Daikin DP14G M Series User manual

1
Ax this manual and
Users Information Manual adjacent to the unit.
DP14G M SERIES With R-410A
Single PAckAge gAS-electRic heAting & cooling Unit
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.......................................................................... 11
ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST, SERVICE OR
REPAIR (HEREINAFTER, “SERVICE”) THE EQUIPMENT SPECIFIED IN THIS
MANUAL SHOULD SERVICE THE EQUIPMENT. THE MANUFACTURER WILL NOT
BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR SERVICE PROCEDURES. IFYOU SERVICE THIS UNIT, YOU
ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY
RESULT. INADDITION, IN JURISDICTIONS THAT REQUIRE ONE OR MORE
LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL, ONLY
LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT. IMPROPER
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
©2014 - 2019, 2021
IOD-3008J
05/2021

2
FILTERS ................................................................................. 12
VENTING ....................................................................................... 12
FLUE HOOD INSTALLATION.................................................. 12
CONDENSATE DRAIN .................................................................... 12
CONDENSATE DRAIN CONNECTION .................................... 12
NORMAL SEQUENCE OF OPERATION........................................... 12
COOLING .............................................................................. 13
FAN ONLY ............................................................................. 13
STARTUP, ADJUSTMENTS, AND CHECKS....................................... 13
HEATING STARTUP .............................................................. 13
GAS SUPPLY PRESSURE MEASUREMENT............................. 14
GAS MANIFOLD PRESSURE MEASUREMENT
AND ADJUSTMENT............................................................... 15
COOLING STARTUP .............................................................. 17
TEMPERATURE RISE CHECK ................................................ 16
EXTERNAL STATIC PRESSURE CHECK .................................. 16
SUPERHEAT ................................................................................... 17
CHECKING SUPERHEAT ....................................................... 17
CHECKING SUBCOOLING ..................................................... 18
TROUBLESHOOTING ..................................................................... 18
IGNITION CONTROL ERROR CODES..................................... 18
ABNORMAL OPERATION - HEATING.................................... 18
ABNORMAL OPERATION - COOLING ................................... 20
MAINTENANCE ............................................................................. 20
FILTER REPLACEMENT OR CLEANING ................................. 20
CABINET FINISH MAINTENANCE......................................... 20
  .......... 20
CONDENSER, EVAPORATOR,
 ..................................... 20
 ..................... 20
  .................... 20
CLEANING FLUE PASSAGES
  ........................................... 20
 .......... 21
CLEANING BURNERS............................................................ 21
ACCESSORIES AND FUNCTIONAL PARTS...................................... 21
SHEET METAL ACCESSORIES ............................................... 21
FUNCTIONAL PARTS............................................................. 21
GENERAL INFORMATION..................................................... 21
BLOWER PERFORMANCE DATA .................................................... 22
IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
 .................................................... 26
HEATING TIMING CHART.............................................................. 26
COOLING TIMING CHART ............................................................. 26
IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
........................................................ 27
HEATING TIMING CHART.............................................................. 27
COOLING TIMING CHART ............................................................. 27
APPENDIX ..................................................................................... 28
UNIT DIMENSIONS ....................................................................... 28
MINIMUM CLEARANCES .............................................................. 29
RECOMMENDED FILTER SIZES...................................................... 29
WIRING DIAGRAMS...................................................................... 30
HOMEOWNER’S ROUTINE MAINTENANCE.................................. 43
 ........................................................................... 44

3
REPLACEMENT 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

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 G AS S Y FAIL TO SHUT O FF, TURN
OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO T HE FURNACE BEFORE
TURNING OFF THE ELECTRICAL S Y.
WARNING
TO AVOID ERTY DAMAGE, ERSONAL INJURY O R DEATH, D O NOT USE
THIS U NIT IF A NY ART HAS BEEN U NDER W ATER. IMMEDIATELY C ALL A
QUALIFIED SERVICE TECHNICIAN T O INECT THE FURNACE AND T O REACE
ANY ART O F THE CONTROL SYSTEM A ND A NY G AS C ONTROL H AVING BEEN
UNDER WATER.
WARNING
T
O REVENT THE RISK OF ROERTY DAMAGE, ERSONAL INJURY, OR DEATH,
DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER
FLAMMABLE LIQUIDS OR VAORS IN THE VICINITY OF THIS ALIANCE.
FIRE OR EXPLOSION HAZARD
F AILURE TO FOLLOW THE SAFETY WARNINGS EXACTLY 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 EXPLOSION MAY RESULT CAUSING PROPERTY
DAMAGE , PERSONAL INJURY OR LOSS OF LIFE .
RISQUE D’INCENDIE OU D’EXPLOSION
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
CARBON MONOXIDE POISONING HAZARD
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.
RISQUE D’INTOXICATION AU MONOXYDE DE CARBONE
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

WARNING
T
O EVENT ERTY DAMAGE, ERSONAL I NJURY O R DEATH, DUE TO FIRE,
EXOSIONS, SMOKE, S OOT, C ONDENSATION, E LECTRIC SHOCK OR CARBON
MONOXIDE, THIS UNIT MUST B E ERLY I NSTALLED, R AIRED, O RATED,
AND MAINTAINED.
This unit is approved for outdoor installation ONLY. Rated perfor-
mance 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 con-
ditioned. 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

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 MONOXYDE DE CARBONE
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 EVENT SSIBLE E QUMENT DAMAGE, RORTY DAMAGE, RSONAL
INJURY OR DEATH, T HE F OLLOWING BULLET INTS M UST BE O BSERVED
WHEN INSTALLING THE UNIT.

