Unitary products group CHAMPION PLUS Series User manual

CONTENTS
INSTALLATION SAFETY INFORMATION . . . . . . . . 3
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MAINTENANCE AND RENEWAL PARTS . . . . . . . . 3
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . 14
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . 18
TYPICAL WIRING DIAGRAM NOTES . . . . . . . . . . 22
Complete Table of Contents on following pages.
NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words: NOTE,
CAUTION, and WARNING. Notes are intended to clarify or
make the installation easier. Cautions are given to prevent
equipment damage. Warnings are given to alert installer
that personal injury and/or equipment damage may result if
installation procedure is not handled properly.
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
INSTALLATION
MANUAL
SAVE THIS MANUAL
CHAMPION®PLUS
SINGLE PACKAGED GAS/ELECTRIC
AIR COOLED AIR CONDITIONERS
3 AND 4 NOMINAL TON
035-18579-001-B-0103
DNP: 036
048
This product was manufactured
in a plant whose quality system
is certified/registered as being
in conformity with ISO 9001.

035-18579-001-B-0103
2Unitary Products Group
TABLE OF CONTENTS
INSTALLATION SAFETY INFORMATION . . . . . . . . 3
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MAINTENANCE AND RENEWAL PARTS . . . . . . . . 3
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
RIGGING OR HANDLING . . . . . . . . . . . . . . . . . . . . . . . . . 5
DUCT WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ROOF CURB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SERVICE ACCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
POWER AND CONTROL WIRING . . . . . . . . . . . . . . . . . . 6
COMPRESSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
GAS CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
FLUE VENT HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . 14
HEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CIRCULATING FAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PRE-START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . 14
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . 14
TO TURN OFF GAS TO UNIT . . . . . . . . . . . . . . . . . . . . 15
POST-START CHECK LIST (GAS) . . . . . . . . . . . . . . . . 15
MANIFOLD GAS PRESSURE ADJUSTMENT . . . . . . . . 15
BURNER INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . 15
HOT SURFACE PILOT INSTRUCTIONS . . . . . . . . . . . . 15
ADJUSTMENT OF TEMPERATURE RISE . . . . . . . . . . 16
DIRECT DRIVE BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CHECKING GAS INPUT . . . . . . . . . . . . . . . . . . . . . . . . 16
NATURAL GAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . 18
TYPICAL WIRING DIAGRAM NOTES . . . . . . . . . 22
LIST OF FIGURES
Fig. # Pg. #
1 PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . 4
2 UNIT CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . 5
3 FIELD WIRING DIAGRAM CONTROL WIRING . . . . . 7
4 POWER WIRING FIELD DIAGRAM . . . . . . . . . . . . . . 7
5 EXT SUPPLY CONN EXT SHUT-OFF . . . . . . . . . . . . 9
6 FLUE VENT OUTLET AIR HOOD . . . . . . . . . . . . . . . 10
7 UNIT DIMENSIONS - FRONT . . . . . . . . . . . . . . . . . . 12
8 UNIT DIMENSIONS - FRONT & BOTTOM . . . . . . . . 13
9 UNIT DIMENSIONS - BACK & BOTTOM . . . . . . . . . 13
10 GAS VALVE - FRONT . . . . . . . . . . . . . . . . . . . . . . . . 15
11 GAS VALVE - REAR . . . . . . . . . . . . . . . . . . . . . . . . . 15
12 PROPER FLAME ADJUSTMENT . . . . . . . . . . . . . . . 15
13 IGNITOR AND FLAME SENSOR ASSEMBLY . . . . . 16
14 TYP WIRING DIA (208/230-1-60 PS) . . . . . . . . . . . . 19
15 TYP WIRING DIA (208/230-3-60 PS) . . . . . . . . . . . . 20
16 TYP WIRING DIA (460-3-60 PS) . . . . . . . . . . . . . . . . 21
17 TYPICAL WIRING DIAGRAM LEGEND . . . . . . . . . . 22
LIST OF TABLES
Tbl. # Pg. #
1 UNIT APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . 4
2 UNIT WEIGHTS AND CENTER OF GRAVITY . . . . . . . 5
3 NATURAL GAS APPLICATION DATA . . . . . . . . . . . . . 8
4 PROPANE (LP) GAS APPLICATION DATA . . . . . . . . . 8
5 NATURAL GAS PIPE SIZING CHART . . . . . . . . . . . . . 9
6 PROPANE (LP) GAS PIPE SIZING CHART . . . . . . . . . 9
7 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9 UNIT DIMENSIONS FRONT . . . . . . . . . . . . . . . . . . . . 12
10 UNIT MINIMUM CLEARANCES . . . . . . . . . . . . . . . . . 12
11 GASE RATE - CUBIC FEET PER HOUR . . . . . . . . . . 17

