LENNOX Package Units(both Units Combined) Manual L0806711

User Manual: LENNOX LENNOX Package Units(both units combined) Manual LENNOX Package Units(both units combined) Owner's Manual, LENNOX Package Units(both units combined) installation guides

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I STALLATIO AN

NTENANC iNSTRUCTiONS

(2,4)SA13

lectric Coolin

Series

Package Unit

TABLE OF CONTENTS

iNSTALLATiON ...................................... 2

OPERATION .......................................... 7

MAINTENANCE ..................................... 8

WiRiNG DIAGRAM ................................ 9

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

Manufactured By

A.A.C.

A Lennox International Inc. Company

421 Monroe Street

Bellevue, OH 44811

[A, CAUTION I

The installation of this appliance must conform to the requirements of the National Fire Protection Association;

the National Electrical Code, ANSI/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 ordinances. Local

authorities having jurisdiction should be consulted before installation is made. Such applicable regulations or

requirements take precedence over the general instructions in this manual.

# 48392M005 Save these instructionsfor future reference Page 1

INSTALLATION

These instructions,and any instructions packaged with

mating components and/or accessories, should be care-

fully read prior to beginning installation. Note particularly

any CAUTIONS or WARNINGS in these instructionsand

all labels on the units.

These instructionsare intended as a general guide only, for

use by qualified personnel and do not supersede any national

or local codes inany way. Compliance with all local, state,

provincial, or national codes pertaining to this type of

equipment should be determined prior to installation.

These instructions explain the recommended method of

installation of the SA electric cooling unit and associated

electrical wi ring.

The SA unit is designed and approved for use as a self-

contained air-to-ai r air conditioning system.

The unit is factory equipped with a transformer and blower

control for applications without auxiliary heat. An electric

heat accessory kit (PHK) can be ordered for field installa-

tion of additional heat where required.

IMPORTANT: This product has been designed and manufac-

tured to meet ENERGY STAR criteria for energy efficiency.

However, proper refrigerant charge and proper air flow are

critical to achieve rated capacity and efficiency. Installation

of this product should follow the manufacturer's refrigerant

charging and air flow instructions.Failure to confirm

proper charge and airflow may reduce energy effi-

ciency and shorten equipment life.

inspection of Shipment

Upon receipt of equipment, carefully inspect it for possible

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

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

unit inside the carton if the carton is damaged. File a claim

with 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 plate to confirm specifications

are as ordered.

Limitations

The unit should be installed inaccordance 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.

Location

The unit is designed to be located outdoors with sufficient

clearance for free entrance to the air inlet and discharge air

openings. The location must also allow for adequate

service access.

The unit must be installed on a solid foundation that will

not settle or shift. Adequate structural support must be

provided. Maintain minimum clearances as shown inTable

1 and install the unit in level position, isolate the base from

the building structure to avoid possible transmission of

sound or vibration into the conditioned space.

Minimum Clearance Requirements

Front 0" 48" 3"

3"

Rear .0". 24'

Condenser 0" 24" 3"

End

Top 0" 36" 36"

Table 1

Avoid placing the unit near quiet areas such as

sleeping quarters or study rooms. Normal operating

sound levels may be objectionable if the unit is placed

near certain rooms.

Do not permit overhanging structures or shrubs to

obstruct condenser air discharge inlet or outlet.

For improved start-up performance, the indoor coil

should be washed with suitable detergent to remove

any residue from manufacturing processes.

Exercise care when moving the unit. Do not remove any

packaging until the unit is near the place of installation. An

accessory lift kit can be purchased to aid in rigging (see

Figure 1). Spreaders whose length exceed the largest

dimension across the unit must be used across the top

of the unit. Recommended spreader length: 3ton and smaller

package units - 44", 3.5 ton and larger units - 54".

