LENNOX Furnace/Heater, Gas Manual L0806201

User Manual: LENNOX LENNOX Furnace/Heater, Gas Manual LENNOX Furnace/Heater, Gas Owner's Manual, LENNOX Furnace/Heater, Gas installation guides

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_;_,2006 Lennox Industries Inc.

Dallas, Texas, USA

INSTALLATION

INSTRUCTIONS

G60UHV(X) Series

GAS FURNACE _-_") Technical

505,121M _--_.L_Publications

09/2006

Supersedes 06/2006 Lithe U.S.A.

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

Unit Dimensions ................................ 2

G60UHV(X) Parts Arrangement ................... 3

G60UHV(X) Gas Furnace ........................ 4

Shipping and Packing List ........................ 4

Safety Information ............................... 4

General ........................................ 5

Combustion, Dilution & Ventilation Air .............. 6

Setting Equipment ............................... 9

Filters .......................................... 13

Duct System .................................... 13

Venting ........................................ 13

Gas Piping ..................................... 21

Electrical ....................................... 22

Integrated Control Board Settings ................. 28

Unit Start-Up ................................... 37

Gas Pressure Adjustment ........................ 38

High Altitude Information ......................... 38

Other Unit Adjustments .......................... 38

Heating Sequence of Operation ................... 39

Service ........................................ 40

Repair Parts List ................................ 42

Ignition Control Board Diagnostic Codes ........... 43

Troubleshooting ................................. 44

Start-Up & Performance Check List ................ 50

AWARNING

Do not store or use gasoline or other

flammable vapors and liquids in the

vicinity of this or any other ap-

pliance.

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.

09/06

iiiHiinlnlllllllllnllllllllllllllllll Page1

505,121M

IIIlllllllllllllllllllllllllllllllllllllllllll

*NOTE - 60C and 60D units that require air volumes

over 1800 cfm (850 L/s) must have one of the following:

1. Return air from single side with transition which will

accommodate 20 x 25 x 1 in. (508 x 635 x 25 mm)

cleanable air filter. (Required to maintain proper air

velocity.)

2. Return air from single side with optional RAB Return

Air Base.

3. Return air from bottom.

4. Return air from both sides.

5. Return air from bottom and one side.

Refer to Engineering Handbook for additional information.

**Flue outlet may be horizontal but furnace must be

vented vertically

_Optional external side return air filter kit cannot be used

with the optional RAB Return Air Base.

3/4 (19) -I_

<1-9/16 (14)

_OPTIONAL

EXTERNAL

SIDE RETURN

AIR FILTER KIT

(Either Side)

14-3/4

(375)

(406)

5/8 (16)

|/ 3/4(19)

*Bottom Return

Air Opening

FRONT VIEW

(1016)

3"3/4 (95)-I_1 F

FLUE OUTLET

(Top)

_OPTIONAL _---'---'--_----__--_. I

EXTERNAL _ _ 23-3/4 t603_

SIDE RETURN - II - • ,- uI

AIR FILTER KIT I_-._ 25 (635) =I

(Either Side) TOP VIEW

TOP VIEW

3-1/4 (83) Right --I 4

8-1/8 (206) Left |3-31, L

-_ (95)

=I_._

l \

14 (356) Right

13-1/4 (337) Left

4-7/8 (124) Right

2-1/4 (57) Left

28-1/2

(724)

n._ 19-7/16._

(494)

23-1/2

(597)

4-1/4 *Bottom Return

(108) Air Opening

SIDE VIEW

ABCD

Model No. in. mm in. mm in. mm in. mm

G6OUHV-36A-070 14-1/2 368 13-3/8 340 13 330 4-1/2 114

G6OUHV-36B-090 17-1/2 446 16-3/8 416 16 406 6 152

G6OUHV-6OC-O9O, 21 533 19-7/8 454 19-1/2 495 7-3/4 197

G6OUHV-60C-110

G6OUHV-6OD-135 24-1/2 622 23-3/8 546 23 584 9-1/2 241

9/16

'91-(14)

Page 2

Gasket

Flue

Transition

FlueBoxGasket

Flue

Collector

Box

Combustion Air

Orifice

Combustion Air

Pressure Switch Assembly

(two switches)

./ Combustion Air Inducer

Flame Sensor Limit Shield

_Flame Rollout Switches \

Air Intake _ _ Primary \/I

Cover _ Limit

Burner //__ I

Box Tol I Kz'2 I

NOx Insert

Gas Valve

Gas

Orifices Gasket

Heat Exchanger

Sight

Glass

Burner

Box Cover

Bracket

Burner Box Bottom

Control Transformer

Ignitor

Circuit Breaker

Air Deflector

G60UH-60C-110

Units Only

Secondary Limit(s)

Power Choke

(1 hp Only)

Variable Speed

Blower Motor

Two-Stage, Variable Speed

Integrated Control Board

Door Interlock Switch

FIGURE 1

Page 3

TheG60UHV(X)gasfurnaceis equippedwitha two-

stage,variablespeedintegratedcontrol.Thiscontrolen-

surescompatibilitywithLennox'HarmonyIllzonecontrol

system,aswellasathermostatwhichprovideshumidity

control.EachG60UHV(X)unitisshippedreadyforinstal-

lationintheupfloworhorizontalposition(leftorright).The

furnaceisshippedwiththebottompanelinplace.Thebot-

tompanelmustberemovediftheunitistobeinstalledina

horizontalapplication.Thepanelmayalsoberemovedin

upflowapplications.

Package1of 1contains

1- AssembledG60UHV(X)unit

1- Bagassemblycontainingthefollowing:

2-Screws

3-Wirenuts

1-Snapbushing

1-Snapplug

1- Wiretie

1-Vent warning label

1 -Owner's manual and warranty card

The following items may be ordered separately:

1- Thermostat

1 - Hanging bracket (for horizontal installations)

1 - Propane/LP changeover kit

1 - Return air base

1 - High altitude kit

1 - Side filter kit

Check equipment for shipping damage. If you find any

damage, immediately contact the last carrier.

,&WARNING

,&,CAUTION

G60UHV(X) units are CSA International certified to ANSI

Z21.47 and CSA 2.3 standard.

In the USA, installation of gas furnaces must conform with

local building codes. In the absence of local codes, units

must be installed according to the current National Fuel

Gas Code (ANSI-Z223.1). The National Fuel Gas Code is

available from the following address:

American National Standards Institute, Inc.

11 West 42nd Street

New York, NY 10036

In Canada, installation must conform with current National

Standard of Canada CSA-B149 installation codes for natu-

ral gas and propane gas burning appliances and equip-

ment, local plumbing or waste water codes and other appli-

cable local codes.

Adequate clearance must be made around the air open-

ings into the vestibule area. In order to ensure proper unit

operation, combustion and ventilation air supply must be

provided according to the current National Fuel Gas Code

or CSA-B149 standards.

Vent installations must be consistent with the venting

tables (in this instruction) and applicable provisions of local

building codes.

This furnace is CSA Intemational certified for installation

clearances to combustible material as listed on the unit

nameplate and in the tables in figures 6 and 11.Accessibility

and service clearances must take precedence over fire

protection clearances.

NOTE- For installation on combustible floors, the furnace

shall not be installed directly on carpeting, tile, or other

combustible material other than wood flooring.

For installation in a residential garage, the furnace must

be installed so that the burner(s) and the ignition source

are located no less than 18 inches (457 mm) above the

floor. The furnace must be located or protected to avoid

physical damage by vehicles. When a furnace is installed

in a public garage, hangar, or other building that has a haz-

ardous atmosphere, the furnace must be installed accord-

ing to recommended good practice requirements and cur-

rent National Fuel Gas Code or CSA B149 standards.

NOTE -Furnace must be adjusted to obtain a temperature

rise(high and bw fire) within the range(s) specified on the unit

nameplate. Failure to do so may cause erratic limit operation.

This G60UHV(X) furnace must be installed so that its elec-

trical components are protected from water.

When this furnace is used with cooling units, it shall be

installed in parallel with, or on the upstream side of, cooling

units to avoid condensation in the heating compartment.

With a parallel flow arrangement, a damper (or other

means to control the flow of air) must adequately prevent

chilled air from entering the furnace. If the damper is manu-

ally operated, it must be equipped to prevent operation of

either the heating or the cooling unit, unless it is in the full

HEAT or COOL setting.

Page 4

Wheninstalled,thisfurnacemustbeelectricallygrounded

accordingtolocalcodes.Inaddition,intheUnitedStates,

installationmustconformwiththecurrentNationalElec-

tricCode,ANSI/NFPANo.70.TheNationalElectricCode

(ANSI/NFPANo.70)isavailablefromthefollowingad-

dress:

NationalFireProtectionAssociation

1BatteryMarchPark

Quincy,MA02269

InCanada,allelectricalwiringandgroundingfortheunit

mustbeinstalledaccordingtothecurrentregulationsofthe

CanadianElectricalCodePartI (CSAStandardC22.1)

and/orlocalcodes.

NOTE -This furnace is designed for a minimum continu-

ous return air temperature of 60°F (16°C) or an intermit-

tent operation down to 55°F (13°C) dry bulb for cases

where a night setback thermostat is used. Return air tem-

perature must not exceed 85°F (29 °C) dry bulb.

The G60UHV(X) furnace may be installed in alcoves, clos-

ets, attics, basements, garages, and utility rooms in the up-

flow or horizontal position.

This furnace design has not been CSA International certi-

fied for installation in mobile homes, recreational vehicles,

or outdoors.

Lennox does not recommend the use of G60UHV(X) units

as a construction heater during any phase of construction.

Very low return air temperatures, harmful vapors and op-

eration of the unit with clogged or misplaced filters will dam-

age the unit.

G60UHV(X) units may be used for heating of buildings or

structures under construction, if the following conditions

are met:

•The vent system must be permanently installed per

these installation instructions.

• A room thermostat must control the furnace. The use of

fixed jumpers that will provide continuous heating is not

aflowed.

• The return air duct must be provided and sealed to the

furnace.

• Return air temperature range between 60°F (16°C) and

80°F (27°C) must be maintained.

• Air filters must be instafled in the system and must be

maintained during construction.

• Air filters must be replaced upon construction comple-

tion.

• The input rate and temperature rise must be set per the

furnace rating plate.

•One hundred percent (100%) outdoor air must be pro-

vided for combustion air requirements during construc-

tion. Temporary ducting may supply outdoor air to the

furnace. Do not connect duct directly to the furnace.

Size the temporary duct following these instructions in

section for Combustion, Dilution and Ventilation Air in a

confined space with air from outside.

• The furnace heat exchanger, components, duct system,

air filters and evaporator coils must be thoroughly

cleaned following final construction clean-up.

• All furnace operating conditions (including ignition, in-

put rate, temperature rise and venting) must be verified

according to these installation instructions.

NOTE -The Commonwealth of Massachusetts stipu-

lates these additional requirements:

• Gas furnaces shall be installed by a llcensedplumb-

er or gas fittter only.

• The gas cock must be "T handle" type.

• When afurnace is installed in an attic, the passage-

way to and service area surrounding the equipment

shall be floored.

These instructions are intended as a general guide and do

not supersede local codes in any way. Consult authorities

having jurisdiction before installation.

In addition to the requirements outlined previously, the fol-

lowing general recommendations must be considered

when installing a G60UHV(X) furnace:

•Place the furnace as close to the center of the air dis-

tribution system as possible. The furnace should also be

located close to the chimney or vent termination point.

•Do not install the furnace where drafts might blow direct-

ly into it. This could cause improper combustion and un-

safe operation.

•Do not block the furnace combustion air openings with

clothing, boxes, doors, etc. Air is needed for proper

combustion and safe unit operation.

•When the furnace is installed in an attic or other insu-

lated space, keep insulation away from the furnace.

Page 5

j WARNING ACAUTION

In the past, there was no problem in bringing in sufficient out-

door air for combustion. Infiltration provided all the air that

was needed. In today's homes, tight construction practices

make it necessary to bring in air from outside for combus-

tion. Take into account that exhaust fans, appliance vents,

chimneys, and fireplaces force additional air that could be

used for combustion out of the house. Unless outside air is

brought into the house for combustion, negative pressure

(outside pressure is greater than inside pressure) will build

to the point that a downdraft can occur in the furnace vent

pipe or chimney. As a result, combustion gases enter the liv-

ing space creating a potentially dangerous situation.

In the absence of local codes concerning air for combus-

tion and ventilation, use the guidelines and procedures in

this section to install G60UHV(X) furnaces to ensure effi-

cient and safe operation. You must consider combustion air

needs and requirements for exhaust vents and gas piping.

A portion of this information has been reprinted with per-

mission from the National Fuel Gas Code (ANSI-Z223.1).

This reprinted material is not the complete and official posi-

tion of the ANSI on the referenced subject, which is repre-

sented only by the standard in its entirety.

In Canada, refer to the standard CSA B149 installation

codes.

&CAUTION

All gas-fired appliances require air for the combustion pro-

cess. If sufficient combustion air is not available, the fur-

nace or other appliances will operate inefficiently and un-

safely, Enough air must be provided to meet the needs of all

fuel-burning appliances and appliances such as exhaust

fans which force air out of the house, When fireplaces, ex-

haust fans, or clothes dryers are used at the same time as

the furnace, much more air is necessary to ensure proper

combustion and to prevent a downdraft. Insufficient air

causes incomplete combustion which can result in carbon

monoxide,

In addition to providing combustion air, fresh outdoor air

dilutes contaminants in the indoor air. These contami-

nants may include bleaches, adhesives, detergents, sol-

vents and other contaminants which can corrode furnace

components,

The requirements for providing air for combustion and ven-

tilation depend largely on whether the furnace is installed in

an unconfined or a confined space,

Unconfined Space

An unconfined space is an area such as a basement or

large equipment room with a volume greater than 50 cubic

feet (1,42 m3) per 1,000 Btu (.29 kW) per hour of the com-

bined input rating of all appliances installed in that space,

This space also includes adjacent rooms which are not

separated by a door. Though an area may appear to be un-

confined, it might be necessary to bring in outdoor air for

combustion if the structure does not provide enough air by

Page 6

infiltration,If thefurnaceis locatedin a buildingof tight

constructionwithweatherstrippingandcaulkingaround

thewindowsanddoors,followtheproceduresintheair

fromoutsidesection,

Confined Space

A confined space is an area with a volume less than 50 cu-

bic feet (1,42 m3) per 1,000 Btu (.29 kW) per hour of the

combined input rating of all appliances installed in that

space. This definition includes furnace closets or small

equipment rooms,

When the furnace is installed so that supply ducts carry air

circulated by the furnace to areas outside the space contain-

ing the furnace, the return air must be handled by ducts

which are sealed to the furnace casing and which terminate

outside the space containing the furnace, This is especially

important when the furnace is mounted on a platform in a

confined space such as a closet or small equipment room.

Even a small leak around the base of the unit at the platform

or at the return air duct connection can cause a potentially

dangerous negative pressure condition, Air for combustion

and ventilation can be brought into the confined space either

from inside the building or from outside.

__EQUIPMENT IN CONFINED

CHIMNEY _ /_ SPACE ALL AIR FROM INSIDE

OR GAS

_ WiTER /

HEATER

FURNACE 1_

OPENINGS

(To Adjacent

Room)

,,,,j, ,, ,, ,, ,, ,,,: ,,

I I I I

NOTE -Each opening shall have afree area of at least one square

inch (645 mm 2) per 1,000 Btu (.29 kW) per hour of the total input rat-

ing of all equipment in the enclosure, but not less than 100 square

inches (64516 ram2).

FIGURE 2

Air from Inside

If the confined space that houses the furnace adjoins a

space categorized as unconfined, air can be brought in by

providing two permanent openings between the two

spaces. Each opening must have a minimum free area of 1

square inch (645 mm2) per 1,000 Btu (.29 kW) per hour of

total input rating of all gas-fired equipment in the confined

space. Each opening must be at least 100 square inches

(64516 mm2). One opening shall be within 12 inches (305

mm) of the top of the enclosure and one opening within 12

inches (305 mm) of the bottom. See figure 2.

