Carrier IDEALCOMFORT 58MVC, Infinity ICS 58MVC Service And Maintenance Procedures Manual

I n f i n i t y I C S --- M o d e l 5 8 M V C , D i r e c t V e n t 4 --- W a y M u l t i p o i s e Condensing Gas Furnace With IdealComfortt IdealHumidit yt
Service and Maintenance Procedures
NOTE: Read the entire instruction manual before starting the installation.
!
WARNING
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Improper servicing could result in dangerous operation, 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.
--Verify proper operation after servicing.
!
WARNING
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in property damage, personal injury, or death.
The ability to properly perform maintenance on this equipment requires certain expertise, mechanical skills, tools, and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment other than those procedures recommended in the User’s Manual.
As an ENERGY STAR® Pa rtner, Carrier Co rporati on has determined that this product meets the ENERGY STAR® guidelines for energy effi­ciency.
SAFETY CONSIDERATIONS
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 the signal words DANGER, WARNING,
CAUTION, and NOTE. 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.
Untrained personnel can perform basic maintenance functions described in User’s Information Manual such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on heating 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.
ama
CERTIFIED
ISO 9001:2000
REGISTERED
!
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death, or property damage.
Never store anything on, near, or in contact with the furnace, such as:
1. Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners, or other cleaning tools.
2. Soap powders, bleaches, waxes or other cleaning compounds, plastic or plastic containers, gasoline, kerosene, cigarette lighter fluid, dry cleaning fluids, or other volatile fluids.
3. Paint thinners and other painting compounds, paper bags, or other paper products.
!
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
Be careful of sharp metal edges, etc. Use care and wear protective clothing, gloves, and safety glasses when removing parts.
Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified service agency personnel should install, repair, or service heating equipment.
Follow all safety codes including the National Fuel Gas Code (NFGC) NFPA 54--2006/ANSI Z223.1 -- 2006 in the USA, CSA B149.1--05 National Standard of Canada, Natural Gas and Propane Installation Codes (NSCNGPIC) in Canada, and the Installation Standards, Warm Air Heating and Air Conditioning Systems (NFPA 90B) ANSI/NFPA 90B. Wear safety glasses and work gloves. Have a fire extinguisher available during start--up and adjustment procedures and service calls.
1
58MVC
Fig. 1 -- Multipoise Furnace in Upflow Orientation
GENERAL
This furnace can be installed as a direct vent (2--pipe) or an optional ventilated combustion air condensing gas furnace. These instructions are written as if the furnace is installed in an upflow application. An upflow furnace application is where the blower is located below the combustion and controls section of the furnace, and conditioned air is discharged upward. Since this furnace can be installed in any of the 4 positions shown in Fig. 2, you may need to revise your orientation to component location accordingly.
AIRFLOW
UPFLOW
AIRFLOW
HORIZONTAL
LEFT
Fig. 2 -- Multipoise Orientation
DOWNFLOW
AIRFLOW
HORIZONTAL
RIGHT
A05085
AIRFLOW
A93041
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may damage furnace components.
Failure to follow this caution may damage furnace components. Electrostatic discharge can affect electronic components. Take precautions during furnace installation and servicing to protect the furnace electronic control. Precautions will prevent electrostatic discharges from personnel and hand tools which are held during the procedure. These precautions will help to avoid exposing the control to electrostatic discharge by putting the furnace, the control, and the person at the same electrostatic potential.
1. Disconnect all power to the furnace. DO NOT TOUCH THE CONTROL OR ANY WIRE CONNECTED TO THE CONTROL PRIOR TO DISCHARGING YOUR BODY’S ELECTROSTATIC CHARGE TO GROUND.
2. Firmly touch a clean, unpainted, metal surface of the furnace chassis which is close to the control. Tools held in a person’s hand during grounding will be satisfactorily discharged.
3. After touching the chassis, you may proceed to service the control or connecting wires as long as you do nothing that recharges your body with static electricity (for example; DO NOT move or shuffle your feet, DO NOT touch ungrounded objects, etc.).
4. If you touch ungrounded objects (recharge your body with static electricity), firmly touch furnace again before touching control or wires.
5. Use this procedure for installed and uninstalled (ungrounded) furnaces.
6. Before removing a new control from its container, discharge your body’s electrostatic charge to ground to protect the control from damage. If the control is to be installed in a furnace, follow items 1 through 5 before bringing the control or yourself into contact with the furnace. Put all used AND new controls into containers before touching ungrounded objects.
7. An ESD service kit (available from commercial sources) mayalsobeusedtopreventESDdamage.
CARE AND MAINTENANCE
For continuing high performance and to minimize possible furnace failure, it is essential that maintenance be performed annually. Consult your local dealer for maintenance and maintenance contract availability.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Turn off the gas and electrical supplies to the unit before performing any maintenance or service. Follow the operating instructions on the label attached to the furnace.
2
WASHABLE FILTER
FILTER SUPPORT
FILTER RETAINER
WASHABLE FILTER OR DISPOSABLE MEDIA FILTER IN FILTER CABINET
Fig. 3 -- Bottom Filter Arrangement
A00232
WASHABLE
FILTER
IN FURNACE
WASHABLE FILTER OR DISPOSABLE MEDIA FILTER IN FILTER CABINET
Fig. 4 -- Filter Installed for Side Inlet
FILTER RETAINER
A00233
58MVC
The minimum maintenance that should be performed on this equipment is as follows:
1. Check and clean or replace air filter each month as needed.
2. Check blower motor and wheel for cleanliness annually.
3. Check electrical connections for tightness and controls for proper operation each heating season. Service as necessary.
4. Check for proper condensate drainage. Clean as necessary.
5. Check for blockages in combustion--air and vent pipes annually.
6. Check burners for cleanliness annually.
A. CLEANING AND/OR REPLACING AIR FILTER
The air filter arrangement may vary depending on the application or orientation.
!
WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death.
