Amana PGB58B, PGC(24-60)B User Manual

®

Heating ¡ Air Conditioning

A higher standard of comfort

MODELS

PGC(24-60)B and

PGB58B

Table of Contents

I. Unit Specifications ........................................ 2

II. Safety Information ......................................... 6

III. General Information ...................................... 7

IV. Rigging and Handling ................................... 9

V. Gas Piping .................................................... 10

Vl. Electrical Wiring .......................................... 12

Vll. Circulating Air and Filters .......................... 13

VIII. Flue Vent ....................................................... 16

IX. Condensate Drain ........................................ 16

X. Heating Sequence of Operations............... 18

XI. Cooling Sequence of Operations .............. 18

XIl. Startup and Adjustment .............................. 18

XIII. Maintenance................................................. 24

XIV. Accessories and Functional Parts ............ 26

XV. Typical Cooling Performance Data ............ 27

XVI. Wiring Diagram ............................................ 29

Gas-Electric Package

Unit

Cooling and Heating

Installation Instructions

RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION

ATTENTION INSTALLING PERSONNEL

As a professional installer you have an obligation to
know the product better than the customer. This in­cludes all safety precautions and related items.

Prior to actual installation, thoroughly familiarize your­self with this Instruction Manual. Pay special atten­tion to all safety warnings. Often during installation or
repair it is possible to place yourself in a position which
is more hazardous than when the unit is in operation.

Affix These Installation Instructions Adjacent To The Appliance.

Remember, it is your responsibility to install the
product safely and to know it well enough to be able
to instruct a customer in its safe use.

Safety is a matter of common sense...a matter of think­ing before acting. Most dealers have a list of specific
good safety practices...follow them.

The precautions listed in this Installation Manual
should not supersede existing practices but should
be considered as supplemental information.

Amana

May 1998 (2) 11073904

Fayetteville, TN 37334

I. Unit Specifications

MODEL PGC24B0452A PGC24B0702A PGC30B0702A PGC36B0702A PGC36B09 02A
Cooling Cap acity Btuh 24,000 24,000 30,000 36,000 36,000
SEER 12.50 12.50 12.30 12.00 12.00
Heating

Input Btuh 45,000 70,000 70,000 70,000 90,000

Output Btuh 35,000 55,000 55,000 55,000 70,000

AFUE 80.9 80.1 80.1 80.1 80.4

Temperature Rise °F 20-50 30-60 30- 60 30-60 40-70

Number of Burn er s 2 3 3 3 4

Compressor

R.L. Amps 12.9 12.9 15 20 20
L.R. Amps 62.5 62.5 76 90.5 90.5

Condenser Coil

Face Area (sq. ft.) 12.3 12.3 12.3 14 14

Rows Deep 1 1/2 1 1/2 2 2 2

Fins/Inch 13 13 13 13 13

Condenser Fan

Diameter (in.) 20 20 20 20 20

CFM 2670 2670 2700 3060 3060

Condenser Fan Motor

Horsepower 1/8 1/8 1/4 1/4 1/4

R.L. Amps 0.8 0.8 1.2 1.5 1.5
L.R. Amps 1.5 1.5 3 3.4 3.4

Blower M o to r

Horsepower 0.5 0.5 0.5 0.5 0. 5

R.L. Amps 4.3 4.3 4.3 4.3 4.3
L.R. Amps Protected by redundant electronic control circuits

Blower Wh eel Dia. x Width (in .) 10x7 10x7 10x7 10x7 10x7

Rated CFM, Cooling 850 850 1100 1300 1300

Max. External 0.8" wc 0.8" wc 0.8" wc 0.8" wc 0.8" wc

Combustion Blower

Diameter x Wi d th (in.) 4 x 1.25 4 x 1.25 4 x 1.25 4 x 1.25 4 x 1.25

No. 11111

Condenser Blower Motor

H.P. 0.03125 0.03125 0.03125 0.031 25 0.03125

F.L. Amps. 0.5 0.5 0.5 0.5 0.5

Press. Switch S ett in g (" W.C.) -0.65 -0.65 -0.65 -0.65 -0.65

Ignition - Lockout Timing (sec.) 4 4 4 4 4

Flame Sense Current (microamps)

Minimum 11111

Maximum 66666

Evaporator Coil

Face Area (Sq. Ft.) 4 4 4 4 4

Rows Deep 22244

Fins/Inch 16 16 16 12 12

External Filter Size (Sq. Ft.) 3.6 3.6 3.6 3.6 3.6

Drain Line Size (in.) 3/4 3/4 3/4 3/4 3/4

Expansion Device (Cooling) Capillary Capillary Capillary Capillary Capillary

Refrigerant Charge Refer to unit nam e p late for correct charg e

Power Supply** 208/230-60-1 208/230-60-1 208/230-60-1 208/230-60-1 208/230-60-1

Min. Circuit Ampacity 21.3 21.3 24.3 30.8 30.8

Max. Overcurre n t Device 30 30 35 45 45

Electrical Entrance Size

Power Supply 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2"

Low Voltage 7/8" 7/8" 7/8" 7/8" 7/8"

Approx. Shipping Weight (lb.) 385 39 4 418 437 443

1) United States Installation

2) Specification subject to change without notice. See sales specification sheets for certain BTUH capacities.

3) This PGC series complies with requirements embodied in the American National Standard ANSI-Z21.47 Central Furnaces.

4) Filters are not supplied with units, but filters must be installed in the unit filter rack or in the return air system.
** While the above data is presented as a guide, it is important to electrically connect the unit and properly size overcurrent protection and wires in accordance with the
National Electrical Code and all existing local codes.
Operating tolerance: Minus 5% on 208 VAC, Plus 10% on 208 VAC and 230 VAC, Minus 10% on 230 VAC

Table 1A

Gas Pack Specifications

2

MODEL PGC42B0902A PGC42B1152A PGC48B0902A PGC48B1152A PGC60B0902A PGC60B1352A
Cooling Capacity Btuh 42,000 42,000 48,000 48,000 60,000 60,000
SEE R 12.20 12.20 12.00 12.00 12.00 12.00
Heating

Compressor

Condenser Coil

Condenser Fan

Condenser Fan Motor

Blow er Mot or

Blower Wheel Dia. x W idth (in.) 10x10 10x10 10x10 10x10 11x8 11x8

Combustion Blower

Condenser Blower Motor

P ress. S wi t ch Setting (" W.C.) -0.65 -0 .65 -0.65 -0.65 -0 .65 -0.65

Ignition - Lockout Timing (sec.) 4 4 4 4 4 4

Flame Sense Current ( microamps)

Evaporator Coil

Electrical Entrance Size

Approx. Shipping Weight (lbs) 521 527 526 526 531 531

Input B tuh 90, 000 115,000 90,000 115,000 90,000 135,000

Output Btuh 72,000 89,000 72,000 89,000 72,000 108,000

AFUE 81.4 79.9 81.4 79.9 81.4 80.5

Temperature Rise °F 25-55 40-70 25-55 40-70 25-55 40-70

Number of Bu rners 4 5 4 5 5 6

R.L. Amps 22 22 21.8 21.8 28.8 28.8
L.R. Amps 107 107 105 105 169 169

Face Area (sq. ft.) 17.2 17.2 17.2 17.2 17.2 17.2

Rows Deep 222222

Fins/Inch 13 13 17 17 17 17

Diameter (in.) 242424242424

CFM 3500 3500 3700 3700 4700 4700

Horsepower 1/4 1/4 1/2 1/2 1/3 1/3

R .L. Amps 1.5 1.5 1.5 1.5 2.5 2.5
L.R. Amps 3.4 3.4 3.6 3.6 6.4 6.4

Horsepower 3/4 3/4 3/4 3/4 1 1

R.L. Amps 555577
L.R. Amps

Rated CFM, Cooling 1450 1450 1700 1700 1750 1750

Max. External 0.8" wc 0.8" wc 0.8" wc 0.8" wc 0.8" wc 0.8" wc

Diameter x Width (in.) 4 x 1.25 4 x 1.25 4 x 1.25 4 x 1.25 4 x 1.25 4 x 1.25

No. 111111

H.P . 0.03125 0.03125 0.03125 0.03125 0.03125 0.03125

F.L. Amps. 0.5 0.5 0.5 0.5 0.5 0.5

Minimum 111111

Maximum 666666

Face Area (Sq. Ft.) 5.7 5.7 5.7 5.7 5.7 5.7

Rows Deep 223333

Fins/Inch 15 15 15 15 15 15

External F ilter Size (Sq. Ft.) 5.3 5.3 5.3 5.3 5.3 5.3

Drain Line Size (in.) 3/4 3/ 4 3/4 3/4 3/4 3/4

Expansion Device (Cooling) Capillary Capillary TEV TEV TEV TEV

Refrigerant Charge Refer to unit name plate for correct charge

Power Supply** 208/230-60-1 208/230-60-1 208/230-60-1 208/230-60-1 208/230-60-1 208/230-60-1

Min. Circuit Ampacity 34 34 39.5 39.5 49.7 49.7

Max. Overcurrent Device 50 50 50 50 70 70

Power Supply 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2"

Low Voltage 7/8" 7/8" 7/8" 7/8" 7/8" 7/8"

Protected by redundant electronic control circuts

1) United States Installation

2) Specification subject to change without notice. See sales specification sheets for certain BTUH capacities.

3) This PGC series complies with requirements embodied in the American National Standard ANSI-Z21.47 Central Furnaces.

4) Filters are not supplied with units, but filters must be installed in the unit filter rack or in the return air system.
** While the above data is presented as a guide, it is important to electrically connect the unit and properly size overcurrent protection and wires in accordance with the
National Electrical Code and all existing local codes.
Operating tolerance: Minus 5% on 208 VAC, Plus 10% on 208 VAC and 230 VAC, Minus 10% on 230 VAC

Table 1B

Gas Pack Specifications

3

MODEL PGB58B0902A PGB58B1152A PGB58B1352A
Cooling Capacity Btuh 59,500 59,500 59,500
SEER 11.10 11.10 11.10
Heating

Input Btuh 90,000 115,000 135,000

Output Btuh 72,000 92,000 108,000

AFUE 81.4 79.9 80.5

Temperature Rise °F 25-55 25-55 25-55

Number of Burners 4 4 4

Compressor

R.L. Amps 28.8 28.8 28.8
L.R. Amps 169 169 169

Condenser Coil

Face Area (sq. ft.) 17.2 17.2 17.2

Rows Deep 2 2 2

Fins/Inch 17 17 17

Condenser Fan

Diameter (in.) 24 24 24

CFM 4700 4700 4700

Condenser Fan Motor

Horsepower 1/3 1/3 1/3

R.L. Amps 2.5 2.5 2.5
L.R. Amps 6.4 6.4 6.4

Blower Motor

Horsepower 3/4 3/4 3/4

R.L. Amps 5.6 5.6 5.6
L.R. Amps 12.9 12.9 12.9

Blower Wheel Dia. x Width (in.) 11X8 11X8 11X8

Rated CFM, Cooling 1750 1750 1750

Max. External 0.5" wc 0.5" wc 0.5" wc

Combustion Blower

Diameter x Width (in.) 4 x 1.25 4 x 1.25 4 x 1.25

No. 111

Condenser Blower Motor

H.P. 1/32 1/32 1/32

F.L. Amps. 0.5 0.5 0.5

Press. Switch Setting (" W.C.) -0.65 -0.6 5 -0.65

Ignition - Lockout Timing (sec.) 4 4 4

Flame Sense Current (microamps)

Minimum 111

Maximum 666

Evaporator Coil

Face Area (Sq. Ft.) 5.7 5.7 5.7

Rows Deep 4 4 4

Fins/Inch 15 15 15

External Filter Size (Sq. Ft.)