Air from Outside

If air from outside is brought in for combustion and ventila-

tion, the confined space must have two permanent open-

ings. One opening shall be within 12 inches (305 mm) of the

top of the enclosure and one opening within 12 inches (305

mm) of the bottom. These openings must communicate di-

rectly or by ducts with the outdoors or spaces (crawl or at-

tic) that freely communicate with the outdoors or indirectly

through vertical ducts. Each opening shall have a minimum

free area of 1 square inch (645 mm2) per 4,000 Btu (1,17

kW) per hour dtotal input rating of all equipment in the en-

closure, See figures 3 and 4. When communicating with

the outdoors through horizontal ducts, each opening shall

have a minimum free area of 1 square inch (645 mm 2) per

2,000 Btu (.56 kW) per total input rating of all equipment in

the enclosure, See figure 5.

When ducts are used, they shall be of the same cross-sec-

tional area as the free area of the openings to which they

connect. The minimum dimension of rectangular air ducts

shall be no less than 3 inches (75 mm). In calculating free

area, the blocking effect of louvers, grilles, or screens must

be considered. Ifthe design and free area of protective cov-

ering is not known for calculating the size opening required,

it may be assumed that wood louvers will have 20 to 25 per-

cent free area and metal louvers and grilles will have 60 to

75 percent free area. Louvers and grilles must be fixed in the

open position or interlocked with the equipment so that they

are opened automatically during equipment operation.

Page 7

CHIMNEY OR

GAS VENT

EQUIPMENT IN CONFINED SPACE

ALL AIR FROM OUTSIDE

(Inlet Air from Crawlspace and Outlet Air to Ventilated Attic)

VENTILATION LOUVERS

(Each end of altic)

I ...... I

OUTLET

FURNACE AIR WATER

HEATER

VENTILATION INLET

LOUVERS AIR

(For unheated crawl ._

_1 _rrrm rrrm I

NOTE-The inlet and outlet air openings shall each have a free area of at least one square inch (645

mm2) per 4, 000 Btu (1.17 kW) per hour of the total input rating of all equipment in the enclosure.

CHIMNEY

OR GAS

VENT'_

EQUIPMENT IN CONFINED SPACE

ALL AIR FROM OUTSIDE

(All Air Through Ventilated Attic)

VENTILATION LOUVERS

(Each end of attic)

FURNACE INLET AIR

Ends 12 in.

above bottom

HEATER

NO TE-The inlet and outlet air openings shaft each have a

free area of at least one square inch (645 mm 2)per 4,000

Btu (1.17 kW) per hour of the total input rating of aft equip-

ment in the enclosure.

FIGURE 4

FIGURE 3

A _ EQUIPMENT IN

TT_. JJ_ CONFINED SPACE

I I "b__JY _ ALLAIRFROM

!lq!ll

NLET AI

II II l . . 1T-T. II II II IL_

I I I I I I I I I I I___J

IIIIIIII II I

I I I I I I I I I I I I

NOTE -Each air duct opening shaft have a free area of at least

one square inch (645 mm 2)per 2,000 Btu (.59 kW) per hour of

the total input rating of aft equipment in the enclosure. If the

equipment room is located against an outside wall and the air

openings communicate directly with the outdoors, each open-

ing shaft have a free area of at least one square inch (645 mm 2)

per 4,000 Btu (1.17 kW) per hour of the total input rating of aft

other equipment in the enclosure.

FIGURE 5

Page 8

-&WARNING

The G60UHV(X) gas furnace can be installed as shipped

in either the upflow position or the horizontal position,

with right-hand or left-hand air discharge.

Select a location that allows for the required clearances

that are listed on the unit nameplate. Also consider gas

supply connections, electrical supply, vent connection,

and installation and service clearances [24 inches (610

mm) at unit front]. The unit must be level.

NOTE -Units with 1/2 hp blower motors are equipped with

three flexible legs and one rigid leg. The rigid leg is

equipped with a shipping bolt and a flat white plastic wash-

er (rather than the rubber mounting grommet used with a

flexible mounting leg). The bolt and washer must be re-

moved before the furnace is placed into operation. Af-

ter the bolt and washer have been removed, the rigid leg

will not touch the blower housing.

NOTE -G60UHV-60D-135 units are equipped with a ship-

ping pad under the blower housing. Remove the shipping

pad prior to operation.

Upflow Applications

Allow for clearances to combustible materials as indicated

on the unit nameplate, Minimum clearances for closet or al-

cove installations are shown in figure 6.

Upflow Application Installation Clearances

Top

Left Side

Bottom

Right Side

Type of Vent Type C Type B1

Connector

Top 1 in. (25 ram) 1 in. (25 ram)

*Front 3 in. (76 ram) 3 in. (76 ram)

Back 0 0

Sides 01- 0

Vent 6 in. (152 ram) 1 in. (25 ram)

Floor 05 05

*Front clearance in alcove installation must be 24 in. (610 ram).

Maintain a minimum of 24 in. (610 ram) for front service access.

SFor installation on a combustible floor, do not install the furnace

directly on carpeting, tile or other combustible materials other

than wood flooring.

1-Left side requires 3 inches if a single wall vent is used on 14-1/2

inch cabinets, or 2 inches if a single wall vent is used on 17-1/2

inch cabinets.

FIGURE 6

Page 9

Return Air -- Upflow Applications

Return air can be brought in through the bottom or either

side of the furnace installed in an upflow application, If the

furnace is installed on a platform with bottom return, make

an airtight seal between the bottom of the furnace and the

platform to ensure that the furnace operates properly and

safely. The furnace is equipped with a removable bottom

panel to facilitate installation,

Markings are provided on both sides of the furnace cabinet

for installations that require side return air. Cut the furnace

cabinet at the maximum dimensions shown on page 2.

NOTE -When air volumes over 1800 cfm (850 L/s) are

required with 60C or 60D models in an upflow applica-

tion, the following return air options are available:

1-Return air from single side with transition which will

accommodate 20 x 25 x I in. (508 x 635 x 25 ram) clean-

able air filter. (Required to maintain proper air velocity.)

See figure 7.

2-Return air from single side with optional RAB Return

Air Base. See figure 8.

3-Return air from bottom.

4-Return air from both sides.

5-Return air from bottom and one side.

Refer to Engineering Handbook for additional information,

Side Return Air

(with transition and filter)

20" X 25" X 1"

(508mm X635mm X 25mm)

Cleanable Filter

Return Air

Plenum

FIGURE 7

Optional Return Air Base

(Upflow Applications Only -- For use with B, Cand D cabinets only)

AIR FLOW

14 "-_

7-1/4 (184)

17-1/2 (446) RAB-B (98M60)

21 (533) RAB-C (98M58)

24-1/2 (622) RAB-D (98M59)

FRONT VIEW

OPTIONAL RAB

RETURN AIR BASE 7/8 .._

(22)

m 7

4;-.91-- 1 23 (584) f =1

102)1 Overall 1Minimum

(Maximum) 11 (279) I

2 Maximun_

1Unit side return air 1A 1356)_

Opening ___jl__ _

5-5/8 SIDE RETURN

(143) AIR OPENINGS

(Either Side)

_1_ 23 (584)

122-7-16

(570)

Overall

'Maximum)

_J_

._ _ 3/4

(19)

91--- 27-5/8 (702)

SIDE VIEW

NOTE- Optional Side Return Air Filter Kits are not for use with RAB Return Air Base.

1 Both the unit return air opening and the base return air opening must be covered by a single plenum or IAQ cabinet.

Minimum unit side return air opening dimensions for units requiring 1800 cfm or more of air (W x H): 23 x 11 in. (584 x 279 mm).

The opening can be cut as needed to accommodate plenum or IAQ cabinet while maintaining dimensions shown.

Side return air openings must be cut in the field. There are cutting guides stenciled on the cabinet for the side return air

opening. The size of the opening must not extend beyond the markings on the furnace cabinet.

2 To minimize pressure drop, the largest opening height possible (up to 14 inches) is preferred.

NOTE- Optional Side Return Air Filter Kits are not for use with RAB Return Air Base.

FIGURE 8

Page 10

Removingthe Bottom Panel

Remove the two screws that secure the bottom cap to the

furnace. Pivot the bottom cap down to release the bottom

panel, Once the bottom panel has been removed, reinstall

the bottom cap. See figure 9,

Removing the Bottom Panel

Screw

Bottom Cap

Bottom

FIGURE 9

Leveling an Upflow Unit

When the side return air inlets are used in an upflow ap-

plication, it may be necessary to install leveling bolts on the

bottom of the furnace. Use field-supplied corrosion-resist-

ant 5/16 inch machine bolts (4) and nuts (8), See figure 10,

NOTE -The maximum length of the bolt is 1-1/2 inches.

1 - Lie the furnace on its back and drill a 5/16 inch diame-

ter hole in each corner of the furnace's bottom, See fig-

ure 10 for the correct location of the holes, Drill through

the bottom panel and the bottom flange of the cabinet.

2 - Install one bolt and two nuts into each hole. Screw the

first nut onto a bolt and then insert the bolt into a hole. A

fiat washer may be added between the nut and the bot-

tom of the unit.

3 - Screw another nut onto the bolt on the inside of the fur-

nace base. A fiat washer may be added between the

nut and the bottom of the unit,

4 - Adjust the outside nut to the appropriate height and

tighten the inside nut to secure the arrangement,

Leveling Bolt Installation

Inches (mm)

3/8

(10)

Furnace Front

3/8 1-3/4

(44)

1-3/4

(44) Leveling Bolt

Locations

Leveling Bolt (3/8)

3/8 1-3/4

(10) (44)

1-3t4 (44)

FIGURE 10

Horizontal Applications

The G60UHV(X) furnace can be installed in horizontal ap-

plications,

Allow for clearances to combustible materials as indicated

on the unit nameplate. Minimum clearances for closet or al-

cove installations are shown in figure 11,

Horizontal Application

Installation Clearances

Top

Left End Right End

Vent Connector

Type

Top

*Front

Back

Ends

Vent

Bottom

Type C

3in. (76 ram)

2 in. (51 ram)

6in. (152 ram)

Type B1

3in, (76 ram)

2 in. (51 ram)

1in. (25 ram)

*Front clearance in alcove installation must be 24 in. (610 ram).

Maintain a minimum of 24 in. (610 ram) for front service access.

SFor installations on a combustible floor, do not install the furnace

directly on carpeting, tile or other combustible materials other

than wood flooring.

FIGURE 11

Page 11

Thisfurnacemaybeinstalledineitheranatticoracrawl-

space.Eithersuspendthefurnacefromroofraftersor

floorjoists,asshowninfigure12,orinstallthefurnaceon

aplatform,asshownin figure13.Theunitmustbesup-

portedat bothendsandbeneaththeblowerdecktopre-

ventsagging.

Typical Horizontal Application

Unit Suspended in Attic or Crawlspace

Leave sufficient clearance between rod and unit to

remove access panel.

FIGURE 12

NOTE -Heavy-gauge perforated sheet metal straps

(plumbers' straps) may be used to suspend the unit from

roof rafters or ceiling joists. When straps are used to sus-

pend the unit in this way, support must be providedfor both

the ends and the middle of the furnace to prevent sagging.

The straps must not interfere with the plenum or exhaust

piping installation. Securing screws should be 1/2 inch

from the top edge and 1-1/2 inch from the side edge in all

cases. Cooling coils and supply and return air plenums

must be supported separately.

NOTE -When the furnace is installed on a platform in a

crawlspace, it must be elevated enough to avoid water

damage and to allow the evaporator coil to drain.

Return Air -- Horizontal Applications

Return air can be brought in through the end of a furnace

installed in a horizontal application. The furnace is

equipped with a removable bottom panel to facilitate

installation. See figure 9.

Horizontal Application

Unit Installed on Platform

NOTE -Line contact is permis-

sible. See the unit nameplate for

clearances.

\\\"x,

FIGURE 13

WARNING

_&WARNING

Page 12

Thisunitisnotequippedwitha filteror rack.A field-pro-

videdhigh-velocityfilterisrequiredfortheunittooperate

properly,Table1listsrecommendedfiltersizes,

A filtermustbein placeanytimetheunitisoperating,

TABLE1

Furnace

Cabinet Size

14-1/2"

17-1/2"

21"

24-1/2"

Filter Size

Side Return

16X25X1 (1)

16X25X1 (2)

Bottom Return

14X25X 1 (1)

16X25X 1 (1)

20 X 25 X 1 (1)

24 X 25 X 1 (1)

Use industry-approved standards (such as those pub-

lished by Air Conditioning Contractors of America or Ameri-

can Society of Heating, Refrigerating and Air Conditioning

Engineers) to size and install the supply and return air duct

system. This will result in a quiet and low-static system that

has uniform air distribution.

NOTE -Do not operate the furnace with an external static

pressure that exceeds 0.8 inches w.c. Higher external stat-

ic pressures may cause erratic tim# operation.

Supply Air Plenum

If the furnace is installed without a cooling coil, a removable

access panel must be installed in the supply air duct. The

access panel should be large enough to permit inspection

(either by smoke or reflected light) of the heat exchanger

for leaks after the furnace is installed. The furnace access

panel must always be in place when the furnace is operat-

ing and it must not allow leaks into the supply air duct sys-

tem.

Return Air Plenum

Return air must not be drawn from a room where this

furnace, or any other gas appliance (ie., a water heat-

er), is installed. When return air is drawn from a room, a

negative pressure is created in the room. If a gas ap-

pliance is operating in a room with negative pressure, the

flue products can be pulled back down the vent pipe and

into the room. This reverse flow of the flue gas may result

in incomplete combustion and the formation of carbon

monoxide gas. This toxic gas might then be distributed

throughout the house by the furnace duct system.

In upfiow applications, the return air can be brought in

through the bottom or either side of the furnace. If a fur-

nace with bottom return air is installed on a platform, make

an airtight seal between the bottom of the furnace and the

platform to ensure that the unit operates properly and

safely. Use fiberglass sealing strips, caulking, or equiva-

lent sealing method between the plenum and the furnace

cabinet to ensure a tight seal. Ira filter is installed, size the

return air duct to fit the filter frame.

A 4-inch diameter flue transition is factory-installed on the

combustion air inducer outlet of all models. Modifying or

removing the flue transition will cause the unit to oper-

ate unsafely and will void the unit certification. The

vent connector does not require insulation.

The combustion air inducer may be rotated clockwise or

counterclockwise by 90° to allow for top or side vent dis-

charge in all applications. When the unit is installed, the flue

transition must be in the 9 o'clock, 12 o'clock or 3 o'clock

position. The unit will not vent properly with the flue

transition pointed down in the 6 o'clock position. Re-

move the four mounting screws, rotate the assembly (in-

cluding the gasket), then reinstall the mounting screws.

See figure 14. Use the provided wire tie to bundle the pres-

sure switch wires with the inducer motor power leads.

Route the wires away from moving parts and the heat

of the inducer motor to prevent damage to the wires.

Flue Transition

(Do not remove)

Mounting Screws

(Remove)

Combustion Air Inducer

(Upflow Position)

MOUNTING SCREW% 90 °

______ (Remove) _

FIGURE 14

Optional Flue Outlet

(Horizontal Installation)

Top Cap -----_.

Flue Outlet _-J_'J

Hole

(Reattach IIII/! I

Cutout Here)

Top View of Furnace

Supply Air

Opening

FIGURE 15

Optional

Flue Outlet

Page 13

Usesheetmetalshearstoremovethecutoutfromtheside

ofthecabinet.Usethetwoprovidedsheetmetalscrewsto

installthecutoutonthetopcaptocovertheoriginalflue

outletopening.Seefigure15,

TheG60UHV(X)seriesunitsareclassifiedasfan-assisted

CategoryI furnaceswhenverticallyventedaccordingto

thelatesteditionof NationalFuelGasCode(NFPA54/

ANSI Z223.1) in the USA and the current standards of CSA

B149 Natural Gas and Propane Installation Codes in Can-

ada. A fan-assisted Category I furnace is an appliance

equipped with an integral mechanical means to either draw

or force combustion products through the combustion

chamber and/or heat exchanger.

