Magic-Pak V Series User manual

Page 1 of 21507389-01 Issue 1504
Improper installation, adjustment, alteration, service or maintenance can cause property damage,
personal injury or loss of life. Installation and service must be performed by a licensed professional
installer (or equivalent), service agency or the gas supplier.
WARNING
If these instructions are not followed exactly, a fire or
explosion may result causing property damage, personal
injury, or loss of life.
CAUTION
These units are not approved for mobile home applicaons.
Such use could result in property damage, personal injury,
or death.
WARNING
Do not store combusble materials near the furnace or
warm air ducts. The material may ignite by spontaneous
combuson creang a re hazard.
WARNING
For your safety, do not store or use gasoline or other
ammable vapors and liquids in the vicinity of this or any
other appliance. Such actions could result in property
damage, personal injury, or death.
WARNING
Installaon shall be made in accordance with the requirements of the local ulity and other authories having jurisdicon, or with
the Naonal Fuel Gas Code, ANSI Z223.1 (latest edion) and the Naonal Electrical Code in the United States or CAN/CGA-B149.1 &
.2 and the Canadian Electrical Code CSA C22.1 Part 1 (latest edion) in Canada. Any alteraon of internal wiring will void cercaon
and warranes.
CAUTION
Save these instrucons for future reference
HWC9 V-SeriesTM Models
INSTALLATION INSTRUCTIONS
TABLE OF CONTENTS
INSTALLATION-----------------------------------------------------2
START-UP--------------------------------------------------------- 11
OPERATION-------------------------------------------------------12
MAINTENANCE--------------------------------------------------12
WIRING DIAGRAMS--------------------------------------------20
Manufactured By
Allied Air Enterprises LLC
A Lennox International Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
*P507389-01*
*P507389-01*

Page 2 of 21 507389-01Issue 1504
install the union and manual shuto valve as well as providing
accessibility for eld wiring. Do not install directly on carpeng,
le, or other combusble material other than wood ooring.
The grille side of the unit may be ush with, or extend beyond, the
face of the exterior wall, but should not be recessed more than
2” from the face of the building and should not be obstructed
with trees, landscape materials, or building structure.
There is no minimum clearance required on locang the unit to
an interior corner of a building.
If the unit is to be enclosed, provisions should be made allowing
access to the indoor side of the unit for changing lters and for
inspecon. At least 29” of unobstructed space should be provided
in front of the indoor side, whether enclosed or not, to permit
removal of the cooling chassis should repairs or inspecon be
required.
If the unit is installed in a residenal garage, it must be located
or protected to avoid physical damage by vehicles. Unit must be
installed so the burners and ignion source are not less than 18”
(457 mm) above the oor. This unit must be installed so that no
electrical components are exposed to water.
This appliance should be installed in a locaon such that the vent
outlet is located in the following manner:
1. Distances to windows that open, building openings, or public
walkways should be consistent with the Naonal Fuel Gas
Code Z223.1 or CAN/CGA-B149.1 & .2.
2. For U.S. installaons, the vent system shall terminate a
minimum horizontal clearance of 4’ from electric meters,
regulators, and relief equipment. For installaons in Canada,
refer to the current CAN/CGA-B149.1 & .2 or with the
authories having local jurisdicon.
3. Flue products will not cause degradation to building
materials.
This furnace design is not listed for installaon in mobile homes,
recreaonal vehicles, or outdoors.
Use of Furnace as a Construcon Heater
Allied Air does not recommended the use of these units as a
construcon heater during any phase of construcon. Very low
return air temperature, harmful vapors and operaon of the unit
with clogged or misplaced lters will damage the unit.
Units may be used for heang of buildings or structures under
construcon, if the following condions are met:
• The Unit must be permanently installed per these installaon
instrucons.
• A room thermostat must control the furnace. The use of xed
jumpers that will provide connuous heang is not allowed.
• The return air duct must be provided and sealed to the
furnace.
Location
The design is cered for indoor installaon only. The interior
porons of the unit may be surrounded by a closet with
clearances to combusble material held to 0” sides, 2” top, and
1” front and plenum. Adequate clearance must be provided to
INSTALLATION
General
These instrucons must be hung on or near the furnace in a
conspicuous place.
The HWC9 V-Series™ units are self-contained, gas-red heang
with electric cooling models. The unit design has been cered by
Intertek Tesng Services for compliance with the latest edion of
the American Naonal Standard – ANSI Z21.47/Naonal Standard
of Canada – CAN/CGA-2.3 for direct vent central furnaces. The
HWC9 models are cered to be in compliance with the latest
edion of A.H.R.I. Standard 390. All models are design cered
for heang operaon when red with natural or propane gas.
These installaon instrucons are intended as a general guide
only, for use by an experienced, qualied contractor.
Inspection
The unit is shipped in one package, completely assembled and
wired. The Evaporator drain tubing is in the cooling compartment
behind the lter access panel. Fings for furnace condensate
drainage are located in the hardware kit bag.
If any damage is found, proper notaon should be made on the
carrier’s freight bill. Damage claims should be led with the
carrier as quickly as possible.
Check the rang plate to conrm heang and cooling capacies.
The unit should be operated only with the type of gas and
electrical supply noted on the rang plate.
IMPORTANT: Remove the chassis hold down shipping bracket
before installaon. These brackets are located on the outdoor
side of the unit below the louver panels.
In the State of Massachuses:
This product must be installed by a licensed Plumber or Gas
Fier. When exible connectors are used, the maximum
length shall not exceed 36”. When lever-type gas shutos
are used, they shall be T-handle type.
WARNING
Install operate and maintain unit in accordance with
manufacturer’s instrucons. The State of California has
determined that this product may contain or produce
chemicals, in very low doses, which may cause serious
illness or death. it may also cause cancer, birth defects or
reproducve harm.
WARNING

