TRANE Package Units(both Units Combined) Manual L0904646

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

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I STALLATIO
O
RATi
TE
CE
ALL phases of this installation must comply with
NATIONAL, STATE AND LOCAL CODES

Model:
YCP024FIUM
YCP030FIL-M
YCP036F1,3UM
YCP036F1,3,4-H

YCP042F1,3-M
YCP048F1,3,4-H
YCP060F1,3,4-M
BAYLIFT002A
LIFTING LUG KIT

YCP-IIOM-lC
18=EB21 D6=4
Product Section
Product
Model
Literature Type
Sequence
Date
File No.
Supercedes

Unitary
Rooftop Air Conditioning
YCP
installation, Operation, Maintenance
1B
November 2003
SV-UN-RT-YCP-IOM-1C 11/03
YCP-IOM-1B

Single Package Gas/Electric
12 SEER Convertible
2 -5Ton

IMPORTANT -- This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work.

All phases of this installation must comply with the NATIONAL, STATE & LOCAL CODES. In the absence of local codes, the
installation must conform with National Electric Code -- ANSI/NFPA 70 or "LATEST REVISION."

Since Trane has a policy of continuous product and product data improvement,
it reserves the right to change design and specification without notice.

GENERAL
IMPORTANT:

Read this entire
beginning

manual

installation

INFORMATION

before
procedures.

/,WARNIN G: BOD,LY
,NJURY
CAN
RESU'T
FROM
HIGH VOLTAGE ELECTRICAL COMPONENTS, FAST MOVING FANS,
AND COMBUSTIBLE GAS. FOR PROTECTION FROM THESE
INHERENT HAZARDS DURING INSTALLATION AND SERVICING,
THE ELECTRICAL SUPPLY MUST BE DISCONNECTED AND THE
MAIN GAS VALVE MUST BE TURNED OFF. IF OPERATING CHECKS
MUST BE PERFORMED WITH THE UNIT OPERATING, IT IS THE
TECHNICIANS RESPONSIBILTY TO RECOGNIZE THESE HAZARDS
AND PROCEED SAFELY.
Read this manual carefully before attempting to install, operate,
or perform maintenance on this unit. Installation and maintenance should
be performed by qualified service technicians
only.
As shipped from the factory, this unit is for use with natural gas
only, and is listed by Underwriters Laboratory.
Model YCP-F heating/cooling
units are designed for outdoor
mounting with a vertical condenser discharge.
They can be
located either at ground level or on a roof, in accordance with
local codes or National Fuel Gas Code (ANSI-Z223.1A)
Latest
Revision. Since these units are designed exclusively for outdoor
operation, additional flue venting systems are not required.
Each unit contains an operating charge of Refrigerant-22
as
shipped.

IMPORTANT: DO NOT CONNECT GAS PIPING TO THE UNIT
UNTIL A LINE PRESSURE TEST HAS BEEN COMPLETED.
DAMAGE TO THE GAS VALVE MAY RESULT IN AN UNSAFE
CONDITION. THIS UNIT SHOULD NEVER BE EXPOSED TO
GAS LINE PRESSURE IN EXCESS OF 14 INCHES WATER
COLUMN. (1/2 PSIG)
IMPORTANT:
RECONNECT ALL GROUNDING DEVICES.
ALL PARTS OF THIS PRODUCT CAPABLE OF CONDUCTING
ELECTRICAL CURRENT ARE GROUNDED. IF GROUNDING
WIRES, SCREWS, STRAPS, CLIPS NUTS OR WASHERS
USED TO COMPLETE A PATH TO GROUND ARE REMOVED
FOR SERVICE, THEY MUST BE RETURNED TO THEIR ORIGINAL POSITION AND PROPERLY FASTENED.
IMPORTANT: ALL POWER LEGS MAY NOT BE BROKEN BY
CONTACTORS. SEE WIRING DIAGRAM ON UNIT CONTROL
BOX COVER.
THIS UNIT, AS SHIPPED FROM THE
SIGNED FOR NATURAL GAS ONLY.

FACTORY,

IS DE-

BEFORE STARTING THE COMPRESSOR, THE CRANKCASE
HEATER SHOULD BE ENERGIZED FOR EIGHT HOURS

INSPECTION
1. Check for damage after the unit is unloaded. Report promptly,
to the carrier, any damage found to the unit. Do not drop the
unit.
IMPORTANT:
when hoisting
top).

The use of "spreader
bars" is required
the unit (to prevent damage to sides and

2. Check the unit's nameplate to determine if the unit is correct
for the intended application.
The power supply must be
adequate for both the unit and all accessories.
3. Check to be sure the refrigerant charge has been retained
during shipment. Access to 1/4" flare pressure taps may be
gained by removing the furnace compartment access panel.

The following

warning

complies

with State of California

WARNING:

law, Proposition

65.

Hazardous
Gasses!

Exposure to fuel substances or by-products of incomplete
fuel combustion is believed by the state of California to
cause cancer, birth defects, or other reproductive harm.

NOTICE
Warnings

_WARNING:

and Cautions

appear at appropriate locations
Read these carefully.

Indicates a potentially

hazardous

throughout

this manual.

situation which, if not avoided,

could

result in death or serious injury.
_CAUTION"

Indicates

a potentially

hazardous

situation which, if not avoided,

result in minor or moderate injury. It may also be used to alert against
and where property-damage-only
accidents could occur.
Page 2

may

unsafe practices

Dwg. No. X664209 P01

TYPICAL

ROOFTOP

iNSTALLATiON

(YCP024=036F=L/M

Models

WiTH FULL

PERIMETER

CURBS

on BAYCURB030/38A)

•

CANT

FIELD
SUPPLIED
SUPPORTS
AT EACH
END
OF CURB

SUPPLIED
STRIP

FIELD
SUPPLIED
RIGIDINSULATION

ROOF

SUPPLY

AIR

DUCT

TYPICAL

ROOFTOP

iNSTALLATION

RETURN

MOUNTING
CURB

AIR

DUCT

WiTH

BAYCURB030/38A

(YC P036F =H;YC P042 F=M ;YC P048F =H;YC P060 F=M)

SEE

NOTE

SEE NOTE 2

•

FIELD SUPPLIED
CANT
STRIP

\
FIELD
SUPPLIED
RIGIDINSULATION

1. The YCP042F-M :YCP036F-H
past this end of the curb ONLY.

/
SUPPLY AIR
DUCT

NOTES:
models extend out

FIELD SUPPLIED
SUPPORTS
AT EACH END
OFCURB

ROOFMOUNTING
CURB

RETURN
AIR
DUCT

2. Only the YCP048F,060F models extend past both the
end and the side of the curb as illustrated•

Dwg. No. X664209 P01

Page 3

DiMENSiONAL

MODEL

CORNER WEIGHT
W1

(LBS)

UNIT

WEIGHT

YCP024F-L

109

340

YCP024F-M

113

357

YCP030F-L

111

356

YCP030F-M

114

363

YCP036F-L

114

372

YCP036F-M

119

379

YCP036F-H

100

124

393

105

127

407

YCP048F-H

121

106

134

154

515

YCP069F-M

133

109

134

165

542

J
21

21-I/4

21-7/8

25-3/16

18 9/16

11-I/16

6-9/16

6-13/16

56-I/2

29-3/16

18-9/16

11-I/16

6-9/16

6-13/16

65-I/8

Page 4

56-I/2

64
YCP042F-M

DATA

29-3/16

33-3/8

18-9/16

21-1/16

11-I/16

15-I/16

6-9/16

4-15/16

11-1/8

9-I/8

20-1/2

25-I/8

20-1/2

28-1/2

25-3/8

30-1/4

25-3/16

28-7/8

21-15/16

17-I/2

4-7/16

17-I/2

8-3/4

3-I/2

8-5/16

Dwg. No. X664209 P01

DiMENSiONAL

YCP024=060F

OUTLINE

DATA
= FRONT

! 52 MM
[61

CONTROL
ACCESS

BOX
PANEL

I40

7FLUE
(FIELD

INS1ALLED/

GAS
VALVE
ACCESS
_CONDENSER
& GUARD

_2B

MM
FOR
GAS

II"1

DIA,

15 MM [1/2J
CONNECTION

COl}

d.O.
N.P[.