Never operate unit without a filter or with the blower access panel removed. Operating a unit without a filter or with the blower access door removed could cause damage to the furnace blower motor. Dust and lint on internal parts of furnace can cause a loss of efficiency.
NOTE: If the filter has an airflow direction arrow, the arrow must point toward the blower. To clean or replace filters, proceed as follows: If filter is installed in filter cabinet adjacent to furnace:
1. Turn off electrical supply to furnace.
2. Remove filter cabinet door.
3. Slide filter out of cabinet.
4. If equipped with permanent, washable filter, clean filter by spraying cold tap water through filter in opposite direction of airflow. Rinse filter and let dry. Oiling or coating of the filter is not recommended.
5. If equipped with factory specified disposable media filter, replace only with a factory specified media filter of the same size.
6. Slide filter into cabinet.
7. Replace filter cabinet door.
8. Turn on electrical supply to furnace.
If filter is installed in furnace blower compartment:
1. Turn off electrical supply to furnace.
2. Remove main furnace door and blower access panel.
3. Release filter retainer wire. (See Fig. 3 or 4.)
NOTE: Filters shown in Fig. 3 and 4 can be in furnace blower compartment or in filter cabinet, but not in both.
4. Slide filter out of furnace.
5. Furnaces are equipped with permanent, washable filter(s). Clean filter by spraying cold tap water through filter in opposite direction of airflow.
6. Rinse filter and let dry. Oiling or coating filter is not recommended.
7. Slide filter into furnace.
8. Recapture filter retaining wire.
9. Replace blower access panel and main furnace door.
10. Turn on electrical supply to furnace.
B. BLOWER MOTOR AND WHEEL MAINTENANCE
To ensure long life, economy, and high efficiency, clean accumulated dirt and grease from blower wheel and motor annually.
The inducer and blower motors are pre--lubricated and require no additional lubrication. These motors can be identified by the absence of oil ports on each end of the motor.
The following items should be performed by a qualified service technician.
3
PLUG
T
COLLECTOR BOX
DRAIN TUBE (BLUE &
WHITE STRIPED)
CAP
COLLECTOR BOX
TUBE (PINK)
INDUCER HOUSING
(MOLDED) DRAIN
UBE (BEHIND
COLLECTOR BOX
DRAIN TUBE)
COLLECTOR BOX
DRAIN TUBE (BLUE)
COLLECTOR BOX
TUBE (GREEN ,
ROUTES BEHIND
INDUCER)
CONDENSATE
FIELD- INSTALLED
FACTORY- SUPPLIED
DRAIN TUBE
COUPLING (LEFT
58MVC
DRAIN OPTION)
FIELD- INSTALLED
FACTORY- SUPPLIED
DRAIN TUBE
FIELD- INSTALLED
FACTORY- SUPPLIED
½ - IN. CPVC STREET
ELBOWS (2) FOR
LEFT DRAIN OPTION
FIELD- INSTALLED
FACTORY- SUPPLIED
DRAIN TUBE
COUPLING (LEFT
DRAIN OPTION)
A07274
Fig. 5 -- Factory--Shipped Upflow Tube Configuration (Shown with Blower Access Panel Removed)
Clean blower motor and wheel as follows:
1. Turn off electrical supply to furnace.
2. Remove main furnace door and blower access panel.
3. Disconnect wires All factory wires can be left connected, but field thermostat connections may need to be disconnected depending on their length and routing.
4. Position control box, transformer, and door switch assembly to right side of furnace casing.
5. If condensate trap is located in left-- or right--hand side of furnace casing, proceed to item 6. Otherwise remove trap and tubing as described below (See Fig. 5.):
a. Disconnect field drain connection from condensate trap.
b. Disconnect drain and relief port tubes from condensate
trap.
c. Remove condensate trap from blower shelf.
6. Remove screws securing blower assembly to blower shelf and slide blower assembly out of furnace. Detach ground wire and disconnect blower motor harness plugs from blower motor.
NOTE: Blower wheel is fragile. Use care.
7. Clean blower wheel and motor by using a vacuum with soft brush attachment. Be careful not to disturb balance weights (clips) on blower wheel vanes. Do not bend wheel or blades as balance will be affected.
8. If greasy residue is present on blower wheel, remove wheel from the blower housing and wash it with an appropriate degreaser. To remove wheel:
a. Mark blower wheel location on shaft before disassembly
to ensure proper reassembly.
b. Loosen setscrew holding blower wheel on motor shaft.
NOTE: Mark blower mounting arms and blower housing so each arm is positioned at the same hole location during reassembly.
c. Mark blower wheel orientation and cutoff plate location
to ensure proper reassembly.
d. Remove screws securing cutoff plate and remove cutoff
plate from housing.
e. Remove bolts holding motor mounts to blower housing
and slide motor and mounts out of housing.
f. Remove blower wheel from housing.
g. Cleanwheelper instructionson degreaser cleaner.Do not
get degreaser in motor.
9. Reassemble motor and blower wheel by reversing items 8b through 8f. Ensure wheel is positioned for proper rotation.
NOTE: Be sure to attach ground wire and reconnect blower harness plugs to blower motor.
10. Reinstall blower assembly in furnace.
11. Reinstall condensate trap and tubing if previously removed.
a. Reinstall condensate trap in hole in blower shelf.
b. Connect condensate trap drain tubes. See Fig. 5 or tubing
diagram on main furnace door for proper tube location.
(1.) Connect 1 tube (blue or blue and white striped)from
collector box.
(2.) Connect 1 tube (violet or unmarked) from inducer
housing.
(3.) Connect one tube (relief port, green or pink) from
collector box.
c. Connect field drain to condensate trap.
NOTE: Ensure tubes are not kinked or pinched, as this will affect operation.
12. Reinstall control box, transformer, and door switch assembly on blower shelf.
13. Reconnect wires.
a. Refer to furnace wiring diagram and connect thermostat
leads if previously disconnected. (See Fig. 21.)
4
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Blower access panel door switch opens 115--v power to furnace control. No component operation can occur. Caution must be taken when manually closing this switch for service purposes.