NQ TE -Use these instructions as a guide. They do not su-

persede local codes, This furnace must be vented accord-

ing to all local codes these installation instructions, and the

provided venting tables in these instructions

The venting tables in this manual were extracted from the

National Fuel Gas Code (NFPA 54 /ANSI Z223,1 ) and are

provided as a guide for proper vent installation, Proper ap-

plication, termination, construction and location of vents

must conform to local codes having jurisdiction. In the ab-

sence of local codes, the NFGC serves as the defining doc-

ument,

Refer to the tables and the venting information contained in

these instructions to properly size and install the venting

system,

A, IMPORTANT

AWARNING

VENT CONNECTION

VENT

PIPE

FLUE TRANSITIC

COLLAR

FURNACE

FIGURE 16

Use self-drilling sheet metal screws or a mechanical fas-

tener to firmly secure the vent pipe to the round collar of the

flue transition. If self-drilling screws are used to attach the

vent pipe, it is recommended that three be used. Drive one

self-drilling screw through the front and one through each

side of the vent pipe and collar. See figure 16.

Install the first vent connector elbow at a minimum of six

inches (152 mm) from the furnace vent outlet,

Venting Using a Masonry Chimney

The following additional requirements apply when a lined

masonry chimney is used to vent this furnace.

Masonry chimneys used to vent Category I central fur-

naces must be either tile-lined or lined with a listed metal

lining system or dedicated gas vent, Unlined masonry

chimneys are prohibited, See figures 17 and 18 for com-

mon venting.

A chimney with one or more sides exposed to the outside of

the structure is considered to be an exterior chimney.

An exterior masonry chimney that is not tile-lined must be

lined with B1 vent or a listed insulated flexible metal vent.

An exterior tile-lined chimney that is sealed and capped

may be lined with a listed uninsulated flexible metal vent,

If the existing chimney will not accommodate a listed metal

liner, either the chimney must be rebuilt to accommodate

one of these liners or an alternate approved venting meth-

od must be found.

G60UHV units installed in upflow applications may be

vented into a tile-lined masonry chimney without using a

listed metal liner, provided that the optional masonry chim-

ney vent adapter kit (18M79) is used. Instructions provided

with the kit must be followed exactly.

Insulation for the flexible vent pipe must be an encapsu-

lated fiberglass sleeve recommended by the flexible vent

pipe manufacturer, See figure 17,

Common Venting Using Metal-Lined Masonry Chimney

l SEALjD

MAX. LENGTH

+- SEE NOTE 1II

BELOW.

5_!15o,) MINLENGTH-AS II

rnm]rnurn SHORT AS PRACTICAL _i i EXTERIOR

___v i_-'_- ; CH_MNEYW_TH

II METAL

LINER

I',

4,n+{,02o, J

SEALED FIREPLACE

OPENING

NOTE 1-Refer to the provided venting tables for installations in the USA

and the venting tables in CSA-B149 for installations Canada.

NOTE 2 -Either single-walled or doable-walled vent connector may be

used. Refer to the capacity requirements shown in the provided venting

tables for installations in USA and the venting tables in current

CSA-B149 for installations in Canada.

FIGURE 17

Page 14

Common Venting Using Tile-Lined Interior Masonry Chimney and Combined Vent Connector

MINIMUM LENGTH = AS SHORT AS PRACTICAL. _N/ I I INTERIOR TILE=LINED

FOR MAXIMUM LENGTH SEE NOTE TO LEFT I I [ I MASONRY CHIMNEY

NOTE- Refer to provided venting tables I I J

for installations in the USA and the i= =" I ]I]J

venting tables in current CSA-B149 for F 1 ! 'l IJ_ _ _"_

installations in Canada. _ ' I_F_ 4--4 [/_ ]

H I ........... _ I A_ I NOTE-thechimneymustbeproperly

H _T L-_-- --_ I _ I ]sizedperprovided venting tables or

___ _ _ lined with llsted metal llning system.

I I FURNACE IVENT I

I I _ CONNECTORI I_

Ap_THAENRcE ._ SEE NOTE 1BELOW iiiMANDN_INTLYL A CE

NOTE -Either single-walled or double-walled vent connector may be used. Refer to the capacity requirements as shown in the pro-

vided venting tables for installations in USA and the venting tables in current CSA-B149 for installations in Canada.

FIGURE 18

DO NOT insulate the space between the liner and the Do not install a manual damper, barometric draft regulator,

chimney wall with puffed mica or any other loose gran-

ular insulating material

klMPORTANT

A fan-assisted furnace may be commonly vented into an

existing lined masonry chimney if the following conditions

are met:

• The chimney is currently serving at least one drafthood

equipped appliance

• The vent connectors and chimney are sized according

to the provided venting tables for the USA, and the ap-

propriate venting tables in the standards of CSA B149

Natural Gas and Propane Installation Codes in Cana-

da.

If type B1 double-wall vent is used inside a chimney, no oth-

er appliance can be vented into the chimney. The outer wall

of type B1 vent pipe must not be exposed to flue products.

A type B1 vent or masonry chimney liner shall terminate

above the roof surface with a listed cap or a listed roof as-

sembly according to the terms of their respective listings

and the vent manufacturer's instructions.

When inspection reveals that an existing chimney is not

safe for the intended purpose, it shall be rebuilt to conform

to nationally recognized standards, lined or relined with

suitable materials, or replaced with a gas vent or chimney

suitable for venting G60UHV(X) series units. The chimney

passageway must be checked periodically to ensure that it

is clear and free of obstructions.

or flue restrictor between the furnace and the chimney.

Never connect a Category I appliance to a chimney that is

servicing a solid-fuel appliance. If a fireplace chimney flue

is used to vent this appliance, the fireplace opening must

be permanently sealed.

A type B or listed chimney lining system that passes

through an unused masonry chimney flue is not considered

to be exposed to the outdoors.

General Venting Requirements

Vent all G60UHV(X) furnaces according to these instruc-

tions:

1 - Vent diameter recommendations and maximum allow-

able piping runs are found in the provided venting tables

for the USA, and the appropriate venting tables in the

standards of CSA B149 Natural Gas and Propane

Installation Codes for Canada.

2 - In no case should the vent or vent connector diameter

be less than the diameter specified in the provided

venting tables for the USA, and the appropriate venting

tables in the standards of CSA B149 Natural Gas and

Propane Installation Codes for Canada.

3 - The minimum vent capacity determined by the sizing

tables must be less than the low fire input rating and the

maximum vent capacity must be greater than the high

fire input rating.

4 - Single appliance vents - If the vertical vent or tile-lined

chimney has a larger diameter or flow area than the

vent connector, use the vertical vent diameter to de-

termine the minimum vent capacity and the vent

connector diameter to determine the maximum vent

capacity, The flow area of the vertical vent, however,

shall not exceed 7 times the flow area of the listed ap-

pliance categorized vent area, drafthood outlet area or

flue collar area unless designed according to approved

engineering methods.

Page 15

5- Multiple appliance vents - The flow area of the largest

section of vertical vent or chimney shall not exceed 7

times the smallest listed appliance categorized vent

area, drafthood outlet area or flue collar area unless de-

signed according to approved engineering methods.

6 - The entire length of single wall metal vent connector

shall be readily accessible for inspection, cleaning,

and replacement.

7 - Single appliance venting configurations with zero lat-

eral lengths (tables 3 and 4) are assumed to have no

elbows in the vent system. For all other vent configura-

tions, the vent system is assumed to have two 90 ° el-

bows. For each additional 90° elbow or equivalent (for

example two 45° elbows equal one 90° elbow) beyond

two, the maximum capacity listed in the venting table

should be reduced by 10% (0.90 x maximum listed ca-

pacity).

8 - The common venting tables (5, 6, 7, and 8) were gen-

erated using a maximum horizontal vent connector

length of 1-1/2 feet (.46 m) for each inch (25 mm) of

connector diameter as follows:

TABLE 2

Connector Diameter Maximum Horizontal

inches (mm) Connector Length feet (m)

3 (76) 4-1/2 (1.37)

4 (102) 6 (1.83)

5 (127) 7-1/2 (2.29)

6 (152) 9 (2.74)

7 (178) 10-1/2 (3.20)

9 - If the common vertical vent is offset, the maximum

common vent capacity listed in the common venting

tables should be reduced by 20%, the equivalent dtwo

90° elbows (0.80 x maximum common vent capacity).

The horizontal length of the offset shall not exceed

1-1/2 feet (.46 m) for each inch (25 mm) of common

vent diameter.

10 - The vent pipe should be as short as possible with the

least number of elbows and angles required to com-

plete the job. Route the vent connector to the vent us-

ing the shortest possible route.

11 - A vent connector shall be supported without any dips

or sags and shall slope a minimum of 1/4 inch (6.4 mm)

per linear foot (305 mm) of connector, back toward the

appliance.

12 - Vent connectors shall be firmly attached to the furnace

flue collar by self-drilling screws or other approved

means, except vent connectors of listed type B vent

material which shall be assembled according to the

manufacturer's instructions. Joints between sections

of single wall connector piping shall be fastened by

screws or other approved means.

13-When the vent connector used for Category I ap-

pliances must be located in or pass through a crawl-

space or other areas which may be cold, that portion of

the vent connector shall be constructed of listed

double-wall type B vent material or material having

equivalent insulation qualities.

14 - All venting pipe passing through floors, walls, and ceil-

ings must be installed with the listed clearance to com-

bustible materials and be fire stopped according to lo-

cal codes. In absence of local codes, refer to NFGC

(Z223.1).

15 - No portion of the venting system can extend into, or pass

through any circulation air duct or plenum.

16- Vent connectors serving Category I appliances shall

not be connected to any portion of mechanical draft

systems operating under positive pressure such as

Category Ill or IV venting systems.

17 - If vent connectors are combined prior to entering the

common vent, the maximum common vent capacity

listed in the common venting tables must be reduced by

10%, the equivalent of one 90° elbow (0.90 x maximum

common vent capacity).

18 - The common vent diameter must always be at least as

large as the largest vent connector diameter.

19 - In no case, shall the vent connector be sized more than

two consecutive table size diameters over the size of

the draft hood outlet or flue collar outlet.

20 - Do not install a manual damper, barometric draft regu-

lator or flue restrictor between the furnace and the

chimney.

21 - When connecting this appliance to an existing dedi-

cated or common venting system, you must inspect the

venting system's general condition and look for signs

of corrosion. The existing vent pipe size must conform

to these instructions and the provided venting tables

for the USA, and the appropriate venting tables in the

standards of CSA B149 Natural Gas and Propane

Installation Codes for Canada. If the existing venting

system does not meet these requirements, it must be

resized.

Page 16

TABLE 3

Capacity of Type B Double-Wall Vents with Type B Double-Wall Connectors

Serving a Single Category I Appliance

Vent and Connector Diameter -D (inches)

Height Lateral 3 Inch 4 Inch 5 Inch 6 Inch

H L

(feet) (feet) Appliance Input Rating in Thousands of Btu Per Hour

MIN MAX MIN MAX MIN MAX MIN MAX

0 0 78 0 152 0 251 0 375

2 13 51 18 97 27 157 32 232

64 21 49 30 94 39 153 50 227

6 25 46 36 91 47 149 59 223

0 0 84 0 165 0 276 0 415

2 12 57 16 109 25 178 28 263

85 23 53 32 103 42 171 53 255

8 28 49 39 98 51 164 64 247

0 0 88 0 175 0 295 0 447

2 12 61 17 118 23 194 26 289

10 5 23 57 32 113 41 187 52 280

10 30 51 41 104 54 176 67 267

0 0 94 0 191 0 327 0 502

2 11 69 15 136 20 226 22 339

15 5 22 65 30 130 39 219 49 330

10 29 59 40 121 51 206 64 315

15 35 53 48 112 61 195 76 301

0 0 97 0 202 0 349 0 540

2 10 75 14 149 18 250 20 377

5 21 71 29 143 38 242 47 367

20 10 28 64 38 133 50 229 62 351

15 34 58 46 124 59 217 73 337

20 48 52 55 116 69 206 84 322

0 0 100 0 213 0 374 0 587

2 9 81 13 166 14 283 18 432

5 21 77 28 160 36 275 45 421

30 10 27 70 37 150 48 262 59 405

15 33 64 44 141 57 249 70 389

20 56 58 53 132 66 237 80 374

30 NR NR 73 113 88 214 104 346

NOTE -Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other

vent configurations, the vent system is assumed to have two 90 °elbows. For each additional 90 °elbow or equivalent (for example two 45 °

elbows equal one 90 ° elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10 percent (0.90 x maxi-

mum listed capacity).

Page 17

TABLE 4

Capacity of Type B Double-Wall Vents with Single-Wall Metal Connectors

Serving a Single Category I Appliance

Vent and Connector Diameter - D (inches)

Height Lateral 3 Inch 4 Inch 5 Inch 6 Inch

H L

(feet) (feet) Appliance Input Rating in Thousands of Btu Per Hour

MIN MAX MIN MAX MIN MAX MIN MAX

0 38 77 59 151 85 249 126 373

2 39 51 60 96 85 156 123 231

64 NR NR 74 92 102 152 146 225

6 NR NR 83 89 114 147 163 220

0 37 83 58 164 83 273 123 412

2 39 56 59 108 83 176 121 261

85 NR NR 77 102 107 168 151 252

8 NR NR 90 95 122 161 175 243

0 37 87 57 174 82 293 120 444

2 39 61 59 117 82 193 119 287

10 5 52 56 76 111 105 185 148 277

10 NR NR 97 100 132 171 188 261

0 36 93 56 190 80 325 116 499

2 38 69 57 136 80 225 115 337

15 5 51 63 75 128 102 216 144 326

10 NR NR 95 116 128 201 182 308

15 NR NR NR NR 158 186 220 290

0 35 96 54 200 78 346 114 537

2 37 74 56 148 78 248 113 375

5 50 68 73 140 100 239 141 363

20 10 NR NR 93 129 125 223 177 344

15 NR NR NR NR 155 208 216 325

20 NR NR NR NR 186 192 254 306

0 34 99 53 211 76 372 110 584

2 37 80 55 164 76 281 109 429

5 49 74 72 157 98 271 136 417

30 10 NR NR 91 144 122 255 171 397

15 NR NR 115 131 151 239 208 377

20 NR NR NR NR 181 223 246 357

30 NR NR NR NR NR NR NR NR

NOTE -Single appfiance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other

vent configurations, the vent system is assumed to have two 90°elbows. For each additional 90°elbow or equivalent (for example two 45 °

elbows equal one 90 °elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10percent (0.90 x maxi-

mum listed capacity).