0667977

RECOMMENDED
SERVICE
CLEARANCE
BACK
LEFT
RIGHT

* 6.0"

SIDE

30.0"

SIDE

24.0"

FRONT

42.0"

CLEARANCE TO
COMBUSTIBLE MATERIAL

18" WITH FRESH AIR ACCESSORY
30" WITH ECONOMIZER

56 I/2

25 3/16

25 I/8

56 I/2

29 3/16

25 I/8

29 3/16

26 9/16

33 5/8

27 15/16

MODEL
YCPO24F-L

BOTTOM

0.0"

BACK

1.0"

LEFT SIDE

6.0"

RIGHT SIDE

6.0"

FRONT SIDE

12.0"

TOP

36.0"

YCPO24F-M
YCPO30F-L
YCPO30F-M
YCPO36F-L
YCPO36F-M
YCP036F-H
YCPO42F-M
YCP048F-H
65

1/8

YCPO60F-M

Dwg. No. X664209 P01

Page 5

CONVERTING

HEATER

HORIZONTAL

TO DOWNFLOW

EXCHANGER
TUBES

NOTE
SUPPLY

OPENING

1. REMOVE SCREW NEAREST
TO THE
OPENINGAND
PULLTHE PANEL FIRMLY
TOWARD THE OUTSIDE OF THE U NIT TO
DISENGAGE THE BACK ATTACHMENT.
RETURN

SHEET
METAL
SCREWS

HORIZONTAL
RETURN
AIR COVER

OPENING

2. REMOVE
RIGHT HAND SCREW AND
MOVE PANEL TO THE RIGHT OR REMOVE BOTH SCREWS.

HORIZONTAL
SUPPLY
AIR COVER

REQUIRED CLEARANCE
FOR UNIT INSTALLATION
AND ROOF PENETRATION
HOLE SiZE REQUIRED

SERVICE
CLEARANCE
LINES

SIDE RAIL

WOOD NAILER"

SERVICE CLEARANCE
MODEL NO.
YCPO24-036F-L/M
YCP036F-H
YCP42F-M
YCP048F-H,

060F-M

& PENETRATION

DIMENSIONS

42"

30"

*6"

24"

36"

25"

42"

30"

"12"

30"

44"

25"

42"

30"

"12"

36"

50"

25"

HOLE IN ROOF

* 18" WITH FRESH AIR ACCESSORY
* 30" WITH ECONOMIZER

Page 6

Dwg. No. X664209 P01

LOCATIONS
HORIZONTAL

AND RECOMMENDATIONS

AIRFLOW APPLiCATiON

1. These units are design certified for outdoor installations. These
units may be installed directly on wood flooring or on Class A,
Class B, or Class C roof covering material. The discharge air
from the condenser fans must be unrestricted for a minimum of
3 feet above the unit.
NOTE:

3. See the unit's nameplate for the absolute minimum clearance
between the unit and any combustible surface(s).
IMPORTANT:
1. Remove the Flue and Air Inlet Hood with gasket from the return
air section of the unit.

The unit is shipped for horizontal installation.
The screws that attach the flue and air inlet hood will be installed
in their proper location at the factory. Therefore, they must be
removed and then used to attach the flue and the air inlet hood.

The Air Inlet Hood in the combustion blower access panel must
have adequate clearance around the air opening into the
combustion area. See Outline Drawing, Figure 4.
2,

Examine all flue product-carrying areas of the furnace, its vent
system, and the main burner for safe operation. A periodic
inspection of the furnace should be made by a qualified service
agency at the start of each heating season.

NOTE:
Outdoor air or other requirements during heating
operation that result in supply air temperatures below 80
degrees F or return air temperatures below 50 degrees F may
cause flue gas condensate to form and is to be avoided.

Replacement parts tistfor this Gas/ElectricAir Conditioner, may be
obtained by contacting your local manufacturer representative.
NOTE: If any internal accessories are to be added to the unit,
install them at the shop if at all practical.
2. Location of the unit must allow service clearance around it.
Clearance of the unit must be given careful consideration. See
Figure 6.
IMPORTANT:
Air outlet duct must have 1" clearance
combustible material downstream from the unit.

Remove the packaging material from the components and
secure the Flue and Air Inlet Hood with the gasket to the unit
with sheet metal screws as illustrated in Figure 5. See "Firing
Rate Selection" section for additional information.

DOWNFLOW APPLICATION

-- CURB MOUNTING

1. The
Roof
Mounting
Curb,
(field
assembled
BAYCURB030,038,033,034A),
or a field fabricated curb must
be in place before the unit is hoisted to the roof top.

3. Check the handling facilities to ensure the safety of personnel
and the unit(s).

The Roof Mounting Curb (frame) must be installed on a flat,
level section of the roof (maximum of 1/4" per foot pitch)
and provide a level mounting surface for the unit. In
addition, be sure to provide sufficient height above the roof
to prevent water from entering the unit.

4 CAUTION MUST BE TAKEN AT ALL TIMES TO AVOID
PERSONAL INJURIES AND/OR DAMAGE TO EQUIPMENT

NOTE: This unit was shipped for horizontal installation. Convert to downflow per instructions:

5. The unit must be mounted level for proper drainage of water
through the holes in the base pan.

Remove covers from the downflow supply and return air openings and place them over the horizontal supply return air
openings (painted side out) and secure with sheet metal screws.
See Figure 5.

6. The unit must not be exposed to direct roof water runoff.
7. Flexible duct connectors must be of a flame retardant material.
All duct work outside of the structure must be insulated and
weatherproofed in accordance with local codes.
8. Holes through exterior walls must be sealed in accordance with
local codes.
9. All fabricated outdoor ducts should be as short as possible.

4. Be sure the hole in the structure for the ducts is large enough
to accommodate the fabricated ducts and the insulation surrounding them. See Figure 6.

CLEARANCES
1. The recommended clearances for single-unit installations are
illustrated in Figures 4 and 6. These minimum requirements are
not only an important consideration when determining unit
placement, but they are also essential to ensure adequate
serviceability, maximum capacity, and peak operating efficiency.
2. Any reduction of the unit clearances indicated in these illustrations may result in condenser coil starvation or the recirculation
of warm condenser air. Actual clearances which appear to be
inadequate should be reviewed with a local engineer.
Dwg. No. X664209 P01

Be sure the mounting curb spans structural members (trusses)
of the roof, thereby providing sufficient support for the weight of
the unit, the curb, the duct(s), and any factory or field installed
accessories. See Figures 1, 2, 9, 10, and 11.

Note: If any internal accessories are to be added to the unit,
install them at the shop if at all practical.
5,

These units are design certified for outdoor installation. These
units may be installed directly on wood flooring or on Class A,
Class B, or Class C roof covering material. The discharge air
from the condenser fans must be unrestricted for a minimum of
3 feet above the unit.
The air inlet hood in the combustion blower access panel must
have adequate clearance around air openings into the combustion area. See Outline Drawing, Figure 4. continuedonnextpage

Page 7

LOCATIONS

AND RECOMMENDATIONS

continued from page 7

Examine all flue product-carrying areas of the furnace, its vent
system, and the main burner for safe operation. A periodic
inspection of the furnace should be made at the start of each
heating season.

15. Access and service clearances for the unit must be given
careful consideration when locating the duct entrance openings. Figure 4 provides unit dimensions.
16. All fabricated outdoor ducts should be as short as possible.

CLEARANCES
Replacement parts list for this Gas/Electric Air Conditioner may
be obtained by contacting your local manufacturer representative.

The recommended clearances for single-unit installations are
illustrated in Figures 4 and 6. These minimum requirements are
not only an important consideration when determining unit
placement, but they are also essential to ensure adequate
serviceability, maximum capacity, and peak operating efficiency.

Any reduction of the unit clearances indicated in these illustrations may result in condenser coil starvation or the recirculation
of warm condenser air. Actual clearances which appear to be
inadequate should be reviewed with a local sales engineer.

6. Location d the unit must allow for service clearance around it.
Clearance of the unit must be given careful consideration. See
Figure 4.
7. IMPORTANT: Air outlet duct must have one (1) inch clearance to combustible material downstream from the unit.
8. Exhaust vents or other sources of contaminated air should not
be near the unit's air inlet, if outside air is to be introduced as
make-up air or a ventilation feature is to be used.
9. Check the handling facilities to ensure the safety of personnel
and the unit(s).
10. Caution must
injuries and/or

be taken at all times to avoid
damage to the equipment.

