Carrier Infinity 480CEN024 User manual

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
Page
SAFETY CONSIDERATIONS ........................ 1
INTRODUCTION .................................. 2
RECEIVING AND INSTALLATION ................ 2-15
Check Equipment ................................. 2
Identify Unit ................................... 2
Inspect Shipment ................................ 2
Provide Unit Support .............................. 2
Roof Curb ..................................... 2
Slab Mount .................................... 2
Ground Mount ................................. 2
Field Fabricate Duc_vork ........................... 2
Provide Clearances ................................ 3
Rig and Place Unit ................................ 3
Inspection ..................................... 3
Use of Rigging Bracket ........................... 3
Connect Condensate Drain .......................... 8
Install Flue Hood .................................. 8
Install Gas Piping ................................ 11
Install Duct Connections ........................... 12
Configuring Units for Downflow (Vertical)
Discharge .................................... 12
Install Electrical Connections ....................... 12
Transfornmr Protection .......................... 13
High- Voltage Connections ....................... 13
Special Procedures for 208-V Operation ............. 14
Control Voltage Connections ...................... 14
Optional Accessories .............................. 14
Outdoor Air Thermistor (OAT) .................... 14
Humidifier Connections ......................... 15
Electronic Air Cleaner ........................... 15
PRE-START-UP ............................... 15-16
START-UP AND TROUBLESHOOTING ........... 16-20
Check for Refrigerant Leaks ........................ 16
Unit Start-Up ................................... 16
LED Description ............................... 16
Control Start-Up ............................... 16
ECM Motor Troubleshooting ..................... 17
Verify Motor Winding Section .................... 17
Motor Turns Slowly ............................ 17
Sequence of Operation ............................ 17
Gas Heat Mode and Adjustments .................. 17
Check Gas Input ............................... 17
Adjust Gas Input ............................... 18
Check Burner Flanm ............................ 18
Airflow and Temperature Rise ..................... 18
Limit Switches ................................ 19
Rollout Switch ................................ 19
Cooling Mode ................................. 19
Checking and Adjusting Refrigerant Charge .......... 19
A05307
Fig. 1-Unit 48CE
Dehumidification Mode ......................... 19
Continuous Fan Mode ........................... 20
Component Test ............................... 20
Unit Troubleshooting ............................. 20
Indoor Airflow and Airflow Adjustments .............. 21
MAINTENANCE ............................... 24-26
Air Filter ....................................... 24
Indoor Blower and Motor .......................... 24
Outdoor Coil, Indoor Coil. & Condensate Drain Pan ..... 24
Outdoor Fan .................................... 24
Electrical Controls and Wiring ...................... 25
Refrigerant Circuit ................................ 25
Indoor Airflow .................................. 25
Metering Devices-TXV & AccuRater 'Piston ......... 25
Pressure Switches ................................ 25
Loss-of-Charge Switch ........................... 25
High Pressure Switch ............................. 25
Copeland Scroll Compressors (Puron Refrigerant) ....... 25
Refrigerant System ............................... 25
Refrigerant ................................... 25
Compressor Oil ................................ 25
Servicing Systems on Roofs with Synthetic Materials ... 26
Liquid Line Filter Drier .......................... 26
Puron (R-410A) Refrigerant Charging .............. 26
TROUBLESHOOTING ............................. 26
START-UP CHECKLIST ........................... 26
SAFETY CONSIDERATIONS
Installation and servicing of this equipment can be hazardous due to
mechanical and electrical components. Only trained and qualified
personnel should install, repair, or service this equipment.

n
Untrained personnel can perform basic maintenance functions such
as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. When working on this
equipment, observe precautions in the literature, on tags, and on
labels attached to or shipped with the unit and other safety
precautions that may apply.
Follow all safety codes. Installation must be in compliance with
local and national building codes. Wear safety glasses, protective
clothing, and work gloves. Have fire extinguisher available. Read
these instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit.
Recognize safety information. This is the safety-alert symbol ,/_
When you see this symbol on the unit and in instructions or manuals.
be alert to the potential for personal injury.
Understand these signal words; DANGER, WARNING, and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies 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 personal injury
or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before installing or servicing system, always turn off main
power to system. There may be more than one disconnect
switch. Turn off accessory heater power switch if applicable.
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in unit component
damage.
Puron (R-410A) systems operate at higher pressures than
standard R-22 systems. DO NOT use R-22 service
equipment or components on Puron (R-410A) equipnmnt.
Ensure service equipment is rated for Puron (R-410A).
INTRODUCTION
The 48CE unit (see Fig. 1) is a fully self-contained, combination
Category I gas heating/electric cooling unit designed for outdoor
installation (See Fig. 5 and 6 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 rooftop, a cement slab. or directly on the ground if local codes
permit (See Fig. 7 for roof curb dimensions).
Models with an N in the fifth position of the model number are
dedicated Low NOx units designed for California installations.
These 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.
NOTE: Low NOx requirements apply only to natural gas
installations.
RECEIVING AND INSTALLATION
Step I--Check Equipment
IDENTIFY UNIT
The unit model number and serial number are stamped on the unit
identification 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 removal. Forward
claim papers directly to transportation company. Manufacturer is
not responsible for any damage incurred in transit. Check all items
against shipping list. Inmrediately notify the nearest Carrier Air
Conditioning office if any item is missing. To prevent loss or
damage, leave all parts in original packages until installation.
Step 2--Provide Unit Support
ROOF CURB
Install accessory roof curb in accordance with instructions shipped
with curb (See Fig. 2). Install insulation, cant strips, roofing, and
flashing. Ductwork must be attached to curb.
IMPORTANT: The gasketing of the unit to the roof curb is critical
for a water tight seal. Install gasketing material supplied with the
roof curb. Improperly applied gasketing also can result in air leaks
and poor unit performance.
Curb should be level to within 1/4 in. This is necessary for unit drain
to function properly. Refer to accessory roof curb installation
instructions for additional information as required.
SLAB MOUNT
Place the unit on a solid, level concrete pad that is a minimum of 4
in. thick with 2 in. above grade (See Fig. 7). The slab should extend
approximately 2 in. beyond the casing on all 4 sides of the unit. Do
not secure the unit to the slab except when required by local codes.
GROUND MOUNT
The unit may be installed either on a slab or placed directly on the
ground if local codes permit. Place the unit on level ground prepared
with gravel for condensate discharge.
Step 3--Field Fabricate Ductwork
Secure all ducts to roof curb and building structure on vertical
discharge units. Do not connect ductwork to unit. For horizontal
applications, unit is provided with flanges on the horizontal
openings. All duc_vork should be secured to the flanges. Insulate
and weatherproof all external duc_vork, joints, and roof openings
with counter flashing and mastic in accordance with applicable
codes.
Ducts passing through an unconditioned space must be insulated
and covered with a vapor barrier.
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.

