Daikin DP3G Series User manual

1
Ax this manual and
Users Information Manual adjacent to the unit.
DP3G 13.4 SEER2 “M” SERIES With R-410A
Single PAckAge gAS-electRic heAting & cooling Unit
O NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL , ADJUST , SERVICE OR
REPAIR ( HEREINAFTER , “ SERVICE ”) THE EQUIPMENT SPECIFIED IN THIS
MANUAL SHOULD SERVICE THE EQUIPMENT . T HE MANUFACTURER WILL NOT
BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR
SERVICE PROCEDURES . I F YOU SERVICE THIS UNIT , YOU
ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY
RESULT . I N ADDITION , IN JURISDICTIONS THAT REQUIRE ONE OR
MORE
LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL , ONLY
LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT . I MPROPER
INSTALLATION , ADJUSTMENT , SERVICING OR REPAIR OF THE EQUIPMENT
SPECIFIED IN THIS MANUAL , OR ATTEMPTING TO INSTALL , ADJUST , SERVICE OR
REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER
TRAINING MAY RESULT IN PRODUCT DAMAGE , PROPERTY DAMAGE , PERSONAL
INJURY OR DEATH .
INSTALLATION INSTRUCTIONS
These installation instructions cover the outdoor installation
of self contained package air conditioners and heating units.
See the Specication Sheets applicable to your model for
information regarding accessories.
*NOTE: Please contact your distributor or our website for
the applicable Specication Sheets referred to in this manual.
This Forced Air Central Unit Design Complies With Require-
ments Embodied In The American National Standard / Na-
tional Standard of Canada Shown Below.
ANSI Z21.47•CSA-2.3 Central Furnaces.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
Our continuing commitment to quality products may mean a change in specications without notice.
19001 Kermier Road, Waller, TX 77484
www.daikincomfort.com
©2022
IOD-3024
06/2022
WARNING
DO NOT BYPASS SAFETY DEVICES

2
Index
REPLACEMENT PARTS..................................................................... 3
ORDERING PARTS .................................................................. 3
SAFETY INSTRUCTIONS................................................................... 3
TO THE INSTALLER.................................................................. 3
GENERAL INFORMATION................................................................ 5
TRANSPORTATION DAMAGE ................................................. 5
UNIT LOCATION .............................................................................. 6
ALL INSTALLATIONS: .............................................................. 6
GROUND LEVEL INSTALLATIONS ONLY: ................................. 6
ROOFTOP INSTALLATIONS ONLY:........................................... 6
ROOF CURB INSTALLATIONS ONLY: ....................................... 7
RIGGING DETAILS............................................................................ 7
GAS PIPING ..................................................................................... 7
 .......... 8
PIPING.................................................................................... 8
GAS PIPING CHECKS .............................................................. 9
PROPANE GAS INSTALLATIONS ...................................................... 9
TANKS AND PIPING................................................................ 9
ELECTRICAL WIRING..................................................................... 10
THERMOSTAT LOCATION ..................................................... 10
  ......... 10
UNIT VOLTAGE...................................................................... 11
CIRCULATING AIR AND FILTERS.................................................... 11
AIRFLOW CONVERSION ....................................................... 11
DUCTWORK.......................................................................... 12
FILTERS ................................................................................. 12
VENTING ....................................................................................... 12
FLUE HOOD INSTALLATION.................................................. 12
  ............................... 12
 ............. 13
CONDENSATE DRAIN .................................................................... 13
CONDENSATE DRAIN CONNECTION .................................... 13
NORMAL SEQUENCE OF OPERATION........................................... 13
HEATING............................................................................... 13
COOLING .............................................................................. 14
FAN ONLY ............................................................................. 14
STARTUP, ADJUSTMENTS, AND CHECKS....................................... 14
HEATING STARTUP .............................................................. 14
GAS SUPPLY PRESSURE MEASUREMENT............................. 15
GAS MANIFOLD PRESSURE MEASUREMENT