Page 18

TABLE 5

Vent Connector Capacity

Type B Double-Wall Vents with Type B Double-Wall Connectors

Serving Two or More Category I Appliances

Vent and Connector Diameter -D (inches)

Vent Connector

Height Rise 3 Inch 4 Inch 5 Inch 6 Inch

H R Appliance Input Rating in Thousands of Btu Per Hour

(feet) (feet) MIN MAX MIN MAX MIN MAX MIN MAX

1 22 37 35 66 46 106 58 164

6 2 23 41 37 75 48 121 60 183

3 24 44 38 81 49 132 62 199

1 22 40 35 72 49 114 64 176

8 2 23 44 36 80 51 128 66 195

3 24 47 37 87 53 139 67 210

1 22 43 34 78 49 123 65 189

10 2 23 47 36 86 51 136 67 206

3 24 50 37 92 52 146 69 220

1 21 50 33 89 47 142 64 220

15 2 22 53 35 96 49 153 66 235

3 24 55 36 102 51 163 68 248

1 21 54 33 99 46 157 62 246

20 2 22 57 34 105 48 167 64 259

3 23 60 35 110 50 176 66 271

1 20 62 31 113 45 181 60 288

30 2 21 64 33 118 47 190 62 299

3 22 66 34 123 48 198 64 309

TABLE 6

Common Vent Capacity

Type B Double-Wall Vents with Type B Double-Wall Connectors

Serving Two or More Category I Appliances

Common Vent Diameter - D (inches)

Vent

Height 4 Inch 5 Inch 6 Inch 7 Inch

H Appliance Input Rating in Thousands of Btu Per Hour

(feet) FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT

6 92 81 140 116 204 161 309 248

8 101 90 155 129 224 178 339 275

10 110 97 169 141 243 194 367 299

15 125 112 195 164 283 228 427 352

20 136 123 215 183 314 255 475 394

30 152 138 244 210 361 297 547 459

Page 19

TABLE 7

Vent Connector Capacity

Type B Double-Wall Vents with Single-Wall Metal Connectors

Serving Two or More Category I Appliances

Vent and Connector Diameter - D (inches)

Vent Connector

Height Rise 3 Inch 4 Inch 5 Inch 6 Inch

H R Appliance Input Rating in Thousands of Btu Per Hour

(feet) (feet) MIN MAX MIN MAX MIN MAX MIN MAX

I NR NR NR NR NR NR NR NR

6 2 NR NR NR NR NR NR 168 182

3 NR NR NR NR 121 131 174 198

1 NR NR 79 87 116 138 177 214

15 2 NR NR 83 94 121 150 185 230

3 NR NR 87 100 127 160 193 243

1 47 60 77 110 113 175 169 278

30 2 50 62 81 115 117 185 177 290

3 54 64 85 119 122 193 185 300

TABLE 8

Common Vent Capacity

Type B Double-Wall Vents with Single-Wall Metal Connectors

Serving Two or More Category I Appliances

Common Vent Diameter - D (inches)

Vent

Height 4 Inch 5 Inch 6 Inch 7 Inch

H Appliance Input Rating in Thousands of Btu Per Hour

(feet) FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT FAN + FAN FAN + NAT

6 89 78 136 113 200 158 304 244

8 98 87 151 126 218 173 331 269

10 106 94 163 137 237 189 357 292

15 121 108 189 159 275 221 416 343

20 131 118 208 177 305 247 463 383

30 145 132 236 202 350 286 533 446

Removal of the Furnace from Common Vent

In the event that an existing furnace is removed from a

venting system commonly run with separate gas ap-

pliances, the venting system is likely to be too large to

properly vent the remaining attached appliances,

Conduct the following test while each appliance is operat-

ing and the other appliances (which are not operating) re-

main 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 re-

quirements section.

1 - Seal any unused openings in the common venting sys-

tem,

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,

3 - Close all building doors and windows and all doors be-

tween the space in which the appliances remaining

connected to the common venting system are located

and other spaces of the building. Turn on clothes dry-

ers 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 oper-

ate at maximum speed. Do not operate a summer ex-

haust fan. Close fireplace dampers.

4 - Follow the lighting instructions, Turn on the appliance

that is being inspected, Adjust the thermostat so that

the appliance operates continuously,

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,

6 - After determining that each appliance connected to the

common venting system is venting properly, (step 3)

return all doors, widows, exhaust fans, fireplace damp-

ers, and any other gas-burning appliances to their pre-

vious mode of operation,

7 - If a venting problem is found during any of the preced-

ing tests, the common venting system must be modi-

fied to correct the problem,

Page 20

Resizethecommonventingsystemto theminimum

ventpipesizedeterminedbyusingtheappropriate

tablesinAppendixG.(Theseareinthecurrentstan-

dardsoftheNationalFuelGasCodeANSIZ223.1in

theUSA,andtheappropriateCategory1NaturalGas

andPropaneappliancesventingsizingtablesinthe

currentstandardsof theCSAB149NaturalGasand

PropaneInstallationCodesinCanada.)

XkCAUTION

3 - The gas piping must not run in or through air ducts,

clothes chutes, gas vents or chimneys, dumb waiters,

or elevator shafts.

4 - The piping should be sloped 1/4 inch (6,4 mm) per 15

feet (4,57 m) upward toward the meter from the fur-

nace. The piping must be supported at proper intervals

[every 8 to 10 feet (2.44 to 3.01 m)] with suitable hang-

ers or straps, Install a drip leg inside vertical pipe runs

to the unit.

5 - A 1/8" N.RT. plugged tap or pressure post is located

on the gas valve to facilitate test gauge connection.

See figures 26 and 27.

6 - In some localities, codes may require the installation of

a manual main shut-off valve and union (furnished by

the installer) external to the unit, The union must be of

the ground joint type.

Gas Supply

1 - This unit is shipped standard for left or right side instal-

lation of gas piping (or top entry in horizontal applica-

tions). Connect the gas supply to the piping assembly.

2 - When connecting the gas supply piping, consider fac-

tors such as length of run, number of fittings, and fur-

nace rating to avoid excessive pressure drop. Table 9

lists recommended pipe sizes for typical applications.

klMPORTANT

NOTE -If emergency shutoff is necessa04 shut off the main

manual gas valve and disconnect main power to the fur-

nace. The installer should properly label these devices.

Nominal

IronPipe Internal

Size Diameter

inches inches

(ram) (ram)

3/8

(9.53)

1/2

(12.7)

3/4

(19.05)

(25.4)

1-1/4

(31.75)

1-1/2

(38.1)

(50.8)

2-1/2

(63.5)

(76.2)

NOTE -Capacity given in

TABLE 9

Gas Pipe Capacity -ft3/hr (m3/hr)

Length of Pipe - feet (m)

10 20 30 40 50 60 70 80 90 lOO

(3.048) (6.096) (9.144) (12.192) (15.240) (18.288) (21.336) (24.384) (27.432) (30.480)

.493 95 65

(12.522) (2.69) (1.84)

.622 175 120

(17.799) (4.96) (3.40)

.824 360 250

(20.930) (10.19) (7.08)

1.049 680 465

(26.645) (919.25) (13.17)

1.380 1400 950

(35.052) (39.64) (26.90)

1.610 2100 460

(40.894) (59.46) (41.34)

2.067 3950 2750

(52.502) (111.85) (77.87)

2.469 6300 4350

(67.713) (178.39) (123.17)

3.068 11000 7700

(77.927) (311.48) (218.03)

cubic feet

(1.47)

(2.75)

2OO

(5.66)

375

(10.62)

77O

(21.80)

1180

(33.41)

2200

(62.30)

3520

(99.67)

6250

(176.98)

(1.27)

(2.32)

170

(4.81)

32O

(9.06)

66O

(18.69)

990

(28.03)

1900

(53.80)

3000

(84.95

5300

(150.07)

(1.13)

(2.07)

151

(4.28)

285

(8.07)

580

(16.42)

9OO

(25.48)

1680

(47.57)

2650

(75.04)

4750

(134.50)

(1.02)

(1.87)

138

(3.91)

26O

(7.36)

53O

(15.01)

810

(22.94)

1520

(43.04)

2400

(67.96)

4300

(121.76)

(.73)

(1.73)

125

(3.54)

24O

(6.80)

490

(13.87)

75O

(21.24)

1400

(39.64)

2250

(63.71)

3900

(110.43)

(m3 ) of gas per hour and based on O.60 specific gravity gas.

(.88)

(1.61)

118

(3.34)

22O

(6.23)

46O

(13.03)

69O

(19.54)

1300

(36.81)

2050

(58.05)

3700

(104.77)

(.82)

(1.5o)

110

(3.11)

2O5

(5.80)

430

(12.18)

65O

(18.41)

1220

(34.55)

1950

(55.22)

3450

(97.69)

(.76)

(1.42)

103

(2.92)

195

(5.52)

400

(11.33)

62O

(17.56)

1150

(32.56)

1850

(52.38)

3250

(92.03)

Page 21

MANUAL

MAIN SHUT-OFF

VALVE

(With 1/8 in. NPT

Plugged Tap Shown)

GROUND

JOINT

UNION

Left Side Piping

(Standard)

AUTOMATIC

GAS VALVE

(with manual

shut-off valve)

AUTOMATIC MANUAL

GAS VALVE SHUT-OFF

(with manual VALVE

shuboff valve) (With 1/8 in. NPT

Plugged Tap

Shown)

JOINT

UNION

_DRIP LEG

DRIP LEG

FIELD

PROVIDED

ANDINSTALLED

FIGURE 19

Leak Check

After gas piping is completed, carefully check all piping

connections (factory- and field-installed) for gas leaks, Use

a leak detecting solution or other preferred means.

NOTE -If emergency shutoff is necessa04 shut off the main

manual gas valve and disconnect the main power to the

furnace. The installer should properly label these devices.

Right Side Piping

(Alternate)

ELECTROSTATIC DISCHARGE (ESD)

Precautions and Procedures

kCAUTION

,CAUTION

The furnace must be isolated from the gas supply system

by closing #s individual manual shut-off valve during any

pressure testing of the gas supply system at pressures less

than or equal to 1/2 psig (3.48 kPa, 14 inches w.c.).

,IMPORTANT

MANUAL MAIN

SHUT-OFF VALVE

WILL NOT HOLD

NORMAL TEST

PRESSURE |

CAP

ISOLATE

GAS VALVE

FIGURE 20

\FURNACE

The unit is equipped with a field make-up box, The make-

up box may be moved to the right side of the furnace to fa-

cilitate installation, If the make-up box is moved to the right

side, the excess wire must be pulled into the blower

compartment, Secure the excess wire to the existing harn-

ess to protect it from damage.

INTERIOR MAKE-UP BOX INSTALLATION

MAKE-UP

BOX

FIGURE 21

Page 22

INTERIORMAKE-UP BOX INSTALLATION

Left side MAKE-UP

JBOX

FIGURE 22

Refer to figure 23 for schematic wiring diagram and trou-

bleshooting and table 10 and figure 24 for field wiring,

1 - Select circuit protection and wire size according to the

unit nameplate. The power supply wiring must meet

Class I restrictions,

2 - Holes are on both sides of the furnace cabinet to facili-

tate wiring,

3 - Install a separate disconnect switch (protected by ei-

ther fuse or circuit breaker) near the furnace so that

power can be turned off for servicing,

4 - Before connecting the thermostat or the power wiring,

check to make sure the wires will be long enough for

servicing at a later date, Remove the blower access

panel to check the length of the wire,

5- Complete the wiring connections to the equipment.

Use the provided unit wiring diagram and the field wir-

ing diagrams shown in table 10 and figure 24, Use

18-gauge wire or larger that is suitable for Class II ra-

ting for thermostat connections,

6 - Electrically ground the unit according to local codes or,

in the absence of local codes, according to the current

National Electric Code (ANSI/NFPA No, 70) for the

USA and current Canadian Electric Code part 1 (CSA

standard C22.1) for Canada, A green ground wire is

provided in the field make-up box,

NOTE- The G6OUHV(X) furnace contains electron-

ic compon en ts that are polarity sen sitive, Make sure

that the furnace is wired correctly and is properly

grounded,

7 - One line voltage "EAC" 1/4" spade terminal is provided

on the furnace control board. Any electronic air cleaner

rated up to one amp can be connected to this terminal

with the neutral leg dthe circuit being connected to the

one of the provided neutral terminals. See figure 25 for

control board configuration, This terminal is energized

when the indoor blower is operating,

8- One line voltage *'HUM" 1/4" spade terminal is pro-

vided on the furnace control board. Any humidifier

rated up to one amp can be connected to this terminal

with the neutral leg of the circuit being connected to

one of the provided neutral terminals. See figure 25 for

control board configuration. This terminal is energized

in the heating mode whenever the combustion air in-

ducer is operating.

9 - One 24V "H" terminal is provided on the furnace control

board terminal block. Any humidifier rated up to 0.5

amp can be connected to this terminal with the ground

leg of the circuit being connected to either ground or

the "C" terminal. See figure 25 for control board config-

uration.

10-Install the room thermostat according to the instruc-

tions provided with the thermostat, See table 10 for

field wiring connections in varying applications. If the

furnace is being matched with a heat pump, refer to the

instruction packaged with the dual fuel thermostat,

Indoor Blower Speeds

1 - When the thermostat is set to "FAN ON," the indoor

blower will run continuously at approximately 38% of

the second-stage cooling speed when there is no cool-

ing or heating demand,

2 - When the G60UHV(X) is running in the heating mode,

the indoor blower will run on the heating speed desig-

nated by the positions of DIP switches 11 and 12.

3 - When there is a cooling demand, the indoor blower will

run on the cooling speed designated by the positions

of DIP switches 5 and 6,

Page 23

Thermostat

1 Heat/1 Cool

NOTE -Use DiP

switch 2to set

second-stage

heat ON delay.

QFF-IO minutes.

ON-15 minutes.

1 Heat /2 Cool

NOTE -Use DIP

switch 2 to set

second-stage

heat QN delay.

OFF-IO minutes.

ON-15 minutes.

1 Heat /2 Cool

with t'stat with

humidity control

NOTE -Use DIP

switch 2 to set

second-stage

heat ON delay.

QFF-fO minutes.

ON-15 minutes.

DIP Switch 1

TABLE 10

Field Wiring Applications

Jumper Settings (See figure 25)

W915

Two-Stage

Cooling

Intact

Cut

W914 Dehu-

midification

or Harmony

III

Intact

Cut

W951

Heat Pumps

Intact

Wiring Connections

Sl CONTROL

T'STAT TERM. STRIP

®______

® _,

Sl CONTROL

T'STAT TERM. STRIP

® ®

@ ®

@. @

T'STAT

OUTDOOR

UNIT

OUTDOOR

UNIT

CONTROL OUTDOOR

TERM. STRIP UNIT

_---_

@---@

®---_

Page 24

Thermostat

2 Heat /2 Cool

with t'stat with

humidity control

12 Heat /1 Cool

TABLE 10

Field Wiring Applications (Continued)

Jumper Settings (See figure 25)

W915 W914 Dehu-

DIP Switch 1 Two-Stage midification W951

Cooling or Harmony Heat Pumps

III

OFF Cut Intact Intact

OFF Cut Cut Intact

OFF Intact Intact Intact

T'STAT

®.

Wiring Connections

CONTROL

TERM. STRIP

OUTDOOR

UNIT

CONTROL OUTDOOR

TERM. STRIP UNIT

®®

@----@

®----@

$1 CONTROL OUTDOOR

T'STAT TERM. STRIP UNIT

® ®

0- 4_- @

Page 25

G60UHV(X) Schematic Wiring Diagram

FIGURE 23

Page 26

TYPICAL G60UHV(X) FIELD WIRING DIAGRAM

USE COPPER CONDUCTORS ONLY.

D _ FIELD INSTALLED CLASS II 24V

FIELD INSTALLED LINE VOLTAGE

t20V ACC G

N...,,e-i.

LI ...,m.ili--

= E

THERMOSTAT $51

I@@@_)©@@1 =_

f,i J

= i = I c.....

]_ ...............

L_t.U.._HH_-H2L _.H_-i

i. .........................

r...............

t_---- J

_-e 24V IN_U'T......

