Rpf & Rpfi - Floor Type & Floor Concealed Type; Ch Unit - Hitachi FSG1 Series Technical Catalogue

13.4.6. RPF & RPFI – FLOOR TYPE & FLOOR
CONCEALED TYPE
Piping Connection of RPF

13.4.7. CH UNIT

§ Piping Connection
Position of piping connection is shown in Chapter 11.9,
page 11-3.
Connect the accessory strainers and reducers as shown
in next figure.
Reducer A
To Indoor
Unit
Reducer B
Strainer B
Part
Connection
Name
Connect to the gas
Strainer A
(high) piping
Connect to the gas
Strainer B
piping
Connect to the liquid
piping, in case of
Reducer A
connecting a Æ6.35
pipe
Connect to the gas
piping, in case of
Reducer B
connecting a Æ12.7
pipe
REFRIGERANT PIPING AND REFRIGERANT CHARGE
RPF(I)-1.0
RPF(I)-1.5
RPF(I)-2.0
RPF(I)-2.5
Strainer A
View from Top
Field-Supplied
Piping
CH- CH- CH-
4.0GE 6.5GE 11.5G
Æ12.7 Æ15.88 Æ19.05
Æ15.88 Æ19.05 Æ28.6
With Without Without
With Without Without
Piping Connection of RPFI
Gas Piping Liquid Piping
Æ 12.7 (1/2)
Æ 6.35 (1/4)
Æ 15.88 (5/8)
Æ 9.53 (3/8)
After connecting the refrigerant piping, seal the
refrigerant pipes by using the factory-supplied
insulation materials as shown below.
CH-4.0GE Only
To Indoor
Unit
To Outdoor
Unit
Insulation:
( Æ 38iD) CH-4.0/6.5GE
( Æ 62iD) CH-11.5G
CH Unit
Units mm (in
Insulation ( Æ 26iD)
Insulation ( Æ 26iD)
Insulation:
Insulation:
( Æ 26iD) - CH-4.0/6.5GE
( Æ 38iD) CH-4.0/6.5GE
( Æ 38iD) - CH-11.5G
( Æ 62iD) CH-11.5G
Insulation
Cord band
Reducer
Strainer
13
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To
Outdoor
Unit