Carrier 48XP024040300 User Manual CENTRAL PACKAGE Manuals And Guides L0907192
CARRIER Package Units(both units combined) Manual L0907192 CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides
User Manual: Carrier 48XP024040300 48XP024040300 CARRIER CENTRAL PACKAGE - Manuals and Guides View the owners manual for your CARRIER CENTRAL PACKAGE #48XP024040300. Home:Heating & Cooling Parts:Carrier Parts:Carrier CENTRAL PACKAGE Manual
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®
Turn to the Expertg
Installation
Instructions
NOTE:
Read the entire instruction manual before starting the
installation.
NOTE:
Installer: Make sure the Owner's Manual and Service
Instructions are left with the unit after installation,
TABLE
OF CONTENTS
SAFETY CONSIDERATIONS
.........................
INTRODUCTION
...................................
RECEIVING AND INSTALLATION .................
Check Equipment ..................................
Identify Unit ....................................
Inspect Shipment .................................
Provide Unit Support ...............................
Roof Curb ......................................
Slab Mount .....................................
Ground Mount ..................................
Field Fabricate Ductwork ............................
Provide Clearances .................................
Rig and Place Unit .................................
Connect Condensate Drain ...........................
Install Flue Hood ...................................
Install Gas Piping ..................................
Install Duct Connections .............................
Configuring Units for Downflow (Vertical)
Discharge ......................................
Install Electrical Connections ........................
High-Voltage Connections ........................
Special Procedures for 208-V Operation ..............
Control Voltage Connections .......................
Easy Select
. ..................................
Transformer Protection ...........................
PRE-START-UP
...................................
START-UP .....................................
Check for Refrigerant Leaks .........................
Unit Sequence of Operation .........................
48XP Sequence of Operation ......................
Start-Up Heating & Make Adjustments ................
Check Heating Control ...........................
Check Gas Input ................................
Adjust Gas Input ................................
Check Burner Flame .............................
Airflow and Temperature Rise ......................
Heating Sequence of Operation .....................
Limit Switches .................................
Rollout Switch .................................
Start-Up Cooling & Make Adjustments ................
Checking Cooling Control Operation ................
Checking & Adjusting Refrigerant Charge ............
Indoor Airflow and Airflow Adjustments .............
MAINTENANCE ................................
Air Filter ........................................
Evaporator Blower and Motor ........................
Flue Gas Passageways ..............................
TM
PAGE
1
2
2-13
2
2
2
2
2
2
2
2
2
4
6
7
7
9
9
10
10
11
11
11
14
14
14-21
14
14
14
15
15
15
15
16
16
16
16
17
17
17
21
21
22-25
22
22
22
C99088
Fig. 1 - Unit 48XP
Combustion Air Blower ............................
Limit Switch .....................................
Burner Ignition ...................................
Main Burners ....................................
Condenser Coil, Evaporator Coil, & Condensate
Drain Pan .......................................
Condenser Fan ...................................
Electrical Controls and Wiring .......................
Refrigerant Circuit .................................
Gas Input ........................................
Evaporator Airflow ................................
Puron® Items ....................................
TROUBLESHOOTING
..............................
START-UP CHECKLIST ............................
SAFETY
Improper
installation,
23
23
23
23
23
24
24
24
24
24
25
26
26
CONSIDERATIONS
adjustment,
alteration,
service
maintenance,
or use can cause explosion,
fire, electrical
shock,
or other
conditions
which may cause death, personal injury, or property
damage.
Consult a qualified
installer,
service agency, or your
distributor
or branch for information
or assistance. The qualified
installer or agency must use factory-authorized
kits or accessories
when modifying
this product. Refer to the individual
packaged with the kits or accessories when installing.
instructions
Follow all safety codes. Wear safety glasses, protective
clothing,
and work gloves. Have a fire extinguisher
available. Read these
instructions
thoroughly
and follow
all warnings
or cautions
included
in literature
and attached
to the unit. consult
local
building
codes,
the current
editions
of the National
Fuel Gas Code
(NFGC)
NFPA
54/ANSI
Z223A,
andthe
(NEC) NFPA 70.
In Canada refer to the current
editions
National
Electrical
of the National
Code
Standards
of
Canada
CAN/CSA-BI49.1
and .2 Natural
Gas and Propane
Installation
codes, and Canadian Electrical Code CSA C22A
Recognize
safety
information.
This is the safety-alert
symbol
Z_
nearest
equipment
distribution
prevent loss
installation.
or damage,
Step 2 --
Provide
For
hurricane
leave
if any item
is missing.
packages
Engineering)
contact
distributor
Certificate
for details
ROOF
CURB
Install
accessory
signal
words
with curb (See Fig. 4). Install insulation,
cant strips,
flashing. Ductwork must be attached to curb.
the most serious hazards which will result in severe personal injury
or death. WARNING
signifies hazards which could result in personal injury or death. CAUTION
is used to identify unsafe practices which may result in minor
erty damage. NOTE is used
result in enhanced
installation,
personal injury or product and propto highlight
suggestions
which will
reliability,
roof curb in accordance
IMPORTANT:
critical
The
for a water
Failure to follow
injury or death.
result
in personal
mm)
warning
damage.
could
SHOCK
HAZARD
result
AND
A
qualified
installer
or
agency
must
use
factory-authorized
kits or accessories
when modifying
product.
slab, or directly
on the ground,
combination
for outdoor
if local codes
Models with an N in the fifth position of the model number are
dedicated
Low NOx units designed
for California
installations.
models
meet
the California
maximum
oxides
of nitrogen
(NOx) emissions
requirements
of 40 nanograms/joule
or less as
shipped from the factory and must be installed in California Air
Quality
Management
Districts
or any other regions
in North
America
where a Low NOx rule exists.
RECEIVING
Step 1 -- Check
IDENTIFY
AND
INSTALLATION
Equipment
UNIT
The unit model number and serial number are stamped on the unit
information
plate. Check this information
against shipping papers.
INSPECT
SHIPMENT
Inspect for shipping damage while unit is still on shipping pallet. If
unit appears to be damaged
or is torn loose from its anchorage,
have it examined
by transportation
inspectors
before
Forward
claim
papers
directly
to transportation
Manufacturer
is not responsible
for any damage incurred
Check
all
items
against
shipping
list.
Immediately
also can result in
information
removal.
company.
in transit.
notify
thick
with
as required.
pad that is a minimum
2 in. (51 mm)
The unit may be installed
above
either
grade.
of 4
The
on a slab or placed directly
if local codes permit. Place the unit
with gravel for condensate
discharge.
Field Fabricate
slab
on
level
on the
ground
Ductwork
flashing
and mastic
in accordance
Ducts passing through an unconditioned
and covered with a vapor barrier.
permit (See Fig. 4 for roof curb dimensions).
These
for additional
by local codes.
with counter
codes.
only
this
installation
(See Fig. 2 and 3 for unit dimensions).
All unit sizes
have return and discharge
openings
for both
horizontal
and
downflow
configurations,
and are factory
shipped
with
all
downflow
duct openings covered. Units may be installed either on
a cement
is
applications,
unit is provided
with flanges
on the horizontal
openings.
All ductwork
should be secured to the flanges. Insulate
and weatherproof
all external ductwork, joints, and roof openings
INTRODUCTION
a rooftop,
supplied
Secure all ducts to roof curb and building
structure
on vertical
discharge units. Do not connect ductwork
to unit. For horizontal
in personal
The 48XP unit (see Fig. 1) is a fully self-contained,
Category I gas heating/electric
cooling unit designed
curb
material
gasketing
slab except when required
GROUND MOUNT
Step 3 --
Failure to follow this
injury, death or property
to the roof
gasketing
applied
and
should be flush on the compressor
end of the unit (to allow
condensate
drain installation)
and should extend 2 in. (51 mm) on
the three remaining
sides of the unit. Do not secure the unit to the
ground,
prepared
ELECTRICAL
POISONING
unit
shipped
roofing,
air leaks and poor unit performance.
in. (102
Before installing or servicing system, always turn off and
tag lockout
main power to system.
There may be more
than one disconnect switch. Turn off accessory heater power
switch if applicable.
FIRE,
EXPLOSION,
CARBON
MONOXIDE
of the
Install
Place the unit on a solid, level concrete
could
with instructions
Curb should be level to within 1/4 in. (6 mm). This is necessary for
unit drain to function
properly.
Refer to accessory
roof curb
or operation.
HAZARD
this warning
seal.
with the roof curb. Improperly
installation
instructions
SLAB MOUNT
ELECTRICALSHOCK
gasketing
tight
and PE
if required.
When you see this symbol on the unit and in instructions
or manuals, be alert to the potential for personal injury. Understand
these
words:
DANGER,
WARNING,
and CAUTION.
These
are used with the safety-alert
symbol. DANGER
identifies
To
until
Unit Support
tie downs,
(Professional
office
all parts in original
the
with
space must
applicable
be insulated
If a plenum return is used on a vertical unit, the return should be
ducted through the roof deck to comply with applicable fire codes.
A minimum
clearance
is not required around ductwork.
Cabinet
return-air
static shall not exceed -.25 IN. W.C..
Step 4 --
Provide
Clearances
The required
minimum
operating
and service
in Fig. 2 and 3. Adequate
combustion,
air must be provided
in accordance
Combustion
and Ventilation,
of the
clearances
NFPA54/ANSI
Z223.1 or applicable provisions
code.
In Canada,
follow
section
8 of
Installation
Codes or applicable
IMPORTANT:
Do
provisions
not restrict outdoor
at either the outdoor-air
detrimental
to compressor
inlet
life.
or
are shown
ventilation
and condenser
with section 9.3, Air for
National
Fuel Gas Code
the
of local building
Can/CSA-BI49.1
of local building
airflow.
fan
code.
An air restriction
discharge
may
be
The condenser
fan pulls air through
the condenser
coil and
discharges
it through the top grille. Be sure that the fan discharge
does not recirculate to the condenser coil. Do not locate the unit in
either a corner or under an overhead
obstruction.
The minimum
clearance
overhang)
horizontal
(1219
under a partial overhang
(such as a normal
house
is 48-in. (1219 mm) above the unit top. The maximum
extension of a partial overhang must not exceed 48-in.
mm)
Do not place the unit where water,
ice, or snow from
an overhang
or roof will damage or flood the unit. Do not install the unit on
carpeting or other combustible
materials. The unit may be installed
on wood flooring or on Class A, B, or C roof covering materials.
106 o
[4 17]
208
_SXPO3OO4O/OGO
_SXP036060/090
CORNER
"1 ....
It
406
[16
UNIT
ELECTRICAL
CHARACTERISTICS
UNIT
_8XPO2_04O/OGO
230
I 60
WT
LBS
KG
340
154
208
230
i
60,
2081230
3 60
344
156
208
230
i
60,
208/230
3 60
368
167
REQ_RED
WEIGHT LBS/KG
2 ....
3....
4"
UNIT
HEIGHT
CENTER OF GRAVITY
"A"
368
40641160]
55881220]
38741i53]
4470[176]
50801200]
55561i4
68131
102146
119/54
030
52123
69/31
103/a7
120155
TO _ OF UNIT ............................
DUCT SIDE OF UNIT .........................................
SIDE OPPOSETE DUCTS.....................................
BOTTOM OF UNIT ..............................
FLUE PANEL ..............................................
036
55124
74133
110150
129158
NEC. REQUIRED CLEARANCES.
MILLIMETERS
[IN]
10668
[4200]
9140
[36 ODE
.......
i0668
@
t
_MINIMUM
DISTANCES:IF
INDOOR COIL
_UTDOOR
12192
[_800]
9140
[3600]
304 8 [1200]*
UNIT IS PLACED LESS THAN 3048
[1200]
FROM WALL
SYSTEM,THEN SYSTEM PERFORMANCE MAYBE COMPROMISED
DIMENSIONS
I
MILLIMETERS
[IN]
91_ O [3600]
91_0
[3600]
EVAP COIL ACCESS SIDE .......................
POWER ENTRY SIDE ........................................
(EXCEPT FOR NEC REQUIREMENTS)
UNIT TOP ...........................................
SIDE OPPOSITE DUCTS.....................................
DUCT PANEL ............................
t
D
[4200]
CLEARANCE FOR OPERATION AND SERVICINO
OUTDOOR
1533
[604]
44701176]
MILLIMETERS
[IN]
3556
[1400]
508
[200]
3556
[1400]
O0 [OOO]
9i44
[3600]
BETWEEN UNITS,
POWER ENTRY SIDE ........................