035-18579-001-B-0103
Unitary Products Group 3
INSTALLATION SAFETY INFORMATION
Read these instructions before continuing this appliance
installation. This is an outdoor combination heating and cool-
ing equipment. The installer must assure that these instruc-
tions are made available to the consumer and with
instructions to retain them for future reference.
1. Refer to the furnace rating plate for the approved type of
gas for this furnace.
2. Install this furnace only in a location and position as
specified on pages 4 and 5 of these instructions.
3. Never test for gas leaks with an open flame. Use com-
mercially available soap solution made specifically for
the detection of leaks when checking all connections, as
specified on pages 3 and 10 of these instructions.
4. Always install furnace to operate within the furnace’s
intended temperature-rise range with the duct system
and within the allowable external static pressure range,
as specified on the unit name/rating plate, specified on
pages 8 and 16 of these instructions.
5. This equipment is not to be used for temporary heating
of buildings or structures under construction.
GENERAL
YORK Model D1NP units are cooling/heating air conditioners
designed for outdoor installation. Only gas piping, electric
power and duct connections are required at the point of
installation.
The gas-fired heaters have hot surface to pilot ignition. The
tubular heat exchangers are aluminized steel.
Installer should pay particular attention to the words; NOTE,
CAUTION, and WARNING. NOTES are intended to clarify or
make the installation easier. CAUTIONS are given to prevent
equipment damage. WARNINGS are given to alert the instal-
ler that personal injury and/or equipment damage may result
if installation procedure is not handled properly.
INSPECTION
As soon as a unit is received, it should be inspected for possi-
ble damage during transit. If damage is evident, the extent of
the damage should be noted on the carrier's freight bill. A
separate request for inspection by the carrier's agent should
be made in writing. Refer to Form 50.15-NM for additional
information.
MAINTENANCE AND RENEWAL PARTS
Refer to User’s, Maintenance and Service Information Man-
ual, Part No. 035-15509-001.
APPROVALS
Design certified by CGA and AGA listed as follows:
1. For use as a forced air furnace with cooling unit.
2. For outdoor installation only.
3. For installation directly on combustible flooring or, in
U.S., on wood flooring or Class A; B; C roof covering
material.
4. For installation on combustible material.
5. For use with natural gas and/or propane (LP) gas.
Not suitable for use with conventional venting systems.
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could
result in serious injury, death or property damage.
Never test for gas leaks with an open flame. Use a
commercially available soap solution made specif-
ically for the detection of leaks to check all connec-
tions. A fire or explosion may result causing
property damage, personal injury or loss of life.
This product must be installed in strict compliance
with the enclosed installation instructions and any
applicable local, state, and national codes includ-
ing but not limited to, building, electrical and
mechanical codes.
Improper installation may create a condition where
the operation of the product could cause personal
injury or property damage.

035-18579-001-B-0103
4Unitary Products Group
INSTALLATION
LIMITATIONS
These units must be installed in accordance with the follow-
ing national and local safety codes.
1. National Electrical Code ANSI/NFPS No. 70 or Canadian
Electrical Code Part 1, C22.1 (latest editions).
2. National Fuel Gas Code Z223.1 or CSA B149.1 Installa-
tion Code.
3. Local gas utility requirements.
4. Local plumbing and waste water codes and other appli-
cable local codes.
Refer to Table 1 for unit application data and to Tables 3 and
4 for gas heat application data.
If components are to be added to a unit to meet local codes,
they are to be installed at the dealer's and/or the customer's
expense.
Size of unit for proposed installation should be based on heat
loss/heat gain calculations made in accordance with industry
recognized procedures identified by the Air Conditioning
Contractors of America.
LOCATION
Use the following guidelines to select a suitable location for
these units.
1. Unit is designed for outdoor installation only.
2. Condenser must have an unlimited supply of air. Where
a choice of location is possible, position unit on either
north or east side of building.
FIGURE 1: PRODUCT NOMENCLATURE
TABLE 1: UNIT APPLICATION DATA
Voltage Variation
Min. / Max.1
1. Rated in accordance with ARI Standard 110, utilization
range “A”.
208/230V2
2. “T1” transformer primary tap must be moved from the
230 volt connection to the 208 volt connection for low
voltage applications of 208 volt and below
187 / 253
460V 414 / 504
Wet Bulb Temperature (°F) of Air on
Evaporator Coil, Min. / Max. 57 / 72
Dry Bulb Temperature (°F) of Air on
Condenser Coil, Min.3/ Max.
3. A low ambient accessory is available for operation
down to 0 °F.
45 / 120 Excessive exposure of this furnace to contami-
nated combustion air may result in equipment
damage or personal injury. Typical contaminates
include: permanent wave solution, chlorinated
washes and cleaners, chlorine based swimming
pool chemicals, water softening chemicals, carbon
tetrachloride, halogen type refrigerants, cleaning
solvents (e.g. perchloroethylene), printing inks,
paint removers, varnishes, hydrochloric acid,
cements and glues, antistatic fabric softeners for
clothes dryers, masonry acid washing materials.