Page 2 # 48392M005

Using Accessory Lift Kit

Spreaders

(Field Supplied)

To avoid possible

damage to unit

panels from lifting

clevis, place

packing material

between clevis

and panels before

lifting unit,

Figure 1

Units may also be moved or lifted with a forklift while still

in the factory-supplied packaging. The lengths of the

forks of the forklift must be a minimum of 42".

Roof Curb Installation

If a roof curb is used, follow the manufacturer's Installation

Instructions and be sure that all required clearances are

observed (see following Clearances section).

Roof Curb Assembly

Figure 2

Clearances

All units require certain clearances for proper operation and

service. Refer to Table 1 for the minimum clearances to

combustibles as well as minimum clearances necessary

for servicing and proper unit operation.

In the U.S., units may be installed on combustible floors

made from wood or class A, B, or C roof covering material.

In Canada, units may be installed on combustible floors.

Service Access

Access to all serviceable components is provided by four

removable panels: filter compartment, blower compart-

ment, heater compartment, and top panel.

Condensate Drain

The SA package unit is equipped with a 3/4" FPT coupling

for condensate line connection. Plumbing must conform to

local codes. Use a sealing compound on male pipe threads.

The condensate drain line must be properly trapped

and routed to a suitable drain. See Figure 3 for proper

drain arrangement. The drain line must pitch to an open

drain or pump to prevent clogging of the line. Seal around

the drain connection with suitable material to prevent air

leakage into the return air system.

Typical Condensate Drain Connection

Unit /-- Drain Connection

/1.00" Min.

t2.oo -

'- Max. °' _\

Positive Liquid Seal Required _

Figure 3

Ductwork

Ductwork should be designed and sized according to the

methods in Manual Q of the Air Conditioning Contractors of

America (ACCA).

A closed return duct system shall be used. This shall not

preclude use of economizers or outdoor fresh air intake. It

is recommended that supply and return duct connections

at the unit be made with flexible joints.

# 48392M005 Page 3

Thesupplyandreturnairductsystemsshouldbede-

signedfortheCFMandstaticrequirementsofthejob.

They should not be sized by matching the dimensions

of the duct connections on the unit.

Outdoor ductwork must be insulated and waterproofed.

Equipment is shipped for side ductwork connection. The

unit can be converted to bottom ductwork connection by

removing the duct covers located over the bottom duct

openings and placing these covers over the side duct

openings (see Figure 4).

To remove the bottom duct cover over supply opening:

1. Remove screw on cover nearest side opening.

2. Lift end of cover slightly and push to slide back screw/

pin free from duct flange.

3. Slide duct cover out the side duct opening.

Removing Bottom Duct Covers

®

41111

1. Remove screw and lift.

2. Slide cover to free back pin.

(D

Base_

J

Figure 4

airflow of the unit. Filters should be sized in accordance

with Table 2.

Minimum Required Surface Area

for Disposable Filters

24,000 2.67

36,000 4.00

42,000 .4.67

48,000 5.33

Table 2

Electrical Wiring

Filters

Air filters are to be used with this heating/cooling unit.

Filters are not factory supplied in the unit. However, a

filter frame accessory is available from the manufac-

turer that allows filters to be installed within the unit.

If the filter frame accessory is not used, a filter must be

installed in the duct work by the installer. Filters must

always be installed ahead of the evaporator coil and must

be kept clean or replaced. Dirty filters will reduce the

All wiring should be done in accordance with the

National Electrical Code, ANSI/NFPA No. 70 (latest

edition); Canadian Electrical Code Part 1, CSA C22.1

(latest edition); or local codes where they prevail. Use

wiring with a temperature limitation of 75°C minimum. Run

the 208 or 230 volt, 60 hertz electric power supply through

a fused disconnect switch to the connection box of the unit

and connect as shown in the wiring diagram located on the

inside of the control access panel.

Page 4 # 48392M005

Powersupplytotheunitmustcomplywithallapplicable

codesandtheNationalElecticalCode(NEC)orCanadian

ElectricalCode(CEC).Afuseddisconnectswitchshouldbe

fieldprovidedfortheunit.Theswitchmustbeseparatefrom

allothercircuits.

