LENNOX Package Units(both Units Combined) Manual L0806665

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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INSTALLATION
INSTRUCTIONS

,t,: 2005 Lennox industries inc.
Dallas, Texas, USA

13GCSX SERIES UNITS
GAS PACKAGED UNITS (2-5 TONS)
505,057M
(38152A067)
08/05
Supersedes 06/05

F_
Technical
_L.LLPublications
Lithe U.S.A.

Unit Dimensions ...............................
Parts Arrangement .............................
Shipping & Packing List .........................
General .......................................
Safety Information ..............................
Location Selection ..............................
Rigging & Setting Unit ..........................
Clearances ....................................
Installing Vent Hood ............................
Existing Common Vent Systems ..................
Condensate Drain ..............................
Filters .........................................
Supply & Return Connections ....................
Compressors ..................................
Gas Supply and Piping ..........................
Electrical .....................................
Blower Speed Settings .........................
Cooling Start-Up ..............................
Heating Start-up ..............................
Unit Controls .................................
Condenser Fan Clearances .....................
Maintenance ..................................
Repair Parts & Accessories .....................

RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE

-&WARNING

2
3
3
3
3
4
5
5
6
6
7
7
7
8
8
10
12
13
14
15
16
17
17

GAS-FIRED

c( )0s
LISTED
Do not store or use gasoline or other
flammable
vapors and liquids in the
vicinity
of this or any other appliance.
Installation
and service
must be
performed
by a qualified installer,
service agency or the gas supplier.

WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Leave the building immediately.
• Immediately
call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the fire department.

505,057M

08/05

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

Page 1

IIIlllllllllllllllllllllllllllll]lll

L 6S'1G÷

(

_ 2-1/2 (64)

SUPPLY AIR
/ OP

(70)
--I_
DOWN-FLOW
RETURN AIR
OPENING

Model
Number

in.
C

13GCSXA-24

125

15.5

28.5

13GCSXA-30

125

15.5

28.5

13GCSXA-36

101

126

105

29.5

13GCSXA-42

108

136

176

140

13GCSXA-48

112

137

177

144

33.5

13GCSXA-60

117

143

184

151

33.5

F
u

Center Of
Gravity
FF

Corner Weights

TOP VIEW
9

HORIZONTAL
SUPPLY AIR
OPENING

FRONT VIEW

'_--E---_
D_T

2-3/4 _,
(70)

_, 2-3/4
(70)
j I_D.

--D.K _

--'t
GAS PIPING INLET "'".

HORIZONTAL
RETURN AIR
OPENING

'4-4-1/4

BACK

(108)

VIEW

3-1/4 (83)

FLUE
OUTLET
ELECTRICAL INLET

_.--- L---_
2-I/2(64)_i

CONDENSATE

END VIEW

DRAIN

END VIEW
A
Model No.

in.

13GCSXAV-24
13GCSXAV-30
13GCSXAV-36

34-1/4

870

65-3/8

1661

36-1/2

927

11-1/4

286

17-1/4

438

508

13GCSXAV-42
13GCSXAV-48
13GCSXAV-60

38-1/4

972

1905

1168

11-1/4

286

19-1/4

489

559

F
Model No.

in.

13GCSXAV-24
13GCSXAV-30
13GCSXAV-36

508

8-1/2

216

20-1/4

514

4-1/2

114

483

13GCSXAV-42
13GCSXAV-48
13GCSXAV-60

559

9-1/4

241

3-1/4

22-1/4

572

102

16-1/4

413

Page 2

COIL

BLOWER MOTOR
GAS

FAN
CONTROL
SECTION
PRESSURE

COIL

AIR INDUCER
BURNER
GAS

installation. In addition, the heating vent hood must be
installed before the unit is placed into operation

1 - Assembled gas package unit
1 - Vent hood assembly with screen and screws
As soon as the unit is received, it should be inspected for
possible damage during transit, If you find any damage,
immediately contact the last carrier,

WARNING

These installation instructions are intended as a general
guide only, for use by an experienced, qualified contractor.
The 13GCSX units are single-package air conditioners
designed for outdoor installation on a rooftop or a slab,

These units must be installed

The unit must be sized based on heat loss and heat gain

applicable national and local safety codes.

calculations made according to the methods of the Air
Conditioning Contractors of America (ACCA).

These instructions are intended as a general guide and do
not supersede local codes in any way, Consult authorities
having jurisdiction before installation.

The units are shipped assembled. All piping, refrigerant
charge, and electrical wiring are factory-installed and
tested. The units require electric power, gas piping,
condensate drain and duct connections at the point of

in accordance

with all

If components are to be added to a unit to meet local codes,
they are to be installed at the dealer's and/or customer's
expense,

Page 3

13GCSX units may be used for heating of buildings or
structures under construction, if the following conditions
are met:

A, WARNING

• The vent hood must be installed per these installation instructions.
• A room thermostat must control the unit. The use of
fixed jumpers that will provide continuous heating is not
allowed.
• The return air duct must be provided and sealed to the
unit.
• Return air temperature range between 60°F (16°C) and
80°F (27°C) must be maintained.
• Air filters must be installed in the system and must be
maintained during construction.
• Air filters must be replaced upon construction completion.
• The input rate and temperature rise must be set per the
unit rating plate.

These units are design listed by UL in both the United
States and Canada as follows:
•

For use as a forced air furnace with cooling,

•
•

For outdoor installation only.
For installation on combustible material.

• One hundred percent (100%) outdoor air must be provided for combustion air requirements during construction. Installation of this unit in its intended outdoor location will accompfish this.
• The heat exchanger, components, duct system, air filters and evaporator coil must be thoroughly cleaned following final construction clean-up.

•

For use with natural gas or L,P./propane gas only. Use
of LP./propane gas requires installation of an LP, conversion kit, which must be ordered separately,
These units are not suitable for use with conventional

• The unit operating conditions (including ignition, input
rate, temperature rise and venting) must be verified according to these instaflation instructions.

venting systems.
The following safety requirements must also be met when
the 13GCSX units are installed:

NOTE - The Commonwealth of Massachusetts
lates these additional requirements:

stipu-

1 - Use only with the type of fuel approved for use with this
appliance. Refer to the unit rating plate.