035-18579-001-B-0103
Unitary Products Group 5
3. For ground level installation, a level pad or slab should
be used. The thickness and size of the pad or slab used
should meet local codes and unit weight. Do not tie the
slab to the building foundation.
4. For roof top installation, be sure the structure will support
the weight of the unit plus any field installed components.
Unit must be installed on a level roof curb or appropriate
angle iron frame providing adequate support under the
compressor/condenser section.
5. Maintain level tolerance of unit to 1/8" maximum.
CLEARANCES
All units require certain clearances for proper operation and
service. Refer to Table 10 for the clearances required for
combustion, construction, servicing and proper unit opera-
tion.
RIGGING OR HANDLING
Care must be exercised when moving the unit. Do not
remove any packaging until the unit is near the place of
installation. Rig unit with slings placed under the unit.
Spreader bars of sufficient length should be used across the
top of the unit.
Units may also be moved or lifted with a fork-lift. Slotted
openings in the skid are provided for this purpose. Forks
must pass completely through the base.
Refer to Table 2 for unit weights and to Figure 2 for approxi-
mate center of gravity.
DUCT WORK
These units are adaptable to downflow use as well as rear
supply and return air duct openings. To convert to downflow,
use the following steps:
1. Remove the duct covers found in the bottom return and
supply air duct openings. There are four (4) screws
securing each duct cover (save these screws to use
later).
2. Install the duct covers, removed in step one, to the rear
supply and return air duct openings. Secure with the four
(4) screws used in step one.
3. Seal duct covers with silicone caulk.
Do not permit overhanging structures or shrubs to
obstruct the condenser air discharge, combustion
air inlet or vent outlet.
Before lifting a unit, make sure that its weight is
distributed equally on the cables so that it will lift
evenly.
TABLE 2: UNIT WEIGHTS AND CENTER OF
GRAVITY
UNIT
SIZE
SHIPPING
WEIGHT
(LBS.)
OPERATING
WEIGHT
(LBS.)
CORNER WEIGHTS
(LOCATION, LBS.)
“A” “B” “C” “D”
036 400 395 100 96 98 101
048 475 470 133 130 102 104
FIGURE 2: UNIT CENTER OF GRAVITY
"A"
"B"
"C"
"D"
49-1/8 25 25
47-1/4
FRONT
OF
UNIT
CENTER OF
GRAVITY

035-18579-001-B-0103
6Unitary Products Group
Duct work should be designed and sized according to the
methods of the Air Conditioning Contractors of America
(ACCA), as set forth in their Manual D.
A closed return duct system shall be used. This shall not pre-
clude use of economizers or ventilation air intake. Flexible
joints may be used in the supply and return duct work to min-
imize the transmission of noise.
NOTE: Be sure to note supply and return openings.
Refer to Figure 8 and 9 for information concerning rear and
bottom supply and return air duct openings.
ROOF CURB
On applications when a roof curb is used, the unit must be
positioned on the curb so the front of the unit is tight against
the curb.
FILTERS
Single phase units are shipped without a filter or filter racks
and is the responsibility of the installer to secure a filter in the
return air ductwork or install a Filter/Frame Kit (1FF0110).
A filter rack and a high velocity filters are standard on three
phase units.
Filters must always be used and must be kept clean. When
filters become dirt laden, insufficient air will be delivered by
the blower, decreasing your units efficiency and increasing
operating costs and wear-and-tear on the unit and controls.
Filters should be checked monthly especially since this unit is
used for both heating and cooling.
CONDENSATE DRAIN
A condensate trap is recommended to be installed in the con-
densate drain. The plumbing must conform to local codes.
Use a sealing compound on male pipe threads. Install the
condensate drain line (NPTF) to spill into an open drain.
SERVICE ACCESS
Access to all serviceable components is provided by the fol-
lowing removable panels:
• Blower compartment
• Gas control/electrical service access
Refer to Figure 7 for location of these access panels and min-
imum clearances in Table 10.
THERMOSTAT
The room thermostat should be located on an inside wall
approximately 56" above the floor where it will not be subject
to drafts, sun exposure or heat from electrical fixtures or
appliances. Follow manufacturer's instructions enclosed with
the thermostat for general installation procedure. Four color
coded insulated wires (minimum #18 AWG) should be used
to connect thermostat to unit. See Figure 3.
POWER AND CONTROL WIRING
Field wiring to the unit must conform to provisions of the cur-
rent N.E.C. ANSI/NFPA No. 70 or C.E.C. and/or local ordi-
nances. The unit must be electrically grounded in accordance
with local codes or, in their absence, with the N.E.C./C.E.C.
Voltage tolerances which must be maintained at the com-
pressor terminals during starting and running conditions are
indicated on the unit Rating Plate and Table 8.
The wiring entering the cabinet must be provided with
mechanical strain relief.
A fused disconnect switch should be field provided for the
unit. If any of the wire supplied with the unit must be replaced,
replacement wire must be of the type shown on the wiring
diagram.
Electrical line must be sized properly to carry the load. Each
unit must be wired with a separate branch circuit fed directly
from the meter panel and properly fused.
Refer to Figure 4 for typical field wiring and to the appropriate
unit wiring diagram for control circuit and power wiring infor-
mation.
When fastening duct work to the side duct flanges
on the unit, insert the screws through the duct
flanges only. Do not insert the screws through the
casing. Outdoor ductwork must be insulated and
waterproofed.