12. Remove burner assembly from burner box. NOTE: All burners are attached to burner bracket and can be removed as 1 assembly.
13. Clean burners with soft brush and vacuum.
14. Reinstall manifold, orifice, and gas valve assembly in burner box. Ensure manifold seal grommet is installed properly and burners fit over orifices.
15. Reinsert the igniter wires in the slot in the manifold grommet, dressing the wires to ensure there is no tension on the igniter itself. (See Fig. 7.)
14. Turn on electrical supply. Manually close blower access panel door switch. Use a piece of tape to hold switch closed. Check for proper rotation and speed changes between heating and cooling by jumpering R to G and R to Y/Y2 on furnace control thermostat terminals. (See Fig.
15.)
15. If furnace is operating properly, release blower access panel door switch, replace blower access panel, and replace main furnace door.
C. CLEANING BURNERS
The following items should be performed by a qualified service technician. If the burners develop an accumulation of light dirt or dust, they may be cleaned by using the following procedure:
1. Turn off gas and electrical supplies to furnace.
2. Remove main furnace door.
3. Remove burner box cover.
4. Using backup wrench, disconnect gas supply pipe from furnace gas control valve.
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in furnace component damage.
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Igniter wires must be securely placed in slot in manifold grommet or else they could become pinched or severed and electrically shorted.
16. Reconnect wires to gas valve and igniter. Refer to furnace wiring diagram for proper wire location.
17. Reinstall burner box pressure tube to gas valve regulator fitting.
18. Reinstall gas supply pipe to furnace gas control valve using backup wrench on gas valve to prevent rotation and improper orientation.
CELL
PANEL
MANIFOLD MOUNTING SCREWS
58MVC
5. Remove wires from gas valve. Note location for reassembly.
6. Remove burner box pressure tube from gas valve regulator fitting.
7. Unplug igniter from harness.
8. Remove igniter leads from slot in manifold grommet.
9. Remove screws that secure manifold to burner box. (See Fig. 6.)
NOTE: Do not remove burner box from cell panel.
10. Remove manifold, orifices, and gas valve as 1 assembly.
11. Remove screws attaching burner assembly in burner box.
NOTE: Use care when removing and reinstalling burners not to strike the hot surface igniter.
5
GAS
CONTROL
VALVE
GASKET
MANIFOLD
THROTTLING VALVE
GAS VALVE REGULATOR FITTING
A07562
Fig. 6 -- Burner Box Assembly
PRIMARY HX INLET OPENINGS
58MVC
IGNIT ER WIRES MUST BE PLACED IN THIS SLOT
Fig. 7 -- Igniter Wire Placement
A05074
Fig. 8 -- Cleaning Inlet Openings of
Primary Heat Exchangers
A96305
RTV
PAM
A93087
Fig. 9 -- Combustion--air Intake
Housing Gasket Repair
6
BURNER FLAME
Fig. 10 -- Furnace Pressure and Drain Tubing Diagram
!
BURNER
FIRE, EXPLOSION, UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury, death, or property damage,.
Gas valve switch MUST be facing forward or tilted slightly.
WARNING
58MVC
A07563
MANIFOLD
Fig. 11 -- Burner Flame
NOTE: Use propane gas resistant pipe dope to prevent gas leaks.
DO NOT use Teflon tape.
A89020
!
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury or death or property damage.
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.
7
19. Replace burner box cover.
20. Turn on gas and electrical supplies to furnace.
21. Check for gas leaks.
22. Replace main furnace door.
D. CLEANING HEAT EXCHANGERS
The following items should be performed by a qualified service technician.
Primary Heat
If the heat exchangers get an accumulation of light dirt or dust on the inside, they may be cleaned by the following procedure:
NOTE: If the heat exchangers get a heavy accumulation of soot and carbon, both the primary and secondary heat exchangers should be replaced rather than trying to clean them thoroughly due to their intricate design. A build--up of soot and carbon indicates that a problem exists which needs to be corrected, such as improper adjustment of manifold pressure, insufficient or poor quality combustion air, improper vent termination, incorrect size or damaged manifold orifice(s), improper gas, or a restricted heat exchanger (primary or secondary). Action must be taken to
58MVC
correct the problem.
1. Turn off gas and electrical supplies to furnace.
2. Remove main furnace door.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in furnace component damage.
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and hazardous operation.
3. Disconnect wires or connectors to flame rollout switch,
4. Disconnect combustion--air intake pipe from intake
5. Remove the pressure switch tube from intake housing.
6. Remove screws attaching intake housing to burner box,
7. Using backup wrench, disconnect gas supply pipe from
8. Disconnect pressure tubing from gas valve.
9. Remove two screws attaching top filler panel and rotate
10. Remove screws attaching burner box to cell panel. (See
NOTE: Burner box, cover, manifold, gas valve, and burner assembly should be removed as one assembly.
11. Clean heat exchanger openings with a vacuum and a soft
12. Reverse items 4 through 10 for reassembly.
NOTE: Be sure burner box gasket is installed between burner box and cell panel. (See Fig. 6.) If gasket is damaged, replace it.
NOTE: Inspect combustion--air intake housing. If foamed gasket was removed, check for any damage. If gasket is damaged in any way, it must be repaired. To repair, remove damaged gasket section, apply sealant releasing agent such as PAM cooking spray or equivalent (must not contain corn nor canola oil, halogenated hydrocarbons nor aromatic content, to prevent inadequate seal
Exchangers
!
CAUTION
gas valve, igniter, and flame sensor.
housing.
and rotate intake housing away from burner box for removal.
furnace gas control valve.
upwards to gain access to screws attaching burner box to cell panel.
Fig. 6.)
brush. (See Fig. 8.) NOTE: After cleaning, inspect the heat exchangers to ensure they are free of all foreign objects that may restrict flow of combustion products.
from occurring) to burner box and apply a small bead of G.E. RTV 162, G.E. RTV 6702, or Dow--Corning RTV 738 sealant to edge of combustion--air intake housing. (See Fig. 9.)