Aminimumclearanceisnotrequiredaroundductwork.Cabinet
return-airstaticshallnotexceed-.25in.wg.
Step 4--Provide Clearances
The required minimum operating and service clearances are shown
in Fig. 5 and 6. Adequate combustion, ventilation and condenser air
nmst be provided in accordance with section 5.3. Air for
Combustion and Ventilation, of the National Fuel Gas Code ANSI
(American National Standards Institute) Z223.1 or applicable
provisions of local building code. In Canada, follow sections 7.2,
7.3, or 7.4 or Can/CGA. (Canadian Gas Association) B149
Installation (;odes or applicable provisions of local building code.
IMPORTANT: Do not restrict outdoor airflow. An air restriction at
either the outdoor-air inlet or the fan discharge may be detrimental
to compressor life.
The condenser fan pulls air through the condenser coil and
discharges it through the top cover. 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 under a partial overhang (such as a normal house
overhang) is 48-in. above the unit top. The maximum horizontal
extension of a partial overhang must not exceed 48-in.
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. Slab-mounted units
should be at least 4 in. above the highest expected water and runoff
levels. Do not use unit if it has been under water.
Step 5--Rig and Place Unit
Rigging and handling of this equipment can be hazardous for many
reasons clue to the installation location (roofs. elevated structures,
etc.).
Only trained, qualified crane operators and ground support staff
should handle and install this equipment.
When working with this equipment, observe precautions in the
literature, on tags, stickers, and labels attached to the equipment, and
any other safety precautions that might apply.
Training for operators of the lifting equipment should include, but
not be limited to. the following:
1. Application of the lifter to the load, and adjustment of the
lifts to adapt to various sizes or kinds of loads.
2. Instruction in any special operation or precaution.
3. Condition of the load as it relates to operation of the lifting
kit, such as balance, temperature, etc.
Follow all applicable safety codes. Wear safety shoes and work
gloves.
INSPECTION
The lifting/rigging bracket is engineered and designed to be
installed only on Small Packaged Products. This bracket is to be
used to rig/lift a Small Packaged Product onto roofs or other
elevated structures.
Prior to initial use. and at monthly intervals, all rigging brackets and
straps should be visually inspected for any damage, evidence of
wear. structural deformation, or cracks. Particular attention should
be paid to excessive wear at hoist hooking points and load support
areas. Brackets or straps showing any kind of wear in these areas
must not be used and should be discarded.
UNIT FALLING HAZARD
Failure to follow this warning could result in personal injury
or death.
Never stand beneath rigged units or lift over people.
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in personal
injury/death or property damage.
Rigging brackets for one unit use only. When removing a
unit at the end of its useful life. use a new set of brackets.
USE OF RIGGING BRACKET
Field Installation of Ri_in_ Bracket (if not already installed)
1. Remove unit from shipping carton. Leave top shipping skid
on the unit for use as a spreader bar to prevent the rigging
straps from damaging the unit. If the skid is not available, use
a spreader bar of sufficient length to protect the unit from
damage.
2. Remove 4 screws in unit corner posts.
3. Attach each of the 4 nmtal rigging brackets under the panel
rain lip (See Fig. 3). Use the screws removed in step 2 above
to secure the brackets to the unit.
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in personal
injury/death or property damage.
Rigging bracket MUST be under the rain lip to provide
adequate lifting.
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in personal
injury/death or property damage.
Do not strip screws when re-securing the unit. If a screw is
stripped, replace the stripped one with a larger diameter screw
(included). When straps are taut, the clevis should be a
minimum of 36 inches above the unit top cover.
Rig_in_/Liftin_ of Unit
1. Bend top of brackets down approximately 30 degrees from
the corner posts (See Fig. 4).
2. Attach straps of equal length to the rigging brackets at
opposite ends of the unit. Be sure straps are rated to hold the
weight of the unit (See Fig. 4).
3. Attach a clevis of sufficient strength in the middle of the
straps. Adjust the clevis location to ensure unit is lifted level
with the ground.
4. After unit is securely in place detach rigging straps. Remove
corner posts, screws, and rigging brackets then reinstall
screws.
After the unit is placed on the roof curb or mounting pad. remove
the top crating. On 48CE060 units only, 2 wire ties fastened to the
outdoor coils and reversing valve/accumulator assembly nmst be
cut. Remove the left and front louvered panels and corner post to
access wire ties. The wire tie to be cut on the left is located
approximately 4 in. down the tube sheet. The wire tie to be cut on
the right is located approximately 6 in. down the tube sheet.
n

DETAIL A
Fig. 3-Rigging Bracket Under Unit Rain Lip
C03017
MINIMUM HEIGHT: 36
UNIT HEIGHT
SEE DETAIL
A06113
UNIT SIZE
480E024
48CE030
48CE036
480E042
48CE048
48CE060
MAXIMUM SHIPPING WEIGHT
Lb
384
384
4O6
437
487
537
Kg
174
174
184
198
22O
243
Fig. 4-Suggested Rigging

2541 _5460 _: 2541
i10 001 [21 50] Ii
13 39]
suPRcY/
T
406 5
[16 O!] !
f
LDt
;_80 5
3171
1533
[6 04]
TOP VIEW
ELECTRICAL
CSARACIERISTICS
208 230 ! 60
2081230160, ZO81RB03 80
208/230160, 208/730 360
CORNERWEIGH[ LSS IK8
A B C D
024 78/354 !R/35_ 72_'32 713_/6o8
030 78/35 4 78/354 72/327 134/608
791358 891404 721327
_7986 3 441
FELD EtilRT
SERVICE ?ORTS_
-'
1901075] N P T
X 220_08/] DEEP _ 3265
1!2 65]
_83/0
LEFT SIDE VIEW
570 3
[2245]
}
_-so
468 _ NPT [O 20]
[S 841 GAS ENTRY
FRONT VIEW
UNIT WT ,UNii HEIGHT CENTER OF GRAVITY _liN
ILii]Tl_G i "£
1642 i 991113g021
164 2i 99i ![3902] 508 0i20 O] 447 0[!76i
REQUIRED CLEARANCES TO C_BUSTIBLE MATL MILLIMETERS [iN]
TOP OR UNIT 3§5 6 [_4 00]
88CT RiD{ OF UNIT ............................ 508 12 00]
SIDE OPPOSITE DUCTS................... 355¸6 [_400]
BOTTOM OR UNIT IR 7 iO 50]
RLECT_IC _EAT PANEL ............................ 914¸4 [3600]
NEC. _C¢IIRED CLEARANCE& MILLIMETERS [IN]
BEi_EER 8_iS, POWER ENTRY RISE ............ _0668 [42 00]
8_iT AND UNGROUNDEDSURFACES, POWCRE_TRY Si_C 914 0 [36 00]
UNiT AND 8LOC_ OR CONCRETE _ALL3 AND OTHER
8_OUNSED SURFACES, POWER ENTRY SI_E ...... i056 8 [42 00]
RE_RED CLEARANC_ FOR OPERATION AND SERVICING MILLIMETERS [IN]
RVAP COIL ACCESS Si_R 914 0 [3_ 00]
PO_ER ENT_¥ SIDE ........................................ 914¸0 [36¸00)
ICXCE?T FOR NEC REOUIRE_£_TS)
8_iT TOP ....................... 914¸0 [36 00]
SIDE OPPOSITE DUCIR ..................................... 914¸0 [3600]
O_CT FANEL ......... 384 8 [_2 00]_
_MINIMU_ _ISTANRES:iF UNII i3 PLACED LESS tHAN 504¸8 [IZOOI RROMWALL
SYSiE_,THEN SfSTE_ PERRORMARCEMAfBE COMPROMISED
DIMENSIONS IN [} ARE IN iNCHES
RIGHT SIDE VIEW
' C
4020
15 83
i_ 631
[3 53]
2496
1983]
FL
• °
SUPPLY RETU£N
_UCT
OPENING
_5505 [21 6/] _
24_ 6
[983i
REAR VIEW
Fig. 5 -48CE024-036 Unit Dimensions
A06019

4066
t
TOP VIEW
tSUPPLY
U_IT
48CE042060/090
i48CE048090/ii2/130i
i48CEO60090/HR//30i
ElECTRiCAL
C[_ARACTE[_!SIES
208 232 / 60, 2081260 2 60
208 230 I 60, 208/220 R 60
2O8230160, 208/230¸3¸60
i CORNER WEiGld LBS IKG iREQUIRED CLEARAI_CES TO CGMBUSTIELE I@IPL
_ILLIMET[R6 HNi
iOP O_ UNII ........................ 355¸6 [i400]
OUCT SIDE OF gRiT 50 8 [2 00]
61DE OPPOSITE DUCTS ............................ 355¸6 [14 00]
BOIiOM OF U_]T ................................. 127 [050_
EEECT21¢ HEAT PANEl¸ 914 4 [3_ OOi
NEC. REQUIRED CLEt_fIAIt_ES. MILLIMETERS ilN]
BETWEEN UNITS, POWER ENTRY SIRE ............. 1066¸2 [42 00]
UNIT AND UNGROUNEED 6YFFACES, POWER EN12¥ S_{ ........ 914¸0 JR6 00]
dNIT AND BLOC_ 02 CONCRET£ WALLS AND OTRE2
GROUNEED SURFACES, POWER E_TRY SiEF ............ i0668 [4200i
REOUlRED CLEARANCE FOR OPERATION N_D SERVIClN6 _ILLIMETER6 _I_]
{VAP COiL ACCESS SiRE ............... 914¸0 [36 00_
POWER ENTRY SIDE 914 0 [3_ 00]
(EXCEPT FOR NEE 2_OU]RE_ENT6>
UNIT TOP ....................... 914¸0 [36 00]
SIDE OPPOSITE PUCTS 914 0 [36 00]
8_CT PANEL .............................................. 304¸8 [i200}_
_MINiMb_ _ISTARCESiF bNiT i6 PLACED LES2 TRAN 304 8 i12 OOi FRO_ WALL
6YSIEM,IHE_ 6¥STEN FERFOR_tA_CE MAYBE COMPROM]S£D
10907
[42 94]
IEL8 ENTRY
RERVICP PORTS_
44 22
LEFT SIDE VIEW
620 2
[24 42
44 3
[174}
fI 96j
[47 00]
17
{4 61]
J _ _ --
i Z
/
COMPRESSOR, BLOWER, GAS PARTI/,0N _
& E_£CTRICAL ACCESS PANEL
1226 3
[4820}
FRONT VIEW
1FiR 93]_
2629 [ 56R
466 _
[ g4
52_ _
[207
/42 2_
[5 60
FULL LOUVER
tA
i
'_L _66/2
347 3
R 68] ;
[13 83i
RIGHTSIDE VIEW REAR VIEW
Fig. 6 -48CE042-060 Unit Dimensions
AO6020

