Air Evacuation; Preparations And Precautions; Evacuation Instructions - Rinnai P Series Installation Manual

AIR EVACUATION

Air Evacuation

Preparations and Precautions

Air Evacuation
Preparations and Precautions
Air and foreign matter in the refrigerant circuit can
Preparations and Precautions
cause abnormal rises in pressure, which can damage
Air and foreign matter in the refrigerant circuit can
the air conditioner, reduce its efficiency, and cause
cause abnormal rises in pressure, which can damage
injury. Use a vacuum pump and manifold gauge to
the air conditioner, reduce its efficiency, and cause
evacuate the refrigerant circuit, removing any
injury. Use a vacuum pump and manifold gauge to
non-condensable gas and moisture from the system.
evacuate the refrigerant circuit, removing any
Evacuation should be performed upon initial
non-condensable gas and moisture from the system.
installation and when unit is relocated.
Evacuation should be performed upon initial
BEFORE PERFORMING EVACUATION
installation and when unit is relocated.
Check to make sure the connective pipes

BEFORE PERFORMING EVACUATION
between the indoor and outdoor units
Check to make sure the connective pipes

are connected properly .
between the indoor and outdoor units
Check to make sure all wiring is connected

are connected properly .
properly.
Check to make sure all wiring is connected


Evacuation Instructions

Evacuation Instructions
properly.
Connect the charge hose of the manifold
1.
Evacuation Instructions
gauge to service port on the outdoor unit's
Connect the charge hose of the manifold
1.
low pressure valve.
gauge to service port on the outdoor unit's
2. Connect another charge hose from the
low pressure valve.
manifold gauge to the vacuum pump.
2. Connect another charge hose from the
3.
Open the Low Pressure side of the manifold
manifold gauge to the vacuum pump.
gauge. Keep the High Pressure side closed.
3.
Open the Low Pressure side of the manifold
4.
Turn on the vacuum pump to evacuate the
gauge. Keep the High Pressure side closed.
system.
4.
Turn on the vacuum pump to evacuate the
5.
Run the vacuum for at least 15 minutes, or
system.
until the Compound Meter reads -76cmHG
5.
Run the vacuum for at least 15 minutes, or
5
(-10 Pa).
until the Compound Meter reads -76cmHG
Manifold Gauge
5
(-10 Pa).
Compound
gauge
Manifold Gauge
-76cmHg
Compound
gauge
Low pressure
valve
-76cmHg
Pressure hose /
Charge hose
Low pressure
valve
Pressure hose /
Charge hose
Low pressure valve
6.
Close the Low Pressure side of the manifold
Low pressure valve
gauge, and turn off the vacuum pump.
6.
Close the Low Pressure side of the manifold
Wait for 5 minutes, then check that there
7.
gauge, and turn off the vacuum pump.
has been no change in system pressure.
Wait for 5 minutes, then check that there
7.
has been no change in system pressure.
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Rinnai
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Pressure gauge
Pressure gauge
High pressure
valve
Charge hose
High pressure
acuum
V
valve
pum p
Charge hose
acuum
V
pum p
If there is a change in system pressure, refer
8.
to Gas Leak Check section for information
If there is a change in system pressure, refer
8. on how to check for leaks. If there is no
to Gas Leak Check section for information
change in system pressure, unscrew the cap
on how to check for leaks. If there is no
from the packed valve (high pressure valve).
9.
change in system pressure, unscrew the cap
Insert hexagonal wrench into the packed valve
from the packed valve (high pressure valve).
9.
(high pressure valve) and open the valve by
9.
Insert hexagonal wrench into the packed valve
turning the wrench in a 1/4 counterclockwise
(high pressure valve) and open the valve by
turn. Listen for gas to exit the system, then
turning the wrench in a 1/4 counterclockwise
close the valve after 5 seconds.
turn. Listen for gas to exit the system, then
Watch the Pressure Gauge for one minute
10.
close the valve after 5 seconds.
to make sure that there is no change in
Watch the Pressure Gauge for one minute
10.
pressure. The Pressure Gauge should read
to make sure that there is no change in
slightly higher than atmospheric pressure.
pressure. The Pressure Gauge should read
Remove the charge hose from the service port.
11.
slightly higher than atmospheric pressure.
Remove the charge hose from the service port.
11.
valve body
valve stem
Using hexagonal wrench, fully open both the
12.
valve body
valve stem
high pressure and low pressure valves.
Using hexagonal wrench, fully open both the
12.
Tighten valve caps on all three valves (service
13.
high pressure and low pressure valves.
port, high pressure, low pressure) by hand.
Tighten valve caps on all three valves (service
13.
You may tighten it further using a torque
port, high pressure, low pressure) by hand.
wrench if needed.
You may tighten it further using a torque
wrench if needed.
OPEN VALVE STEMS GENTLY
When opening valve stems, turn the hexagonal
OPEN VALVE STEMS GENTLY
wrench until it hits against the stopper. Do not
try to force the valve to open further.
When opening valve stems, turn the hexagonal
wrench until it hits against the stopper. Do not
try to force the valve to open further.
26
Flare nut
Flare nut
Cap
Cap
Split AC IM