SINGLE ZONE VERTICAL AIR HANDLING UNIT INSTALLATION MANUAL LV181HV4 (18,000 Btu/h) LV241HV4 (24,000 Btu/h) LV361HV4 (36,000 Btu/h) Single-Zone Vertical Air Handling Unit System 18,000 - 48,000 Btu/h LV420HV (42,000 Btu/h) LV480HV (48,000 Btu/h)
Always follow local codes when selecting and installing copper pipe and piping system components. Approved piping for use with LG Single Zone products will be marked “R410 RATED” along the length of the pipe. Piping wall thickness must meet local code requirements and be approved for a maximum operating pressure of 551 psi. When bending piping, try to keep the number of bends to a minimum, and use the largest radii possible to reduce the equivalent length of installed piping;...
Failure to do so may cause significant performance degradation. Proper leak checks must be performed. Using isolation valves does not automatically void any LG product warranty, however, a limited warranty may be voided in whole or part must any field supplied accessory fail in any way that causes product failure.
Pipe Sleeves at Penetrations LG requires that all pipe penetrations through walls, floors, and pipes buried underground be properly insulated and routed through an appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the sleeve.
Wired Controller Connections Controllers can connect to the indoor unit in one of two different ways. 1. LG Wired Remote Extension Cable with Molex plug (PZCWRC1; sold separately) that connects to the CN-REMO terminal on the indoor unit PCB. 2. Field-supplied controller cable that connects to the indoor unit terminal block (must be at least UL2547 or UL1007, and at least FT-6 rated if local electric and building codes require plenum cable usage).
20001747 ISO 9001: 2008 LG ELECTRONICS INC. For further technical materials such as submittals, engineering manuals, service manuals, and catalogs, visit www.lghvac.com. LG Electronics, U.S.A., Inc. Commercial Air Conditioning Division 4300 North Point Parkway IM_SZ_VAHU_12_19 Alpharetta, Georgia 30022 Supercedes: IM_SZ_VAHU_12_17...