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15

Infinity Furnace

A06301

Fig. 15 -- Control Voltage Wiring Connections

PRE--START--UP

FIRE, EXPLOSION, ELECTRICAL SHOCK AND

ENVIRONMENTAL HAZARD

Failure to follow this warning could result in personal

injury or death and/or property damage.

1. Follow recognized safety practices and wear protective

goggles when checking or servicing refrigerant system.

2. Do not operate compressor or provide any electric power

to unit unless compressor terminal cover is in place and
secured.

3. Do not remove compressor terminal cover until all

electrical sources are disconnected and tagged.

4. Relieve and recover all refrigerant from system before

touching or disturbing anything inside terminal box if
refrigerant leak is suspected around compressor

terminals.

5. Never attempt to repair soldered connection while

refrigerant system is under pressure.

6. Do not use torch to remove any component. System

contains oil and refrigerant under pressure.

7. To remove a component, wear protective goggles and

proceed as follows:

a. Shut off gas supply to unit.

b. Shut off electrical power to unit and install

lockout tag.

c. Relieve and reclaim all refrigerant from system

using both high-- and low--pressure ports.

d. Cut component connecting tubing with tubing

cutter and remove component from unit.

e. Carefully unsweat remaining tubing stubs when

necessary. Oil can ignite when exposed to flame.

!

WARNING

Use the Start--Up Checklist supplied at the end of this book and

proceed as follows to inspect and prepare the unit for initial
start--up:

1. Remove all access panels.
2. Read and follow instructions on all DANGER, WARNING,

CAUTION, and INFORMATION labels attached to, or
shipped with unit.

3. Make the following inspections:

a. Inspect for shipping and handling damages, such as

broken lines, loose parts, disconnected wires, etc.

b. Inspect for oil at all refrigerant tubing connections and

on unit base. Detecting oil generally indicates a
refrigerant leak. Leak test all refrigerant tubing
connections using electronic leak detector, or

liquid--soap solution. If a refrigerant leak is detected, see
following Check for Refrigerant Leaks section.

c. Inspect all field-- and factory--wiring connections. Be

sure that connections are completed and tight.

d. Ensure wires do not touch refrigerant tubing or sharp

sheet metal edges.

e. Inspect coil fins. If damaged during shipping and

handling, carefully straighten fins with a fin comb.

4. Verify the following conditions:

a. Make sure gas line is free of air. Before lighting the unit

for the first time, perform the following with the gas

valve in the OFF position:

NOTE

: If the gas supply pipe was not purged before connecting

the unit, it will be full of air. It is recommended that the ground
joint union be loosened, and the supply line be allowed to purge
until the odor of gas is detected. Never purge gas lines into a
combustion chamber. Immediately upon detection of gas odor,
retighten the union. Allow 5 minutes to elapse, then light unit.

b. Make sure that condenser--fan blade is correctly

positioned in fan orifice. Top 1/3 of condenser fan blade
should be within fan orifice venturi.

c. Ensure fan hub is positioned correctly with respect to

motor housing (See Fig. 25).

d. Make sure that air filter(s) is in place.

e. Make sure that condensate drain trap is filled with water

to ensure proper drainage.

f. Make sure that all tools and miscellaneous loose parts

have been removed.

48X

T

--

A

Summary of Contents for INFINITIR 15 SEER 48XT-A

Page 1: ...Ground Screw 12 Routing Control Power Wires 12 Accessory Installation 13 Special Procedures for 208 v Operation 13 PRE START UP 15 START UP 16 28 Unit Start Up and Troubleshooting 16 Sequence of Oper...

Page 2: ...ated for Puron R 410A WARNING CUT HAZARD Failure to follow this caution may result in personal injury When removing access panels or performing maintenance functions inside your unit be aware of sharp...

Page 3: ...taff should handle and install this equipment When working with this equipment observe precautions in the literature on tags stickers and labels attached to the equipment and any other safety precauti...

Page 4: ...set up for unit being installed 2 Seal strip must be applied as required to unit being installed 3 Roof curb is made of 16 gauge steel 4 Attach ductwork to curb flanges of duct rest on curb 5 Insulate...

Page 5: ...5 A09150 Fig 5 48XT A24 30 Unit Dimensions 48XT A...

Page 6: ...6 A09151 Fig 6 48XT A36 60 Unit Dimensions 48XT A...

Page 7: ...2800 22 559 1 8 825 2800 22 559 1 8 825 2800 22 559 1 8 825 2800 22 559 1 8 825 INDOOR COIL Rows Fins in Face Area sq ft 3 17 3 7 3 17 3 7 3 17 3 7 3 17 4 7 3 17 4 7 3 17 4 7 3 17 4 7 INDOOR FAN Nomin...

Page 8: ...ill Size Natural Gas 3 38 3 33 3 31 3 38 3 33 3 31 HIGH PRESSURE SWITCH psig Cut out Reset Auto 670 10 470 25 HIGH PRESSURE SWITCH 2 psig Compressor Solenoid Cut out Reset Auto 565 15 455 15 LOSS OF C...

Page 9: ...anvas or similar heat resistant material connector between ductwork and unit discharge connection If flexible duct is used insert a sheet metal sleeve inside duct Heat resistant duct connector or shee...

Page 10: ...tion requires draining the condensate water away from the unit install a field supplied 2 in 51 mm trap at the condensate connection to ensure proper drainage Condensate trap is available as an access...

Page 11: ...th shall not exceed 36 in 915 mm 3 When lever handle type manual equipment shutoff valves are used they shall be T handle valves 4 The use of copper tubing for gas piping is NOT approved by the state...