035-18579-001-B-0103
Unitary Products Group 7
COMPRESSORS
Units are shipped with compressor mountings factory-
adjusted and ready for operation.
FIGURE 3: FIELD WIRING DIAGRAM CONTROL WIRING
R
G
W
R
G
C
YY
W
C
P R O G R A M A B L E
T H E R M O S T A T O N L Y
* *
*
* = M i n i m u m w i r e s i z e o f 1 A W G
w i r e s h o u l d b e u s e d f o r a l l
f i e l d i n s t a l l e d 2 4 v o l t w i r e .
T H E R M O S T A T U N I T T E R M I N A L S T R I P
N O T E :
H E A T A N T I C I P A T O R
S H O U L D B E S E T A T 0 . 3 5
A M P S F O R A L L M O D E L S .
2 4 V O L T
T R A N S F O R M E R
FIGURE 4: POWER WIRING FIELD DIAGRAM
G R O U N D
L U G
R E F E R T O E L E C T R I C A L
D A T A T A B L E S T O S I Z E
T H E D I S C O N N E C T
F I E L D - S U P P L I E D
D I S C O N N E C T
C O N T A C T O R
F I E L D - S U P P L I E D
D I S C O N N E C T
C O N T A C T O R
G R O U N D
L U G R E F E R T O E L E C T R I C A L
D A T A T A B L E S T O S I Z E
T H E D I S C O N N E C T
S I N G L E
PHASE
P O W E R
S U P P L Y
T H R E E
PHASE
P O W E R
S U P P L Y
Do not loosen compressor mounting bolts.

035-18579-001-B-0103
8Unitary Products Group
TABLE 3: NATURAL GAS APPLICATION DATA
AVAILABLE ONMODELS INPUT CAPACITY
(MBH)1
OUTPUT CAPACITY
(MBH)
GAS RATE2
FT.3/HR.
NUMBER OF
BURNERS
TEMP. RISE ºF A FULL
INPUT3
MIN.MAX.
3 TON 45 36 42 2 25 55
3 TON 70 56 65 3 25 55
4 TON 80 64 74 3 25 55
3 TON 90 72 84 4 30 60
4 TON 108 87 43 4 30 60
4 TON 135 108 126 5 35 65
1. Heating capacity valid for elevations up to 2000 feet above sea level. For elevations above 2,000 feet, rated capacity should be
reduced by 4% for each 1,000 feet above sea level.
2. Based on 1075 BTU/Ft.3.
3. The air flow must be adequate to obtain a temperature rise within the range shown. Continuous return air temperature should not
be below 55°F.
TABLE 4: PROPANE1(LP) GAS APPLICATION DATA
AVAILABLE ON
MODELS
INPUT CAPACITY
(MBH)2
OUTPUT CAPACITY
(MBH)
GAS RATE3
FT.3/HR.
NUMBER OF
BURNERS
TEMP. RISE ºF A FULL
INPUT4
MIN.MAX.
3 TON 45 36 18 2 25 55
3 TON 70 56 28 3 25 55
4 TON 80 64 32 3 25 55
3 TON 90 72 36 4 30 60
4 TON 108 87 43 4 30 60
4 TON 135 108 54 5 35 65
1. Propane applications are accomplished by field installation of a Propane Conversion Accessory, Model 1NP0805.
2. Heating capacity valid for elevations up to 2,000 feet above sea level. For elevations above 2,000 feet, rated capacity should be
reduced by 4% for each 1,000 feet above sea level.
3. Based on 2500 BTU/Ft.3.
4. The air flow must be adequate to obtain a temperature rise within the range shown. Continuous return air temperatures should not
be below 55°F.

035-18579-001-B-0103
Unitary Products Group 9
GAS PIPING
Proper sizing of gas piping depends on the cubic feet per
hour of gas flow required, specific gravity of the gas and the
length of run. National Fuel Gas Code Z223.1 or CSA B149.1
should be followed in all cases unless superseded by local
codes or gas company requirements. Refer to Tables 5 and
6.
The heating value of the gas may differ with locality. The
value should be checked with the local gas utility.
NOTE: There may be a local gas utility requirement specify-
ing a minimum diameter for gas piping. All units require a 1/2
inch pipe connection at the gas valve.
GAS CONNECTION
The gas supply line can be routed through the hole located
on the left side of the unit. Refer to Figure 7 to locate these
access openings. Typical supply piping arrangements are
shown in Figure 5.
Gas piping recommendations:
1. A drip leg and a ground joint union must be installed in
the gas piping.
2. When required by local codes, a manual shut-off valve
may have to be installed outside of the unit.
3. Use wrought iron or steel pipe for all gas lines. Pipe dope
should be applied sparingly to male threads only.
FIGURE 5: EXTERNAL SUPPLY CONNECTION
EXTERNAL SHUT-OFF
1 / 2 x 1 / 2 G A S C O C K
1 / 2 x 1 / 2 U N I O N
A U T O M A T I C
G A S V A L V E
D R I P L E G
1 / 2 - 1 4 N P
T
TABLE 5: NATURAL GAS PIPE SIZING CHART1
LENGTH
IN FEET
NOMINAL INCHES IRON PIPE SIZE
1/2” 3/4” 1” 1-1/4”
10 132 278 520 1,050
20 92 190 350 730
30 73 152 285 590
40 63 130 245 500
50 56 115 215 440
60 50 105 195 400
70 46 96 180 370
80 43 90 170 350
90 40 84 160 320
100 38 79 150 305
1. Maximum capacity of pipe in cubic feet of gas per hour
(based upon a pressure drop of 0.3 inch water column
and 0.6 specific gravity gas).
TABLE 6: PROPANE (LP) GAS PIPE SIZING
CHART1
1. Maximum capacity of pipe in thousands of BTU per
hour (based upon a pressure drop of 0.5 inch water col-
umn).
LENGTH
IN FEET
NOMINAL INCHES IRON PIPE SIZE
1/2” 3/4” 1” 1-1/4”
10 275 567 1,071 2,205
20 189 393 732 1,496
30 152 315 590 1,212
40 129 267 504 1,039
50 114 237 448 913
60 103 217 409 834
70 96 196 378 771
80 89 185 346 724
90 83 173 322 677
100 78 162 307 630