_CQHBUSTIQN AIR

J84 INDUCE'R HOTOR

PR]HARY P84 VALVE

oQ%o

GAS BURNERS HIGH HEAT

0 0 SVITCH

FLAME SENSOR 3t59

RDLLOUT __P159 RQLLDUT $_/ITCH

$VITCH

SVITCH

PtSS _Tt $21

_i TRANSFOR_R SEC_Y

LIMIT

INTEGRATED

CONTROL !2

.......... L._. C_8

.........,, , , _ ?_1111

.d.-r-J-_..÷_-

IIHDTI_

FIGURE 24

TWO-STAGE, VARIABLE SPEED INTEGRATED CONTROL BOARD

I OOOq

STATUS=

E-COW-

DIAGNOSTIC

LEDs

HEATING

DIP

SWITCHES

INDOOR

BLOWERDIP

SWITCHES

ON-BOARD

JUMPERS

1/4" QUICK CONNECT TERMINALS

HUM : 120 VAC OUTPUT TO HUMIDIFIER

XMFR :12O VAC OUTPUT TO TRANSFORMER

LI :120 VAC INPUT TO CONTROL

CIRC : 120 VAC OUTPUT TO CIRCULATING BLOWER

EAC : 120 VAC OUTPUT TO ELECTRONIC AIR CLEANER

NEUTRALS= 120 VAC NEUTRAL

THERMOSTAT CONNECTIONS (TB1)

DS: DEHUMIDIFICATIONSIGNAL

W2: HEATDEMANDFROM2NDSTAGET'STAT

Wl: HEAT DEMAND FROM IST STAGE T'STAT

R: CLASS 2 VOLTAGE TO THERMOSTAT

G: MANUAL FAN FROM T'STAT

C: THERMOSTATSIGNAL GROUND CONNECTED TO TRANSFORMER

GROUND (TR) & CHASIS GROUND (GRD)

YI: THERMOSTAT Is_"STAGE COOL SIGNAL

Y2: THERMOSTAT2nd STAGE COOL SIGNAL

0--THERMOSTATSIGNAL TO HEAT PUMP REVERSINGVALVE

H= 24V HUMIDIFIER OUTPUT

L= LENNOX SYSTEM OPERATION MONITOR

1= FUTURE USE

DIP SWITCH FUNCTIONS

HTG DIP SWITCH(ES)

3 and 4

INDOOR BLOWER

DIP SWITCH(ES)

FUNCTION

T'stat Heat Staqes (sin qle or two-staqe)

Second Staqe ON Delay (sin qle-staqe t'stat)

Heatinq Fan OFF Delay

FUNCTION

5 and 6

7 and 8

9 and 10

11 and 12

Coolinq Mode Blower Speed

Blower Speed Adiustment

Cooling Mode Blower Ramping Profile

Heating Mode Blower Speed

FIGURE 25

Page 27

G60UHVunitsareequippedwitha two-stage,variable

speedintegratedcontrol.Thiscontrolmanagesignition

timing,heatingmodefan offdelaysandindoorblower

speedsbasedonselectionsmadeusingthecontroldip

switchesandjumpers.Thecontrolincludesan internal

watchguardfeaturewhichautomaticallyresetstheignition

controlwhenithasbeenlockedout.Afteronehourofcon-

tinuousthermostatdemandfor heat,thewatchguardwill

breakandremakethermostatdemandto thefurnaceand

automaticallyresetthecontrolto relightthefurnace.

HeatingOperationDIPSwitchSettings

Switch1 -- ThermostatSelection-- Thisunitmaybe

usedwitheithera single-stageor two-stagethermostat.

ThethermostatselectionismadeusingaDIPswitchwhich

mustbeproperlypositionedfortheparticularapplication.

TheDIPswitchis factory-positionedfor usewitha two-

stagethermostat.Ifasingle-stagethermostatistobeused,

theDIPswitchmustberepositioned,

a- Select "OFF" for two-stage heating operation con-

trolled by a two-stage heating thermostat (factory set-

ting);

b- Select "ON" for two-stage heating operation con-

trolled by a single-stage heating thermostat, This set-

ting provides a timed delay before second-stage heat

is initiated,

Switch 2 -- Second Stage Delay (Used with Single-

Stage Thermostat Only) -- This switch is used to deter-

mine the second stage on delay when a single-stage ther-

mostat is being used. The switch is factory-set in the OFF

position, which provides a 10-minute delay before second-

stage heat is initiated, If the switch is toggled to the ON

position, it will provide a 15-minute delay before second-

stage heat is initiated, This switch is only activated when

the thermostat selector jumper is positioned for SINGLE-

stage thermostat use,

Switches 3 and 4 -- Blower-Off Delay -- The blower-on

delay of 45 seconds is not adjustable. The blower-off delay

(time that the blower operates after the heating demand

has been satisfied) can be adjusted by moving switches 3

and 4 on the integrated control board, The unit is shipped

from the factory with a blower-off delay of 90 seconds, The

blower off delay affects comfort and is adjustable to satisfy

individual applications. Adjust the blower off delay to

achieve a supply air temperature between 90° and 110°F at

the exact moment that the blower is de-energized. Longer

off delay settings provide lower supply air temperatures;

shorter settings provide higher supply air temperatu-

res,Table 11 provides the blower off timings that will result

from different switch settings,

TABLE 11

Blower Off Delay Switch Settings

Blower Off Delay Switch 3 Switch 4

(Seconds)

60 Off On

90 Off Off

120 On Off

180 On On

Indoor Blower Operation DIP Switch Settings

Switches 5 and 6-- Cooling Mode Blower Speed --

Switches 5 and 6 are used to select cooling blower motor

speed. The unit is shipped from the factory with the dip

switches positioned for high speed (4) indoor blower motor

operation during the cooling mode. The table below pro-

vides the cooling mode blower speeds that will result from

different switch settings. Refer to tables 16 through 25 for

corresponding cfm values,

TABLE 12

Cooling Mode Blower Speeds

Speed Switch 5 Switch 6

1 - Low On On

2 - Medium Low Off On

3 - Medium High On Off

4 - High (Factory) Off Off

Switches 7 and 8-- Blower Speed Adjustment --

Switches 7 and 8 are used to select blower speed adjust-

ment settings. The unit is shipped from the factory with the

dip switches positioned for NORMAL (no) adjustment, The

dip switches may be positioned to adjust the blower speed

by +10% or -10% to better suit the application, The table

below provides blower speed adjustments that will result

from different switch settings. Refer to tables 16 through 25

for corresponding cfm values,

TABLE 13

Blower Speed Adjustment

Adjustment Switch 7 Switch 8

+10% (approx,) On Off

NORMAL (Factory) Off Off

-10% (approx,) Off On

Switches 9 and 10 -- Cooling Mode Blower Speed

Ramping -- Switches 9 and 10 are used to select cooling

mode blower speed ramping options, Blower speed ramp-

ing may be used to enhance dehumidification perfor-

mance. The switches are factory set at option A which has

the greatest effect on blower motor performance. Table 14

provides the cooling mode blower speed ramping options

that will result from different switch settings, The cooling

mode blower speed ramping options are detailed on the

next page,

NOTE -The off portion of the selected ramp profile also ap-

plies during heat pump operation in dual fuel applications,

Page 28

TABLE 14

Cooling Mode Blower Speed Ramping

Ramping Option Switch 9Switch 10

A (Factory) Off Off

B On Off

C Off On

D On On

Ramping Option A (Factory Selection)

• Motor runs at 50% for 30 seconds.

• Motor then runs at 82% for approximately 7-1/2 minu-

tes.

• If demand has not been satisfied after 7-1/2 minutes,

motor runs at 100% until demand is satisfied.

• Once demand is met, motor runs at 50% for 30 sec-

onds then ramps down to stop.

71/2MIN _ 100% __

82% CFM CFM OFF

COOL,NGDEMAND

Ramping Option B

• Motor runs at 82% for approximately 7-1/2 minutes. If

demand has not been satisfied after 7-1/2 minutes,

motor runs at 100% until demand is satisfied.

• Once demand is met, motor ramps down to stop.

(

-- 7 1/2 MIN _ 100% CFM

OFF 82%CFM /OFF

COOLING DEMAND --'1_"

Ramping Option C

• Motor runs at 100% until demand is satisfied.

• Once demand is met, motor runs at 100% for 45 sec-

onds then ramps down to stop.

._p-- 100% CFM --

OFF OFF

-- DEMAND

Ramping Option D

• Motor runs at 100% until demand is satisfied.

• Once demand is met, motor ramps down to stop.

100% CFM _OFF

COOLING

DEMAND

Switches 11 and 12 -- Heating Mode Blower Speed --

Switches 11and 12 are used to select heating mode blower

motor speed, The unit is shipped from the factory with the

dip switches positioned for medium low (2) speed indoor

blower motor operation during the heating mode. The table

below provides the heating mode blower speeds that will

result from different switch settings, Refer to tables 16

through 25 for corresponding cfm values,

TABLE 15

Heating Mode Blower Speeds

Speed Switch 11 Switch 12

1 - Low On On

2 - Medium Low Off On

(Factory)

3 - Medium High On Off

4 - High Off Off

On-Board Jumper W914

On-board jumper W914, which connects terminals DS and

R on the integrated control board, must be cut when the fur-

nace is installed with either the Harmony III zone control

board or a thermostat which features humidity control, If

the jumper is left intact the PMW signal from the HARMO-

NY Ill control will be blocked and also lead to control dam-

age. Refer to table 27 for operation sequence in applica-

tions including G60UHV, a thermostat which features

humidity control and a single-speed outdoor unit. Table 28

gives the operation sequence in applications with a two-

speed outdoor unit,

On-Board Jumper W951

On-board jumper W951, which connects terminals R and O

on the integrated control board, must be cut when the fur-

nace is installed in applications which include a heat pump

unit and a thermostat which features dual fuel use. If the

jumper is left intact, terminal "O" will remain energized elim-

inating the HEAT MODE in the heat pump.

On-Board Jumper W915

On-board jumper W915, which connects terminals Y1 and

Y2 on the integrated control board, must be cut if two-stage

cooling will be used. If the jumper is not cut the outdoor unit

will operate in second-stage cooling only.

Status LEDs (SPEED, CFM, STATUS, E-COM)

The green SPEED LED indicates circulating blower speed

in response to the DS signal. The LED is lit during normal

blower operation and is off during a dehumidification de-

mand. In Harmony III applications, the brightness of the

LED indicates the requested blower speed.

The green CFM LED indicates the blower air flow. Count

the number of blinks between the two-second pauses to

determine the CFM. Each blink represents approximately

100 CFM.

The STATUS LED flashes diagnostic codes, which are de-

tailed on page 43.

The green E-COM LED indicates that the control is receiv-

ing and processing of commands and inputs. The LED may

flash rapidly or may display a single flash, depending upon

the activity.

Page 29

TABLE 16

G60UHV-36A-070 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

12341234

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+895 420 1015 480 1275 600 1320 625 1000 470 1165 550 1260 595 1380 650

NORM 815 385 925 435 1120 530 1170 555 915 430 1035 490 1115 525 1230 580

-- 740 350 845 400 1000 475 1040 490 830 390 945 445 990 470 1085 510

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+820 390 930 440 1140 540 1195 565 730 3455 810 385 865 410 910 430

NORM 755 355 855 405 1020 480 1060 500 670 315 745 350 785 370 850 400

i 695 325 775 365 920 435 965 455 630 295 690 325 725 340 770 365

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 L/s).

Lennox Harmony Ill" Zone Control Applications - Minimum blower speed is 426 cfm (200 L!s).

TABLE 17

G60UHV-36B-090 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM

"ADJUST"

Switch

Positions

Speed Switch Positions

;econd Stage "HEAT" Speed Second Stage "COOL" Speed

12341234

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ N/A N/A 1025 485 1265 600 1320 625 1005 475 1165 550 1260 595 1385 655

NORM N/A N/A N/A N/A 1125 530 1170 555 905 425 1035 490 1110 525 1225 580

i N/A N/A N/A N/A 1010 475 1045 495 825 390 940 445 1000 470 1090 515

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ N/A N/A 940 445 1140 540 1185 560 725 340 810 385 860 405 920 435

NORM N/A N/A N/A N/A 1030 485 1065 505 670 315 740 350 785 370 840 395

-- N/A N/A N/A N/A 925 435 950 450 625 295 695 330 725 345 770 365

N/A - First and second stage HEAT positions shown cannot be used on this model.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Onty speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 L/s).

Lennox Harmony Ill" Zone Controt Applications - Minimum blower speed is 453 cfm (215 L/s).

Page 30

TABLE 18

G60UHV-60C-090 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air Options: Bottom; both sides; or bottom and one side.

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

1 2 3 4 1 2 3 4

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1570 740 1770 835 1965 925 2185 1030 1680 795 1795 845 2015 950 2255 1065

NORM 1425 675 1625 765 1810 855 1990 940 1520 715 1635 770 1855 875 2065 975

-- 1270 600 1435 680 1635 770 1790 845 1355 640 1460 690 1670 785 1845 870

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1430 675 1625 770 1815 855 1990 940 1170 550 1250 590 1425 670 1600 755

NORM 1290 610 1470 695 1660 780 1830 865 1060 500 1140 540 1280 605 1445 680

-- 1165 550 1300 615 1470 695 1635 770 930 440 1015 480 1155 545 1285 605

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 L/s).

Lennox Harmony Ill ' Zone Control Applications - Minimum blower speed is 478 cfm (225 Us).

TABLE 19

G60UHV-60C-090 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air Options: Single side return air - Bold volumes require field-fabricated transition to accommodate

20 x 25 x 1 in. (508 x 635 x 25 mm) cleanable air filter in order to maintain proper air velocity across the filter.

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

1 2 3 4 1 2 3 4

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1520 715 1705 805 1910 900 2120 1000 1605 760 1745 825 1955 925 2195 1035

NORM 1380 650 1540 730 1750 825 1925 910 1475 695 1565 740 1785 840 1985 935

i 1230 580 1395 660 1570 740 1745 825 1305 615 1410 665 1590 750 1795 845

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1385 655 1560 735 1765 835 1945 920 1125 530 1210 570 1370 650 1525 720

NORM 1255 590 1425 670 1580 745 1785 840 1020 480 1100 520 1235 580 1385 655

i 1135 535 1265 600 1430 675 1570 740 890 420 980 465 1115 525 1235 580

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 L/s).

Lennox Harmony Iit" Zone Control Applications - Minimum blower speed is 478 cfm (225 L/s).

Page 31

TABLE 20

G60UHV-60C-090 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air Options: Side return air with optional RAB return air base.

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

12341234

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1505 710 1690 800 1900 895 2090 985 1625 765 1715 810 1940 915 2175 1030

NORM 1370 645 1535 725 1745 825 1915 905 1450 685 1560 735 1765 835 1945 915

-- 1215 575 1375 650 1535 725 1705 805 1310 620 1405 660 1595 755 1795 850

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1370 650 1540 725 1745 825 1925 910 1130 530 1205 570 1360 645 1530 720

NORM 1240 585 1405 665 1565 740 1765 830 1025 485 1100 520 1240 585 1385 655

-- 1135 535 1265 600 1420 670 1560 735 900 425 985 465 1115 525 1240 585

N/A - First and second stage HEAT positions shown cannot be used on this model.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 Us).

Lennox Harmony Ill ' Zone Control Applications - Minimum blower speed is 478 cfm (225 Us).

TABLE 21

G60UHV-60C-110 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air Options: Bottom; both sides; or bottom and one side.

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

12341234

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1510 715 1700 805 1895 895 2105 995 1610 760 1730 815 1955 920 2185 1030

NORM 1365 645 1545 730 1725 815 1915 905 1460 690 1575 745 1780 840 1995 940

-- N/A N/A 1375 650 1545 730 1715 810 1295 610 1395 660 1600 755 1780 840

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1370 650 1560 735 1750 825 1925 910 1125 530 1190 565 1350 640 1530 720

NORM 1245 585 1410 665 1590 750 1760 830 1015 480 1090 515 1230 580 1360 640

-- N/A N/A 1255 595 1420 670 1575 745 900 425 975 460 1110 525 1235 580

N/A - First and second stage HEAT positions shown cannot be used on this model.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 Us).

Lennox Harmony Ill" Zone Controt Applications - Minimum blower speed is 483 cfm (230 L/s).

Page 32

TABLE 22

G60UHV-60C-110 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air O _tions: Single side return air - Bold volumes require field-fabricated transition to accommodate

20 x 25 x 1 in. 508 x 635 x 25 mm) cleanable air filter in order to maintain proper air velocity across the filter.

Speed Switch Positions

"ADJUST" Second Stage "HEAT" Speed Second Stage "COOL" Speed

Switch

Positions 1 2 3 4 1 2 3

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1540 725 1750 825 1945 915 2170 1025 1635 770 1760 830 1995 940

NORM 1385 655 1635 770 1785 845 1960 925 1485 700 1610 760 1820 860

i 1230 580 1390 655 1585 750 1760 830 1310 620 1415 665 1620 765

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1390 655 1595 750 1785 845 1955 925 1140 540 1215 575 1370 645 1555 735

NORM 1255 590 1425 675 1615 765 1800 850 1030 485 1105 520 1245 585 1400 660

i 1135 535 1265 600 1435 675 1610 760 925 435 990 470 1125 530 1255 595

NOTES - The effect of static pressure included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 L/s).