IMPORTANT:
1. Remove the Flue and Air Inlet Hood with the gasket from the
return air section of the unit.

personal

11. The unit must be mounted level for proper drainage of water
through the holes in the base pan.
12. The unit must not be exposed to direct roof water runoff.

The screws that attach the flue and air inlet hood will be installed
in their proper location at the factory. Therefore, they must be
removed and then used to attach the flue and air inlet hood.
2. Remove the packaging material from the components and
secure the Flue and Air Inlet Hood with the gasket to the unit
with sheet metal screws as illustrated in Figure 16 on page 14.

13. Flexible duct connectors must be of a flame retardant material.
All duct work outside of the structure must be insulated and
weatherproofed in accordance with local codes.

14. Roof flashing must be installed to seal the roof curb cavity and
must conform to local building codes.

INSTALLATION
UNIT SUPPORT
If the unit is to be roof mounted, check the appropriate building
codes for weight distribution requirements. Refer to the applicable
roof curb mounting instruction.
Check the unit's nameplate for
supply voltage required. Determine if adequate electrical power is
available. The furnace may be installed on Class A, B, or C roofing
material.

PLACING AND RIGGING
1. Before preparing the unit for lifting, check the outline drawing for
center of gravity for lifting safety. Because d placement of
internal components, the unit's weight may be unevenly distributed. Approximate unit weights are given in Figure 2, page 3.
NOTE. Accessory BA YLIFTOO2AA, a kit of four (4) lifting lugs, is ]
required for rigging the unit for hoisting. See Figure 7, insert B.

LOCATION AND CLEARANCES
2,

Insert the four lifting lugs in the openings provided in the drip lip
on the perimeter of the unit. See Figure 7, insert B. Atap or jerk
to the lug will overcome the interference that arises due to the
nipple on the lug.

Before hoisting the unit, be sure that the proper method of
rigging is used, with straps or slings and spreader bars for
protection during lifting. Always test-lift the unit to determine the
exact unit balance and stability before hoisting it to the installation location.

Installation d the unit should conform to local building codes or, in
the absence of local codes, to the National Fuel Gas Code,
ANSlZ223.1, Latest Revision, and the National Electrical Code.
Canadian installations must conform to CSA and local codes.
Select a location that will permit adequate combustion and ventilation air in accordance with Section 5.3, Air For Combustion and
Ventilation, of the National Fuel Gas Code, ANSlZ223.1, Latest
Revision, or applicable provisions of the local building code.

Page 8

Dwg. No. X664209 P01

iNSTALLATiON
IMPORTANT: Do not lift the unit without test lifting for
balance and rigging. Do not lift the unit in windy conditions
or above personnel.
Do not lift the unit by attaching a
clevis, hooks, pins, or bolts to the unit casing, casing
hardware, corner lugs, angles, tabs, or flanges. Failure to
observe these warnings may result in equipment damage.
4. When the curb and air ducts have been properly installed, the
unit is ready to be hoisted to the roof and set in position.
IMPORTANT:
ing the unit.

"Spreader

Bars" must be used when hoist-

5 IMPORTANT:
The unit must be lowered into position. The
P.V.C. rubber tape on the curb flange permits the unit to be
repositJoned if required without destroying the P.V.C. rubber seals affixed to the mounting curb.

PLACING THE UNiT ON A MOUNTING CURB
1. The unit is designed with a perimeter drip lip that is lower that
the unit base bar, see Figure 7, inset A.
2,

Position the unit drip lip down over and in contact with the
outside corner of the curb, as illustrated in Figure 8, insert A.
Continue to lower the unit on top d the curb, with the unit drip
lip astraddle and in contact with both the end and side rail of the
curb. The unit should now rest on top of the curb.

3. Take the two (2) hold-down brackets shipped with the curb and
secure the unit to the curb with hold-down brackets as illustrated in Figure 8, insert A.

OUTDOOR
COIL
END OF UNIT

BASE OF UNIT
REST ON TOP OF
CURB RAILS

DRIP LIP ON
PERIMETER OF UNIT

BAYLIFTO02_

DIMPLE

LIFTING LUGS

CURB

CORNER

NOTE:
THE INNER PERIMETER
OF THE DRIP LIP ON ALL UNITS
SHOULD
BE FLUSH WiTH THE OUTER PERIMETER
OF THE
CURB ON THE TWO SIDES SHOWN HERE SEE FIGURE 2 FOR
THE
LOCATION
OF THE
UNIT
OVERHANG
ON THE
YCX024-060G
MODELS•

®
EXISTING
SHEET METAL
t

SCREW

HOLD-DOWN
BRACKET
WITH
CURB

FLANGE OF
CURB

Dwg. No. X664209 P01

Page 9

iNSTALLATiON
ROOFTOP -- UNITS

4. Place the unit on the frame or roof curb. Refer to Figures 9 or
10.

For roof top applications using a field fabricated frame and ducts,
use the following procedure:
1. The frame must be located and secured by bolting or welding
to the roof. Flashing is required.
2. The hole in the roof must be prepared in advance of installing
the unit.

5. Secure the unit to the frame or roof curb.
6. Insulate any ductwork outside of the structure with at least two
(2) inches of insulation and then weatherproof, There must be
a weatherproof seal where the duct enters the structure,
7. Complete the installation according to the instructions
following sections of this manual.

in the

3. Secure the ducts to the roof.

TYPICAL

ROOFTOP

APPLICATION

WITH FRAME

(YCP024-060F)
\

TYPICAL

ROOFTOP

APPLICATION

(YCP024-060F

WITH FRAME

MODELS)

FLUE

_._

INLET

HOOD

DUCT

ROOF

FLASHING

FRAME

Page 10

Dwg. No. X664209 P01

iNSTALLATiON
GROUND LEVEL -= HORIZONTAL

UNITS

For ground level installations, the unit should be positioned on a pad
the size of the unit or larger. The unit must be level on the pad. The
pad must not come in contact with the structure (See Figure 11 .) Be
sure the outdoor portion of the supply and return air ducts are as
short as possible.
Proceed with the installation

2. Attach the supply and return air ducts to the unit.
3. Insulate any ductwork outside of the structure with at least 2
inches of insulation and weatherproof. There must be a weatherproof seal where the duct enters the structure.

as follows:

4. Complete the installation according to the instructions
following sections of this manual.

1. Place the unit on the pad and the five (5) rubber isolators
provided.

TYPICAL

GROUND

in the

LEVEL APPLICATION

(YCP024=060F

MODELS)

OUTDOOR
AIR
DISCHARGE

SIDING I
OUTDOOR
INTAKE

AIR

FLUE

HOOD

SUPPORT
PAD
FOUNDATION
EXTERIOR
WALL

INSULATE
WEATHERPROOF
OR RAIN SHIELD

FLEXIBLE
DUCT
CONNECTORS

ISOLATORS
(1 PER CORNER
AND 1 UNDER
UNIT CONTROL

CONDENSATE
A 3/4-inch female NPT condensate drain connection is provided on
the evaporator access panel end of the unit. See Figure 4. Provide
a trap and fill it with water before starting the unit to avoid air from
being drawn through. Follow local codes and standard piping
practices when running the drain line. Pitch the line downward away
from the unit. Avoid long horizontal runs. See Figure 12.

BOX)

DRAIN PiPiNG
(_

TYPICAL

CONDENSATE

DRAIN PiPiNG

3/4" PVC OR COPPER

NOTE:
Do not use reducing fittings in the drain lines. The
condensate drain must be:
•

Made of 3/4" pipe size.

•

Pitched 1/4" per foot to provide free drainage to convenient drain
system.

•

Trapped.

• Must not be connected to closed drain system.
Dwg. No. X664209 P01

Page 1

DUCTWORK
ATTACHING

DOWNFLOW

DUCTWORKTO

ROOF CURB

Supply and return air flanges are provided on the roof curb for easy
duct installation. All ductwork must be run and attached to the curb
before the unit is set into place.

ATTACHING

HORIZONTAL

DUCTWORK

TO UNIT

All conditioned air ductwork should be insulated to minimize heating
and cooling duct losses. Use a minimum of two (2) inches of
insulation with a vapor barrier. The outside ductwork must be
weatherproofed between the unit and the building.