• Gas furnaces shall be installed by a licensed plumber or gas fitter only.

2 - Position, locate and install the 13GCSX unit only as
outlined in these instructions,

• The gas cock must be "T handle" type.
• When flexible connectors are used, the maximum
length shall not exceed 36".

3 - Provide adequate clearance around the vent hood as
specified in these instructions.
4 - Do not use an open flame to check for gas leaks. Use a
commercially available soap solution, which has been
designed specifically to check for gas leaks, Refer to
the Gas Supply and Piping section,

Use the following guidelines to select a suitable location for
these units.

5 - Check the unit operation after start-up to make sure
that the 13GCSX is operating within the intended temperature rise range. The duct system must be designed to provide an external static pressure within the
allowable range, Refer to the unit rating plate.
Lennox does not recommend the use of 13GCSX units as a

2 - Condenser coils must have an unlimited supply of air.

construction heater during any phase of construction. Very
low return air temperatures, harmful vapors and operation
of the unit with clogged or misplaced filters will damage the
unit,

1 - Unit is designed for outdoor installation only. Unit must
be installed so all electrical components are protected
from water.
3 - For ground level installation, use a level pre-fabricated
pad or use a level concrete slab with a minimum thickness of 4 inches. The length and width should be at
least 6 inches greater than the unit base. Do not tie the
slab to the building foundation.
4 - Maintain level within a tolerance of 1/4 inch maximum

Page 4

across the entire length or width of the unit.

5 - Donotlocatetheunitwherethecombustion
airsupply
willbeexposedtoanycorrosivesubstance,
including
thefollowing:
Permanent
wavesolutions,
Chlorinated
waxesor cleaners,
Chlorine-based
swimmingpoolchemicals,
Water-softening
chemicals,
De-icingsaltsorchemicals,
Carbontetrachloride,
Halogen-type
refrigerants,
Cleaningsolvents(e.g.,perchloroethylene),
Printinginks,paintremovers,
varnishes,etc.,
Cementsandglues,
Anti-staticfabricsoftenersusedinclothesdryers,
Masonryacid-washing
materials,
Chlorinated
laundryproducts,
Hydrochloric
acid.

Exercisecarewhenmovingtheunit.Donotremoveany
packaging
untiltheunitisneartheplaceofinstallation.
An
optionallifting lug kit (92M51)may be purchased
separately
foruseinriggingtheunitforlifting.Spreaders
whoselengthexceedsthe largestdimensionacrossthe
unitMUSTbeusedacrossthetopof theunit.

All units require certain clearances for proper operation
and service. Refer to figure 2 for the clearances required
for combustible construction, servicing, and proper unit
operation.
NOTE - Do not permit overhanging structures or shrubs to
obstruct condenser air discharge outlet or vent outleL
Service Clearances

36 (914)

48 (1219)

NOTE - Top Clearance
- 36 in. (914 mm)
NOTE - Entire perimeter
of unit base requires
support when elevated above mounting
surface.

Figure 2
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.

CAUTION

The products of combustion are discharged
screened vent outlet in the front mullion.

Accessory

through a

Install the unit so that the products of combustion will not
damage the outer building structure.

Lift Kit

The vent outlet must be at least 4 feet below, 4 feet
horizontally from and 1 foot above any door, window or
gravity air inlet into the building. In addition, install the unit
so that the vent outlet is at least 3 feet above any forced air
inlet located within 10 feet.
Clearances to the vent outlet must also be consistent with
the requirements of the current National Fuel Gas Code
(Z223.1) and/or the standards of the current CSA B149
codes.
Figure 3 shows the minimum clearances to combustibles
required above and below the vent hood. The minimum
clearance in front of the vent hood is 24 inches.
Install the unit so that snow accumulation will not restric the

Figure

flow of the flue products. Allow a required minimum
horizontal clearance of 4 feet from electric meters, gas
meters, regulators and relief equipment. In addtion to the
above requirements, ensure that unwanted ice caused by
condensate is not allowed to accumulate around the unit.

Units may also be moved or lifted with a forklift while still in
the factory supplied packaging.
NOTE - Length of forks must be a minimum of 42 inches.
Page

Do not locate the unit on the side of the building where the
prevailing winter winds could trap moisture, causing it to
freeze on the walls or on overhangs (under eaves). The

vent outlet shouldnot dischargeflue productson a
sidewalk,patioor otherwalkwaywherethe condensate
couldcausethesurfacetobecomeslippery.
Do not install the unit so that the products of
combustionwill be allowedto accumulatewithin a
confinedspaceandrecirculate.
Minimum Clearances to Combustible Materials
Above and Below Vent Hood
Minimum Clearance
Above Vent Hood:
Distance from Top
of Vent
Hood
to Top of Unit

through the sides of the screen in order to hold the
screen in place.
The vent hood must be installed

prior to unit start-up.

The 13GCSX packaged unit may replace an existing furnace which is being removed from a venting system commonly run with separate gas appliances. In this case, the
existing vent system is likely to be too large to properly
vent the remaining attached appliances.
Conduct the following test while each appliance is operating and the other appliances (which are not operating) remain connected to the common venting system. If the
venting system has been installed improperly, you must
correct the system as indicated in the general venting requirements section.

Minimum Clearance
Below Vent Hood:
Distance from Bottom
of Vent Hood to Base
of Unit

1 - Seal any unused openings in the common venting system.
2 - Inspect the venting system for proper size and horizontal
pitch. Determine that there is no blockage, restriction,
leakage, corrosion, or other deficiencies which could
cause an unsafe condition.

The vent hood, screen and screws are shipped inside the
unit in the plastic bag which contains the installation
instructions.