Page 3 of 21507389-01 Issue 1504
The sleeve is not intended as the sole support for the unit.
An addional support must be provided near the return
opening on the unit for adequate support. The use of
vibraon isolaon material between the unit and the support
is recommended.
CAUTION
Seal the space between the wall sleeve and the building opening
with non-hardening caulking compound. The seal must be
weatherght to prevent entrance of moisture and water into
the building.
Assure that the unit is completely seated against the gaskets on
the wall sleeve.
• Return air temperature range between 60°F (16°C) and 80°F
(27°C) must be maintained.
• Air lters must be installed in the system and must be
maintained during construcon.
• Air lters must be replaced upon construcon compleon.
• The input rate and temperature rise must be set per the
furnace rang plate.
• One hundred percent (100%) outdoor air must be provided
for combuson air requirements during construcon.
• The furnace heat exchanger, components, duct system, air
lters and evaporator coils must be thoroughly cleaned
following nal construcon clean-up.
• All furnace operang condions (including ignion, input
rate, temperature rise and venting) must be verified
according to these installaon instrucons.
Installing With a Wall Sleeve
Refer to the installaon instrucons packed with the wall sleeve
and Figure 1 for guidance in assembly and mounng using a
wall sleeve.
Make sure the gaskets aached to the sleeve are not damaged.

Page 4 of 21 507389-01Issue 1504
Figure 1
HWC Installaon
Plywood
28" Min.
Wall Sleeve
Vibration Isolating Material
FLO
O
R
6 x 22 Minimum Opening
to Align with Return Air
Opening in Unit.
""
Figure 2
HWC Evaporator Condensate Drain Installaon
Drain Pan
Open Drain Trap
Return
Air Duct
To Open
Drain Trap
Alternative
Method
5/8
" I . D.
Plastic Tube
(Supplied)
Top of Drain Tube
Must be Below
Bottom of Drain Pan
Drain Tube - Pitch 1"
for every 10 ft.
(Field Supplied)
Evaporator Condensate Drain
Install the plasc drain tube (furnished) over the 5/8” O.D. ng
in the center of the Evaporator condensate pan. Connect other
end of the drain tube to the open trap (see Figure 2). The plasc
drain connecon is provided so that it may be disconnected from
the permanent drain tubing in the building in the event it becomes
necessary to remove the cooling chassis assembly.
The drain line should pitch gradually downward at least 1” per
10’ of horizontal run to the open drain trap.
Be certain that the plasc drain tube has free drainage and is not
crimped or aened at any bend.
Installing Without a Wall Sleeve
Refer to the following direcons and Figure 1 for guidance in
installing the unit without a wall sleeve:
1. Measure the size of the unit and provide an opening in an
outside wall that will accept the unit. Local ordinances may
require a steel lintel to support the wall above the opening.
The opening must be square in all four corners.
2. Posion the unit so that the grilles on the outside face of the
unit are ush or extend beyond the face of the exterior wall,
but not recessed more than 2” from the face of the building.
Provide a support under the unit, inside the building. Make
sure that the inside support does not block the return air.
The unit should be installed level or pitched slightly to the
outside of the building so that rain water will drain away.
3. Seal the space between the unit and building opening using
a non-hardening caulking compound. The seal must be
weatherght to prevent entrance of moisture and water into
the building. Make sure the drain holes in the base are not
plugged with caulking.

Page 5 of 21507389-01 Issue 1504
Condensate
Trap
Side panel
Upper Drain hose
(From Collector box)
Lower drain hose
(To drain tting)
Drain tting
Figure 3
read street elbow into
drain tting solvent weld
piping to street elbow
Furnace condensate drain component locaons - Side exit
Condensate
Trap
Side panel
Upper Drain hose
(From Collector box)
Lower drain hose
(To drain tting)
reposition and reconnect
Drain tting
repositioned to front
Figure 4
Grommet plug
(Remove from access panel
and use here)
Furnace condensate drain component locaons - Front exit