!
CAUTION
UNIT MAY NOT OPERATE
Failure to follow this caution may result in improper unit operation.
Failure to attach ground wire to an adequate casing ground may cause the furnace control to lock out. The ground wire from the gas valve MUST be attached to the burner box attachment screw.
13. Refer to furnace wiring diagram and reconnect wires to flame rollout switch, gas valve, igniter, and flame sensor.
14. Reconnect pressure switch tubes to gas valve and intake housing. Refer to tube routing label on main furnace door for proper tube location. (See Fig. 10.) Be sure tubes are not kinked.
15. Turn on gas and electrical supplies to furnace.
16. Check furnace operation through 2 complete heat operating cycles. Look through sight glass in burner enclosure to check burners. Burner flames should be clear blue, almost transparent. (See Fig. 11.)
17. Check for gas leaks.
!
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death, or property damage.
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.
18. Replace main furnace door.
E. Secondary Heat Exchangers
NOTE: The condensing side (inside) of the secondary heat
exchangers CANNOT be serviced or inspected. A small number of bottom outlet openings can be inspected by removing the inducer assembly. See Flushing Collector Box and Drainage System section for details on removing inducer assembly.
F. FLUSHING COLLECTOR BOX AND DRAINAGE
SYSTEM
1. Turn off gas and electrical supplies to furnace.
2. Remove main furnace door.
3. Disconnect inducer motor and pressure switch wires or connectors.
4. Disconnect pressure switch tubes.
5. Disconnect vent pipe from inducer housing outlet by loosening coupling clamp on inducer outlet.
6. Disconnect drain tube from inducer housing. (See Fig.
10.)
NOTE: Ensure the drain tube disconnected from the inducer housing is higher than the collector box opening or water will flow out of tube.
7. Remove inducer housing assembly by removing 4 bolts attaching assembly to cell panel.
8
!
CAUTION
!
WARNING
UNIT DAMAGE HAZARD
Failure to follow this caution may result in furnace component damage.
DO NOT use wire brush or other sharp object to inspect or dislodge materials in secondary heat exchangers as cutting of the secondary heat exchanger protective coating may occur. Flush with water only.
8. Flush inside of collector box with water until discharge from condensate trap is clean and runs freely.
9. Inspect inside area of collector box for any pieces of foreign materials and remove them if present.
10. Reassemble inducer assembly by reversing items 5-- 7. Tighten the vent coupling clamp screw(s) to 15 in.--lb of torque.
NOTE: If seal between the inducer housing and the collector box is damaged in any way, it must be repaired. To repair, apply sealant releasing agent such as PAM cooking spray or equivalent (must not contain corn nor canola oil, halogenated hydrocarbons nor aromatic content, to prevent inadequate seal from occurring) to inducer housing. (See Fig. 12.) Apply a small bead of G.E. RTV 162, G.E. RTV 6702, or Dow--Corning RTV 738 sealant to groove in collector box.
11. Refer to furnace wiring diagram and reconnect wires to inducer motor and pressure switches or connectors.
12. Reconnect pressure tubes to pressure switches. See diagram on main furnace door for proper location of tubes. Be sure tubes are not kinked. (See Fig. 10.)
13. Turn on gas and electrical supplies to furnace.
14. Check furnace operation through two complete heat operating cycles. Check area below inducer housing, vent pipe, and condensate trap to ensure no condensate leaks occur. If leaks are found, correct the problem.
15. Check for gas leaks.
16. Replace main furnace door.
PAM
RTV
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death or property damage.
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.
G. SERVICING HOT SURFACE IGNITER
!
CAUTION
BURN HAZARD
Failure to follow this caution may result in personal injury.
Allow igniter to cool before removal. Normal operating temperatures exceed 2000_.
The igniter does NOT require annual inspection. Check igniter resistance before removal.
1. Turn off gas and electrical supplies to furnace.
2. Remove main furnace door.
3. Disconnect igniter wire connection.
4. Check igniter resistance. Igniter resistance is affected by temperature. Only check resistance when the igniter is at room temperature.
a. Using an ohm meter, check resistance across both igniter
leads in connector.
b. Cold reading should be between 40 ohms and 70 ohms.
5. Remove igniter assembly.
a. Remove burner box cover.
b. Remove igniter wires from slot in manifold grommet.
(See Fig. 7.)
c. Using a 1/4--in. driver, remove the single screw securing
theigniter bracketto the burner box bracket (See Fig. 13.) and carefully withdraw the igniter and bracket assembly through the front of the burner box without striking the igniter on surrounding parts. Note that the igniterbracket has a handle that extends to the front of the burner box to aid in handling. (See Fig. 13.)
d. Inspect igniter for signs of damage or failure.
BRACKET
IGNITER
9/16˝
EXTENDED IGNITER BRACKET HANDLE
58MVC
Fig. 12 -- Gasket on Collector Box
A93081
IGNITER BRACKET MOUNTING SCREW
9
11/16˝
A05075
Fig. 13 -- Igniter Bracket
H. ELECTRICAL CONTROLS AND WIRING
!
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in premature failure of the igniter.
The igniter is fragile. DO NOT allow it to hit burner box parts while removing or replacing it.
e. If replacement is required, replace igniter on igniter
bracketand then installassemblyinto burner box toavoid damage to the igniter.
6. To replace igniter and bracket assembly, reverse items 5a through 5d.
7. Reconnect igniter wire connection and insert the igniter wires in the slot in the manifold grommet, dressing the igniter wires to ensure there is no tension on the igniter
58MVC
itself. (See Fig.7.)
!
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or death.
Igniter wires must be securely placed in slot in manifold grommet or else they could become pinched or severed and electrically shorted.
2-5/32˝
A04181
Fig. 14 -- Igniter
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
There may be more than 1 electrical supply to the unit. Check accessories and cooling unit for additional electrical supplies.
The electrical ground and polarity for 115--v wiring must be maintained properly. Refer to Fig. 15 for field wiring information and to Fig. 21 for unit wiring information.