UNIT AND UNGROUNDED SURFACES, POWER ENTRY SIDE
UNIT AND BLOCK OR CONCRETE WALLS AND OTHER
GROUNDED SURFACES, DOWER ENTRY SIDE ...................
REQ_RED
O]
CLEARANCES TO COMBUSTIBLE MATL.
51123
805
[317]
Z
B[i_5]
024
5
DOE
MM/IN
Y
940,313702]
IN
[]
ARE IN
INCHES
COIL
TOP VIEW
m_
I
798
[S
5
44]
[4700]
[455]
FIELD ENTRY_
SERVICE
PORTS
i
_I156
FULL
LOUVER
222[088]
DEA
d_
i238
[487]
t
456 R
[1796]
INING
m_:_RN
3130
[1232]
i
[020]
[168]
_3265
[1285]
19
O[O 15] NPT
X 220
DEER
_83
[32
0
72]
LEFT SIDE VIEW
o>
2
COMPRESSOR, 8LOWER, GAS PARTITIO
& ELECTRICAL ACCESS PANEL
12263
[A828]
_724
[463]
a68
[184]
NPT
52 8
[208]
L
FRONT VIEW
898
[353]
[21 67]
GAS ENTRY
1222
[48_]
[285]
L__
L1177
!496
[98B]
[983]
RIGHT SIDE VIEW
REAR VIEW
48XP500006
WT
UNIT
HEIGHT
CENTER OF GRAVITY
"A"
Z
KG
230
1 60,
208/230
3 60
412
181
1091714298:
4953[195]
48XP048090/!15/i30
208
230
1 60,
208/R30
3 60
462
210
I1425[4498:
4953[195]
4476[176]
4572[180]
48XPO6009B/!lS!130
208
230
1 60,
208/230
3 60
507
230
119331469B:
533412/0]
5BBB[ROO]
4420[176]
"i ....
REO_PED
2 ....
3 ....
4"
CLEARANCES TO COMBUSTIBLE MATL.
82/37
124156
144/65
69/31
92/42
139/63
16R/73
TOP OF UNET .............................................
DUCT SEDE OF UNET .........................................
SIDE OPPOSITE DUCTS .....................................
BOTTOM OF UNET............................................
FLUE PANEL ...............................
76135
101146
152/69
178180
NEC. REQUIRED CLEARANCES.
042
62/28
048
060
NB721180]
MILLIMETERS
[IN]
3596
[1400]
508
[200]
3556
[1400]
OO [OOO]
914 4 [36 O0]
MILLIMETERS
[IN]
10668
[a20O]
9140
[3600]
BETWEEN UNITS,
POWER ENTRY SIDE .......................
UNIT AND UNGROUNDED SURFACES, POWER ENTRY SIBE ..........
UNIT AND BLOCK OR CONCRETE WALLS AND OTHER
GROUNDED SURFACES, POWER ENTRY SIDE ....................
REO_RED
t
805
[317]
733
[682]
1[ OUTBOOR
_MINIMUM
[i1
INDOOR
6OIL _.
I
\N
[i1
10668
t
[4200]
CLEARANCE FOR OPERATION AND ,SERVICING
MILLIMETERS
[IN]
9140
[3600]
914 O [3600]
EVAP COIL ACCESS SEDE ..................................
ROWER ENTRY SEDE ............................
(EXCEPT FOR NEC REQUIREMENTS)
oNIT TOP .......................................
SIDE OPPOSITE DUCTS .....................................
DUCT PANEL ..............................................
Y
ml
MM/IN
X
LBS
208
CORNER WEIGHT LBS/KG
4066
[1601]
UNIT
ELECTRICAL
CHARACTERISTICS
UNIT
48XP042060/090
860
[339]
12192
9140
3048
[4800]
[3600]
[1200]_
DESTANCES:ZF UNIT IS PLACED LESS THAN 3048
[1200]
FROM WALL
SYSTEM,THEN SYSTEM PERFORMANCE MAYBE COMPROMISED
DIMENSIONS
[]
IN
ARE IN
INCHES
TOP VIEW
m_
&
10906
[4294]
_1i63
[458]
FIELD ENTRY
SERVECE PORT
.=.
28 61113]
BIA
N 0
POWER ENTRY\
\
t_
• _
_°
FULL
LOUVER
FULL
LOUVER
EL
f
506
[19
_X_
BLOWER,
& ELECTRICAL
11231
[4422]
.
.
.
\
COMPRESSOR,
LEFT SIDE VIEW
SUPPLY
DUCT
93]
GAS SECTION _
ACCESS
[284]
PANEL
466
[i
84]
i422
[SGO]
FRONT VIEW
[016]
526
[R07]
[i3
83]
[1383]
872
[343]
RIGHT SIDE VIEW
REAR VIEW
48XP500009
>
g
J
base\
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_i!i!ii!ii!ii!ii!ii!i!!_!!_!!_!!_!i
_i!_iii_ii_ii_ii_ii_ii_ii_ii_ii_i!!!!!_!!_!!i!i!i!ii!ii!iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii!i!i!i!iiiiiiiiiiiiiiiiii_i_l_l
......
J
Screw
/
(NOTE
A)
*Gasketing
/
_
_'_v
.._
Wood \
Flashing.
field
II1_1
tl
II_s_n
I
Roofing
\
f'_'dsuPP'ied
--
_,
\
(f!eld I
ll_i!_ II
mate_al
IL
- tl_iill
/IS_!II
_li
supplied)
II-_Uuctwork /
II ,i_,dsupp,ed/
Roof Curb for Small Cabinet
Roof Curb for
Note A:When unit mounting screw is used
retainer bracket must also be used.
Large Cabinet
Note A:When unit mounting screw is used
retainer bracket must also be used.
Supply opening
(BxC)
445/16"
R/A
S/A
\,
\
Insulated
deck pan
-'---'-- GaSkec,tua_Ou
nd.
/
_
Gasket around
outer edge
\
C00076
CATALOG
NUMBER
A
IN. (MM)
B
IN. (MM)
CPRFCURB006A00
8 (203)
11 (279)
16-1/2
(419)
28-3/4
CPRFCURB007A00
14 (356)
11 (279)
16-1/2
(419)
28-3/4
UNIT SIZE
48XP024-036
CPRFCURB008A00
48XP042-060
8 (203)
14 (356)
CPRFCURB009A00
16-3/16
16-3/16
C
IN. (MM)
(411)
(411)
17-3/8
17-3/8
D
IN,
(441)
(441)
(MM)
(730)
(730)
40-1/4
(1022)
40-1/4
(1022)
NOTES:
1. Roof curb must be set up for unit being installed.
2.
Seal
3.
Roof
strip
4.
Attach
5.
Insulated
d.
When
curb
must
ductwork
panels:
unit
conditions.
be applied,
is made
to curb
1-in.
mounting
This
as required,
of 16-gauge
(flanges
(25 mm)
screw
bracket
to unit
being
installed.
steel.
of duct
thick
is used
is available
rest on curb).
fiberglass
(see Note
through
1 lb (.45
A), a retainer
kg)
density.
bracket
must
be used
as well.
This
bracket
Micrometl.
Fig. 4 - Roof Curb
Dimensions
must
also be used when
required
by
code
for hurricane
or seismic
Unit
SMALL CABINET
030
024
Ib
Rigging
Weight
kg
351
Ib
159
NOTE: See dimensional
036
kg
355
Unit
Ib
161
042
kg
379
Rigging
Weight
172
LARGE CABINET
048
060
Ib
kg
Ib
kg
Ib
kg
427
194
477
216
522
237
drawing for corner weights.
Fig. 5 - 48XP
Rigging
Weights
DUCTS
SEAL STRIP MUST BE IN
PLACE BEFORE PLACING
UNIT ON ROOF CURB
BASEPAN SLOT (BELOW
BEFORE RIGGING
HANDHOLDS)
C99015
U NIT 48XP
A
B
in.
22.0
22.0
22.0
20.0
21.5
23.5
024
030
036
042
048
060
in.
14.50
14.50
15.30
21.25
16.3
16.3
mm
558.5
558.5
558.5
508.0
546.1
596.9
Fig. 6 - Suggested
mm
368.3
368.3
388.6
539.8
414.0
414.3
Rigging
Step 5 -- Rig and Place Unit
Rigging
and handling
many reasons
due
structures, etc.).
Only
trained,
should
handle
When
working
of this equipment
to the
installation
can
be hazardous
location
(roofs,
for
elevated
PERSONAL
qualified
crane
operators
and ground
support
staff
this equipment,
observe
precautions
in the
literature, on tags, stickers, and labels attached to the equipment,
and any other safety precautions
that might apply.
Use spreader
bars or crate top when
rigging
the unit.
The
all rigging and moving
operations.
The unit must be level for
proper condensate
drainage;
therefore,
the ground-level
pad or
accessory
roof curb must be level before setting the unit in place.
a field-fabricated
support is used, be sure that the support is
and properly supports
the unit. Lifting point should be
directly
UNIT
over the center of gravity
FALLING
Failure to follow
iniury or death.
Never stand beneath
for the unit.
Failure to follow
iniury or death.
Never exceed
result
in personal
Step 6 -NOTE:
comply
Model
Connect
When
Condensate
installing
with local codes
48XP
disposes
condensate
drain connection
be sure to
and restrictions.
of condensate
fitting which exits through
and 3 for location).
Condensate
Drain
water through
the compressor
water can be drained
directly
a 3/4 in. NPT
access panel (See Fig. 2
onto the roof in rooftop
sure that the outlet of the trap is at least 1 in. (25 mm) lower than
the drain-pan
condensate
connection
to prevent the pan from
this warning
INJURY
could
Accessory lifting kit is only to be used with Small Packaged
units which have a composite unit base with molded rigging
holds.
could
result
in personal
units or lift over people.
overflowing
(See Fig. 7). Prime the trap with water. When
gravel apron, make sure it slopes away from the unit.
If the installation
requires draining
from the unit, install a 2-in. (51
connection
the outlet
condensate
PERSONAL
warning
installations
(where
permitted)
or onto
a gravel
apron
in
groundlevel
installations.
Install a field-supplied
condensate
trap
at end of condensate
connection
to ensure proper drainage. Make
HAZARD
rigged
HAZARD
this
units
must be rigged for lifting (See Fig. 6). Refer to Table 1 for
operating
weight. Use extreme caution to prevent damage when
moving the unit. Unit must remain in an upright position during
When
level
INJURY
to follow
iniury/death.
and install this equipment.
with
Failure
HAZARD
this warning
Prime
could
200 lb (91 kg) per bracket
result
in personal
lifting force.
using a
the condensate
water away
mm) trap at the condensate
to ensure proper drainage (See Fig. 7). Make sure that
of the trap is at least 1 in. lower than the drain-pan
connection.
This prevents the pan from overflowing.
the trap with water. Connect
a drain tube - using a minimum
of 3/4-in. PVC or 3/4-in. copper pipe (all field-supplied)
outlet end of the 2-in. (51 mm) trap. Do not undersize
Pitch the drain tube downward
at a slope of at least l-in.
- at the
the tube.
(25 mm)
for every 10 ft (3 m) of
tube for leaks.
the drain
horizontal
run. Be sure to check
1" (25 mm)
absence of local building
recommendations:
MIN.
._L
TRAP
OUTLET
Z
_..'__-j__
1. Avoid
2"(51
mm)M
IN.
heating
Trap
flue
hood
assembly
is shipped
in the return
indoor blower compartment
cover to locate the assembly.
(See Fig. 9). Remove
Dedicated
MUST
low NOx
models
Quality Management
Districts
be installed
section
of the
the return
duct
in California
Air
where a Low NOx rule exists. These
models meet the California maximum
oxides
emissions requirements
of 40 nanograms/joule
of nitrogen (NOx)
or less as shipped
from the factory.
NOTE:
Low
installations.
PERSONAL
NOx
requirements
INJURY
AND UNIT
apply
only
DAMAGE
to
natural
gas
HAZARD
Failure to follow this warning could result in personal
or death and unit component
damage.
injury
The venting system is designed to ensure proper venting. The
flue hood assembly
must be installed as indicated in this
section of the unit installation instructions.
Install the flue hood
1. This
as follows:
installation
must
conform
with
local
building
codes
and with the National
Fuel Gas Code (NFGC),
NFPA
54/ANSI
Z223.1
(in Canada,
CAN/CSA
B149.1,
and
B149.2)
latest revision.
Refer to Provincial
and local
plumbing
or wastewater
codes and other applicable
local
codes.
2. Remove flue hood from shipping location (inside the return
section of the blower compartment-See
Fig. 9). Place vent
cap assembly over flue panel. Orient screw holes in vent cap
with holes in the flue panel.