read hose barb
into drain tting

Page 6 of 21 507389-01Issue 1504
Furnace Condensate Drain
The HWC9 furnace is provided with an internal condensate
drain and drain ng. A street elbow and a hose barb for con-
necon to the drain ng are factory-supplied in the manual
bag. All other piping is eld-supplied to suit the installaon and
local codes.
Units are shipped with the drain ng installed for side-exit
condensate drainage. The drain ng can be reposioned for
front-exit condensate drainage if desired. Do not relocate or re-
move the internal condensate trap.
If unit will be started immediately upon compleon of installa-
on, the drain must be primed as described in the procedure
outlined in the “Start-up” secon.
Field-installed piping from the furnace must slope downward a
minimum of 1/2” per foot toward the oor drain.
Piping for Side-Exit Condensate Drain
Determine whether the installaon beer suits a side-exit or a
front-exit furnace condensate drain. For side condensate drain,
see Figure 3 for component locaons and addional details. A
2” clearance to the cabinet side is required for service access to
the condensate drain ng when using the side locaon.
1. Aach the factory-supplied street elbow to the drain ng
by threading into place. Use a thread sealant suitable for
PVC; do not use thread tape.
2. Use the appropriate primer and solvent cement to bond
eld-supplied drain line piping or ngs to the PVC street
elbow. Do not use copper tubing or exisng copper conden sate
lines for drain line.
3. Route the piping to an open oor drain.
Piping for Front-Exit Condensate Drain
For front condensate drain, see Figure 4 for component loca-
ons and addional details. Use the factory-supplied hose barb
with eld-supplied exible tubing for these installaons. A 4”
clearance to the cabinet front is required for service access
when using the front locaon. The modicaons necessary to
convert to front-exit condensate drain are:
1. Disconnect the lower drain hose from the drain ng.
2. Remove the screw securing the drain ng to the division
panel.
3. Remove the drain ng and rotate it so that it faces the
front of the furnace.
4. Replace the securing screw.
5. Disconnect lower drain hose from drain trap and rotate the
hose so that the angled end will connect to the drain ng
in its new orientaon.
6. Reconnect the lower drain hose to the drain trap and drain
ng.
7. Remove the grommet plug from the front access panel and
insert it into the oval opening in the side panel.
8. Remove the perforated insulaon from inside the front
access panel around the oval opening. Be sure the area is
clean and free of insulaon and glue, as it will be used as a
sealing surface for the drain ng gasket.
9. Prior to seng the unit into operaon, replace the access
panel.
10. Aach the factory-supplied hose barb to the drain ng
by threading into place. Use a thread sealant suitable for
PVC; do not use thread tape.
11. Ax a suitable length of exible tubing to the hose barb
and route to an open oor drain. Secure the end of the
tubing to the drain.
COMBUSTION AIR
This unit is a direct-vent furnace which obtains all air needed
for combuson from outdoors.
Venting
The venng system is an integral part of the appliance. The
venng system must not be modied or added on to.
The unit contains a combuson inducer. The inducer draws the
combuson products out of the heat exchanger and forces them
from the unit to the outside. No special provisions are required
Insufficient combustion air can cause headaches,
nausea, dizziness or asphyxiation. It will also cause
excess water in the heat exchanger resulting in rusting
and premature heat exchanger failure. Excessive
exposure to contaminated combustion air will result
in safety and performance related problems. Avoid
exposure to the following substances in the combustion
air supply:
Permanent wave solutions
Chlorinated waxes and cleaners
Chlorine base swimming pool chemicals
Water softening chemicals
De-icing salts or chemicals
Carbon tetrachloride
Halogen type refrigerants
Cleaning solvents (such as perchloroethylene)
Printing inks, paint removers, varnishes, etc.
Hydrochloric acid
Antistatic fabric softeners for clothes dryers
Masonry acid washing materials
WARNING

Page 7 of 21507389-01 Issue 1504
Never use a ame to check for gas leaks. Explosion causing
injury or death may occur.
CAUTION
for supplying air for combuson, nor is a chimney required.
The vent outlet must not be altered or extended.
The venng system is designed for proper operaon under all
weather condions and for winds up to 31 m.p.h.
Removal of Unit from Common Venng System
When an exisng furnace is removed from a common venng
system serving other appliances, the venng system is likely to be
too large to properly vent the remaining aached appliances. The
following test should be conducted with each appliance while
the other appliances connected to the common venng system
are not in operaon.
1. Seal any unused openings in the common venng system.
2. Visually inspect the venting system for proper size and
horizontal pitch and determine there is no blockage or
restricon, leakage, corrosion, or other deciencies which
could cause an unsafe condion.
3. Insofar as is praccal, close all building doors and windows
between the space in which the appliances remaining
connected to the common venng system are located and
other spaces in the building. Turn on clothes dryers and any
appliance not connected to the common venng system.
Turn on exhaust fans, such as range hoods and bathroom
exhausts, so they will operate at maximum speed. Do not
operate a summer exhaust fan. Close replace dampers.
4. Following the lighng instrucons, place the unit being
inspected in operation. Adjust the thermostat so the
appliance will operate connuously.
5. Test for spillage at the dra control relief opening aer 5
minutes of main burner operaon. Use the ame of a match
or candle.
6. Follow the preceding steps for each appliance connected to
the common venng system.
7. Aer it has been determined that each appliance remaining
connected to the common venng system properly vents
when tested as outlined above, return doors, windows,
exhaust fans, replace dampers, and any other fuel burning
appliance to their previous condion of use.
8. If improper venng is observed during any of the above tests,
the common venng system must be corrected. See Naonal
Fuel Gas Code, ANSI Z223.1 (latest edion) or CAN/CGA
B149.1 & .2 Canadian Installaon Codes to correct improper
operaon of common venng system.
Gas Connecons
The gas line to the unit should be adequately sized to prevent
undue pressure drop and should never be smaller than the
manual valve used. Consult the local ulity or Naonal Fuel Gas
Code for complete details on special requirements in sizing gas
piping.
The units supplied for operaon with natural gas contain a
gas regulator which must be operated with inlet gas pressures
specied on the rang plate. If gas line pressure exceeds this
gure, an addional high pressure regulator must be installed
to reduce this pressure.
Units for operation with propane must be converted with a
kit supplied by the manufacturer and require for operaon an
inlet pressure of 11” W.C. minimum and 13” W.C. maximum. A
regulator is also required on the propane tank.
If local codes allow use of a exible gas connector, a new listed
connector must be used. Do not use a connector which has
previously serviced another gas appliance.
If a exible gas connector is required or allowed by the
authority that has jurisdiction, black iron pipe shall be
installed at the gas valve and extend outside the furnace
cabinet. The exible connector can then be added
between the black iron pipe and the gas supply line.
CAUTION
Compounds used on threaded joints of gas piping must
be resistant to the actions of liquied petroleum gases.
IMPORTANT

