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Summary of Contents for ComfortStar LUC7 Series
- Page 1 INSTALLATION AND OPERATION MANUAL High Efficiency Air Handlers 1.5-5 Tons Capacity R454B LUC7 SERIES 匾噩匾量壁 Please read this manual carefully and keep it f o r future reference. All the pictures in this manual are f o r illustrations purpose only.
- Page 2 ． OGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMA- � � l �� TION These instructions are intended as an aid to qualified licensed service personnel for proper installation, adjustment and operation of this unit. Read these instructions thoroughly before attempting installation or operation.Failure to follow these instructions may esult in improper installation, adjustment, service, or maintenance, which could 「...
- Page 3 CONTENTS 1 S AF ETY • 1.1 S a f e ty S i g n s • 1.2 S a f e ty P r ec a uh o n s 2 A B O UT THE P R O D UCT •...
- Page 4 This document is customer property and is to emain with this unit. 「 These instructions do not cover all the different variations, nor do they provide for every possible contingency to be met in connection with installation. All phases of this installation must comply with national state and local codes. If additional information is required, please contact your local distributor.
- Page 5 .＾， ｀飞 ； 一 1.2 Safety Precautions 凶业诅 PROPOSITION 65: This appliance contains ．A正 fiberglass insulation. Respi able particles of 「 fiberglass are known to The State of California to Disconnect all power to unit before installing or cause cancer. servicing.
- Page 6 ··,门7mme- ` tC- -,“'｀`汕|抡 Only use this unit in a well-ventilated area and When repairing the refrigerating system, comply ensu e unit's airflow inlet and outlet would not be with the following precautions prior to conducting 「 impeded by obstructions. Do not use this unit in work on the system: the following locations: - shall be undertaken according to controlled...
- Page 7 Leak detection fluids a e also suitable for use Refrigerating pipe or components are installed in 「 with most efrigerants but the use of detergents a position where they are unlikely to be exposed 「 containing chlorine shall be avoided as the to any substances which may corrode refrigerant chlorine may react with the efrigerant and...
- Page 8 Prior to recharging the system, it shall be When transferring refrige ant into cylinders, 「 pressure-tested with the appropriate pu ging ensu e that only appropriate refrigerant recovery 「 「 gas. The system shall be leak-tested on comple cylinders are employed. Ensure that the correct tion of charging but prior to commissioning.
- Page 9 training on the meaning of appropriate safety If electrical appliances are disposed of in landfills signs and the actions that need to be taken in or dumps, hazardous substances can leak into connection with these signs. the groundwater and get into the food chain, harming your health and well-being.
- Page 10 2 ABOUT THE PRODUCT 2.1 Unit Dimensions Note: 25" clearance is required in the front of the unit for filter and coil maintenance. Electrical connections S up ly ar may exit top or right side High voltage connection 7/8", 1-3/8", 1-3/4" dia knock-outs e group connecting to thermostat 「...
- Page 11 2.2 Parts Introduction ＠ ＠ ＠ ＠ ＠ Fig.2-2 ；二 笣） ＠ ＠ ＠ �oard DC Motor Blower I AL-Evaporator I R454B-T双R454B R efrigerant Sensor Table 2-2 2.3 Attached Fittings 。 。 Name Name Appearance Quan tity Appearance Quantity Indoor unit operation 品...
- Page 12 2.4 Refrigerant Sensor 3 INSTALLATION R454B refrigerant leakage sensor is configured f o r the 3.1 Installation Instructions indoor unit. To meet different installation scenarios, the refrigerant sensor has two installation positions. The The unit can be positioned f o r bottom return air in the factory set of the refrigerant sensor is applied to the upflow position, left and right return in the horizontal vertical upflow and horizontal right.
- Page 13 When the unit is installed in a hot and humid place, If the humidity inside the installation space might exceed 86 °F and RH 80 %, it is ecommended to insulate the 「 cabinet exterior. Use glass wool or polyethylene foam as insulation so that the thickness is more than 2 inches and fits inside the installation space opening.
- Page 14 一唱冲)i- If installed vertically downflow in a hot and humid place that might exceed 86 °F and RH 80 %,such as in the basement, the extra drain pan,sponge and sealant shall be installed as shown in Fig .3-7. Sealant must meet the fire rating requirements of 5VA.
- Page 15 ． 3.2 Vertical Upflow ． Vertical Upflow configuration is the factory set on all models. See Fig.3-8. If return air is to be ducted, install duct flush with floor. 江 Use fireproof resilient gasket 1/8 to 1/4 in. thick between 一...
- Page 16 Steps for Changing Cabinet Orientation to Vertical Downflow or Horizontal Left Orientation 1. Remove the screws and front panel and disconnect the refrigerant sensor f「om the control boa「d 2. Pull out the coil with refrige「ant sensor (Figu「e 3-10, Step 2). 3.
- Page 17 When installing the evapo r ator, ensu e the retaining channel is fully engaged with the coil rail. 尸 「 Ensure the retaining channel is fully engaged with the coil rail. DetalA Rails 口 � AIRFLOW 已 兰 Rails Fig.3-11 Vertical Downflow & Horizontal Left Applications 一...
- Page 18 3.5 Installation in an Unconditioned For determination of room area (A) when used to calculate the refrige ant charge limit, the following shall Space 「 apply . 一·比i The room area (A) shall be defined as the room area enclosed by the projection to the base of the walls, partitions and doors of the space in which the appliance is installed.
- Page 19 3.6.2. The allowed maximum refrigerant The minimum opening f o r natu al ventilation (Anvmin) in 「 connected ooms is related to the room area (A), the charge and required minimum room 「 actual efrigerant charge of efrigerant in the system (Mc) , 「...