NOTE: If the polarity is not correct or furnace is not properly grounded, the STATUS LED on the furnace control will flash rapidly and prevent the furnace from operating. The control system also requires an earth ground for proper operation of the furnace control and flame sensor. The 24--v circuit contains an automotive--type, 3--amp fuse located on the furnace control. (See Fig. 16.) Any direct shorts of the 24--v wiring during installation, service, or maintenance will cause this fuse to blow. If fuse replacement is required, use ONL Y a fuse of identical size. The furnace control LED will flash status code 24 when fuse needs to be replaced. With power to the unit disconnected, check all electrical connections for tightness. Tighten all screws on electrical connections. If any smoky or burned connections are found, disassemble the connection, clean all parts, strip wire, and reassemble properly and securely. Reconnect electrical supply to unit and observe unit through 1 complete operating cycle and check for proper operation.
I. CHECKING HEAT TAPE OPERATION
(IF APPLICABLE)
In applications where the ambient temperature around the furnace is 32_F or lower, freeze protection measures are required. If this application is where heat tape has been applied, check to ensure it will operate when low temperatures are present.
NOTE: Heat tape, when used, should be wrapped around the condensate drain trap and drain line. There is no need to use heat tape within the furnace casing. Most heat tapes are temperature activated, and it is not practical to verify the actual heating of the tape. Check the following:
1. Check for signs of physical damage to heat tape such as nicks, cuts, abrasions, gnawing by animals, etc.
2. Check for discolored heat tape insulation. If any damage or discolored insulation is evident, replace heat tape.
3. Check that heat tape power supply circuit is on.
WARNING
8. Reinstall burner box cover.
9. Turn on gas and electrical supplies to furnace.
10. Verify igniter operation by initiating control board self--test feature or by cycling thermostat.
11. Replace main furnace door.
!
CAUTION
UNIT AND PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in furnace component failures or water property damage.
If this furnace is to be operated in an unconditioned space where the ambient temperatures may be 32_F(0_C) or lower, freeze protection measures must be taken. See CONDENSATE DRAIN PROTECTION section of Installation, Start--up, and Operating Instructions. (See Fig.
17.)
10
BLK
WHT
GND
115-VOLT FIELD-
SUPPLIED
FUSED
DISCONNECT
BLK
WHT
JUNCTION BOX
FIVE
WIRE
THREE-WIRE
HEATING-
ONLY
CONTROL
BOX
FURNACE
W2
COM
W/W1
Y/Y2
R
G
24-VOLT
TERMINAL
BLOCK
NOTE 2
WC Y RG
NOTE 1
NOTES: 1.
Connect Y/Y2-terminal as shown for proper operation.
2.
Some thermostats require a "C" terminal connection as shown.
3.
If any of the original wire, as supplied, must be replaced, use same type or equivalent wire.
Fig. 15 -- Field Wiring
FIELD 24-VOLT WIRING FIELD 115-, 208/230-, 460-VOLT WIRING FACTORY 24-VOLT WIRING FACTORY 115-VOLT WIRING
1-STAGE THERMOSTAT TERMINALS
CONDENSING
UNIT
FIELD-SUPPLIED
FUSED DISCONNECT
GND
A95236
208/230- OR 460-VOLT THREE PHASE
208/230­VOLT SINGLE PHASE
58MVC
A95236
J. WINTERIZING
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in furnace component damage.
Freezing condensate left in the furnace may damage the furnace.
If the furnace will be off for an extended period of time in a structure where the temperature will drop to 32_F(0_C) or below, winterize as follows:
1. Turn off electrical supply to furnace.
2. Remove main furnace door.
3. Disconnect upper inducer housing drain connection cap from inducer housing. (See Fig. 18.)
4. Connect field--supplied 1/2--in. I.D. inducer housing tube to upper inducer housing drain connection.
5. Insert funnel in tube and pour one quart of antifreeze, propylene glycol (RV, swimming pool antifreeze, or equivalent) into funnel/tube until it is visible at point where condensate enters open drain. (See Fig. 19.)
!
CAUTION
UNIT DAMAGE HAZARD
Failure of plastic components may occur.
Do not use ethylene glycol (Prestone II antifreeze/coolant or equivalent automotive type).
6. Replace drain connection cap and clamp to inducer housing.
7. Replace main furnace door.
8. Propylene glycol need not be removed before restarting furnace.
WIRING DIAGRAMS
See Fig. 15, 16 and 21 for the Deluxe 4-- Way Multipoise Furnace wiring diagrams.
TROUBLESHOOTING
Use the troubleshooting guide, the status code LED on the furnace control and the component test to isolate furnace operation problems.
A more detailed troubleshooting guide is available from your distributor.
For an explanation of status codes, refer to service label located on back of main furnace door (See Fig. 20.)
The furnace control stores all status codes for a period of 72 hours, regardless of 115--v or 24--v power interruption.
NOTE: Removing blower access panel opens blower access panel door switch and terminates 115--v power to furnace control. Before removing blower access panel or turning off 115--v power, look into blower access panel sight glass for current LED status.
1. To retrieve status code, proceed with the following:
NOTE: NO thermostat signal may be present at furnace control and all blower time delay periods must be completed.
a. Leave 115 --v power to furnace turned on.
b. Remove main furnace door.
c. Look into blower access panel sight glass for current LED
status code.
d. Remove blower access panel.
e. Turn setup switch SW1 --1 to ON position. (See Fig. 16
or 21 for location.)
f. Manually close blower access panel door switch. Use a
piece of tape to hold switch closed.
11
3. The control can also assist in troubleshooting by
!
WARNING
ELECTRICAL SHOCK, UNIT MAY NOT OPERATE HAZARD
Failure to follow this warning could result in personal injury or death.