3 - Close all building doors and windows and all doors between the space in which the appliances remaining
connected to the common venting system are located
and other spaces of the building. Turn on clothes dryers and any appliances not connected to the common
venting system. Turn on any 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.

1 - Insert the vent screen into the vent tube Once inserted, the screen should be flush with the end of the
tube as shown in figure 4.

4 - Follow the lighting instructions. Turn on the appliance
that is being inspected. Adjust the thermostat so that
the appliance operates continuously.

Figure

5 - After the main burner has operated for 5 minutes, test
for leaks of flue gases at the draft hood relief opening.
Use the flame of a match or candle, or smoke from a
cigarette, cigar, or pipe.

Vent Hood Installation
Front

View

Top

View

_Vent

Vent
Screen

Tube

is pre-formed

Vent Hood

Slotted

Tube

6 - After determining that each appliance connected to the
common venting system is venting properly, (step 3)
return all doors, widows, exhaust fans, fireplace dampers, and any other gas-burning appliances to their previous mode of operation.

NOTE Screws
should pass
through

sides of
screen to
hold screen

7 - If a venting problem is found during any of the preceding tests, the common venting system must be modified to correct the problem.

side of

vent hood faces
condenser coil.

_'_

Resize the common venting system to the minimum
vent pipe size determined by using the appropriate
tables in Appendix G. (These are in the current standards
of
the
National
Fuel
Gas
Code

in place.

Figure 4
2 - Position the vent hood over the vent tube so that the
slotted side of the hood faces the condenser coil. Use
the four sheet metal screws (provided) to secure the
vent hood to the vent tube. The screws should pass
Page 6

ANSFZ223.1/NFPA 54 in the USA, and the appropriate Category 1 Natural Gas and Propane appliances
venting sizing tables in the current standards of the
CSA B149 Natural Gas and Propane
Codes in Canada.)

Installation

The13GCSX
unitisequipped
witha 3/4inchFPTcoupling
forcondensate
lineconnection.
Plumbing
mustconformto
local codes.Use a sealingcompoundon malepipe
threads.
Thedrainlinemustbe properlytrappedandroutedtoa
suitabledrain.Seefigure5 forproperdrainarrangement.
Thedrain line mustpitchto an opendrainor pumpa
minimumof 1 inchper10feetto preventcloggingofthe
line.Sealarounddrainconnection
withsuitablematerialto
preventairleakageintoreturnairsystem.
Drainpipingshouldnotbesmallerthandrainconnection
at
coil.Anopenventindrainlinewillsometimesberequired
dueto line length,frictionand staticpressure.Drains
shouldbeconstructed
ina mannertofacilitate
futurecleaning.
NOTE - The condensate

drain line MUST be trapped to

provide proper drainage.

CAUTION

Typical Condensate

is used with 3-1/2, 4 and 5-ton units. The filter kits
accommodate the use of 1", 2" or 4" filters. If the optional
filter kit is not used, a filter must be field-installed,
Filters must always be installed ahead of evaporator coil
and must be kept clean or replaced, Dirty filters will reduce
the airflow of the unit, Filter sizes are shown in table 1.
Table 1
Unit Filter Size
Unit Model
-24, -30, -36
-42, -48, -60

Filter Size
20 in. X 25 in.
16 in. X 25 in.

Filter Quantity
1
2

The duct system should be designed and sized accordin(
to the methods in Manual Q of the Air Conditionin(
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.
The supply and return air duct systems should be designed
for the CFM and static requirements of the job. They
should NOT be sized by simply matching the
dimensions of the duct connections on the unit.

Drain

Minimum Pitch
1 in. (25 ram) per
10' (3 m) of line

CAUTION

unit
open
vent

The 13GCSX unit is shipped ready for horizontal air
discharge (side duct connections). If bottom air discharge
is desired, the covers must be removed from the supply
and return air openings on the bottom of the unit and
re-installed to cover the side openings.
Removing Supply and Return
Air Opening Covers

Trap must be deep enough to offset maximum
static difference (Generally, 3 inches minimum).

Figure

mounting
frame

5
1. Remove screw and lift.
2. Slide cover to free back pin.

Filters are not factory-supplied with the unit; however,
optional internally installed filter kits are available. Filter kit
92M54 is used with 2, 2-1/2 and 3-ton units. Filter kit 92M55

Page 7

Figure

Base-_

Units are shippedwith the compressormountings
factory-adjusted
andreadyforoperation.

CAUTION

use supply pipe smaller than unit gas connection. For
natural gas unit, supply pressure at the unit gas connection must be a minimum of 5 inches w,c, and a maximum
of 10.5 w.c. For LP/propane gas units, supply pressure
at the unit gas connection must be a minimum of 11 inchesw.c, and a maximum of 13,0 inches w,c,
Table 3
Gas Pipe Capacity-FT

3 / HR

Nominal Iron Pipe Size (inches)
Length

Check the unit rating plate to confirm whether unit is
equipped for use with natural gas or LP/propane. If
conversion is required use the approved conversion kit,
NQ TE - Units are shipped equipped for natural gas, but can
be converted to LP/propane with a conversion kit. Conversion must be performed by an approved licensed pipe
fitter or technician.
All LP/propane gas equipment must conform to the safety
standards of the National Fire Protection Association.
Complete
information
regarding
tank
sizing
for
vaporization, recommended regulator settings, and pipe
sizing is available from most regulator manufacturers and
LP/propane gas suppliers.
Proper sizing of gas piping depends on the cubic feet per
hour of gas flow required, specific gravity of the gas and
length of run, In the United States, the current National Fuel
Gas Code Z223.1 should be followed in all cases unless

in Feet

1/2 in.

3/4in.

1 in.

1-1/4 in.