Follow these guidelines for ductwork construction:
Connections to the unit should be made with three-inch
connectors to minimize noise and vibration transmission.

canvas

Elbows with turning vanes or splitters are recommended
mize air noise and resistance.

to mini-

When attaching ductwork to a horizontal unit, provide a flexible
watertight connection to prevent noise transmission from the unit to
the ducts. The flexible connection must be indoors and made out
of heavy canvas.

NOTE: Do not draw the canvas taut between the solid ducts, i
The first elbow in the ductwork leaving the unit should be no closer
than two feet from the unit, to minimize noise and resistance.
AIR PROOF
THIS SEAM
_UNIT
BASE

EXTERIOR

/ II

ooc,\

WEATHERPROOF

lb.. F,ELD
jc";S
SEAM

FLANGE

AIR PROOF
THIS SEAM

T EXTERIOR

UNIT BASE

FLANGE

FIELD DUCT
II
lk
/

AIR PROOF

J_ _

THIS SEAM

FIELDDucT
_J_'_

UNIT DUCT FLANGE
WEATHERPROOF

THIS SEAM
FIELD DUCT

_ITBASE
L_

UNIT DUCT

FLANGE

UNIT BASE

UNIT DUCT
FLANGE
WITH BUTYL
SILICONE

NOT RECOMMENDED

FIELD

DUCT

HORIZONTAL
DOWNFLOW
The following

warning

complies

with State of California

LWARNING:

law, Proposition

This product

65.

contains

fiberglass wool insulation! Fiberglass dust and ceramic
fibers are believed by the State of California to cause
cancer through inhalation. Glasswool fibers may also
cause respiratory, skin, or eye irritation.
PRECAUTIONARY

MEASURES

• Wash clothes separately from other clothing: rinse
washer thoroughly.
Operations such as sawing, blowing, tear-out, and
spraying may generate fiber concentrations requiring
additional respiratory protection. Use the appropriate
NIOSH approved respirator in these situations.
FIRST AID MEASURES

• Avoid breathing fiberglass dust.
•

Eye Contact

Flush eyes with water to remove dust.
If symptoms persist, seek medical
attention.

Skin Contact

Wash affected areas gently with soap
and warm water after handling.

Use a NIOSH approved dust/mist respirator.

• Avoid contact with the skin or eyes. Wear longsleeved, loose-fitting clothing, gloves, and eye
protection.
Page 12

Dwg. No. X664209 P01

GAS PiPiNG iNSTALLATiON
IMPORTANT:
Before making the gas pipe connection give
serious consideration to providing the required clearance nec=
essary
to remove
the access
panels
on the unit
(e.g., economizer and filter access panels).

i supplier
NOTE: for
If this
is sizes
an propane
application, consult your propane
pipe
and deliveries.
GAS PRESSURE

NOTE: In the absence of local codes, the installation
conform with American National Standard--Z223.1--National
Gas Code, Latest Revision.

must I
Fuel I
j

The available gas supply must agree with the required gas supply
marked on the unit nameplate. Minimum permissible gas supply
pressure for purpose of input adjustment must be at least 5.0" W.
C. (inches Water Column) for natural gas and 11' W.C. for propane.
PiPE DELIVERY

SCHEDULE

NOTE:
The following procedure
Natural Gas only.

(NATURAL

WARNING:

PRECAUTIONS

NEVER
USE
ANOPEN
FLAME

TO TEST FOR GAS LEAKS: AN EXPLOSION
OCCUR, CAUSING INJURY OR DEATH.

COULD

IMPORTANT: The furnace and its individual shut-off valve
must be disconnected
from the gas supply piping system
during any pressure testing of that system at test pressures
exceeding 1/2 psig (3.48 kPa).

GAS ONLY)

and tables below apply to i

1.Obtain from the gas company the heating value and specific
gravity of the gas delivered.
2.Determine

SET-UP

The furnace must be isolated from the gas supply piping system by
closing its individual manual shut-off valve during any pressure
testing of the gas supply piping system at test pressures less than
or equal to 1/2 psig (3.48 kPa).

GAS SUPPLY LiNE PRESSURE

(ALL FUELS)

Before connecting the unit to the gas supply line, be sure to
determine the gas pressure in the line.

the exact length of pipe needed.

3.Read the BTUH input nameplate on the furnace.
4.Use the multiplier opposite the specific gravity of the gas given in
Table 1 below and insert in the following formula:

TABLE

1
SPECIFIC
GRAVITY
.50
.55
.60
.65

MULTIPIERS TO BE USED
WHEN THE SPECIFIC
GRAVITY OF THE GAS IS
OTHER THAN 0.60

CFH =

MULTIPIER
1.10
1.04
1.00
.962

If the gas supply pressure is excessive (above 13.8 inches water
column or 1/2 psig), install a pressure regulator either at the supply
source or in the branch circuit serving the unit. Once the regulator
is installed, set it to provide a maximum pressure of 13.8" W.C. to
the gas valve for natural gas with a minimum supply pressure of 5.0"
W.C. Maximum supply pressure of 13.8" W.C. to the gas valve for
propane with a minimum pressure of 11.0" W.C.
NOTE: Maximum pressure to the gas valve for natural gas
is 13.8" W.C. Minimum pressure is 5.0" W.C. Maximum
pressure to the gas valve for propane is 13.8"W. C. Minimum
pressure to the gas valve is 11.0" W.C.
If the supply line pressure is below the minimum supply pressure
indicated on the unit nameplate, contact the gas supply company.

Furnace Input in BTUH
Gas Heat Content in BTU/Cu. Ft. X Multiplier

This will give the factor for columns 2 through 6 in Table 2.

Follow these steps to complete the installation of the unit gas piping.
See Figure 14.

&Using Table 2, select the pipe length nearest to yours.
6.Follow this line vertically down to the exact CFH found in Step 4
above or the next highest value.

1. Install a tapped, Style A (1/8-inch NPT tap) shut-off gas cock at
the end of the gas supply line near the unit. Be sure the tapped
gas cock is downstream of the pressure regulator, if used.

7.Read horizontally to the left of this column for the required pipe
size diameter.

TABLE

DEALER INSTALLED
GROUND UNION

1/8" N.P.T.PLUGGED
ACCESS FOR TEST

NATURAL GAS ONLY
TABLE OF CUBIC FEET PER HOUR OF GAS
FOR VARIOUS PIPE SIZES AND LENGTHS

GAUGE CONNECTION
FROM

PIPE
SIZE
(inch)

1/2

132

3/4

278

190

152

130

115

105

520

350

285

245

215

195

180

1050

730

590

520

440

400

1-1/4

I r 8''-_
TO MAIN
CONTROL
VALVE

LENGTH OF PIPE (feet)
GAL_PPLY
F'ELD SUPPLIE'_D DR_

THIS TABLE

IS BASED ON PRESSURE

Dwg. No. X664209 P01

DROP OF 0.3 INCH W.C. AND 0.6 SP.GR.

370

LEG _

UN,T_

GAS VALVE, MUST BE
INSTALLED BY DEALER
OUTSIDE UNIT.

GAS

Page 13

GAS PiPiNG iNSTALLATiON

NOTE: The shut-off gas cock must be installed outside of
the unit and should meet the specifications of all applicable national and local codes.

BURNER

& VALVE

ILLUSTRATION

2. Install a ground union joint downstream of the shut-off cock.
This joint must also be installed outside of the unit.

/
o/

3.Install a drip leg at least six (6) inches in depth next to the
union as shown in Figure 14. This drip leg is required to
collect any sediment that may be deposited in the line.
4.Before connecting the piping circuit to the unit, bleed the air
from the supply line. Then cap or plug the line and test the
pressure at the tapped shut-off cock. The pressure reading
should not exceed 13.8 inches water column.
5.Using an appropriate backup wrench on the gas valve inlet
boss, connect the gas piping to the unit. Check the
completed piping for leaks using a soap and water solution
or the equivalent.
6.After installation of the gas pipe in the unit, the pipe chase
opening should be closed with the filler/barrier plug provided.
MANIFOLD
PRESSURE
Check the manifold pressure at the unit gas valve. Do not
exceed the recommended pressure shown on the unit nameplate.