Page 8 of 21 507389-01Issue 1504
Electrical Connecons
All wiring must be done in accordance with the National
Electrical Code, ANSI/NFPA No. 70 (latest edion); Canadian
Electrical Code Part 1, CSA C22.1 (latest edion); or local codes,
where they prevail. Any alteraon of internal wiring will void
cercaon and warranty.
A manual shuto valve must be located outside the unit. The use
of a union located upstream of the controls is recommended,
between the controls, and the manual shuto valve. This will
facilitate removal of controls and manifold. See Figure 5 for
recommended placement of the union.
Provide a drip leg in the supply piping located exterior to the
unit. Piping must be ght and non-hardening. Pipe compound
resistant to propane must be used.
The rang plate indicates the operang voltage, phase, minimum
circuit ampacity, maximum fuse size, and minimum voltage.
Units must never be installed where voltage exceeds 10% over
the voltage indicated on the rang plate.
Units are factory wired for a 230 volt power supply. If power
supply is 208 volts, it will be necessary to change a wire
connection on unit transformer from 240 volt terminal to 208
volt terminal as shown on the wiring diagram.
Failure of the compressor as a result of operation on
improper voltage voids the compressor replacement
warranty.
A separate electric line with wire having a temperature rating
of 60°C should be run directly from the main supply panel
to the leads in the unit. Refer to the rating plate located on
the unit for proper fuse or breaker size. Make sure the unit
is electrically grounded in accordance with local codes or,
in the absence of local codes, with the National Electrical
Code, ANSI/NFPA No. 70 (latest edition) for installations in
the U.S. or the Canadian Electrical Code Part 1, CSA C22.1
(latest edition) for installations in Canada.
See rating plate for correct wire ampacity for the cooling
chassis required, and size wire accordingly.
The furnace must be isolated from the gas supply piping system by closing the individual manual shuto valve during any pressure
tesng of gas supply piping system at test pressures equal to or less than 1/2 psig or 14” W.C. If the piping system is to be tested at
pressures in excess of 1/2 psig, the furnace and its individual shuto valve must be disconnected from the gas supply piping system.
The gas valve supplied with this furnace is rated at 1/2 psig. Any higher pressure may rupture the pressure regulator diaphragm
which will cause overring of the burners and improper burner operaon. This acon may produce a high concentraon of carbon
monoxide which can result in asphyxiaon.
WARNING
Figure 5
Gas Supply Piping
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and service
to protect the furnace’s electronic controls. Precautions
will help to avoid control exposure to electrostatic
discharge by putting the furnace, the control and
the technician at the same electrostatic potential.
Neutralize electrostatic charge by touching hand and
all tools on an unpainted unit surface, such as the gas
valve or blower deck, before performing any service
procedure.
CAUTION
Leak Check
After gas piping is completed, carefully check all piping
connections (factory and eld installed) for gas leaks. Use
a leak detecting solution or other preferred means.
NOTE: If emergency shutoff is necessary, shut off the main
manual gas valve and disconnect the main power to the
furnace. The installer should properly label these devices.
Some soaps used for leak detection are corrosive to
certain metals. Carefully rinse piping thoroughly after
leak test has been completed. Do not use matches,
candles, ame or other sources of ignition to check for
gas leaks.
CAUTION

Page 9 of 21507389-01 Issue 1504
x3600 x
=Cubic Feet Per RevoluonBTU/HR
INPUT # Seconds Per Revoluon
Heang
Value
Supply and Return Duct(s)
Provide duct(s) sized suciently to handle the larger of the air
volumes for heang or cooling provided by this model.
Connect the supply duct to the top of the unit using canvas
connections or other flexible connections to prevent noise
transmission into the duct system.
To connect the return duct to the system, use a straight piece
of duct 22” wide by 6” deep. Insert the duct into the return
opening in the boom of the unit and ange the duct over the
exisng anges around the opening inside the unit. Make sure
that all sides of the duct are anged over to permit removal of
the cooling chassis if required. Use a exible connecon to aach
the remainder of the return duct. The return duct should be
sealed to the unit casing and must terminate outside the space
containing the furnace.
Adjustments – Heang Secon
Temperature Rise
At me of installaon, the temperature rise must be adjusted to
be within the range specied on the unit rang plate. See Table 2.
Pressure Regulator
The gas input must not exceed the gures shown on the rang
plate. The unit is equipped for rated inputs with manifold
pressures of: 3.5” W.C. for natural gas and 10.0” W.C. for
propane.
The manifold pressure can be measured by removing the pipe
plug in the automac gas valve. Connect a water manometer and
measure the pressure.
Only small variaons in gas input may be made by adjusng the
regulator. In no case should the nal manifold pressure vary
more than 0.3” W.C. for natural gas or 0.7” W.C. for propane.
To adjust the regulator, turn the adjusng screw on the regulator
clockwise to increase pressure and input or counterclockwise to
decrease pressure and input.
For natural gas installaons, check the burner rate by observing
the gas meter (making sure that all other gas appliances are
turned o). The test hand on the meter should be med for
at least one revoluon. Note the number of seconds for one
revoluon.
Adjustments – Cooling Secon (HWC models)
No adjustments are required or should be aempted regarding
any of the components of the cooling chassis. The chassis should
be checked to see that none of the wiring is loose or missing.
Cooling chassis is charged with R410A refrigerant.
Model
Number
Filter Area
(sq. in.)
HWC9-12 300
HWC9-18 480
HWC9-24 480
HWC9-30 480
Minimum Required Surface Area
for Disposable Filters
Table 1
Thermostat
Install the thermostat according to the direcons furnished with
it. The thermostat must be located on an inside wall where it will
not be aected by dras, sunlight, or any other heat producing
appliances. Connect the thermostat wires to the low voltage
leads on top of the unit following the wiring diagram aached
to the unit. The heat ancipator seng is 0.50 amp.
Air Filter
All indoor return air must be ltered. A permanent-type lter is
furnished with the unit, located directly behind the access panel.
Removing the panel permits access to the lter. See Figure 5.
If an installaon is made in which it is more desirable to mount the
lter exterior to the unit, in the return duct work or elsewhere, the
permanent lter can be used or replaced with a disposable lter.
If a disposable lter is used, refer to the informaon provided in
Table 1 when sizing the disposable lter.

