5MXS48TVJU Installation Manual

7 English
How to Use Reducers
• Use the reducers supplied with the unit as described below.
(1) Connecting a pipe of φ1/2 inch (12.7mm) to a gas pipe connection port for φ5/8 inch (15.9mm) :
(2) Connecting a pipe of φ3/8 inch (9.5mm) to a gas pipe connection port for φ5/8 inch (15.9mm) :
(3) Connecting a pipe of φ3/8 inch (9.5mm) to a gas pipe connection port for φ1/2 inch (12.7mm) :
Gasket (1) Gasket (2) Reduce and gasket
No.1
φ5/8”
φ1/2”
No. 1
No. 3
Flare nut (for φ5/8 inch (15.9mm))
Inter-unit piping
Connection port of outdoor unit
Connection port of outdoor unit
Be sure to attach
the gasket.
No. 4
No. 2
Flare nut (for φ1/2 inch (12.7mm))
Be sure to attach the gasket.
No.2
φ1/2”
φ3/8”
No.3
φ5/8”
φ1/2”
No.4
φ1/2”
φ3/8”
No.5
φ5/8”
φ3/8”
No.6
φ5/8”
φ3/8”
Connection port of outdoor unit
No. 5
No. 6
Flare nut (for φ3/8 inch (9.5mm))
Be sure to attach the gasket.
• When using the reducer packing shown above, be careful not to overtighten the nut, or the smaller pipe may become
damaged. (Apply about 2/3 to 3/3 the normal torque.)
• Applyacoatofrefrigerationoiltothethreadedconnectionportoftheoutdoorunitwherethearenutcomesin.
• Useanappropriatewrenchtoavoiddamagingtheconnectionthreadbyovertighteningthearenut.
Piping size Flare nut tightening torque
O.D. φ3/8 inch (9.5mm) 24-1/8–29-1/2ft•Ibf(32.7-39.9N•m)
O.D. φ1/2 inch (12.7mm) 36-1/2–44-1/2ft•lbf(49.5-60.3N•m)
O.D. φ5/8 inch (15.9mm) 45-5/8–55-5/8ft•lbf(61.8-75.4N•m)
01_EN_3P537039-1.indd 7 9/12/2018 7:37:43 PM