035-18579-001-B-0103
10 Unitary Products Group
4. All piping should be cleaned of dirt and scale by ham-
mering on the outside of the pipe and blowing out the
loose dirt and scale. Before initial start-up, be sure that
all of the gas lines external to the unit have been purged
of air.
5. The gas supply should be a separate line and installed in
accordance with all safety codes as prescribed under
Limitations. After the gas connections have been com-
pleted, open the main shut-off valve admitting normal
gas pressure to the mains. Check all joints for leaks with
soap solution or other material suitable for the purpose.
NEVER USE A FLAME.
6. The furnace must be isolated from the gas supply piping
system by closing its individual manual shut-off valve
during any pressure testing of the gas supply piping sys-
tem at test pressures equal to or less than 1/2 psig (3.48
kPa).
FLUE VENT HOOD
The flue vent hood with screen is not shipped attached. This
hood must be installed to assure proper unit operation. The
hood must be fastened to the outside of the side gas control/
electrical compartment with the screws provided in the bag
attached to the inside of the gas control/electrical compart-
ment, see Figure 6.
If flexible stainless steel tubing is allowed by the
authority having jurisdiction, wrought iron or steel
pipe must be installed at the gas valve and extend
a minimum of two (2) inches outside of the unit
casing.
Natural gas may contain some propane. Propane,
being an excellent solvent, will quickly dissolve
white lead or most standard commercial com-
pounds. Therefore, a special pipe dope must be
applied when wrought iron or steel pipe is used.
Shellac base compounds such as gaskoloc or sta-
lastic, and compounds such as rectorseal # 5,
Clyde’s orJohn Crane may be used.
Flue hood surfaces may be hot.
FIGURE 6: FLUE VENT OUTLET AIR HOOD
The flue exhaust hood must be properly installed
and within the recommended clearances. Further
communications and action must be given to the
home or building owner(s) to eliminate any unau-
thorized human contact around this area during
the heating cycle. Flue hood surface and the
immediate area reach high temperatures during
the heating cycle.
V E N T O U T L E T S C R E E N
F L U E V E N T O U T L E T
A I R H O O D

035-18579-001-B-0103
Unitary Products Group 11
TABLE 7: PHYSICAL DATA
MODEL DNP
036 048
EVAPORATOR BLOWER CENTRIFUGAL BLOWER (Dia. x Wd. in.) 11 x 10 12 x 11
FAN MOTOR HP 3/4 1
EVAPORATOR COIL
ROWS DEEP 33
FINS PER INCH 13 16
FACE AREA (Sq. Ft.) 3.5 4.5
CONDENSER FAN
PROPELLER DIA. (in.) 22 22
FAN MOTOR HP 1/4 1/3
NOM. CFM TOTAL 2,400 3,000
CONDENSER COIL
ROWS DEEP 22
FINS PER INCH 20 20
FACE AREA (Sq. Ft.) 11.7 14.7
CHARGE REFRIGERANT 22 (lbs./oz.) 6 / 12 8 / 4
FILTER FACE AREA (Sq. Ft.) Size (Nominal) 2.6/20x20 3.3/20x12
(2 Reqd.)
FURNACE SECTION
NATURAL GAS BURNER ORIFICE NO.
(Drill Size) 43 40
PROPANE BURNER ORIFICE NO.
(Drill Size) 55 53
GAS CONNECTION SIZE 1/2 NPTI 1/2 NPTI
COMPRESSOR HERMETIC TYPE, (Qty. = 1) Scroll Scroll
TABLE 8: ELECTRICAL DATA
MODEL
DNP POWER SUPPLY
VOLTAGE
LIMITATIONS1COMPRESSOR COND.
FAN
MOTOR,
FLA
SUPPLY
AIR
BLOWER
MOTOR
FLA
MINIMUM
CIRCUIT
AMPACITY
MAX.
FUSE
SIZE,
AMPS2
MAX.
HACR
BREAKER
SIZE,
AMPS
UNIT
POWER
FACTOR
TRANSFORMER
SIZE (VA)
MIN. MAX. RLA LRA
036 208/230-1-60 187 253 17.2 88 1.1 6.8 29.4 45 45 0.96 40
036 208/230-3-60 187 253 11.4 77 1.1 6.8 22.2 30 30 0.96 75
036 460-3-60 414 504 5.7 39 0.6 6.8 14.8 20 20 0.96 75
048 208/230-1-60 187 253 23.4 126 1.9 9.1 39.5 60 60 0.96 40
048 208/230-3-60 187 253 13 93 1.9 9.1 26.5 35 35 0.96 75
048 460-3-60 414 504 6.4 46.5 1.0 9.1 18.4 25 25 0.96 75
1. Rated in accordance with ARI Standard 110, utilization range “A”.
2. Dual element, time delay type.