Blower access panel door switch opens 115--v power to furnace control. No component operation can occur unless switch is closed. Caution must be taken when manually closing this switch for service purposes.
g. The AMBER LED will flash thestatuscodes in the order
of occurence. Record status codes until status code 11 flashes (1 short and 1 long).
h. After status code #11 flashes, the status codes willrepeat
until setup switch SW1--1 is turned off.
i. Remove tape to release blower access panel door switch
58MVC
and replace blower access panel.
j. Operate furnace through 1 heat cycle to test for proper
operation and check LED status.
k. If furnace is operating properlyand LEDsindicateproper
operation, replace main furnace door.
2. Status codes are erased after 72 hours or they can be manually erased by performing the following procedure:
a. Look into blower access panel sight glass for current LED
status code.
b. Remove blower access panel.
c. Turn setup switch SW1 --1 to ON position. (See Fig. 16
or 21 for location.)
d. Jumper thermostat terminals R, W/W1, and Y/Y2 on
furnace control.
e. Manually close blower access panel door switch. Use a
piece of tape to hold switch closed.
f. After status code 11 flashes for at least 2 times, remove
R, W/W1, and Y/Y2 jumpers. g.TurnsetupswitchSW1--1toOFFposition.
h. Remove tape to release blower access panel door switch
and replace blower access panel.
i. Operate furnace through 1 heat cycle to check for proper
operation and check LED status.
j. Iffurnace is operating properlyand LEDsindicateproper
operation, replace main furnace door.
performing a Component Test. The Component Test will functionally operate all furnace components, except the gas valve.
NOTE: The component test feature will not operate if the furnace control is receiving any thermostat signals or until all time delays have expired.
a. To initiate Component Test proceed with the following:
(1.) Leave 115--v power to furnace turned on.
(2.) Remove main furnace door. (3.) Remove blower access panel.
(4.)TurnsetupswitchSW1--6toONposition.
(5.) Manually close blower access panel door switch.
Use a piece of tape to hold switch closed.
b. When items (1) through (5) above have been completed,
the following will occur:
(1.) Inducer motor operates at medium speed through
step (3), then turns off.
(2.) After waiting for 15 sec, hot surface igniter is
energized for 15 sec, then de--energized.
(3.) Main blower motor operates at midrange airflowfor
15 sec, then turns off.
(4.) After component operation test is completed, 1 or
more fault codes (11, 25, 41, or 42) will flash. See service label on back of main furnace door or Fig. 20 for explanation of codes.
NOTE: To repeat component test, turn setup switch SW1--6 to OFF and then back to ON.
c. After component test, perform the following:
(1.) Remove tape to release blower access panel door
switch and turn setup switch SW1--6 to OFF
position. (2.) Replace blower access panel.
(3.) Operate furnace through 1 heat cycle to check for
proper operation and check LED status. (4.) If furnace is operating properly and LEDs indicate
proper operation, replace main furnace door.
12
T
MODEL PLUG CONNECTOR
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
24-V THERMOSTAT
TERMINALS
USER INTERFACE
OR ADVANCED
PRODUCT
MONITOR
CONNECTOR
CONTINUOUS FAN
(CF) AIRFLOW
SETUP SWITCHES
OAT
CONNECTOR
SW4 SETUP
SWIT CHES
HUMIDIFIER
TERMINAL (24-VAC
0.5 AMP MAX.
ACRDJ – AIR
CONDITIONING
RELAY DISABLE
JUMPER
58MVC
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
STATUS AND COMM
LED LIGHTS
3-AMP FUSE
RANSFORMER 24-VAC
CONNECTIONS
115-VAC (L2) NEUTRAL
CONNECTIONS
PL1 – LOW VOLTAGE MAIN
HARNESS CONNECTOR
Fig. 16 -- Variable Capacity Furnace Control
EAC-1 TERMINAL
(115 -VAC 1.0 AMP MAX.)
V12 HK42FZ022 3407
SOFTWARE
VERSION
EXAMPLE:
PART
NUMBER
VOLTAGE CONNECTIONS
DATE
CODE
115-VAC (L1) LINE
PL3 – ECM BLOWER
HARNESS
CONNECTOR
BOARD SERIAL
NUMBER
PL2 – HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
A07422
13
32oF MINIMUM INSTALLED AMBIENT OR FREEZE PROTECTION REQUIRED
58MVC
A93058
Fig. 17 -- Freeze Protection
A99118
Fig. 18 -- Inducer Housing Drain Tube
A99119
Fig. 19 -- Funnel in Drain Tube and Antifreeze
Running Through Trap
14
58MVC
A07564
Fig. 20 -- Service Label
15
58MVC
A06677
Fig. 21 -- Wiring Diagram
16
NO
SEY SEY SEY
NO
NONO
Close door switch.
Is door switch closed?
NO
Is circuit breaker closed?
NO
Check for continuity in wire from circuit
breaker to furnace.
Close circuit breaker and go back to
START.
Check room thermostat or
interconnecting cable.
Is 24V present at W/W1, W2, Y1, Y/Y2 or
NO
YES
Is there 115V going to switch?
NO
Replace door switch.
Replace transformer.
Does the control respond to W/W1, W2,
NO
G thermostat terminals on the furnace
Y1, Y/Y2, and G (24V) thermostat
control?
signals?
YES
Disconnect all the thermostat wires from
the furnace control.
YES
Run system through a low-heat, medium-
operation. Status codes are erased after
heat, high-heat, or cooling cycle to check
72 hours or can be manually erased by
putting setup switch SW1-1 in the ON
Y/Y2 simultaneously until status code
position and jumpering R, W/W1, and
NO
The thermostat is not compatible with the
furnace control. Either install a ballast
terminal to the thermostat, or replace the
Does the problem repeat when using a
jumper wire?
resistor, connect the Com24V thermostat
thermostat.
YES
58MVC
Replace furnace control.
Troubleshooting Guide
Is there 115V at L1 and L2?
START
Is AMBER LED stat us light on?
YES
YES
will repeat. Status codes
Is there 24V at SEC-1 and SEC-2?
Replace furnace control.
units are twinned, check for proper low-
Check for correct line voltage polarity. If
voltage (24V) transformer phasing.