132

278

520

1050

190

350

730

152

285

590

130

245

500

115

215

440

105

195

400

180

370

170

350

160

320

1O0

150

305

The gas supply piping should be routed through the grommet on the side of the unit, Refer to figure 7,
Gas Piping and Electrical

Conduit

Access

superseded by local codes or gas company requirements.
Refer to tables 2 and 3, In Canada, refer to the current CSA
B,149 installation codes,
Gas

Table 2
Gas Heat Application

Data

Unit
Heating Size

Input Rating
(Btu)

Output Rating
(Btu)

67,500

54,000

82,500

66,000

90,000

72,000

110

110,000

88,000

102

138

137,500

110,000

128

Thermostat _(5/_(_
Entry
J
/

Gas Capacity*
(FT3/HR)

Line

*Based

on 1075 Btu per cubic

foot

of natural

Voltage

Entry

gas.

Before connecting piping, check with gas company or
authorities having jurisdiction for local codes or requirements, When installing gas supply piping, length of run
from gas meter must be considered in determining pipe
size for 0,5 inch w,c, maximum pressure drop, Do not

Figure 7
When making piping connections, a drip leg should be
installed on vertical runs to serve as a trap for sediment or
condensate, A 1/8 inch N,RT. tap accessible for test gauge
connection must be provided in field piping upstream from
gas supply connection to unit. Install a ground joint union
between gas control manifold and the manual main shutoff valve. See figure 8,
Compounds used on threaded joints of gas piping shall be
resistant to the action of propane/LP gases,

Page 8

NOTE - In case of emergency shutdown, shut off main
manual gas valve and disconnect main power to unit,
These devices should be properly labeled by installer.

Drip Leg Installation
field provided
1/8 in. !

The heating value of the gas may differ with locality, The
value should be checked with the local gas utility.

ground joint
union
manual main
shut-off

unit

NOTE - There may be a local gas utility requirement specifying a minimum diameter for gas piping. All units require a
1/2 inch pipe connection at the gas valve,
Gas piping recommendations:
1 - A drip leg and a ground joint union must be installed in
the gas piping.

leg

A ground joint union is recommended
ifold/valve,

gas piping
support

2 - When required by local codes, a manual shut-off valve
may have to be installed outside of the unit,

Figure 8
Pressure

3 - Use pipe thread sealing compound resistant to propane gas sparingly on male threads,

Test Gas Piping

When pressure testing gas lines, the gas valve must be disconnected and isolated. Gas valve can be damaged if subjected to more than 0,5 psig (14 inch w,c,), See figure 9.
If test pressure is equal to or less than 0,5 psig (14 inch
w.c,) shutoff the manual main shut-off valve before pressure testing to isolate unit from gas supply system,
Isolate

by the man-

Gas Valve To Pressure

4 - The gas supply should be a separate line and installed
in accordance with all safety codes. After the gas connections have been completed, open the main shut-off
valve admitting normal gas pressure to the mains,
Check all joints for leaks with soap solution or other
material suitable for the purpose,

Test

CAUTION

Manual Main Shut-off Valve Will Not Hold Test
Pressures in Excess of 0.5 PSIG (14 in. w.c.)

unit

gas valve

5 -The unit and its individual manual shut-off valve must
be disconnected from the gas supply piping system
during any pressure testing of that system at test pressures in excess of 1/2 PSIG (3,48kPa).

cap

Figure 9
NOTE - Codes may require that manual main shut off valve
and union (furnished by installer) be installed in gas line external to unit, Union must be of the ground joint type,

A IMPORTANT

, WARNING

After gas piping is complete, carefully check all piping connections (factory and field) for gas leaks. Use soap solution
or other preferred means.

Page 9

6 - A 1/8 inch N.RT. plugged tapping, accessible for test
gage connections, must be installed immediately upstream of the gas supply connection to the furnace.

All wiring should be done in accordance with the
current National Electric Code ANSI/NFPA No. 70 in the

See figure 10 for field connection of line voltage wiring, See
figure 11 for typical wiring diagram.
208/230

United States. In Canada, wiring must be done in
accordance with the current CSA C22.2 Part 1. Local

Line Voltage

Wiring

contactor

codes may take precedence.
Use wiring with a temperature limitation of 75_C min.; run
the 208 or 230 volt, 60 hertz electric power supply through a
fused disconnect switch to control box of unit and connect
as shown in the wiring diagram located on the inside of the
control access panel,
Unit must be electrically grounded in accordance with local
codes or in the absence of local codes with the National
Electric Code, ANSI/NFPA No. 70 (latest edition) or CSA
C22.2 Part 1 (latest edition).
Power supply to the unit must be N.E,C, 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 carry minimum circuit
ampacity
marked
on the
unit.
USE COPPER
CONDUCTORS ONLY. Each unit must be wired with a
separate branch circuit and be properly fused.

CAUTION

(furnished
__

(:_

fused

by installer)

disconnect

switch

ground

lug

NOTE - ff 208 voltage is supplied, transformer
connections must be made.

Figure

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
manufacturer's instructions enclosed with thermostat for
general installation procedure. Color coded insulated wires
(# 18 AWG) should be used to connect thermostat to unit.
Four wires are required for cooling.
Heat Anticipator

Setting

It is important that the anticipator setpoint be correct. Too
high of a setting will result in longer heat cycles and a
greater temperature swing in the conditioned space.
Reducing the value below the correct setpoint will give
shorter "ON" cycles and may result in the lowering of the
temperature within the conditioned space.
Heat Anticipator Setting: 0.70 AMP

Page 10

13GCSX

Series Gas Packaged

Typical Wiring

m.Ol[_ SPEED¢_ART
UIItT

fKlr_

HEAT

,COOl.(HI.K)

WED

WED I

NED

HIGH

HtGHt

HIGH

LOW o

LOH

I I 0

LOW I

LOW

WED

I I 0

LOW

WED

138

WED i

LO!it

HIGH

I I 0

LQW

HIGH

t38

NED

HIGH

SETTING:

0.70

AMP

THERMOSTAT

HIGH PRESSURE
u JUMPER REQUIRED
SWITCH (IF USED) YEL

BLU

IF THE JUMPER IS HOT USED, CONNECT
BLUE WIRE TO THE HEAT TERMINAL.

