LS300 – LINE SET TAPE (1.88″ x 180′)

Shurtape LS 300 UV-resistant line set tape. Built from OPP polypropylene film with acrylic adhesive so it will not delaminate, it conforms to the curves of a line set and holds up outdoors from -35 F to 210 F. Roll size per our stock record is 1.88 in. x 180 ft.

Specifications taken from the manufacturer’s published product literature.

Specs

• BrandShurtape
• ProductLS 300 Line Set Tape
• Roll size1.88 in. x 180 ft
• BackingOPP polypropylene film
• AdhesiveAcrylic
• Temperature range-35 F to 210 F
• ColourBlack
• FeatureUV resistant

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• 18334
• 1507

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.

How do I buy a line set for a mini split?

By line diameter and length, not by equipment model number. Look at the two stub-outs on the outdoor unit. Most 9k and 12k heads are 1/4 by 3/8, and larger heads move to 1/4 by 1/2 or 3/8 by 5/8. Measure the run including vertical rise and the bends, and buy a little long rather than a little short. Multi-zone systems size each branch on its own, so measure every run separately.

How tight should the flare nuts be?

Use a torque wrench. Common figures are roughly 13 to 18 ft-lbs on 1/4 inch, 25 to 30 on 3/8, and 36 to 46 on 1/2, but the install manual for your unit is the authority. A flare nut torqued by feel is the single most common leak on a mini split. Loose leaks, and overtightened crushes the flare seat and leaks too, except now you get to cut it off and re-flare.

How do I make a flare that will not leak?

Deburr the cut with the tube pointed down so shavings drop out, because a burr guarantees a leak. Slide the flare nut on before you flare, which everyone forgets exactly once. Use a tool with a depth stop, and for R-410A or A2L work an eccentric cone flaring tool beats a plain screw-down block. A drop of Nylog on the flare face and the threads helps it seat. Then torque it.

What is an anti-blowback adapter for?

Mini split service ports are 5/16 inch, so you need a 5/16 to 1/4 adapter to land a hose. The anti-blowback style has a shut-off built in, so when you break the hose loose you do not take a face full of refrigerant and oil off the depressor pin. Get the 90 degree version when the port sits tight against the cabinet.