Drain Line Size (in.) 3/4 3/4 3/4

Expansion D evice (Cooling) TEV TEV TEV

Refrigerant Charge Refer to unit name plate for correct charge

Power Supply** 208/230-60-1 208/230-60-1 208/230-60-1

Min. Circuit Ampacity 33.75 33.75 33.75

Max. Overcurrent Device 50 50 50

Electrical Entrance Size

Power Supply 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2" 1 1/4", 1 1/2", 2"

Low Voltage 7 /8" 7/8" 7/8"

Approx. Shippi ng Weight (lbs) 531 531 531

Table 1C

Gas Pack Specifications

4

Nominal

Model

PGC24B0452A 24000 850 45000 930 570 35 A A
PGC24B0702A 24000 850 70000 1140 570 45 A B
PGC30B0702A 30000 1100 70000 1140 570 45 B B
PGC36BO702A 36000 1300 70000 1140 570 45 C B
PGC36B0902A 36000 1300 90000 1350 570 55 C C
PGC42B0902A 42000 1450 90000 1650 815 40 A A
PGC42B1152A 42000 1450 115000 1530 815 55 A B
PGC48B0902A 48000 1700 90000 1650 815 40 B A
PGC48B1152A 48000 1700 115000 1530 815 55 B B
PGC60B0902A 60000 1750 90000 1650 815 40 A A
PGC60B1352A 60000 1750 135000 1900 815 55 A B

1. Installation is to be adjusted to obtain temperature rise within the range specified on the rating plate.

2. The temperature rise is for units installed at 0-2000 feet. At higher altitudes, a properly derated unit will have
approximately the same temperature rise and CFM.

3. The chart is applicable for both vertical and horizontal airflow.

4. All speed tap settings are factory selected according to unit size.

5. Data shown without filters. Consult filter manufacturer for pressure drop to be added.

6. Motor is constant CFM for external static pressures 0.1" to 0.8" W.C.

7. Maximum External Pressure Limits

PGC 24-42 0.8" W.C.
PGC46 & 60 1.0 W.C.

Cooling Nominal

Capacity

(MBh)

Cooling

CFM

(Y+G) (W1) (G) Cool Heat

Nominal

Heating Nominal Nominal Temp. Speed

Capacity

(Input)

Heating

CFM

Fan Only Rise (°F) Taps

Table 2A

PGC Temperature Rise Table

Model Speed CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE

Motor 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Hi 2160 31 2120 31 2080 32 2030 33 1990 34 1945 34 1900 35 1835 36

PGB58B0902C Med 1750 38 1750 39 1700 39 1680 40 1680 40 1615 41 1575 42 1490 45

Lo 1490 45 1480 45 1470 45 1450 46 1440 46 1415 47 1360 49 1280 52
Hi 2160 --- 2120 --- 2080 41 2030 42 1990 43 1945 44 1900 45 1835 46

PGB58B1152C Med 1750 49 1750 49 1700 50 1680 51 1650 52 1615 53 1575 54 1470 57

Lo 1490 57 1480 58 1470 58 1460 58 1440 59 1415 60 1360 63 1280 67
Hi 2160 46 2120 47 2080 48 2030 49 1990 50 1945 51 1900 53 1835 54

PGB58B1352C Med 1750 57 1750 58 1700 59 1680 60 1650 61 1615 62 1575 63 1490 67

Lo 1490 67 1480 68 1470 68 1460 68 1440 69 1415 --- 1360 --- 1280 ---

NOTE:

1. All airflow is dry coil.

2. Installation is to be adjusted to obtain temperatures rise within the range specified on the rating plate.

3. The above chart is for information only. For satisfactory operation, external static pressure should not exceed value shown on the rating
plate. The shaded area ( ) indicates in excess of maximum external static pressure allowable when heating.

4. This chart is for units installed at 0-2000 feet. At higher altitudes, a properly derated unit will have approximately the same temperature
rise at a particular CFM, while ESP at that CFM will be lower.

5. Cooling operation may require a different fan speed than heating operation. For details, see Wiring Diagrams.

6. Above chart is applicable for both vertical and horizontal airflow.

External Static Pressure, Inches Water Column

Table 2B

PGB CFM& Temperature Rise vs. External Static Pressure Table

5

II. Safety Information

WARNING

Important
To The Installer

Before installing this unit please read this manual to fa­miliarize yourself with the specific items which must be
adhered to such as maximum external static pressure
to unit, air temperature rise, minimum or maximum CFM
and motor speed connections. Affix these Installation
Instructions adjacent to the appliance.

To The Owner

It is important that you complete the owner registration
card and mail it today. This will assist Amana in contact­ing you if any service or warranty information should
change in the future. When completing the registration
card, be sure to include the Model, Manufacturing and
Serial Numbers, plus the installation date.

Your warranty certificate is also supplied with the unit.
Read the warranty carefully and note what is covered.
Keep the warranty certificate in a safe place so you can
find it if necessary.

If additional operating Instructions are required, call the
dealer where the purchase was made. Keep this litera­ture in a safe place for future reference.

Do not store gasoline or other flammable
vapors and liquids in the vicinity of this
or any other appliance.

If you smell gas:

• Extinguish any open flame.

• Do not try to light appliance.

• Do not touch any electrical switch: do not use any

phone in building.

• Immediately call gas supplier from a neighbor’s

phone. Follow gas supplier’s instructions.

• If gas supplier cannot be reached, call fire depart-

ment.

WARNING

Improper installation, adjustment, alter­ations, service or maintenance can cause
property damage, personal injury, or
death. Follow all procedures in this
manual. For assistance or additional in­formation, contact a qualified installer,
service agency, or gas supplier.

WARNING

Should overheating occur or the gas sup­ply fail to shut off, turn off the manual
gas control valve to the furnace before
shutting off the electrical supply.

CAUTION

On PGC48 - 60 and PGB58 Only: To avoid
damage to the compressor, engage the
electrical disconnect switch to the com­pressor unit four hours prior to operat­ing air conditioner after the electrical dis­connect is off for a prolonged period of
time (during vacation, etc.). This time
lapse allows the compressor crankcase
to attain a proper operating temperature.

WARNING

If the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, per­sonal injury, or death.

WARNING

This product contains or produces a
chemical(s) which may cause death or
serious illness and which are known by
the State of California to cause cancer,
birth defects or other reproductive harm.

CAUTION

This unit should not be used as a “con­struction heater” during the finishing
phases of construction on a new struc­ture. This type of use may result in pre­mature failure of the unit due to extremely
low return air temperatures and exposure
to very dirty atmospheres.

6

Locating The Unit

WARNING

To avoid possible equipment damage,
fire, personal injury, or death, the follow­ing points must be observed when install­ing the unit.

All Installations:

• For proper flame pattern within the heat exchanger

and proper condensate drainage, the unit must be
mounted level.

• The unit should be as centralized as is practical with

respect to the air distribution system. This unit is for
outdoor installation ONLY!

• The flue outlet hood must be at least 12 inches from

any opening through which flue gases could enter a
building, and at least three feet above any forced air
inlet located within ten feet. The economizer/manual
outdoor air intake/motorized outdoor air intake and
combustion air inlet mounted on the unit are not af­fected by this restriction.

• To avoid possible corrosion of the heat exchanger,

do not locate the unit in an area where the outdoor
air (i.e., combustion air for the unit) will be frequently
contaminated by compounds containing chlorine or
fluorine. Common sources of such compounds in­clude swimming pools and chlorine bleaches, paint
stripper, adhesives, paints, varnishes, sealers,
waxes (which are not yet dried) and solvents used
during construction and remodeling. Various com­mercial and industrial processes may also be
sources of chlorine/fluorine compounds.

• To avoid possible illness or death of the building oc-

cupants, do NOT locate outside air intake device
(economizer, manual outdoor air intake, motorized
outdoor air intake) too close to an exhaust outlet,
gas vent termination, or plumbing vent outlet. For
specific distances required, consult local codes.

• Allow clearances from the enclosure as shown in

Figure 1 for fire protection, proper operation, and
service access. These clearances must be perma­nently maintained.

• The combustion air inlet and flue outlet hoods on

the front of the unit must never be obstructed. If used,
do not allow the economizer/manual outdoor air
damper/ motorized outdoor air damper to become
blocked by snow or debris. In some climates or lo­cations, it may be necessary to elevate the unit to
avoid these problems.

• When the unit is heating, the temperature of the re-

turn air entering the unit must be between 50° F and
100° F.

Ground Level Installations Only:

• When the unit is installed on the ground adjacent to

the building, a level concrete (or equal) base is rec­ommended. Prepare a base the same physical size
as the unit or slightly larger and 3 inches thick.

• The base should also be located where no run-off

of water from higher ground can collect in the unit.

• The feet on the unit may not be removed.

Rooftop Installations Only:

• To avoid possible property damage or personal in­jury, the roof must have sufficient structural strength
to carry the weight of the unit(s) and snow or water
loads as required by local codes.

• If horizontal air delivery is used, the unit may be in­stalled directly on wood floors or on Class A, Class
B, or Class C roof covering material, provided that
the feet on the unit are not removed.

• To avoid possible personal injury, a safe, flat sur­face for service personnel should be provided.

• If vertical air discharge is used and the unit is in­stalled on combustible flooring or class A, B, or C
roofing material, then the Amana roof curb (PRC3A
or PRC5A) listed on the unit nameplate is required.

III. General Information

WARNING

Improper installation, repair, operation or
maintenance of this product may result
in property damage, personal injury, or
death from hazards such as fire, explo­sions, smoke, soot, condensation, elec­tric shock or carbon monoxide.

This unit is approved only for an outdoor installation. To
assure that your unit operates safely and efficiently, it
must be installed, operated, and maintained in accor­dance with these installation and operating instructions,
all local building codes and ordinances, or in their ab­sence, with the latest edition of the National Fuel Gas
Code. (ANSI Z223.1).

The heating and cooling capacities of the unit should be
greater than or equal to the design heating and cooling
loads of the area to be conditioned. The loads should
be calculated by an approved method or in accordance
with ASHRAE Guide or Manual J - Load Calculations
published by the Air Conditioning Contractors of America.

Obtain from:

American National Standards Institute
1430 Broadway
New York, NY 10018

7

Figure 1

Required Clearances For All Installations

8

Transportation Damage

All units are securely packed in shipping cartons ap­proved by the International Safe Transit Association. The
carton should be checked upon arrival for external dam­age. If damage is found, a request for inspection by car­rier agent should be made in writing immediately.