3. Secure flue hood to flue panel by inserting a single
the right side and the left side of the hood.
screw on
Step 8 -- Install Gas Piping
The gas supply pipe enters the unit through the access hole
provided.
The gas connection
to the unit is made to the l/2-in.
FPT gas inlet on the manual shutoff or gas valve.
Install a gas supply line that runs to the heating section. Refer to
Table 2 and the NFGC for gas pipe sizing. Do not use cast-iron
pipe. It is recommended
that a black iron pipe is used. Check the
local utility for recommendations
concerning
existing lines. Size
gas supply piping for 0.5 IN. W.C. maximum
pressure drop. Never
use pipe smaller than the l/2-in.
FPT gas inlet on the unit gas
valve.
For natural
gas applications,
the gas pressure
at unit gas connection
must not be less than 4.0 IN. W.C. or greater than 13 IN. W.C.
while the unit is operating.
For propane
applications,
the gas
pressure must not be less than 7.0 IN. W.C. or greater than 13 IN.
W.C. at the unit connection.
An
l/8-in.
NPT
connection,
must
supply connection
plugged
tapping,
accessible
be installed
immediately
to the gas valve.
2. Protect
thermal
Step 7 -- Install Flue Hood
The
for
upstream
test
of the
adhere
to the following
pertinent
low spots in long runs of pipe. Grade all pipe 1/4 in.
(6 mm)
in every 15 ft (5 m) to prevent traps. Grade
horizontal runs downward
to risers. Use risers to connect
A08001
Fig. 7 - Condensate
codes,
gage
gas
When installing the gas supply line, observe local codes pertaining
to gas pipe installations.
Refer to the NFPA 54/ANSI
Z223.1, in
Canada
CAN/CSA-BI49.1
and B149.2
latest editions.
In the
section
and to meter.
all segments
damage.
all
to
of piping
Support
system
all piping
against
physical
with appropriate
and
straps,
hangers, etc. Use a minimum of one hanger every 6 ft (2 m).
For pipe sizes larger than 1/2 in., follow recommendations
of national codes.
3. Apply joint compound
(pipe dope)
male threads of joint when making
sparingly
and only to
pipe connections.
Use
only pipe dope that is resistant
to action
of liquefied
petroleum gases as specified by local and/or national codes.
Never use Teflon tape.
Table
UNIT SIZE 48XP
NOMINAL CAPACITY (ton)
SHIPPING WEIGHT (Ib)
(kg)
COMPRESSORS
Quantity
REFRIGERANT (R-410A)
Quantity (Ib)
(kg)
REFRIGERANT METERING
DEVICE
CONDENSER COIL
Rows...Fins/in.
Face Area (sq ft)
CONDENSER FAN
Nominal Cfm
Diameter (in.)
(me)
Motor Hp (Rpm)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq ft)
EVAPORATOR BLOWER
Nominal Airflow (Cfm)
Size (in.)
(me)
Motor (hp)
FURNACE SECTION*
1 - Physical
024040
2
388
176
Data
024060
2
388
176
- Unit
030040
2-1/2
392
178
48XP
030080
2-1/2
392
178
036090
3
416
189
042060
3-1/2
464
210
042090
3-1/2
464
210
9.5
4.3
9.5
4.3
10.7
4.9.
10.7
4.9
036080
3
416
189
Scroll
1
7.3
3.3
7.3
3.3
8.0
3.6
8.0
3.6
TXV
2...21
11.95
2...21
11.95
2...21
11.95
2...21
11.95
2...21
13.7
2...21
13.7
2...21
15.4
2...21
15.4
2350
22
559
2350
22
559
2350
22
559
2350
22
559
2800
22
559
2800
22
559
2800
22
559
2800
22
559
1/8 (825)
1/8 (825)
1/8 (825)
1/8 (825)
1/8 (825)
1/8 (825)
1/8 (825)
1/8 (825)
3...15
3.7
3...15
3.7
3...15
3.7
3...15
3.7
4...15
3.7
4...15
3.7
3...15
3.7
3...15
3.7
770
10x10
254x254
1/2
770
10x10
254x254
1/2
960
10x10
254x254
1/2
960
10x10
254x254
1/2
1150
1 lx10
279x254
3/4
1150
1 lx10
279x254
3/4
1400
1 lx10
279x254
3/4
1400
1 lx10
279x254
3/4
2...44
2...38
2...44
2...38
2...38
3...38
2...38
2...38
Burner Orifice No. (Qty._Drill Size) Natural Gas
2...50
2...46
2...50
2...46
2...46
3...46
2...46
2...46
Burner Orifice No. (Qty._Drill Size) Propane Gas
HIGH-PRESSURE
SWITCH (psig)
650 +/-15
420 +/-25
Cut-out Reset (Auto)
LOSS-OF-CHARGE
/ LOW-PRESSURE
SWITCH
20 +/-5
(Liquid Line) (psig) Cut-out
45 +/-10
Reset (auto)
RETURN-AIR
FILTERS Throwawayt
20x24x1
24x30x1
(in.)
508x610x25
610x762x25
(mm)
*Based on altitude of 0 to 2000 ft (0-610 m).
1-Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of
300 ft/minute for high-capacity
type. Air filter pressure drop for non-standard
filters must not exceed 0.08 IN. W.C..
Table
1 - Physical
Data - Unit 48XP
(Continued)
UNIT SIZE 48XP
048090
048115
048130
060090
NOMINAL CAPACITY (ton)
4
4
4
5
SHIPPING WEIGHT (Ib)
512
512
512
559
(kg)
232
232
232
254
COMPRESSORS
Scroll
Quantity
1
REFRIGERANT (R-410A)
Quantity (Ib)
11.25
11.25
11.25
13.2
(kg)
5.1
5.1
5.1
6.0
REFRIGERANT METERING DEVICE
T; IV
CONDENSER COIL Rows...Fins/in.
2...21
2...21
2...21
2...21
Face Area (sq ft)
17.4
17.4
17.4
19.3
CONDENSER FAN
Nominal Cfm
3300
3300
3300
3300
Diameter (in.)
22
22
22
22
(mm)
559
559
559
559
Motor Hp (Rpm)
1/4 (1100)
1/4 (1100)
1/4 (1100)
1/4 (1100)
EVAPORATOR COIL
Rows...Fins/in.
4...15
4...15
4...15
4...17
Face Area (sq ft)
4.7
4.7
4.7
5.7
EVAPORATOR BLOWER
Nominal Airflow (Cfm)
1400
1400
1400
1710
Size (in.)
1lx10
1lx10
1 lx10
1 lx10
(mm)
279x254
279x254
279x254
279x254
Motor (hp)
3/4 (1075)
3/4 (1075)
3/4 (1075)
1.0 (1040)
FURNACE SECTION*
Burner Orifice No. (Qty...Drill Size) Natural Gas
3...38
3...33
3...31
3...38
Burner Orifice No. (Qty._Drill Size) Propane Gas
3...46
3...42
3...41
3...46
HIGH-PRESSURE
SWITCH (psig)
Cut-out
650 +/-15
Reset (Auto)
420 +/-25
LOSS-OF-CHARGE
/ LOW-PRESSURE
SWITCH (Liquid
Line) (psig)
20 +/-5
Cut-out
Reset (auto)
45 +/-10
RETURN-AIR
FILTERS Throwaway'[" (in.)
24x30x1
(mm)
610x762x25
*Based on altitude of 0 to 2000 ft (0-610 m).
1-Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the
300 if/minute for high-capacity
type. Air filter pressure drop for non-standard
filters must not exceed 0.08 IN. W.C..
060115
5
559
254
060130
5
559
254
13.2
6.0
13.2
6.0
2...21
19.3
2...21
19.3
3300
22
559
1/4 (1100)
3300
22
559
1/4 (1100)
4...17
5.7
4...17
5.7
1710
1 lx10
279x254
1.0 (1040)
1710
1 lx10
279x254
1.0 (1040)
3...33
3...42
3...31
3...41
heating airflow velocity of
Table
2- Maximum
Gas
NOMINAL
IRON PIPE,
SIZE (IN,)
1/2
3/4
1
11/4
11/2
INTERNAL
DIAMETER
(IN,)
.822
.824
1.049
1.380
1.810
Flow
Capacity*
LENGTH
10
(3)
175
380
880
1400
2100
20
(8)
120
250
485
950
1480
30
(9)
97
200
375
770
1180
40
(12)
82
170
320
800
990
50
(15)
73
151
285
580
900
OF PIPE,
80
(18)
88
138
280
530
810
70
(21)
81
125
240
490
750
FT (m)t
80
(24)
57
118
220
480
890
90
(27)
53
110
205
430
850
100
(30)
50
103
195
400
820
125
(38)
44
93
175
380
550
150
(48)
40
84
180
325
500
175
(53)
-77
145
300
480
200
(81)
-72
135
280
430
* Capacity of pipe in cuft of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 0.5-IN. W.C. (based on a 0.60 specific gravity gas). Refer to Table 2
and the NFGC NFPA 54/ANSI Z223.1.
1-This length includes an ordinary
number of fittings.
4. Install sediment trap in riser leading to heating section (See
Fig. 8). This drip leg functions as a trap for dirt and
condensate.
FIRE
IN
OR EXPLOSION
HAZARD
Failure to follow this warning could result in personal iniury,
death and/or property damage.
-Connect gas pipe to unit using a backup wrench to avoid
damaging gas controls.
-Never purge a gas line into a combustion chamber. Never test
for gas leaks with an open flame. Use a commercially available
soap solution made specifically for the detection of leaks to
check all connections.
TEE
-Use proper length of pipe to avoid stress on gas control
manifold.
NIPPLE
-If a flexible connector is required or allowed by authority
having jurisdiction, black iron pipe shall be installed at furnace
gas valve and extend a nfininmm of 2 in. (51 ram) outside
furnace casing.
CAP
C99020
Fig. 8 - Sediment Trap
5. Install an accessible, external, manual main shutoff valve in
gas supply pipe within 6 ft (2 m) of heating section.
6. Install ground-joint union close to heating section between
unit manual shutoff and external manual main shut-off
valve.
7. Pressure-test all gas piping in accordance with local and
national plumbing and gas codes before connecting piping
to unit.
NOTE: Pressure test the gas supply system after the gas supply
piping is connected to the gas valve. The supply piping must be
disconnected from the gas valve during the testing of the piping
systems when test pressure is in excess of 0.5 psig. Pressure test the
gas supply piping system at pressures equal to or less than 0.5 psig.
The unit heating section must be isolated from the gas piping
system by closing the external main manual shutoff valve and
slightly opening the ground-joint union.
-If codes allow a flexible connector, always use a new
connector, do not use a connector which has previously
serviced another gas appliance.
8. Check
for gas leaks at the
field-installed
and
factoryinstalled gas lines after all piping connections have
been completed. Use soap-and-water solution (or method
specified by local codes and/or regulations).
Step 9 --
Install Duct Connections
The unit has duct flanges on the supply- and return-air openings
on the side and bottom of the unit. For downshot applications, the
ductwork connects to the roof curb (See Fig. 2 and 3 for
connection sizes and locations).
CONFIGURING
UNITS FOR DOWNFLOW
_VERTICAL)
DISCHARGE
ELECTRICALSHOCK
HAZARD
Failure to follow this warning could result in personal iniury
or death.
Before installing or servicing system, always turn off and tag
lockout main power to system, There may be more than one
disconnect switch,
1.Open
allelectrical
disconnects
before
starting
anyservice
work.
2.Remove
horizontal
(metal)
ductcovers
toaccess
vertical
(downflow)
discharge
ductknockouts
inunitbase.
3.Useascrewdriver
andhammer
toremove
thepanels
inthe
bottom
oftheunitbase
(See
Fig.9& 10).
PROPERTY
Failure
DAMAGE
HAZARD
to follow this caution
may result in property
Collect ALL screws that were removed.
on rooftop
as permanent
damage
5. It is recommended
perimeter
that
of the vertical
to the roof may occur.
the
base
insulation
return-air
opening
the base with aluminum
tape. Applicable
require aluminum
tape to prevent exposed
6.
damage.
Do not leave screws
around
the
be secured
local codes
fiberglass.
to
may
Cover both horizontal
duct openings
with the provided
duct covers. Ensure opening is air- and watertight.
7. After completing
unit conversion,
and power up unit.
perform
all safety
checks
NOTE:
The design and installation of the duct system nmst be in
accordance
with the standards
of the NFPA for installation
of
nonresidence-type
90A or
ordinances.