AND ADJUSTMENT............................................................... 16
COOLING STARTUP .............................................................. 19
CHECKING SUBCOOLING ..................................................... 19
CHECKING SUPERHEAT ........................................................ 19
TROUBLESHOOTING ..................................................................... 20
IGNITION CONTROL ERROR CODES..................................... 20
ABNORMAL OPERATION - HEATING.................................... 20
ABNORMAL OPERATION - COOLING ................................... 22
MAINTENANCE ............................................................................. 22
FILTER REPLACEMENT OR CLEANING ................................. 22
CABINET FINISH MAINTENANCE......................................... 22
  .......... 22
CONDENSER, EVAPORATOR,
 ..................................... 22
 ..................... 22
  .................... 22
CLEANING FLUE PASSAGES
  ........................................... 23
 .......... 23
CLEANING BURNERS............................................................ 23
ACCESSORIES AND FUNCTIONAL PARTS...................................... 23
SHEET METAL ACCESSORIES ............................................... 23
FUNCTIONAL PARTS............................................................. 24
GENERAL INFORMATION..................................................... 24
BLOWER PERFORMANCE DATA .................................................... 25
IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
 .................................................... 29
HEATING TIMING CHART.............................................................. 29
COOLING TIMING CHART ............................................................. 29
IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
........................................................ 30
HEATING TIMING CHART.............................................................. 30
COOLING TIMING CHART ............................................................. 30
 ..................................................................................... 31
UNIT DIMENSIONS............................................................... 31
WIRING DIAGRAMS...................................................................... 32
HOMEOWNER’S ROUTINE MAINTENANCE.................................. 44
 ........................................................................... 45

3
REPLACEMENT PARTS
Ordering Parts
When reporting shortages or damages, or ordering repair parts,
give the complete unit model and serial numbers as stamped
on the unit’s nameplate.
Replacement parts for this appliance are available through your
contractor or local distributor. For the location of your nearest
distributor, consult the white business pages, the yellow page
section of the local telephone book or contact:
HOMEOWNER SUPPORT
DAIKIN NORTH AMERICA LLC
19001 KERMIER ROAD
WALLER, TEXAS 77484
855-770-5678
SAFETY INSTRUCTIONS
To The Installer
Before installing this unit, please read this manual to familiarize
yourself on the specic items which must be adhered to,
including maximum external static pressure to unit, air
temperature rise, minimum or maximum CFM and motor speed
connections.
Keep this literature in a safe place for future reference.
WARNING
SHOULD OVERHEATING OCCUR OR T HE GAS S UPPLY FAIL T O SHUT OFF, TURN
OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO T HE F URNACE BEFORE
TURNING OFF THE ELECTRICAL S UPPLY.
WARNING
TO AVOID PROPERTY D AMAGE, P ERSONAL INJURY O R DEATH, D O NOT USE
THIS U NIT IF ANY PART HAS BEEN UNDER WATER. IMMEDIATELY CALL A
QUALIFIED SERVICE TECHNICIAN T O INSPECT THE FURNACE AND T O REPLACE
ANY PART O F THE CONTROL SYSTEM A ND A NY G AS CONTROL H AVING BEEN
UNDER WATER.
WARNING
TO PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH,
DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER
FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE.

F AILURE TO FOLLOW THE SAFETY WARNINGS  COULD
RESULT IN
SERIOUS INJURY , DEATH OR PROPERTY DAMAGE . N EVER TEST FOR GAS LEAKS
WITH AN OPEN FLAME . U SE COMMERCIALLY AVAILABLE SOAP SOLUTION
MADE SPECIFICALLY FOR THE DETECTION OF LEAKS TO CHECK ALL
CONNECTIONS . A FIRE OR  MAY RESULT CAUSING PROPERTY
DAMAGE , PERSONAL INJURY OR LOSS OF LIFE .

S I L ES C ONSIGNES D E S É CURITÉ
N E S ONT P AS S UIVIES À L A L ETTRE , C ELA
P
EUT E NTRAÎNER L A M ORT , D E G RAVES B LESSURES
O U D ES D OMMAGES
M
ATÉRIELS . N E J AMAIS V É RIFIER L A P RÉ SENCE D E F UITES D E G AZ A U
M
OYEN D' UNE F LAMME N UE . V É RIFIER
T OUS L ES R ACCORDS E N U TILISANT
U
NE S OLUTION S AVONNEUSE C OMMERCIALE C ONÇ UE S PÉ CIALEMENT P OUR
L
A D ÉTECTION D E F UITES . U N I NCENDIE O U U NE E XPLOSION R ISQUE D E S E
P
RODUIRE , C E Q UI P EUT E NTRAÎNER L A M ORT , D ES B LESSURES O U D ES
D
OMMAGES M ATÉRIELS .

