Summary of Contents for Carrier 38VT 188CTST Series
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1141101001 R410A AIR CONDITIONER (MULTI TYPE) Outdoor Unit For commercial use Model name: สํ า หรั บ ใช ง านเชิ ง พาณิ ช ย <Cooling only Model> 38VT____1 88CTST 38VT____1 88CTSTZ Installation Manual Notice: is committed to continuously improving its products to ensure the highest quality and reliability standards, and to meet local regulations and market requirements.
– 1 – Thank you for purchasing this Carrier air conditioner. Please read this Installation Manual carefully before installing the Air Conditioner. This Installation Manual describes the installation method of the outdoor unit. For installation of indoor units, follow the •...
You may fall or the objects may fall off of the outdoor unit and • If using separately sold products, make sure to use Carrier result in injury. specifi ed products only. Using unspecifi ed products may cause •...
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– 3 – Selection of installation location Installation • If you install the unit in a small room, take appropriate measures • Follow the instructions in the Installation Manual to install the air to prevent the refrigerant from exceeding the limit concentration conditioner.
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• After the installation work, confi rm that refrigerant gas does • Use wiring that meets the specifi cations in the Installation not leak. If refrigerant gas leaks into the room and fl ows near Manual and the stipulations in the local regulations and laws. a fi...
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– 5 – Test run • If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF • Before operating the air conditioner after having completed the position, and contact a qualifi...
Accessory parts WARNING • After installation work, make sure below before operation. Part name Q’ty Shape Usage - Connection pipes are connected properly and no leakage. Owner’s Manual – (Be sure to hand over to customers) - Packed valves are fully open. Installation Manual –...
– 7 – Installation of R410A refrigerant air Selection of installation place conditioner Upon customer’s approval, install the air conditioner in a place which satis es the following conditions: • Place where it can be installed horizontally. This air conditioner adopts the R410A refrigerant which does not deplete the ozone layer. •...
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Installation space Model Name Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 (Standard type) 38VT020188 38VT020188 Leave space necessary for running, installation and servicing. 38VT022188 38VT022188 Air discharge 38VT024188 38VT024188 38VT026188 38VT026188 38VT2811 38VT0141 38VT0141 38VT3011 38VT0181 38VT0121 38VT3211 38VT0201 38VT0121...
– 9 – Carrying in the outdoor unit Weight centre of an outdoor unit ■ CAUTION ◆ Weight center of an outdoor unit Handle the outdoor unit carefully, observing the following items. When using a forklift truck or other machinery for loading/unloading in transportation, insert the fork of the forklift truck into the rectangular holes for handling as shown below.
Installation of the outdoor unit 2. When drawing out the refrigerant pipe from the underside, set the height of the stand to 500 mm or more. Incorrect Correct WARNING Be sure to install the outdoor unit in a place able to bear its weight. Perform specified installation work to protect against strong wind and earthquakes.
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– 11 – 5. Be careful of the connecting arrangement of the header unit and follower units. Set the outdoor units in order of When drawing pipes downward capacity from the one with the largest capacity. (A (Header unit) [Vertical connection of branch units] •...
Refrigerant piping REQUIREMENT For a welding work of the refrigerant pipes, be sure to use nitrogen gas in order to prevent oxidation of the inside of the pipes; otherwise clogging of the refrigerating cycle due to oxidized scale may occur. WARNING Use clean and new pipes for the refrigerant pipes and perform piping work so that water or dust does not contaminate the refrigerant.
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– 13 – (Unit: mm) Pipe diameter Type Connected section Liquid External size Internal size Standard outer dia. Cut the L-shaped pipe at the horizontal Cut the L-shape pipe at the vertical straight Min. depth of Min. thickness of connected straight section, then braze the socket and section, then braze the socket and pipe Standard outer dia.
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Table 2-1 [Diversity 135%] Capacity code of indoor and outdoor units Capacity code Max. No. Total For the indoor unit, the capacity code is decided at each capacity rank. (Table 1) Model Name Diversity of indoor capacity of Equivalent Equivalent The capacity codes of the outdoor units are decided at each capacity rank.
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– 15 – Capacity code Capacity code Max. No. Total Max. No. Total Model Name Diversity Diversity Model Name of indoor capacity of of indoor capacity of Equivalent Equivalent Equivalent Equivalent [Standard] [Standard] units indoor units units indoor units to HP to capacity to HP to capacity...
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Header Follower Follower Follower Follower Piping parts Name Selection of pipe size Remarks unit A unit B unit C unit D unit E Pipe size for connecting piping between outdoor units Total capacity codes of Outdoor unit the total outdoor units at the downstream side Gas side Liquid side...