The unit should be carefully inspected upon arrival for
damage and bolts or screws which may have loosened
in transit. In the event of damage, the consignee should:

1. Make notation on delivery receipt of any visible dam­age to shipment or container.

2. Notify carrier promptly and request an inspection.

3. In case of concealed damage, carrier should be no­tified as soon as possible-preferably within 5 days.

4. File the claim with the following supporting docu­ments within the 9-month statute of limitations.

a. Original Bill of Lading, certified copy, or indemnity

bond.
b. Original paid freight bill or indemnity in lieu thereof.
c. Original invoice or certified copy thereof, showing

trade and other discounts or reductions.
d. Copy of the inspection report issued by carrier

representative at the time damage is reported to

the carrier. The carrier is responsible for making

prompt inspection of damage and for a thorough

investigation of each claim. The distributor or

manufacturer will not accept claims from dealers

for transportation damage.

NOTE: When inspecting the unit for transportation dam­age, remove all packaging materials. Follow local codes
when disposing or recycling the packaging material.

IV. Rigging and Handling

CAUTION

To prevent possible property damage, the
unit should remain in an upright position
during all rigging and moving operations.
To facilitate lifting and moving when a
crane is used, place the unit in an ad­equate cable slide.

Important: If using bottom discharge with roof curb,

ductwork should be attached to the curb prior to install­ing the unit. Ductwork dimensions are shown in Amana
Roof Curb Installation Instructions.

Refer to the Amana Roof Curb Installation Instructions
for proper curb installation. Curbing must be installed in
compliance with the National Roofing Contractors As­sociation Manual.

Lower unit carefully onto roof mounting curb. While rig­ging unit, center of gravity will cause condenser end to
be lower than supply air end.

If using a fork lift, see Figure 2 for location of fork prongs.
Make certain prongs support unit weight.

Locating The Thermostat

The thermostat should be mounted 5 feet above the floor,
on a vibration free inside wall in a room or a hallway that
has good air circulation.

Movement of air should not be obstructed by furniture,
door, draperies, etc. The thermostat should not be
mounted where it will be affected by drafts, hot or cold
water pipes or air ducts in walls, radiant heat from fire­place, lamps, the sun, television, etc. Consult the In­struction Sheet packaged with the thermostat for mount­ing instructions.

All units have one stage of heating and one stage of
mechanical cooling. Units which will have economizers
may use thermostats with one or two stages of cooling.

Figure 2
Rigging

9

V. Gas Piping

IMPORTANT NOTE: This furnace is factory set to oper-

ate on natural gas at the altitudes shown on the rating
plate. If operation at higher altitudes and/or propane gas
operation is required, obtain and install the proper con­version kit(s) before operating this furnace. Failure to
do so may result in unsatisfactory operation and/or equip­ment damage. (High altitude kits are for U.S. installa­tions only.)

The rating plate is stamped with the model number, type
of gas and gas input rating. Make sure the furnace is
equipped to operate on the type of gas available.

INL ET GA S PRESSURE

Natural Min. 5.0" W.C., Max. 10.0" W.C.

Propane Min. 11.0" W. C. , M ax . 14. 0" W. C.

Inlet Gas Pressure Must Not Exceed the Maximum Value Shown
in Table 3.

Table 3

The minimum supply pressure should not vary from that
shown in the table above because this could prevent
the furnace from having dependable ignition. In addi­tion, gas input to the burners must not exceed the rated
input shown on the rating plate. Overfiring of the fur­nace could result in premature heat exchanger failure.

High Altitude Derate (US. Installations Only ­Canadian Installations to 4500 Feet Only)

When this furnace is installed at altitudes above 2000
feet, the furnace input must be derated 4% for each 1000
feet above sea level because the density of the air is
reduced.

In some areas the gas supplier will derate the heating
value of the gas at a rate of 4% for each 1000 feet above
sea level. If this is not done, smaller orifices will be re­quired at altitudes above 3500 feet (non-derated natu­ral gas) or 4500 feet (non-derated propane gas).

A different pressure switch will be required at altitudes
more than 4000 feet above sea level. This is required
regardless of the heat content of the fuel used.

High altitude kits can be purchased depending on the
altitude and usage of propane or natural gas. Refer to
the high altitude instruction manual included with this
furnace to determine which high altitude components to
use.

Adjustment of the manifold pressure to a lower pres­sure reading than what is specified on the furnace name­plate is not a proper derate procedure. With a lower den­sity of air and a lower manifold pressure at the burner
orifice, the orifice will not aspirate the proper amount of
air into the burner. This can cause incomplete combus­tion of the gas, flashback, and possible yellow tipping.

Gas Piping

IMPORTANT NOTE: To avoid possible unsatisfactory

operation or equipment damage due to under firing of
equipment, do not undersize the natural gas/propane
piping from the meter/tank to the furnace. When sizing
a trunk line as shown in Table 4, include all appliances
on that line that could be operated simultaneously.

The rating plate is stamped with the model number, type
of gas and gas input rating. Make sure the furnace is
equipped to operate on the type of gas available.

The gas line installation must comply with local codes,
or in the absence of local codes, with the latest edition
of the National Fuel Gas Code (ANSI Z223.1).

Connecting The Gas Piping - Natural Gas

Natural Gas Capacity of Pipe

in Cubic Feet of Gas Per Hour (CFH)

Length of

Pipe in Feet 1/2 3/4 1 1 1/4 1 1/2

10 132 278 520 1050 1600
20 92 190 350 730 1100
30 73 152 285 590 980
40 63 130 245 500 760
50 56 115 215 440 670
60 50 105 195 400 610
70 46 96 180 370 560
80 43 90 170 350 530
90 40 84 160 320 490

100 38 79 150 305 460

Press u re = .5 0 PSIG or l e ss and Pres sure Drop of 0.3" W .C. (Bas e d

Btuh Furnace Input

CFH=

Calorific Value of Gas

Nominal Black Pipe Si ze (inches)

on 0. 60 Spec ific G ravity Ga s)

Table 4

Refer to Figure 3 for the general layout at the furnace.
The following rules apply:

1. Use black iron or steel pipe and fittings for the build­ing piping.

2. Use pipe joint compound on male threads only. Pipe
joint compound must be resistant to the action of
the fuel used.

3. Use ground joint unions.

4. Install a drip leg to trap dirt and moisture before it
can enter the gas valve. The drip leg must be a mini­mum of three inches long.

5. Use two pipe wrenches when making connection to
the gas valve to keep it from turning.

6. Install a manual shut-off valve in a convenient loca­tion (within six feet of unit) between the meter and
the unit.

7. Tighten all joints securely.

10

Figure 3

Proper Piping Practice

WARNING

To avoid personal injury or property dam­age, be sure there is no open flame in the
vicinity during air bleeding procedure.

There will be air in the gas supply line after testing for
leaks on a new installation. Therefore, the air must be
bled from the line by cracking open the ground joint union
until pure gas is expelled. Tighten union and wait for
five minutes until all gas has been dissipated in the air.
Be certain there is no open flame in the vicinity during
air bleeding procedure. The unit is placed in operation
by closing the main electrical disconnect switch for the
furnace.

Tanks And Piping for Propane Gas Units

Checking The Gas Piping

CAUTION

To avoid the possibility of personal in­jury, property damage or fire, the follow­ing instructions must be performed re­garding gas connections and pressure
testing:

• This unit and its gas connections must
be leak tested before placing in opera­tion. Because of the danger of explosion
or fire, never use a match or open flame
to test for leaks. Never exceed speci­fied pressures for testing. Higher pres­sure may damage gas valve and cause
overfiring which may result in heat fail­ure.

• This unit and shut-off valve must be dis­connected from the gas supply during
any pressure testing of that system at
test pressures in excess of 1/2 PSIG
(3.48 kPa).

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

WARNING

Personal Injury Hazard
Failure to detect a propane gas leak could

result in an explosion or fire which could
cause death, serious personal injury, or
property damage.

Iron oxide (rust) can reduce the level of
odorant in propane gas. A gas detecting
device is the only reliable method to de­tect a propane gas leak. Contact the lo­cal propane supplier about installing a
warning device to sound an alert if a gas
leak should develop.

All propane gas equipment must conform to the safety
standards of the National Board of Fire Underwriters (See
NBFU Manual 58).

For satisfactory operation, propane gas pressure must
be 10 inch W.C. at the furnace manifold with all gas ap­pliances in operation. Maintaining proper gas pressure
depends on three main factors:

1. Vaporization rate, which depends on (a) tempera­ture of the liquid, and (b) wetted surface area of the
container or containers.

2. Proper pressure regulation. (Two-stage regulation
is recommended from the standpoint of both cost
and efficiency.)

3. Pressure drop in lines between regulators, and be­tween second stage regulator and the appliance.
Pipe size required will depend on length of pipe run
and total load of all appliances.

Complete information regarding tank sizing for vapor­ization, recommended regulator settings and pipe siz­ing is available from most regulator manufacturers and
propane gas suppliers.

11

Special pipe dope must be used when assembling pip­ing for this gas as it will quickly dissolve white lead or
most standard commercial compounds. Shellac base
compounds resistant to the actions of liquefied petro­leum gases such as Gasolac, Static, Clyde or John
Crane are satisfactory.

Please refer to Figure 4 for typical propane gas instal­lations.

Figure 4

Typical Propane Gas Piping

WARNING

Failure to follow the instructions on Page
6 of this manual when the presence of
gas is suspected could result in death or
serious personal injury. An undetected
gas leak would create a danger of explo­sion or fire.

If the propane gas furnace is installed in
an excavated area or a confined space, it
is strongly recommended contacting a
propane gas supplier about installing a
warning device to warn of a gas leak.

Propane gas is heavier than air and any
leaking gas can settle in low areas or
confined areas.

Propane gas odorant may fade, making
the gas undetectable except with a
warning device.

Vl. Electrical Wiring

WARNING

To avoid personal injury or death due to
electrical shock, disconnect the electri­cal power before electrically connecting
the unit.

The units are designed for operation on 60 hertz current
and at voltages as shown on the rating plate. All internal
wiring in the unit is complete. It is necessary to bring in
the power supply to the contactor as shown on the unit
wiring diagram which is supplied with each unit. The 24V
wiring must be connected between the unit control panel
and the room thermostat. Refer to Figure 5 for location
of low voltage terminal board and Figure 6 for proper
thermostat wiring.

Table 5

Propane Pipe Sizing

Low Voltage
Board

Figure 5

Low Voltage Control Box

12

Please refer to the unit wiring diagram for electrical con­nections. When installed, the unit must be electrically
grounded in accordance with local codes or in the ab­sence of local codes with the latest edition of National
Electrical Code, ANSI/NFPA No. 70.

WARNING

To avoid death or personal injury due to
electrical shock, wiring to the unit must
be properly grounded.

CAUTION

To avoid personal injury or property dam­age due to fire, use only copper conduc­tors.

The best protection for the wiring is the smallest fuse or
breaker which will hold the equipment on the line during
normal operation without nuisance trips. Such a device
will provide maximum circuit protection. DO NOT EX­CEED THE MAXIMUM OVERCURRENT DEVICE SIZE
SHOWN ON UNIT DATA PLATE.