4
D
Failure To Follow The Steps Outlined Below For Each Appliance
Connected To The Venting System Being Placed Into Operation
Could Result In Carbon Monoxide Poisoning Or Death. The
Following Steps Shall Be Followed For Each Appliance Connected
To The Venting System Being Placed Into Operation, While All
Other Appliances Connected To The Venting System Are Not In
Operation:
1) Seal Any Unused Openings In The Venting System.
2) Inspect The Venting System For Proper Size And Horizontal
Pitch, As Required In The National Fuel Gas Code, Ansi
Z223.1/nfpa 54 Or The Natural Gas And Propane Installation Code,
Csa B149.1 And These Instructions. Determine That There Is No
Blockage Or Restriction, Leakage, Corrosion And Other
Deficiencies Which Could Cause An Unsafe Condition.
3) As Far As Practical, Close All Building Doors And Windows And
All Doors Between The Space In Which The Appliance(s)
Connected To The Venting System Are Located And Other Spaces
Of The Building.
4) Close Fireplace Dampers.
5) Turn On Clothes Dryers And Any Appliance Not Connected To
The Venting System. Turn On Any Exhaust Fans, Such As Range
Hoods And Bathroom Exhausts, So They Are Operating At
Maximum Speed. Do Not Operate A Summer Exhaust Fan.
6) Follow The Lighting Instructions. Place The Appliance Being
Inspected Into Operation. Adjust The Thermostat So Appliance Is
Operating Continuously.
7) Test For Spillage From Draft Hood Equipped Appliances At The
Draft Hood Relief Opening After 5 Minutes Of Main Burner
Operation. Use The Flame Of A Match Or Candle.
8) If Improper Venting Is Observed During Any Of The Above Tests,
The Venting System Must Be Corrected In Accordance With The
National Fuel Gas Code, Ansi Z223.1/nfpa 54 And/or Natural Gas
And Propane Installation Code, Csa B149.1.
9) After It Has Been Determined That Each Appliance Connected
To The Venting System Properly Vents When Tested As Outlined
Above, Return Doors, Windows, Exhaust Fans, Fireplace Dampers
And Any Other Gas-fired Burning Appliance To Their Previous
Conditions Of Use.
E
Si les étapes décrites ci-dessous ne sont pas suivies pour chacun
des appareils raccordés au système de ventilation au moment
de sa mise en marche, cela peut entraîner une intoxication au
monoxyde de carbone ou la mort. Les étapes suivantes doivent
être suivies pour chacun des appareils raccordés au système de
ventilation au moment de sa mise en marche, alors que tous les
autres appareils raccordés au système de ventilation ne sont
pas en marche:
1) Sceller toutes les ouvertures inutilisées du système de
ventilation.
2) Inspecter le système de ventilation afin de vérifier si la taille
et l’inclinaison par rapport à l’horizontale sont conformes aux
exigences du National Fuel Gas Code, ANSI Z223.1/NFPA 54 ou
du Code d’installation du gaz naturel et du propane, CSA B149.1
et à ces instructions. Vérifier qu’il n’y pas d’obstruction ou de
pourraient entraîner une situation dangereuse.
3) Si possible, fermer toutes les portes et fenêtres du bâtiment
ainsi que toutes les portes séparant l’endroit où se trouvent les
appareils raccordés au système de ventilation et less autres
zones du bâtiment.
4) Fermer le registre des foyers.
5) Mettre les sécheuses en marche ainsi que tous les autres
appareils qui ne sont pas raccordés au systéme de ventilation.
Mettre en marche tous les ventilateurs de tirage, comme celui
des hottes de cuisine et des salles de bains, et les régler à la
puissance maximale. Ne pas mettre en marche les ventilateurs
d’été.
6) Suivre les instructions d’allumage. Mettre en marche
l’appareil soumis à l’inspection. Régler le thermostat de manièr
à ce que l’appareil fonctionne en continu.
7) Vérifier la présence de fuite au niveau de l’ouverture du
coupe-tirage des appareils qui en sont dotés après 5 minutes de
fontionnement du brûleur principal. Utiliser la flamme d’une
allumette ou d’une bougie.