DETAIL

"A"

FLUE AND HOOD ILLUSTRATION
OUTLET
FLUE
RESTRICTOR
FLUE
DUCT
GASKET

TOP

ACCESS

PANEl

(SEE NOTES)

DUCT

NOTES:
1 .THE OUTLET FLUE RESTRICTOR IS REQUIRED
WHEN THE FURNACE IS OPERATED ON LOW INPUT
(AN OUTLET FLUE RESTRICTOR MAY BE REQUIRED
ON HIGH INPUT).
TO INSTALL THE OUTLET FLUE RESTRICTOR,
REMOVE THE TOP ACCESS PANEL AND FIT THE
OUTLET FLUE RESTRICTOR OVER THE OUTLET OF
THE FLUE DUCT. REASSEMBLE THE TOP ACCESS
PANEL ONTO UNIT.

INLET

HOOD_

GASKET

C665474

Page 14

REV.

Dwg. No. X664209

P01

FIRING RATE SELECTION
All units are capable of firing at a tow or high rate. Check the unit
name-plate, to verify the firing rate of the unit as shipped from the
factory.
If the other input rate is desired, the conversion is made as follows:

b. Remove the slot screw on top of the gas valve for 1st stage
manifold pressure adjustment.
c. Turn the adjustment nut IN to increase the gas flow rate, and
OUT to decrease the gas flow rate using a 3/32" hex wrench.

1. Be sure the unit disconnect is open.
2. Be sure the gas valve is closed.

TABLE

3. Remove furnace access panel.
4. Remove the presently installed gas orifices and replace with
the new gas orifices from the tow fire kit. The orifices should extend
1/4 inch out of the manifold for burner support.

GAS FLOW IN CUBIC FEET PER HOUR
2 CUBIC FOOT DIAL
Sec.
Flow
Sec.
Flow
29
248
50
144
30
240
51
141
31
232
52
138
32
225
53
136

Sec.
8
9
10
11

Flow
900
800
720
655

6. Reinstall the furnace access panel.

600

218

7. Open the gas valve.

13
14
15

555
514
480

34
35
36

212
206
200

16
17
18

450
424
400

37
38
39

19
20

379
360

21
22
23
24
25
26
27
28

343
327
313
300
288
277
267
257

5. For tow fire operation an OUTLET FLUE RESTRICTOR
(packed in the tow fire kit) must be installed (see Figure 16 on page
14). For high fire operation on a few models a different OUTLET
FLUE RESTRICTOR may have been required.

8. Close the unit disconnect.
9. Follow the heating cycle instructions to test unit's function.
10. Mark an "X" below the new input column on unit nameplate.
Attach conversion

label to the unit below the nameplate.

NOTE: Do not convert to high fire when the units are applied above
2000 feet above seal level.
INPUT CHECK AND ADJUSTMENT
1. Make sure all gas appliances are off except the furnace.
2. Clock the gas meter with the furnace operating (determine the
dial rating of the meter) for one revolution.

Sec.
82
84
86
88

Flow
88
86
84
82

133

55
56
57

131
129
126

92
94
96

78
76
75

195
189
185

58
59
60

124
122
120

98
100
104

73
72
69

40
41

180
176

62
64

116
112

108
112

67
64

42
43
44
45
46
47
48
49

172
167
164
160
157
153
150
147

66
68
70
72
74
76
78
80

109
106
103
100
97
95
92
90

116
120
124
128
132
136
140
144

62
60
58
56
54
53
51
50

3. Match the "Sec" column in the gas flow (in cfh) Table 3 with the
time clocked.

HIGH ALTITUDE INSTALLATION
4. Read the "Flow" column opposite
clocked.

the number of seconds

5. Use the following factors if necessary_.
For 1 Cu. Ft. Dial Gas Flow CFH =
Chart Flow Reading / 2
For 1/2 Cu Ft. Dial Gas Flow CFH =
Chart Flow Reading / 4
For 5 Cu. Ft. Dial Gas Flow CFH =
10X Chart Flow Reading / 4
6. Multiply the final figure by the heating value of the gas obtained
from the utility company and compare to the nameplate rating.
This must not exceed the nameplate rating.

Unit nameplate ratings are based on equipment operation from sea
level to 2000 feet elevation above sea level. If the unit installation
is from 2000 - 4500 feet elevation, it will be necessary to change the
burner orifices to the noted sizes, (ref. National Fuel Gas Code, sec
8.1.2, Appendix F, Table F4).

GAS
TYPE

MANIFOLD
PRESSURE

ORIFICE SIZE
0 - 2000 ft

ORIFICE SIZE
2000-4500

3.3

42*

3.3

10.0

{in. W.C. )
NATURAL
( high input )
NATURAL
( low input )
PROPANE

7. Changes can be made by adjusting the manifold pressure.
* FACTORY SHIPPED

a. Attach a manifold pressure gauge.

Dwg. No. X664209 P01

Page 15

FILTER iNSTALLATiON
TABLE

AIR FILTERS
Filters are to be used with the YCP024=060F heating/cooling units.
The basic unit does not have filters in it. However, a filter frame
accessory is offered that will allow filters to be installed within the
unit.

UNIT

NOMINAL
CFM

FILTER*
Sq.Ft.- SIZE

FILTER
RESISTANCE

YC~018F/G

600

ZOO

0.05

Otherwise a filter rack must be installed by the installer in the duct
work,

YC~024F/G

800

2.67

0.05

YC~030F/G

1000

3.33

0.05

Affix the filter label supplied with the unit adjacent to the filter area.

YC~036F/G

1200

0.05

YC~042F/G

1400

4.67

0.05

YC~048F/G

1600

5.33

0.05

YC~060F/G

2000

6.67

0.05

*Filters must be installed in the return air system. The above square
footages are based on 300 F.PM. face velocity. If permanent filters are
used, size per mfg. recommendation
with clear resistance of 0.05" WC.

ELECTRICAL
ELECTRICAL

CONNECTIONS

Electrical wiring and grounding must be installed in accordance with
local codes or, in the absence of local codes, with the National
Electrical Code ANSI/NFPA 70, Latest Revision.

ELECTRICAL

WIRING

NOTE: Unit must be grounded for ignitor to operate properly. Gas pipe to unit is not an adequate ground. Ground
the unit internally as provided.
See wiring diagram for
location.

POWER

It is important that proper electrical power be available for the unit.
Voltage variation should remain within the limits stamped on the unit
nameplate.

DISCONNECT SWITCH
Provide an approved weatherproof disconnect either on the side of
the unit or within close proximity and within sight of the unit.

COMPRESSOR

MOTOR

ROTATION

DISCONNECT ALL POWERTO COMPRESSORWHEN
COMPRESSOR MOTOR ROTATION IS REVERSED. CHANGE
ANYTWO CUSTOMER POWER LEADS TO CORRECT ROTATION
Failure to change customer power leads to correct compressor
rotation may result in compressor
damage during operation.

OVER CURRENTPROTECTION

CONTROL WIRING (CLASS II)

The branch circuit feeding the unit must be protected as shown on
the unit rating plate.

Low voltage control wiring should not be run in conduit with power
wiring unless Class 1 wire of proper voltage rating is used. Route
the thermostat cable or equivalent single leads of No. 18 AWG
colored wire from the thermostat subbase terminals through the
rubber gromment on the unit. See Figures 3 and 4 for the control
entry location.
Make connections as shown on the unit wiring
diagram and in Figure 18.

POWER WIRING
The power supply lines must be run in weathertight conduit to the
disconnect and into the bottom of the unit control box. Provide strain
relief for all conduit with suitable connectors.
Provide flexible conduit supports whenever vibration transmission
may cause a noise problem within the building structure.
Be sure all connections

are made tight. See Figure 18.

NOTES: For branch circuit wiring (main power supply to unit
disconnect), wire size forthe length of run should be determined
using the circuit ampacity found on the unit nameplate and the
N.E.C.
For
N_

more than 3 conductors in a raceway or cable, see the
acit of each conductor.

GROUNDING: THE UNITMUST BE ELECTRICALLYGROUNDED
IN ACCORDANCE WITH LOCAL CODES OR THE NATIONAL
ELECTRIC CODE.

Page 16

Do not short thermostat
transformer.

wires since this wilt damage the control

Recommended wire sizes and lengths for installing the unit thermostat are provided in Table 5. The total resistance of these low
voltage wires must not exceed one (1) ohm. Any resistance in
excess of 1 ohm may cause the control to malfunction because of
the excessive voltage drop.