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– 17 – Piping parts Name Selection of pipe size Remarks Piping parts Name Selection of pipe size Remarks Selection of branching section (Branching header) Pipe size between branching sections Total capacity codes of indoor units at Total capacity code of indoor units Model name downstream side Equivalent to capacity (HP)
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Allowable length of refrigerant pipes and allowable height Cautions for installation Set the outdoor unit first connected to the bridging pipe to the indoor units as the header unit. difference between units Install the outdoor units in order of their capacity codes: A (header unit) When connecting gas pipes to indoor units, use Y-shaped branching joints to keep pipes level.
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– 19 – Able to detect a serious leakage Airtightness test 1. Apply pressure 0.3 MPa (3.0 kg/cm G) for 5 minutes or more. 2. Apply pressure 1.5 MPa (15 kg/cm G) for 5 minutes or more. After the refrigerant piping has been nished, execute an airtight test. For an airtight test, connect a nitrogen gas canister as shown in the gure on this page and apply pressure.
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Vacuum drying Adding refrigerant After finishing vacuuming, exchange the vacuum pump with a refrigerant canister and start additional charging of Be sure to perform vacuuming from both liquid and gas sides. refrigerant. Be sure to use a vacuum pump equipped with the counter-flow prevention function so that oil in the pump will not flow back into piping for air conditioners.
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– 21 – Table 3-1 System HP Combionation HP Conpensation by System HP (kg) Corrective amount of refrigerant varies according to indoor unit capacity rank. Indoor unit Capacity 007 008 009 010 012 014 015 017 018 020 024 027 030 036 048 056 072 096 112 128 144 192 rank Capacity code 0.8 0.9...
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Full opening of the valve Heat insulation for pipe Apply heat insulation of pipe separately at the liquid, gas, and balance sides. Open the valves of the outdoor unit fully. Be sure to use thermal insulator resistant up to 120°C or higher for pipes at the gas side. Packed valve Using a 5 mm-hexagonal wrench, turn the valve shaft counterclockwise fully to open it.
– 23 – Electric wiring Power wiring selection Single unit WARNING Unit 1 Unit 3 The appliance shall be installed in accordance with national wiring regulations. Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire. ELCB ELCB ELCB...
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Combination of outdoor unit MCA: Minimum Circuit Amps MOCP: Maximum Overcurrent Protection (Amps) Model Name Phase supply Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 MOCP MOCP MOCP MOCP MOCP 38VT2811 38V0T0141 38VT0141 38VT3011 38VT0181 38VT0121 38VT3211 38VT0201 38VT0121 38VT3411 38VT0221...
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– 25 – Specifications for communication wiring Design of communication wiring Summary of communication wiring Header outdoor Follower outdoor Central control Uv Uv Uh Uh SHIELD Uc Uc SHIELD Uv Uv Uh Uh SHIELD Uc Uc SHIELD device U3 U4 Control wiring between outdoor units (Shield wire) Control wiring between indoor and outdoor units (Shield wire) Control wiring between indoor units (Shield wire)
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Table-1 Uv line and Uc line REQUIREMENT y t i Using the same wire type and size, wire each line below. If the different wire types and sizes are mixed in each line, communication trouble is caused. : ² Uv line (wiring between indoor and outdoor units) and Uc line (wiring between outdoor and outdoor units) in U-series.
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– 27 – ◆ Reuse Existing Communication Wiring Flowchart Wiring Diagram Please refer to diagram below when connecting the communication wiring. START Header outdoor Follower outdoor Is the communication wiring condition out of damage, crack, deteriorate, etc? Can the communication wiring be reused safely? (Check whether the communication wiring line and ground is connected or not) Central control...
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<U series> Central control device U3 U4 <U series> <Other than U series> U3 U4 U3 U4 U3 U4 U3 U4 U3 U4 U3 U4 Outdoor unit Outdoor unit (SMMS-i) U5 U6 U5 U6 U5 U6 U5 U6 U5 U6 U5 U6 (SMMS-7 ) (MiNi SMMS)
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– 29 – Power supply wire connection Connection of power supply wires and communication wires 1. Insert the power supply wires from lower right of the electrical control box and connect them to the power Remove knockouts on the piping / wiring panel on the front of the unit and the panel on the bottom to get the terminal blocks and the earth line to the earth screw, and then fix each of the five wires with each cord clamp power and communication wires through the holes.
Address setting Screw size and tightening torque Tightening torque Screw size On this unit, it is required to set the addresses of the indoor units before starting air conditioning. Set the addresses following the steps below. CAUTION Communication wire connection This is not turning on the power 1.