8) Si un problème de ventilation est observé pendant l’un des
essaid décrits ci-dessus, des correctifs doivent être apportés au
système de ventilation conformé National Fuel Gas Code, Ansi
Z223.1/nfpa 54 And/or Natural Gas And Propane Installation
Code, Csa B149.1.
9) Une fois qu’il été déterminé que chaque appareil raccordé au
système de ventilation fontionne correctement au moyen des
essais décrits ci-dessus, les portes, les fenêtres, les ventilateurs,
les registres de foyer et tous les autres appareils de combustion
alimentés au gaz doivent être remis dans leur état initial.

5
General Information
WARNING
T
O PREVENT PROPERTY DAMAGE, P ERSONAL I NJURY O R DEATH, DUE T O FIRE,
EXPLOSIONS, SMOKE, S OOT, C ONDENSATION, E LECTRIC SHOCK OR CARBON
MONOXIDE, THIS UNIT MUST B E PROPERLY I NSTALLED, R EPAIRED, O PERATED,
AND MAINTAINED.
This unit is approved for outdoor installation ONLY. Rated
performance is achieved after 20 hours of operation. Rated
performance is delivered at the specied airow. See outdoor
unit specication sheet for split system models or product
specication sheet for packaged and light commercial models.
Specication sheets can be found at www.daikincomfort.com
for Daikin brand products. Within the website, please select
the residential or commercial products menu and then select
the submenu for the type of product to be installed, such as air
conditioners or heat pumps, to access a list of product pages
that each contain links to that model’s specication sheet.
To assure that your unit operates safely and e󰀩ciently, 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 NFPA54/ANSI
Z223.1 and National Standard of Canada CAN/CSA B149
Installation Codes.
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 A.S.H.R.A.E. Guide or
Manual J - Load Calculations published by the Air Conditioning
Contractors of America.
Obtain from:
American National Standards Institute
25 West 43rd Street, 4th Floor
New York, NY 10036
Transportation Damage
Check the carton upon arrival for external damage. If damage
is found, a request for inspection by carrier agent should be
made in writing immediately.
Carefully inspect the unit for damage including damage to
the cabinetry. Any bolts or screws which may have loosened
in transit must be retightened. In the event of damage, the
receiver 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
notied as soon as possible-preferably within 5 days.
4. File the claim with the following supporting documents:
a. Original Bill of Lading, certied copy, or indemnity
bond.
b. Original paid freight bill or indemnity in lieu thereof.
c. Original invoice or certied 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. Recycle or dispose of the
packaging material according to local codes.
B10259-216
CO can cause serious illness including permanent brain
damage or death.
Advertencia especial para la instalación de calentadores ó manejadoras
de aire en áreas cerradas como estacionamientos ó cuartos de servicio.
B10259-216
El monóxido de carbono puede causar enfermedades severas
como daño cerebral permanente ó muerte.
Las emisiones de monóxido de carbono pueden circular a través
del aparato cuando se opera en cualquier modo.
B10259-216
RISQUE D'EMPOISONNEMENT AU 
Le monoxyde de
des
carbone peut causer des maladies graves telles que
dommages permanents au cerveau et meme la mort.
Cette ventilation est nécessaire pour éviter le danger d'intoxication
au CO pouvant survenir si un appareil produisant du monoxyde
de carbone continue de fonctionner au sein de la zone confinée.

6
Unit location
WARNING
TO PREVENT POSSIBLE E QUIPMENT D AMAGE, P ROPERTY DAMAGE, PERSONAL
INJURY O R DEATH, T HE F OLLOWING BULLET POINTS M UST BE O BSERVED
WHEN INSTALLING THE UNIT.
All Installations:
• For proper ame pattern within the heat exchanger
and proper condensate drainage, the unit must be
mounted level.
• The ue outlet hood must be at least 12 inches from
any opening through which ue gases could enter
a building, and at least three feet above any forced
air inlet located within ten feet. The economizer/
manual fresh air intake/motorized fresh air intake
and combustion air inlet mounted on the unit are not
a󰀨ected 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
uorine. Common sources of such compounds include
swimming pool chemicals 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/
uorine compounds.