I
I
Adhere
to the following
installing the duct system:
i'
RETURN
DUCT
OPENING
SUPPLY
DUCT
OPENING
1. Units
C99011
Fig. 9 - Supply
and Return
air conditioning
residence-type,
are
removing
Duct Opening
shipped
and ventilating
NFPA
90B;
criteria
when
for
and/or
horizontal
systems,
local
selecting,
duct
NFPA
codes
sizing,
and
and
installation
(by
duct covers).
2. Select
and
size
ductwork,
supply-air
registers,
and
return-air
grilles according to American Society of Heating,
Refrigeration
and Air Conditioning
recommendations.
Engineers
(ASHRAE)
3. Use flexible transition between
rigid ductwork
and unit to
prevent transmission
of vibration.
The transition
may be
screwed or bolted to duct flanges. Use suitable
ensure weather tight and airtight seal.
gaskets
4. All units must have field-supplied
filters or accessory
rack
installed
in the
return-air
side
of the
Recommended
sizes for filters are shown in Table 1.
to
filter
unit.
5. Size all ductwork
for maximum
required
airflow (either
heating or cooling)
for unit being installed.
Avoid abrupt
duct size increases or decreases
or performance
may be
affected.
6. Adequately
insulate
and weatherproof
all ductwork
located
outdoors.
Insulate
ducts passing
through
unconditioned
space, and use vapor barrier in accordance
with latest issue
of Sheet
Metal and Air Conditioning
Contractors
National
Association
(SMACNA)
and Air Conditioning
Contractors
of America
(ACCA)
n_ininmm
installation
standards
for
heating and air conditioning
systems. Secure all ducts to
VERTICAL DUCT COVERS
building
7. Flash,
C99012
Fig. 10 - Vertical
4. If unit ductwork
Duct Cover
is to be attached
on the unit base (jackstand
time.
to vertical
applications
building
building
Removed
opening
only),
flanges
do so at this
10
structure.
weatherproof,
structure
practices.
and vibration-isolate
in accordance
all openings
with local codes
in
and good
Step 10 -- Install Electrical
Connections
HIGH VOLTAGE
POWER LEADS
(SEE UNIT WIRING
r
I¢_
LABEL)
ELECTRICALSHOCK
" " "
Lc_
HAZARD
Failure to follow this warning
or death.
could result in personal
injury
mmm
FIELD-SUPPLIED
FUSED DISCONNECT
GND
The unit cabinet must have an uninterrupted,
unbroken
electrical ground. This ground may consist of an electrical
wire connected
to the unit ground screw in the control
compartment,
or conduit approved for electrical ground when
installed in accordance
with NEC, NFPA 70 National Fire
Protection Association
(latest edition) (in Canada, Canadian
Electrical Code CSA C22.1) and local electrical codes.
CONTROL
BOX
OO-
YZL£Y)--D.i Z-,,'_
,THERMOSTAT
(TYPICAL)
GR._(e_)
_. i-¢n_
LOW-VO LTAG E
POWER LEADS(SEE UNIT
WIRING LABEL)
_J
O_
RE DZR2,
1>.i-f_
O-
BREC_)
_ i"(-€3
O=
SPLICE
UNIT
COMPONENT
DAMAGE
LEGEND
HAZARD
Failure to follow this caution could result in damage
being installed.
1. Make
all electrical
NFPA
70
governing
connections
C22.1
connections
in accordance
2. Use
Canadian
only
Field Control-Voltage Wiring
Field High-Voltage Wiring
.......
to the unit
A08476
Fig. ll
with NEC
Three-phase
(latest edition)
and local electrical
codes
such
wiring.
In Canada,
all electrical
must be in accordance
with CSA standard
Electrical
Code
local codes. Refer to unit wiring
copper
conductor
field-supplied
electrical
NOT USE ALUMINUM
1.
Part 1 and applicable
for connections
switch
- High and Control-Voltage
Run the high-voltage
the control box.
ground
and unit. DO
4. Connect
field
compressor
3. Be sure
operating
3-phase
that high-voltage
power
to unit is within
voltage range indicated on unit rating plate. On
units, ensure
phases are balanced
within
2
percent. Consult local power company for correction
improper voltage and/or phase imbalance.
as high-voltage
5. Do not damage
internal
through any panel to mount
etc.
HIGH-VOLTAGE
6. Connect
of
SPECIAL
components
when
electrical hardware,
on connection
to the lines
11 of the
wire on connection
13 of
field wire L3 to Blue wire from compressor.
PROCEDURES FOR 208-V OPERATION
Failure to follow
or death.
separate
electrical
disconnect
switch
service
mounted
with
at,
a
or
HAZARD
this warning
could result in personal
injury
Make sure the power supply to the unit is switched OFF before
making any wiring changes. With disconnect
switch open,
move yellow wire from transformer
(3/16 in.) terminal
marked 230 to terminal marked 208. This retaps transformer
to primary voltage of 208 vac.
to the unit rating plate for
and minimum
circuit amps
for wire sizing.
entry points
wire
connected
drilling
conduit,
The field-supplied
disconnect
switch box may be mounted
on the
unit over the high-voltage
inlet hole when the standard power and
low-voltage
to black
wires
connection.
contactor.
ELECTRICALSHOCK
within sight from, the unit. Refer
maximum
fuse/circuit
breaker
size
(ampacity)
LI
ground
leads into
wires.
CONNECTIONS
The unit
must
have
a
field-supplied,
waterproof,
lead to chassis
5. Connect field wire L2 to yellow
the compressor
contactor.
4. Insulate low-voltage
wires for highest voltage contained
within conduit when low-voltage
control wires are in
same conduit
(L1, L2, L3) and ground
3. Locate the black and yellow
side of the contactor.
between
Connections
units:
2. Connect
diagram.
disconnect
WIRE.
BOX
are used (See Fig. 2 and 3 for acceptable
location).
See unit wiring label and Fig. 11 for reference when making high
voltage connections.
Proceed as follows
to complete
the high
voltage
Single
connections
phase
ELECTRICAL
to the unit.
2. Connect
ground
(L1,
L2) and ground
lead to chassis
3. Connect L1 to pressure
contactor.
ground
lug connection
4. Connect
L2 to pressure
compressor
contactor.
leads into the
HAZARD
iniury
Before making any wiring changes, make sure the gas supply
is switched off first. Then switch off the power supply to the
unit and install lockout tag.
connection.
11 of the compressor
CONTROL
lug
FIRE/EXPLOSION
Failure to follow this warning could result in personal
or death and property damage.
units:
1. Run the high-voltage
control box.
SHOCK
connection
23
of
VOLTAGE
CONNECTIONS
the
Do not use any type of power-stealing
problems may result.
11
thermostat.
Unit
control
Useno.18American
WireGage
(AWG)
color-coded,
insulated
(35Cminimum)
wirestomake
thecontrol
voltage
connections
between
thethermostat
andtheunit.If thethermostat
is located
morethan100ft (30m)fromtheunit(asmeasured
along
the
control
voltage
wires),
useno.16AWGcolor-coded,
insulated
(35
Cminimum)
wires.
Locate
thesixlowvoltage
thermostat
leads
in24voltsplice
box.
SeeFig.11forconnection
diagram.
Runthelow-voltage
leads
fromthethermostat,
through
thecontrol
wiringinletholegrommet
(Fig.2 and3),andintothelow-voltage
splice
box.Provide
adrip
loopbefore
running
wiresthrough
panel.
Secure
andstain
reliefall
wires
sothattheydonotinterfere
withoperation
ofunit.
Easy Select
EASY
TM
SELECT
-
9 PIN CONNECTOR
ICM PRINTED CIRCUIT BOARD '_--_
r"m
SEC1
48XP
CONFIGURATION
TM
TAPS FOR 48XP
Easy Select taps are used by the installer
to configure
ECM motor uses the selected taps to modify
pre-programmed
table of airflows.
a system. The
its operation
to a
The unit must be configured
to operate properly
with system
components
with which it is installed. To successfully
configure
a
basic system
(see information
next to select pins),
match the components
printed
on circuit board
move the 6 select wires
used (See Fig. 12).
a. GAS HEAT/CFM-SELECT
Factory
label.
b. AC/HP
Factory
selected
SIZE-
to capacity
conditioner
to the pins
SYSTEM
air conditioner
correspond
SYSTEM
12 PIN CONNECTOR
C01039
Fig. 12 - Detail
(4.) ENH-
SPEED WHEN
CONTINUOUS
The AC/HP CFM Adjust select is factory set to the
NOM tap. The CFM Adjust selections NOM/LO will
Four motor
customize
operation
and enhance
as indicated).
Selection options
delay profiles
system
are provided
operation
for
circuit
5-amp automotive
transformer
SEC2
to
50 percent
FAN
cooling
to MED, 65 percent
FUSING
AND
is fused by a board-mounted
fuse placed in series with the
and the R circuit. The C circuit
of the
transformer
is referenced to chassis ground through a
printed circuit run at SEC1 connected
to metal standoff
(See Fig. 12, E
marked
h. BASIC
with ground
UNIT
symbol.
CONFIGURATION
The following basic configuration
of the indoor motor
will provide ARI rated performance
of the 48XP. This
BASIC CONFIGURATION
should be used when the
and 45 sec off delay.
rated ARI performance
(2.) A 30 sec cooling delay with no airflow/90
sec off
delay at 100 percent airflow profile is used when it
is desirable to allow system coils time to
with the airflow
setting,
CIRCUIT
The low-voltage
DELAY
are:
cool-down
in conjunction
heating mode.
IS SET ON
g. LOW-VOLTAGE
REFERENCE
(1.) The standard 90 sec off delay (Factory Setting) at
100 percent airflow in cooling mode. In heating
mode, IGC will control 45 sec on delay with no
airflow
DESIRED
THERMOSTAT
FAN
(3.) HI speed-Move
connector to HI, 100 percent
cooling mode airflow (See Fig. 12, F as indicated).
(See Fig. 12, D as indicated).
DESIREDTIME
for 48XP
(2.) MED speed-Move
connector
cooling mode airflow.
10 percent airflow below nominal unit size
Adjust selection options are provided to adjust
SELECT
Board
FAN--SELECT
(1.) LO speed-Factory
mode airflow.
regulate airflow supplied for all operational
modes,
except non-heat
pump heating modes. HI provides 15
percent airflow over nominal unit size selected and LO
e. ON/OFF DELAYPROFILE
Not recommended
f. CONTINUOUS
LOW,
airflow supplied to meet individual
installation needs
such things as noise, comfort, and humidity removal
Printed-Circuit
in cooling mode. In heating mode IGC will control
45 sec on delay with no airflow and 45 sec off
delay.
TYPE
NOMINAL,
of SPP
(3.) A no delay option used for servicing unit or when
a thermostat is utilized to perform delay functions
This
Factory selected on 48XP for AC-Air conditioner.
For Gas Heat/Electric
Cool Unit-AC
must be selected.
provides
selected.
GRY ==_
correspond
INSTALLED
d. AC/HP CFM ADJUST-SELECT
OR HIGH AIRFLOW
HUM2
HEATER/MOTOR
of unit installed. Installer should verify air
size to ensure that airflow delivered falls
TYPE--SELECT
AUX2
SIZE
to unit
SIZE INSTALLED
size should
within proper range for the size unit installed.
applies to all operational
modes.
c. SYSTEM
which
GAS HEAT INPUT
SELECT
HUM1
24VAC
gas heat size should
selected
AUX1
label located
enhancements
is required,
(1.) HEAT-Factory
selected
(2.) AC/HP Size-Factory
please verify.
in
(3.)
SYSTEM
AC-AIR
(4.) AC/HP
(5.)
ON/OFF
are not needed.
to match heat input size.
selected
TYPE-Factory
CONDITIONER.
DELAY-Factory
to match system
selected
CFM ADJUST-Select
(Do Not Use ENH profile
12
or if system
such as super dehumidify
on 48XP
size,
system
NOM.
selected
0/90 profile.
for Gas Packaged
Units)
c. HUMIDIFIER/HUMIDISTAT
(6.) CONTINUOUS FAN-Select desired fan speed
when thermostat is set to continuous fan.
i. COMFORT OPTIONS--SUPER
DEHUMIDIFY (See
Quick Reference Guide)
The Super Dehumidify option is possible when this unit
is installed with a field supplied Thermidistat _ control
(SuperDehumidify does not require an outdoor
temperature sensor). The following configuration is
recommended for n_axinmm cooling/dehumidifying
comfort. This configuration will improve the comfort
provided by the air conditioning system if more
humidity removal is desired. While providing this
improved comfort, the system will operate efficiently,
but not at the published ARI SEER efficiency. During
cool-to-dehumidify
call, it provides maximum
dehumidification by reducing airflow to a n_ininmm.