Ifanyofthewiresuppliedwiththeunitmustbereplaced,

replacementwiremustbeofthetypeshownonthewiring

diagram.Electricalwiringmustbesizedtocarryminimum

circuitampacitymarkedontheunit.Usecopperconduc-

torsonly.Eachunitmustbewiredwithaseparatebranch

circuitandbeproperlyfused.

Electrical Access

Heater Power

Thermostat _Q_

Entry

Line Voltage

Entry

Figure 5

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

Typical Wiring Connections

ECONOMIZER

NOT

INSTALLED

THERMOSTAT

E_------

[]

[_------

[_-- -- --

[_----

_CAUTION

Do not connect [CJeonnections except when

required by the indoor thermostat. Refer to the

thermostat installation instructions.

@

OUTDOOR UNIT

-----[]

[]

-----[_

(_ _'GROUND

ISCREW

POWER WIRING

208/230=1-60

(gO°C MIN. WIRE)

POWER WIRING

24V CONTROL WIRING

(NED CLASS 2)

* W1, W2 CAN BE USED TO STAGE ELECTRIC

HEAT ACCESSORY ON 15 & 20 KW MODELS.

* 5 & 10 KW HEATER ACCESSORY FUNCTION

OFFW1 ONLY.

TYPICAL WIRING CONNECTI©N

1 PHASE

THERMOSTAT

E_------

[]

[_-- ----

[_----

@

OUTDOOR UNIT ECONOMIZER

-----[]

] BLUE

WHITE

] YELLOW

- -- -- [_ GREEN

- -- --d_--- BLACK

GROUND

SCREW

POWER WIRING

200/230-3-60, 460/575-3=60

(90°C MIN.WIRE)

POWER WIRING ............

24V CONTROL WIRING

(NED CLASS 2)

Wl, W2 CAN BE USED TO STAGE ELECTRIC

HEAT ACCESSORY ON 15 & 20 KW MODELS.

10 KW HEATER ACCESSORY FUNCTION OFF

Wl ONLY.

TYPICAL WIRING CONNECTION

3 PHASE

AOAUTION

Do not connect [CJconnections except when

required by the indoor thermostat. Refer to the

thermostat installation instructions.

Figure 6

# 48392M005 Page 5

manufacturer'sinstructionsenclosedwiththermostatfor

generalinstallationprocedure.Color-codedinsulatedwires

(#18AWG)shouldbeusedtoconnectthermostattounit.

Fourwiresarerequiredforcooling.

Compressor

Units are shipped with compressor mountings factory-

adjusted and ready for operation. Caution: Do not loosen

compressor mounting bolts.

Heater Kit Accessory (if used)

The unit is fully equipped for cooling operation without

auxiliary heat. A heater kit accessory may also be used.

To install the heater kit accessory (see Figure 7):

1. Disconnectthe powerand remove the heatercompart-

ment access panel.

2. Disconnect the plug separating the high voltage wire

harness. Remove the high voltage wire harness plug

and discard.

3. Remove the heater blockoff by removing the four

screws holding it in place.

4. insert the heater into the control panel and fasten in

the same mounting holes.

Plug the heater wiring harness into the wire harness on

the control assembly. Field wiring of the auxiliary

heater is separate from the unit power supply. Wire the

power supply wiring for the heater to the appropriate

connections on the heater kit.

6. Replace the heater compartment access panel and

reconnect the power.

Removal of Unit from Common Venting System

When an existing indoor furnace is removed from a common

venting system serving other appliances, the venting system

is likely to be too large to properly vent the remaining at-

tached appliances. The following test should be conducted

with each appliance while the other appliances connected to

the common venting system are not in operation.

1. Seal any unused openings in the common venting

system.

2. Visually inspect the venting system for proper size

and horizontal pitch and determine there is no block-

age or restriction, leakage, corrosion, or other deficien-

cies which could cause an unsafe condition.