• To avoid possible illness or death of the building
occupants, do NOT locate outside air intake device
(economizer, manual fresh air intake, motorized fresh
air intake) too close to an exhaust outlet, gas vent
termination, or plumbing vent outlet. For protection,
proper operation, and service access (see appendix).
These clearances must be permanently maintained.
• The combustion air inlet and ue outlet hoods on the
unit must never be obstructed. If used, do not allow
the economizer/manual fresh air damper/ motorized
fresh 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 return
air entering the unit must be between 50° F and 100°
F.
• Units manufactured on or after May 1, 2017 are not
permitted to be used in Canada for heating of buildings
or structures under construction.
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 that is 3” larger than
the package unit footprint and a minimum of 3” thick.
• The base should also be located where no runo󰀨 of
water from higher ground can collect in the unit.
• The top of the unit should be completely unobstruct-
ed. If units are to be located under an overhang, there
should be a minimum of 48” clearance and provisions
made to deect the warm discharge air out from the
overhang.
• Close to the wall application assures free, unobstructed
air to the other two sides. In more conned application
spaces, such as corners provide a minimum 12”
clearance on all air inlet sides. Allow 36” minimum for
service access to the compressor compartment and
controls.
• Unit should be located a minimum of 3” away from the
wall with the connections facing the wall
Outside Slab Installation
Rooftop Installations Only:
NOTE: To ensure proper condensate drainage, unit must
be installed in a level position.
• To avoid possible property damage or personal injury,
the roof must have su󰀩cient structural strength to
carry the weight of the unit(s) and snow or water
loads as required by local codes. Consult a structural
engineer to determine the weight capabilities of the
roof.
Rooftop Installation

7
• The unit may be installed directly on wood oors or on
Class A, Class B, or Class C roof covering material.
• To avoid possible personal injury, a safe, at surface
for service personnel should be provided.
Roof Curb Installations Only:
• Su󰀩cient structural support must be determined prior
to locating and mounting the curb and package unit.
• Ductwork must be constructed using industry
guidelines. The duct work must be placed into the
roof curb before mounting the package unit.
• Curb insulation, cant strips, ashing and general
roong material are furnished by the contractor.
Roof Curb Installation
Model Roof Curb
DP3GM(24-48)***M41** D14CRBPGCHMA
RIGGING DETAILS
WARNING
T
O PREVENT PROPERTY DAMAGE, T HE U NIT SHOULD R EMAIN IN A N UPRIGHT
POSITION DURING ALL RIGGING AND MOVING O PERATIONS.
T
O FACILITATE
LIFTING AND MOVING W HEN A CRANE I S USED, PLACE THE UNIT IN AN
ADEQUATE CABLE SLING.
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 roof curb installation
instructions.
Refer to the Roof Curb Installation Instructions for proper curb
installation. Curbing must be installed in compliance with the
National Roong 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.
Unit should be lifted by the 4 holes located at the base frame
corners. Lifting cables should be attached to the unit with
shackles. While rigging unit, center of gravity will cause the
condenser end (heavier) to be lower than supply air end. The
distance between the unit and the crane hook up should not
be less than 60”. The spreaders bars should span over the
unit to prevent damage to the cabinet from the lifting cables.
Rigging
GAS PIPING
IMPORTANT NOTE: This unit is factory set to operate on
natural gas at the altitudes shown on the rating plate.
WARNING
T
O AVOID PROPERTY DAMAGE, P ERSONAL INJURY OR DEATH WHEN E ITHER
USING PROPANE GAS ALONE OR A T HIGHER A LTITUDES, O BTAIN AND INSTALL
THE PROPER C ONVERSION KIT(S).
F
AILURE T O DO S O CAN RESULT IN
UNSATISFACTORY OPERATION AND/OR EQUIPMENT DAMAGE.
H
IGH ALTITUDE
KITS A RE F OR
U
.
S
. INSTALLATIONS ONLY A ND ARE NOT APPROVED F OR U SE
IN
C
ANADA.
The rating plate is stamped with the model number, type of
gas and gas input rating. Make sure the unit is equipped to
operate on the type of gas available. Conversion to LP gas
is permitted with the use of the factory authorized conversion
kit LPM-07, for use with single stage models, or LPM-08, for
use with two-stage models. See table below.