035-18579-001-B-0103
12 Unitary Products Group
FIGURE 7 : UNIT DIMENSIONS - FRONT
3 - 3 / 4
2 - 1 / 2
4 7 - 1 / 4
1 - 1 / 2
2 - 5 / 8
3 - 1 / 3
5 - 3 / 8
1 1 1 2 - 3 / 4 4 9 - 1 / 8
A
2 - 3 / 8
V E N T A I R O U T L E T H O O D
L O W E R S E R V I C E
A C C E S S C O M P A R T M E N T
P A N E L
G A S S U P P L Y 1 - 1 / 4 " D I A .
H O L E ( 1 / 2 " N P T I
C O N N E C T I O N )
U N I T C O N D E N S A T E
C O N N E C T I O N 3 / 4 " N P T I
( T R A P R E C O M M E N D E D )
H I G H V O L T A G E
C O N N . 1 - 3 / 8 " D I A .
K N O C K O U T
H I G H V O L T A G E
C O N N . 7 / 8 " D I A .
K N O C K O U T
G A S S U P P L Y 1 - 1 / 4 " D I A .
K N O C K O U T ( 1 / 2 " N P T I
C O N N E C T I O N )
L O W V O L T A G E C O N N .
1 - 3 / 8 " D I A . K N O C K O U T
X 7 / 8 " H O L E
C O N D E N S E R C O I L
R E F R I G E R A N T
C O N N E C T I O N S
C O M U S T I O N A I R
I N L E T L O U V E R S
F R O N T
G A S / E L E C T R I C C O N T R O L
S E R V I C E A C C E S S
C O M P A R T M E N T P A N E L
( O V E R A L L )
( O V E R A L L )
All dimensions are in inches.
They are subject to change with-
out notice. Certified dimensions
will be provided upon request.
TABLE 9: UNIT DIMENSIONS FRONT
UNIT SIZE DIMENSION
“A” “B”
036 33-1/2 18-1/4
048 41-1/2 23-1/8
TABLE 10: UNIT MINIMUM CLEARANCES12
1. A 1” clearance must be provided between any combus-
tible material and the supply air ductwork.
2. The products of combustion must not be allowed to
accumulate within a confined space and recirculate.
CLEARANCES
FRONT 36”
BACK 0”
LEFT SIDE (Filter-Access) 24”
RIGHT SIDE 12”
BELOW UNIT3
3. Units may be installed on combustible floors made from
wood or class A, B, or C roof covering material.
0”
ABOVE UNIT 4
4. Units must be installed outdoors. Overhanging struc-
tures or shrubs should not obstruct condenser air dis-
charge outlet.
36” (For Condenser Air Discharge

035-18579-001-B-0103
Unitary Products Group 13
FIGURE 8: UNIT DIMENSIONS - FRONT & BOTTOM
26-3/4
6
4-5/8
8-7/8 11-7/8 19-1/4
HIGH VOLTAGE
CONN. 1-3/32" DIA.
KNOCKOUT FRONT
CONDENSATE
DRAIN 3/4"' NPTI
GAS SUPPLY 1-5/8" DIA.
KNOCKOUT (1/2" NPTI
CONNECTION)
LOW VOLTAGE CONN.
" DIA. KNOCKOUT
/87
FIGURE 9: UNIT DIMENSIONS - BACK & BOTTOM
1 - 3 / 4
1 5
2 9 - 9 / 1 6
1 5
3 - 1 / 2
1 - 3 / 4
1 - 3 / 4
1 5
4
1 4 - 1 / 2
3 - 1 / 2
3 - 3 / 8
1 4 - 1 / 2
2 8 - 3 / 8
1 4 - 1 / 2
C O N D E N S E R
C O I L
O T T O M S U P P L Y
A I R O P E N I N G
O T T O M R E T U R N
A I R O P E N I N G
S I D E R E T U R N
A I R O P E N I N G
S I D E S U P P L Y
A I R O P E N I N G
A C K