Page 10 of 21 507389-01Issue 1504
SCFM
Temp
Rise
(F°)
SCFM
Temp
Rise
(F°)
SCFM
Temp
Rise
(F°)
SCFM
Temp
Rise
(F°)
TAP 1 (HEAT) * 208 or 230 455 42 415 46 385 50 355 54
TAP 2 (HEAT) 208 or 230 570 34 540 36 510 38 485 40
TAP 3 (HEAT) 208 or 230 655 29 625 31 595 32 575 33
TAP 4 (COOL) 208 or 230 410 370 340 305
TAP 5 (COOL) 208 or 230 455 415 385 355
TAP 1 (HEAT) 208 or 230 455 63 415 N/A 385 N/A 355 N/A
TAP 2 (HEAT) * 208 or 230 570 50 540 53 510 56 485 59
TAP 3 (HEAT) 208 or 230 655 44 625 46 595 48 575 50
TAP 4 (COOL) 208 or 230 410 370 340 305
TAP 5 (COOL) 208 or 230 455 415 385 355
TAP 1 (HEAT) * 208 or 230 630 45 600 48 570 50 550 52
TAP 2 (HEAT) 208 or 230 770 37 740 39 715 40 690 42
TAP 3 (HEAT) 208 or 230 885 32 855 34 830 35 810 35
TAP 4 (COOL) 208 or 230 605 575 545 520
TAP 5 (COOL) 208 or 230 650 615 585 555
TAP 1 (HEAT) 208 or 230 630 61 600 64 570 N/A 550 N/A
TAP 2 (HEAT) * 208 or 230 770 50 740 52 715 54 690 56
TAP 3 (HEAT) 208 or 230 885 43 855 45 830 46 810 47
TAP 4 (COOL) 208 or 230 605 575 545 520
TAP 5 (COOL) 208 or 230 650 615 585 555
TAP 1 (HEAT) 208 or 230 630 N/A 600 N/A 570 N/A 550 N/A
TAP 2 (HEAT) 208 or 230 770 61 740 64 715 66 690 68
TAP 3 (HEAT) * 208 or 230 885 53 855 55 830 57 810 58
TAP 4 (COOL) 208 or 230 605 575 545 520
TAP 5 (COOL) 208 or 230 650 615 585 555
TAP 1 (HEAT) * 208 or 230 645 44 615 47 590 49 565 51
TAP 2 (HEAT) 208 or 230 780 37 755 38 730 39 710 40
TAP 3 (HEAT) 208 or 230 900 32 875 33 855 34 835 34
TAP 4 (COOL) 208 or 230 800 775 755 735
TAP 5 (COOL) 208 or 230 880 860 835 815
TAP 1 (HEAT) 208 or 230 645 59 615 62 590 65 565 N/A
TAP 2 (HEAT) * 208 or 230 780 49 755 51 730 52 710 54
TAP 3 (HEAT) 208 or 230 900 43 875 44 855 45 835 46
TAP 4 (COOL) 208 or 230 800 775 755 735
TAP 5 (COOL) 208 or 230 880 860 835 815
TAP 1 (HEAT) 208 or 230 645 73 615 N/A 590 N/A 565 N/A
TAP 2 (HEAT) 208 or 230 780 61 755 63 730 65 710 67
TAP 3 (HEAT) * 208 or 230 900 53 875 54 855 55 835 57
TAP 4 (COOL) 208 or 230 800 775 755 735
TAP 5 (COOL) 208 or 230 880 860 835 815
TAP 1 (HEAT) 208 or 230 735 52 700 55 670 57 640 60
TAP 2 (HEAT) * 208 or 230 825 46 795 48 770 50 745 51
TAP 3 (HEAT) 208 or 230 895 43 865 44 840 46 810 47
TAP 4 (COOL) 208 or 230 800 765 735 715
TAP 5 (COOL) 208 or 230 880 845 820 795
TAP 1 (HEAT) 208 or 230 735 64 700 68 670 71 640 74
TAP 2 (HEAT) 208 or 230 825 57 795 59 770 61 745 63
TAP 3 (HEAT) * 208 or 230 895 53 865 55 840 56 810 58
TAP 4 (COOL) 208 or 230 800 765 735 715
TAP 5 (COOL) 208 or 230 880 845 820 795
-
HWC9N5511P30A 45 60- 75
HWC9N4411P18A
HWC9N4411P30A 35
35 - 65 50
HWC9N5511P18A 45 - 75
60
HWC9N3311P18A 30 - 60 45
HWC9N5511P24A 45 - 75
35
55 40
65 50
- 65 50
0.4 " w.c.
HWC9N2211P12A 25 -
HWC9N3311P12A
Model
Rise
Range
(F°)
Mid
Rise
(F°)
Indoor Blower
Speed
AIRFLOWS AND HEATING TEMPERATURE RISES
AS A FUNCTION OF EXTERNAL STATIC PRESSURE
0.2 " w.c. 0.3 " w.c.
Unit
Voltage
(V)
0.1 " w.c.
65 50
60
HWC9N4411P24A 35 -
N/A: Do not operate unit in heating mode using this blower speed at this external static pressure. Outside of temperature rise range.
* : As shipped speed for heating operation
Table 2
HWC9N3311P24A 30 - 60 45
Table 2