LP Conversion Kit Model
LPM-07 Single Stage Heating Models
LPM-08 Two-Stage Heating Models
Inlet Gas Pressure
Natural Min. 5.0" W.C., Max. 10.0" W.C.
Propane Min. 11.0" W.C., Max. 13.0" W.C.

8
Inlet Gas Pressure Must be within the minimum and Maximum
Value Shown in Table Above.
The minimum supply pressure should not vary from that
shown in the table above because this could prevent the unit
from having dependable ignition. In addition, gas input to the
burners must not exceed the rated input shown on the rating
plate. Overring of the unit could result in premature heat
exchanger failure.
High Altitude Derate (U.S. Installations Only)
IMPORTANT NOTE: The gas/electric units naturally derate
with altitude. Do not attempt to increase the r ing rate by
changing orices or increasing the manifold pressure. This
can cause poor combustion and equipment failure. At all
altitudes, the manifold pressure must be within 0.3 inches
W.C. of that listed on the nameplate for the fuel used. At all
altitudes and with either fuel, the air tempera ture rise must
be within the range listed on the unit nameplate.
Refer to the Installation Manual provided with the LP kit for
conversion from natural gas to propane gas and for altitude
adjustments. Use HA03 for installations above 2000’.
NOTE: For altitudes above 2,000 feet, please refer to the gas/
electric package unit specication sheet for required kit(s).
Piping
IMPORTANT NOTE: To avoid possible unsatisfactory opera-
tion or equipment damage due to under ring of equipment,
do not undersize the natural/propane gas piping from the
meter/tank to the unit. When sizing a trunk line, 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 unit 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 NFPA
54/ANSI Z223.1.

1/2 3/4 11 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
Pressure= .50 PSIG or less and Pressure Drop of 0.3" W.C.
(Based on 0.60 Specific Gravity Gas)
Natural Gas Capacity of Pipe
in Cubic Feet of Gas Per Hour (CFH)
Nominal Black Pipe Size (inches)
Length of
Pipe in Feet
BTUH Furnace Input
Heating Value of Gas (BTU/Cubic Foot)
CFH =
Refer to the Proper Piping Practice drawing for the general
layout at the unit. The following rules apply:
1. Use black iron pipe and ttings for the supply piping.
The use of a ex connector and/or copper piping is
permitted as long as it is in agreement with local
codes.
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-o󰀨 valve in a convenient location
(within six feet of unit) between the meter and the unit.
7. Tighten all joints securely.
8. The unit must be connected to the building piping by
one of the following methods:
• Rigid metallic pipe and ttings
• Semirigid metallic tubing and metallic fittings
(Aluminum alloy tubing must not be used in exterior
locations)
• Listed gas appliance connectors used in accordance
with the terms of their listing that are completely in the
same room as the equipment
• In the prior two methods above the connector or
tubing must be protected from physical and thermal
damage. Aluminum alloy tubing and connectors must
be coated to protect against external corrosion when
in contact with masonry, plaster or insulation or are
subject to repeated wettings by liquids (water - not
rain water, detergents or sewage)
Proper Piping Practice
NOTE: The unit gas supply entrance is factory sealed with
plugs. Keep plugs in place until gas supply is ready to be
installed. Once ready, replace the plugs with the supplied
grommets and install gas supply line.

9
Tanks and Piping
Complete information regarding tank sizing for vaporization,
recommended regulator settings and pipe sizing is
available from most regulator manufacturers and propane
gas suppliers.
Since propane gas will quickly dissolve white lead or
most standard com mercial compounds, special pipe dope
must be used. Shellac base compounds resistant to the
actions of liqueed petroleum gases such as Gasolac®,
Stalactic®, Clyde’s® or John Crane® are satisfactory.
See below for typical propane gas piping.
200 PSIG
Maximum
5 to 15 PSIG
(20 PSIG Max.) Continuous
11" W.C.