YES
light blinking
Is AMBER LED status
rapidly without a pause?
NO
To recall previous status codes disconnect the R
Is AMBER LED status light blinking
NO
thermostat connection, reset power, and put setup
switch SW1-1 in the ON position. The AMBER LED
ON/OFF slowly with a combination of
YES
and jumpering R, W/W1, and Y/Y2 simultaneously
by putting setup switch SW1-1 in the ON position
are erased after 72 hours or can be manually erased
setup switch SW1-1 in the OFF position.
Determine status code. The status code
determined by the number of short
than #11?
Was there a previous status code other
YES
Go to section below for the status code
A07581
17
p
p
LOCKOUT Auto-reset
45 CONTROL CIRCUITRY
open.
after 1 hour lockout due
to:
- Gas valve relay stuck
- Flame circuit failure.
- Software check error.
Reset power to clear
lockout. Replace control
if code repeats.
harness and igniter. Replace
Replace furnace control.
Check for continuity in the
defective component.
Check that all gas valves are
Check connections. If OK,
turned on. Replace valve.
replace control.
or rough ignition.
bracket.
and check manifold pressure.
intermittent operation.
Check connections and retry.
(4.0-6.0 nominal) and burners
in high-heat. If burners will
control. If burners operate in
high-heat then switch to
pressure. If OK, check
Allow unit to drop to low-heat,
Check for:
- Inadequate ame carryover
- Low inlet gas pressure.
- Proper ring rate.
- Air leakage around igniter
Repeat test to check for
If current is near typical value
will not stay on, repeat check
still not stay on replace
sensor location.
medium-heat, check manifold
burner carryover and ame
NO
YES
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
58MVC
SWITCH IS CLOSED - Check for:
WHILE MEDIUM-HEAT PRESSURE
- Low-heat pressure switch stuck open.
43 LOW-HEAT PRESSURE SWITCH OPEN
NOT CLOSE OR REOPENED – If opens
during blower on-delay period, blower will
come on for the selected blower o-delay.
32 LOW-HEAT PRESSURE SWITCH DID
- Disconnected or obstructed pressure
If opens within 5 minutes after ignition the
tubing.
next heating cycle will be restricted to
- Low inlet gas pressure (if LGPS used).
- Improper pressure switch wiring.
high-heat. Check for:
- Proper vent sizing.
- Plugged condensate drain.
- Low inlet gas pressure (if LGPS used).
pipe.
repeat component test by turning setup
switch SW1-6 OFF and then back ON.
NEUTRAL-L2 on the control. Was 115V
Unplug igniter harness from control and
- Water in vent piping, possible sagging
Check for 115V between pin 3 and
thermostat to call for heat. Connect
present for the 15 second period?
Reconnect the R thermostat lead and set
voltmeter across gas valve connections.
Does gas valve receive 24V?
Does gas valve open and allow gas to
Do the main burners ignite?
ow?
Do the main burners stay on?
period. Is the DC microamps below 0.5?
Repeat call for heat and check ame
sensor current during trial for ignition
Clean ame sensor with ne steel wool
4.0 to 6.0 microamps.
and recheck current. Nominal current is
NO
status code #33
e.
tubing.
- Restricted combustion air supply.
- Disconnected or obstructed pressure
- Defective or miswired pressure switches
i
setup switch SW1-3 ON.
- Excessive wind. If problem persists turn
- Plugged condensate drain.
- Water in vent piping, possible sagging
furnace is operating in high-heat only
limit or ame rollout switch is open or the
33 LIMIT CIRCUIT FAULT – Indicates the
mode due to 2 successive low- or
medium-heat limit trips. Blower will run for
4 min. or until open switch remakes
Flame rollout switch requires manual
continues to ash until blower shuts o.
whichever is longer. If open longer than 3
reset. Check for:
min., code changes to lockout #13. If
open less than 3 min.
- Loose blower wheel.
- Proper rear air bae.
- Defective switch or connections.
- Improper low- or medium-heat gas input
shield.
adjustment.
- Improper or misaligned limit and/or limit
- Stuck high-heat solenoid in gas valve.
34 IGNITION PROVING FAILURE – If ame is
occurs. If ame signal is lost during the
sequence 3 more times before lockout #14
blower on-delay period, blower will come on
for the selected blower o-delay. Check
the following items rst before proceeding
to the next step.
- Gas valve turned o.
not sensed during the trial for ignition
period, the control will repeat the ignition
- Manual shut-o valve.
Is current near typical value? Replace electrode.
Will main burners ignite and stay on? Replace furnace control.
Fixed.
YES
to furnace sheet metal.
- Green/Yellow wire MUST be connected
To determine whether the problem is in the
thermostat connection from the control,
- Flame sensor must not be grounded.
gas valve, igniter, or ame sensor the
system can be operated in component test
Does the igniter glow orange/white by the
mode. To check the igniter remove the R
reset power, and put setup switch SW1-6 in
the ON position to start the component test.
end of the 15 second warm-up period?
erased after 72 hours or can be manually
#11 is ashed. Run system through a low-
erased by putting setup switch SW1-1 in
and Y/Y2 simultaneously until status code
heat, high-heat, or cooling cycle to check
system.
the ON position and jumpering R, W/W1,
11 NO PREVIOUS CODE – Status codes are
powered up during a call for heat (R-
Blower runs for 90 seconds, if unit is
W/W1 closed) or when (R-W/W1 opens)
(115V OR 24V) – Normal operation.
during the blower on-delay period.
12 BLOWER ON AFTER POWER UP –
13 LIMIT CIRCUIT LOCKOUT – Lockout
ame rollout switch is
open longer than 3 minutes or 10
occurs if the limit or
successive limit trips occurred during high-
the blower failed to reach 250 RPM or the
blower failed to communicate within 30
auto-reset after 3 hours. See code 41.
21 GAS HEATING LOCKOUT – Turn o
power and wait 5 minutes to retry. Check
for:
- Stuck closed gas valve relay on control.