HEO

iGNiTiON
I

CONTROL

I
ACB

ACBI

,
As,G 5
:.VAC

G I>

II ]_ II ]1

1 I 1

SEE C HAg T----I

COMPRESSOR
CONTACTON

BLK
"
_Wi=
DUAL
CAPACITOR

O 5:-C

r-- G=HU

FLAW{

I
I
I
I
]
_
l

l
I
I
I
[
|
I

I_]
I=1
I_]
_
|
t

FOR WIRING

CI?

ZOB/ZSOV-l-6O

COMPRESSOR

COMUENS

WAIN
LINt
SWITCH'T_"I
_-I
_=1
.L
ROLLOUT_
SWITCH _47
_'"

I
I
I
I
[
I

I
I
J
I
I
I
I

I I

'I II

PN
N
•EW_T_e_UFI_"_'--"--I
_"'_'/_l
" -1

PUU_l_ "S_Pl

ANTICIPATION

LOW

Diagram

MOTOR

al_lOD _TTim

¢OGLI_,6 iNPUT HEATtN6 INPUT HEAT(BLU)

Units

I
I
J
_
_

AUX. LIMIT
SWITCH(IF USED)

l
GVI
h_..E_-_.l_v
....
|-|........
I

DIAGNOSTICS
IGNITION CONTROL
The following
ignition
control
board LEO codes will
indicate
normal or abnormal operafionz:
SLOW FLASH Normal operation,
no call
for heat.
FAST FLASH Normol oper_Jfio_,
colt
for heat.
g FLASH System IockouE
failed
to defect
or sestain
3 FLASH Pressure switch
senses incorrect
pressure,
4 FLASH Mai_ limit
open or rollout
switch
open.
5 FLASH

Flame

sensed

and gas valve

flame.

nor energized.

STEADY
,nter0o,
fo. *°icro-cootro,ler
r.
tai,ure;
s..c.c.

NOTE:
IF ANY OF THE ORIGINAL
WIRE IS REPLACED THE
SAME SIZE AND TYPE WIRE
MUST BE USED.
USE COPPER CONDUCTOR
ONLY, WIN 75"C WIRE
LINE VOLTAGE FIELD

INSTALLED

wer_e_uc
.......
ELECTRIC" SH_K HAZARD, UNIT
MUST BE GROUNDEDIN ACCORDANCE
WITH NATIONAL AND LOCAL CODES.

Table 5
13GCSXA-36

WARNING

Blower

Performance

0 through 0.80 in. w.g. (0 through 200 Pa)
External Static Pressure Range
Horizontal Air Flow
External Static
Pressure
in. w.g.

Air Volume at Various Blower Speeds
High
Medium
Low
cfm
L/s
cfm
L/s
cfm
L/s

13GCSX units are equipped with an indoor blower that is
controlled by the integrated ignition control board.

.20

1510

715

1060

500

870

410

.30

1460

690

1050

495

860

4O5

Factory settings for the blower speed jumpers are given in
the wiring diagram in figure 11. Use tables 4, 5 and 6 to determine the correct air volume for operation in heat and
cool mode.

.40

100

1400

660

1030

485

840

395

.50

125

1330

630

990

465

820

385

.60

150

1250

590

950

450

790

375

.70

175

1180

555

900

425

750

355

.80

200

1100

520

850

400

680

32O

To change blower speeds, move blower speed tap wire on
the blower motor. Refer to figure 14.
Table 4

NOTE - All air data is measured external to unit without air filters,
1 For down-flow air volume, add 0.05 in. w.g. (12 Pa) to duct static.

13GCSXA-24, 13GCSXA-30 Blower Performance
0 through 0.80 in. w.g. (0 through 200 Pa)
ExternalStatic Pressure Range
Horizontal Air Flow

Table 6
13GCSXA-42,
13GCSXA-48,
13GCSXA-60
Blower Performance

External Static
Pressure

Air Volume at Various Blower Speeds
Medium
Low
High

in. w.g.

cfm

L/s

cfm

L/s

cfm

L/s

0 through 0.80 in. w.g. (0 through 200 Pa)
External Static Pressure Range
Horizontal Air Flow

.20

1470

695

1070

505

880

415

.30

1420

670

1060

500

870

410

.40

100

1360

640

1020

480

850

400

External Static
Pressure

.50

125

1290

610

1000

470

820

385

in. w.g.

.60

150

1220

575

950

450

790

375

.20

.70

175

1140

540

900

425

740

35O

.80

200

1050

495

830

390

690

325

NOTE - All air data is measured external to unit without air filters.
1 For down-flow air volume, add 0.05 in. w.g. (12 Pa) to duct static.

Air Volume at Various Blower Speeds
High
cfm
L/s

Medium
cfm
L/s

Low
cfm
L/s

2090

985

1820

860

1520

715

.30

2000

945

1780

840

1480

7OO

.40

100

1930

910

1730

815

1450

685

.50

125

1820

860

1650

780

1440

68O

.60

150

1710

805

1570

740

1410

665

.70

175

1590

750

1480

700

1360

64O

.80

200

1480

700

1370

645

1260

595

NOTE - All air data is measured external to unit without air filters,
1 For down-flow air volume, add 0.05 in. w.g. (12 Pa) to duct static.

Page 12

Blower

Thecoolingsectionis a complete
factorypackageutilizing
an air-cooledcondenser.
Thesystemis factory-charged
with R-410Arefrigerant.
Thecompressor
is hermetically
sealed, internallysprung and base-mountedwith
rubber-insolated
hold-down
bolts.
Pre-Start

Check

List:

1 - Make sure refrigerant lines do not rub against the cabinet or each other.
2-

Delay - Cooling

In the cooling mode, the circulating air blower operation is
delayed for 5 seconds after the compressor starts. The
blower continues to operate for 90 seconds after the
compressor is de-energized.
NOTE - With the proper thermostat and subbase, continuous blower operation is possible by closing the R to G circull Cooling blower delay is also functional in this mode.
System

Performance

For maximum performance of this cooling system, the
operating temperatures and pressure should be checked
and superheat determined at Standard ARI test conditions
of 82 '_ F outdoor temperature minus ( - ) 80 ° F indoor dry
bulb / 67 <_F indoor wet bulb. If superheat measured
deviates from values in table 7, refrigerant charge should
be adjusted accordingly for maximum performance.