Second Stage
Regulator
First Stage
Regulator
Typical Propane Gas Piping
Sizing Between First and Second Stage Regulator
Maximum Propane Capacities listed are based on 1 PSIG Pressure Drop at 10
PSIG Setting. Capacities in 1,000 BTU/HR
3/8" 1/2" 5/8" 3/4" 7/8" 1/2" 3/4"
30 309 700 1,303 2,205 3,394 1,843 3,854
40 265 599 1,115 1,887 2,904 1,577 3,298
50 235 531 988 1,672 2,574 1,398 2,923
60 213 481 896 1,515 2,332 1,267 2,649
70 196 446 824 1,394 2,146 1,165 2,437
80 182 412 767 1,297 1,996 1,084 2,267
90 171 386 719 1,217 1,873 1,017 2,127
100 161 365 679 1,149 1,769 961 2,009
150 130 293 546 923 1,421 772 1,613
200 111 251 467 790 1,216 660 1,381
250 90 222 414 700 1,078 585 1,224
300 89 201 378 634 976 530 1,109
350 82 185 345 584 898 488 1,020
400 76 172 321 543 836 454 949
To convert to Capacities at 15 PSIG Settings -- Multiply by 1.130
To convert to Capacities at 5 PSIG Settings -- Multiply by 0.879
PIPE OR
TUBING
LENGTH,
FEET
NOMINAL PIPE SIZE,
SCHEDULE 40
TUBING SIZE, O.D., TYPE L
Sizing Between Single or Second Stage Regulator and Appliance*
Maximum Propane Capacities Listed are Based on 1/2" W.C. Pressure Drop at
11" W.C. Setting. Capacities in 1,000 BTU/HR
3/8" 1/2" 5/8" 3/4" 7/8" 1/2"
3/4" 1" 1-1/4" 1-1/2"
10 49 110 206 348 539 291 608 1,146 2,353 3,525
20 34 76 141 239 368 200 418 788 1,617 2,423
30 27 61 114 192 296 161 336 632 1,299 1,946
40 23 52 97 164 253 137 284 541 1,111 1,665
50 20 46 86 146 224 122 255 480 985 1,476
60 19 42 78 132 203 110 231 436 892 1,337
80 16 36 67 113 174 94 198 372 764 1,144
100 14 32 59 100 154 84 175 330 677 1,014
125 12 28 52 89 137 74 155 292 600 899
150 11 26 48 80 124 67 141 265 544 815
200 10 22 41 69 106 58 120 227 465 697
250 919 36 61 94 51 107 201 412 618
300 818 33 55 85 46 97 182 374 560
350 716 30 51 78 43 89 167 344 515
400 715 28 47 73 40 83 156 320 479
*DATA IN ACCORDANCE WITH NFPA PAMPHLET NO. 54
NOMINAL PIPE SIZE,
SCHEDULE 40
TUBING SIZE, O.D., TYPE L
PIPE OR
TUBING
LENGTH,
FEET
Table 3 - Propane Gas Pipe Sizing
Gas Piping Checks
CAUTION
T
O PREVENT PROPERTY DAMAGE OR P ERSONAL INJURY D UE T O FIRE, THE
FOLLOWING I NSTRUCTIONS M UST BE P ERFORMED R EGARDING G AS
CONNECTIONS AND PRESSURE T ESTING:
•
T
HE U NIT AND ITS G AS CONNECTIONS M UST BE L EAK TESTED BEFORE
PLACING IN O PERATION.
B
ECAUSE O F THE DANGER O F EXPLOSION OR
FIRE, NEVER USE A MATCH OR O PEN FLAME T O TEST F OR LEAKS.
N
EVER
EXCEED S PECIFIED P RESSURES F OR TESTING.
H
IGHER PRESSURE M AY
DAMAGE G AS V ALVE A ND C AUSE O VERFIRING WHICH MAY RESULT I N
PREMATURE HEAT E XCHANGE F AILURE.
•
T
HIS UNIT A ND ITS SHUT-OFF V ALVE M UST BE D ISCONNECTED F ROM
THE GAS SUPPLY DURING ANY PRESSURE TESTING OF THAT SYSTEM AT
TEST PRESSURES IN EXCESS OF 1/2
PSIG
(3.48 K
P
A).
•
T
HIS UNIT M UST BE ISOLATED FROM T HE G AS SUPPLY SYSTEM BY
CLOSING ITS MANUAL SHUT-OFF V ALVE D URING A NY P RESSURE
TESTING OF T HE G AS S UPPLY PIPING SYSTEM AT T EST PRESSURES
EQUAL TO O R LESS T HAN 1/2
PSIG
( 3.48 K
P
A).