Be sure line voltage connections are made through
weatherproof fittings. All exterior power supply and
ground wiring must be in approved weatherproof con­duit. Low voltage wiring from the unit control panel to
the thermostat requires coded cable. For ground level
and rooftop wiring refer to Figure 8.

CAUTION

To prevent improper and dangerous op­eration due to wiring errors, label all wires
prior to disconnection when servicing
controls. Verify proper operation after
servicing.

Vll. Circulating Air and Filters

Airflow Conversion

Units can easily be converted from horizontal to vertical
airflow delivery.

Units will ship from the factory ready for horizontal air­flow. If conversion to vertical airflow is necessary, pro­ceed as follows:

IMPORTANT: Be sure to save the flue hood assembly
(cardboard box) which is shipped in the return air com­partment of the unit.

• Remove panels from the bottom of the unit, saving

the mounting screws.

• Remove insulation from outside of supply duct cover.

No insulation should face outside.

• Relocate the panels on to the side of the unit, se-

curing with the screws removed earlier.

• The unit will deliver the same amount of air whether

the airflow is vertical or horizontal. For details, see
the fan tables on Pages 2 - 5.

Unit Voltage

The unit transformer is factory connected for 230V op­eration. If the unit is to operate on 208V, reconnect the
transformer primary lead and induced draft blower mo­tor leads as shown on the unit wiring diagram.

Heat Anticipator Setting

The heat anticipator in the room thermostat must be
correctly adjusted to obtain the proper number of heat­ing cycles per hour and to prevent the room tempera­ture from overshooting the room thermostat setting. Heat
anticipator must be set at 0.8 amps.

Figure 6

Typical Thermostat and Unit 24 V Wiring

Hookup

Figure 7

Airflow Conversion

Ductwork

CAUTION

To avoid possible fire, the cardboard
shipping support (located behind the
supply panel) must be removed before
operation.

IMPORTANT: Be sure to save the flue hood assembly
which is shipped in a cardboard box in the return air
compartment of the unit.

13

Typical Wiring

(Ground Level)

Disconnect Switch

High Voltage Source

High Voltage
Entrance

Low Voltage
Entrance

Rooftop

Curb

Junction

Box

Low Voltage

Entrance

Typical Wiring

(Rooftop)

Disconnect Switch

High Voltage Source
High Voltage

Entrance

Figure 8

Typical Electrical Wiring

14

Duct systems and register sizes must be properly de­signed for the C.F.M. and external static pressure rating
of the unit. Ductwork should be designed in accordance
with the recommended methods of Air Conditioning Con­tractors of America Manual D (Residential) or Manual Q
(Commercial). All ductwork exposed to the outdoors must
include a weatherproof barrier and adequate insulation.

A duct system should be installed in accordance with
Standards of the National Board of Fire Underwriters for
the Installation of Air Conditioning, Warm Air Heating
and Ventilating Systems, pamphlets No. 90A and 90B.

The warm air supply duct from the unit through a wall
fabricated of combustible material may be installed with­out clearance. However, minimum clearances for the unit
must be observed as shown in Section III.

It is recommended that the outlet duct be provided with
an access panel. This access should be large enough
to inspect the air chamber downstream from the heat
exchanger for any smoke or combustion gas leaks. A
cover should be tightly attached to prevent air leaks.

For horizontal airflow, duct flange dimensions on the unit
are shown in Section III.

For vertical airflow, the ductwork should be attached to
the roof curb prior to installing the unit. Ductwork dimen­sions are shown in the Amana PRC roof curb installa­tion manual.

If desired, supply and return duct connections to the unit
may be made with flexible connections to reduce pos­sible noise transmission.

Filters

Important: If you will be using the Over/Under Transition
Kit, (PDTROU3A or PDTROU5A) you cannot use the
unit filter rack.

If you are using the Over/Under transition kit or are sim­ply choosing not to use this filter rack, the filter(s) may
be located in the return air duct(s) or return air filter
grille(s). Filters installed external to the unit should be
sized in accordance with their manufacturer recommen­dations. If you choose to use a throwaway filter it should
be sized for a maximum face velocity of 300 feet per
minute.

Important: The PGC 42 and 48 package units contain
an evaporator drip pan installed on the return air side of
the indoor coil.

If an economizer is to be installed on these units, the
drip pan must be removed. The pan can be removed by
cutting it away. It will not be needed when an econo­mizer is installed.

If filters are to be installed on these units, they must be
from filter kit PFK5B1 or PFK5B6. The filters in these
kits are sized to fit with the drip pan in place.

Filter Installation

Important: When installing a filter, always make certain

the air flow arrows on the filter point toward the indoor
blower.

To install a filter in the filter rack, proceed as follows:

1. Disconnect power to the unit.

2. Locate the filter access door above the return air
opening. See Figure 9.

Filter Access Door

WARNING

Never operate furnace without a filter in­stalled as dust and lint will build up on
internal parts resulting in loss of effi­ciency, equipment damage, and possible
fire.

A return air filter is not supplied with this unit; however,
there must be a means of filtering all of the return air.
For your convenience, this unit contains a factory in­stalled filter rack. If you choose to install the return air
filter in the unit filter rack, use the appropriate Amana
filter kit or a permanent filter that is properly sized as
follows:

Model Amana Kit #

PGC24, 30, or 36

PGC42, 48, 60

or PGB58

The Amana filter kit includes a permanent filter, door
label, and installation instructions. PFK3A1 and PFK5B1
contain filter, label, and instructions for one unit. PFK3A6
and PFK5B6 contain filters, labels, and instructions for
six units.

PFK3A1 or

PFK3A6

PFK5B1 or

PFK5B6

Required Perm anent

Filter Size

26" x 20" x 1"

32-5/8" x 22-3/8" x 1"

Figure 9

Filter Access Door

3. Remove the four 5/16" sheet metal screws and set
the filter access door aside.

4. Insert the filter into the filter rack channels and lower
into place. Make sure the filter slides completely to
the bottom so no part of the filter remains outside
the back panel.

5. Return the filter access door to its original position
and secure it with the four sheet metal screws.

6. a. If you are using an Amana filter kit, affix the FIL­TER ACCESS label to the filter access door.

b. If you are NOT using an Amana filter kit, clearly
mark the filter access door “FILTER ACCESS”.

7. Reconnect the power.

NOTE: A clean permanent filter installed as described
above will have a negligible effect on air flow.

15

VIII. Flue Vent

Flue Hood And Air Inlet Hood Installation

The flue hood and air inlet hood are packaged in a box
which is located inside the return air compartment. They
must be installed prior to operation of the unit. See Fig­ure 10.

To install the flue hood cover:

1. Remove the flue hood from inside the box.

2. Slide the upper lip of the hood cover under the top
edge of the unit.

3. Attach the flue hood with two sheet metal screws.

To install the air inlet hood:

1. Remove hood from inside box.

2. Attach hood by using three sheet metal screws.

3. Insofar as is practical, close all building doors and
windows and all doors between the space in which
the appliances remaining connected to the common
venting system are located and other spaces of the
building. Turn on clothes dryers and any appliance
not connected to the common venting system. Turn
on any exhaust fans, such as the range hoods and
bathroom exhausts, so they will operate at maximum
speed. Do not operate a summer exhaust fan. Close
fireplace dampers.

4. Follow the lighting instructions. Place the appliance
being inspected in operation. Adjust the thermostat
so appliance will operate continuously.

5. Test for spillage at the draft hood relief opening af­ter five minutes of main burner operation. Use the
flame of a match or candle.

6. After it has been determined that each appliance
remaining connected to the common venting sys­tem properly vents when tested as outlined above,
return doors, windows, exhaust fans, fireplace damp­ers, and any other gas-burning appliance to their
previous conditions of use.

7. If improper venting is observed during any of the
above tests, the common venting system must be
corrected in accordance with the latest edition of the
National Fuel Gas Code, (ANSI Z223.1).

If resizing any portion of the common venting system,
use the appropriate table in Appendix G, in the latest
edition of the National Fuel Gas Code, (ANSI Z223.1).

Figure 10

Air Inlet Hood and Flue Hood

Replacing a Indoor Furnace

WARNING

To prevent property damage, personal
injury or death, do not vent this unit with
any other appliance.

When an existing indoor furnace is removed from a
venting system servicing other appliances, the venting
system may be too large to properly vent the remaining
attached appliances (water heater, etc.).

The following steps must be followed with each appli­ance remaining connected to the common venting sys­tem placed in operation, while the other appliances
remaining connected to the common venting system are
not in operation.

1. Seal any unused openings in the common venting
system.

2. Visually inspect the venting system for proper size
and horizontal pitch and determine there is no block­age or restriction, leakage, corrosion and other de­ficiencies which could cause an unsafe condition.

IX. Condensate Drain

Condensate Drain Connection

The evaporator condensate drain connection is 3/4" FPT.
Clean out the inside of the drain connection to assure
good condensate water runoff before connecting drain
line. The drain line should have a trap on it to prevent
debris, insects and dirt from being drawn into the return
air system. Refer to Figure 11 for location. A 1" mini­mum head is recommended to allow draining against
the negative pressure inside the unit.

1" Minimum

Pitch Toward Drain

Trap

The Drain Connection Must
Be The Same Size as On
Unit or Larger

Figure 11

Typical Condensate Drain

NOTE: To avoid double trapping and an overflowing

drain pan, soft plastic drain lines are not recommended.

Condensate
Drain Connection

16

Air Circulation Blower

ON

OFF

Gas Valve

Ignitor

Pressure Switch
(N.O. Contacts)

Combustion Blower

Thermostat

Timing Chart for Normal Robertshaw Operation (PGB & PGC)

OPEN

CLOSED

ON

OFF

CLOSED

OPEN

ON

OFF

ON

OFF

Se conds 0 34 38 110 0 90

Ignitor OFF

Thermostat ON

Air Blower ON

Gas Valve Opens

Purge Ends.

Thermostat OFF

Combustion Product

Figure 12

Air Blower OFF

Combustion

Blower OF F

Indoor F an

Outdoor Fan
and
Compressor

Thermostat

On
Off

On
Off

On
Off

Seconds 0 15 0 45
(approx.) (approx.)

Figure 13A

PGB Timing Chart for Normal Cooling Operation

Indoor Fan

Outdoor Fan
and
Compressor

Thermostat

On
Off

On
Off

On
Off

Seconds 0 30 0 30
(approx.) (approx.)

Figure 13B

PGC Timing Chart for Normal Cooling Operation

17

X. Heating Sequence of Operations
PGB & PGC)

Normal Sequence of Operation - Heating

See Figure 12

1. Thermostat calls for heat. The combustion blower is
immediately energized.

2. The pressure switch contacts transfer.

3. The ignitor is energized and allowed to preheat for
38 seconds.

4. The gas valve is energized delivering gas to the
burners and starting combustion.

5. The control checks the signal from the flame sen­sor. Gas flow will continue only if a proper signal is
present within seven seconds after the gas valve
opens. As soon as flame is proven, the ignitor is de­energized.

6. The unit will continue to fire while the helical fan
control heats up. The fan control will start the main
circulating air blower approximately 75 seconds af­ter the gas valve opens (this time may vary depend­ing on the control setting).