Page 11 of 21507389-01 Issue 1504
Blower
The unit contains a direct-drive, mulspeed blower. The proper
speeds have been preset at the factory for heang and cooling.
Refer to the wiring diagram for recommended
heang/cooling speeds for specic models. Direct-drive blower
motors are permanently lubricated and do not require oiling.
Limit Control
A xed temperature limit control is provided which will shut
o the gas to the main burners if the unit is overheated for any
reason. The control must not be adjusted or relocated.
High Altude Adjustments (U.S. Installaons)
Rangs shown on the rang plate are for elevaons up to 2000
feet. For elevaons above 2000 feet, rangs should be reduced at
a rate of 4% for each 1000’ above sea level. Refer to the Naonal
Fuel Gas Code Z223.1 (latest edion) for further explanaon.
High Altude Adjustments (Canadian Installaons)
High altude conversions may be made by the manufacturer’s
authorized representave, in accordance with the requirement
of the manufacturer, provincial, or territorial authories having
jurisdicon, and in accordance with the requirements of CAN/CGA
B149.1 or B149.2 Installaon Code. A high altude conversion kit,
available from the manufacturer and approved for this purpose,
must be used.
Installaon and Operaon in Extremely Cold Weather Areas
In areas where extremely cold (below – 20°F) outdoor temperatures
can be expected, some additional installation and operating
precauons should be taken. The following precauons are taken
to prevent possible vent system ice blockage that could result in
safety shutdown of the burners:
1. Adjust to the highest achievable temperature rise within
the rise and stac pressure ranges specied on the rang
plate. Depending on specic model, it may be possible to
change to a lower heang blower speed tap to get a higher
temperature rise. This also increases comfort.
2. Make sure there are no leaks of outside air into the return
air system.
3. Keep the outside louver grille as free as possible of any ice
that may form and obstruct the ue outlet.
START-UP
For Your Safety Read Before Lighng
If you do not follow these instrucons exactly, a re or
explosion may result causing property damage, personal
injury, or loss of life.
WARNING
This furnace is equipped with a direct ignion control. Do
not aempt to manually light the burners.
CAUTION
Priming Condensate Trap
The condensate trap must be primed with water prior to
start-up to ensure proper condensate drainage. See Figure 3 or
Figure 4 to idenfy the upper drain hose. Follow these steps to
prime the trap:
1. Disconnect the upper drain hose at the collector box.
2. Rotate the hose from beneath the control board.
3. Flex the hose so that water can be poured into it. Pour 5 .
oz. (100 mL) of water into the trap.
4. Reconnect the upper drain hose.
5. Follow the lighng instrucons to place the unit into
operaon.
6. Set the thermostat to iniate a heang demand.
To Light Main Burners
1. Turn o electrical power to unit.
2. Turn the thermostat to lowest seng.
3. Move the gas valve ON/OFF switch to the “ON” posion (see
Figure 6).
4. Turn on electrical power to the unit.
5. Set the room thermostat to the desired temperature.
(If the thermostat “set” temperature is above room
temperature aer the pre-purge me expires, main burners
will light.)

Page 12 of 21 507389-01Issue 1504
To Shut Down Main Burners
1. Turn o electrical power to unit.
2. Move the ON/OFF switch to the “OFF” posion
(see Figure 6).
OPERATION
Operaon of the unit is automac and will provide heang and
cooling depending on the seng of the thermostat.
Heang
1. Turn on main power supply.
2. Open manual gas shuto valve.
3. Set thermostat system to “HEAT”.
4. Set thermostat to temperature desired.
Cooling
1. Turn on main power supply.
2. Set thermostat system switch to “COOL”.
3. Set thermostat to temperature desired.
Heang Sequence of Operaon
1. Thermostat calls for heat.
2. Combuson blower starts and proper air ow is proven by
the pressure switch closing.
3. Blower connues to operate for 30 seconds prior to the
burners lighng.
4. Ignion control begins spark and opens gas valve. The
burners are lit. Ignion is proved through the ame sensor.
5. Circulang air blower starts 30 seconds aer the burners
light.
6. When the thermostat is sased, the burners and combuson
blower shut o.
7. Circulang air blower will shut o 120 seconds later.
If the burners should fail to ignite, the ignion control will try to
ignite the burners a total of three mes. Should the burners fail
to ignite within the three trials for ignion, the ignion control
will lock out for 1 hour before beginning another ignion cycle.
To reset the control, turn the thermostat down or o for 10
seconds and then set to desired seng. At this me, the ignion
sequence will try again.
Blower Control
The blower will start approximately 30 seconds after the
burners ignite and will stop approximately 120 seconds aer the
thermostat is sased. The me delay is preset at the factory
and ming can not be adjusted.
Cooling sequnce of Operaon
When the thermostat system switch is set for “COOL”, the blower
will start 5 seconds aer the thermostat calls for cooling and will
stop 90 seconds aer the thermostat is sased.
Connous fan Operaon
Connuous operaon of the air handling blower will be obtained
if the thermostat fan switch is set to “ON”. With the thermostat
fan switch set to “AUTO”, the air handling blower will cycle
corresponding with the thermostat cycling.
To Shut Down Unit
For temporary or short periods of shutdown, set the thermostat
system switch to “OFF”. For a prolonged period of shutdown, set
the thermostat system switch to “OFF” and turn o the electrical
power supply and the gas supply to the unit.
Gas Valve
Figure 6
Gas Inlet
ON/OFF
SWITCH
Gas Inlet
Pressure
test tap
Regulator
adjustment
Screw
(Under Cap)
Gas manifold
Pressure test
tap
MAINTENANCE
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in
dangerous operation, Serious injury, death or property
damage.
Improper servicing could result in dangereous operaon,
Serious injury, death or property damage
•Before servicing. disconnect all electrical power to
furnace
•When servicing controls, label all wires prior to
disconnecting reconnect wires correctly.
• Any disassembly of components containing ue
or vent gases shall be done by a qualied service
agency.
•Verify proper operation after servicing.
WARNING