WARNING
T
O AVOID PROPERTY D AMAGE OR P ERSONAL INJURY, BE S URE THERE IS
NO O PEN FLAME IN T HE V ICINITY DURING A IR B LEEDING.
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 loosening the ground joint union
until pure gas is expelled. Tighten union and wait for ve
minutes until all gas has been dissipated in the air. Be
certain there is no open ame in the vicinity during air
bleeding procedure. The unit is placed in operation by
closing the main electrical disconnect switch for the unit.
PROPANE GAS INSTALLATIONS
WARNING
TO AVOID PROPERTY D AMAGE, PERSONAL INJURY O R DEATH DUE TO F IRE
OR E XPLOSION C AUSED BY A P ROPANE G AS L EAK, I NSTALL A G AS
DETECTING WARNING DEVICE. SINCE R UST CAN REDUCE T HE L EVEL
OF O DORANT I N PROPANE GAS, A G AS D ETECTING W ARNING D EVICE
IS THE O NLY RELIABLE WAY TO DETECT A P ROPANE GAS L EAK.
CONTACT A L OCAL P ROPANE G AS S UPPLIER ABOUT INSTALLING A
GAS DETECTING WARNING DEVICE.
IMPORTANT NOTE: Propane gas conversion kits must
be installed to convert units to propane gas.
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 supply pressure
must be within 9.7 - 10.3 inches W.C. at the 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.
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.

10
RCW1W2 GY1 Y2
RY2
CY1
W1 G
W2
Furnace Integrated
Control Module
Thermostat
Two-Stage Heating
with
Two-Stage Cooling
(
(
Two-Stage Heating with Two-Stage Cooling
Thermostat Diagram
Single Stage Thermostat - Two-Stage Models
To use a single stage thermostat, move jumper located
to the left of the terminal strip labeled “Stage Delay” from
NONE to “5” or “10” minutes. This selection will cause
the control to run on low stage for the selected time (5
or 10 minutes) then shift to HIGH STAGE. This option
controls both cooling and heating modes. If the jumper
is not moved, only low-stage cool and low-stage heat
will operate.
5 MINUTE DELAY
PERIOD WITH
JUMPER IN THIS
POSITION
10 MINUTE DELAY
PERIOD WITH
JUMPER IN THIS
POSITION
Two-Stage Heating (timed) and Two-Stage Cooling
(timed)
with Single Stage Thermostat Diagram
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 National Electrical Code, ANSI/NFPA No.
70, and/or the CSA C22.1 Electrical Code. Ensure low
voltage connections are waterproof.
WARNING
T
O PREVENT PROPERTY D AMAGE OR S ERIOUS P ERSONAL INJURY D UE T O
FIRE O R EXPLOSION CAUSED BY A PROPANE GAS LEAK, I NSTALL A GAS
DETECTING WARNING DEVICE.
I
F THE PROPANE GAS UNIT I S INSTALLED IN A N EXCAVATED AREA OR A
CONFINED S PACE, A WARNING DEVICE I S REQUIRED D UE T O:
•
P
ROPANE G AS I S HEAVIER THAN A IR AND ANY L EAKING G AS CAN
SETTLE IN ANY LOW AREAS OR CONFINED S PACES.
•
P
ROPANE GAS ODORANT MAY FADE, MAKING T HE GAS UNDETECTABLE
EXCEPT W ITH A WARNING DEVICE.
ELECTRICAL WIRING
Thermostat Location
Mount the thermostat approximately ve feet above the
oor, in an area that has an inside, vibration-free wall
and has good air circulation.
Movement of air must not be obstructed by furniture,
door, draperies, etc. The thermostat must not be mounted
where it will be a󰀨ected by drafts, hot or cold water pipes
or air ducts in walls, radiant heat from replace, lamps,
the sun, television, etc. Consult the Instruction Sheet
packaged with thermostat for mounting instructions.
Five ton models have two stages of heating and
two stages of mechanical cooling. Units which have
economizers may use thermostats with two or three
stages of cooling.
All other units have one stage of heating and one stage
of mechanical cooling. Units which have economizers
may use thermostats with one or two stages of cooling.
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. 24 volt
wiring must be connected between the unit control panel
and the room thermostat.
Thermostat Wiring - Single Stage Models
From
Unit
Single Stage Heating & Cooling Thermostat Diagram
Thermostat Wiring - Two Stage Models