The actual super dehumidify command from
Thermidistat control to the indoor unit is a :'Y" signal
without a :'G" signal in addition to dehumidify signal.
The indoor unit responds to this combination by
reducing the airflow to a n_ininmm. All other
characteristics of cool to dehumidify are the same. The
following system configuration is recommended for
n_axinmm cooling/dehumidifying comfort (See Fig. 12).
(1.) HEAT-Factory selected to match gas heat size of
unit installed.
(2.) AC/HP Size-Factory
please verify.
humidifier through a standard
These terminals are energized
Zone II, the 24-v.
the Thermidistat
d. DEHUMIDIFY
HUMIDISTAT
signal
using a
Plus or Comfort
may be sourced
directly
from
HUM terminal (See Fig. 12, 13 & 14).
CAPABILITY
WITH STANDARD
CONNECTION
requirement,
the ECM board provides connection
terminals for use of a standard humidistat.
The unit will
detect
the humidistat
contacts
opening
on increasing
humidity
and reduce its airflow to approximately
80
percent of nominal cooling mode airflow. This reduction
will increase the system latent capacity until the
humidity falls to a level which causes the humidistat to
close its contacts. When the contacts close, the airflow
will return to 100 percent
activate
this mode,
remove
of selected
jumper
cooling
airflow.
To
J1 and wire in a
standard humidistat (See Fig. 14).
e. DEHUMIDIFY
AND SUPER DEHUMIDIFY
CAPABILITIES
This model unit is capable
of responding
to a signal
from indoor system control (Thermidistat
or capable
zoning control) to operate in comfort control modes
such as Super Dehumidify
Mode. Consult literature
provided with indoor system control to determine if
these operating modes are available, and to see control
set up instructions.
No special setup or wiring of unit is
(6.) CONTINUOUS FAN-Select desired fan speed
when thermostat is set to continuous fan.
required.
J1 jumper to
HUMIDISTAT
NOTE: J1 jumper should only be removed when a Thermidistat,
humidistat or capable zoning control is installed.
HUM 1FI
(c)
(8.) LOW VOLTAGE CONNECTIONS-Make
connections as shown in ELECTRICAL
CONNECTIONS section.
24-VAC
TERMINALS
_
J
HUM 2[7
(G)
(9.) CONFIGURE THERMIDISTAT-Follow
Thermidistat (or capable zoning system)
installation instructions for Super Dehumidify
operation.
ACCESSORY
INSTALLATION
AUXILIARY
(See Fig. 12).
when G
Latent capacities for this unit are better than average
systems. If increased latent capacity is an application
(4.) AC/HP CFM ADJUST-Select NOM.
(5.) ON/OFF DELAY-Select :'0/0" profile.
a.
humidistat
with 24-v.
and C on the 9 pin connector. When
Thermidistat
Control, Zone Comfort
selected to match system size,
MODE-Remove
Easy
thermostat signal is present (See Fig. 13 & 14).
Alternately,
the 24-v. signal may be sourced from the W
(3.) SYSTEM TYPE-Factory selected on 48XP system
AC-AIR CONDITIONER.
(7.) DEHUMIDIFY
activate.
CONNECTIONS
Select Board terminals HUM1 and HUM2 are provided
for direct connection to the low-voltage
control of a
HUMIDIFIER
TO HUMIDIFIER
WIRING
A95317
Fig. 13 - Humidifier
Wiring
- 48XP
EASY SELECTIq
BOARD TERMINALF]
BLOCK
The AUX and HUM
terminals on the Easy Select Board are tied directly to
the G terminal, and provide a 24-v. signal whenever the
G terminal
dehumidify
is energized (See Fig. 12). During
mode, the G signal is not present
Super
and the
auxiliary terminals are not energized. If the installation
includes the use of this operating mode, do not use these
terminals to control accessories.
See Electronic Air
Cleaner and Humidifier
sections for further information.
b. ELECTRONIC
AIR CLEANER
using an electronic
I
REMovEJ
I
HUMIDISTAT
l
JUMPER
CONNECTIONS
The AUXI and AUX2 terminals are not always
energized during blower operations,
as described
When
1
J1
A95316
Fig. 14 - Humidistat
above.
Wiring
for De-Humidify
Mode
- 48XP
air cleaner with the unit, use
Airflow Sensor (See Air Cleaner Price Pages for Part
Number). The airflow sensor turns on electronic air
cleaner when the blower is operating.
TRANSFORMER
PROTECTION
The transformer is of the energy-limiting
a 30-sec. overload or shorted secondary
13
type. It is set to withstand
condition.
PRE-START-UP
a. Make
sure gas line is free of air. Before lighting
for the first time, perform the following
valve in the "OFF" position:
the unit
with the gas
If the gas supply pipe was not purged before connecting
the unit, it will be full of air. It is recommended
that the
FIRE, EXPLOSION,
ELECTRICAL
SHOCK HAZARD
ground joint union be loosened, and the supply line be
allowed to purge until the odor of gas is detected. Never
Failure to follow this warning could result in personal injury,
death or property damage.
purge gas lines into a combustion
chamber. Immediately
upon detection of gas odor, retighten the union. Allow 5
1. Follow recognized safety practices and wear protective
goggles when checking or servicing refrigerant system.
minutes
b. Make
2. Do not operate compressor or provide any electric power
to unit unless compressor terminal cover is in place and
secured.
positioned
d. Make
on all WARNING,
labels attached to, or
a. Inspect for shipping and handling damages such as
broken lines, loose parts, disconnected wires, etc.
b. Inspect for oil at all refrigerant tubing connections and
on unit base. Detecting oil generally indicates a
refrigerant leak.
1/8" (3 mm)
MOTORAND
e. Inspect coil fins. If damaged during shipping and
handling, carefully straighten fins with a fin comb.
maximum
from motor
is in place.
drain trap is filled with water
MAX BETWEEN
FAN HUB
MOTOR
loose parts
SHAFT
A08474
Fig. 15 - Fan
Blade
Clearance
START-UP
Step 1 -- Check for Refrigerant Leaks
Proceed as follows
charge the unit:
to locate
and repair
a refrigerant
leak
and to
1. Locate leak and make sure that refrigerant system pressure
has been relieved
and reclaimed
from both highand
low-pressure
ports.
2. Repair
NOTE:
leak following
Refrigerant
Install a filter drier whenever
Service
procedures.
the system has been opened
for repair.
3. Add a small charge
and leak-test unit.
c. Leak test all refrigerant tubing connections using
electronic leak detector, halide torch, or liquid-soap
solution. If a refrigerant leak is detected, see the Check
for Refrigerant Leaks section.
d. Inspect all field- and factory-wiring connections. Be
sure that connections are completed and tight.
sure that air filter(s)
from fan
f. Make sure that all tools and miscellaneous
have been removed.
6. Do not use torch to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective goggles and
proceed as follows:
a. Shut off electrical power to unit and install lockout
tag.
b. Relieve and reclaim all refrigerant from system
using both high- and low-pressure ports.
c. Cut component connecting tubing with tubing
cutter and remove component from unit.
d. Carefully unsweat remaining tubing stubs when
necessary. Oil can ignite when exposed to torch
flame.
2. Read and follow
instructions
CAUTION, and INFORMATION
shipped with, unit.
3. Make the following inspections:
edge of condenser-fan
be 1/2 in. (13 mm) maximum
e. Make sure that condensate
to ensure proper drainage.
while
Proceed as follows to inspect and prepare the unit for initial startu _:
1. Remove access panel.
blade is correctly
c. Ensure fan hub is 1/8 in. (3 mm)
housing (See Fig. 15).
4. Relieve and recover all refrigerant from system before
touching or disturbing anything inside terminal box if
refrigerant
leak is suspected
around compressor
terminals.
connection
then light unit.
in fan orifice. Leading
blade should
orifice.
3. Do not remove compressor terminal cover until all
electrical sources are disconnected and tagged.
5. Never attempt to repair soldered
refrigerant system is under pressure.
to elapse,
sure that condenser-fan
of R-410A
4. Evacuate and recover refrigerant
additional leaks are not found.
5. Charge
unit with R-410A
refrigerant
from refrigerant
refrigerant,
charging cylinder or accurate
for required charge.
vapor
using
to system
system
a volume
tric-
scale. Refer to unit rating plate
Step 2 -- Unit Sequence of Operation
48XP Sequence of Operation
a. CONTINUOUS
FAN
4. Verify the following conditions:
(1.) Thermostat
closes circuit R to G-The
at continuous
fan airfow.
b. COOLING
FIRE, EXPLOSION
Blower
runs
MODE
(1.) If indoor temperature
is above temperature
set
point and humidity is below humidity set point,
thermostat closes circuits R to G, R to Y/Y2 and R
HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
to O-The
airflow.
Do not purge gas supply into the combustion chamber. Never
test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection of
leaks to check all connections.
c. COOLING
unit delivers
single speed
cooling
MODE-DEHUMIDIFICATION
(1.) If indoor temperature
is above temperature
set
point and humidity is above humidity set point,
14
if
thermostat or Thermidistat
closes circuits R to G, R
this sequence
to Y/Y2, R to O and humidistat or Thermidistat
opens R to DH-The
unit delivers airflow which is
approximately
80 percent of the nominal cooling
airflow to increase the latent capacity of the system.
d. COOLING
MODE-SUPER
OPERATION
NOTE:
The indoor
capable
of
(SEE
control
providing
Dehumidify
control
must
be configured
instructions.
Consult
indoor
control
is capable
configuration
REFERENCE
GUIDE)
used, such as a Thermidistat,
Super
operation
mode
Super
Dehumidify
inputs
and
Check
GAS
•
pressure
is required
after
proceed
unit
start-up
(See
as follows:
The rated gas inputs shown in Table 3 are for altitudes
specific
(1.) If the indoor temperature
is below the temperature
set point and the humidity is above the humidity
gas with a heating
gravity,
or propane
Btu/ft 3 at 1.5 specific
•
from sea
value of 1050 Btu/ft 3 at 0.65
gas with a heating
value of 2500
gravity.
In the U.S.A. for elevations
above 2000 ft (610 mm), reduce
input 4% for each 1000 ft (305 m) above sea level. In Canada
for elevations
will deliver airflow at the full
plus dehumidify
mode
from 2001 ft (610 m) to 4500
sea leval reduce
requested value. If circuit R to G is open (0-v.) for
Super Dehumidify
mode, the motor delivers
reduced airflow to maximize the humidity removal
of the system while minimizing
over cooling.
e. GAS HEATING
and manifold
level to 2000 ft (610 m) above sea level. These inputs are based
and for
set point, the Thermidistat
closes circuit R to O,
opens circuits R to DH and R to G, and closes
circuit R to Y/Y2. If circuit R to G is closed
has
INPUT
gas input
on natural
the motor
or cooling
do not light within
fan will turn on 45 sec. after the flame
Table 3). If adjustment
instruction.
(24-v.),
cooling
If the burners
been established.
The evaporator
fan will turn off 45 sec.
after the thermostat has been satisfied.
CHECK
must be
as outlined
in its installation
control
literature
to determine
if
of providing
5. The evaporator
DEHUMIDIFY
QUICK
is repeated.
15 minutes from the initial call for heat, there is a lockout.
To reset the control, break the 24-v power to W.
•
When the gas supply
specific
gravity,
distributor
ft (1372 m) above
input 10%.
being
used has a different
refer to national
to determine
heating
value or
and local codes, or contact your
the required
orifice size.
MODE
(1.) Thermostat closes circuit R to W/WI-The
unit
delivers the selected gas heat airflow. The IGC will
control a 45 sec. blower
"Off"' delay.
Step 3 -- Start-Up
ments
UNIT
Heating
UNIT
"On" delay and a 45 sec.
COMPONENT
and Make Adjust-
DAMAGE
ADJUST
HAZARD
may result in damage
that
burner
operation may occur
misaligned.
Follow
the lighting
label (located inside
heating section.
NOTE:
Make
orifices
when the burner
instructions
CHECK
HEATING
Unstable
in the manifold
are
section
operation
door)
to start the
access
propane
gas units.
Measure
Gas Flow (Natural
has been purged,
the unit
and that all
for leaks.
thermostat
SYSTEM
and the fan switch
2. Set the heating
room temperature.
3. The induced-draft
temperature
motor
4. After a call for heating,
cooling
instructions
control
located
operation
inside
switch
in
is placed in AUTO
control
burner
the
All
other
turned off when
follows:
as
or
appliances
gas flow
3. Record number
one revolution.
