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506470-01

Issue 1007

Start-Up and Performance Checklist

Job Name _____________________________

Job No. ____________

Date ___________

Job Location ___________________________

City _______________

State ___________

Installer _______________________________

City _______________

State ___________

Unit Model No. _________________________

Serial No._____________________________

Service Technician _______________________

Nameplate Voltage _____________________

Rated Load Ampacity _________ Compressor Amperage ________

Outdoor Fan __________

Maximum Fuse or Circuit Breaker ________________________

Electical Connections Tight? Indoor Filter Clean? Supply Voltage (Unit Off) __________

Indoor Blower RPM ___________________ S.P. Drop Over Indoor (Dry) ____________________

Outdoor Coil Entering Air Temperature ________ Voltage with Compressor Operating __________

Outdoor Fan Checked?

Cooling

Liquid Line Pressure _______ Suction Line Pressure _______ Refrigerant Charge Checked?

Heating

Liquid Line Pressure _______ Suction Line Pressure _______ Refrigerant Charge Checked?

Refrigerant Lines: Leak Checked? Properly Insulated?

Service Valves: Fully Opened? Caps Tight?

Thermostat: Calibrated? Properly Set? Level?

Sequence of Operation

Heating Correct? Cooling Correct?

Page 26

Содержание 4HP18LT

Страница 1: ...may cause personal injury death or property damage Use appropriate safety gear including safety glasses and gloves when installing this equipment WARNING Installation and servicing of air conditioning...

Страница 2: ...S or Canadian Electrical Code Canada Compliance should be determined prior to installation 4HP18LT condensing units use R410A which is an ozone friendly HFC refrigerant The unit must be installed wit...

Страница 3: ...This will prevent ice from building up under the unit during a defrost cycle Refer to following roof mounting section for barrier construction if unit must face prevailing winter winds If unit coil ca...

Страница 4: ...tion as well as the section that follows entitled Flushing Existing Line Set and Indoor Coil If this unit is being matched with an approved line set or indoor coil which was previously charged with R...

Страница 5: ...a tion and the introduction of moisture into the system 3 Use silver alloy brazing rods 5 or 6 silver alloy for copper to copper brazing or 45 silver alloy for copper to brass or copper to steel brazi...

Страница 6: ...sure to empty all existing traps Residual mineral oil can act as an insulator preventing proper heat transfer It can also clog thethermalexpansionvalve reducingsystemperformance and capacity Failure...

Страница 7: ...Vertical to Horizontal Outside Wall Wood Block Between Studs IMPORTANT Refrigerant lines must not contact wall Vapor Line Liquid Line Wire Tie Inside Wall Strap Sleeve Wire Tie Wire Tie Strap Wood Blo...

Страница 8: ...existing system Refer to the gauges after shutdown to confirm that the entire system is completely void of refrigerant Disconnect the liquid and suction lines from the existing outdoor unit If the exi...

Страница 9: ...Close the valve on the inverted R 22 cylinder and the gauge set valves Pump the remaining refrigerant out of the recovery machine and turn the machine off 10 Use nitrogen to break the vacuum on the r...

Страница 10: ...ak seal To Access the Schrader Port 1 Remove the service port cap with an adjustable wrench 2 Connect gauge to the service port 3 When testing is completed replace service port cap Tighten finger tigh...

Страница 11: ...erant requirements will vary with lenths Check all joints for leaks Purge nitrogen and R410A mixture Correct any leaks and rechecks Evacuation Evacuating the system of noncondensables is critical for...

Страница 12: ...nter port hose to a nitrogen cylinder with pressure regulator set to 150 psig and purge the hose Open the manifold gauge valves to break the vacuum in the line set and indoor unit Close the manifold g...

Страница 13: ...ing plate This charge is based on a matching indoor coil and outdoor coil with 15 line set For varying lengths of line set refer to Table 4 for refrigerant charge adjustment A blank space is provided...

Страница 14: ...ure is cool use the weigh in method to charge the unit Do this after any leaks have been repaired 1 Recover the refrigerant from the unit 2 Conduct a leak check then evacuate as previously outlined 3...

Страница 15: ...ure from the liquid line temperture to determine the approach temperature Page 15 Table 6 Subcooling Values Table 5 R410A Temperature Pressure Chart T em p F P ressure P sig T em p F P ressure P sig T...

Страница 16: ...ecover refrigerant from the system to increase the approach temperature Check Charge Using Normal Operating Pressures Use Table 7 to perform maintenance checks Table 7 is not a procedure for charging...

Страница 17: ...506470 01 Issue 1007 Page 17 Table 8 L Liquid S Suction Values provided above are typical pressures Indoor unit matchup indoor air quality equipment and indoor load will case pressures to vary...

Страница 18: ...below 50 F System should be left in the emergency heat mode at least 6 hours to allow the crankcase heater sufficient time to prevent compressor slugging Defrost System The defrost system includes two...

Страница 19: ...rost mode when the compressor delay jumper is removed NOTE The 30 second off cycle is not functional when jumpering the TEST pins Time Delay The timed off delay is 5 minutes long The delay helps to pr...

Страница 20: ...er of times consecutively pause and then repeat the process The number of consecutive flashes correlates to a paticular abnormal condition TRIP LED Red indicates there is a demand signal from the ther...

Страница 21: ...removed from the module TRIP and ALERT LEDs flashing at the same time means control circuit voltage is too low for operation 24VAC Power Wiring The diagnostic module requires a constant nominal 24VAC...

Страница 22: ...When the coil is not energized the demand signal input should be less than 0 5VAC Miswired Module Codes Depending on the system configuration some ALERT flash codes may not be active The presence of...

Страница 23: ...at the outdoor fan motor compressor and indoor blower motor Values should be compared with those given on unit nameplate Check clean or replace indoor unit filters Check the refrigerant charge and ga...

Страница 24: ...t urine cottonwood seeds etc Heat Pump Operation Heat pump units have several characteristics you should be aware of Heat pumps satisfy heating demand by delivering large amounts of warm air into the...

Страница 25: ...y heat Indicating Light Most heat pump thermostats have an amber light which indicates when the heat pump is operating in the emergency heat mode Temperature Indicator The temperture indicator display...

Страница 26: ...__________ Maximum Fuse or Circuit Breaker ________________________ Electical Connections Tight Indoor Filter Clean Supply Voltage Unit Off __________ Indoor Blower RPM ___________________ S P Drop Ov...

Страница 27: ...UIPMENT GROUND HR1 L2 208 230 60 1 L1 K1 1 BLACK YELLOW RED RED C12 ORANGE B4 PURPLE B1 GROUND LUG GROUND L2 L1 208 230 60 1 DUAL CAPACITOR RED COMPRESSOR CONTACTOR BLACK COMPRESSOR CRANKCASE HEATER R...

Страница 28: ...506470 01 Issue 1007 Page 28 NOTES...

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