035-18579-001-B-0103
14 Unitary Products Group
SEQUENCE OF OPERATION
The unit is controlled by a conventional four wire heating/
cooling thermostat common to this class of equipment.
HEATING
When the thermostat calls for HEAT, the thermostat terminal
W is energized, energizing the combustion air blower.
After airflow is established, the air proving switch closes, the
hot surface ignitor is energized and the pilot valve opens
igniting the pilot flame.
The flame rod senses a flame and de-energizes the ignitor
opening the main gas valve and the main burners light.
30 seconds after the main burners light the circulating fan is
energized at the heating speed.
When the thermostat is satisfied, terminal W is de-energized,
de-energizing the ignition system closing the gas valve.
After a 5 second postpurge timing period, the combustion air
blower is de-energized and the heat fan off timing begins.
When this field selected heat fan off timing is completed the
circulating fan is de-energized.
If the primary, rollout and auxiliary limit switches open, the
thermostat and ignition system is de-energized and the gas
valve closes. The combustion blower and the circulating fan,
at heat speed, are energized.
The combustion blower remains energized for the 5 second
postpurge timing period if the primary, rollout and auxiliary
limit switches remake the contact (the rollout and auxiliary
limit switches must be manually reset). The circulating fan
remains energized for the selected heat delay off timing.
Normal operation of the system resumes.
COOLING
When the thermostat calls for COOL, the thermostat termi-
nals G and Y are energized signaling the compressor and
outdoor fan to run.
After a cool fan on delay timing of 2 seconds, the circulating
fan is energized at cooling speed.
When the thermostat is satisfied, terminals G and Y are de-
energized, de-energizing the compressor and outdoor fan.
After a cool fan off delay timing of 30 seconds the circulating
fan is de-energized.
CIRCULATING FAN
When the thermostat calls for FAN, the thermostat terminal G
is energized signaling the circulating fan to run at the heat
speed 2 seconds after the G terminal is energized.
If a call for HEAT occurs, the circulating fan continues to run
at the heat speed.
If a call for COOL occurs, the circulating fan switches to cool
speed after a 4 second delay.
When the thermostat ends the call for FAN, the thermostat
terminal G is de-energized, de-energizing the circulating fan.
START-UP
PRE-START CHECK LIST
Complete the following checks before starting the unit.
1. Check the type of gas being supplied. Be sure that it is
the same as listed on the unit nameplate.
2. Make sure that the vent outlet air hoods has been prop-
erly installed.
OPERATING INSTRUCTIONS
1. STOP! Read the information on the unit safety label.
2. Set the thermostat to the OFF position.
3. Turn off all electrical power to the unit.
4. DO NOT try to light the burners by hand. This appliance
is equipped with an ignition device which automatically
lights the burners.
5. Remove the access panel.
6. Turn the gas valve switch to the OFF position.
7. Wait five (5) minutes to clear out any gas. If you then
smell gas, STOP! Follow B in the information on the unit
safety label. If you don't smell gas, go to the next step.
8. Turn the gas valve switch to the ON position.
9. Replace the control access panel.
10. Turn on all electric power to the unit.
11. Set the thermostat to the desired setting.
12. If the unit will not operate, follow the instructions To Turn
Off Gas To Appliance and call your service technician or
gas supplier.

035-18579-001-B-0103
Unitary Products Group 15
TO TURN OFF GAS TO UNIT
1. Set the thermostat to the OFF position.
2. Turn off all electric power to the appliance if service is to
be performed.
3. Remove the control access panel.
4. Turn the gas valve switch to the OFF position. DO NOT
FORCE.
5. Replace the control access panel.
POST-START CHECK LIST (GAS)
After the entire control circuit has been energized and the
heating section is operating, make the following checks:
1. Check for gas leaks in the unit piping as well as the sup-
ply piping.
2. Check for correct manifold gas pressures. See Checking
Gas Input.
3. Check the supply gas pressure. It must be within the lim-
its shown on rating nameplate. Supply pressure should
be checked with all gas appliances in the building at full
fire. At no time should the standby gas line pressure
exceed 10.5", nor the operating pressure drop below
4.5" for natural gas units. If gas pressure is outside these
limits, contact the local gas utility for corrective action.
MANIFOLD GAS PRESSURE ADJUSTMENT
Small adjustments to the gas flow may be made by turning
the pressure regulator adjusting screw on the automatic gas
valve. Refer to Figure 10.
Adjust as follows:
1. Remove the cap from the valve body. See Figure 11 for
location.
2. To decrease the gas pressure, turn the adjusting screw
counterclockwise.
3. To increase the gas pressure, turn the adjusting screw
clockwise.
NOTE: The correct manifold pressure for natural gas fur-
naces is 3.5 IWG. The correct manifold pressure for
propane (LP) is 10.0 IWG.
BURNER INSTRUCTIONS
To check or change the burners, CLOSE THE MAIN MAN-
UAL SHUT-OFF VALVE AND SHUT OFF ALL POWER TO
THE UNIT.
1. Remove the two (2) #8 screws holding each burner in
place.
2. Remove the burner assembly from the manifold assem-
bly by moving the burner assembly forward, turn at an
angle and pull back.
3. Burners are now accessible for service.
HOT SURFACE PILOT INSTRUCTIONS
To adjust the pilot flame:
FIGURE 10: GAS VALVE - FRONT
M A N U A L G A S
S W I T C H
( S H O W N I N " O F F
P O S I T I O N )
C O N T R O L
E L E C T R I C A L
C O N N E C T I O N
I G N I T O R E L E C T R I C A L
C O N N E C T I O N
M A N I F O L D
P R E S S U R E
T A P
G R O U N D
T E R M I N A L
1 / 2 - 1 4 N P T
( O U T L E T )
P I L O T G A S
C O N N E C T I O N
P I L O T
A D J U S T M E N T
FIGURE 11: GAS VALVE - REAR
FIGURE 12: PROPER FLAME ADJUSTMENT
V E N T P R E S S U R E L I M I T E R
1 / 2 - 1 4 N P T
( I N L E T )
L I N E P R E S S U R E T A P
M A N I F O L D P R E S S U R E
A D J U S T M E N T
( R E M O V E C A P )
3 / 8