HEAT
that
use the same
is measured
meter
at the meter.
must
be
Proceed
as
to unit.
of seconds
4. Divide number of seconds
seconds in one hr).
above
for gas meter
test dial to make
in Step 3 into 3600
(number
of
5. Multiply result of Step 4 by the number of cuft shown for
one revolution of test dial to obtain ft 3 of gas flow per hr.
will start.
the main burner
can be made by changing the
pressure
must be maintained
2. Remove pipe plug on manifold
(See Fig. 16) and connect
manometer.
Turn on gas supply to unit.
position.
of the thermostat
the gas flow
between 3.4 and 3.6 IN. W.C.. If larger adjustments
are required,
change main burner orifices following
the recommendations
of
national and local codes.
1. Turn off gas supply
for proper
by measuring
Gas Units)
Minor adjustment
to the gas flow
manifold
pressure.
The manifold
CONTROL
follows (see furnace lighting
blower access panel):
position
or blower
sure that gas supply
room
orifices
INPUT
at the meter or by measuring
the manifold pressure. Measuring the
gas flow at the meter is recommended
for natural gas units. The
manifold
pressure
must be measured
to determine
the input of
NOTE:
has been checked
Start and check
aligned.
on the heating
the burner
gas piping
1. Place
are properly
GAS
The gas input to the unit is determined
to the unit
Complete the required procedures given in the Pre-Start-Up
section before starting the unit. Do not jumper any safety
devices when operating the unit.
sure
HAZARD
Do Not redrill an orifice. Improper drilling (burrs,
out-of-round holes, etc.) can cause excessive burner noise
and misdirection of burner flame. Replace with correct sized
orifices.
Failure to follow this caution
being installed.
Make
DAMAGE
Failure to follow this caution may result in reduced unit and/or
component life.
should
6. Multiply
light within
obtain
5 sec. If the burners do not light, there is a 22-sec. delay
before another 5-sec. try. If the burners still do not light,
result
total
of Step 5 by Btu heating
measured
input
in Btuh.
value
Compare
of gas to
this value
with heating input shown in Table 3 (Consult the local gas
supplier if the heating value of gas is not known).
15
4. Remove cover screw over regulator adjustment screw on
gas valve.
5. Adjust regulator adjustment screw to the correct manifold
pressure, as specified in Table 3. Turn adjusting screw
clockwise to increase manifold pressure, or turn adjusting
screw counterclockwise to decrease manifold pressure.
6. Replace cover screw.
7. Turn off gas to unit. Remove manometer from pressure tap.
Replace pipe plug on gas valve, then turn on gas to unit.
Check for leaks.
CHECK BURNER FLAME
With burner access panel removed, observe the unit heating
operation. Watch the burner flames to see if they are light blue and
soft in appearance, and that the flames are approximately the same
for each burner. Propane will have blue flame with yellow tips (See
Fig. 17). Refer to the Maintenance section for information on
burner removal.
BURNER FLAME
MANIFOLD
PIPE
PLUG
C99019
BURNER
Fig. 16 - Burner Assembly
EXAMPLE: Assume that the size of test dial is 1 ft3, one
revolution takes 32 sec., and the heating value of the gas is 1050
Btu/ft3. Proceed as follows:
1. 1.32 sec. to complete one revolution.
2. 3600 + 32 = 112.5.
MAN IFOLD
3. 112.5 x 1 =112.5 ft3 of gas flow/hr.
4. 112.5 x 1050 = 118,125 Btuh input.
If the desired gas input is 115,000 Btuh, only a minor change in the
manifold pressure is required.
Observe manifold pressure and proceed as follows to adjust gas
input:
1. Remove cover screw over regulator adjustment screw on
gas valve.
2. Turn regulator adjustment screw clockwise to increase gas
input, or turn regulator adjustment screw counterclockwise
to decrease input. Manifold pressure nmst be between 3.4
and 3.6 IN. W.C.. Unsafe operation of the unit may result if
manifold pressure is outside this range. Personal injury or
unit damage may result.
FIRE AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal iniury
or death and/or property damage.
Unsafe operation of the unit may result if manifold pressure
is outside this range.
3. Replace
cover screw cap on gas valve.
4. Turn off gas supply to unit. Remove
manometer
from
pressure tap and replace pipe plug on gas valve. Turn on gas
to unit and check for leaks.
Measure
Manifold
The main
unit rated
level specified
Proceed
Pressure
(Propane
Units)
burner orifices on a propane gas unit are sized for the
input when the manifold pressure reading matches the
in Table 3.
as follows
to adjust gas input on a propane
gas unit:
1. Turn off gas to unit.
2. Remove
pipe
plug
(See Fig. 16).
on
manifold
and
connect
manometer
C99021
AIRFLOW
Fig. 17 - Monoport Burner
AND TEMPERATURE
RISE
The heating section for each size unit is designed and approved for
heating operation within the temperature-rise range stamped on the
unit rating plate. Table 4 shows the approved temperature rise
range for each heating input, and the air delivery cfm at various
temperature rises. The heating operation airflow must produce a
temperature rise that falls within the approved range. Refer to
Indoor Airflow and Airflow Adjustments section to adjust heating
airflow when required.
LIMIT SWITCHES
Normally closed limit switch (LS) completes the control circuit
through
the thermostat R circuit. Should the leaving-air
temperature rise above the naaxinmm allowable temperature, the
limit switch opens and the R control circuit "breaks." Any
interruption in the R control circuit instantly closes the gas valve
and stops gas flow to the burners and pilot. The blower motor
continues to run until LS resets.
When the air temperature at the limit switch drops to the
low-temperature setting of the limit switch, the switch closes and
completes the R control circuit. The electric-spark ignition system
cycles and the unit returns to normal heating operation.
AUXILIARY LIMIT SWITCH (ROLLOUT)
The function of the switch is to close the main gas valve in the
event of flame rollout. The switch is located above the main
burners. When the temperature at the auxiliary switch reaches the
maximum allowable temperature, the R control circuit trips,
closing the gas valve and stopping gas flow to the burners. The
indoor (evaporator) fan motor (IFM) and induced draft motor
continue to run until switch is reset. The IGC LED will display
FAULT CODE 7.
3. Turn on gas to unit.
16
Step 4 -- Start-Up
ments
UNIT
DAMAGE
Cooling
1. Place room thermostat SYSTEM switch in OFF position.
Observe that blower motor starts when FAN switch is
placed in ON position and shuts down when FAN switch is
placed in AUTO. position.
and Make Adjust-
2. Place SYSTEM switch in COOL position and FAN switch
in AUTO. position. Set cooling control below room
temperature. Observe that compressor, condenser fan, and
evaporator blower motors start. Observe that cooling cycle
shuts down when control setting is satisfied. The evaporator
fan will continue to run for the time selected on the Easy
Select board.
HAZARD
Failure to follow this warning
damage.
could result in unit component
Complete the required procedures given in the Pro-Start-Up
section before starting the unit. Do not jumper any safety
devices
when operating
the unit. Do not operate
the
compressor
when the outdoor temperature
is below 55°F
(13°C)
(unless accessory low-ambient
kit is installed). Do
not rapid-cycle
the compressor.
To prevent
compressor
damage allow 5 minutes between "on" cycles.
CHECKING
Start and
follows:
check
COOLING
the
unit
for
CONTROL
proper
3. When using an auto-changeover room thermostat, place
both SYSTEM and FAN switches in AUTO positions.
Observe that unit operates in Heating mode when
temperature control is set to "call for heating" (above room
temperature)
and operates in Cooling mode when
temperature control is set to "call for cooling" (below room
temperature).
OPERATION
cooling
control
operation
as
Table
NUMBER OF
ORIFICES
HEATING
INPUT
(BTUH)*
3 - Heating
GAS SUPPLY
Natural
Max
13.0
13.0
13.0
13.0
13.0
Min
4.0
4.0
4.0
4.0
4.0
Inputs
PHI-SSUHI-
(IN. W.C.)
Propanet
Min
4.0
4.0
4.0
4.0
4.0
MANIFOLD
Max
13.0
13.0
13.0
13.0
13.0
PRESSURE
Natural
3.5
3.5
3.5
3.5
3.5
(IN. W.C.)
Propanet
3.5
3.5
3.4
3.7
3.5
2
40,000
2
60,000
3
90,000
3
115,000
3
130,000
* When a unit is converted to propane, different size orifices must be used. See separate, natural-to-propane
conversion kit instructions.
1- Based on altitudes from sea level to 2000 ft above sea level. For altitudes above 2000 ft, reduce input rating 4 percent for each additional 1000 ft (305 m) above
sea level. In Canada, from 2000 ft (610 m) above sea level to 4500 ft (1372 m) above sea level, de-rate the unit 10 percent.
Table
4 - Air Delivery
(CFM)
at Indicated
HEATING
INPUT
Temperature
Rise and Rated
TEMPERATURE
Heating
Input
RISE °F
(BTUH)
20
25
30
35
40
45
50
55
60
65
70
40,000
60,000
90,000
115,000
130,000
1500
2250
----
1200
1800
----
1000
1500
2250
---
857
1285
1929
2464
2786
750
1125
1688
2156
2438
667
1000
1500
1917
2167
600
900
1350
1725
1950
545
818
1227
1568
1773
500
750
1125
1438
1625
-692
1038
1327
1500
--964
1232
--
NOTE: Dashed areas do not fall within the approved
temperature
rise range of the unit.
Table
ERROR
5 - LED
Indications
CODE
LED
Normal Operation
Hardware
Failure
Fan On/Off Delay Modified
Limit Switch Fault
Flame Sense Fault
Four Consecutive
Limit Switch Faults
Ignition Lockout Fault
InducedDraft Motor Fault
Rollout Switch Fault
Internal Control Fault
Safety Critical Code Fault
NOTES:
1. There is a 3-sec. pause between error code displays.
2. If more than one error code exists, all applicable error codes will be displayed
3. This chart is on the wiring diagram located inside the burner access panel.
Table
6 - Filter
in numerical
Pressure
Drop
FILTER SIZE
in. (mm)
20X20X1
(508X508X25)
20X24X1
(508X610x25)
24X30X1
(610X762x25)
INDICATION
On
Off
1 Flash
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
7 Flashes
8 Flashes
9 Flashes
sequence.
(IN.
W.C.)
CFM
500
600
700
800
900
1000
1100
1200
1300
1400
1500
0.05
0.07
0.08
0.10
0.12
0.13
0.14
0.15
--
--
--
0.09
0.10
0.11
0.13
0.14
0.15
0.16
0.07
0.08
0.09
0.10
....
.......
17
1600
1700
1800
1900
2000
2100
2200
2300
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
Table
CFM ADJUST PIN
SELECT
EXTERNAL STATIC
PRESSURE RANGE
UNIT
SIZE
030
036
Cooling
Dry Coil ECM
042
048
060
Cabinet
HI PIN
0.0-0.39
0.4-0.69
0.7-1.0
0.0-0.39
0.4-0.69
0.7-1.0
0.0-0.39
0.4-0.69
0.7-1.0
800
725
-
885
805
730
990
930
855
715
670
-
715
695
645
795
775
745
1010
920
825
1105
1030
930
1255
1160
1050
890
845
795
890
865
825
1010
980
925
1110
1025
970
1235
1175
1115
1400
1355
1280
990
960
910
990
975
940
1125
1110
1085
Table
EASY SELECT
BOARD SETTING
Small
NOM PIN
Table 8 - 48XP Cooling
CFM ADJUST PIN
SELECT
EXTERNAL STATIC
PRESSURE RANGE (IN. W.C.)
COOLING
COOLING DEHUMIDIFY
COOLING
COOLING DEHUMIDIFY
COOLING
COOLING DEHUMIDIFY
UNIT SIZE
Airflow
LO PIN
(IN. W.C.)
COOLING
COOLING
DEHUMIDIFY
COOLING
COOLING
DEHUMIDIFY
COOLING
COOLING
DEHUMIDIFY
024
7 - 48XP
9 - 48XP
Dry (;oil ECM Airflow
Gas Heating
Large
Cabinet
LO PIN
NOM PIN
HI PIN
0.1-1.0
0.1-1.0
0.1-1.0
1 lO0
98O
1260
1120
1575
1400
1225
98O
1400
1120
1750
1400
1410
1125
1610
1290
2010
1610
ECM Airflow
Small
Cabinet
TM
Unit
Size
024
030
036
700
(CFM)
External
Static
Pressure
(IN, W,C,)
Gas Heat
Size
040
060
040
060
060
090
0.0-0.4
800
0.4-0.7
0.7-1.0
Table
EASY
Unit
SELECT
Size
TM
BOARD
External
042
048
060
10 - 48XP
11 oo
0.0-0.4
0.4-0.7
0.7-1.0
855
770
710
880
840
805
Gas
Heating
SETTING
(CFM)
Static Pressure
(IN. W.C.)