Lennox Harmony Ill" Zone Control Applications - Minimum blower speed is 483 cfm (230 L/s).

TABLE 23

G60UHV-60C-110 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air Options: Side return air with optional RAB return air base.

cfm L/s

2225 1050

2035 960

1815 855

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

1 2 3 4 1 2 3 4

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1490 705 1680 790 1875 885 2085 985 1620 765 1735 820 1950 920 2185 1030

NORM 1340 635 1525 720 1715 810 1885 890 1470 695 1595 750 1780 840 1975 935

i N/A N/A 1350 635 1525 720 1700 805 1305 615 1400 660 1605 760 1785 845

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1375 650 1570 740 1765 830 1935 915 1017 480 1075 510 1375 650 1540 725

NORM 1255 590 1425 870 1570 740 1750 825 1025 485 1100 520 1235 585 1385 855

-- N/A N/A 1255 590 1415 665 1880 885 920 435 990 470 1000 470 1110 525

N/A - First and second stage HEAT positions shown cannot be used on this model.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 L/s).

Lennox Harmony Ill ' Zone Control Applications - Minimum blower speed is 483 cfm (230 L!s).

Page 33

TABLE 24

G60UHV-60D-135 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air Options: Bottom; both sides; or bottom and one side.

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

12341234

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1470 695 1665 785 1855 875 2050 970 1575 745 1695 800 1900 900 2140 1010

NORM 1335 630 1520 715 1695 800 1870 885 1430 675 1540 725 1745 825 1945 920

i N/A N/A 1340 630 1510 710 1675 790 1275 600 1370 645 1565 740 1735 820

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1345 635 1520 715 1710 805 1880 890 1100 520 1180 560 1330 625 1495 705

NORM 1220 575 1375 650 1545 730 1725 815 1000 475 1075 510 1205 570 1350 635

-- N/A N/A 1230 580 1380 650 1535 725 900 425 670 455 1095 515 1210 570

N/A - First and second stage HEAT positions shown cannot be used on this model.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 Us).

Lennox Harmony Ill ' Zone Control Applications - Minimum blower speed is 495 cfm (235 Us).

TABLE 25

G60UHV-60D-135 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air Options: Single side return air - Bold volumes require field-fabricated transition to accommodate

20 x 25 x 1 in. 508 x 635 x 25 mm) cleanable air filter in order to maintain proper air velocity across the filter.

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

1 2 3 4

cfm L/s cfm L/s cfm L/s cfm L/s

1500 705 1620 765 1815 860 2040 965

1360 645 1470 695 1660 785 1860 875

1225 580 1310 620 1490 705 1670 785

1234

cfm L/s cfm L/s cfm L/s cfm L/s

+ 1405 665 1600 755 1775 840 1965 925

NORM N/A N/A 1440 680 1635 770 1800 850

i N/A N/A N/A N/A 1445 685 1620 765

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1285 605 1450 685 1635 770 1800 850 1075 505 1150 545 1275 605 1425 675

NORM N/A N/A 1325 625 1485 700 1660 785 955 450 1040 490 1165 550 1300 615

i N/A N/A N/A N/A 1325 625 1460 690 870 410 930 440 1065 500 1175 555

N/A - First and second stage HEAT positions shown cannot be used on this model.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 Us).

Lennox Harmony Ill" Zone Control Applications - Minimum blower speed is 495 cfm (235 Us).

Page 34

TABLE 26

G60UHV-60D-135 BLOWER MOTOR PERFORMANCE

0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range

Factory Settings: Heating Speed - 2; Cooling Speed - 4; Speed Adjust - NORM.

Return Air Options: Side return air with optional RAB return air base.

"ADJUST"

Switch

Positions

Speed Switch Positions

Second Stage "HEAT" Speed Second Stage "COOL" Speed

1 2 3 4 1 2 3 4

cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1425 675 1615 760 1795 845 1975 930 1505 710 1620 765 1815 855 2035 960

NORM N/A N/A 1455 690 1640 775 1805 850 1370 650 1470 695 1670 790 1850 875

-- N/A N/A N/A N/A 1455 685 1630 770 1225 580 1320 625 1500 705 1670 790

"ADJUST" First Stage "HEAT" Speed First Stage "COOL" Speed

Switch 1 2 3 4 1 2 3 4

Positions cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s cfm L/s

+ 1305 615 1470 695 1655 780 1825 860 1075 510 1155 545 1295 610 1445 680

NORM N/A N/A 1345 635 1505 710 1670 790 980 465 1050 495 1175 555 1305 615

-- N/A N/A N/A N/A 1340 635 1475 695 875 415 935 440 1070 505 1180 555

N/A - First and second stage HEAT positions shown cannot be used on this model.

NOTES - The effect of static pressure is included in air volumes shown.

First stage HEAT is approximately 91% of the same second stage HEAT speed position.

First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.

Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position - minimum 500 cfm (235 L/s).

Lennox Harmony Ill 'Zone Control Applications - Minimum blower speed is 495 cfm (235 L/s).

TABLE 27

OPERATING SEQUENCE

G60UHV, Thermostat with Humidity Control Feature and Single-Speed Outdoor Unit

OPERATING t 't .......

•S¥S EM DEMAND S¥S EM RESPONSE

SEQUENCE .

Thermostat Demand Relative Humidity

System Step I III

Condition Y1 O G W

1 Status D

NO CALL FOR DEHUMIDIFICATION

Normal Operation 1 On On On

BASIC MODE (only active on a Y1 thermostat demand)

Normal Operation 1 On On On

Dehumidification 2 On On On On

Call

Compres-

sor

Acceptable VAC High

Demand VAC High

Blower

CFM

(COOL)

lOO%

70%

Comments

Compressor and indoor

blower follow thermostat

demand

SignatureStat T" thermo-

stat energizes Y1 and de-

energizes D on a call for

de-humidification

PRECISION MODE (operates ind_ oendent of a Y1 thermostat demand)

Normal Operation

Dehumidification

call

Dehumidification

call ONLY

1 On On On Acceptable VAC High

2 On On On Demand VAC High

1 On On On Demand VAC High

Jumpers at indoor unit with a single stage outdoor unit

With Condensing unit - Cut W914 (R to DS) on SureLight board

With Heat Pump - Cut W914 (R to DS) & W951 (R to O) on SureLight board

100%

70%

Dehumidification mode

begins when humidity is

greater than set point

SignatureStat T`'thermo-

stat will try to maintain

room humidity setpoint by

allowing the room space

to maintain a temperature

that is cooler than the

room thermostat setpoint*

Thermostat used: 51M26 -- 1 heat/1 cool or 51M28 -- 2 heat/2 cool for heat pumps

*In Precision mode, SignatureStat "thermostat will allow room temperature up to 2 °F (1.2°C) cooler than room temperature

setting in order to meet humidity control demand.

Page 35

TABLE 28

OPERATING SEQUENCE

G60UHV, Thermostat with Humidity Control Feature and Two-Speed Outdoor Unit

OPERATING _-I T .......

SEQUENCE I SYS EM DEMAND S¥S EM RESPONSE

Thermostat Demand Relative Humidity

System Ste

Condition P ww I

1 Status D

NO CALL FOR DEHUMIDIFICATION

Compressor

Blower

CFM

(COOL)

Comments

Normal Operation - 24

Y1 1 On On On Acceptable VAC

Normal Operation - 24

Y2 2 On On On On Acceptable VAC

Low

High

70%

100%

Compressor and indoor

blower follow thermostat

demand

ROOM THERMOSTAT CALLS FOR FIRST STAGE COl)LING

BASIC MODE (only active on a Y1 thermostat demand)

Normal Operation 1 On On On

Dehumidification

Call 2 On On On On

Acceptable VAC

Demand VAC

Low

High

70%

SignatureStat T" thermo-

stat energizes Y2 and de-

energizes D on a call for

de-humidification

PRECISION MODE (operates independent of a Y1 thermostat demand)

Normal Operation 1 On On On Acceptable VAC

Dehumidification 0

2 On On On On Demand

call VAC

Dehumidification 0

call ONLY 1 On On On On Demand VAC

ROOM THERMOSTAT CALLS FOR FIRST AND SECOND STAGE COOLING

BASIC MODE (only active on a Y1 thermostat demand)

Normal Operation 1 On On On On Acceptable VAC

Dehumidification 0

2 On On On On Demand

Call VAC

Low

High

70%

10o%

7o%

Dehumidification mode

begins when humidity is

greater than set point

SignatureStat T_ thermo-

stat will try to maintain

room humidity setpoint by

allowing the room space

to maintain a temperature

that is cooler than the

room thermostat setpoint*

SignatureStat T" thermo-

stat energizes Y2 and de-

energizes D on a call for

de-humidification

PRECISION MODE (operates independent of a Y1 thermostat demand)

Normal Operation 1 On On On Acceptable

Dehumidification 2 On On On On Demand

call

Dehumidification

call ONLY 1 On On On On Demand

VAC Low

VAC High

70%

Jumpers at indoor unit with a two stage outdoor unit

Cut factory jumper from Y1 to Y2 or cut W915 (Y1 to Y2)

With Condensing unit - Cut W914 (R to DS) on SureLight board

With Heat Pump - Cut W914 (R to DS) & W951 (R to O) on SureLight board

Dehumidification mode

begins when humidity is

greater than set point

SignatureStat T_ thermo-

stat will try to maintain

room humidity setpoint by

allowing the room space

to maintain a temperature

that is cooler than the

room thermostat setpoint*

Thermostat used: 51M27 -- 2 heat/2 cool or 51M28 -- 2 heat/2 cool for heat pumps

*In Precision mode, SignatureStat "thermostat will allow room temperature up to 2 °F (1.2°C) coolerthan room temperature

setting in order to meet humidity control demand.

Page 36

FOR YOUR SAFETY READ BEFORE LIGHTING

AWARNING

ACAUTION

BEFORE LIGHTING smell all around the appliance area for

gas, Be sure to smell next to the floor because some gas is

heavier than air and will settle on the floor.

The gas valve on the G60UHV(X) unit may be equipped

with either a gas control knob or gas control lever. Use only

your hand to push the lever or to turn the gas control knob.

Never use tools, If the knob will not tum or if the lever will not

move by hand, do not try to repair it. Call a qualified service

technician. Force or attempted repair may result in a fire or

explosion.

Placing the furnace into operation:

G60UHV(X) units are equipped with an automatic ignition

system. Do not attempt to manually light burners on these

furnaces, Each time the thermostat calls for heat, the

burners will automatically light, The ignitor does not get

hot when there is no call for heat on units with an automatic

ignition system,

AWARNING

Gas Valve Operation (Figures 26 and 27)

1 - STOP! Read the safety information at the beginning of

this section.

2 - Set the thermostat to the lowest setting,

3 - Turn off all electrical power to the unit,

4 - This furnace is equipped with an ignition device which

automatically lights the burners. Do not try to light the

burners by hand.

5 - Remove the upper access panel.

6 - White Rodgers 36E Gas Valve - Switch gas valve le-

ver to OFF. See figure 26.

Honeywell VR8205 Gas Valve - Turn knob on gas

valve clockwise _ to OFF. Do not force. See figure

27.

7 - Wait five minutes to clear out any gas. If you then smell

gas, STOP! Immediately call your gas supplier from a

neighbor's phone. Follow the gas supplier's instruc-

tions. If you do not smell gas go to next step.

WHITE RODGERS 36E SERIES GAS VALVE

HIGH FIRE

MANIFOLD

PRESSURE

ADJUSTMENT

ON SIDE

(under cap)

MANIFOLD

TAP ON SIDE

INLET PRESSURE LOW FIRE MANIFOLD

TAP ON SIDE PRESSURE ADJUSTMENT

ON SIDE (under cap)

GAS VALVE SHOWN IN OFF POSITION

FIGURE 26

HONEYWELL VR8205 SERIES GAS VALVE

HIGH FIRE

ADJUSTING SCREW

(under cap)

MANIFOLD

PRESSURE

TAP

LOW FIRE

(under cap)

INLET PRESSI _E TAP

GAS VALVE SHOWN IN OFF POSITION

FIGURE 27

8 - White Rodgers 36E Gas Valve - Switch gas valve lever

to ON. See figure 26,

Honeywell VR8205 Gas Valve - Turn knob on gas

valve counterclockwise 41_ to ON. Do not force, See

figure 27,

9 - Replace the upper access panel,

10- Turn on all electrical power to to the unit,

11- Set the thermostat to desired setting,

NOTE -When unit is initially started, steps 1 through 11

may need to be repeated to purge air from gas line,

Page 37

12- Iftheappliancewillnotoperate,followtheinstructions

"TurningOffGastoUnit"andcallyourservicetechni-

cianor gas supplier.

Turning Off Gas to Unit

1 - Set the thermostat to the lowest setting,

2 - Turn off all electrical power to the unit if service is to be

performed,

3 - Remove the upper access panel.

4 - White Rodgers 36E Gas Valve- Switch gas valve le-

verto OFF.

Honeywell VR8205 Gas Valve - Turn knob on gas

valve clockwise _ll to OFF, Do not force,

5 - Replace the upper access panel,

Gas Flow

To check for proper gas flow to the combustion chamber,

determine the Btu (kW) input from the unit nameplate, Di-

vide this input rating by the Btu (kW) per cubic foot (cubic

meter) of available gas, The result is the required number

of cubic feet (cubic meter) per hour. Determine the flow of

gas through the gas meter for two minutes and multiply by

30 to get the hourly flow of gas,

Gas Pressure

1 - Check the gas line pressure with the unit firing at maxi-

mum rate, A minimum of 4,5 in, w,c, for natural gas or

11,0 in, w,c, for LP/propane gas should be maintained,

2- After the line pressure has been checked and ad-

justed, check the low fire and high fire manifold pres-

sures, See figures 26 and 27 for the location of the

manifold pressure adjustment screws. Low and high

fire manifold pressures are given in table 29, A natural

gas to LP/propane gas changeover kit is required to

convert the unit,

Refer to table 29 for high altitude requirements and man-

ifold pressure settings at all altitudes.

NOTE -In Canada, certification for installations at eleva-

tions over 4500 feet (1372 m) is the jurisdiction of local au-

thorities.

NOTE -A natural to L.P.propane gas changeover kit is nec-

essary to convert this unit. Refer to the changeover kit

installation instruction for the conversion procedure.

Primary and Secondary Limits

The primary limit is located on the heating compartment

vestibule panel. The secondary limits (if equipped) are lo-

cated in the blower compartment, attached to the back side

of the blower, These limits are factory set and require no

adjustment.

Flame Rollout Switches (Two)

These manually reset switches are located on (or inside of)

the burner box, If tripped, check for adequate combustion

air before resetting.

Pressure Switches

The pressure switch assembly (includes two switches) is

located in the heating compartment adjacent to the com-

bustion air inducer. These switches check for proper com-

bustion air inducer operation before allowing ignition trial,

The switches are factory-set and require no adjustment,

Temperature Rise

Place the unit into operation with a second-stage heating

demand. After supply and return air temperatures have

stabilized, check the temperature rise. If necessary, adjust

the heating blower speed to maintain the temperature rise

within the range shown on the unit nameplate, Increase the

blower speed to decrease the temperature rise, Decrease

the blower speed to increase the temperature rise. Failure

to properly adjust the temperature rise may cause erratic

limit operation,

Thermostat Heat Anticipation

Set the heat anticipator setting (if adjustable) according to

the amp draw listed on the wiring diagram that is attached

to the unit,

TABLE 29

High Altitude Requirements /Manifold Pressure Settings

Model

Input

Size Gas

0 - 4500 ft.

(0 - 1372 m)

Required

Conversion Pressure

Kit Switch

Altitude

4,501 -7500 ft.