7. The furnace will deliver heat to the conditioned space
until the thermostat is satisfied.

8. The gas valve and combustion blower will be de­energized when the thermostat opens.

9. There is a 90 second delay (approximate) before
the main air blower stops. This allows any additional
heat in the heat exchanger to be transferred to the
conditioned space.

PGC Normal Sequence of Operations - Cooling

See Figure 13B

1. Thermostat calls for cooling. The compressor, in­door fan, and outdoor fan are energized.

2. Approximately 30 seconds later, the indoor fan
ramps up to full speed.

3. The unit will deliver cooling to the conditioned space
until the thermostat is satisfied.

4. The compressor and outdoor fan will be de-ener­gized when the thermostat opens. It is normal for
the scroll compressor to produce a short burping
sound at this time as its internal pressures are equal­ized. (The PGC48 has a piston compressor. All other
PGC and PGB have scroll compressors.)

5. Refrigerant will continue to flow through the capil­lary tube (sizes 24 to 42) until the high and low side
pressures are approximately equal. For the PGC48,
60 and PGB58 refrigerant will continue to flow
through the thermal expansion valve until the high
and low side pressures are approximately 50 PSI
apart.

6. The indoor fan continues to run for approximately
30 seconds after the thermostat is satisfied. This
allows additional cooling from the indoor coil to be
transferred to the conditioned space. Then, the in­door fan ramps down in 30 seconds to the OFF con­dition.

XIl. Startup and Adjustment

Heating Startup

XI. Cooling Sequence of Operations

PGB Normal Sequence of Operations - Cooling

See Figure 13A

1. Thermostat calls for cooling. The compressor and
outdoor fan are energized.

2. Approximately 15 seconds later, the fan time delay
relay closes. The indoor fan now begins operation.

3. The unit will deliver cooling to the conditioned space
until the thermostat is satisfied.

4. The compressor and outdoor fan will be de-ener­gized when the thermostat opens. It is normal for
the scroll compressor to produce a short burping
sound at this time as its internal pressures are equal­ized.

5. Refrigerant will continue to flow through the capil­lary tube (sizes 24 to 42) until the high and low side
pressures are approximately equal. Refrigerant will
continue to flow through the thermal expansion valve
until the high and low side pressures are approxi­mately 50 PSI apart.

6. The indoor fan continues to run for approximately
45 seconds after the thermostat is satisfied. This
allows additional cooling from the indoor coil to be
transferred to the conditioned space.

General Information

This furnace is equipped with an electronic ignition de­vice which lights the burners. It also has a power vent
blower to exhaust combustion products.

On new installations, or if a major part such as the gas
valve, pressure switch or fan/limit control has been re­placed, the operation of the furnace must be checked.

Check furnace operation as outlined in the following in­structions. If any sparking, odors, or unusual noises are
encountered, shut off electrical power and recheck for
wiring errors, or obstructions in or near the blower mo­tors. Various shipping materials must be removed be­fore the indoor and outdoor fans can be operated.

Heat Anticipator Setting

The heat anticipator in the room thermostat must be
correctly adjusted to obtain the proper number of heat­ing cycles per hour and to prevent the room tempera­ture from over-shooting the room thermostat setting.
Heat anticipator must be set at 0.8 amps.

Roll-out Protection Control

If the flames from the burners are not properly drawn
into the heat exchanger, a protection device will open,
causing the gas valve to close. The protection device is
located on the manifold assembly (Figure 14).

18

WARNING

To avoid the risk of fire or explosion, a
qualified servicer must investigate the
problem which caused the roll-out pro­tection device to open before manually
resetting the device.

Flame Roll-Out

Protector

(Manual Re s et)

Figure 14

Rollout Protection

(Shown Without Heat Shield)

Reset After Lock-out

Should ignition not be achieved after three tries for any
reason, it will be necessary to reset the electronic igni­tion module. To reset, it is only necessary to turn the
thermostat below room temperature for thirty seconds,
and then reset it to the desired temperature. The fur­nace may also be reset after lockout by disengaging the
electric disconnect switch to the furnace for thirty sec­onds.

Operating Instructions (Heating)

NOTE: Figure 16 illustrates the proper gas valve mount-

ing location.

Flame Roll-Out

Protector

(Manual Reset)

Secondary Limit Control

On the PGC and PGB series, a second limit control is
placed on the blower scroll that will open if the blower
should fail, causing elevated temperatures at the con­trol. The reason for elevated temperatures at the control
should be ascertained and repaired prior to resetting this
manual reset control. The secondary limit control is lo­cated behind the front center panel on the blower scroll.
(Figure 15).

Secondary Limit

NOTE: Position of Limit Control

Differs From Model to Model.

Control

Figure 15

Position of Limit Control

Figure 16

Gas Valve

1. Close the manual gas valve external to the furnace.

2. Turn off the electrical power supply to the furnace.

3. Set the room thermostat to its lowest possible set­ting.

4. Remove the right hand door on the front of the fur­nace by removing screws.

5. This furnace is equipped with an ignition device
which automatically lights the burner. Do NOT try to
light burner by any other method.

6. Turn the gas control valve knob to the OFF position.
Do not force. (Figure 16).

7. Wait five minutes to clear out any gas.

8. Smell for gas, including near the ground. This is im­portant because some types of gas are heavier than
air. If you have waited five minutes and you do smell
gas, immediately follow the instructions on Page 6
of this manual. If you have waited five minutes and
you do NOT smell gas, turn the gas control valve
knob to the ON position. (Figure 16).

9. Replace the door on the front of the furnace.

10.Open the manual gas valve external to the furnace.

11.Turn on the electrical power supply to the furnace.

12.Set the thermostat to desired setting.

NOTE: There is a one minute delay between thermo­stat energizing and burner firing.

19

Gas Input And Pressures

Gas supply pressure and manifold pressure with the
burners operating must be as specified on the rating
plate.

Checking Gas Pressure

Gas inlet pressure should be checked and adjusted in
accordance to the type of fuel being consumed.

To adjust the pressure regulator, remove the adjustment
screw or cover on the gas valve. Turn out (counterclock­wise) to decrease pressure, turn in (clockwise) to in­crease pressure. Only small variations in gas flow should
be made by means of the pressure regulator adjustment.
In no case should the final manifold pressure vary more
than plus or minus 0.3 inches water column from the
specified pressure. Any major changes in flow should
be made by changing the size of the burner orifices.

With Power And Gas Off:

1. Connect a water manometer or adequate gauge to
the manifold gas pressure tap of the gas valve.

As an alternative method, inlet gas pressure can also
be measured by removing the cap from the dripleg and
installing a predrilled cap with a hose fitting. (See Figure

17).

With Power And Gas On:

2. Put furnace into heating cycle and turn on all other
gas consuming appliances.

INLET GAS PRESSURE

Natural Min. 5.0" W.C., Max. 10.0" W.C.

Propane Min. 11.0" W.C., Max. 14.0" W.C.

Inlet Gas Pressure Must Not Exceed the Maximum Val­ues shown in Table Above.

If operating pressures differ from above, make neces­sary pressure regulator adjustments, check piping size,
etc., and/or consult with local utility.

Check The Gas Input (Natural Gas Only)

NOTE: On outdoor equipment, the gas input will vary

with the temperature of the gas. Rated input will be ob­tained at approximately 10° F. With warmer ambient and
gas temperatures, the input will decrease. Example: At
70° F the input will decrease 12%.

To measure the gas input using the gas meter proceed
as follows:

1. Turn off gas supply to all other appliances except
the furnace.

2. With the furnace operating, time the smallest dial on
the meter for one complete revolution. If this is a 2
cubic foot dial, divide the seconds by 2; if it is a 1
cubic foot dial, use the seconds as is. This gives the
seconds per cubic foot of gas being delivered to the
furnace.

3. INPUT=GAS HTG VALUE x 3600 / SEC. PER CU­BIC FOOT

Example: Natural gas with a heating value of 1000 BTU
per cubic foot and 34 seconds per cubic foot as deter­mined by Step 2, then:

Input = 1000 x 3600 / 0.34 = 106,000 BTU per Hour.
NOTE: BTU content of the gas should be obtained
from the gas supplier. This measured input must not
be greater than shown on the unit rating plate.

4. Relight all other appliances turned off in Step 1
above. Be sure all pilot burners are operating.

Figure 17

Measuring Inlet Gas Pressure

Alternate Method

Check The Manifold Pressure

A tapped opening is provided in the gas valve to facili­tate measurement of the manifold pressure. A U Tube
manometer having a scale range from 0 to 12 inches of
water should be used for this measurement. The mani­fold pressure must be measured with the burners oper­ating.

Check Main Burner Flame

Flames should be stable, soft and blue, (dust may cause
orange tips but they must not be yellow). They should
extend directly outward from the burner without curling,
floating or lifting off.

Check Temperature Rise

Check the temperature rise through the unit by placing
thermometers in supply and return air registers as close
to the furnace as possible. Thermometers must not be
able to see the furnace heat exchangers, or false read­ings could be obtained.

1. All registers must be open; all duct dampers must
be in their final (fully or partially open) position and
the unit operated for 15 minutes before taking read­ings.

2. The temperature rise must be within the range speci­fied on the rating plate.

NOTE: Air temperature rise is the temperature differ­ence between supply and return air.

20

With a properly designed system, the proper amount of
temperature rise will normally be obtained when the unit
is operated at rated input with the recommended blower
speed.

If the correct amount of temperature rise is not obtained,
it may be necessary to change the blower speed. A
higher blower speed will lower the temperature rise. A
slower blower speed will increase the temperature rise.

NOTE: Blower speed MUST be set to give the correct
air temperature rise through the furnace as marked on
the rating plate.

Important Note: If an installation uses a different blower
speed for cooling than is used for heating, do not set the
thermostat fan switch to ON (constant fan operation)
during the heating season without first confirming the
cooling fan speed will give a temperature rise within the
limits listed on the unit nameplate. Temperature rises
outside the limits listed could result in premature heat
exchanger failure.

Changing Blower Speeds (PGB Units)

WARNING

To avoid personal injury or death due to
electric shock, remove electrical power
from the unit before changing speed taps
on the blower motor.

A multi-speed motor is used in the furnace blower. It
provides easy speed selection for both heating and cool­ing air flow. Section II shows the CFM and E.S.P. rela­tionship for proper selection of heating and cooling
speeds. Cooling speed should be set for about 400 CFM
per ton cooling capacity.

Refer to the Wiring Diagram on the furnace to connect
the proper wires to the correct motor leads. All unused
motor leads must be taped or securely covered with wire
nuts.

Checking External Static Pressure

The total external static pressure must be checked on
this unit to determine if the airflow is correct.

Changing Blower Speeds (PGC Units)

WARNING

To avoid personal injury or death due to
electric shock, remove electrical power
from the unit before changing speed taps
on the blower motor.

PGC-B models include a BPM (brushless permanent
magnet) motor. Under identical conditions, it operates
at a lower power consumption than most PSC motors.
Within the allowable range of external static pressures,
the BPM motor will automatically adjust its RPM to de­liver the CFM listed in the blower performance table. As
static pressure increases, the RPM, current draw, and
operating sound level of the motor will also increase.
External static pressures in excess of those listed on
the nameplate may result in unsatisfactory operation,
equipment damage, and/or loss of warranty coverage.