TABLE

THERMOSTAT

WIRE SIZE AND MAXIMUM LENGTH

WIRE SIZE
18
16
14

MAXIMUM LENTGH (Ft)
75
125
200
Dwg. No. X664209 P01

ELECTRICAL

YCP-F

FIELD

WIRING

WiRiNG

A }'KA',
LN

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DIAGRAM

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6 < 3i

)

R }

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I
I
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Q
'tl

'IL
U_,

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(

COMMON

7A{BK}

(;

FAN

44 A { Y L

COM'RE

4 1 A { EiF_}

ss,,,R>,, R
T/_O

SSOIR

2'/

AREA

k l RE
GROUND
POW;

IOWF

LNi

EOOINO, I'.,'I}ZER
(}(}NNi(};

o
NOIFS:

_(}(}[olv'

FJ,CTORY

USI
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OF:
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CONN'0
iP!,,"
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Skk

lIE

POWER
NAY

SUPPLY

TAOE

JNIT

SIZE,
COUP

PO,_.'
Y Wl

i_ WII_iNC
T i COD

ACRFES

WITH

AN["

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[ EC,

,,_ r_ES

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EQUi©MENT

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HEAT ANTICIPATOR

The thermostat heat anticipators should be set to .4 amps on single
or two stage thermostats.
IMPORTANT:
Upon completion
of wiring check all electrical
connections, including factory wiring within the unit, make
sure all connections are tight. Replace and secure all electrical box
covers and access doors before leaving the unit or turning on the
power to the unit.

Dwg. No. X664209 P01

After all electrical wiring is complete, set the thermostat
system
switch in the OFF position so that the compressor will not run
and then apply power by closing the system main disconnect
switch. This will activate the compressor sump heat. Do not change
the Thermostat System Switch until power has been applied long
enough to evaporate any liquid R-22 in the compressor.
It is
recommended that the sump heater be energized for eight (8) hours
prior to starting.

Page 17

START - UP
PRE-START QUICK CHECKLIST
Is the unit properly located and level with the proper clearance?
See Figure 4.
Is the duct work correctly sized, run, taped, insulated, and
weatherproofed with proper unit arrangement?
See Ductwork
Installation section.

NOTE: Do not use the pressures from the unff's SERVICE FACTS
to determine the unit refrigerant charge. The correct charge is
shown on the unit nameplate. To charge the system accurately,
weigh in the charge according to the unit nameplate.

VOLTAGE
With the compressor operating, check the line voltage at the unit.
The voltage should be within the range shown on the unit nameplate. If tow voltage is encountered, check the size and length of the
supply line from the main disconnect to the unit. The line may be
undersized for the length of the run.

•

Is the gas piping correctly sized, run, trapped, and purged d air?
See Gas Piping section.

•

Is the condensate line properly sized, run, trapped, and pitched?

•

Isthe fitterofthe correct size and number? Is it clean and in place?

•

Is the wiring properly sized and run according to the unit wiring
diagram?

Place the system selector in the OFF position or reset thermostat at
a setting above room temperature.

•

Are all the wiring connections,

•

Has the unit been properly grounded and fused with the recommended fuse size? See Wiring Data.

Do not de-energize the main power disconnect except when unit is
to be serviced. Power is required to keep the heat pump compressor warm and boil off refrigerant in the compressor.

•

Is the thermostat level, correctly wired, welt located, and set for
the proper heat anticipation?

including those in the unit, tight?

•

Have the air conditioning systems been checked at the service
ports for charge and leak tested if necessary?

•

Does the condenser fan and indoor blower turn free without
rubbing, and are they tight on the shafts?

•

Has the indoor blower speed been determined and the proper
speed been set? See the Unit Wiring Diagram.

•

Has all work been done in accordance with applicable local and
national codes?

•

Are all covers and access panels in place to prevent air loss and
safety hazards?

COOLING SHUT DOWN

HEATING CYCLE
NOTE: See Sequence of Heating Operation.
These units are equipped with a solid-state ignition control that
lights the burners each time the thermostat calls for heat. The
burners are extinguished during the OFF cycle.
The gas heating section of the unit can be started using the following
procedure:
1,

a. Turn the main shutoff valve on the gas supply line ON.
b. Turn or switch the manual valve on the combination
valve ON position.
2,

STARTING THE UNIT iN THE COOLING MODE

b. Turn the thermostat
cycle.
3,

access panel is in place.

blower is energized.

b. The pressure switch is closed.
c. The gas valve opens and the ignitor lights the burner.
d. Cycle the thermostat on and off a few times to check out the
control system and burner operation characteristics.
4,

With the burners operating, check the manifold pressure with a
manometer. Do not exceed recommended pressures.

Adjust the unit to obtain an air temperature
specified on the unit nameplate.

NOTE: For manifold pressures and orifice sizes for gas with
other BTU ratings, contact the local gas utility.
Manifold
pressure should be 3.5 inches water column (+0.1). Input must
not exceed the value shown on the rating plate.

Set the heat anticipator of the thermostat to equal the amperage
draw of the gas valve, approximately 0.7.

OPERATING PRESSURES
After the unit has operated in the cooling mode for a short period of
time, install pressure gauges on the gauge ports of the discharge
and suction line valves. Check the suction and discharge pressures
and compare them to the normal operating pressures provided in
the unit's SERWCE FACTS.

to the highest setting in the heating

As the thermostat calls for heat, the system cycles as follows:
a. The combustion

for a

To start the unit in the cooling mode, set the thermostat system
switch to COOL and move the thermostat COOL indicator to a
setting below room temperature.
The condenser (outdoor) fan
motor compressor and evaporator (indoor) fan motor will operate
automatically.

Page 18

Be sure the burner compartment

gas

a. Turn on the electrical power to the unit.

CAUTION: Before starting the system on the cooling cycle, turn the
thermostat switch to OFF and close the unit disconnect switch. This
procedure energizes the compressor crankcase heater, vaporizing
any liquid refrigerant in the crankcase. This is a precaution against
foaming at startup which could damage the compressor bearings.
Allow the heater to operate a minimum of eight (8) hours.
NOTE:
See the section on "Sequence of Operation"
description of the cooling operating sequence.

Be sure the thermostat is at its lowest setting and the power to
the unit is off.

rise with that

Dwg. No. X664209 P01

START - UP
8. Set the thermostat at the desired temperature setting and the
unit will function automatically.

6. Cycle the thermostat OFF and ON a few times at a rate of not
more than once every thirty (30) seconds. Check both the
control operation and the burner operating conditions.

STARTING THE UNIT IN THE GAS HEATING MODE

MANIFOLD PRESSURE
1. Check to make sure all grilles and registers are open and all unit
access doors are closed before start-up.
2. Purge the gas supply line of air by opening the union ahead of
the unit. When the odor of gas is detected, retighten the union
and wait five (5) minutes before proceeding.

Connect a manometer to the pressure tap at the outlet side of
the unit's gas valve. Read the manifold pressure with the main
burners firing.

If the manifold pressure reading does not match the value
indicated on the unit nameplate, the unit pressure regulator
must be adjusted as follows:

3. Set the walt thermostat to its lowest position and place the fan
switch in the AUTO or ON position.

a. Remove the cover screw on the gas regulator located on the
front side of the unit's gas valve.

4. Open the main gas valve(s) and turn on the unit power supply.

b. Turn the adjusting screw clockwise to increase manifold
pressure or counterclockwise to decrease manifold pressure.

5. Reset the heating temperature lever on the room thermostat at
the highest value above room temperature. The combustion
blower motor should energize. The main burners should light
within 20-25 seconds. Initial start may be delayed somewhat if
the unit has not been purged and air is trapped in the gas line.

3. Check the temperature rise during furnace operation to insure
that it falls within the range specified on the unit nameplate.

NOTE: Blue smoke produced by the heat exchanger during the
initial burner firing is caused by a thin film of off on the surface
of the heat exchanger. This off will burn off quickly.

4. If the temperature rise noted is outside of the specified limits,
adjust the indoor air flow to cause the temperature rise d the
heat exchanger to fall within the required range.

IGN LED DIAGNOSTIC INDICATOR
FLASHING

SLOW

CONTINUOUS

OFF

NORMAL

CHECK

POWER/INTERNAL

SYSTEM

3 FLASHES

HIGH
FLAME

6 FLASHES

FLAME

ROLLOUT

INSTALLATION

Does the unit run and operate as described in the section on
"Sequence of Operation" in response to the room thermostat?