(1373 -2286 m)

Required

Conversion Pressure

Kit Switch

7501-10,000 ft.

(2286 - 3048 m)

Required

Conversion Pressure

Kit Switch

Manifold Pressure

at all altitudes

in. w.g. kPa in. w.g.

Nat. N/A No Change N/A No Change 59M16 18M64 1.7 0.42 3.5

-070 LPG 59M13" No Change 59M13" No Change 59M14" 18M64 4.9 1.22 10.0

Nat, N/A No Change N/A 18M61 59M16 18M64 1.7 0.42 3.5

-090 LPG 59M13" No Change 59M13" 18M61 59M14" 18M64 4.9 1.22 10.0

-110 Nat. N/A No Change N/A 18M63 59M16 18M61 1.7 0.42 3.5

-135 LPG 59M13" No Change 59M13" 18M63 59M14" 18M61 4.9 1.22 10.0

Low Fire High Fire

kPa

0.87

2.5

0.87

2.5

0.87

2.5

Pressure switch is factory set. No adjustment necessary. All models use the factory installed pressure switch from 0-4500 feet (0-1370 m).

*LPG/Propane conversion kit includes LP regulator.

Page 38

Electrical

1- Checkallwiringforlooseconnections.

2 - Checkforthecorrectvoltageat thefurnace(furnace

operating).

3 - Checkamp-drawontheblowermotor.

MotorNameplate Actual

NOTE -Do not secure the electrical conduit directly to the

air ducts or structure.

Electronic Ignition

The two-stage, variable speed integrated control used in

G60UHV units has an added feature of an internal Watch-

guard control, The feature serves as an automatic reset de-

vice for ignition control lockout caused by ignition failure.

This type of lockout is usually due to low gas line pressure,

After one hour of continuous thermostat demand for heat,

the Watchguard will break and remake thermostat demand

to the furnace and automatically reset the control to begin

the ignition sequence,

Flue And Chimney

1 - Check flue pipe, chimney and all connections for tight-

ness and to make sure there is no blockage,

2 - Check unit for proper draft.

3 - Is pressure switch closed? Obstructed flue will cause

unit to shut off at pressure switch. Check flue and outlet

for blockages.

4 - Reset manual flame rollout switches on burner box,

Failure To Operate

If the unit fails to operate, check the following:

1 - Is the thermostat calling for heat?

2 - Are access panels securely in place?

3 - Is the main disconnect switch closed?

4 - Is there a blown fuse or tripped circuit breaker?

5 - Is the filter dirty or plugged? Dirty or plugged filters will

cause the limit control to shut the unit off.

6 - Is gas turned on at the meter?

7 - Is the manual main shut-off valve open?

8 - Is the internal manual shut-off valve open?

9 - Is the unit ignition system in lock out? Ifthe unit locks out

again, call the service technician to inspect the unit for

blockages.

NOTE -The control board thermostat selection DIP switch is

factory-set in the "TWO-STAGE" position.

Applications Using a Two-Stage Thermostat

A - Heating Sequence -- Control Board Thermostat

Selection DIP Switch in "Two-Stage" Position (Factory

Setting)

1 - On a call for heat, thermostat first-stage contacts close

sending a signal to the integrated control. The inte-

grated control runs a self-diagnostic program and

checks high temperature limit switches for normally

closed contacts and pressure switches for normally

open contacts.The combustion air inducer is ener-

gized at low speed and the 120 VAC humidifier termi-

nal is energized.

2 - Once the control receives a signal that the low pres-

sure switch has closed, the combustion air inducer be-

gins a 15-second pre-purge in low speed.

3 - After the pre-purge is complete, a 20-second initial ig-

nitor warm-up period begins. The combustion air in-

ducer continues to operate at low speed.

4 - After the 20-second warm-up period has ended, the gas

valve is energized on low fire (first stage) and ignition oc-

curs, At the same time, the control module sends a sig-

nal to begin an indoor blower 45-second ON-delay.

When the delay ends, the indoor blower motor is ener-

gized on the low fire heating speed and the 24V hu-

midifier terminal is energized. The furnace will contin-

ue this operation as long as the thermostat has a

first-stage heating demand,

5 - If second-stage heat is required, the thermostat sec-

ond-stage heat contacts close and send a signal to the

integrated control. The integrated control initiates a

30-second second-stage recognition delay.

6 - At the end of the recognition delay, the integrated con-

trol energizes the combustion air inducer at high

speed. The control also checks the high fire (second

stage) pressure switch to make sure it is closed.The

high fire (second stage) gas valve is energized and the

indoor blower motor is energized for operation at the

high fire heating speed.

7 - When the demand for high fire (second stage) heat is

satisfied, thecombustion air inducer is switched to the

low-fire heating speed and the high-fire (second

stage) gas valve is de-energized. The low-fire (first

stage) gas valve continues operation. The indoor

blower motor is switched to the low-fire heating speed.

8 - When the thermostat demand for low-fire (first stage)

heat is satisfied, the gas valve is de-energized and the

field-selected indoor blower off delay begins. The

combustion air inducer begins a 5-second post-purge

period.

9 - When the combustion air post-purge period is com-

plete, the inducer and humidifier terminals are de-en-

ergized. The indoor blower is de-energized at the end

of the off delay,

Applications Using A Single-Stage Thermostat

B - Heating Sequence -- Control Board Thermostat

Selection DIP Switch in "Single-Stage" Position

NOTE -In these applications, two-stage heat will be initi-

ated by the integrated control if heating demand has not

been satisfied after the field adjustable period (10 or 15

minutes).

1 - On a call for heat, thermostat first-stage contacts close

sending a signal to the integrated control. The inte-

grated control runs a self-diagnostic program and

checks high temperature limit switches for normally

closed contacts and pressure switches for normally

open contacts.The combustion air inducer is ener-

gized at low speed and the 120 VAC humidifier termi-

nal is energized,

2 - Once the control receives a signal that the low pres-

sure switch has closed, the combustion air inducer be-

gins a 15-second pre-purge in low speed,

3 - After the pre-purge is complete, a 20-second initial ig-

nitor warm-up period begins. The combustion air in-

ducer continues to operate at low speed.

Page 39

4 - Afterthe20-secondwarm-upperiodhasended,thegas

valveisenergizedonlowfire(firststage)andignitionoc-

curs.Atthesametime,thecontrolmodulesendsa sig-

nalto beginan indoorblower45-secondON-delay.

Whenthedelayends,theindoorblowermotorisener-

gizedonthelowfireheatingspeedandthe24Vhu-

midifierterminalisenergized.Theintegratedcontrol

alsoinitiatesa second-stageondelay(factory-setat

10minutes;adjustableto 15minutes).

5- Iftheheatingdemandcontinuesbeyondthesecond-

stageondelay,theintegratedcontrolenergizesthe

combustionairinducerathighspeed.Thecontrolalso

checksthehighfire(secondstage)pressureswitchto

makesureit isclosed.Thehighfire(secondstage)gas

valveisenergizedandtheindoorblowermotorisen-

ergizedforoperationatthehighfireheatingspeed.

6 - Whenthethermostatheatingdemandissatisfied,the-

combustionairinducerbeginsa 5-secondlowspeed

post-purge.Thefield-selectedindoorbloweroffdelay

begins.Theindoorbloweroperatesat the low-fire

heatingspeed.

7- Whenthecombustionairpost-purgeperiodis com-

plete,theinducerandhumidifierterminalsarede-en-

ergized.Theindoorblowerisde-energizedattheend

oftheoffdelay.

............................................................................................................................................................................................................................................

AWARNING

ACAUTION

At the beginning of each heating season, a qualified techni-

cian should check the system as follows:

Blower

Check the blower wheel for debris and clean if necessary.

The blower motors are prelubricated for extended bearing

life. No further lubrication is needed.

AWARNING

Filters

All G60UHV(X) filters are installed external to the unit. Fil-

ters should be inspected monthly, Clean or replace the fil-

ters when necessary to ensure that the furnace operates

properly. Replacement filters must be rated for high veloc-

ity airflow, Table 1 lists recommended filter sizes,

Flue And Chimney

Check the flue pipe, chimney and all connections for tight-

ness and to make sure there is no blockage,

Electrical

1 - Check all wiring for loose connections.

2 - Check for the correct voltage at the furnace (furnace

operating),

3 - Check amp-draw on the blower motor.

Motor Nameplate Actual

Cleaning the Heat Exchanger and Burners

NOTE -Use papers or protective covering in front of the fur-

nace during cleaning.

Cleaning the heat exchanger requires a steel spring

"snake," a reversible drill and a vacuum cleaner, The steel

spring snake may be constructed by purchasing a 4 ft, long

by 1/4 inch diameter steel wire cable and a 1/4 inch diame-

ter wire brush, These items are available at a hardware

store. Insert wire end of brush into the open end of the

spring cable. Crimp the cable around the brush so that the

brush is secured and will not come off during cleaning, At-

tach the other end of the cable to the reversible drill to com-

plete the tool for cleaning the heat exchanger.

1 - Turn off both electrical and gas power supplies to fur-

nace.

2 - Remove flue pipe and top cap from the unit. Label the

pressure switch wires, then disconnect them.

3 - Remove the four screws that secure the combustion air

inducer. Carefully remove the combustion air inducer to

avoid damaging blower gasket. If gasket is damaged, it

must be replaced to prevent leakage. See figure 1.

4 - Remove the collector box located behind the combus-

tion air inducer. Be careful with the collector box gas-

ket. If the gasket is damaged, it must be replaced to

prevent leakage.

5 - Label the wires from gas valve and rollout switches,

then disconnect them.

6 - Remove the four screws securing the burner box cover

and remove the cover.

7 - Disconnect gas supply piping. Remove six screws se-

curing the burner box /manifold assembly to the vesti-

bule panel and remove the assembly from the unit.

Take care not to damage the gasket.

8 - NOx units only - Remove the three screws that attach

the NOx insert to the corbel at the entrance to each

heat exchanger section. Carefully remove the NOx in-

sert from each section. See figure 29.

9 - Insert the brush end of cable snake into the top of one

of the heat exchanger openings, Do not force the

cable into the heat exchanger. Insert the cable and

operate the drill on slow speed, Move the cable in and

out of the heat exchanger section three or four times or

until sufficient cleaning is accomplished. Reverse drill

and slowly work the cable out of opening,

Page 40

G60UHV(X) BURNER & HEAT EXCHANGER REMOVAL

HEATEXCHANGER

GASKET

BOX

ASSEMBLY

GAS VALVE

ASSEMBLY

FIGURE 28

NOxlNSERTS

(X modelsonly)

FIGURE 29

10- Repeat procedure for each heat exchanger section.

11- After each of the top heat exchanger sections has been

cleaned, insert the brush end of the cable snake into

the bottom openings of each of the heat exchanger

sections and clean as described in step 8.

12- Remove the cable from the heat exchanger. Use a vac-

uum cleaner to remove debris knocked loose during

cleaning.

13- Attach the exhaust end (positive pressure) of the vacu-

um cleaner to the top of the heat exchanger section.

Any loose debris will be forced to the bottom of the heat

exchanger section. Vacuum debris from bottom open-

ings.

14- Replace collector box and combustion air inducer.

Check gaskets for damage. Damaged gaskets must be

replaced to avoid heat exchanger leaks. Replace all

screws to the collector box and combustion air inducer.

Failure to replace all screws may cause leaks.

15- To clean the burner, run a vacuum cleaner with a soft

brush attachment over the face of burners. Visually in-

spect inside the burners and crossovers for any blockage

caused by foreign matter. Remove any blockage.

16- NOx units only - Reattach the NOx inserts to the cor-

bels at the entrance to each heat exchanger opening.

See figure 29.

17- Re-install gasket and burner box /manifold assembly

onto the vestibule panel. Replace burner box cover

and re-secure using screws.

NOTE -Gasket must be replaced if it was damaged

during disassembly.

18- Reconnect wires to pressure switch, roll-out switches,

gas valve and combustion air inducer. Refer to unit wir-

ing diagram.

19- Re-install top cap and re-secure vent pipe to combus-

tion air inducer outlet.

20- Reconnect gas supply piping.

21- Turn on power and gas supply to unit.

22- Set thermostat and check for proper operation.

23- Check all piping connections, factory and field, for gas

leaks. Use a leak detecting solution or other preferred

means,

CAUTION

24- Ira leak is detected, shut gas and electricity offand

repair leak.

25- Repeat steps 23 and 24 until no leaks are detected.

26- Replace front access panel.

Page 41

ThefollowingrepairpartsareavailablethroughindependentLennoxdealers.Whenorderingparts,includethecomplete

furnacemodelnumberlistedontheCSAInternationalnameplate-- Example:G60UHV(X)-36A-070-7.

CabinetParts

Upperaccesspanel

Blowerpanel

Topcap

ControlPanelParts

Transformer

Two-stage,variablespeedintegratedcontrolboard

Doorinterlockswitch

Circuitbreaker

BlowerParts

Blowerwheel

Blowerhousing

Motor

Motorelectronics

Powerchoke(1hponly)

Motormountingframe

Motorcapacitor

Blowerhousingcutoffplate

HeatingParts

FlameSensor

Heatexchangerassembly

Gasmanifold

Two-speedcombustionairinducer

Two-stagegasvalve

Mainburnercluster

Mainburnerorifices

Pressureswitch

Ignitor

Primarylimitcontrol

Flamerolloutswitch

Secondarylimit

Page42

FLASH CODE

(x. Y)

Pulse

Heartbeat

X+Y

Pulse

Heartbeat

1+2

1+3

2+3

2+4

2+5

2+6

2+7

3+1

4+1

4+2

4+3

4+5

4+6

4+7

4+8

5+1

5+2

5+3

5+4

5+6

ISTATUS /ERROR DESCRIPTION

FLASH CODE DESCRIPTIONS

A 114 second flash followed by four seconds of off time.

Constant 1/2 second bright and 1/2 second dim cycles.

LED flashes X times at 2Hz, remains off for two seconds, flashes Y times at 2Hz, remains off for four

seconds, then repeats.

Power on - Standby.

Normal operation - signaled when heating demand initiated at thermostat.

FLAME CODES

Low flame current -- run mode.

Flame sensed out of sequence -- flame still present.

PRESSURE SWITCH CODES

Low pressure switch failed open.

Low pressure switch failed closed.

High pressure switch failed open.

High pressure switch failed closed.

Low pressure switch opened during ignition trial or heating demand.

LIMIT CODE

Limit switch open.

WATCHGUARD CODES

Watchguard -- Exceeded maximum number of retries.

Watchguard -- Exceeded maximum number of retries or last retry was due to pressure switch opening.

Watchguard -- Exceeded maximum number of retries or last retry was due to flame failure.

Watchguard -- Limit remained open longer than three minutes.

Watchguard -- Flame sensed out of sequence; flame signal gone.

Ignitor circuit fault -- Failed ignitor or triggering circuitry.

Low line voltage.

HARD LOCKOUT CODES

Hard lockout -- Rollout circuit open or previously opened.

Control failed self check, internal error (control will restart if error recovers).

No Earth ground (control will restart if error recovers).

Reversed line voltage polarity (control will restart if the error recovers).

Low secondary (24VAC) voltage.

Page 43

HEATING SEQUENCE OF OPERATION

NORMAL AND ABNORMAL HEATING MODE

I POWER ON I

CONTROL SELF-CHECK OKAY?

POLARITY OKAY?

YES

IS THERE A

PROPER GROUND?

YES _

I._ POLARITY REVERSED,

STATUS ERROR CODE 5 + 4,

.__.1 SIGNAL HOLDS UNTIL UNIT IS PROPERLY GROUNDED.

STATUS ERROR CODE 5 + 3.

NORMAL OPERATION:

STATUS LED -- PULSE

GAS VALVE OFF. COMBUSTION AIR INDUCER OFF.

INDOOR BLOWER OFF. (RESET CONTROL BY

TURNING MAIN POWER OFF.)

COMBUSTION AIR INDUCER OFF.