The PGC-B models also include a speed tap board lo­cated on the blower housing. The speed tap settings
have been factory selected according to unit size and
performance. Field select taps are provided on the speed
tap board to assist the final installer. The ADJ. tap is
factory set for normal (NORM) operation. Three LED’s
are provided on the speed tap board. These lights indi­cate to the servicer which mode of operation the motor
is experiencing, that is Heating (W1), Fan Only (G) or
Cooling (Y and G).

Refer to the wiring diagram on the unit to verify speed
tap settings.

Check Limit And Fan Control

1. Check limit control (Figure 18) operation after 15
minutes of operation by blocking the return air
grille(s).

a. After several minutes the main burners must go

OFF. Blower will continue to run.

b. Remove air restrictions and main burners will re-

light after a cool down period of a few minutes.

2. Adjust the thermostat setting below room tempera­ture.

a. Main burners must go off.
b. Circulating Air Blower should continue to run briefly

until supply air temperature drops to approximately
90-100° F.

Fan and limit controls are preset at the factory. The con­trol is set for the fan to go off at 90-100° F:

NOTE: If necessary, adjust fan ON/OFF settings to ob­tain satisfactory comfort level. The fan comes on at ap­proximately 125° F.

WARNING

To avoid personal injury, property dam­age, fire, or premature failure of the heat
exchanger, do not adjust the limit con­trol, which is set at the factory.

21

Figure 18

Fan and Limit Control

CAUTION

This unit should not be used as a “con­struction heater” during the finishing
phases of construction on a new struc­ture. This type of use may result in pre­mature failure of the unit due to extremely
low return air temperatures and exposure
to very dirty atmospheres.

WARNING

To avoid personal injury or death, always
disconnect electrical power before in­specting or servicing the unit. All com­pressor protection devices reset auto­matically, energizing the contactor and
outdoor fan.

Short Cycle Protector (Figure 19)

The short cycle protector is located in the blower com­partment. Each time the compressor shuts off for any
reason, the short cycle protector will open. It will take
about 3 to 4 minutes before the short cycle protector will
reset and allow compressor startup to occur.

All wiring connected to the short cycle protector is 24V.
If the compressor cycles on the short cycle protector
without cycling on any of the other compressor protec­tion devices and before the call for cooling ends, com­mon causes include:

• Interruption of the line voltage power.

• Improper thermostat installation, defective thermo-

stat wiring, or defective thermostat.

• Rapid adjustments of the room thermostat.

To Turn Off Unit

1. Set the thermostat to lowest setting.

2. Turn off the electrical power supply to the furnace.

3. Remove the right hand door on the front of the fur­nace by removing screws.

4. Turn the gas control valve knob to the OFF position.
Do not force. See Figure 16.

5. Close manual gas shutoff valve external to the fur­nace.

6. Replace the door on the unit.

7. If cooling and/or air circulation will be desired, turn
ON the electrical power.

Cooling Startup
Compressor Protection Devices

The PGC and PGB includes components which are de­signed to protect the compressor against abnormal op­erating conditions. These include the short cycle pro­tector, external compressor protector (PGC24-42, 60 and
PGB58 only), and high pressure cutout.

These controls reset automatically. Excessive cycling
of the controls should be investigated before continuing
operation.

(NOTE: The operation of the indoor blower will not be
affected by any of the above compressor protection de­vices.)

Short Cycle

Protecto r

Figure 19

Short Cycle Protector Location

High Pressure Cutout (Figure 20)

An automatic reset high pressure control is located in
the compressor discharge line. (See Figure 20) This
control protects the unit from excessively high refriger­ant pressure.

High pressures can result from:

• Inoperative outdoor fan motor.

• Outdoor coil restricted with debris.

• Recirculation of hot condenser air.

• Overcharge of refrigerant.

22

Important Note: Never close the compressor suction
line to test its pumping efficiency. This will seriously dam­age the compressor and void its warranty.

• The compressor may run backwards (noisy opera-

tion) for 1 or 2 seconds at shutdown. This does not
harm the compressor.

• These scroll compressors have copper plated steel

suction tubes. If removal and reconnection becomes
necessary, use silfos with minimum 5% silver or sil­ver braze material with flux.

• Operating pressures and current draws may differ

from standard reciprocating compressors. See Sec­tion XV for typical cooling performance data.

Reciprocating Compressor

The PGC48 includes a reciprocating compressor with a
crankcase heater. See the caution for the PGC48 be­fore starting cooling operation.

CAUTION

To avoid severe personal injury or fire,
refrigerant must be removed from both
the low and the high pressure sides of
the system before heat is applied.

Figure 20

High Pressure Protection Devices

Scroll Compressors

PGC 24, 30, 36, 42, 60, and PGB58 units include scroll
compressors. The installer and servicer should be aware
of the following differences between scroll compressors
and reciprocating compressors:

• These scroll compressors include a thermostat (ex-

ternal compressor protector) mounted to the top of
the compressor. THIS PROTECTIVE DEVICE
SHOULD NEVER BE BYPASSED FOR ANY PUR­POSE.

• On a scroll compressor, due to its inherent ability to

handle liquid refrigerant, a crankcase heater is not
required.

CAUTION

To avoid severe personal injury or fire,
refrigerant must be removed from both
the low and the high pressure sides of
the system before heat is applied.

• The scroll compressors use white oil which is com-

patible with 3GS. If the addition of oil in the field is
required, 3GS may be used .

Operating Instructions (cooling)

CAUTION

On PGC48 Only: To avoid damage to the
compressor, engage the electrical dis­connect switch to the compressor unit
four hours prior to operating air condi­tioner after the electrical disconnect is off
for a prolonged period of time (during
vacation, etc.). This time lapse allows the
compressor crankcase to attain a proper
operating temperature.

(NOTE: Mechanical cooling cannot be reliably provided
at ambient temperatures below 50° F. If low ambient
cooling will be required a downflow economizer is avail­able. See Section XIV.)

1. Turn on the electrical power supply to the unit.

2. Place the room thermostat selector switch in the
COOL position (or AUTO if available, and if auto­matic changeover from cooling to heating is desired).

3. Set the room thermostat to the desired temperature.

23

XIII. Maintenance

WARNING

To avoid personal injury or death due to
electrical shock, disconnect electrical
power before performing any mainte­nance.

Important Note: Touching the ignitor body with bare fin­gers, rough handling, or vibration could result in early
ignitor failure. Only a qualified servicer should ever
handle the ignitor.

Have the furnace checked at least once a year before
the heating season begins, to be sure that the combus­tion air inlet and flue outlet hoods are not blocked by
debris, which would prevent adequate combustion air
and a properly operating vent system.

Replacing Or Cleaning Filter

A return air filter is not supplied with this unit; however,
there must be a means of filtering all of the return air.
The filter(s) may be located in the return air duct(s), re­turn air filter grille(s) or in the filter rack in the unit. Con­sult with your installing dealer for the actual location of
the return air filter(s) for your unit.

Dirty filters are the most common cause of inadequate
heating or cooling performance. Filter inspection should
be made at least every two months; more often if nec­essary because of local conditions and usage.

Dirty throwaway filters should be discarded and replaced
with a new, clean filter. Dirty permanent filters should be
washed with water, thoroughly dried and sprayed with a
filter adhesive before being reinstalled. (Filter adhesives
may be found at many hardware stores.) Permanent fil­ters should last several years. However, should one
become torn or uncleanable, it should be replaced.

If the installation has the return air filter located in the
unit filter rack and it must be replaced, use the appropri­ate Amana filter or a permanent filter that is properly
sized as follows:

When installing a new filter or reinstalling an old one,
always make certain the air flow arrows on the filter point
in the proper direction. If using the unit filter rack, the
airflow arrows must point toward the indoor blower.

To inspect the filter in the filter rack, proceed as follows:

1. Disconnect power to the unit.

2. Locate the filter access door (Figure 9) and remove
the four sheet metal screws.

3. Pull out the filter and inspect. Clean or change as
necessary.

4. Insert the filter into the filter rack channels and lower
into place. Make sure the filter slides completely to
the bottom so no part of the filter is left outside the
back panel.

5. Return the filter access door to its original position
and secure it with the four sheet metal screws.

6. Reconnect the power.

Maintaining Cabinet Finish

Use a fine grade automotive wax on the cabinet finish to
maintain the original high luster. This is especially im­portant in areas with high ultraviolet radiation.

Clean Outside Coil (Qualified Servicer Only)

The coil with the outside air flowing over it should be
inspected annually and cleaned as frequently as neces­sary to keep the finned areas free of lint, hair and de­bris.

Blower Motor

The air circulating blower motor bearings are perma­nently lubricated.

Model Amana Part #

PGC24, 30, or 36 C4855623 26" X 20" X 1"

PGC42, 48, 60

or PGB58

C4855627 32-5/8" X 22-3/8" X 1"

Required Permanent

Filter Size

Figure 21

Blower Motor and Housing

(NOTE: Brushless Permanent Magnet (BPM) blower mo­tors are permanently lubricated and do not have oil ports.
Oil cannot be added to these motors.

Induced Draft Motor Lubrication

The induced draft motor is permanently sealed and does
not require additional oiling.

24

Flame Sensor (Qualified Servicer Only)

Under some conditions, the fuel or combustion air sup­ply can create a nearly invisible coating on the flame
sensor. This coating acts as an insulator causing a drop
in the flame sensing signal. If this occurs, a qualified
servicer should carefully clean the flame sensor with
emery cloth or steel wool. After cleaning, the microamp
signal should be in the range listed in Table 1A.

Figure 22

Induced Draft Motor

Condenser Fan Motor Lubrication

The condenser fan motor bearings are permanently lu­bricated and do not require additional lubrication.

Ignitor (Qualified Servicer Only)

If the ignitor and the surrounding air are at about 70° F
and the ignitor wires are not connected to any other elec­trical components, the resistance of the ignitor should
not exceed 200 ohms. If it does, the ignitor should be
replaced.

Compressor

The compressor motor is permanently lubricated and
hermetically sealed. It does NOT require oiling.

Flue Passages

At the start of each heating season, inspect, and if nec­essary clean the furnace flue passages.

Cleaning Flue Passages (Qualified Servicer Only)

1. Shut off electric power and gas supply to the fur­nace.

2. Remove burner assembly and disconnect the gas
line and remove the manifold brackets from the par­tition panel.

3. Remove the induced draft blower and the collector
box from the partition panel.

4. Remove tube inserts and turbulators from heat ex
changer.

5. The primary heat exchanger tubes can be cleaned
using a round wire brush attached to a length of high
grade stainless steel cable, such as drain cleanout
cable. Attach a variable speed reversible drill to the
other end of the spring cable. Slowly rotate the cable
with the drill and insert it into one of the primary heat
exchanger tubes. While reversing the drill, work the
cable in and out several times to obtain sufficient
cleaning. Repeat for each tube.