See code 33.
heat. Control will auto-reset after 3 hours.
ignite gas and prove ame in 4 attempts.
status code 34.
Control will auto-reset after 3 hours. See
14 IGNITION LOCKOUT – System failed to
15 BLOWER MOTOR LOCKOUT – Indicates
seconds after being turned ON in two
successive heating cycles. Control will
- Miswire or short to gas valve wire.
22 ABNORMAL FLAME-PROVING SIGNAL
Flame is proved while gas valve is de-
energized. Inducer will run until fault is
cleared. Check for:
- Stuck open or leaky gas valve.
Check for:
- Obstructed pressure tube.
23 PRESSURE SWITCH DID NOT OPEN –
- Pressure switch stuck closed.
Check for:
- Short circuit in secondary voltage (24V)
24 SECONDARY VOLTAGE FUSE IS OPEN
A07582
Disconnect thermostat leads to isolate
wiring including thermostat leads.
short circuit.
18
You have an open wire or bad
terminal on either the BLACK or
WHITE power leads between
the furnace control and the
power choke disconnect it and
blower motor. If you have a
check continuity.
terminal on either the RED or
GREEN wire between the
You have an open wire or bad
GREEN (-)?
YELLOW (+) and PL3-2
YES
You have an open wire or bad
terminal on the YELLOW wire
between the furnace control and
the blower motor.
NO
motor.
furnace control and the blower
Is there 5-VDC at PL3-3
NO
YES
Turn power back on. Is there 115VAC at
YES
YES
NO
NO
NO
YES
NO
58MVC
Replace the furnace control.
Is there 5-VDC at PL13-2 YELLOW (+)
PL14-5 and PL14-4?
PL13-4 GREEN (-)?
Is there 12-VDC at PL13-1 RED (+) and
Is there 12-VDC at PL3-1 RED (+) and
PL3-2 GREEN (-)?
and PL13-4 GREEN (-)?
The voltage just measured should be
very stable and should not uctuate more
than .02-VDC. If the voltage uctuates
more than this get a dierent voltmeter
before proceeding.
YES
Turn power o, reconnect PL13 and
PL14 to the blower motor, then turn
power back on. Connect a DC voltmeter
YES
across PL3-3 YELLOW (+) and PL3-2
more than it did in the previous step?
GREEN (-). Does the voltage uctuate
NO
Turn power o, disconnect PL13 and
PL14 from the blower motor, then turn
power back on. Connect a DC voltmeter
across PL13-3 BLUE (+) and PL13-4
0-VDC but it will uctuate briey several
several times a second. If you have a
show a large change in magnitude on the
have a standard digital voltmeter it will
show a brief uctuation in voltage and the
GREEN (-). The voltage should be near
NO
times a second. If you have an analog
voltmeter the needle will briey go high
digital voltmeter with a bar graph it will
bar graph several times a second. If you
YES
voltmeter used.
magnitude may vary depending on the
41 BLOWER MOTOR FAULT – Indicates the
25 INVALID MODEL SELECTION OR
blower failed to reach 250 RPM or the
SETUP ERROR – If status code 25 only
blower failed to communicate within the
prescribed time limits. Thirty seconds
ashes 4 times on power-up the control is
missing its model plug PL4 and is
after being turned ON or ten seconds
during steady-state operation. Turn power
o and check the following items rst
continuously it could indicate any of the
memory. If status code 25 ashes
defaulting to the model selection stored in
before proceeding to the next step.
- Rubbing blower wheel.
following:
- Model plug PL4 is missing and there is
motor.
- Wiring from furnace control to blower
- Loose blower wheel.
memory. This will happen if you forget
no valid model stored in permanent
to install the model plug PL4 on a
the furnace control, disconnect both
connectors from the blower motor PL13
Remove the R thermostat connection from
service replacement control.
- Thermostat call with SW1-1 ON.
- Thermostat call with SW1-6 ON.
and PL14. Does the blower wheel turn
freely?
- Two dierent furnace models twinned.
- SW1-1 and SW1-6 both ON.
- Service replacement control does not
Replace the blower control module attached to
the blower motor. Follow the instructions with
Replace the blower control module attached to
the blower control module to make sure the
replaced.
You have an open wire or bad terminal on the
entire blower motor does not need to be
blower motor. NOReplace the furnace control.
BLUE wire between the furnace control and the
(+) and PL3-2 GREEN (-). Does the voltage
Connect a DC voltmeter across PL3-4 BLUE
uctuate as described two steps back?
Does the voltage uctuate as described in the
previous step?
the blower motor. Follow the instructions with
entire blower motor does not need to be
the blower control module to make sure the
replaced.
YES
version V12 or later.
recognize new model plugs HK70EZ017
thru HK70EZ021. Need board software
31 MEDIUM-HEAT PRESSURE SWITCH OR
HPSR RELAY DID NOT CLOSE OR
REOPENED - Check for:
inducer motor has not started within 20
- See status code 32.
- HPSR relay may be defective.
42 INDUCER MOTOR FAULT – Indicates the
seconds after a call for heat, the inducer
motor RPM is outside its valid range of
lost for 5 seconds during operation.
operation, or the inducer RPM signal was
Check for:
- Failed inducer motor.
- Improper motor wiring.
- Proper vent sizing.
- Restricted combustion air supply.
A07583
19
SERVICE TRAINING
Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including:
• Unit Familiarization • Maintenance
• Installation Overview • Operating Sequence A large selection of product, theory, and skills programs is available, using popular video-based formats and materials. All include video and/or slides, plus companion book.
Classroom Service Training plus "hands-on" the products in our labs can mean increased confidence that really pays dividends in faster troubleshooting, fewer
58MVC
callbacks. Course descriptions and schedules are in our catalog.
CALL FOR FREE CATALOG 1-800-644-5544
[ ] Packaged Service Training [ ] Classroom Service Training
Copyright 2007 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Printed in U.S.A. Edition Date: 07/07
Catalog No: 58MVC ---01SM
Replaces: New
20
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