base ....
*Gasketing _
outer flange iir2
ge Woo oa,e)
Ra
/up0, JIl l?-f?Roofcurb*
]_ hsulatio!l(fMd
I Roofingmateial It
Roof Curb for Small Cabinet
Note A:When unit mounting screw is used
retainer bracket must also be used.
Roof Curb for Large Cabinet
Note A:When unit mounting screw is used
retainer bracket must also be used.
..................................................................... G
F
\R/A
\ -_" Gasket around
\ duct
\\
\\\\ /
S/A
/2
Insulated Gasket around
deck pan outer edge, \\\\,
UNIT SIZE ODS CATALOG NUMBER
CPRFCURB006A00
48CE024-036 CPRFCURB007A00
CPRFCURB008A00
48CE042-060 CPRFCURB009A00
NOTES:
I. Roof curb must be set up for unit being installed.
2. Seal strip must be applied, as required, to unit being installed,
3. Dimension in ( ) are in millimeters.
4. Roof curb is made of 16 gauge steel.
5. Table lists only the dimensions, per part nmnber, that have changed.
6. Attach ductwork to curb (flmlges of duct rest on curb).
7. Insulated panels: I in. thick fiberglass 1 lb. density,
8. Dimensions are in inches,
A
IN. (MM)
8 (203)
14 (356)
8 (203)
14 (356)
B
IN. (MM)
11 (279)
11 (279)
16-3/16 (411)
16-3/16 (411)
C
IN. (MM)
16-1/2 (419)
16-1/2 (419)
17-3/8 (441)
17-3/8 (441)
A05165
D
IN. (MM)
28-3/4 (730)
28-3/4 (730)
40 - 1/4 (t 022)
40 - 1/4 (1022)
9. When unit mounting screw is used (see Note A), a retainer bracket must be used as well. This bracket must also be used when required by code for hurricane or seismic
conditions. This bracket is available throtxgh Micrometl.
Fig. 7 - Roof Curb Dimensions

12
n
Y
4X
Fig. 8 - Corner Weights
#3
A0612g
CORNER WEIGHTS (SMALL CABINET)
Unit 024 030
Total Weight 362 362
Corner Weight 1 78 78
Corner Weight 2 78 78
Corner Weight 3 72 72
Corner Weight 4 134 134
036
384
79
89 "$ w
72 ,_
144
CORNER WEIGHTS (LARGE CABINET)
Unit 042 048
Total Weight 415 465
Corner Weight 1 91 103
Corner Weight 2 65 77
Corner Weight 3 111 123
Corner Weight 4 148 162
060
515
113
82
138
182
Step 6--Connect Condensate Drain
NOTE: When installing condensate drain connection be sure to
comply with local codes and restrictions.
Model 48CE disposes of condensate water through a 3/4 in. NPT
fitting which exits through the compressor access panel (See Fig. 5
and 6 for location).
Condensate water can be drained directly onto the roof in rooftop
installations (where permitted) or onto a gravel apron in ground
level installations. Install a field- supplied 2"condensate trap at end
of condensate connection to ensure proper drainage. Make sure that
the outlet of the trap is at least 1 in. lower than the drain-pan
condensate connection to prevent the pan from overflowing (See
Fig. 9). Prime the trap with water. When using a gravel apron, make
sure it slopes away from the unit.
Connect a drain tube - using a minimum of 3/4-in. PVC or 3/4-in.
copper pipe (all field-supplied) - at the outlet end of the 2-in. trap.
Do not undersize the tube. Pitch the drain tube downward at a slope
of at least l-in. for every 10 ft of horizontal run. Be sure to check
the drain tube for leaks.
1" (25mm) MIN.
--L TRAP
["----_,.,_ OUTLET ._
!ii!50mm) MIN"
C99013
Fig. 9 -Condensate Trap
Step 7--Install Flue Hood
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury
or death.
The venting system is designed to ensure proper venting. The
flue hood assembly mustbe installed as indicted in this section
of the unit installation instructions.
Install the flue hood as follows:
1. This installation must conform with local building codes and
with the National Fuel Gas (;ode (NFGC), ANSI Z223.1 (in
Canada, CAN/CGA B149.1, and B149.2) or NFPA
(National Fire Protection Association) 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. 11). Remove
the return duct cover to locate the flue hood. Place flue hood
assembly over flue panel. Orient screw holes in flue hood
with holes in the flue panel.
3. Secure flue hood to flue panel by inserting a single screw on
the right side and the left side of the hood.

UNIT SIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSORS
Quantity
REFRIGERANT (R-410A)
Quantity (lb.)
REFRIGERANT METERING DEVICE
CONDENSER COIL
Rows...Fins/in.
Face Area (sq ft)
CONDENSER FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq ft)
INDOOR BLOWER
Nominal Airflow (Cfm) Comfort
Efficiency
Max
Size (in.)
Motor HP (RPM)
FURNACE SECTION*
Burner Orifice No. (Qty.,.Drill Size)
Natural Gas
Burner Orifice No. (Qty...Drill Size)
Propane Gas
HIGH-- PRESSURE SWITCH (psig)
Cut--out
Reset (Auto)
LOSS-- OF - CHARGE /
LOW-- PRESSURE SWITCH
(Liquid Line) (psig)
Cut-out
Reset (auto)
RETURN-AIR FILTERS (in.)?
Throwaway
Contimmd next page.
024040 036090 042060 042090
2 3 3-1/2 3-1/2
382 364 415 415
Table 1--PhysicalData - Unit 48CE
024060 030040 030060
2 2-1/2 2-1/2
362 362 362
036060
3
384
Scroll
1
9.5
TXV
7.3 7.3 8.0 8.0 9.5 10.7 10.7
2...21 2...21 2...21 2...21 2...21 2...21 2...21 2...21
11.95 11.95 11.95 11.95 13.7 13.7 15.4 15.4
2700 2700 2700 2700 2800 2800 2800 2800
22 1/8 22 1/8 22 1/8 22 1/8 22 1/8 22 1/8 22 1/8 22 1/8
(825) (825) (825) (825) (825) (825) (825) (825)
3...t5 3...15 3...15 3...15 4...15 4...15 3...15 3...t5
3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7
700
800
10x10
1/2
Vadable based on Comfort Roll back (see User Interface instructions for more
7OO
8OO
10xt0
875
1000
10x10
1/2
875
1000
10x10
1/2
1050
1200
11x10
3/4
1050
1200
11x10
3/4
information).
1225
1400
1225
1400
11x10
3/4
11x10
3/4
2...44 2...38 2...44 2...38 2...38 3...38 2...38 2...38
2...50 2...46 2...50 2...46 2...46 3...46 2...46 2...46
65O +-15
42O +-25
2O +/-5
45 +/-10
20x24x1 20x24x1 20x24x1 20x24x1 24x30x1 24x30x1 24x36x1 24x36x1

UNITSIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSORS
Quantity
REFRIGERANT (R-410A)
Quantity (Ib,)
REFRIGERANT METERING DEVICE
CONDENSER FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
CONDENSER COiL
Rows...Fins/in,
Face Area (sq ft)
EVAPORATOR COIL
Rows...Fins/in,
Face Area (sq ft)
iNDOOR BLOWER
Nominal Airflow (Cfm) Comfort
Efficiency
Max
Size (In.)
Motor HP (RPM)
FURNACE SECTION*
Burner Orifice No. (Qty...Drill Size)
Natural Gas
Burner Orifice No. (Qty,..Drill Size)
Propane Gas
HIGH-PRESSURE SWITCH (psig)
Cut-out
Reset (Auto)
LOSS-OF-CHARGE /
LOW-PRESSURE SWITCH
(Liquid Line) (psig)
Cut-out
Reset (auto)
RETURN-AIR FILTERS (in,)f
Throwaway
Table l--Physical Data Can't - [;nit 48CE
048090 048115 048130 060090 060115 060130
444555
465 465 465 515 515 515
Scroll
1
11.25 11.25 11.25 13.5 13.5 13.5
TXV
3300 3300 3300 3300 3300 3300
22 22 22 22 22 22
1/4 (1100) 1/4 (1100) 1/4 (1100) 1/4 (1100) 1/4 (1100) 1/4 (1100)
2...21 2...21 2...21 2...21 2...21 2...21
17.4 17.4 17.4 19.3 19.3 19.3
4...15 4...15 4...15 4...17 4...17 4...17
4.7 4.7 4.7 5.7 5.7 5.7
Variable based on Comfort Roll back (see User Interface instructions for more information).
1400
1600
11x10
3/4
1400
1600
11x10
3/4
1400
1600
11x10
3/4
1750
2000
11x10
1
1750
2000
11x10
1
1750
2000
11x10
1
3...38 3...33 3...31 3...38 3...33 3...31
3...46 3...42 3...41 3...46 3...42 3...41
650 + -15
420 + -25
20 +/-5
45 +-10
24x36x1 24x36x1 24x36x1 24x36x1 24x36x1 24x36x1
'!Based on altittlde of 0 to 2000 ft.
Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration hlstimte) rated cooling airflow" or the heating airflow velocity of 300 fli
minute for throwaway type or 450 ft/minute for high capacity type. Air filter pressure drop for 11011 standard filters must not exceed 0.08 in. wg.
10

Table2--MaximumGas Flow Capacity*
NOMINAL INTERNAL
iRON PiPE DIAMETER LENGTH OF PiPE (FT)t
SIZE (iN.) (iN.)
10 20 30 40 50 60 70 80 90 100 125 150 175 200
1/2 .622 175 120 97 82 73 66 61 57 53 50 44 40
3/4 .824 360 250 200 170 151 138 125 118 110 103 93 84 77 72
1 1.049 680 465 375 320 285 260 240 220 205 195 175 160 145 135
1-1/4 1.380 1400 950 770 600 580 530 490 460 430 400 360 325 300 280
1-1/2 1.610 2100 1460 1180 990 900 810 750 690 650 620 550 500 460 430
Capacity of pipe in eu fl of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 0.5 in. wg (based oll a 0.60 specific gravity gas). Refer to Table. National Fire Protec
tion Association NFPA 54.
This length includes an ordinary number of fittings.
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 1/2-in. FPT
gas inlet on the 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. wg maximum pressure drop. Never use
pipe smaller than the 1/2-in. FPT gas inlet on the unit gas valve.
For natural gas applications, the gas pressure at unit gas connection
nmst not be less than 4.0 in. wg or greater than 13 in. wg while the
unit is operating. For propane applications, the gas pressure nmst
not be less than 7.0 in. wg or greater than 13 in. wg at the unit
connection.
A 1/8-in. NPT plugged tapping, accessible for test gauge
connection, must be installed immediately upstream of the gas
supply connection to the gas valve.
When installing the gas supply line, observe local codes pertaining
to gas pipe installations. Refer to the NFGC ANSI Z223.1-2005
NFPA latest edition (in Canada, CAN/CGA B 149.1). In the absence
of local building codes, adhere to the following pertinent
recommendations:
1. Avoid low spots in long runs of pipe. Grade all pipe 1/4 in.
for every 15 ft of length to prevent traps. Grade all horizontal
runs downward to risers. Use risers to connect to heating
section and to meter.
2. Protect all segments of piping system against physical and
thermal damage. Support all piping with appropriate straps,
hangers, etc. Use a minimum of one hanger eve_ 6 ft. For
pipe sizes larger than 1/2 in., follow recommendations of
national codes.
3. Apply joint compound (pipe dope) sparingly and only to
male threads of joint when making 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.
4. Install sediment trap in riser leading to heating section (See
Fig. 10). This drip leg functions as a trap for dirt and
condensate.
5. Install an accessible, external, manual main shutoff valve in
gas supply pipe within 6 ft 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.
IN
TEE
Fig. 10 -Sediment Trap C99020
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.
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in fire, explosion,
personal injury, 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.
-Use proper length of pipe to avoid stress on gas control
manifold.
-If a flexible connector is required or allowed by authority
having jurisdiction, black iron pipe shall be installed at furnace
gas valve and extend aminimunr of 2 in. outside furnace casing.
-If codes allow a flexible connector, always use a new
connector, do not use a connector which has previously
serviced another gas appliance.
n
11

n
8. Check for gas leaks at the field-installed and
factory-installed 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
dnctwork connects to the roof curb (See Fig. 5 and 6for connection
sizes and locations).
CONFIGURING UNITS FOR DOWNFLOW (VERTICAL)
DISCHARGE
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before installing or servicing system, always turn off main
power to system. There may be more than one disconnect
switch.
1. Open all electrical disconnects before starting any service
work.
2. Remove horizontal (metal) duct covers to access vertical
(down flow) discharge duct knockouts in unit base.
3. Use a screwdriver and hammer to remove the panels in the
bottom of the unit base (See Fig. 11).
4. If unit ductwork is to be attached to vertical opening flanges
on the unit base (iackstand applications only), do so at this
time.
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in property damage.
Collect ALL screws that were removed. Do not leave screws
on rooftop as permanent damage to the roof may occur.
5. It is reconmmnded that the base insulation around the
perimeter of the vertical return-air opening be secured to the
base with aluminum tape. Applicable local codes may
require aluminum tape to prevent exposed fiberglass.
6. Cover both horizontal duct openings with the provided duct
covers. Ensure opening is air- and watertight.
7. After completing unit conversion, perform all safety checks
and power up unit.
NOTE: The design and installation of the duct system must be in
accordance with the standards of the NFPA for installation of
nonresidence-type air conditioning and ventilating systems. NFPA
90A or residence-type, NFPA 90B; and/or local codes and
ordinances.
Adhere to the following criteria when selecting, sizing, and
installing the duct system:
1. Units are shipped for horizontal duct installation (by
removing duct covers).
2. Select and size ductwork, supply-air registers, and
return-air grilles according to American Society of Heating,
Refrigeration and Air Conditioning Engineers (ASHRAE)
recommendations.
Duct Covers
Fig. 11 -48CE with Duct Covers On
A05301
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 gaskets to en-
sure weather-tight and airtight seal.
4. All units must have field-supplied filters or accessory filter
rack installed in the return-air side of the unit.
Recommended sizes for filters are shown in Table 1.
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) minimum installation standards for
heating and air conditioning systems. Secure all ducts to
building structure.
7. Flash. weatherproof, and vibration isolate all openings in
building structure in accordance with local codes and good
building practices.
Step 10--Install Electrical Connections
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
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, ANSI/NFPA American
National Standards Institute/National Fire Protection
Association (latest edition) (in Canada, Canadian Electrical
Code CSA (;22.1) and local electrical codes.
12