6. When all heat exchanger tubes have been cleaned,
replace the parts in the reverse order in which they
were removed.

7. To reduce the chances of repeated fouling of the
heat exchanger, perform the steps listed in Startup
and Adjustment, Section XII.

Figure 23

Removal of Fan Motor

25

Burners

WARNING

To avoid personal injury or death due
to electrical shock, do not remove any
internal compartment covers or attempt
any adjustment. Contact a qualified ser­vicer at once if an abnormal flame ap­pearance should develop.

At least once a year, prior to or during the heating sea­son, make a visual check of the burner flames.

NOTE: This will involve removing and reinstalling the
right front door on the unit, which is held by several
screws. If you are uncertain about your ability to do
this, contact a qualified servicer.

If a strong wind is blowing, it may alter the airflow pat­tern within the furnace enough that an inspection of the
burner flames is not possible.

The inspection of the burner flames must be performed
with the heat shield in place. Only a qualified servicer
should ever remove the heat shield from the manifold
assembly.

For further information on the yearly inspection, con­sult the User Manual. It is recommended that a quali­fied servicer inspect and service the unit at least once
each year.

Turn the furnace on at the thermostat. Wait a few min­utes, since any dislodged dust will alter the normal flame
appearance. Flames should be predominantly blue and
directed into the tubes. They should not be yellow. They
should extend directly outward from the burner ports
without curling downward, floating or lifting off the ports.

XIV. Accessories and Functional
Parts

Accessories

Additional Amana accessories can be purchased to fit
specific application needs. Accessories can be ordered
by description in Table 5. Each accessory includes its
own separate instructions.

Pre ssure Drop of Tra nsition Kit

Model

PDTROU3A
PDTROU5A

700 900 1200 1400 1600 1800

0.07 0.11 0.19

--- --- --- 0.06 0.08 0. 10

CFM

--- --- ---

Table 6

Transition Kit Pressure Drop

Replacement Parts

1. Refer to the description in Table 7 when ordering any
of the listed functional parts. Be sure to provide the fur­nace model, manufacturing, and serial numbers with the
order.

Gas Valve BPM Blower Motor (PGC)

Heat Exchanger Blower Motor (PGB)

Gas Orifice, Natural Pressure Switch Hose

Evaporator Coil Induced Draft Blower

Gas Orifice, Propane Time Delay Relay

Transformer Blower Relay (PGB)

Burner Compressor

Ignitor Pressure Switch

Combustion Relay Contactor

Flame Sensor Flame Roll-Out Switch
Blower Wheel Condenser Fan Blade

Ignition Control High Pressure Cutout

Blower Housing Condenser Fan Motor

Fan /Limit Switch Compressor Time Delay

Speed Tap Board (PGC) Condenser Coil

Table 7

Functional Parts List

2. Although only functional parts are shown in Table 7,
all sheet metal parts, doors, etc. may be ordered by de­scription or by referring to the Parts Manual.

3. Parts are available from your Amana distributor.

Transition Kit

Accessory

Duct Transit i on Round

Duct Transit i on Over/Under

Rooftop Curb

Downflow Economi z er

Fresh Air Intake

Baromet ri c Rel ief Hood

50° F Compressor Loc k out

Am b i ent Thermostat Kit

Em ergenc y Heat Relay

Circ u i t Breaker Kit

Elect ric Heat K i t

Table 5

Accessory List

26

XV. Typical Cooling Performance Data

Outdoor Indoor PGC24 PGC30 PGC36

Air Temp.

at

Condenser

Inlet

(Dry Bulb)

° F. ° F. ° F. PSIG PSIG Amps ° F. PSIG PSIG Amps ° F. PSIG PSIG Am ps

115 72 12 91 324 12. 7 12 89 322 15. 9 12 87 352 19. 4

110 72 12 90 304 12. 1 12 88 303 15. 1 12 87 332 18. 5

105 72 12 90 286 11. 6 12 88 285 14. 5 12 86 310 17. 6

100 72 12 89 269 11. 1 12 87 267 13. 9 12 85 293 16. 9

95 72 13 88 251 10.6 13 86 249 13.3 13 85 274 16.1

90 72 13 88 236 10.2 13 86 232 12.8 13 84 255 15.4

85 72 13 87 221 9.8 13 85 217 12.4 13 83 238 14.8

80 72 13 86 203 9.3 13 84 203 12.0 13 83 223 14.2

75 72 13 86 189 9.0 13 84 189 11.6 13 82 207 13.7

Air

Temp.

at Evap.

Inlet

(Wet Bulb)

A B CDE B CDE B CDE

77 7 92 325 12. 8 7 89 320 15.8 7 88 351 19.3

67 17 91 324 12.7 17 88 322 15.8 17 87 352 19.3
62 23 90 326 12.8 23 87 322 15.8 23 86 352 19.3
77 7 91 308 12. 2 7 89 304 15.2 7 87 332 18.5

67 17 80 304 12.1 17 88 303 15.1 17 86 331 18.4
62 23 89 304 12.1 23 87 302 15.1 23 85 329 18.4
77 7 90 288 11. 7 7 88 285 14.5 7 86 311 17.6

67 18 89 286 11.6 18 87 283 14.5 18 85 312 17.6
62 23 88 286 11.6 23 86 282 14.4 23 84 311 17.6
77 8 89 269 11. 1 8 87 267 13.9 8 86 293 16.9

67 18 89 271 11.2 18 86 267 13.9 18 85 292 16.8
62 23 88 271 11.2 23 85 267 13.9 23 84 290 16.7
77 8 89 255 10. 7 8 87 251 13.4 8 85 275 16.2

67 18 88 252 10.7 18 86 249 13.3 18 84 274 16.1
62 23 87 254 10.7 23 85 249 13.3 23 83 274 16.1
77 8 88 237 10. 2 8 86 234 12.9 8 84 255 15.4

67 18 87 234 10.2 18 86 231 12.8 18 83 256 15.4
62 24 86 235 10.2 24 84 231 12.8 24 83 254 15.4
77 8 87 222 9.8 8 86 217 12. 3 8 84 240 14.8

67 18 86 221 9. 8 18 84 216 12.3 18 83 238 14.7
62 24 86 220 9. 8 24 83 216 12.3 24 82 239 14.8
77 8 87 203 9.3 8 85 202 11. 9 8 83 224 14.3

67 18 86 205 9. 4 18 84 202 11.9 18 82 221 14.2
62 24 85 206 9. 4 24 83 202 11.9 24 81 221 14.2
77 8 86 189 9.0 8 84 189 11. 6 8 83 208 13.7

67 19 85 191 9. 0 19 83 189 11.6 19 82 207 13.7
62 24 85 190 9. 0 24 82 187 11.6 24 81 206 13.6

Indoor

Air Temp.

Difference

Betw e en
Coil Inlet

and Outlet

Pressure @ Unit

Gauge Fitti ng s

Low
Side

High
Side

Amps

Total to

Unit

Indoor

Air Temp.

Difference

Betw e en
Coil Inlet

and Outlet

Pressure @ Unit

Gauge Fitti ng s

Low
Side

High
Side

Amps

Total to

Unit

Indoor

Air Temp.

Difference

Betw e en
Coil Inlet

and Outlet

Pressure @ Unit

Gauge Fitti ng s

Low
Side

High
Side

Amps

Total to

Unit

A Columns - All data based on indoor dry bulb of 80° F and rated air flow. As indoor dry bulb temperature increases, a slight increase wil
B Columns - A properly operating unit should be within ±3° F of the typical (dry bulb) value shown.

C Columns - A properly operating unit should be within ±3 PSIG of the typical value shown.
D Columns - A properly operating unit should be within ±7 PSIG of the typical value shown.
E Columns - A properly operating unit should be within ±2 amps of the typical value shown.

between inlet and outlet. Low and high side pressures and power will not change.

Table 8A

27

l occur in indoor air temperature differential

Outdoor Indoor PGC42 PGC48 PGC60 and PGB58

Air Temp.

at

Condenser

Inlet

(Dry Bulb)

° F. ° F. ° F. PSIG PSIG Amps ° F. PSIG PSIG Amps ° F. PSIG PSIG Amps

115 72 12 85 331 23.1 13 88 327 23.8 15 83 342 34.8

110 72 13 85 313 22.2 13 87 308 23.2 15 82 322 33.2

105 72 13 84 293 21.2 13 86 290 22.5 15 81 303 31.8

100 72 13 83 276 20.4 13 86 273 21.9 15 80 285 30.4

95 72 13 82 258 19.6 13 85 257 21.2 16 80 267 29.2

90 72 13 82 241 18.8 14 84 240 20.6 16 79 250 28.0

85 72 13 81 224 18.1 14 83 225 20.0 16 78 234 26.9

80 72 13 81 210 17.5 14 82 210 19.4 16 78 218 25.9

75 72 14 80 196 16.9 14 82 196 18.8 16 77 203 24.9

A Columns - All data based on indoor dry bulb of 80° F and rated air flow. As indoor dry bulb temperature increases, a slight increase wil
B Columns - A properly operating unit should be within ±3° F of the typical (dry bulb) value shown.

C Columns - A properly operating unit should be within ±3 PSIG of the typical value shown.
D Columns - A properly operating unit should be within ±7 PSIG of the typical value shown.
E Columns - A properly operating unit should be within ±2 amps of the typical value shown.

Air

Temp.

at Evap.

Inlet

(Wet Bulb)

A BCDEBCDEBCDE

77 7 86 332 23.1 8 88 327 23.8 9 83 343 34.9

67 18 85 332 23.1 18 88 327 23.8 21 82 342 34.7
62 23 84 332 23.2 24 87 326 23.7 26 81 341 34.6
77 8 85 313 22.2 8 88 308 23.2 10 82 323 33.3

67 18 84 312 22.1 18 87 308 23.1 21 81 322 33.2
62 23 83 311 22.1 24 86 307 23.1 27 80 321 33.1
77 8 84 294 21.3 8 87 291 22.5 10 82 303 31.8

67 18 83 294 21.3 18 86 290 22.5 21 80 303 31.8
62 23 82 293 21.2 24 85 290 22.4 27 80 302 31.7
77 8 84 277 20.4 8 86 274 21.9 10 81 285 30.5

67 18 83 275 20.4 19 85 273 21.8 21 80 285 30.5
62 24 82 274 20.3 24 84 272 21.8 27 79 284 30.4
77 8 83 259 19.6 8 85 256 21.3 10 80 268 29.2

67 18 82 257 19.5 19 84 256 21.2 22 79 267 29.2
62 24 81 256 19.5 25 84 255 21.1 28 78 266 29.1
77 8 82 241 18.8 8 84 240 20.6 10 79 251 28.1

67 19 81 240 18.8 19 83 240 20.6 22 78 250 28.0
62 24 80 240 18.8 25 83 239 20.5 28 77 249 27.9
77 8 82 226 18.1 9 84 225 20.0 11 79 234 27.0

67 19 81 225 18.1 19 83 224 20.0 22 78 233 26.9
62 24 80 223 18.0 25 82 224 19.9 28 77 232 26.8
77 8 81 211 17.5 9 83 200 19.4 11 78 218 25.9

67 19 80 211 17.5 20 82 209 19.4 22 77 218 25.9
62 24 79 208 17.4 25 81 209 19.3 28 76 217 25.8
77 9 80 196 16.9 9 82 196 18.8 11 78 204 25.0

67 19 79 194 16.8 20 81 195 18.8 22 76 203 24.9
62 25 79 194 16.8 25 80 195 18.8 28 76 202 24.8

between inlet and outlet. Low and high side pressures and power will not change.