035-18579-001-B-0103
16 Unitary Products Group
1. Remove the pilot adjustment cover screw.
2. Adjust the pilot adjustment screw to achieve the proper
pilot flame.
3. The pilot flame should envelope 3/8 inch of the end of
the flame sensor and not contain any yellow color, see
Figure 12.
4. Replace the pilot adjustment cover screw after the pilot
flame is set.
To check, adjust or remove the hot surface pilot assembly,
CLOSE THE MAIN MANUAL SHUT-OFF VALVE AND SHUT
OFF ALL POWER TO THE UNIT.
1. Disconnect the wiring from the gas valve to the hot sur-
face pilot assembly.
2. Remove the two (2) #8 screws holding the hot surface
pilot assembly in place.
3. Remove the hot surface pilot assembly.
To remove the hot surface ignitor and flame sensor assem-
bly:
1. Remove the clip attaching the ignitor and sensor assem-
bly as shown in Figure 13.
2. Lift the pilot and sensor from the assembly. Care must be
taken not to damage the pilot or sensor when removing
this assembly.
ADJUSTMENT OF TEMPERATURE RISE
After about 20 minutes of operation, determine the furnace
temperature rise. Take readings of both the return air and the
heated air in the ducts about six feet from the furnace where
they will not be affected by radiant heat.
The temperature rise (or temperature difference between the
return air and the heated air from the furnace) must lie within
the range shown on the rating plate and the data in Tables 3
and 4.
After the temperature rise has been determined, the CFM can
be calculated as follows:
DIRECT DRIVE BLOWER
All units have direct drive, constant CFM blower motors.
Refer to the unit wiring diagram, Table 1 for the desired cool-
ing CFM. Heating CFM is preset at the factory.
CHECKING GAS INPUT
NATURAL GAS
1. Turn off all other gas appliances connected to the gas
meter.
2. With the furnace turned on, measure the time needed for
one revolution of the hand on the smallest dial on the
meter. A typical gas meter usually has a 1/2 or a 1 cubic
foot test dial.
3. Using the number of seconds for each revolution and the
size of the test dial increment, find the cubic feet of gas
consumed per hour from Table 11.
If the actual input is not within 5% of the furnace rating with
allowance being made for the permissible range of the regu-
lator setting, replace the orifice spuds with spuds of the
proper size.
NOTE: To find the BTU input, multiply the number of cubic
feet of gas consumed per hour by the BTU content
of the gas in your particular locality. (Contact your
gas company for this information since it varies
widely from city to city.)
FIGURE 13: IGNITOR AND FLAME SENSOR
ASSEMBLY
Degrees F Temp Rise BTUH Output
1.08 CFM×
------------------------------------
=
OR
CFM BTUH Output
1.08 Degrees F Temp Rise×
-------------------------------------------------------------------------
=

035-18579-001-B-0103
Unitary Products Group 17
TABLE 11: GASE RATE - CUBIC FEET PER HOUR1
SECONDS
FOR ONE
REV.
SIZE OF TEST DIAL
1/2 CU. FT. 1 CU. FT.
10 180 360
12 150 300
14 129 257
16 113 225
18 100 200
20 90 180
22 82 164
24 75 150
26 69 138
28 64 129
30 60 120
32 56 113
34 53 106
36 50 100
38 47 95
40 45 90
42 43 86
44 41 82
46 39 78
48 37 75
50 36 72
52 35 69
54 34 67
56 32 64
58 31 62
60 30 60
1. EXAMPLE: By actual measurement, it takes 38 seconds for the hand on the 1-cubic foot dial to make a revolution with just a
100,000 BTUH furnace running. Using this information, locate 28 seconds in the first column of Table 11. Read across to the col-
umn headed “1 Cubic Foot,” where you will see that 95 cubic feet of gas per hour are consumed by the furnace at that rate. Multi-
ply 95 x 1050 (the BTU rating of the gas obtained from the local gas company). The result is 99,750 BTUH, which is close to the
100,000 BTUH rating of the furnace.

035-18579-001-B-0103
18 Unitary Products Group
TROUBLE SHOOTING
NOTE: Before troubleshooting, familiarize yourself with the
START-UP and CHECKOUT procedures.
Troubleshooting of components necessitates
opening the electrical control box with the power
connected to the unit. Use extreme care when
working with the live circuits! Check the unit name-
plate for the correct line voltage and set the volt
meter to the correct range before making any con-
tact with line terminals.

035-18579-001-B-0103
Unitary Products Group 19
FIGURE 14: TYPICAL WIRING DIAGRAM (208/230-1-60 POWER SUPPLY)

035-18579-001-B-0103
20 Unitary Products Group
FIGURE 15: TYPICAL WIRING DIAGRAM (208/230-3-60 POWER SUPPLY)