UNITCOMPONENTDAMAGEHAZARD
Failuretofollowthiscautioncouldresultindamagetotheunit
beinginstalled.
1.MakeallelectricalconnectionsinaccordancewithNEC
ANSI/NFPA(latestedition)andlocalelectricalcodes
governingsuchwiring.In Canada,all electrical
connectionsmustbeinaccordancewithCSAstandard
C22.1CanadianElectrical(;odePart1andapplicablelocal
codes.Refertounitwiringdiagram.
2.Useonlycopperconductorforconnectionsbetween
field-suppliedelectricaldisconnectswitchandunit.DO
NOTUSEALUMINUMWIRE.
3.Besurethathigh-voltagepowertounitiswithinoperating
voltagerangeindicatedonunitratingplate.On3-phase
units,ensurephasesarebalancedwithin2percent.Consult
localpowercompanyforcorrectionofimpropervoltage
and/orphaseimbalance.
4.Insulatelow-voltagewiresforhighestvoltagecontained
withinconduitwhenlow-voltagecontrolwiresareinsame
conduitashigh-voltagewires.
5.Donotdamageinternalcomponentswhendrillingthrough
anypaneltomountelectricalhardware,conduit,etc.
Seeunitwiringlabel16or17andFig.12forreferencewhenmaking
highvoltageandUserInterfacecontrolconnections.
TRANSFORMERPROTECTION
Thetransformerisoftheenergy-limitingtype.Itissettowithstand
a30-sec.overloadorshortedsecondarycondition.
HIGH-VOLTAGECONNECTIONS
Whenroutingpowerleadsintounit,useonlycopperwirebetween
disconnectandunit.Thehighvoltageleadsshouldbeinaconduit
untiltheyentertheductpanel;conduitterminationattheductpanel
mustbewatertight.
Theunitmusthavea separateelectricalservicewitha
field-supplied,waterproofdisconnectswitchmountedat.orwithin
sightfrom,theunit.Refertotheunitratingplate.NECandlocal
codesformaximumfuse/circuitbreakersizeandminimumcircuit
amps(ampacity)forwiresizing(SeeTable3forelectricaldata).
Thefield-supplieddisconnectswitchboxmaybemountedonthe
unitoverthehigh-voltageinletholewhenthestandardpowerand
low-voltageentrypointsareused(SeeFig.5and6foracceptable
location).
Proceedasfollowstocompletethehighvoltagecnnnectionstothe
unit.
User Interface
._.-
Outdoor Air Thermistor
HUMIDIFIER
(24 VAC)
LEGEND
Factory Wiring
Field Wiring ......
Infinity
Control Board
OAT
HUM
W2
Y1
HUM
G
?,OM
r/W1
'/Y2
R
Fig. 12 -Control-Voltage Connections
A06038
Single phase units:
1. Run the high-voltage (L1, L2) and ground lead into the
control box.
2. Connect ground lead to chassis ground connection.
3. Locate the black and yellow wires connected to the line side
of the contactor.
4. Connect field L1 to black wire on connection 11 of the
compressor contactor.
5. Connect field wire L2 to yellow wire on connection 23 of the
compressor contactor.
Three-phase units:
1. Run the high-voltage (L1, L2, L3) and ground lead into the
control box.
2. Connect ground lead to chassis ground connection.
3. Locate the black and yellow wires connected to the line side
of the contactor.
4. Connect field L1 to black wire on connection 11 of the
compressor contactor.
5. Connect field wire L2 to yellow wire on connection 13 ofthe
compressor contactor.
6. Connect field wire L3 to blue wire from compressor.
13

UNIT V-PH-HZ
SIZE
024 208/230 1 60
030 208/230 1 60
208/230 1 60
036 208/230_3 60
208/230 1 60
042 208/230_3 60
208/230 1 60
048 208/230_3 60
208/230 1 60
060 208/230_3 60
VOLTAGE
RANGE
Min Max
187 253
187 253
187 253
187 253
187 253
187 253
187 253
187 253
187 253
187 253
Table 3--Electrical Data - Unit 48CE
OUTDOOR
COMPRESSOR FAN MOTOR
FLA
0.8
0.8
0.8
0.8
0.8
0.8
1.6
1.6
1.6
1.6
INDOOR FAN
MOTOR POWER SUPPLY
MCARLA LRA
13.5 61.0
15.9 73.0
16.9 83.0
12.2 77.0
22.4 105.0
15.4 88.0
21.3 109.0
14.7 91.0
27.0 145.0
19.2 137.0
FLA
4.3
4.3
6.8
6.8
6.8
6.8
6.8
6.8
9.1
9.1
22.0/22.0
25.0/25.0
28.7/28.7
22.9/22.9
35.6/35.6
26.9/26.9
35.0/35.0
26.8/26.8
44.5/44.5
33.3/33.3
MAX FUSE
OR CKT BKR
30/30
30/30
35/35
30/30
45/45
35/35
45/45
35/35
60/60
40/40
LEGENO @US
FLA -- Full Load Amps
LRA -- Locked Rotor Amps
MCA -- MinimumCircuitAmps
M©CP -- Maximum Overcurrent Protection
RLA -- Rated Load Amps
NOTES:
1. In compliance with NEC (National Electrical Code) requirements
for multimotor and combination load equipment (refer to NEC
Articles 430 and 440), the overcurrent protective device for the
unit shall be Power Supply fuse. The CGA (Canadian Gas
Association) units may be fuse or circuit breaker
2. Minimum wire size is based on 60 C copper wire. Ifother than
60 Cwire is used, or if length exceeds wire length in table,
determine size from NEC.
3. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply volt-
age is greater than 2%. Use the following formula to determine
the percentage of voltage imbalance
% Voltage imbalance
= 100 x max voltage deviation from average voltage
average voltage
Heater capacity (kW) based on heater voltage of 208v & 240v.
* If power distibution voltage to unit varies from rated heater
voltage, heater kW will vary accordingly.
EXAMPLE: Supply voltage is 230-3-60.
A B C AB = 228 v
BC = 231 v
AC = 227 v
Average Voltage = 228 + 231 + 227
3
= 68._6
3
=229
Determine maximum deviation from average voltage.
AB) 229-228 = lv
BC) 231 - 229 2 v
(AC) 229- 227 = 2 v
Maximum deviation is 2 v.
Determine percent of voltage imbalance
2
% Voltage Imbalance = 100 x --
229
= 0.8%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is
more than 2%, contact your local electric utility company
immediately.
C03014
Fig. 13 - Electrical Data Legend
SPECIAL PROCEDURES FOR 208-V OPERATION
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Make sure that the po``ver 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 200. This retaps transformer
to primary voltage of 208 vac.
ELECTRICAL SHOCK HAZARD
Failure to follow this ``yarning could result in personal injury
or death.
Before making any wiring changes, make sm'e the gas supply
is switched off first. Tken switch off the po``ver supply to the
unit and install lockout tag.
Make lo``v voltage connections to 18 gauge ,,vires located in the
splice box.
CONTROL VOLTAGE CONNECTIONS
Use only Infinity User Interface for unit control. (For detailed
instructions for the low voltage connections, see the User Interface
installation guide.)
Remove knockout hole located in the heat section panel adjacent to
the service access panel. Remove the robber grommet from the
installer's packet and install grommet in the knockout opening.
Provide a drip loop before running wire through panel. Run the
low-voltage leads from the UI. through the inlet hole. and into unit
lo,,v-voltage splice box. Make low-voltage connections to
18-gauge ,,vires located in the splice box (See Fig. 12). Secure all
cut ,,vires, so that they do not interfere with operation of unit.
Step ll--Optional Accessories
OUTDOOR AIR THERMISTOR (OAT)
A2-screw terminal strip is provided for connection of an outdoor
temperature thermistor. This strip is marked OAT. The installation
of an outdoor temperature sensor using the Infinity control board
OAT terminals is optional.
OAT input is used to supply outdoor temperature data for system
level functions and for temperature display on User Interface.
Using two wires of field supplied thermostat wire cable, wire one
lead of thermistor to one screw terminal and the other lead to
remaining screw terminal: there is no polarity to be observed. It is
strongly recommended that two ,,vires be used to connect the
14

thermistortoeliminatenoiseinterferenceintemperaturereading.If
therearenottwosparewiresavailableincable,onewiremaybe
usedtoconnectthermistortoOATscrewterminal1andtheother
leadofthethermistorcanbewiredto24vacCOM(C)wire.OAT
screwterminal1isthetopterminalmarkedwithasmallnunaber1
nexttotheterminalstrip.
_o o
Fig. 14 - HK42FZ021
A06026
HUMIDIFIER CONNECTIONS
The Infinity control board terminal marked HUM is provided for
low voltage (24 vac) control of a humidifier. No humidistat is
required as User Interface monitors indoor humidity. When
commanded to operate humidifier, the unit control will energize the
HUM output to turn humidifier on and de-energize HUM output to
turn humidifier off. Wire HUM and C terminals directly to
humidifier as shown in Fig. 12.
ELECTRONIC AIR CLEANER
Electronic Air Cleaner terminals are provided on the Infinity
Control Board (EAC- 1 and EAC-2). While these terminals can be
used to power a 230V EAC, it is recommended that any EAC be
installed per the EACs installation instructions and connected
separately to a standard 115V or 230V outlet with an airflow sensor
to control operation of the EAC.
PRE- START- UP
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
1. Follow recognized safety practices and wear protective
goggles when checking or servicing refrigerant system.
2. Do not operate compressor or provide any electric power
to unit unless compressor terminal cover is in place and
secured.
3. Do not remove compressor terminal cover until all
electrical sources are disconnected and tagged.
4. Relieve and recover all refrigerant from system before
touching or disturbing anything inside terminal box if
refrigerant leak is suspected around compressor terminals.
5. Never attempt to repair soldered connection while
refrigerant system is under pressure.
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.
Use the Start-Up Checklist supplied at the end of this book and
proceed as follows to inspect and prepare the unit for initial start-up:
1. Remove access panel.
2. Read and follow instructions on all DANGER, WARNING.
CAUTION, and INFORMATION labels attached to. or
shipped with unit.
3. Make the following inspections:
a. Inspect for shipping and handling damage, 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.
c. Leak-test all refrigerant tubing connections using
electronic leak detector, or liquid-soap solution. If a
refrigerant leak is detected, see following Check for
Refrigerant Leaks section.
d. Inspect all field- and factory-wiring connections. Be
sure that connections are completed and tight.
e. Ensure wires do not touch refrigerant tubing or sharp
sheet metal edges.
f. Inspect coil fins. If damaged during shipping and
handling, carefully straighten fins with a fin comb.
n
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal inju W,
death or property damage.
Do not purge gas supply into the combustion chamber. Do not
use a match or other open flame to check for gas leaks.
15