Page 13 of 21507389-01 Issue 1504
The HWC9 models are newly designed with improved performance
and added features over previous models. Refer to Figure 7 for
heang cabinet component layout. It is recommended that the
furnace be inspected annually by a qualied service person.
Inducer prover
switch
Ignition
Control board
Remove these
screws to remove
Burner Assembly
Igniter
Combustion
Inducer
Gas Valve
Gas Manifold
Rollout switch
Burner & Manifold
Assembly
Figure 7
COMPONENT LAYOUT
Primary limit
Heat exchanger
access panel
Cold end
header box
Condensate
Drain trap
Inducer elbow
Flue tube
Drain hoses
Drain tting
Flame Sensor

Page 14 of 21 507389-01Issue 1504
Burner & manifold assembly
To remove the burner & manifold assembly:
1. Disconnect electrical service and turn o gas to the appliance.
2. Loosen the pipe union external to the unit and remove the
gas line to the gas valve.
3. Disconnect the orange high voltage spark wire at the ignion
control board.
4. Disconnect the white ame sensor wire at the ame sensor
on the underside of the burner assembly..
5. Disconnect the orange wires at the rollout switch.
6. Disconnect the red and blue wires at the gas valve.
7. Refer to Figure 8. Remove the two screws on the burner
assembly that secure it to the mounng brackets. The
mounng brackets contain pins to locate the assembly and
hold it in place aer the screws are removed. The mounng
brackets are hidden unl the burner assembly is removed.
8. First, carefully pull the burner assembly toward you unl it
is clear of the locang pins in the mounng brackets.
9. Then move the assembly away from the vest panel.
10. Finally, pull the assembly from the unit.
11. Once the burner assembly is removed, the burners can be
cleaned using a bole brush.
12. For reassembly, follow the above steps in reverse order. Use
cauon to insure rear of manifold assembly is properly
engaged in rear mounng bracket.

Page 15 of 21507389-01 Issue 1504
BURNER & MANIFOLD ASSEMBLY REMOVAL
Step 7
Mounting Brackets
Step 8
Step
9
Step 10
Burner &
Manifold
Assembly
Figure 8


Page 16 of 21 507389-01Issue 1504
Control board mounng bracket
The control board mounng bracket is designed to be removed
to allow component access for some service procedures. The
ignion control board and the inducer prover switch are mounted
to the bracket. Refer to Figure 9.
1. Disconnect electrical service and turn o gas to the
appliance.
2. The bracket is mounted to tabs molded into the side of the
cold-end header box. Depress the locking tab on the cold-end
header box that engages the lower corner of the bracket, then
slide the bracket away from the vest panel and clear of the
tabs.
3. Carefully lower and pivot the bracket and ignion board to
the boom of the compartment.
4. It may be necessary to remove the inducer prover switch
tubing at the switch.
5. For reassembly, follow the above steps in reverse order.
Igniter
The igniter can be accessed from the front of the unit without
removing any other components. To remove the igniter:
1. Disconnect electrical service and turn o gas to the appliance.
2. Disconnect the orange high voltage spark wire at the ignion
control board.
3. Remove the screw and pull the igniter out of the burner
assembly.
4. For reassembly, follow the above steps in reverse order.
Rollout switch
If for any reason the heat exchanger becomes blocked the
temperature-sensive rollout switch located beside the burners
will open and the ignion control will turn o the burners. Aer
invesgang and correcng the problem, the rollout switch must
be manually reset by pressing the buon on top of it.
The rollout switch can be accessed from the front of the unit
without removing any other components. To remove the rollout
switch:
1. Disconnect electrical service and turn o gas to the appliance.
2. Disconnect the orange leads at the rollout switch.
3. Remove the screw and slip the rollout switch from beneath
the lanced tab on the burner assembly.
4. For reassembly, follow the above steps in reverse order.
Flame sensor
1. Remove the control board mounng bracket as described
previously.
2. Remove the screw and pull the ame sensor from the boom
of burner assembly.
3. For reassembly, follow the above steps in reverse order.
Primary limit switch
The primary limit will shut down the unit in case of overheang
and automacally resets when temperature falls to an acceptable
level. It is not eld adjustable
1. Remove the control board mounng bracket as described
previously.
2. Disconnect the two orange leads at the primary limit switch.
3. Remove the three screws securing the primary limit switch
to the vest panel.
4. For reassembly, follow the above steps in reverse order.
Inducer prover switch
1. Remove the control board mounng bracket as described
previously.
2. Disconnect the two purple leads at the inducer prover switch.
3. If the tubing is in place, remove it.
4. Remove the screw securing the switch to the bracket and slip
the strap end out of the hole in the bracket.
5. For reassembly, follow the above steps in reverse order.
Burner orices
Orices are threaded into the gas manifold. To remove them:
1. Remove the burner & manifold assembly as described
previously.
2. Remove the four screws securing the gas manifold to the
burner assembly.
3. Remove the orices by unscrewing them. Do not use any
pipe thread sealant during reassembly.
4. For reassembly, follow the above steps in reverse order.
Combuson inducer
The combustion inducer can be removed for inspection,

Page 17 of 21507389-01 Issue 1504
Ignition board & Bracket removal
Tabs on Cold-End
Header box
Figure 9
Press down on
locking tab then
slide bracket
Slots on ignition
board bracket