Gas Heat Size
060
090
090
115
130
090
115
130
ECM
Airflow
1250
0.0-0.4
0.4-0.7
0.7-1.0
1020
890
835
1030
1035
970
995
910
955
Large
0.0-0.4
0.4-0.7
0.7-1.0
1170
1110
1025
Cabinet
1000
1250
1600
0.0-1.0
0.0-1.0
0.0-1.0
1000
-
1250
1250
-
1600
-
1250
-
1750
18OO
0.0-1.0
0.0-1.0
1750
1600
1800
Tablell-ECMWetCoilPressureDrop(IN.W.C.)
UNIT
SIZE
024
030
036
042
048
060
STANDARD CFM (SCFM)
600
0.005
700
0.007
0.007
.....
......
800
0.010
0.010
-
900
0.012
0.012
0.019
-
1000
0.015
0.015
0.023
0.014
1100
........
0.018
0.027
0.017
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
0.021
0.032
0.020
0.027
0.024
0.037
0.024
0.032
0.042
0.027
0.036
......
0.047
0.031
0.041
0.029
.....
0.035
0.046
0.032
0.039
0.052
0.036
0.043
0.057
0.040
0.063
0.045
0.068
0.049
0.053
18
BLN
SCII_MAT IC
YEL
F_ELD
208/230-_-60
_YEL
SUPPLY
___Y__
_
_
_
OFM
//
LEGEND
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FACTORYWIRING
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W_RING
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POTENTIAL ONLY:
NOT TO REPRESENTMIRING
BR
B
CAP
COMB
CR
OLOMENREtAY
CONTACTOR
CAPACITOR
COMPRESSOR
MOTOR
COMBNSTION
RELAY
E_NIP
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POWER
F
ELANE
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FU
FUSE
MEN
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GVR
GAS VALVE RELAY
NPS
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PNN
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UNIT
COMPONENT
ARRANGEMENT
GRA
OUTDOOR FAN
SECT ON
ORN
EQUIP
GND k
I
B[U
v_o
SECTION
:APE
vlo
BIN
BLK
WET
WHT
_
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PER NEC
COMP
MOUNTING PANEL ABOVE
INDOOR BLOWER
C
s
R
GAS SECTION
_
NORNALOPERATIO_
_
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FAIlUrE
OF_
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I _LAS_
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R RLAS_ES
FLAMESENSERAULT
3 _tASNES
S CONSECUTIVEtlMIT SWlTC_ _AUtTS
4 _t_S_ES
EGN_EON LOCEOUT_AU_T
S ELAS_ES
_NDUCERSWlTD_ _AULT
6 _tAS_ES
ROLLOUTSMITD_ FAULT
7 ELAS_ES
EN_ERNALCONTROLEAN[T
8 ELASNES
TEMPORARY
ONE _OU_AUTOMATIC_ESET EANLT_NOTE9} 9 ELASNES
B SECOND_A_SE BETWEENERRORCODE_ISRtAY
2 _F MORET_AN ONE ERROREXISTS, ALL APPLICABLEERRORCODES
S_ALL BE DISRtAYED IN NUMERICAtSEQUENCE
NOTES:
i1[ ANYo_ T1_£ORIGINAL WIRESFURNISDED
ARE REPLACED,
IT MUSTBE REPLACEDWITR TYPE 9O _EMREED MIREOR
ITS EQUIVALENT
2 SEE _RICE _AGES _OR TI_[RNOSTAT
ANDSUEBASES
SUSE ;5 DEGREECOPPERCORRUPTORS
FOR F_ELR E_STALLAfEON
4 REPLACELOWVOLTAGEFUSES M_TRNOGREATERTHAN5 A_P FUSES¸
S ON MODE_S4BGPR24 0_ HASLS] _ND LSE _N SER_ES
ON_ODELS 48GPO4R060 _AS LSE O_LY
6_E_OVE J_ MHENUSING THER_R_STAT/ HU_R_STAT ANR
DEHR_O_F_CAT_ON_ORE
_RE_OVE J_
B TO 8E W_RER_ ACCORRA_CE
MET_ NEC A_DLOCALCODES¸
_T_S
CODE_D_CA_ES A_ [_1ER_AL PROCESSOREA_LT T_ATWILL
RESET _TSELF _N ONE_OUR FAUtT CAN 6E CENSERBY STRAY_E
S_GNELS _ THE STRUCTURE
OR _EARBY TIHS IS A Ut REQUIREMENT
EAUtT
[OT_[S
FUSE [S MANUFACTURED
B_ LITTEtEUSE, R/N RS_OOS
A08462
Fig. 18 - 208/230-1-60
Wiring
19
Diagram,
Unit 48XP
SCHEMATIC
208/230-3-60
FIELD
BLK
SUPPLY
YEL
fEL
O\Ti__
__
__]_2_
EQU
POWER
,[/
8LU
tP_GND
C
OFM
BLN
BLH
OR
+iL
LEGEND
_P_ELD
Q
SPLICE
TERNINAL
{MAR_ED)
TERMINAL
SPLICE
(UNMARKED)
C],SPLICE
(MARKED)
--FACTORY
-- -- FIELD
WIRING
CONTROL WIRENG
R
CONPRESSOR
CR
COMBUSTION
COOLING
BLK
YEL
E
EC_
IDW
PL4+4
ENROOR FAN MOTOR
INTEGRATED
GAS UNIT
CONTROLLER
LOW PRESSURE
SWETCH
L{N{T
SWITCH
MAiN GAS VALVE
RELAY
_R_AN
OUTDOOR
FAN MOTOR
QUADRUPLE
TERMINAL
ROLLORT
SWITCH
IRANSFORmE R
PRIMARY
LOGIC
YE
T130
TRANI
_
W BR
ENERGIZED
LOGIC
--RED
IGC
CR
BOX
-RED
BR
--ORN--
JR
I_
PLB'B
5
--_L__2_
)>-RED
PL?-3
-vv_
OFF
L--
_
//
/ /
T
BRA_
I
NOTE I0
_._EE
-SEE NOTE_5
RE]
AMP
SEE NOTE lOJ
+RN--
-f+2+-
PL2-1
OFF
.E_T
meT-GNU" YE L_
{_
-WHT
[------
oT
+-
-BLH
SPLICE
I
II
R4V
SECONDARY
W
BR
DE-ENERGIZED
24V
I DM
YEL
DE-ENERGIZED
PAN
_FN
--GRN-YEL_
tFM
IGC
OFM
OT
_
HEATING
ONLY
EGNITOR
ENTEGRATED
CONTROL
_OTOR
iNDUCER DRAFT MOTOR
LPS
LS
NOV
FAN
UNITS
+
++
SENSOR
GAS VALVE
RELAY
HiGH PRESSURE
SWITCH
HALL EFFECT SENSOR
H{GH VOLTAGE TRANSFORMER
MOTOR
&
G
ENERGIZED
FLAME
FUSE
GROUND
BLOWER RELAY
CONFACTOR
CAPACITOR
COMP
FS
GVR
HPS
HS
HV TRAN
INDICATE
COMMON
POTENTIAL
ONLY:
NOT TO REPRESENT
WIRING
CAP
EQUIPMENT
FU
GND
--FIELD POWER WIRING
---- ACCESSORY
OR OPTIONAL
WIRING
--TO
EQUIP
042-060
MGV
_--WHT
_HEAT
-----SRA _
YEL
OAUTO
PLZ-R
FLAME
_COOL
TCI
Y_
_--YEL
--Y
123
C_I>--
o_
BR_
H_
--BRN
TOTRANS
_--BRN
TO CONT
;ROUNDED
IHRU STANDOFF
C_13---
.J
-_o
_RN-YEL
GRN---)>--
I
I
AUTO
0--
PL?-T
....
SEN
E L---o [
SECT
ON
--
_--BRN
I
I
--
FIELD-THERMOSTAT
_7_B
PLI
L KHPs_BL
H---_BL
U_)_BL
U--
BRR --
_
BRN --
COMMON
....
UNIT
SECTION
OUTDOOR
EAR
COMPONENT
ARRANGEMENT
E_->_
[]
EQU
GND
SECTION
..... E....
, SECTION
_ND_OOR
FAN
>_GC
BRR--
I CONTROL
EII_
-GRA
ORN
-ORN
BLU
-BLU
v_o
-VIO
BOX
-BLN
[_
-WHT
Wilt
NOTES:I_F
_
E
MOUNTING
_NDOOR
c s
R
GAS
ss£
SECTION
PANEL
BLOWER
ABOVE
ANy OF
iT _UST
THE ORIGINAL
BE REPLACED
WIRES FURNISHED
ARE REPLACRD,
W_TR TYPE gO DEGREE
C _IRE
OR
RARD_ARE FAILURE
FAN ONIOFF DELAY NOD{PiED
NORMAL SWITCH
OPERA_IO_
LIMIT
FAULT
PLANE SENSE FAULT
OFF
_ FLASH
Z FLASHES
3 FLASHES
Z SEE PRICE PAGES FOR THERMOSTAT AND SUBBASES
3USE
75 DEGREE COPPER CONDUCTORS
FOR F_ELD _NSTALLAT_ON
ITS EQUIVALENT
4REPLACE
LOW VOLTAGE FUSES W_TH NO GREATER THAN S A_P FUSES
SON
_ODZLS 4RXPOZ_+O)6 HAS ISI AND LS2 _N SERIES
_GNIT_ON
5
CONSECUTIVE
LOCKOUT
LI_[T
FAULT
SWITCH FAULTS
{NRVCER SW_TCN FAULT
ROLLOUI SWITCH FAULT
iNTERNAL CONTROL FAULT
TEMPORARY ONE HOUR AUTO_IATIC RESET _AULT (NOTE 9}
[
3 SECOND PAUSE BETWEEN ERROR CODE D_SPLAY
_
6
T
B
9
ON MODELS _8XPO_2"060 HAS LS[ ONLY
6REMOVE
J[ WHEN USING TRER_IDISTA_I
HU_IDISFAI AND
DEHUmIDIFICATiON
MODE
?REMOVE
J2
8TO
BE WIRER IN ACCORDANCE
_ITH NEC AND LOCAL CODES
9THIS
CODE INDICATES AN [NTERNAL PROCESSOR FAULT THAT W[LL
Z
If _ORE THAN ONE ERROR EXISTS+ ALL APPLICABLE
SHALL RE DISPLAYED
{N NUMERICAL SEQUENCE
FLASHES
FLASHES
FLASHES
FLASHES
FLASHES
ERROR CODES
RESET [TSELP I_ ONE HOUR
FAULT CAN BE CAUSED BY STRAY RP
SIGNALS IN THE STRUCTURE OR NEARBY
THIS IS k UL REQUIREMEN_
FAULT
!48XP500149 16,0
A08463
Fig. 19 - 208/230-3-60
Wiring
20
Diagram,
[]nit 48XP
Required
Subcoolin_
Outdoor
Model
oF IoC)
Ambient
Required
Temperature
Required
Liquid Line Temperature
Subcooling
for a Specific
Subcooting
(°F)
(R-41OA)
Required
Subcooling
(°C)
Size
75 (24)
024
82 (26)
10.3(5.7)
86 (29)
9.8(5.4)
96 (85)
9.4(6.2)
105 (41)
9(5)
Pre_sur,
5
10
15
20
26
Pre_sur_
(kPa)
3
6
8
11
14
189
61
56
51
46
41
1303
16
13
11
8
5
7(3.9)
196
63
58
53
48
43
1351
17
18
12
9
6
16
17
13
14
10
11
8
9
8.6(4.7)
030
9.3 ( 5.2 )
8.8 ( 4.9 )
8.6 ( 4.8 )
036
042
17.6(9.8)
12.8(7.1)
16.8 (9.3)
12.7(7.1)
16.6 (9.2)
12.7(7.1)
16.4 (6.6)
12.6(7)
14.3(7.9)
12.6(7)
203
210
66
68
61
63
66
68
51
53
46
48
1399
1448
19
20
17.5(9.7)
16.9(9.4)
16.6(9.2)
16.7
(6.7)
14.8(8.2)
217
70
66
60
55
50
1496
21
18
15
13
10
13.7(7.6)
13(7.2)
16(7.2)
14.6
(6.1)
11.5(6.4)
224
72
67
62
57
52
1544
22
19
16
14
11
231
74
69
64
59
54
1593
23
20
18
15
12
238
76
71
66
61
56
1641
24
21
19
16
13
245
77
72
67
62
57
1689
26
22
20
17
14
252
79
74
69
64
59
1737
26
23
21
18
15
260
81
76
71
66
61
1792
27
25
22
19
16
268
83
76
73
68
63
1848
29
26
23
20
17
276
85
80
78
70
66
1903
30
27
24
21
19
284
87
82
77
72
67
1956
31
28
25
22
20
292
300
89
91
84
86
79
61
74
76
69
71
2013
2066
32
33
29
30
26
27
23
24
21
22
309
93
88
63
78
73
2130
34
31
28
26
23
316
95
90
65
80
76
2192
36
32
29
27
24
327
336
97
92
67
82
77
2254
36
33
31
28
25
99
94
69
84
79
2316
37
34
32
29
26
345
364
101
96
91
86
81
2376
38
35
33
30
27
103
98
93
88
83
2440
39
36
34
31
28
364
105
100
95
90
86
2509
40
38
35
32
29
374
107
102
97
92
87
2576
41
39
36
33
30
384
108
103
98
96
88
2647
42
40
37
34
31
394
110
106
100
95
90
2716
44
41
38
35
32
4O4
112
107
102
97
92
2786
45
42
39
36
33
414
114
109
104
99
94
2854
46
43
40
37
34
424
116
111
106
101
96
2923
47
44
41
38
35
434
118
113
108
103
98
2992
46
45
42
39
36
444
119
114
109
104
99
3061
46
46
43
40
37
454
121
116
111
106
101
3130
49
47
44
41
38
464
123
118
113
108
103
3199
50
48
45
42
39
474
124
119
114
109
104
3266
51
48
46
43
40
464
494
126
127
121
122
116
117
111
112
106
107
3337
3406
52
53
49
50
47
47
44
45
41
42
5O4
129
124
119
114
109
3476
54
51
48
46
43
514
131
126
121
116
111
3544
55
52
49
46
44
524
132
127
122
117
112
3612
56
63
50
47
45
534
134
129
124
119
114
3661
56
64
51
48
45
046
060
Charqinq
1- Meacure
Procedure
Di¢charge
line preceure
2- Meacure the Liquid
device to it.