Inspect all electrical wiring, both factory- and fieldinstalled, for loose connections.

3 - Check voltage at the disconnect switch. Voltage must
be within the range listed on the unit nameplate. If not,
consult power company and have voltage condition
corrected before starting unit.
4 - Recheck voltage with unit running. If power is not within the range listed on the unit nameplate, stop the unit
and consult the power company. Check unit amperage. Refer to unit nameplate for correct running amps.

Table
Suction

5 - Make sure filter is in place before unit start-up.
6 - Before placing the unit into full operation, energize the
unit for three false starts. Energize the compressor
just long enough for it to make a few revolutions, wait
five to seven minutes before repeating a second and
third time.
Cooling Sequence
of Operation
When the thermostat calls for cooling, "R" is closed to "G"
and "Y" (figure 11). This completes the low voltage control
circuit, energizing the compressor, condenser fan motor
and blower motor.

Values

Unit Model No.

Suction Superheat
82°F OD minus 80"F IDDB
/ 67"F IDWB

13GCSX-24
13GCSX-30

16"

13GCSX-36

12 °

13GCSX-42
13GCSX-48
13GCSX-60

16 °

Used carefully, this table could serve as a useful service
guide. Data is based on 80°F dry bulb / 87°F wet bulb return
air. Allow unit operation to stabilize before taking pressure
readings.

Unit compressors have internal protection. If there is an
abnormal rise in the compressor temperature,
the
protector will open and the compressor will stop.
Table
80°F db/ 87°F wb RETURN AIR
UNIT
PRESSURE

Superheat

Verify system performance using table 8 as a general guide.
Table 8 should not be used for charging unit. Minor variations in these pressures may be expected due to differences
in installations. Significant differences could mean that the
system is not properly charged or that a problem exists with
some component in the system.

NOTE - At the start of the each cooling demand, the
combustion air blower (draft motor) will operate for 10
seconds.

Normal

Operating

Pressures

Air Temperature Entering Outdoor Coil (°F)
65

100

105

110

115

133
133

136
135

138
138

141
140

142
141

143
142

146
144

149
147

150
148

152
149

155
151

157
153

140
124

142
127

144
130

146
133

147
134

148
135

150
138

152
142

154
142

155
144

157
147

159
149

13GCSX-48
13GCSX-60

139
142

140
143

142
144

143
146

144
146

145
147

146
148

148
149

148
151

149
152

150
154

152
156

13GCSX-24
13GCSX-30

222
232

245
255

267
277

290
300

299
309

312
323

335
345

358
368

379
390

397
408

429
440

456
467

241
223

265
247

288
270

312
294

321
303

336
317

360
339

382
364

409
384

429
402

461
434

488
461

239
258

261
281

284
303

306
326

315
335

328
349

349
373

373
394

391
420

408
439

440
471

467
498

13GCSX-24
13GCSX-30
13GCSX-36
13GCSX-42

13GCSX-36
13GCSX-42
13GCSX-48
13GCSX-60

Suction

Liquid

Page 13

Pre-Start

Check List:

1 - Check the type of gas being supplied, Be sure it is the
same as listed on the unit nameplate,
2 - Make sure the vent hood has been properly installed,
FOR YOUR SAFETY

READ BEFORE

LIGHTING

BEFORE LIGHTING the unit, smell all around the furnace area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the
floor,

3 - HoneywellVR8205
Gas Valve with ON/OFF Switch Set gas valve switch to ON. See figure 12.
Honeywell VR8205 Gas Valve with Knob - Turn knob
on gas valve counterclockwise _1_ to ON, Do not
force. See figure 13.
4 - Turn on electrical power to unit.
5 - Set room thermostat to desired temperature, (If thermostat setpoint temperature is above room temperature after the pre-purge time expires, main burners will
light),
Honeywell VR8205 Series Gas Valve
Regulator
Gas Control

Adjustment

,WARNING

Switch

............
...........
Inlet Pressure Tap
1/8" NPT

IkWARNING

Outlet Pressure Tap
1/8" NPT

Figure

Honeywell VR8205 Gas Valve with Control Knob
MANIFOLD
PRESSURE
_\_
ADJ USTM ENT'_-?,--_ _ 4"

,WARNING

SCREW
(under
barbed

I..=1."_'_

_("1:3"_ ./I"

fitting)

_
'

PRESSUREI _
PORT
I -I

k_("

MANIFOLD

\
ON

_
/.,4
OFFj//,

GAS VALVE SHOWN IN OFF POSITION

Fiqure 13

WARNING

To Shut Down:
1 - Turn off electric power to unit.
2 - HoneywellVR8205
Gas Valve with ON/OFF Switch
- Set gas valve switch to OFF,
Honeywell VR8205 Gas Valve with Knob -Turn gas
valve knob clockwise _1_ to OFF. Do not force.