Page 18 of 21 507389-01Issue 1504
replacement, or to access the heat exchanger and ue tube
extension for cleaning. To remove the combuson inducer:
1. Remove the control board mounng bracket as described
previously.
2. Disconnect the inducer motor leads.
3. Disconnect the inducer prover switch tubing at the switch.
4. Disconnect the drain hose tubing at the collector box.
5. Loosen the hose clamp at the inducer elbow-ue tube joint
(the upper hose clamp).
6. Remove the three screws securing the inducer to the cold-
end header box. Loosen clip at upper mount.
7. Pull the combuson inducer and elbow away from the vest
panel to move it free of the mounng legs on the cold-end
header box, while pulling the inducer elbow free of the ue
tube extension.
8. Pull the inducer and elbow out of the compartment.
6. The ue tube extension can be cleaned if necessary. Leave it
in place; do not remove it from the unit.
7. If replacing the inducer with a new part, be sure the correct
inducer orice is snapped in place.
8. For reassembly, follow the above steps in reverse order.
Combuson inducer orice
The combuson inducer orice meters the air ow needed for
proper combuson. Orices are unique to each heang input,
and the correct one must always be used. The orices are color-
coded as an aid. Refer to Table 3:
Refer to Figure 10 to remove the combuson inducer orice:
1. The combuson orice is held in place with snap-ts at the
inducer inlet and at the indicator tab at the inducer mounng
foot.
2. With the combuson inducer out of the unit, carefully pry
the round poron of the orice from the inducer inlet.
3. Remove the indicator tab from the inducer mounng foot.
Model Orice color
HWC9N22 Blue
HWC9N33 Black
HWC9N44 Gray
HWC9N55 Brown
Table 3
4. For reassembly, follow the above steps in reverse order.
Furnace condensate drain
The condensate drain ensures proper evacuaon of furnace
condensate from the collector box and inducer out of the cabinet.
If hoses are disconnected or if the drain is removed and replaced,
the drain must be primed as described in the procedure outlined
in the “Start-up” secon. To remove the condensate drain:
1. Disconnect the upper and lower drain hoses at the condensate
drain.
2. Remove the two screws that secure the drain to the vest
panel.
3. For reassembly, follow the above steps in reverse order.
4. Prime the condensate drain as described in the procedure
outlined in the “Start-up” secon.
Heat exchanger inspecon
The heat exchanger should be inspected periodically and cleaned
if necessary. The assembly can be inspected in place, but cleaning
requires accessing both ends of the primary and secondary tubes,
which can only be accomplished by removing the heat exchanger
assembly from the furnace cabinet. To access the primary heat
exchanger tubes for inspecon:
1. Remove the burner & manifold assembly as described
previously.
2. Remove the control board mounng bracket as described
previously.
3. Check the tubes for evidence of soot. If the tubes are clean,
reassembly is the reverse of the above procedure. If there
is noceable soot, connue with the heat exchanger removal
procedure to remove and clean the heat exchanger.




Combuson
Inducer
Snap into
place
rst (visible
aer
reinstalled
in unit)
Inducer
Orice
----en
Snap into
place
Figure 10

Page 19 of 21507389-01 Issue 1504
Heat exchanger removal and cleaning
1. Remove the heat exchanger access panel
2. Remove the combuson inducer as described previously.
3. Disconnect the two orange leads from the primary limit
switch at the vest panel.
4. Disconnect the upper and lower drain hoses from the
condensate drain.
5. Remove the four screws at the rear vest panel ange.
6. Remove the three screws at the boom vest panel ange.
7. Remove the three screws on the top panel of the unit that
secure the vest panel.
8. Disconnect the supply air duct if it cannot be lied slightly
to allow the top panel to be lted upward.
9. Remove the two screws closest to the front of the unit on
each side of the top panel so it can be lted upward.
10. Tilt the front edge of the top panel upward and remove the
heat exchanger assembly from the cabinet. Take care to avoid
damaging insulaon or other components.
11. With the heat exchanger assembly out of the cabinet, remove
the twelve screws securing the hot end header box to the
rear end sheet.
12. Remove the turbulators from the secondary coil tubes.
13. Back wash the heat exchanger with soapy water soluon
or steam. If steam is used its temperature must be below
275°F (135°C).
14. Thoroughly rinse and drain the heat exchanger. Soap
soluons can be corrosive. Take care to rinse the enre
assembly.
15. For reassembly, follow the above steps in reverse order.
Cooling Chassis
The refrigeraon system contained in the cooling chassis normally
requires no maintenance since it is a closed, self-contained
system. System is charged with R410A refrigerant. Periodic
maintenance is limited to:
• Cleaning the air lter. Follow direcons noted on the lter
and label aached to the access panel.
• Cleaning the condenser coil if covered with any foreign
material, lint, leaves, or other obstrucons.
If servicing or major repairs are required, the complete chassis
can be removed from the unit. To remove the chassis:
1. Shut o the main power supply.
2. Remove filter access panel and panel covering cooling
controls.
3. Remove drain hose from the drain pan.
4. Disconnect the plug-in electrical connections. Do not
seperate the connector by pulling on this wire; instead, grasp
the connector handle.
5. Disconnect two power leads at contactor (leads come from
Grommet in unit paron).
6. Remove screws from panel directly in front of blower and
remove panel. Also remove addional screws located near
top edge of control panel.
7. Drape power wires and wire harnesses out of cabinet and
tape to upper panel.
8. Slide out the chassis, being careful not to damage any seals
or parts. Parcular care should be taken to insure wiring is
not damaged during removal/reinstallaon process.
To reinstall the chassis, reverse the procedure outlined above.
Be sure that the chassis is inserted as far back as it will go before
replacing the screws. Side anges on the chassis must be engaged
with sealing strips on the unit sides to prevent water and air
leakage. Reconnect the wire harness, reconnect the power
leads, and replace both access panels before turning on the main
electrical power. Tubing is not to be used as a handle.

Page 20 of 21 507389-01Issue 1504
Figure 11



 



                             



















 
  







 


















 









 






    













 
 












   




















 





 

        




 


 
 





  
 




 




 






 





















 

 











 