Page 12: ...ircuit breaker size and minimum circuit amps ampacity for wire sizing The field supplied disconnect may be mounted on the unit over the high voltage inlet hole See Fig 5 and 6 Operation of unit on imp...

Page 13: ...appear at UI Re wire thermistor correctly for normal operation B Humidifier Connections The furnace control board terminal marked HUM is provided for low voltage 24 vac control of a humidifier No hum...

Page 14: ...AD SINGLE PHASE CONNECTIONS TO DISCONNECT PER NEC LEGEND NEC National Electrical Code Field Wiring Splice Connections NOTE Use copper wire only L1 L2 A06299 Fig 13 Line Power Connections FURNACE BOARD...

Page 15: ...NG CAUTION and INFORMATION labels attached to or shipped with unit 3 Make the following inspections a Inspect for shipping and handling damages such as broken lines loose parts disconnected wires etc...

Page 16: ...ion Fault on amber STATUS LED No further troubleshooting information will be available at UI until communications are re established If either COMM LED does not light within proper time period and sta...

Page 17: ...0 VAC or 24 VAC Blower runs for 90 seconds if unit is powered up during a call for heat R W W1 closed or R W W1 opens during blower on delay period STATUS CODE 13 LIMIT CIRCUIT LOCKOUT Lockout occurs...

Page 18: ...18 A09080 Fig 17 Wiring Schematic 48XT A Single Phase Gas Inputs 040 060 090 kBtu hr 48XT A...

Page 19: ...19 A09081 Fig 18 Wiring Schematic 48XT A Single Phase Gas Inputs 115 130 kBtu hr 48XT A...

Page 20: ...h fine steel wool proper flame sense microamps 5 microamps D C min 4 0 6 0 nominal manual valve shut off low inlet gas pressure control ground continuity gas valve defective or turned off flame sensor...

Page 21: ...satisfied NOTE Heat stages are not shortened due to a 5 degree or higher demand All stages are utilized for the full allotted time described above If the UI determines it is making sufficient progress...

Page 22: ...e Ther mal Cutout 72 Compressor voltage sensed then disappears while cooling or heat ing demand exists Possible causes are internal compressor over load trip or start relay not releasing if installed...

Page 23: ...O are selected by the Infinity Control User Interface the dip switches are not used AUTO defrost adjusts the defrost interval time based on the last defrost time as follows S When defrost time 3 minut...

Page 24: ...low of gas to the burners and de energizing the HUM terminal The inducer motor will remain on for a 4 second post purge period The indoor blower and air cleaner terminal EAC 1 will remain energized fo...

Page 25: ...s meter to complete one revolution d Divide number of seconds in step c into 3600 number of seconds in 1 hour e Multiply result of step d by the number of cubic feet shown for one revolution of test d...

Page 26: ...ssive restrictions causing static pressures in excess of 5 in wc d Make sure model plug is installed 8 Final Check a Turn off gas to unit b Remove manometer from pressure tap c Replace pipe plug on ma...

Page 27: ...e component test section or Status Code Label for explanation of status codes NOTE To repeat component test turn setup switch SW1 6 to OFF and then back ON Check for Refrigerant Leaks Locate and repai...

Page 28: ...se unavailable If communications cannot be established with the UI the Infinity furnace board will enable the standard thermostat input terminals to allow simple thermostatic control of the 48XT A uni...

Page 29: ...0 047 42 0 014 0 017 0 020 0 024 0 027 0 031 0 035 0 039 0 043 48 0 027 0 032 0 036 0 041 0 046 0 052 0 057 0 063 0 068 60 0 029 0 032 0 036 0 040 0 045 0 049 0 053 Table 8 Filter Pressure Drop Table...

Page 30: ...maintenance to the accessories as recommended in the accessory instructions Air Filter IMPORTANT Never operate the unit without a suitable air filter in the return air duct system Always replace the...

Page 31: ...the motor shaft when tightening 7 Replace grille Infinity Top A06035 UNIT SIZE A DIM IN MM 24 1 26 30 1 26 36 1 26 42 1 26 48 11 32 9 60 9 16 14 Fig 25 Outdoor Fan Blade Clearance Electrical Controls...

Page 32: ...efrigerant charging REFRIGERANT UNIT OPERATION SAFETY AND ENVIRONMENTAL HAZARD Failure to follow this warning could result in personal injury or equipment damage This system uses Puron R 410A refriger...

Page 33: ...contactor and fan relay are de energized Compressor and fan operation are not allowed until voltage is a minimum of 190v The control will flash the appropriate fault code See Table 4 230V LINE POWER D...

Page 34: ...e thermistor comparison is not performed during low ambient cooling operation FAILED THERMISTOR DEFAULT OPERATION Factory defaults have been provided in the event of failure of outdoor air thermistor...

Page 35: ...0 psig low side retard S Use hoses with minimum 700 psig service pressure rating S Leak detectors should be designed to detect HFC refrigerant S Puron as with other HFCs is only compatible with POE oi...

Page 36: ...load or increase unit size UI temperature set too low too high Reset UI setting Low refrigerant charge Locate leak repair and recharge Air in system Recover refrigerant evacuate system and re charge O...

Page 37: ...t 2 Check gas valve Inducer pressure switch not closing 1 Check pressure switch wires connections and tubing Repair or replace if necessary Inadequate heating Dirty air filter Clean or replace filter...

Page 38: ...I START UP ELECTRICAL SUPPLY VOLTAGE COMPRESSOR AMPS INDOOR EVAPORATOR FAN AMPS TEMPERATURES OUTDOOR CONDENSER AIR TEMPERATURE DB RETURN AIR TEMPERATURE DB WB COOLING SUPPLY AIR DB WB GAS HEAT SUPPLY...

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