n
4. Verify the following conditions:
a. Make sure gas line is free of air. Before lighting the unit
for the first time, perform the following with the gas valve
in the OFF position:
NOTE: If the gas supply pipe was not purged before connecting the
unit. it will be full of air. It is reconmmnded that the ground joint
union be loosened, and the supply line be allowed to purge until the
odor of gas is detected. Never purge gas lines into a combustion
chamber. Immediately upon detection of gas odor, retighten the
union. Allow 5 minutes to elapse, then light unit.
b. Make sure that condenser-fan blade is correctly
positioned in fan orifice. Top 1/3 of condenser-fan blade
should be within fan orifice venturi.
c. Ensure fan hub is positioned correctly with respect to
motor housing (See Fig. 15).
d. Make sure that air filter(s) is in place.
e. Make sure that condensate drain trap is filled with water
to ensure proper drainage.
f. Make sure that all tools and miscellaneous loose parts
have been removed.
5. Compressors are internally spring mounted. Do not loosen
or remove compressor holddown bolts.
6. Each unit system has two Schrader-type ports, one low-side
Schrader fitting located on the suction line, and one high
Schrader fitting located on the compressor discharge line. Be
sure that caps on the ports are tight.
A "
Infinity Top
UNIT SIZE
024
030
036
042
048
060
"A" DIMENSION
Infinity
25
25
24
24
24
19
Fig. 15 - Fan Blade Clearance
A06035
START-UP AND TROUBLESHOOTING
Step 1--Check for Refrigerant Leaks
Proceed as follows to locate and repair a refrigerant leak and to
charge the unit:
1. Locate leak and make sure that refrigerant system pressure
has been relieved and reclaimed from both high- and
low-pressure ports.
2. Repair leak following Refrigerant Service procedures.
NOTE: Install a filter drier whenever the system has been opened
for repair.
3. Add a small charge of R-410A refrigerant vapor to system
and leak test unit.
4. Evacuate and recover refrigerant from refrigerant system if
additional leaks are not found.
5. Charge unit with R-410A refrigerant, using a volumetric
charging cylinder or accurate scale. Refer to unit rating plate
for required charge. Be sure to add extra refrigerant to
compensate for internal volume of filter drier.
Step 2--Unit Start-Up
NOTE: Always check high- and low-voltage supply to the unit
components. Check the integrity of the plug receptacle connections
and unit wiring harness prior to assnnaing a component failure.
LED DESCRIPTION
LEDs built into Infinity" Control Board provide installer or service
person information concerning operation and/or fault condition of
the unit control and ECM motor. This information is also available
at the system User Interface in text with basic troubleshooting
instructions. Careful use of information displayed will reduce the
need for extensive manual troubleshooting.
The amber LED located at upper right side of control adjacent to
fuse is the system status LED and it is labeled STATUS. The green
LED labeled COMM is located adjacent to the STATUS LED, and
is used as an indicator of system communications status. Status
Codes will be displayed on the STATUS LED using the following
protocol:
1. The number of short flashes indicates first digit of code.
2. The number of long flashes indicates second digit of code.
3. A short flash is 0.25 seconds on. A long flash is 1 second on.
4. The time between flashes is 0.25 seconds.
5. The time between last short flash and first long flash is 1
second.
6. The LED will be off for 2.5 seconds before repeating code.
CONTROL START-UP AND SYSTEM COMMUNICATIONS
TROUBLESHOOTING
On power up, green COMM LED will be turned off until successful
system communications are established (this should happen within
10 seconds). Once communications with User Interface are
successful, COMM LED will be lit and held on. At the same time.
amber STATUS LED will be lit and held continuously on until a
request for operating mode is received. The STATUS LED will be
on any time unit is in idle mode.
If, at any time. communications are not successful for a period
exceeding 2 minutes, the Infinity control will only allow heating or
cooling operation using a common thermostat connected to the
standard 24V thermostat terminal strip connections and will display
Status (;ode 16. System Communication Fault, on amber STATUS
LED. No further troubleshooting information will be available at
User Interface until communications are re-established.
If COMM LED does not light within proper time period and status
code is not displayed:
1. Check system transformer high- and low-voltage to be sure
the system is powered.
2. Check fuse on control board to be sure it is not blown. If fuse
is open, check system wiring before replacing it to be sure a
short does not cause a failure of replacement fuse.
If COMM LED does not light within proper time period and status
code is displayed:
1. Check system wiring to be sure User Interface is powered
and connections are made A to A. B to B, etc. and wiring is
not shorted. Mis-wiring or shorting of the ABCD
communications wiring will not allow successful
communications.
NOTE: Shorting or mis-wiring low-voltage system wiring will not
cause damage to unit control or user interface but may cause low
voltage fuse to open.
16