INDOOR BLOWER ON. HAS PRIMARY OR

THERMOSTAT CALLS FOR HEAT:

STATUS LED -- HEARTBEAT

YES

PRIMARY AND SECONDARY LIMIT

SWITCHESyEs_LOSED?

ROLLOUT SWITCH CLOSED?

YES _

FIRST (LOW) STAGE PRESSURE SWITCH [.NO

CONTACTS OPEN?

YES _

I SECOND (HIGH)coNTACTSYESSTAGE_ PRESSUREOPEN? SWITCH I_

r I

I TWO-STAGE OR SINGLE-STAGE THERMOSTAT i._..._

LCALL FOR HEAT 1

STATUS LED -- HEARTBEAT

ICONTINUED ON NEXT PAGE I

60-MINUTE LIMIT WATCHGUARD MODE.

GAS VALVE OFF, COMBUSTION AIR INDUCER

OFF, INDOOR BLOWER OFF WITH DELAY.

STATUS ERROR CODE 4 + 5.

SECONDARY LIMIT RESET WITHIN 3 MINUTES? I y_:.q

STATUS ERROR CODE 3 + 1.

GAS VALVE OFR COMBUSTION AIR INDUCER ON.

INDOOR BLOWER ON.

STATUS ERROR CODE 5 + 1.

SEQUENCE HOLDS UNTIL ROLLOUT SWITCH IS

RESET AND MAIN POWER IS INTERRUPTED OR

T'STAT IS CYCLED OFF/ON FOR 3 SEC. MINIMUM,

GAS VALVE OFF. COMBUSTION AIR INDUCER OFR

INDOOR BLOWER OFR CONTROL REMAINS UNTIL

PRESSURE SWITCH IS DETECTED OPEN.

STATUS ERROR CODE 2 + 4

GAS VALVE OFR

COMBUSTION AIR INDUCER OFF.

INDOOR BLOWER OFR

CONTROL WILL NOT ATTEMPT SECOND-STAGE

OPERATION DURING THIS HEAT DEMAND.

FIRST-STAGE OPERATION WILL BE ATTEMPTED.

STATUS ERROR CODE 2 + 6.

YES

Page 44

CONTINUED

HEATING SEQUENCE OF OPERATION

I FIRST-STAGE(LOWF,RE)PRESSUREISWITCH CLOSED WITHIN 2.5 MINUTES?

YES _

15-SECOND COMBUSTION AIR INDUCER I

PRE-PURGE INITIATED BY CLOSED FIRST-STAGE i

PRESSURE SWITCH (or 15 SECOND

INTER-PURGE PERIOD.)

STATUS LED -- HEARTBEAT.

[ IGNITORWARM-UPI_0SECONDStJSTATUS LED -- HEARTBEAT.

YES _

Iis IGNITOR INTACT AND CONNECTED? i

YES

I AT END OF IGNITOR 20 SECOND WARM UP I

PERIOD, 4-SECOND TRIAL FOR IGNITION. I

GAS VALVE OPENS, IGNITOR ENERGIZED DURING

4-SECOND TR AL UNT L FLAME SENSED,

YES

I 4-SECOND FLAME STABILIZATION PERIOD. I NO

I FLAME RECTIFICATION CURRENT CHECK

CAN FLAME BE PROVEN WITHIN 4

SECONDS AFTER GAS VALVE OPENS?

( > 0.20 microamps)

FLAMEyESPRESENT?_ IN--_-_°

CONTINUED ON NEXT PAGE J

[

---4

THERMOSTAT CALLS FOR HEAT

STATUS LED - HEARTBEAT.

(Refer to box A on previous page)

GAS VALVE OFR COMBUSTION AIR INDUCER

OFF. INDOOR BLOWER OFF. UNIT WILL RETRY

AFTER 5-MINUTE WAIT PERIOD,

STATUS ERROR CODE 2 + 3.

COMBUSTION AIR INDUCER OFF, IGNITOR OFF.

SIGNAL HOLDS UNTIL IGNITOR IS REPLACED

OR RECONNECTED,

STATUS ERROR CODE 4 + 7.

IS VOLTAGE ABOVE 90 VOLTS?

.o_

COMBUSTION AIR INDUCER OFF, IGNITER OFF.

SIGNAL HOLDS UNTIL VOLTAGE RISES ABOVE 95

VOLTS, STATUS ERROR CODE 4 + 8.

GAS VALVE OFF. COMBUSTION AIR Lt _r

INDUCER ON. INDOOR BLOWER OFF. I

STATUS LED -- HEARTBEAT.

HAS CONTROL FAILED TO SENSE

FLAME FOR FIVE CONSECUTIVE TRIES NO

DURING A SINGLE HEAT DEMAND?

YES lr

WATCHGUARD MODE. GAS VALVE OFF,

COMBUSTION AIR INDUCER OFR

INDOOR BLOWER OFF.

STATUS ERROR CODE 4 + 1.

IS 60-MINUTE RESET PERIOD COMPLETE?

YES _

HAS CONTROL RESET IGNITION SEQUENCE

FOUR (4) TIMES?

WATCHGUARD MODE,

STATUS ERROR CODE 4 + 3. I

YES

Page 45

YES

HEATING SEQUENCE OF OPERATION

CONTINUED

FLAME SIGNAL ABOVE

(>1.40 microamps)

I SINGLE-STAGE THERMOSTAT MODE I

'L (DiP SWITCH SET AT 'SINGLE") I'

YES _

START SECOND-STAGE RECOGNITION

ON DELAY (10 OR 15 MINUTES).

STATUS LED -- HEARTBEAT

ROLLOUT SWITCHES CLOSED?

YES

I FIRST-STAGE (LOW FIRE)PRESSURE SWITCH CLOSED?

YES _l _ NO

FIRST-STAGE HEAT DEMAND SATISFIED?

YES _

GAS VALVE OFF, COMBUSTION AIR INDUCER

OFF FOLLOWING POST PURGE.

INDOOR BLOWER OFF WITH DELAY

STATUS LED -- PULSE

SECOND-STAGE 30-SECOND DELAY ON BEGINSJ

STATUS LED -- HEARTBEAT.

YES _

SECOND-STAGE COMBUSTION AIR INDUCER

ON. SECOND-STAGE GAS VALVE ON. HIGH

HEAT INDOOR BLOWER SPEED ON.

STATUS LED -- HEARTBEAT.

q SECOND-STAGE HEAT DEMAND.

SECOND-STAGE HEAT DEMAND REQUIRED?

YES _

t SECOND STAGE PRESSURE SWITCH CLOSED?

ABNORMAL FLASH CODE.

NOTE -IF SECOND-STAGE PRESSURE SWITCH

WAS ORIGINALLY FOUND CLOSED,

ABNORMAL CODE WILL FLASH.

NO _IYES _

YES

SECOND-STAGE PRESSURE SWITCH CLOSED

IN LESS THAN TEN (10) SECONDS?

STATUS LED -- HEARTBEAT

YES _

CONTINUED ON NEXT PAGE

THERMOSTAT CALLS FOR HEAT.

STATUS LED -- HEARTBEAT

SEE BOX A.

LOW FLAME SIGNAL

(Does not affect control operation)

STATUS ERROR CODE 1 + 2.

I TWO STAGE THERMOSTAT MODE I_

I. (DIP SWITCH SET AT "TWO") j

YES _

I 45-SECOND INDOOR BLOWER ON DELAY BEGINS.

STATUS LED -- HEARTBEAT.

YES _

_, PRIMARY & SECONDARY LIMIT SWITCHES

CLOSED?

GAS VALVE OFF. COMBUSTION AIR INDUCER ON.

INDOOR BLOWER ON.

STATUS ERROR CODE 5 + 1. SEQUENCE HOLDS

UNTIL ROLLOUT SWITCH IS RESET AND MAIN

POWER IS INTERRUPTED OR THERMOSTAT

IS CYCLED OFF/ON FOR 3 SECOND MINIMUM.

I GAS VALVE OFF, COMBUSTION AIR INDUCER OFF,

INDOOR BLOWER ON.

STATUS ERROR CODE 3 + 1.

I HAS PRIMARY OR SECONDARY LIMIT

SWITCH CLOSED WITHIN 3 MINUTES?

(Indoor blower on low speed during 3-minute period

NO1,

I LIMIT SWITCH WATCHGUARD MODE. I

GAS VALVE OFF, COMBUSTION AIR INDUCER OFF,

INDOOR BLOWER OFF WITH DELAY LY..ES_

STATUS ERROR CODE 4 + 5

IS 60-MINUTE RESET PERIOD COMPLETE? |

GAS VALVE OFF. COMBUSTION AIR INDUCER ON.

INDOOR BLOWER OFF AFTER DELAY.

STATUS ERROR CODE 2 + 3. CONTROL RESTARTS

IGNITION SEQUENCE IF PRESSURE SWITCH

CLOSES WITHIN 2-1/2 MINUTES.

SECOND-STAGE PRESSURE SWITCH CLOSED

AT BEGINNING OF HEAT DEMAND?

STATUS ERROR CODE 2 + 6.

YES

._.o

ISECOND STAGE HEAT DEMAND

STATUS LED -- HEARTBEAT.

No f

RETURNS TO FIRST-STAGE HEAT MODE WHICH

CONTINUES UNTIL SECOND-STAGE PRESSURE

SWITCH CAN BE PROVEN or HEAT DEMAND IS

SATISFIED. FIVE (5) MINUTE WAIT PERIOD

INITIATED BEFORE RETRY. WERE 5 ATTEMPTS

MADE FOR SECOND-STAGE HEAT?

YES _

CONTINUES FIRST-STAGE HEATING DEMAND.

WILL NOT REATTEMPT SECOND-STAGE

HEATING DEMAND,

STATUS ERROR CODE 2 + 5.

Page 46

CONTINUED

HEATING SEQUENCE OF OPERATION

SEE BOX A

NORMAL OPERATION.

SEE BOX B

THERMOSTAT CALLS FOR HEAT.

I SECOND-STAGE (HIGH FIRE) HEAT

PRESSURE SWITCH CLOSED?

YES _

I HEAT DEMAND SATISFIED?

STATUS LED -- HEARTBEAT.

YES YES 1

[ SINGLE-STAGE THERMOSTAT MODE 1 I '

(DiP SWITCH SET AT "SINGLE") I I

L 1 I.

YES I

GAS VALVE OFF, COMBUSTION AIR

INDUCER OFF AFTER 5-SECOND

LOW SPEED POST PURGE PERIOD,

INDOOR BLOWER OFF DELAY

INITIATED ON LOW HEAT SPEED,

STATUS LED - HEARTBEAT.

DEMAND FOR HEAT SATISFIED.

POWER ON STAND BY.

STATUS LED -- PULSE.

RETURN TO FIRST-STAGE HEAT MODE.

FIRST-STAGE CONTINUES UNTIL SECOND-

STAGE PRESSURE SWITCH CAN BE PROVEN

or HEAT DEMAND IS SATISFIED. A FIVE (5)

MINUTE WAIT PERIOD IS INITIATED BEFORE

RETRY. WERE 5 ATTEMPTS MADE FOR

SECOND-STaGE HEAT?

NO ,_

SEE BOX C

FIRST-STAGE HEAT DEMAND SATISFIED? I

TWO STAGE THERMOSTAT MODE? 3,

(DIP SWITCH SET AT "TWO") I

YES'f

._ SECOND STAGE HEAT

FIRST AND SECOND STAGE HEAT DEMAND SASTISFIED?

DEMAND SATISFIED SIMULTANEOUSLY. STATUS LED -- HEARTBEAT.

STATUS LED -- HEARTBEAT.

YES _

I GAS VALVE, COMBUSTION AIR INDUCER

AND INDOOR BLOWER RETURN TO FIRST-

STAGE OPERATION.

STATUS LED -- HEARTBEAT.

I FIRST STAGE HEAT DEMAND SATISFIED? I

YES

4 GAS VALVE OFF. COMBUSTION AIR INDUCER

OFF AFTER 5-SECOND LOW SPEED POST-

PURGE PERIOD. INDOOR BLOWER OFF.

DELAY INITIATED ON LOW HEAT SPEED,

STATUS LED -- PULSE,

Page 47

COOLINGSEQUENCEOF OPERATION

I POWER ON I

IS POLARITY REVERSED?

I IS THERE NO

PROPER GROUND? 9

_YES

THERMOSTAT CALLS FOR FIRST-STAGE COOL. I

COMPRESSOR AND CONDENSER FAN

ENERGIZED.

INDOOR BLOWER ENERGIZED ON FIRST STAGE

COOL SPEED AFTER 2 SECOND DELAY.

SIGNAL POLARITY REVERSED.

CONTROL WILL CONTINUE TO CALL FOR COOLING

IN THIS CONDITION,

STATUS ERROR CODE 5 + 4.

SIGNAL IMPROPER GROUND AT LED.

CONTROL WILL CONTINUE TO CALL FOR COOLING

IN THIS CONDITION,

STATUS ERROR CODE 5 + 3.

_1 FIRST-STAGE DEMAND FOR COOL SATISFIED?

I THERMOSTAT CALLS FOR SECOND-STAGE COOL,

I ,NDOORBLOWERRAMPSUPTOSECOND-STAGECOOLSPEEDI

ISECOND-STAGEDEMANDFORCOOLSAT'SF'ED?I

YES 4, I

I_ COMPRESSOR AND CONDENSER FAN DE-ENERGIZED.

NDOOR BLOWER DE-ENEG ZED.

Page 48

CONTINUOUSLOW SPEED FAN SEQUENCE OF OPERATION

YES

I THERMOSTAT CALLS FOR FIRST STAGE COOL.

YES

I INDOOR BLOWER RAMPS TO FIRST STAGE

COOLING SPEED AFTER A 2-SECOND DELAY,

FIRST-STAGE COOL DEMAND SATISFIED?

NO_

I SECONDSTAGECOOLDEMAND I

I INDOOR BLOWER RAMPS TO SECOND

STAGE COOL SPEED

I SECONDSTAGECOOLDEMANDSAT,SFIED?I

YES

I INDOOR BLOWER RAMPS DOWN TO FIRST STAGECOOL SPEED. p

MANUAL FAN SELECTION MADE AT THERMOSTAT

AFTER 2 SECOND DELAY, INDOOR BLOWER IS

ENERGIZED ON CONTINUOUS FAN SPEED.

I I

YES

THERMOSTAT CALLS FOR FIRST-STAGE HEAT. I

YES

AFTER 45-SECOND DELAY, INDOOR BLOWER I

SWITCHES TO LOW HEAT SPEED,

FIRST-STAGE HEAT DEMAND SATISFIED. _YI

THERMOSTAT CALLS FOR SECOND-STAGE HEAT. I

YES

INDOOR BLOWER SWITCHES TO HIGH HEAT SPEED I

AFTER 30-SECOND RECOGNITION PERIOD.

YES

SECOND-STAGE HEAT DEMAND SATISFIED. I

YES

INDOOR BLOWERHEATRAMPSsPEED.DOWNTO LOW I

Page 49

JobName

JobLocation

Installer

UnitModelNo.

SerialNo.

Heating Section

Electrical Connections Tight?

Line Voltage

Blower Motor Amps

Fuel Type: Natural Gas? []

[]

Job No.

City

Technician

Blower Motor H.P.

Gas Piping Connections

Tight & Leak-Tested?

LP/Propane Gas? []

Date

State

Furnace Btu Input (High fire)

Low Fire Manifold Pressure

High Fire Manifold Pressure

Flue Connections Tight? []

w.c.- Nat,:

Line Pressure

__ w.c. - LP/Propane

w.c. - LP/Propane

Proper Draft? []

Combustion Gas Tested (high fire and low fire)?

Blower ON delay confirmed? []

(45 Seconds Fixed On)

Blower OFF Delay Setting (60, 90, 120 or 180)?

Filter Clean & Secure? []

Thermostat

Heat Anticipator Setting?

[] 002 [] CO

External Static Pressure?

(0.8 maximum)

Temperature Rise

Thermostat Level? []

Page 50

LENNOX Furnace/Heater, Gas Manual L0806201

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