Indoor

Air Temp.

Difference

Between

Coil Inlet

and Outlet

Pressure @ Un it

Gauge Fi t tings

Low
Side

High
Side

Amps

Total to

Unit

Indoor

Air Temp.
Difference

Between

Coil Inlet

and Outlet

Pressure @ Un it

Gauge Fi t tings

Low
Side

High
Side

Amps

Total to

Unit

Indoor

Air Temp.

Difference

Between

Coil Inlet

and Outlet

l occur in indoor air temperature differential

Pressure @ Un it

Gauge Fi t tings

Low
Side

High
Side

Amps

Total to

Unit

Table 8B

28

XVI. Wiring Diagram

PGC24 - 36

29

PGC 4231PGC 48

30

PGC 60

CONT

ACTOR (CC

GAS

CMP

YL-11

GY-25

208 VOLT INSTALLATION

VALVE

IGNITION CONTROL

(TERMINAL ORDER REARRANGED)

VALVE

21
3

PRESSURE

SWITCH (PS)

NC
NO

TRANSFORMER

COM

MOVE BK23 AND BK33 WIRES FROM TRANSFOR MER

FOR PROPER OPERATION ON 208 VOLT THE

FOLLOWING CHA NGES MUST BE MADE:

L

GND

T

R

T

R

IGN
IGN

L

R2

BK

ROLLOUT

LIMIT (RL)

TERMINAL

BOARD

BR-22

GY-20

BU-10

RD-1

BR-21

CWGRY

R1

SHORT CYCLE

Y1

PROTECTOR (SCP)

OR

-8
BU

COMB

BLOWER

BK

RD

(208V)

GY-80

-1

BK

-14

Y2

YL

-3

RD

-18
RD

-19
VT-37

)

L1

BK-13

T1

GY-70

BK

-1

RD

-1

L2

T2

VT(COM)

(230V)

Ø

L2 L1

FIELD CONNECTION

208/240 VAC 1

GND

WARNING:C 1%

!

GND

DISCONNECT POWER

BR BROWN

WH WHITE

BU BLUE

GY GRAY

RD RED

COLOR CODE

YL YELLOW

OR ORANGE

11160801 REV. 0

BEFORE SERVICING

LOW VOLTAGE

LOW VOLTAGE FIELD

HI VOLTAGE

HI VOLTAGE FIELD

VT VIOLET

GN GREEN

BK BLACK

BK-14

YL-4

BU-29

OR

COM

OR-16

GY-35

RD-1

VT

-47VT-47

208

LINE

240

LOAD

BR-21

GY-30

OR-49

SECO N D ARY LIMIT

TH

GND

VALVE

OR-19

240 TERMINAL TO 208 TERMINAL.

UNPLUG RED COMBUSTI O N BL OWER LEAD FROM

COMBUSTION RELAY NUMBER 6 TERMINAL.

ATTACH BLACK BLOWER LEAD TO TERMINAL.

TAPE UNUSED RED LEAD.

2

RL

GAS

VALVE

SEC

H

S

IGNITOR

1

LIMIT

NO

FL

PS

NC

FLAME

SENSOR

7

8

FLAME

SENSOR

RS

C

-15

COMBUSTION

RELAY (CR)

65

IGNITOR

RD-23

RD-22

BK-33

L2

L1

IGN

IGN

IGNITION

CONTROL

C

Y

8

CR
7

TAP BO A R D

RGW

CR

35

G

W

3

4

BK-23

RD-18

(FC)

SCP

Y2 R2

1

2

RD-10

COM

BK-27

RD-19

APA

C

RD-10

R

CS

YL

-12

HERM

I

T

C

GY-40

VT-20VT-20

VT-20

BU

WIRING

Ø

1

COMPRESSOR

WARNING: DISCONNECT POWER BEFORE SERVICING.

READ BEFORE OPERATING OR SERVICING THIS UNIT.

HIGH PRESS

BU

FAN

O

R

(1)

TAP

BOARD

IMPORTANT:

(2)

(3)

(4)

!

2. AMANA APPROV ED R EPLACEMENT PARTS MUST BE

1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT

AT 0.8 AMPS.

(5)

(6)

(7)

(8)

(9)

(10)

4. EQUIPPED FOR 230 VOLT, FOR 208 VOLT SEE

INSTRUCTIONS AT TOP OF THIS DIAGRAM.

MUST BE USED.USE COPPER CONDUCTORS ONLY.

USED WHEN SERVICING.

(11)

(12)

(13)

(14)

(15)

(16)

OR-8

YL

GY-40

BU-2

VT-37

CONTROL

FAN LIMIT

(FL)

YL-11

CC

R1 Y1

HIGH

PRESS

FC

Y

-4

**
*

TAP BOARD

CYGWR

SEE

DETAIL

HARNESS

AIR

CIRCULATION

BK-1

BR-11

BK-27

FAN

O.D.

MOTOR

(ACB)

BLOWER

RD-1

GN-1

COMB

BLOWER

COM

24 V

208

(230 V)

(208 V)

230

X'FMR

RC

CR

46

GY-1

BU-2

GY-3

YL-5

YL-6

YL-7

YL-8

BU-9

YL-11

RD-12

OR-15

HARNESS

DETAIL

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

** COOL

(11)

TAP

(ACB)

AA

* HEAT

TAP

MODEL NO.

FACTORY WIRED

MOTOR CONNECTI ONS

PGC60B0902A

C

COMP

S

R

OD

ICM

FAN

CAP

FAN

COM

HERM

CC

T1 T2

YL-16

(12)

(13)

(14)

(15)

(16)

BA

PGC60B1352A

GND

WARNING:

DISC ONNECT POWER B EFORE SERVI CING.

!

L1 L2

32

PGB 58

CMP

YL-11

GY-25

GAS

VALVE

21
3

BU-10

PRESSURE

SWITCH

NC

NO

TRA NSFOR MER

L1

ROLLOUT

LIMIT

(RL)

TERMINAL

BOARD

RD-1

BR-22

RD

OR

BR-21

GY-20

CWGRY

(PS)

OR-16

COM

GY-35

BU-51O

RD-1

VT

-47

208240

LINE

COM

LOAD

FAN

TIME

(FD)

DELAY

H

H

1

-41

-8
BU

COMB

BLOWER

GY-80

RD

BK

(230V)

(208V)

OR

-15

7

COMBUS TI ON

RELAY (CR)

8

6

GY

1

(FR)

FAN RELAY

3

BK

GY

-45

3

VT-37

BU

-51

GY-70

BU-29

1

5

3

4

2

-45

5

24

L2

L1

T1

CONTACTOR

YL-3

(CC)

T2

VT-20

-10

RD

S

R

C

RD-10

YL

-12

BK-23O BK-13O

-23

VT-37

COM

BK-27

CAPACITOR

FAN

HERM

L2

BR BROWN

WH WHITE

BU BLUE

GY GRAY

GND

WARNING:

FIELD CONNECTION

208/240 VAC 1ø

!

DISCONNECT

POWER

BEFORE

SERVICING

COLOR CODE

VT-27

GND

CYCLE

SHORT

PROTECTOR

Y1Y2R1

(SCP)

11161001 REV. 0

R2

BK

-1

RD RED

LOW VOLTAGE

LOW VOLTAGE FIEL D

HI VOLTAGE

HI VOLTAGE FIELD

YL YELLOW

OR ORANGE

VT VIOLET

GN GREEN

BK BLACK

VT (COM)

BK-14

BU

VT-20

HIGH PRESS

BU

1ø WIRING

COMPRESSOR

IMPORTANT:

READ BEFORE OPERATING OR SERVICING THIS UNIT.

WARNING: DISCONNECT POWER BEFORE SERVICING.

!

5. EQUIPPED FOR 230 VOLT, FOR 208 VOLT SEE

INSTRUCTIONS AT TOP OF THIS DIAGRAM.

3. IF ANY ORIGINAL WIRE IS REPLACED, 105° C WIRE

MUST BE USED.USE COPPER CONDUCTORS ON LY.

2. AMANA APPR OVED REPLACEMENT PARTS MUST BE

USED WHEN SERVICING.

1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT

AT 0.8 AMPS.

4. WIRE NUT AND TAPE UNUSED MOTOR LEADS.

FOR PROPER O PERAT ION ON 208 VOLT THE

FOLLOWING CHANGES MUST BE MADE:

208 VOLT INSTALLATION

GND

T

VALVE

IGN
IGN

IGNITION CONT ROL

(TERMINAL ORDER REARRANGED)

IGNITOR

BU

-2

GY-40

FLAME

SENSOR

*

GY-30

BR-21

OR-49

SECONDARY LIMIT

TH

VALVE

RD-23

RD-22

BK-33

L2

RS

L1

IGN

GND

IGN

VT-14

RD-18

FAN LIMIT

RD-2 4 L O

CONTROL

**

BK-27

VT-20

BR-11

BK-26 HI

BU-23 MED

AIR

BLOWER

CIRCULA TI ON

FAN

O.D.

MOTOR

(ACB)

VT-27O

IGNITION

CONTROL

OR-19

MOVE BK23 AN D BK3 3 WIRES FROM TRANSFORMER

240 TERMINAL TO 208 TERMINAL.

UNPLUG RED COMBUSTION BLOWER LEAD FROM

COMBUSTION RELAY NUMBER 6 TERMINAL.

ATTACH BLACK BLOWER LEAD TO TERMINAL.

TAPE UNUSE D RED LEAD.

L

2

R

RL

T

H

R

S

L

1

GAS

VALVE

SEC

LIMIT

FL

FLAME

SENSOR

IGNITOR

8

FRHH

CR7

NO

C

PS

NC

CR

35

G

W

(FC)

(FL)TUTN

BR-25

VT-14

YL-11

FACTORY WIRED MOTOR CONNECTIONS

CAPACITOR

CAP

CC

FR31

SCP

Y2 R2

R1 Y1

YDNSO

HIGH

PRESS

24 V

FD

13

RC

COMB

BLOWER

COM

208

(230 V)

(208 V)

230

X'FMR

CR

46

ACB

HI

LO

MED

*

FC

* *

2

5

FR

4

COMP

R

OD

FAN

CAP

FAN

COM

HERM

HI BLACK 26BLUE 23

** COOLING BLOWER SPEED

RED 24 HI BLACK 26

RD-18 TO MOTOR WIRE SPEED BL-2 TO MOTOR WI RE

LOW

MED

SPEED

* HEAT ING BLOWER S P EED

3

3

MOTOR

SPEEDS

MODEL NO.

PGB58B135 HI HI BLACK 26BLACK 263

PGB58B090

PGB58B115

C

S

GND

WARNING:

DISCONNECT POWER BEFORE SERVICING.

CC

T1 T2

!

L1 L2

33