• 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 flue 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.

• 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.
Outside Slab Installation

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.

7
Rooftop Installation
• 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.

• 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
RIGGING DETAILS
WARNING
T
O EVENT ERTY D AMAGE, T HE U NIT SHOULD R EMAIN IN AN RIGHT
SITION DURING ALL RIGGING AND MOVING O RATIONS.
T
O FACILITATE
LIFTING AND MOVING W HEN A CRANE I S USED, ACE 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 dimen-
sions are shown in roof curb installation instructions.
Refer to the Roof Curb Installation Instructions for proper curb in-
stallation. 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.
Rigging
GAS PIPING
This unit is factory set to operate on natural
gas at the altitudes shown on the rating plate.
WARNING
T
O AVOID ERTY D AMAGE, ERSONAL INJURY OR DEATH WHEN E ITHER
USING ANE GAS ALONE OR A T HIGHER A LTITUDES, O BTAIN AND INSTALL
THE ER C ONVERSION KIT(S).
F
AILURE T O DO S O CAN RESULT I N
UNSATISFACTORY ERATION AND/OR EQUIENT DAMAGE.
H
IGH ALTITUDE
KITS A RE F OR
U
.
S
. INSTALLATIONS ONLY A ND ARE NOT OVED 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

8

Natural Min. 5.0" W.C., Max. 10.0" W.C.
Propane Min. 11.0" W.C., Max. 13.0" W.C.
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.

IThe gas/electric units naturally derate with al-
titude. 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 conver-
sion from natural gas to propane gas and for altitude adjustments.
NOTE: For altitudes above 2,000 feet, please refer to the gas/electric
package unit specication sheet for required kit(s).

ITo avoid possible unsatisfactory operation 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 ttings (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)

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

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.

Maximum

 Continuous
11" W.C.
Second Stage
Regulator
First Stage
Regulator

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

TUBING
LENGTH,
FEET

SCHEDULE 40

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

SCHEDULE 40


TUBING
LENGTH,
FEET


CAUTION
T
O EVENT OTY DAMAGE OR ERSONAL INJURY D UE T O FIRE, THE
FOLLOWING I NSTRUCTIONS M UST BE ERFORMED R EGARDING G AS
CONNECTIONS AND ESSURE T ESTING:
•
T
HE U NIT AND ITS G AS CONNECTIONS M UST BE L EAK TESTED B EFORE
ACING IN O RATION.
B
ECAUSE O F THE DANGER O F EXOSION OR
FIRE, NEVER USE A MATCH OR O N FLAME TO TEST F OR LEAKS.
N
EVER
EXCEED S CIFIED RESSURES F OR TESTING.
H
IGHER ESSURE M AY
DAMAGE G AS V ALVE A ND C AUSE O VERFIRING WHICH MAY RESULT I N
EMATURE HEAT E XCHANGE F AILURE.
•
T
HIS UNIT A ND ITS SHUT-OFF V ALVE M UST BE D ISCONNECTED F ROM
THE GAS SY DURING ANYRESSURE TESTING OF THAT SYSTEM AT
TEST ESSURES IN EXCESS OF 1/2
G
(3.48 K

A).
•
T
HIS UNIT M UST BE I SOLATED FROM T HE G AS S Y SYSTEM B Y
CLOSING ITS MANUAL SHUT-OFF V ALVE D URING A NY RESSURE
TESTING OF T HE G AS S Y NG S YSTEM AT T EST ESSURES
EQUAL TO O R LESS T HAN 1/2
G
( 3.48 K

A).
WARNING
T
O AVOID ERTY DAMAGE OR ERSONAL INJURY, BE S URE THERE IS
NO ON 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 OTY DAMAGE, SONAL INJURY O R DEATH DUE TO F IRE
OR E LOSION C AUSED BY A  RONE G AS L EAK, I NSTALL A G AS
DETECTING WARNING DEVICE. SINCE RUST CAN REDUCE T HE L EVEL
OF O DORANT IN ANE GAS, A G AS DETECTING W ARNING D EVICE
IS T HE O NLY RELIABLE W AY T O DETECT A RONE G AS L EAK.
CONTACT A L OCAL RONE G AS S IER ABOUT INSTALLING A
GAS DETECTING WARNING DEVICE.
  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
Thermostat Wiring - Two Stage Models
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

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
TO AVOID THE RISK O F ELECTRICAL SHOCK, WIRING T O THE UNIT M UST BE
LARIZED AND G ROUNDED.
CAUTION
T
O AVOID ERTY DAMAGE OR ERSONAL I NJURY DUE T O FIRE, USE
ONLY C R CONDUCTORS.
WARNING
T
O EVENT ERTY D AMAGE OR S ERIOUS ERSONAL INJURY D UE T O
FIRE O R EXOSION CAUSED B Y A ANE GAS LEAK, I NSTALL A GAS
DETECTING WARNING DEVICE.
I
F THE ANE GAS UNIT I S INSTALLED IN A N EXCAVATED AREA OR A
CONFINED S CE, A WARNING DEVICE I S REQUIRED D UE T O:
•

ROANE G AS I S HEAVIER THAN A IR AND ANY L EAKING G AS CAN
SETTLE I N ANY L OW A REAS O R CONFINED S CES.
•

ROANE GAS ODORANT MAY FADE, MAKING THE GAS UNDETECTABLE
EXCE W ITH A WARNING DEVICE.
ELECTRICAL WIRING

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