HP H4H3 Deep Vacuum Gauge Response, System Conditions, Triple Evacuation Method, Gauge Ports

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INSTALLATION INSTRUCTIONS

Figure 7

Deep Vacuum Gauge Response

and System Conditions

 

 

 

5000

 

 

 

 

 

 

 

4500

 

 

 

 

 

 

 

4000

 

 

 

 

 

LEAK IN

3500

 

 

 

 

 

 

 

 

 

 

SYSTEM

3000

 

 

 

 

 

 

 

 

 

 

 

 

2500

 

 

 

 

 

 

 

MICRONS 2000

 

 

 

 

 

VACUUM TIGHT

1500

 

 

 

 

 

 

 

 

 

 

TOO WET

1000

 

 

 

 

 

 

 

 

 

 

TIGHT

500

 

 

 

 

 

 

 

 

 

 

DRY SYSTEM

 

 

 

 

 

 

0

1

2

3

4

5

6

7

 

 

 

MINUTES

 

 

 

Triple Evacuation Method

The triple evacuation method should only be used when system does not contain any water in liquid form and vacuum pump is only capable of pulling down to 28 inches of mercury. Refer to Figure 8 and proceed is as follows:

1.Pull system down to 28 inches of mercury and allow pump to continue operating for an additional 15 minutes.

2.Close manifold valves or valve at vacuum pump and shut off vacuum pump.

3.Connect a nitrogen cylinder and regulator to system and fill with nitrogen until system pressure is 2 psig.

4.Close nitrogen valve and allow system to stand for 1 hour. During this time, dry nitrogen will diffuse throughout the system absorbing moisture.

5.Repeat this procedure as indicated in Figure 8.

6.After the final evacuate sequence, confirm there are no leaks in the system. If a leak is found, repeat the entire process after repair is made.

3-phase R-410A Split System Heat Pump

Figure 8

Triple Evacuation Sequence

 

 

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

CHECK FOR TIGHT, DRY SYSTEM (IF IT HOLDS DEEP VACUUM)

CHARGE SYSTEM

I. OPENING SERVICE VALVES

Outdoor units are shipped with a refrigerant charge sealed in the unit. Opening the service valves releases this charge into the system.

NOTE: Open the Suction service valve first. If the Liquid service valve is opened first, oil from the compressor may be drawn into the indoor coil TXV, restricting refrigerant flow and affecting operation of the system.

Remove Suction service valve cap and insert a hex wrench into the valve stem. Hold the valve body steady with an end-wrench and back out the stem by turning the hex wrench counterclockwise. Turn the stem until it just contacts the rolled lip of the valve body.

After the refrigerant charge has bled into the system, open the Liquid service valve.

NOTE: These are not back-seating valves. It is not necessary to force the stem tightly against the rolled lip.

The service valve cap is a primary seal for the valve and must be properly tightened to prevent leaks. Make sure cap is clean and apply refrigerant oil to threads and sealing surface on inside of cap.

Tighten cap finger tight and then tighten additional 6 of a turn (1 wrench flat) to properly seat the sealing surfaces.

J. GAUGE PORTS

Check for leaks at the schrader ports and tighten valve cores if necessary. Install plastic caps finger tight.

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Contents Installation Instructions Table of ContentsSafety Considerations Inspect NEW UnitLocation ClearancesClearances various examples Ground Level Installation Roof TOP InstallationUnit Support Fastening Unit DownRefrigeration System Installed at Indoor Coil Routing and Suspending Refrigerant LinesLiquid Line Filter-Drier Outdoor Unit Higher than Indoor UnitEvacuating Line SET and Indoor Coil Installation Instructions Service ValvesBrazing Connections Fire Hazard Opening Service Valves Deep Vacuum Gauge ResponseSystem Conditions Triple Evacuation MethodElectrical Wiring Typical Thermostat Control Circuit Connections Defrost System Defrost ThermostatDefrost Thermostat Defrost Control BoardSTART-UP Procedure Cooling ModeHeating Mode Refrigerant ChargeSequence of Operation Troubleshooting MaintenanceComfort Alertt Diagnostics some models Yellow Alert Missing PhaseYellow Alert Reverse Phase Red Trip LED410A Quick Reference Guide Trip LED and Alert LEDAlert Flash Code Alert Flash Code 5 or

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