3. insofar as is practical, close all building doors and

windows between the space in which the appliances

remaining connected to the common venting system

Heater Kit Accessory Installation

IHeater _!_i

Blockoff

, =

ent

Panel

Heater Kit

Figure 7

are located and other spaces in the building. Turn on

clothes dryers and any appliance not connected to the

common venting system. Turn on exhaust fans, such

as range hoods and bathroom exhausts, so they will

operate at maximum speed. Do not operate a summer

exhaust fan. Close fireplace dampers.

4. Following the lighting instructions, place the unit being

inspected in operation. Adjust the thermostat so the

appliance will operate continuously.

5. Test for spillage at the draft control relief opening after

5 minutes of main burner operation. Use the flame of a

match or candle.

6. Follow the preceding steps for each appliance con-

nected to the common venting system.

7. After it has been determined that each appliance

remaining connected to the common venting system

properly vents when tested as outlined above, return

doors, windows, exhaust fans, fireplace dampers, and

any other fuel burning appliance to their previous

condition of use.

8. If improper venting is observed during any of the

above tests, the common venting system must be

corrected. See National Fuel Gas Code, ANSI

Z223.1 (latest edition)or CAN/CGA B149.1 & .2

Canadian installation Codes to correct improper

operation of common venting system.

Page 6 # 48392M005

OPERATION

Sequence of Operation

CooHng

Upon cooling demand, the thermostat closes circuit R and Y.

Closing R and Y closes the unit contactor, starting the

compressor and outdoor fan.The thermostat automatically

closes R to G circuit which also brings on the indoor blower at

the same time. Upon satisfying cooling demand, the thermo-

stat will open the above circuits and open the main contactor,

stopping the compressor and outdoor fan. (f the un(t is

equipped with a delay timer, the blower will continue to

operate for 90 seconds wh(ch improves system efficiency.

Circulating Air Blower

The circulating air blower is controlled by a timing circuit in the

blower control. Timings are not adjustable.

There is no blower "on" delay after a call for heating or

cooling. Blower "off" delay is 90 seconds after the thermo-

stat is satisfied.

Cooling System Performance

For maximum performance of the cooling system, operat-

ing temperatures and pressure should be checked. Super-

heat should be determined at Standard AR( test conditions

of 82°F outdoor and 80°F indoor dry bulb/67°F wet bulb. (f

superheat measured deviates from values found in Table 3,

refrigerant charge should be adjusted accordingly for

maximum performance.

Suction Superheat

22°

20°

15°

12°

48,60 20° 10°

Table 3

# 48392M005 Page 7

MAINTENANCE

Owner Record

Model #

Serial #

Installation Date

Installed by:

Dealer

Address

Telephone #

License #

At the beginning of each heating season, system should

be checked as follows by a qualified service technician:

Periodic inspection and maintenance normally consists of

changing or cleaning the filters and cleaning the outdoor coil.

On occasion, other components may also require cleaning.

Filters

Filters should be checked at least every 6 weeks. Dispos-

able filters should be replaced when dirty, and cleanable

filters should be cleaned regularly. It is important to keep

the air filters clean, as dirty filters can restrict airflow and

the blower motor depends upon sufficient air flowing

across and through it to keep from overheating.

Motors

indoor and outdoor fan and vent motors are permanently

lubricated and require no maintenance.

Outdoor Coil

Dirt and debris should not be allowed to accumulate on the

outdoor coil surface or other parts in the air circuit. Clean-

ing should be as often as necessary to keep coil clean.

Use a brush, vacuum cleaner attachment, or other suitable

means. If water is used to clean the coil, be sure the power

to unit is shut off prior to cleaning. Care should be used

when cleaning the coil so that the coil fins are not

damaged.

Do not permit the hot condenser air discharge to be

obstructed by overhanging structures or shrubs.

Page 8 # 48392M005

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