Part #45322-1

Fin-r== 6

Limited Warranty

August 1, 1997

Thiswarran(ygivesyou specificlegalrightsand you may have otherrights

which vary from state/provincetostate/province.

Warrantor: Armstrong Air Conditioning Inc., 421 Monroe St., Bellevue, OH 44811

Armstrong Air Conditioning Inc products are available under the following names: Air Ease, Armstrong Air, American Airs, Concord

Subject to the limitafions.stated in this warranty, we warrant to the first buyer for use the residential heating, cooling or heat pump unit, when installed, operated and maintained as required by this warranty, to be free of defects in workmanship or material for a pehod of five years (two years

for commercial equipment) from the time of installation. We will replace any defective component without cost or expense to you except for the costs of delivery and labor for removal and replacement of the defective component.

Warranty Begins

The warranty period begins when the installafion is complete and the product is ready to operate. You must be able to verity this date whenever a warranty claim is made. Original bill of sale, installer's invoice or other similar document will suffice..If the beginnir_g date cannot be Verified. we will

consider warranty coverage to begin six months after the date the product was shipped from our factory.

Limitations on Implied Warranties

Implied warranties of merchantability or, to the extent applicable, fitness for a particular purpose are timited to five years, the same duration as the basic limited written warranty provided herein. Some states/provincas do not allow limitations on how tong an implied warranty of merchantability or

fitness lasts, so the above limitations dr exclusions may not apply to you.

Only Warranty

This written Limited Warranty is the only warranty made by the warrantor; this warranty is in lieu of and excludes all other warranties, express or

implied. The warrantor does not authorize any person to provide any other warranty or to assume for it any further obligation in connection withthe

warranted product.

What is NOT Covered

I. Cabinets or cabinet pieces.

2. Normal maintenance items such as filters, fan belts, fuses or other consumable items. 3 Damage caused by misuse, failure to maintain properly, accidents or acts of God. 4 External wiring, piping, venting or attachment of accessory products not integral to our product, including without limitation, humidifier,

air cleaner, vent damper, thermostat or other mechanical devices not manufactured by the warrantor.

5 Products that have been operated in a corrosive atmosphere where e concentration of acids, halogenated hydrocarbons or other

corrosive elements causes deterioratfon to metsi surfaces or integral components. NOTE: Operation in a corrosive atmosphere is considered abuse and voids this warranty

6 Products that have NOT been installed in accordance with our published installation instructions, applicable focal, state/provincial or

national codes, ACCA published standards.

7 Products that have NOT been installed by competent, qualified installers. 8 Products that have been moved from their odginai place of installation.

Warranty on Replacement Components

Any replscement component furnished by us will assume the remaining (unused) portion of the Limited Warranty.

Consequential Damages

The warrantor shall not be responsible for any consequential damages caused by any defect in the product. Some state/provinces do not allow the

exclusion or limitations of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

NOTE: After the first year, in the event that a gas or oil heat exchanger is no longer being manufactured by the warrantor, the warrantor will allow a

credit equal to the then current wholesale price of an equivalent heat exchanger towards the purchase of a new Armstrong gas or oil furnace.

This product must be installed, used and cared for in accordance with the instructiott manual You are responsible for required pedodic maintenance or service, such as changing or cleaning of air filters and lubrication or cleaning of components. Failure to properly install, operate or maintain your

unit voids this warranty.

Model #

, INSTALLED BY:

Address Telephone #

I ealer

Owner Record

Serial # Installation Date

License #

INSTALLATION INSTRUCTIONS

Wall Sleeve Kit CA239

For Use With

HW/HWC/EWC/PWC Series

Magic-Pak Thru-the-Wall Unit

_WARNING

age_

General

Parts List

The wall sleeve isdesignedto facilitatethe installationof

Quantity Description

1 TopPanel 1 BottomPanel

1 Right Side Panel 1 LeftSide Panel

Magic-Pakunits by providingan accurateopeningduring buildingconstruction.The use ofa wall sleeveallowsunits toremain off-siteuntilbuildingconstructionapproaches

completion.

The wall sleeve iscomprisedof four assemblies (top,bottom,and rightand left sides) which easily slip

togetheron the job toform a rectangularbox correctly

sizedto receive a Magic-Pak unit.

2 Squaring Braces

1 TopSupportAngle

2 Side SupportAngles

24 #8 x 3/8" Screws

1 InstallationInstructions

Manufactured By

A.A.C.

A Lennox International Company

421 Monroe Street

Bellevue,OH 44811

Save these instructionsforfuture reference

When inplace and securely fastened, the wall sleeve openingprovideseasy access to the finishedwall pedm-

efarfor caulksealing.

The weather-seal caulkingiseasier to performwhen the sleeveprotrudesbeyondthe finishedwall by 3/8" to 1".

Inspection of Shipment Ifany damage tothe contentsof this kitis found at the

timeof delivery,propernotificationshouldbe made onthe carrier's freight bill.Damage claimsshouldbe filedwith

thecarrierat once. Claimsofshortage shouldbe filedwith the manufacturerwithin 5 days.

1111111Ill1111111111IllIllIIIIIIIIIRillIIIIIIII

INSTALLATION

Wall Sleeve Assembly

Toassemble the wall sleeve, refer to the followinginstruc- tionsand Figure 1.