The gas valve on may be equipped with either a gas control switch or gas control knob, Use only your hand to
push the switch or turn the gas control knob. Never use
tools. If the the switch will not move or the knob will not
push in or turn by hand, do not try to repair it. Call a qualified service techni clan, Force or attempted repair may
result in a fire or explosion,
This unit is equipped with a direct ignition control, Do not
attempt to manually light the burners,
1 - Turn off electrical power to unit.
2 - Set thermostat to lowest setting,

Post Start-up Check List (Gas)
After the control circuit has been energized and the heating
section is operating, make the following checks:
1 - Use soap solution to check for gas leaks in the unit piping as well as the supply piping,
2 - Check for correct manifold gas pressures, See "Manifold Gas Pressure Adjustment."
3 - Check the supply gas pressure. It must be within the
limits shown on rating nameplate. Supply pressure
should be checked with all gas appliances in the building at full fire, At no time should the supply

Page 14

gaspressure
exceed10.5inchesw,c,,nordropbelow
5.0inchesw.c.fornaturalgasunits,Forpropane
gas,
supplygaspressureshouldnotdropbelow11inches
w.c. If gaspressureis outsidetheselimits,contact
yourgassupplierforcorrective
action,
4 - Adjusttemperature
risetotherangespecifiedonthe
ratingplate.
Checking

and Adjusting

Gas Input

NOTE - Units must be converted for use with LP/propane
gas, Conversion kit is ordered separately, Conversion
must be performed by an approved licensed pipe fitter
or technician.
The minimum permissible gas supply pressure is 5,0
inches W.C. for natural gas or 11,0 inches W.C. for
LP/propane gas, The maximum inlet gas supply pressure
is 10.5 inches W.C. for natural gas and 13,0 inches W.C. for
LP/propane gas. Gas input must never exceed the input
capacity shown on the rating plate.
Units fueled by natural gas are rated for manifold pressures
of 3,5 inches W,C,
Units fueled by LP/propane gas are rated for manifold
pressures of 10.0 inches W,C,
Measure manifold pressure: Shut off gas supply to the
unit. Remove plug from pressure tap, See figure 12 or 13.
Connect manometer or gauge to the proper pressure tap,
then turn on the gas supply,
The Honeywell VR8205 gas valve has an adjusting screw.
See figure 12 or 13 for adjusting screw location, Remove
the cap and turn the adjusting screw clockwise to increase
pressure and input; turn counterclockwise to decrease
pressure and input. The pressure regulator adjustment is
sensitive. One turn d the adjusting screw results in a large
change in manifold pressure. Replace the adjusting screw
cap.
Final manifold pressure must be within the allowable range
for the gas being used.
For Natural Gas: Check the furnace rate by observing gas
meter, making sure all other gas appliances are turned off.
The test hand on the meter should be timed for at least one
revolution. Note the number of seconds for one revolution,
BTU/HR =
INPUT

Cubic Feet Per Revolution

X 3600 X Heating Value

Heating

Sequence

of the CSA B149 installation

of Operation

When the thermostat calls for heating, Wl is energized,
The ignition control checks high temperature limit and
rollout switches to make sure they are closed, The control
then verifies that the pressure switch is open. If the
pressure switch is closed, the control will flash code 3 on
the LED and will wait indefinitely for the pressure switch to
open. If the pressure switch is open, the control proceeds
to the 30-second pre-purge.
The ignition control energizes the combustion air inducer,
flashes a code 3 on the LED, and waits for the pressure
switch to close,
When the pressure switch has closed, the LED code 3 flash
stops and the control begins the 30-second pre-purge
period. When the pre-purge time has expired, the control
begins the ignition trial,
The ignition control energizes the gas valve, spark
electrode and flame sensor. If the flame is established
within 10 seconds, the control de-energizes the spark, If
flame is not established within 10 seconds, the gas valve
and spark are de-energized. The ignition control will initiate
three ignition trials, If the flame sensor does not sense an
established flame at the end of the third ignition trial, the
igntion control will allow a 1-hour Watchguard period to
pass before allowing additional ignition trials.
Approximately 30 seconds after the flame has been
established, the circulating air blower starts, The ignition
control inputs are continuously monitored to ensure that
limit switch(es), rollout switch and pressure switch are all
closed, and that the flame remains established and heating
demand is present.
When the heating demand is satisfied, the control
immediately de-energizes the gas valve and combustion
air inducer, The circulating air blower operates for 120
seconds after the gas valve is de-energized.
Blower

Delay - Heating

In the heating mode, the circulating air blower operation is
delayed for 30 seconds after the flame is established. The
blower continues to operate for 120 seconds after the gas
valve is de-energized,
NOTE - With the proper thermostat and subbase, continu-

No. Seconds Per Revolution

The heating value of your gas can be obtained from your
local utility.
For LP/Propane Gas: The only check for the output rate is
to properly adjust the manifold pressure using a manometer, Typical manifold setpoint for installations at altitudes
from 0 to 4500 feet above sea level is 10,0 inches W,C,
High Altitude

edition) or the requirements
codes.

Information

Ratings shown on the rating plate for elevations up to 4,500
feet. For elevations above 4,500 feet, ratings should be
reduced at a rate of four percent for each 1,000 feet above
sea level. See National Fuel Gas Code Z223.1 (latest

ous blower operation is possible by closing the R to G circull

Integrated

Ignition

Control

Board (A3)

The 13GCSX unit includes an integrated ignition control
board which controls the combustion air inducer, gas valve,
spark electrode and indoor blower. The control board
receives signals from the main and auxiliary limit switches,
the rollout switch, the pressure switch and the flame
sensor. LED codes and flash rates are given on page 16.
The ignition control board is shown in figure 14.

Page 15

Ignition
ANSl Z2t+20 mUtOrl_++=_: ImmltlOm

mVSt[#

o @@8 ol3

Control

Board

2+W*C SO/++Ol++

.25 MALE QUICK CONNECTS:
TI- SPARK TRANSFORMER
24 VAC HOT
GROUND : 24 VAC RETURN
CMB BLOWER : COMBUSTION BLOWER (LINE VOLTAGE)
LI : LINE VOLTAGE
ACB COOL : AIR CIRCULATING BLOWER COOL
SPEED (LINE VOLTAGE)
ACB HEAT : AIR CIRCULATING BLOWER HEAT
SPEED (LINE VOLTAGE)
UNUSED

.......o

+sL_ _1

,19 MALE QUICK CONNECT:

FLAME z FLAME PROBE
MOLEXIAMP PLUG-IN DESCRIPTION:
I. MAIN LIMIT AND ROLLOUT SWITCH RETURN
2, PRESSURE SWITCH OUT
3. GAS VALVE COMMON
4. GAS VALVE OUT
5. PRESSURE SWITCH RETURN
6, MAIN LIMIT AND ROLLOUT SWITCH OUT