HEATING INPUT
(BTUH)* NUMBER OF
ORIFICES
40,000 2
60,000 2
90,000 3
115,000 3
130,000 3
Min
4.0
4.0
4.0
4.0
4.0
Table 4_Heatlng Inputs
GAS SUPPLY PRESSURE (IN. WG)
Natural Max
13.0
13.0
13.0
13.0
13.0
Propanet
Min
4.0
4.0
4.0
4.0
4.0
Max
13.0
13.0
13.0
13.0
13.0
MANIFOLD PRESSURE (IN. WG)
Natural
3.5
3.5
3.5
3.5
3.5
Propanet
3.5
3.5
3.4
3.7
3.5
"When a unit is converted to propane, different size orifices must be used. See separate, natural to propane conversion kit instructions.
}Based on altitudes fronl sea level to 2000 ft above sea level. For altitudes above 2000 ft, reduce input rating 4 percent for each additional 1000 ft above sea level, In Canada.
from 2000 ft above sea level to 4500 ft above sea level, derate the unit 10 percent.
ECM MOTOR TROUBLESHOOTING
The ECM motor used in this product consists of two parts: the
control module and the motor winding section. Do not assume
motor or module is defective if it will not start. Use the designed-in
LED information aids and follow troubleshooting steps described
below before replacing motor control module or entire motor.
Motor control module is available as a replacement part.
VERIFY MOTOR WINDING SECTION
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
After disconnecting power from the ECM motor, wait at least
5 minutes before removing the control section. Internal
capacitors require time to discharge.
Before proceeding to replace a motor control module:
1. Check motor winding section to be sure it is functional.
2. Remove motor control module section and unplug winding
plug. Motor shaft should turn freely, resistance between any
two motor leads should be similar and resistance between
any motor lead and unpainted motor end should exceed
100,000 ohms.
3. Failing any of these tests, entire ECM motor must be
replaced.
4. Passing all of the tests, motor control module alone can be
replaced.
MOTOR TURNS SLOWLY
1. Low static pressure loading of blower while access panel is
removed will cause blower to run slowly. Particularly atlow
airflow requests. This is normal, do not assume a fault exists.
2. Recheck airflow and system static pressure using User
Interface service screens with access panel in place.
NOTE: Blower motor faults ,,vill not cause a lockout of blower
operation. The unit control will attempt to run the blower motor as
long as User Interface maintains a demand for airflow. The unit
control will not operate electric heaters while a fault condition
exists. The unit control communicates with the motor at least once
every five seconds, even when themotor is idle. If, during operation,
the unit control does not communicate with the motor for more than
25 seconds, the motor will shut itself down and wait for
communication to be re-established.
Step 3--Sequence of Operation
NOTE: Infinity control must be grounded for proper operation or
control will lock out.
NOTE: If a power interruption occurs during a call for heat. the
control will start a 90- second blower-only ON period two seconds
after power is restored, if the User Interface is still calling for gas
heating. The amber LED light will flash code 12 during the
90- second period, after which the LED will be ON continuously, as
long as no faults are detected. After the 90-second period, the unit
will respond to the User Interface normally.
GAS HEAT MODE AND ADJUSTMENTS
When the User Interface calls for heat, the Infinity control board
performs a self-check, verifies the pressure switch contact is open,
and starts the inducer.
1. Inducer Prepurge Period: When the inducer motor comes up
to speed, the pressure switch closes, and the Infinity control
CPU begins a 15-second prepurge period. If the pressure
switch fails to remain closed, the inducer motor will remain
running. After the pressure switch re-closes, the Infinity
control CPU will begin a 15-second prepurge period and
continue to run the inducer motor.
2. Trial-For-Ignition Sequence: The spark igniter will spark
for 3 seconds. The main gas valve relay contact closes to
energize the gas valve. After 5 seconds, the igniter is
de-energized and a 2-second Flame-Proving period begins.
3. Flame-Proving-When the burner flame is proved at the
flame-proving sensor, the control begins the blower-ON
delay period and continues to hold the gas valve open. If the
burner flame is not proved within two seconds, the control
will close the gas valve and repeat the ignition sequence for
up to three more Trials-For-Ignition before going to
Ignition-Lockout. Lockout will be reset automatically after
three hours, by momentarily interrupting 230 vac power to
the. or by interrupting 24 vac power at SEC1 or SEC2 to the
control board.
If flame is proved when there should be no flame present.
control will lock out of Gas-Heating mode and operate the
inducer motor until flame is no longer proved.
Blower- On Delay - If the burner flame is proven. 30 seconds
after the gas valve is opened the Indoor Blower is turned ON.
Simultaneously, the humidifer terminal HUM and electronic
air cleaner terminal EAC-1 are energized and remain
energized throughout the heating cycle.
NOTE: EAC-2 terminal is common with L2 and will have
115v-to-ground when unit is powered.
5. Blower-Off Delay-When the call for heat is satisfied, the R
to W circuit is opened, de-energizing the gas valve, stopping
gas flow to the burners, and de-energizing the HUM termi-
nal. The inducer motor will remain energized for a 4-second
post-purge period. The indoor blower motor and air cleaner
terminal EAC-1 will remain energized for 90. 120, 150, or
180 seconds (depending on selection of blower-OFF delay).
The control is factory-set for 120-second blower-OFF
delay.
CHECK GAS INPUT
Check gas input and manifold pressure after unit start-up (See Table
4). If adjustment is required proceed as follows:
n
17

1.TheratedgasinputsshowninTable4areforaltitudesfrom
sealevelto2000ftabovesealevel.Theseinputsarebased
onnaturalgaswithaheatingvalueof1050Btu/ft3at0.65
specificgravity,orpropanegaswithaheatingvalueof2500
Btu/ft3at1.5specificgravity.
2.Forelevationsabove2000ft,reduceinput4percentforeach
1000ftabovesealevel.Forexampleat2001ft.a12%total
derateisrequired.
3.Whenthegassupplybeingusedhasadifferentheatingvalue
orspecificgravity,refertonationalandlocalcodes,or
contactyourdistributortodeterminetherequiredorifice
size.
Ifthedesiredgasinputis115,000Btuh,onlyaminorchangeinthe
manifoldpressureisrequired.
Observemanifoldpressureandproceedasfollowstoadjustgas
input:
1.Removecoverscrewoverregulatoradjustmentscrewongas
valve.
2.Turnregulatoradjustmentscrewclockwisetoincreasegas
input,orturnregulatoradjustmentscrewcounterclockwise
todecreaseinput.Manifoldpressuremustbebetween3.4
and3.6in.wg.Unsafeoperationoftheunitmayresultif
manifoldpressureisoutsidethisrange.Personalinjuryor
unitdamagemayresult.
UNITDAMAGEHAZARD
Failuretofollowthiscautionmayresultin component
damageduetoflameimpingementofburnersandheat
exchangers.
Do Notredrillan orifice.Improperdrilling(burrs,
out-of-roundholes,etc.)cancauseexcessiveburnernoise
andmisdirectionofburnerflame.If orificeholeappears
damagedoritissuspectedtohavebeenredrilled,checkorifice
holewithanumbereddrillbitofcorrectsize.
ADJUSTGASINPUT
Thegasinputtotheunitisdeterminedbymeasuringthegasflow
atthemeterorbymeasuringthemanifoldpressure.Measuringthe
gasflowatthemeterisrecommendedfornaturalgasunits.The
manifoldpressuremustbemeasuredtodeternainetheinputof
propanegasunits.
Measure Gas Flow (Natural Gas Units)
Minor adjustment to the gas flow can be made by changing the
manifold pressure. The manifold pressure must be maintained
between 3.4 and 3.6 in. wg.
If larger adjustments are required, change main burner orifices
following the recommendations of national and local codes.
NOTE: All other appliances that use the same meter must be turned
off when gas flow is measured at the meter.
Proceed as follows:
1. Turn off gas supply to unit.
2. Remove pipe plug on manifold (See Fig. 16) and connect
manometer. Turn on gas supply to unit.
3. Record number of seconds for gas meter test dial to make one
revolution.
4. Divide number of seconds in Step 3 into 3600 (number of
seconds in one hour).
5. Multiply result of Step 4 by the number of cuft shown for
one revolution of test dial to obtain cu ft of gas flow per hour.
6. Multiply result of Step 5 by Btu heating value of gas to
obtain total measured input in Btuh. Compare this value with
heating input shown in Table 4 (Consult the local gas
supplier if the heating value of gas is not known).
EXAMPLE: Assume that the size of test dial is 1 cu ft, one
revolution takes 32 sec., and the heating value of the gas is 1050
Btu/ft3. Proceed as follows:
1. 32 sec. to complete one revolution.
2. 3600 + 32 = 112.5.
3. 112.5 x 1 =112.5 ft3 of gas flow/hr.
4. 112.5 x 1050 = 118.125 Btuh input.
FIRE AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury
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 Pressure (Propane Units)
The main burner orifices on a propane gas unit are sized for the unit
rated input when the manifold pressure reading matches the level
specified in Table 4.
Proceed as follows to adjust gas input on a propane gas unit:
1. Turn off gas to unit.
2. Remove pipe plug on manifold and connect manometer (See
Fig. 16).
3. Turn on gas to unit.
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 4. Turn adjusting screw
clock,vise 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 (See Fig. 17). Refer
to the Maintenance section for information on burner removal.
AIRFLOW 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 5 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.
18

MANIFOLD PIPE PLUG
Fig. 16 -Burner Assembly
C99019
on cooling airflow specified by the User Interface. The electronic air
cleaner terminal EAC- 1 is energized when the indoor blower motor
is operating.
When the "call for cooling" is satisfied, the R-to-Y circuit is
opened. The compressor and fan will stop, and the indoor blower
motor will continue operating at cooling airflow for an additional 90
seconds.
CHECKING AND ADJUSTING REFRIGERANT CHARGE
The refrigerant system is fully charged with R-410A refrigerant,
tested, and factory-sealed.
NOTE: Adjustment of the refrigerant charge is not required unless
the unit is suspected of not having the proper charge.
A subcooling charging chart is attached to the outside of the service
access panel. The chart includes the required liquid line temperature
at given discharge line pressures and outdoor ambient temperatures.
An accurate subcooling, thermocouple- or 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 because they are not
adequate for this type of measurement.
BURNER FLAME
Fig. 17 -Monoport Burner
C99021
LIMIT SWITCHES
Normally closed limit switch (LS) completes the control circuit.
Should the leaving-air temperature rise above the maximum
allowable temperature, the limit switch opens and the control circuit
"breaks." Any interruption in the control circuit instantly doses 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 control circuit. The direct-spark ignition system
cycles and the unit returns to normal heating operation.
ROLLOUT SWITCH
The function of the rollout 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 rollout switch reaches the
maximum allowable temperature, the 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.
COOLING MODE
The Infinity Control Board closes the R-to-Y circuit which starts
the compressor and outdoor fan and starts the indoor blower motor
UNIT DAMAGE 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.
Proceed as follows:
1. Remove caps from low- and high-pressure service fittings.
2. Using hoses with valve core depressors, attach low- and
high-pressure gauge hoses to low- and high-pressure
service fittings, respectively.
3. Start unit in Cooling mode and let unit run until system
pressures stabilize.
4. Measure and record the following:
a. Outdoor ambient-air temperature (°F db).
b. Liquid line temperature (°F).
c. Discharge (high-side) pressure (psig).
5. Using "Cooling Charging (;harts," compare outdoor-air
temperature(°F rib) with the discharge line pressure (psig) to
determine desired system operating liquid line temperature
(See Fig. 18).
6. Compare actual liquid line temperature with desired liquid
line temperature. Using a tolerance of -+2°F, add refrigerant
if actual temperature is more than 2°F higher than proper
liquid line temperature, or remove refrigerant if actual
temperature is more than 2°F lower than required liquid line
temperature.
NOTE: If the problem causing the inaccurate readings is a
refrigerant leak, refer to the Check for Refrigerant Leaks section.
DEHUMIDIFICATION MODE
This Infinity system can be used to dehumidify the living space. See
User Interface Installation Instructions for more details.
19