Attachthe supportanglesto top and side panels usingthe #8 x 318"screwsprovided.Two sets of holes are providedin the panels for attaching the support

angles. Use the rowof holes nearest thefront of the sleeveto attach the support anglesfor 1"spacing or the secondset of holesfor 3-3/4" spacing.

1. Slidetop panel over side panels untilretaining clips

are engaged in slottedopenings.

Place side and top assemblydown withthe front

flange againstfloorand slide bottom panel intoside

panelslip strips untiltabs on bottom panels are locked inplace.

3. Attach squaring bracesto top and side panels using

existingholes. (Do not remove braces untilwall sleeve issecured to building.)

Wall Sleeve Assembly

P/N33021B000

Frontof

TopPanel

The wall sleeve must be square in opening before securing sleeve to building. This is requiredto

assure the Magic-Pak unitwill slide intothe sleeve.

Caulk all seams where the bottompaneljoins tothe side panels includingthefront corners ofthe bottom

panel and the top of side panel slipjoints.Caulk sealing is bestaccomplishedafterthe wall sleeve is

assembledbutbefore Risplaced inthe wall opening. Remainingfinalcaulk sealing can be done just after

the sleeve issecured intothe wall opening, if desired, to avoidbreakingthe seal duringhandling.

RightSide Panel P/N 33024B002-

Side SupportAngle PIN 33027BG00- 2 Side=

Squaring

Braces

P/N33048B000

Figure I

LeftSide Panel P/N 33024B001

Furthersealing againstair infiltrationmustbe done alter the Magic-Pak unitis installedin the wall sleeve and utility

connectionshavebeen completed (see Sealing/Weath-

erproofing Wall Sleeves section).

sleeveopening. However,if the wall openingcan be larger

inverticaldimensionthan the wall sleeve sothat the bottomcan rest ona sill that isat least 2" higher thanthe bottomof thewall opening,some recessing is permitted.

Wall Sleeve Installation

The wall sleeve may be installedfrom either the insideor outsideofthe building.

Some builderswillattach the wall sleeve to the support wallthroughthe side supportangleswhether they are

insertingthesleeve fromthe outsideor the inside.Othem willuse the side angles simplyas a locating"stop"to achievethe appropriatedimensionwhileshootingfasten- ersthroughthe sides ofthe wallsleeve intothesupporting wall.In either case,the wall sleeve must be fastened to

the supporting wall and notto thefinishedwall.

The sleeve may extend farther than 1"beyondthe finished wall,but reachingtheperimeter ofthe openingfrom inside

for sealing becomes increasinglydifficult.In any case, adequate safety precautionsmust beconsideredto

protectpersonnel.

Instailing Wall Sleeve from Inside

The most popular method of installingthe wallsleeve is from the inside of the buildingwiththe weather seal

appliedfrom the outsideas the finishwall is applied.

Instalflng Wall Sleeve from Outside

Thissillshouldbe recessed further than the sleeve by3/8"

to 1"to permitweather-seal caulking along the bottom

edge withoutpluggingthe drain holes in the sleeve.

The topof the wall opening shouldbe above the topof the

wall sleevebya dimensionequal to or greater than the

amountof the recess in orderto avoid restrictionof the condenserdischargeair.

Sealing/Weatherproofing Wall Sleeves

A highgrade non-hardeningcaulkingcompoundapproved forexterioruse mustbe appliedoutsidearoundthe

perimeterofthe wall sleeveand the finishedwall. Caulk shouldalso beapplied around the sleeve's perimeter and

thefinishedinteriorwall.

Final sealingagainst air infiltrationmust be donealter the Magic-Pakunit is installedin thewall sleeve. For additional

protection,the space between the unit and the wall sleeve shouldbe sealed on all sideswith a bead of sealant.

Wall Sleeve Dimensions (in.)

<.. 1or 3_/4

In manyhigh-rise constructionapplications,contractors insertthe wall sleevesfrom the outsidewhilethewall is

beingconstructed.The two-sidedsupport anglesshould then be attached to the wall sleeve sides at a locationthat

willexceed the thicknessofthe outsidefinish wall bythe

recommended3/8" to 1"dimension.

Forexample, ifthe supportingwall isconcreteblockwith a brickfacing, there is usuallya space betweenthe block and the brick.This space dimensionmust be addedto the widthof the brick (plus3/8" to 1") so thatwhen the sleeve

is inserted intothe blockwall opening, up to the angles and fastened to the blockwallbefore the brickisinstalled,

the sleevewilt protrudebeyondthe finishedbrickby 3/8" to 1",as needed for caulk sealing.

The same applies if the supportingwall iswoodframe.

One may insertthe sleevefromthe outside upto the angleslocated on each side,allowingforthe thicknessof sheathing,finishsiding,and caulk sealing.

Recessed Sleeves

In someapplications,where either the buildingwallsare verythick(over 16") or architecturaldesign dictates,units

can berecessed. Avoidrecessingthewall sleeve ifthe wallopening is requiredto be the same size as the wall

2--I=

I.---- z9- -,4

Flar_es may b_ assembl_l

1"or 5_/4"from this e_e ofthe elc_v_

Figure 2

-$--

_t._

.16,.._15 or 12_

+ 28 hidden pages

Armstrong PWC18E9.2-1, PWC18E7.2-1 Owner’s Manual

Specifications and Main Features

Frequently Asked Questions

User Manual