G
K4

THERMOSTAT INPUT:
R : 24 VAC TO THERMOSTAT (RED)
G : MANUAL FAN INPUT FROM THERMOSTAT (GREEN)
W : HEAT DEMAND INPUT FROM THERMOSTAT (WHITE)
C : COMMON GROUND TO THERMOSTAT
Y : COOL DEMAND INPUT FROM THERMOSTAT (YELLOW)

Figure 14
Integrated

Ignition

Control

Pressure

Board LED Codes

The ignition control board LED flashes codes which indicate normal or abnormal operations:
Slow Flash -- Normal operation, no call for heat.
One flash per second,

Switch

If the combustion air inducer motor should fail or if the vent
system is blocked, the pressure switch prevents the gas
valve from being energized,
Spark

Electrode

and Flame Sensor

Rod

The spark electrode and flame sensor rod are part of the
burner assembly. The spark electrode is typically located
on the far-left burner. The flame sensor rod is typically
located on the far-right burner. If the ignition control does
not receive a signal from the flame sensor indicating that
the burners have established flame, the main gas valve will
close after the 10-second ignition trial period built into the
ignition control.

Fast Flash -- Normal operation, call for heat,
Two flashes per second.
Steady On -- Internal control failure,
(Micro-controller failure; self-check),
Code 2 -- System lockout -- Failed to detect or sustain
flame,
Two flashes in 1 second with a 1-second pause.
Code 3 -- Pressure switch senses incorrect pressure or
is stuck in the closed position,
Three flashes in 1-1/2 seconds with a 1-second pause.

The switch is located above the main burners. In the event

Code 4 -- Main limit or rollout switch open.
Four flashes in 2 seconds with a 1-second pause.

of a sustained main burner rollout the main gas valve is
closed. To reset, push the button on top of the switch,

Code 5 -- Flame sensed while gas valve de-energized,
Five flashes in 2-1/2 seconds with a 1-second pause,

Auxiliary

Rollout

Limit Control
This control is located inside the heating compartment and
is designed to open at abnormally high air temperatures. It
resets automatically. The limit switch operates when a high
temperature condition, caused by inadequate blower
supply airflow, occurs. The main gas valve is closed. The
circulating air blower will continue to operate until the limit
control closes and the blower off delay period has elapsed.

Switch

Limit

(-42, -48 & -60 units

only)

This control is located in the side of the circulating air blower
housing. If the circulating air blower fails to operate, the
temperature rises and opens the auxiliary limit. The main
gas valve closes, This control resets automatically.

The top of the condenser fan should be 1-1/2 inchs from the
bottom of the top grille. This dimension should be checked
and the fan should be adjusted accordingly any time servicing of the outdoor fan system is required.

Page 16

Periodicinspection
andmaintenance
normallyconsistsof
changingor cleaningfiltersand(undersomeconditions)
cleaningthemainburners,
Filters
Notsupplied.
Inspectoncea month,Replace
disposable
or
cleanpermanent
typeasnecessary,
DONOTreplacepermanenttypewithdisposable,
Motors
Indoor,outdoorfan and vent motorsare permanently
lubricatedand requireno further lubrication.Motors
shouldbecleanedyearlyto preventtheaccumulation
of
dustanddirtonthewindingsor motorexterior,
Coil
Dirtanddebrisshouldnotbeallowedtoaccumulate
onthe
coilsurfacesor otherpartsinthe airconditioning
circuit.
Cleaningshouldbeperformed
as oftenasnecessary.
Use
a brush,vacuumcleanerattachment,or othersuitable
means,Ifwaterisusedtocleanthecoil,besurethepower
tounitis shutoffpriortocleaning.

burner flames. Compare this observation to figure 15 to
determine if flame is properly adjusted. Flame should be
predominantly blue in color and strong in appearance,
Verify that all burnres are lit and that the flame does not
impinge on the sides of the heat exchanger.
Distorted flame or yellow tipping of the natural gas flame
(or long yellow tips on LP/propane flame) may be caused
by one or more of the following: lint or dirt inside the burner or burner ports; lint or dirt at the air inlet between the
burner and manifold pipe; or an obstruction over the
burner orifice.
Use a soft brush or vacuum to clean the affected areas,
Burner

Burner

Gas
Manifold

NQ TE - 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,
To Clean

Flame
Heat
Exchanger

Burner Flame
(Blue Only)
Figure

Vent Outlet

Burners

Light the burners and allow unit to operate for a few minutes to establish normal burning conditions, Observe the

Visually inspect vent outlet periodically to make sure that the
there is no buildup of soot and dirt. If necessary, clean to
maintain adequate opening to discharge flue products,

The following repair parts are available from your local dealer, When ordering parts, include the complete model number
and serial number which are printed on the unit rating plate,
Controls

Blower Components

Rollout Switch
Transformer
Limit Control
Gas Valve
Ignition Control
Electrode
Flame Sensor
Auxiliary Limit
Pressure Switch
Blower Control

Blower
Blower
Blower
Blower

Housing Assembly
Wheel
Motor
Motor Mount

Blower Motor Capacitor (if used)
Combustion Air Inducer
Fan Blade
Fan Motor
Fan Motor Capacitor

Heating Components
Gas Manifold
Main Burner Orifices
Main Burners
Heat Exchanger
Cooling Components
Compressor
Evaporator Coil
Drier
Expansion Valve
Contactor
Capacitor
Condenser Coil

Accessories
Description
LP/Propane Gas Conversion Kit (heat sizes 68 and 90)
LP/Propane Gas Conversion Kit (heat sizes 83, 110 and 138)
Filter Kit (2-ton to 3-ton capacity units)
Filter Kit (3-1/2-ton to 5-ton capacity units)

Page 17

LENNOX Cat.
Number
92M57
92M58
92M54
92M55

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LENNOX Package Units(both Units Combined) Manual L0806665

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