•

Are the condenserfan and indoor blower operating correctlywith
proper rotation and without undue noise?

•

Is the compressor operating correctly and has the system been
checked with a charging chart?
Has the voltage and running current been checked to determine
if it is within limits?
Has the thermostat been checked for calibration and the air
discharge grilles adjusted to balance the system?

Dwg. No. X664209 P01

LIMIT

FAILURE

( NO FLAME

)

PROBLEM

(TCO) OPEN

WITH

GAS VALVE

SWITCH

OFF

(FL) OPEN

W1 & W2 SWAPPED

•

SWITCH

SENSED

7 FLASHES

•

LOCKOUT

PRESSURE

4 FLASHES

FINAL

FOR HEAT

NORMAL

2 FLASHES

5 FLASHES

CALL

CHECKLIST

•

Has the ductwork been checked for air leaks and condensation?

•

Has the furnace manifold pressure been checked and adjusted
if necessary?

•

Has the heating air temperature rise been checked?

•

Has the unit been checked for tubing and sheet metal rattles?
Are there any other unusual noises to be checked?

•

Are all covers and panels in place and properly fastened?

•

Has the owneror maintenance personnel been given this manual
and the warranty?
Has the owner or maintenance been instructed on proper operation and maintenance of this unit?

Page 19

SEQUENCE OF OPERATION
The setting of the system switch on the room
thermostat controls the operation of the unit heating or cooling cycles. Once the system switch is
placed either in the "HEAT" or "COOL" position,
unit operation is automatic. A fan switch on the
thermostat also provides for continuous operation
of the evaporator fan when desired. The fan switch
"ON" position provides continuous operation while
the "AUTO" position provides operation during the
heating or cooling cycles.
HEATING

CYCLE

On a call for heat by the room thermostat, the
control module (IGN) runs its self-check routine.
After the control has verified that the pressure
switch (PS) contacts are open, the limit switch
(TCO) contacts are closed, and the flame rollout
(FL) switch is closed, the combustion fan motor
(CFM) will be energized.
As the combustion fan motor (CFM) comes up to
speed, the pressure switch (PS) contacts will close.
After approximately
20 seconds, for the combustion fan motor (CFM) prepurge, the gas valve (GV)
is energized permitting gas flow to the burners.
Concurrently,
the spark ignitor (IP) is energized.
The flame detector (FD) confirms that ignition has
been achieved within the seven second trial period.
Upon proof of ignition, the delay to indoor fan on
period begins timing and after approximately
45
seconds, the indoor blower motor (IDM) will be
energized and will continue to run during the heating cycle.
When the thermostat is satisfied, the gas valve
(GV) will close and the flame will extinguish. The
combustion fan motor (CFM) will continue to run for
a postpurge period of approximately
5 seconds
then will be de-energized. The indoor blower motor
(IDM) will continue to run for the fan off period (field
selectable 60 or 90 seconds (by jumpers), then will
be de-energized by the control module.
SAFETY

SEQUENCES

AND LIMIT CONTROLS

During the main burner operation, if gas is interrupted or discontinued,
the gas valve (GV) is deenergized instantly. The ignition control module
(IGN) then enters the retry mode. The retry mode
allows the control (IGN) to purge for 60 seconds.

Page 20

Following this time period the valve is energized
and the spark is started. If the flame is not sensed
by the flame detector (FD) within 7 seconds the
valve is de-energized
and the spark is stopped.
A second retry is then attempted. If this attempt at
ignition is unsuccessful,
a third retry will be attempted after a prepurge period. If this third attempt at ignition is unsuccessful,
the control will
lock out. It can be reset by removing power to the
unit or by turning the thermostat from "on" to "off" for
approximately three seconds, then back "on 2 If not
reset, the control module will automatically reset in
1 hour.
The temperature limit switch (TCO) protects against
overheating if the indoor motor (IDM) fails to operate. Also, a fusible link (FS) protects against flame
rollout due to flue blockage. These switches will
interrupt the operation of the unit by de-energizing
the ignition control module (IGM) if overheating
OGCU rs.

The temperature limit switch (TCO) is located in the
gas compartment.
This automatic reset device
protects against excessive
leaving air temperature.
The fusible link (FS) is located in the gas compartment near the burners. This is a single use device
designed to protect against any form of flame
rollout.
COOLING

CYCLE

With the room thermostat
system switch in the
"COOLING"
position and the fan switch in the
"AUTO" position, the compressor contactor (CC)
and the indoor fan relay (F) are energized.
The energized compressor contactor (CC) completes the circuit to the compressor (CPR) and a
secondary circuit to the outdoor fan motor (ODM).
If the compressor safety controls are closed, the
compressor (CPR) will operate with the outdoor fan
motor (ODM). The indoor fan motor (IDM) will
operate. The thermostat will continue to cycle the
compressor and fans to maintain the desired temperature.
With the thermostat fan switch in the "ON" position, the indoor fan motor (IDM) will continue to
run regardless of compressor and condenser fan
operation.
Dwg. No. X664209 P01

PROCEDURE

CHECKOUT

TROUBLESHOOTING

CHART

\
\
\

\
\

SYSTEM
REFRIGERANT

FAULTS
CIRCUIT

Liquid Pressure Too high

Liquid Pressure Too Low

Suction Pressure Too High

Suction Pressure Too Low

P
P

S P

Liquid Refrigerant floodback (TXV System)
Liquid Refrig. floodback (Cap. Tube System)
I. D. Coil Frosting
Compressor

Runs Inadequate or No Cooling

ELECTRICAL
Compressor

& O.D. fan Do Not Start

Compressor

Will Not Start But O.D. Fan Runs

P
P

S
S

P
g

O.D. Fan Won't Start

Compressor

Hums But Wilt Not Start

Compressor

Cycles on IOL

I.D. Blower Won't Start
P-PRIMARY

CAUSES

Dwg. No. X664209 P01

P
S-SECONDARY

CAUSES

P
X664590

Page 21

MAINTENANCE
ROUTINE MAINTENANCE BY OWNER
You can do some of the periodic maintenance functions for your
YCX-G unit yourself; this includes replacing the disposable or
cleaning the permanent air filters, cleaning the unit cabinet,
cleaning the condenser coil, and conducting
a general unit
inspection on a regular basis.

•

Visually inspect the unit to ensure that the airflow required for
combustion and condenser coil is not obstructed from the unit.

•

Inspect the control panel wiring to verify that all electrical
connections are tight and that the wire insulation is intact.

•

Check the operation of the gas ignition system as follows:
Turn off the gas supply with the unit operating to verify that the
gas valve closes and that a reignition cycle is initiated by the
unit.
Visually inspect the inside of the burners and the burner ports
for deposit buildup and corrosion. Wipe and brush the inside
of the burner and the burner ports and then clean with a dry
cloth. If the deposit buildup or corrosion is excessive, replace
the burners.

When the system is in constant
operation.
In new homes,
check the filters every week for the first four (4) weeks.
If you have disposable-type
filters, replace them with new filters
of the same type and size. Do not attempt to clean disposable
filters.
Permanent-type
filters can be cleaned by washing them with a
mild detergent and water. Make sure that the filters are thoroughly dry before reinstalling them in the unit (or duct system).
NOTE:
It may be necessary to replace permanent filters
annually if washing fails to clean the filter or if the filter shows
signs of deterioration.
Be sure to use the same type and size
as was originally instafled.

CONDENSERCOIL
Unfiltered air circulates through the unit's condenser coil and can
cause the coil's surface to become clogged with dust, dirt, etc.
To clean the coil, vertically (i.e., with the fins) stroke the coil
surface with a soft-bristled brush.
Be sure to keep all vegetation
area.

,WARNING:

away from the condenser

coil

TO PREVENT

MAINTENANCE
PERFORMED
COOLING SEASON

AN EXPLOSION

BY SERVICEMAN--

•

filters (for cleaning

•

motors and drive system components

•

economizer

•

safety controls (for mechanical

•

electrical components and wiring (for possible
and connection tightness)

•

condensate

or replacement)

•

unit duct connections (to see that they are physically
and sealed to the unit casing)
unit mounting

the unit (for obvious

support

(for possible

2. Remove the flue cap, the lower access panel, and the upper
access panel.
3. Remove the combustion blower assembly from the fluebox.
Remove the flue box and the flue restrictors.
4. Remove all wires from the gas value while carefully
their location.

cleaning)
replacement

(for structural

noting

the gas supply line from the valve.