by attaching
line temperature
3- Ineulate the temperature
doe_=n'_affect
the reading.
ceneing
value€.
if the Outdoor
Extrapolate
in the
ambient
8- Add Charge
Ambient
lie_ in between
the
to obtain
temperature
Outdoor
port.
Ceneing
on the model
¢ize and
the table
table range.
in the table corre¢ponding
Di¢charge
line.
if the meaeured
50XZ500174
table baeed
lie€ beyond
7- Read acro¢_= from the Preeeure reading
temperature
for a required Subcooling
to the _ervice
a temperature
_=o that the
temperature
if the temperature
6- Find the Pree_ure Value
Pre¢¢ure of the Compre¢eor
a gauge
by attaching
device
4- Refer to the required
Subcooling
the Outdoor
Ambient temperature.
5- Interpolate
7.6 ( 4.3 )
to the the
the Liquid
i¢ higher than the
meaCured
line
table value.
]
C03027
IMPORTANT:
Three-phase,
direction-oriented.
compressor
5 minutes,
3-phase
suction
scroll
units must be checked
to ensure
proper
3-phase power lead orientation.
If not corrected within
the internal
protector
shuts off the compressor.
The
power
rotation.
elevated
These
Fig. 20 - Cooling Charging
Table-Subcooling
compressor
units
are
To Use Cooling Charging
leads
When
noise
The refrigerant
unit
and
the
pressures
be
scroll
difference
reversed
to correct
compressors
between
emit
compressor
REFRIGERANT
is fully charged
with
CHARGE
R-410A
refrigerant,
tested, and factory-sealed.
NOTE:
Adjustment
the unit is suspected
An
accurate
of the refrigerant
of not having
superheat,
charge
the proper
thermocouple-
is not required
R-410A
or
unless
charge.
thermistor-type
thermometer,
and a gauge manifold
are required when using the
subcooling
charging method for evaluating the unit charge. Do not
use mercury or small dial-type thermometers
adequate for this type of measurement.
UNIT
DAMAGE
the liquid
line temperature
and read the manifold
gauges. Refer to the chart (See Fig. 20) to determine
liquid line temperature
should be.
NOTE:
If the
refrigerant
leak, refer to the Check
problem
causing
INDOOR
AIRFLOW
the
inaccurate
for Refrigerant
AND AIRFLOW
pressure
what
readings
the
is a
Leaks section.
ADJUSTMENTS
may be zero.
AND ADJUSTING
system
must
backwards,
levels,
and discharge
CHECKING
to the
turning
Take
Charts
because
they are not
For cooling operation, the recommended
airflow is 350 to 450 cfm
for each 12,000
Btuh of rated cooling
capacity.
For heating
operation,
the airflow must produce a temperature
rise that falls
within the range stamped on the unit rating plate. Table 4 shows
the temperature
rise at various airflow rates. Table 7 & 8 show
cooling
airflows
at the
selection
to these
installed.
pin ranges (depending
on external static pressure).
tables to determine
the airflow
for the system
Refer
being
NOTE:
and Table
Be sure that all supply-
free from obstructions,
HAZARD
Failure to follow this caution may result in unit damage.
When evaluating the refrigerant charge, an indicated
adjustment to the specified factory charge must always be very
minimal. If a substantial adjustment is indicated, an abnormal
condition exists somewhere in the cooling system, such as
insufficient airflow across either coil or both coils.
airflows
9 & 10 show
and return-air
and adjusted
ELECTRICAL
SHOCK
Failure to follow
or death.
this warning
heating
grilles
are open,
properly.
HAZARD
could result in personal
iniury
Before making any indoor wiring adjustments,
shut off gas
supply. Then disconnect electrical power to the unit.
Airflow can be changed
Select circuit board.
21
by changing
the selection
pins on the Easy
AIR FILTER
MAINTENANCE
To ensure continuing high performance and to minimize the
possibility of premature equipment failure, periodic maintenance
must be performed on this equipment.
This combination
heating/cooling unit should be inspected at least once each year by
a qualified service person. To troubleshoot cooling or heating of
units, refer to Tables 12, 13 and 14.
NOTE:
Consult your local dealer about the availability of a
maintenance contract.
NOTE: Never operate the unit without a suitable air filter in the
return-air duct system. Always replace the filter with the same
dimensional size and type as originally installed. (See Table 1 for
recommended filter sizes.)
Inspect air filter(s) at least once each month and replace
(throwaway-type) or clean (cleanable-type) at least twice during
each heating and cooling season or whenever the filter(s) becomes
clogged with dust and/or lint.
EVAPORATOR
BLOWER
AND MOTOR
NOTE: All motors are prelubricated. Do not attempt to lubricate
these motors.
PERSONAL
Failure
INJURY
AND UNIT
to follow this warning
or death and unit component
DAMAGE
HAZARD
could result in personal
injury
damage.
The ability to properly
perform
maintenance
on this
equipment requires certain expertise, mechanical
skills, tools
and equipment.
If you do not possess these, do not attempt to
perform any maintenance
on this equipment,
other than those
procedures recommended
in the Owner's Manual.
ELECTRICALSHOCK
For longer life, operating economy, and continuing efficiency,
clean accumulated dirt and grease from the blower wheel and
motor annually.
CLEANING THE BLOWER MOTOR AND WHEEL
1. Remove and disassemble blower assembly as follows:
a. Remove unit access panel.
b. Disconnect motor lead from blower relay (BR).
Disconnect yellow lead from terminal L2 of the
contactor.
c. On all units, remove blower assembly from unit.
Remove screws securing blower to blower partition and
slide assembly out. Be careful not to tear insulation in
blower compartment.
d. Ensure proper reassembly by marking blower wheel and
motor in relation to blower housing before disassembly.
e. Loosen setscrew(s) that secures wheel to motor shaft.
Remove screws that secure motor mount brackets to
housing, and slide motor and motor mount out of
housing.
2. Remove and clean blower wheel as follows:
HAZARD
Failure to follow these warnings could result in personal
iniury or death:
1. Turn off electrical power to the unit before performing
any maintenance or service on this unit.
2. Use extreme caution when removing panels and parts.
3. Never place anything combustible either on or in contact
with the unit.
a. Ensure proper reassembly by marking wheel orientation.
b. Lift wheel from housing. When handling and/or
cleaning blower wheel, be sure not to disturb balance
weights (clips) on blower wheel vanes.
c. Remove caked-on dirt from wheel and housing with a
brush. Remove lint and/or dirt accumulations from
wheel and housing with vacuum cleaner, using soft
brush attachment. Remove grease and oil with mild
solvent.
4. Should overheating occur or the gas supply fail to shut
off, turn off external main manual gas valve to the unit.
Then shut off electrical supply.
UNIT OPERATION
Failure to follow
operation.
HAZARD
this caution
may result in improper
d. Reassemble wheel into housing.
e. Reassemble motor into housing. Be sure setscrews are
tightened on motor shaft flats and not on round part of
shaft.
Errors made when reconnecting wires may cause improper
and dangerous
operation. Label all wires prior to
disconnecting when servicing.
The minimum maintenance requirements for this equipment are as
follows:
1. Inspect air filter(s) each month. Clean or replace when
necessary. Certain geographical locations may require more
frequent inspections.
2. Inspect indoor coil, outdoor coil, drain pan, and condensate
drain each cooling season for cleanliness. Clean when
necessary.
f. Reinstall unit access panel.
3. Restore electrical power to unit. Start unit and check for
proper blower rotation and motor speeds during heating and
cooling cycles.
FLUE GAS PASSAGEWAYS
To inspect
exchanger:
1. Remove
according
section.
3. Inspect blower motor and wheel for cleanliness at the
beginning of each heating and cooling season. Clean when
necessary. For first heating and cooling season, inspect
blower wheel bi-monthly to determine proper cleaning
frequency.
2. Remove
collector
3. Remove
flue
collector
box
the combustion
to
directions
6. Check flue hood and remove any obstructions, if necessary.
22
in
wheel
the
areas
of the heat
and motor
Combustion-Air
the blower
housing
assembly
Blower
to the flue
box cover (See Fig. 23).
the 12 screws holding
4. Clean all surfaces,
each heating
and upper
blower
the 3 screws holding
(See Fig. 24) to the heat
heat exchangers.
4. Check electrical connections for tightness and controls for
proper operation each heating and cooling season. Service
when necessary.
5. Check and inspect heating section before
season. Clean and adjust when necessary.
the
the flue collector
exchanger
as required,
assembly.
using a wire brush.
box cover
Inspect
the
COMBUSTION-AIR
BLOWER
Clean periodically
to assure proper airfow and heating efficiency.
Inspect blower wheel every fall and periodically
during the heating
season.
For the first heating
season,
inspect
blower
wheel
bimonthly
to determine
proper cleaning
frequency.
To inspect
blower wheel, remove draft hood assembly. Shine a flashlight into
opening to inspect wheel.
and wheel as follows:
1. Remove
is required,
remove
motor
unit access panel (See Fig. 22).
2. Remove
the
mounting
3. Slide
If cleaning
7 screws
that
plate to blower
the
motor
attach
housing
and blower
induced-draft
motor
(See Fig. 23).
wheel
assembly
out
of the
blower housing (See Fig. 23). Clean the blower wheel. If
additional cleaning is required, continue with Steps 4 and 5.
4. To remove
blower,
remove
2 setscrews
5. To remove
motor and cooling
screws that hold blower housing
6. To reinstall,
fan assembly,
remove
to mounting plate.
reverse the procedure
LIMIT
SWITCH
Remove
unit access
panel.
Limit
(See Fig. 23).
switch
outlined
4
Straighten bent fins with a fin comb. If coated with dirt or lint,
clean the coils with a vacuum cleaner, using the soft brush
attachment. Be careful not to bend the fins. If coated with oil or
grease, clean the coils with a mild detergent-and-water
solution.
Rinse coils with clear water, using a garden hose. Be careful not to
splash water on motors, insulation, wiring, or air filter(s). For best
results, spray condenser coil fins from inside to outside the unit. On
units with an outer and inner condenser coil, be sure to clean
between the coils. Be sure to flush all dirt and debris from the unit
base.
Inspect the drain pan and condensate drain line when inspecting
the coils. Clean the drain pan and condensate drain by removing all
foreign matter from the pan. Flush the pan and drain tube with
clear water. Do not splash water on the insulation, motor, wiring, or
air filter(s). If the drain tube is restricted, clear it with a "plumbers
snake" or similar probe device. Ensure that the auxiliary drain port
above the drain tube is also clear.
INDUCED
above.
is located
DRAFT
MOTOR
MOUNT
<
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