Required Subcooling oF (oD) Required Liquid Line Temperature for a Specific Subcooling (R-410A)
Outdoor Ambient Temperature Required Subcooling (°F) Required Subcooling (°C)
Model Size 75 (24) 82 (28) 85 (29) 95 (35) 105 (41 }
024 10.3 ( 5.7 )9.8(5.4) 9.4 ( 5.2 )9(5) 8.6 ( 4.7 t
030 9.3(5.2) 8.8 ( 4.9 } 8.61 4.8 ) 7.8(4.3) 7(3.9)
036 17.6 ( 9.8 )16.8 (9.3 } 16.5 ( 9.2 )15.4 ( 8.6 } 14.3 (7.9 )
042 12.8(7.1) 12.7(7.1) 12.7(7.1) 12.6 (7} 12.6(7)
048 17.5(9.7) 16.9(9.4) 16.6(9.2) 15.7(8.7) 14.8(8.2)
060 13.7(7.6! 1317.2_ 13!7.2! 14.5(8.1) 11.516.4)
Charqinq Procedure
I- Measure Discharge line pressure by attaching a gauge to the service port.
2- Measure the Liquid line temperature by attaching a temperature sensing
device to it.
3- Insulate the temperature sensing device so that the Outdoor Ambient
doesn't affect the reading.
4- Refer to the required Subcooling in the table based on the model size and
the Outdoor Ambient temperature.
5- Interpolate if the Outdoor ambient temperature lies in between the table
values. Extrapolate if the temperature lies beyond the table range.
8- Find the Pressure Value in the table corresponding to the the measured
Pressure of the Compressor Discharge line.
7- Read across from the Pressure reading to obtain the Liquid line
temperature for a required Subcooling
B- Add Charge if the measured temperature is higher than the table value.
_ressure Pressu_
(psig) 5 10 15 20 25 (kPa) 368
189 61 56 51 46 41 1303 16 13 11
196 63 58 53 48 43 1351 17 15 12
203 66 61 56 51 46 1399 19 16 13
210 68 63 58 53 48 1448 20 17 14
217 70 65 60 55 50 1496 21 18 15
224 72 67 62 57 52 1544 22 19 16
231 74 69 64 59 54 1593 23 20 18
238 76 71 66 61 56 1641 24 21 19
245 77 72 67 62 57 1689 25 22 20
252 79 74 69 64 59 1737 26 23 21
260 81 76 71 66 61 1792 27 25 22
268 83 78 73 68 63 1848 29 26 23
276 85 80 75 70 65 1903 30 27 24
284 87 82 77 72 67 1958 31 28 25
292 89 84 79 74 69 2013 32 29 26
300 91 86 81 76 71 2068 33 30 27
309 93 88 83 78 73 2130 34 31 28
318 95 90 85 80 75 2192 35 32 29
327 97 92 87 82 77 2254 36 33 31
336 99 94 89 84 79 2316 37 34 32
345 101 96 91 86 81 2378 38 35 33
354 103 98 93 88 83 2440 39 36 34
364 105 100 95 90 85 2509 40 38 35
374 107 102 97 92 87 2578 41 39 36
384 108 103 98 93 88 2647 42 40 37
394 110 105 100 95 90 2716 44 41 38
404 112 107 102 97 92 2785 45 42 39
414 114 109 104 99 94 2854 46 43 40
424 116 111 106 101 96 2923 47 44 41
434 118 113 108 103 98 2992 48 45 42
444 119 114 109 104 99 3061 48 46 43
454 121 116 111 106 101 3130 49 47 44
464 123 118 113 108 103 3199 50 48 45
474 124 119 114 109 104 3268 51 48 46
484 126 121 116 111 106 3337 52 49 47
494 127 122 117 112 107 3406 53 50 47
504 129 124 119 114 109 3475 54 51 48
514 131 126 121 116 111 3544 55 52 49
524 132 127 122 117 112 3612 56 53 50
534 134 129 124 119 114 3681 56 54 51
11
8
9
10
11
13
14
15
16
17
18
19
2o
21
22
23
24
26
27
28
29
3o
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
46
47
48
Fig. 18 - Cooling Charging Table-Subcooling
14
5
6
8
9
10
11
12
13
14
15
16
17
19
2O
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
45
C03027
CONTINUOUS FAN MODE
When continuous fan operation is requested by the User Interface
indoor blower motor will operate at continuous blower airflow.
Continuous fan operation is programmable. See the User Interface
Owner's Manual for detailed instructions. Terminal EAC-1 is
energized as long as the indoor blower motor is energized.
During a call for heat, the Infinity control will transition the indoor
blower motor to continuous blower airflow or heat airflow,
whichever is lowest. The indoor blower motor will remain ON until
the burners ignite then shut OFF and remain OFF for the
blower-ON delay allowing the heat exchangers to heat up more
quickly, then restarts at the end of the blower-ON delay period.
The indoor blower motor will revert to continuous-blower airflow
after the heating cycle is completed.
When the UI "calls for cooling", the indoor blower motor will
switch to operate at cooling airflow. When the call for cooling is
satisfied, the indoor blower motor will operate an additional 90
seconds at cooling airflow before transitioning back to
continuous-blower airflow.
When the call for continuous fan is removed, the indoor blower will
continue operating for an additional 5seconds, if no other function
requires blower motor operation.
COMPONENT TEST
The Infinity Control Board features a component test system to help
diagnose a system problem in the case of a component failure. To
initiate the component test procedure, ensure that there are no UI
inputs to the control (the ABCD connector can be removed from the
Infinity control board for this operation) and all time delays have
expired. Turn on setup switch SW1-6.
NOTE: The component test feature will not operate if the control is
receiving any UI signals or until all time delays have expired.
The component test sequence is as follows:
1. The control turns the inducer motor ON and keeps it ON
through step 3.
2. After waiting 10 seconds, the control turns the igniter ON for
15 seconds, then OFF.
3. The control then turns the indoor blower motor on for 15
seconds, then OFF.
4. After shutting the blower motor OFF. the control runs the
inducer for 10 seconds, then turns it OFF.
NOTE: The EAC terminals are energized when the blower is
operating.
After the component test is completed, one or more status codes (11,
25, or 41) will flash. See component test section or Status (;ode
Label for explanation of status codes.
NOTE: To repeat component test, turn setup switch SW1-6 to OFF
and then back ON.
Step 4_Unit Troubleshooting
STATUS CODE CONTINUOUS OFF
Check for 230 VAC at L1 and L2, and 24 VAC at SEC-1 and
SEC-2.
STATUS CODE CONTINUOUS ON
Control has 24 VAC power.
STATUS CODE 11 - NO PREVIOUS (;ODE
Stored status codes are erased automatically after 72 hours.
STATUS CODE 12 - BLOWER ON AFTER POWER UP
(230 VAC or 24 VAC) Blower runs for 90 seconds, if unit is
powered up during a call for heat (R-W/W1 closed) or (R-W/W1
opens) during blower on-delay period.
STATUS CODE 13 -LIMIT CIRCUIT LOCKOUT
Lockout occurs if a limit or flame rollout switch is open longer than
3 minutes or 10 successive limit trips occurred during high-heat.
Control will auto reset after three hours. Refer to status code 33.
2O