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– 31 – 2. Follow the steps below to set the DIP switch on the header (Example) Controlling 2 or more refrigerant lines as a group (*) outdoor unit interface P.C. board. Outdoor Outdoor 2-1.Header outdoor unit setting Turn on DIP switch 1 of SW101 on the header outdoor unit interface P.C. boards. And, turn on DIP switch 2 of SW100.
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(2) Turn on DIP switch 1 of SW100 on the header outdoor unit interface P.C. board of the lowest Switch settings for a line (system) address on the interface P.C. board on the outdoor unit : switch ON, : switch OFF) system address number.
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– 33 – Address set up REQUIREMENT Automatic address set up When 2 or more refrigerant lines are controlled as a group, be sure to turn on all the indoor units in the group before setting addresses. Open the access door cover and follow the steps below to set If you set the unit addresses of each line separately, each line’s header indoor unit is set separately.
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Changing the indoor unit address using a remote controller NOTE 1. The Code No. [E04] (Indoor / outdoor communication trouble) will appear if line (system) addresses are To change an indoor unit address using a wired remote controller. mistakenly set. 40VCW61-7-CEE 2.
– 35 – Communication setting Interface P.C. board on the header outdoor unit If all outdoor units, indoor units, remote controllers are U series models, you can change to TU2C-Link communication by following the steps below. (The factory default setting is TCC-Link communication) 3,5,6,8,9,10 CAUTION Be sure to complete the electric wiring before setting the addresses.
Automatic refrigerant charge Flowchart of automatic refrigerant charge ■ Before charge refrigerant automatically, knowing the size and length of the refrigerant pipe will determine how the This unit only use R410A refrigerant. Charging with an unsuitable substance or other refrigerant may cause accident. refrigerant is charged.
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– 37 – Manual charge Table 2 • Fully open the valves of the outdoor unit at liquid and gas sides, operate the air conditioner in COOL mode, Liquid pipe dia, (mm) 12.7 15.9 19.1 22.2 25.4 • Charge refrigerant into service port at the gas side. In this time, choke the refrigerant slightly by operating the Additional refrigerant amount per 1 m liquid pipe (kg/m) 0.025 0.055...
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Rotary switch 7-segment Confirmation procedure SW01 SW02 SW03 display[A] display[B] When automatic refrigerant is finished, then 7-segment [B] indicate [C . E] [E n d] ↓ [End] and [passed time]. [passed time] Turn back the rotary switch to initial setting. [U .
– 39 – Applicable control settings Interface P.C. board of header unit When connecting an optional P.C. board (sold separately) for outdoor units, it is necessary to change the settings of the outdoor unit. 3,5,7 All are set to [Standard (factory setting)] at the time of shipment, so change the settings of the outdoor unit as necessary.
Test run When executing a test run using Press and hold SW04 for more than 10 the interface P.C. board on the seconds. Before test run Wired remote controller outdoor unit 7-segment display Be sure to stop the air conditioner before making You can execute a test run by operating switches Confirm that the valve of the refrigerate pipe of the settings.
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– 41 – <Collective trial> Interface P.C. board Start operation Set the rotary switches on the interface P.C. board of the header outdoor unit as below. When in “COOL” mode: SW01=[2], SW02=[5], SW03=[1]. When in “FAN” mode: SW01=[2], SW02=[9], SW03=[1]. Press switch 7-segment display 7-segment...
Troubleshooting Check code Indication on 7-segment display on the outdoor unit Check code name In addition to the CODE No. on the remote controller of an indoor unit, you can diagnose failure type of an outdoor Auxiliary code unit by checking the 7-segment display on the interface P.C. board. 01: TS1 sensor Use the function for various checks.
– 43 – Machine card and logbookcscs Check code Indication on 7-segment display on the outdoor unit Check code name Machine card Auxiliary code 1 : Compressor 1 side 2 : Compressor 2 side After test run, fill the items on the machine card and paste the card on an accessible place on the product securely Heat sink overheating trouble 00: Compressor 1 side or Compressor 2 side before delivery to the customer.
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Important WARNINGS ON REFRIGERANT LEAKAGE NOTE 2 The standards for minimum room volume are as follows. Check of Concentration Limit 1) No partition (shaded portion) The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit.
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B C D LA + LB + LC + La + Lb + Lc + Ld + Le + L1 + L2 + L3 + L4 + L5 + L6 + L7 + a + b + c + d + e + f + g + h + i + j (*6) LA + LB + LC + Le + L1 + L3 + L4 + L5 (*1)
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– 63 – i t r i t h g ) s s 3 . 0 0 . 3 / g k 5 . 1 5 1 ( / g k 5 1 . 3 . 2 / g k 0.01 MPa (0.1 kg/cm C °...