User manual LG ARNU28GTPA2

[. . . ] For installation of indoor units, follow the Installation Manual supplied with the indoor unit. Moreover, as this installation manual includes the important articles concerning the "Machinery" Directive (Directive 2006/42/ EC), please read through the manual and make sure you understand it. After installation, give this Installation Manual, the Owner's Manual and the Installation Manual supplied with the indoor unit to the customer and tell the customer to keep them safe. Prepare an exclusive power source for indoor units, independent to that for outdoor units. [. . . ] Install the outdoor units in order of their capacity codes: A (header unit) B C D When connecting gas pipes to indoor units, use Y-shaped branching joints to keep pipes level. When piping to outdoor units using Outdoor unit connection piping kits, intersect the pipes to the outdoor unit and those to indoor units at a right angle as shown in figure 1 on "6. Do not connect them as in figure 2 on "6. INSTALLATION OF THE OUTDOOR UNIT". · Be sure to apply pressure from the service ports of the packed valves (or ball valves) at the liquid side, gas side and balance pipe side. · An airtight test can only be performed at the service ports at the liquid side, gas side and balance pipe side on header unit. · Close the valves fully at the gas side, liquid side and balance pipe side. As there is a possibility that the nitrogen gas will enter into the cycle of outdoor units, re-tighten the valve rods at the liquid side and balance pipe side before applying pressure. (When using MAP140 or MAP160, you do not have to re-tighten the liquid side valve rod as their valves at the liquid side are ball valves. ) · For each refrigerant line, apply pressure gradually in steps at the liquid side, gas side and balance pipe side. Be sure to apply pressure at the gas side, liquid side, and balance pipe side. WARNING Never use oxygen, flammable gases, or noxious gases in an airtight test. Allowable length and allowable height difference of refrigerant piping Item Total extension of pipe (liquid pipe, real length) Less than 96kW 96kW or more Less than 34HP or less 34HP or more Equivalent length Real length Equivalent length Real length Allowable value 300m 500m 235m 190m 120m (*2) 100m (*2) 90m (*3) 25m 10m 30m 50m 70m (*4) 40m (*5) 40m 5m Pipes LA + LB + La + Lb + Lc + Ld + L1 + L2 + L3 + L4 + L5 + L6 + L7 + a + b + c + d + e + f + g + h + i + j LA + LB + Ld + L1 + L3 + L4 + L5 + L6 + j Connected to indoor unit Main piping Gas side valve fully closed Low pressure High pressure gauge gauge Header outdoor unit Service port Brazed Copper pipe Fully closed VL VH Gauge manifold Farthest piping length L (*1) Main piping length Pipe length Packed valve details L1 L3 + L4 + L5 + L6 + j LA + LB + Ld (LA + Lb, LA + LB + Lc) La, Lb, Lc, Ld a, b, c, d, e, f, g, h, i, j L2, L3, L4, L5, L6, L7 ­ ­ ­ ­ Balance service port To gauge manifold Liquid-side service port Liquid-side valve To outdoor unit To outdoor unit Gas-side valve Reducing valve Farthest equivalent piping length from the first branch Li (*1) Farthest equivalent piping length between outdoor units L0 (*1) Maximum equivalent piping length of pipes connected to outdoor units Maximum real length of pipes connected to indoor units Maximum equivalent length between branching sections Height between outdoor and indoor units H1 Height between indoor units H2 Height between indoor units H3 Upper outdoor units Lower outdoor units To outdoor unit Service port Gas-side service port Piping at site Liquid valve fully closed Fully closed Copper pipe Nitrogen gas Balance valve Piping at site Piping at site Service port Balanced pipe side valve fully closed Height difference Connected to other follower units *1: *2: *3: *4: *5: Farthest outdoor unit from the first branch: (D), farthest indoor unit: (j) If the total capacity of outdoor units is 46HP or more, make the equivalent length 70m (real length 50m) or less. Make the difference 65m or less if the height difference between outdoor and indoor units (H1) is more than 3m. Make the difference 50m or less if the height difference between indoor units (H2) is more than 3m. · If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and gas sides, operate the air conditioner in COOL mode, and then charge refrigerant into service port at the gas side. In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant. · The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually. EN 31-EN ­ 16 ­ 32-EN 33-EN ­ 17 ­ SMMS-i Installation Manual SMMS-i Installation Manual 34-EN Full opening of the valve Open the valves of the outdoor unit fully. MAP080 MAP100 MAP120 Packed valve Using a 4mm-hexagonal wrench, fully open the valve rods. MAP140 MAP160 Ball valve Using a flathead screwdriver, turn it counterclockwise by 90° until it hits the stopper. (Full open) Service port Position of screwdriver slot F-GAS label This product contains fluorinated greenhouse gases covered by the Kyoto Protocol · Chemical Name of Gas · Global Warming Potential (GWP) of Gas R410A 1975 CAUTION 1. Stick the enclosed refrigerant label adjacent to the charging and/or recovering location. Clearly write the charged refrigerant quantity on the refrigerant label using indelible ink. Then, place the included transparent protective sheet over the label to prevent the writing from rubbing off. Prevent emission of the contained fluorinated greenhouse gas. Ensure that the fluorinated greenhouse gas is never vented to the atmosphere during installation, service or disposal. [. . . ] · The unit does not perform test run for 3 minutes after turning the power on or stopping running. 7-segment display [A] [C ] [H ] [B] -C -H [ [ ] ] Stop operation 1 Set the rotary switches on the interface P. C. board of the header unit back: SW01 to [1], SW02 to [1] and SW03 to [1]. 7-segment display [A] [U1] [B] [ ] EN 59-EN ­ 30 ­ 60-EN 61-EN ­ 31 ­ SMMS-i Installation Manual SMMS-i Installation Manual 62-EN 11TROUBLESHOOTING In addition to the CODE No. on the remote controller of an indoor unit, you can diagnose failure type of an outdoor unit by checking the 7-segment display on the interface P. C. Set every dip switch to OFF after checking. Check code Indication on 7-segment display on the outdoor unit Auxiliary code F15 F16 F22 D600 D601 D602 D603 D604 Check code name Outdoor temp. [. . . ]