6. Remove the manifold retaining screws and pull the burnermanifold assembly from the heat exchanger.
7. Remove the inlet turbulators
damage them.

being careful not to break or

8. Wipe the flue box and flue baffles clean with a clean, dry
cloth.

10. Replace

all gaskets with new ones.

11. Replace

all damaged

cleaning

or broken turbulators

fluids

with new ones.

12. Reassemble the unit by reversing Steps 2 through 7 above.
Take care that all gaskets seat properly.

14. Leak test all gas line connections
solution or the equivalent.

replacement)

15. Reinstall
stack.

by referring

to the

with a soap and water

the top and bottom access

panels

and the flue

16. Visually inspect the unit to ensure that the airflow opening for
combustion is not obstructed.
sound

17. Follow the start-up procedure above to place the unit back in
service.

integrity)

unit deterioration)

MAINTENANCE
PERFORMED
HEATING SEASON

BY SERVICEMAN--

Complete the unit inspections and service routines described
below at the beginning of each heating season.

Page 22

1. Turn the room thermostat to the OFF position. Turn the main
power disconnect OFF. Turn the manual gas valve OFF.

13. Check all wires for correct installation
unit's electrical wiring diagram.

drain (for cleaning)

•

Before each heating season, the flue should be inspected for
signs of flaking rust and soot deposits. Dirty flues should be
cleaned
by qualified
service
personnel
ONLY using the
following procedure:

9. CAUTION:
Never use combustible
any part of the furnace.

To keep your unit operating safely and efficiently, the manufacturer recommends that a qualified serviceman check the entire
system at least once each year and any other time that you feel
one is needed. Your serviceman should examine these areas of
your YCP-F unit:

•

FLUE CLEANING

5. Disconnect

OR POSSIBLE INJURY, DEATH AND EQUIPMENT DAMAGE,
DO NOT STORE COMBUSTIBLE
MATERIALS, GASOLINE
OR OTHER FLAMMABLE VAPORS OR LIQUIDS NEAR THE
UNIT.

gaskets

•

,&WARNING:

DO NOT OPERATE

THE

UNIT

WITHOUT THE EVAPORATOR
FAN ACCESS PANEL IN
PLACE.
REINSTALL
THE
ACCESS
PANEL
AFTER
PERFORMING ANY MAINTENANCE PROCEDURES ON THE
FAN. OPERATING
THE UNIT WITHOUT
THE ACCESS
PANEL PROPERLY INSTALLED MAY RESULT IN SEVERE
PERSONAL INJURY OR DEATH.

Dwg. No. X664209 P01

LIMITED WARRANTY
COMBINATION

GAS ELECTRIC

AIR CONDITIONER

YCC, YCD, YCH, YCP, YHC and YSC
Models Less Than 20 Tons for Residential Use*
(Parts Only)
This limited warranty is extended by American Standard Inc., to the original purchaser and to any
succeeding owner of the real property to which the Combination Gas Electric Air Conditioner is
originally affixed, and applies to products purchased and retained for use within the U.S.A. and
Canada.
If any part of your Combination Gas ElectricAir Conditioner fails because of a manufacturing
defect
within five years from the date of the original purchase, Warrantor will furnish without charge the
required replacement part. Any local transportation,
related service labor, diagnosis calls, air filters,
refrigerant and related items are not included.
If the sealed motor-compressor
fails or if the outdoor coil should become defective, either or both
events occurring because of a manufacturing defect within five years from the date of original
purchase, Warrantor will furnish without charge the required replacement compressor and/or outdoor
coil. Any local transportation,
related service labor, diagnosis calls, refrigerant and related items are
not included.
In addition, if the steel heat exchanger fails because of a manufacturing
defect within the sixth through
tenth year from the date of original purchase, Warrantor will furnish without charge a replacement
heat exchanger. Any local transportation,
related service labor and diagnosis calls are not included.
This limited warranty does not cover failure of your combination
gas electric air conditioner if it is
damaged while in your possession, damage caused by unreasonable use of the combination
gas
electric air conditioner and/or damage from failure to properly maintain
the combination gas
electric air conditioner as set forth in the Use and Care manual (see Proper Maintenance
section).
This limited warranty applies to product installed on or after 10/'1/2001 where product is manufactured
after 1/1/2000.This limited warranty is not retroactive to any installations prior to 10/1/2001 or on
product produced prior to 2000.
THE LIMITED WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER
WARRANTIES AND LIABILITIES, WHETHER IN CONTRACT OR IN NEGLIGENCE,
EXPRESS
OR IMPLIED, IN LAW OR IN FACT, INCLUDING
IMPLIED WARRANTIES
OF
MERCHANTABILITY
AND FITNESS FOR PARTICULAR USE, AND IN NO EVENT SHALL
WARRANTOR
BE LIABLE FOR ANY INCIDENTAL
OR CONSEQUENTIAL
DAMAGES.
Some states do not allow limitations on how long an implied limited warranty lasts or do not allow
the exclusion or limitation of incidental or consequential damages, so the above limitation or
exclusion may not apply to you.This limited warranty gives you specific legal rights, and you may
also have other rights which vary from state to state.
Parts will be provided by our factory organization through an authorized service organization in your
area listed in the yellow pages. If you wish further help or information concerning this limited
warranty, contact:
American Standard Inc.
Troup Highway
Tyler, TX 75711-9010
Attention: Manager, After Sales Support
Dwg. No. X664209 P01

GW-632-1802

Page 23

LIMITED WARRANTY
COMBINATION
GAS ELECTRIC AIR CONDITIONER
YCZ, YCY, YCX, YCC, YCD, YCH, YCP, YHC and YSC
Models Less Than 20 Tons for Commercial Use*
(Parts Only)
This warranty is extended by American Standard Inc., to the original purchaser and to any succeeding owner
of the real property to which the Combination Gas Electric Air Conditioner is originally affixed, and applies to
products purchased and retained for use within the U.S.A. and Canada. There is no warranty against
corrosion, erosion or deterioration.
If any part of your Combination Gas Electric Air Conditioner fails because of a manufacturing defect within one
year from the date of the original purchase, Warrantor will furnish without charge the required replacement
part.
In addition, if the sealed motor-compressor fails because of a manufacturing defect within the second through
fifth year from the date of original purchase, Warrantor will furnish without charge the required replacement
compressor.
In addition, if the steel heat exchanger fails because of a manufacturing defect within the second through fifth
year from the date of original purchase, Warrantor will furnish without charge a replacement heat exchanger.
Warrantor's obligations and liabilities under this warranty are limited to furnishing F.O.B. Warrantor factory or
warehouse at Warrantor designated shipping point, freight allowed to Buyer's city, replacement parts for
Warrantor's products covered under this warranty. Warrantor shall not be obligated to pay for the cost of lost
refrigerant. No liability shall attach to Warrantor until products have been paid for and then liability shall be
limited solely to the purchase price of the equipment under warranty shown to be defective.
THE WARRANTY
AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER
WARRANTIES
AND LIABILITIES,
WHETHER IN CONTRACT OR IN NEGLIGENCE,
EXPRESS
OR IMPLIED, IN LAW OR IN FACT, INCLUDING
IMPLIED WARRANTIES
OF
MERCHANTABILITY
AND FITNESS FOR PARTICULAR
USE, AND IN NO EVENT SHALL
WARRANTOR
BE LIABLE FOR ANY INCIDENTAL
OR CONSEQUENTIAL
DAMAGES,
Some states do not allow limitations on how long an implied warranty lasts or do not allow the exclusion or
limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
American Standard Inc.
Troup Highway
Tyler, TX 75711=9010
Attention: Manager, After Sales Support
GW-606-4800
* This warranty is for commercial usage of said equipment and not applicable when the equipment is used for
a residential application. Commercial use is any application where the end purchaser uses the product for
other than personal, family or household purposes.

American

Standard

6200 Troup Highway
Tyler, TX 75703

inc.

Since American -Standard has a policy of continuous
product and product data improvement, it reserves the
right to change design and specification without notice.

Technical Literature - Printed in U.S.A.

Page 24

Dwg. No. X664209 P01

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TRANE Package Units(both Units Combined) Manual L0904646

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