Bedienungsanleitung Inventor P9VO32 Passion Eco (Seite 31 von 156) (Deutsch, Englisch)

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 Page 30 

CAUTION DO NOT mix refrigerant types.

Close the Low Pressure side of the manifold

gauge, and turn off the vacuum pump.

Wait for 5 minutes, then check that there

has been no change in system pressure.

If there is a change in system pressure, refer

to Gas Leak Check section for information

on how to check for leaks. If there is no

change in system pressure, unscrew the cap

from the packed valve (high pressure valve).

Insert hexagonal wrench into the packed valve

(high pressure valve) and open the valve by

turning the wrench in a 1/4 counterclockwise

turn. Listen for gas to exit the system, then

close the valve after 5 seconds.

10.

Watch the Pressure Gauge for one minute

to make sure that there is no change in

pressure. The Pressure Gauge should read

slightly higher than atmospheric pressure.

Flare nut

Cap

alve body

Valve stem

11.

Remove the charge hose from the service port.

12.

Using hexagonal wrench, fully open both the

high pressure and low pressure valves.

13.

Tighten valve caps on all three valves (service

port, high pressure, low pressure) by hand.

You may tighten it further using a torque

wrench if needed.

OPEN VALVE STEMS GENTLY

When opening valve stems, turn the hexagonal

wrench until it hits against the stopper. Do not

try to force the valve to open further.

Note on Adding Refrigerant

ADDITIONAL REFRIGERANT PER PIPE LENGTH

Fig. 6.2

Some systems require additional charging depending on pipe lengths. The standard pipe length varies

according to local regulations. For example, in North America, the standard pipe length is 7.5m (25’).

In other areas, the standard pipe length is 5m (16‘). The refrigerant should be charged from the

service port

on the outdoor unit’s low pressure valve.

The additional refrigerant to be charged can be

calculated using the following formula:

For R290 refrigerant unit, the total amount of refrigerant to be charged is no more than:

387g(<=9000Btu/h), 447g(>9000Btu/h and <=12000Btu/h), 547g(>12000Btu/h and <=18000Btu/h),

632g(>18000Btu/h and <=24000Btu/h).

Connective Pipe

Length (m)

Air Purging

Method Additional Refrigerant

< Standard pipe length Vacuum Pump N/A

> Standard pipe

length

Vacuum Pump

Liquid Side: Ø 6.35 (ø 0.25”)

R32:

(Pipe length – standard length) x 12g/m

(Pipe length – standard length) x 0.13oZ/ft

R290: R290:

(Pipe length – standard length) x 10g/m

(Pipe length – standard length) x 0.10oZ/ft

Liquid Side: Ø 9.52 (ø 0.375”)

R32:

(Pipe length – standard length) x 24g/m

(Pipe length – standard length) x 0.26oZ/ft

(Pipe length – standard length) x 18g/m

(Pipe length – standard length) x 0.19oZ/ft

R410A: R410A:

(Pipe length – standard length) x 15g/m

(Pipe length – standard length) x 0.16oZ/ft (Pipe length – standard length) x 30g/m

(Pipe length – standard length) x 0.32oZ/ft

 Page 31 

Electrical and Gas Leak Checks 8

Electrical Safety Checks

After installation, conﬁrm that all electrical wiring

is installed in accordance with local and national

regulations, and according to the Installation

Manual.

BEFORE TEST RUN

Check Grounding Work

Measure grounding resistance by visual detection

and with grounding resistance tester. Grounding

resistance must be less than 0.1Ω.

Note: This may not be required for some

locations in the US.

DURING TEST RUN

Check for Electrical Leakage

During the Test Run, use an electroprobe and

multimeter to perform a comprehensive electrical

leakage test.

If electrical leakage is detected, turn off the unit

immediately and call a licensed electrician to ﬁnd

and resolve the cause of the leakage.

Note: This may not be required for some

locations in the US.

Gas Leak Checks

There are two different methods to check for gas

leaks.

Soap and Water Method

Using a soft brush, apply soapy water or liquid

detergent to all pipe connection points on the

indoor unit and outdoor unit. The presence of

bubbles indicates a leak.

Leak Detector Method

If using leak detector, refer to the device’s

operation manual for proper usage instructions.

AFTER PERFORMING GAS LEAK CHECKS

After conﬁrming that the all pipe connection

points DO NOT leak, replace the valve cover

on the outside unit.

WARNING – RISK OF

ELECTRIC SHOCK

ALL WIRING MUST COMPLY WITH LOCAL

AND NATIONAL ELECTRICAL CODES,

AND MUST BE INSTALLED BY A

LICENSED ELECTRICIAN.

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