- Page 20 The minimum circulation airflow • Installation scheme flow chart Mc（口lb Mc ( 一 ． □ □ □ _Qmin (CFM)� Qmin (CFM) Check if the minimum room 。 area meets the requirements Determine the room size and the efrigerant system configuration 「...
- Page 21 Field-made refrigerant joints indoors shall be tightness 4 REFRIGERANT LINE tested. The test method shall have a sensitivity of 5 grams per year of refrigerant or better under a pressure The suction pipe and liquid pipe of the indoor unit need of at least 0.25 times the maximum allowable pressure.
- Page 22 5. AIRFLOW PERFORMANCE (AMERISTAR AIR HANDLERS ARE SUITABLE FOR MOBILE HOME APPLICATIONS) Airflow performance data is based on cooling performance with a coil and no filter in place. Select performance table for appropriate unit size. External static applied to unit allows operation within the minimum and maximum limits shown in table below for both cooling and electric heat operation.
- Page 23 Outdoor CFM Wet Coil without filter and Electric Heat Motor Model 。 Unit External Static Pressure (in w.c) Speed Number Size ( To ns) ent/ A 2.84 2.78 2.71 2.65 2.58 2.50 2.38 2.31 2.14 「 Power /W 1793 1750 1691 1635 1568...
- Page 24 6 DUCTWORK If appliances connected via an air duct system to Field ductwork must comply with the National Fire one or more rooms are installed in a room with an Protection Association NFPA 90A, NFPA 90B and any area less than shown in section 3.6 Table 3-3, applicable local ordinance .
- Page 25 7 ABOUT THE AIR FILTER IMPORTANT: Do not double filter the return air duct system. Do not filter the supply ai duct system. This will 「 change the performance of the unit and reduce airflow. 7.1 Air Filter (Not Factory-Installed) 囚还应...
- Page 26 AIR FILTER REMOVAL 1. Remove bolts manually, remove ai filter recover. See in Fig.7-1. 「 2. Hold the edge of the air filter and ext act out. 「 3. Clean the air filte (Vacuum cleane pure water may be used to clean the air filter. If the dust accumulation is too 「...
- Page 27 一 二二 二 － 王 － ？ ＿ 一--- 二 三 ＿ · ' 厂 ” ， ／ 寸 ＂ · , ， ， 尸 � 尸 ［ ： 今 1 /4"! ． ｀ 片[ ． 卢 尸 1 /4" 一...
- Page 28 9 ELECTRICAL WIRING Power cords and conventional 24VAC non communicating thermostat control wires must be In the U.S.A., wiring must conform with current local separated from each other with a distance of codes and the current National Electric Code (NEC). In more than 2 inches.
- Page 29 2. Wires connections diagram. 团 山 THERMOSTAT TO THERMOSTAT INDOOR UNIT OUTDOOR UNIT Fig.9-2 3. Low voltage wires connections with outdoor unit. • Connect the conventional 24VAC non-communicating thermostat control wires (C, B, Y and W) to the four field supplied wires.
- Page 30 4. Low voltage wires connections with thermostat. 4.1 Connect the Control communication cables by wire nut. • I 。 Fig.9-4 4.2 Wiring diagram of the thermostat. Wiring for 3H and 1 C thermostat 回 一 二勹＿ 二二二一二二二一二二二一二二二一言 回 回 巴 巴...
- Page 31 Wiring for 2H and 1 C thermostat 一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一朵 回 曰 口 YELLOW 回 曰 BLACK 回 GREEN PURPLE 巴 GRAY THERMOSTAT BLUE WHITE BROWN CAP AND SEAL THE INDOOR UNIT UNUSED WI RE Note: W1 and W2 are jumped, so Elect ic Heat will only function in 「...
- Page 32 一 ·｀ 从 ． 一 9.2 Power Wiring In the U.S.A., wiring must conform with current local Electrostatic discharge can affect electronic codes and the current National Electric Code (NEC). In components. Take care during unit installation Canada, wiring must conform with current local codes and service to protect the unit's electronic and the current Canadian Electrical Code (CEC) .
- Page 33 9.3 Alarm Wiring 9.3.1 Wiring Diagram Alarm output wires 勹 ． Ext output wirin Central monitor 飞 Fig.9-9 Note: The remote control of the internal circuit is for refe「ence only, the user can change the wiring mode according to the actual situation.
- Page 34 9.4 Electric Heater Kit 9.4.1 Electric heater kit breaker information Ref.Air Handler Breaker Description CHE2-05* 5 kW Heate「 Max. 240 V, 30 A, 2 P 18,24,30,36,42,48,60 CHE2-08* 7.5 kW Heater Max. 240 V, 50 A, 2 P 18,24,30,36,42,48,60 CHE2-10* 10 kW Heater Max.
- Page 35 9.4.2 Electric Heater Kit Electrical Data (only Eletric Heat) Min. Circuit Max. Fuse or Breaker ． ． ． Fan Speed Heater Kit Electric Ampacity (HACR) Ampacity Handler (AC/H P ) Model Heat (kW) ． ． ． Model Used Low Medium High 240V 208 V 240V...
- Page 36 9.4.3 Electric Heater Kit Electrical Data (Eletric Heat combines with Indoor motor) Min. Circuit Max. Fuse or Breaker ． ． ． Fan Speed Heater Kit Electric Ampacity (HACR) Ampacity Handler (AC/H P ) Model Heat (kW) ． ． ． Model Used Low Medium High 240V...
- Page 37 11 SERVICE 10 SETTING 11.1 Error Code and Troubleshooting Check whether the DIP switch is correct according to the wiring nameplate after the electrical wiring is complete. The unit LED will flash when the unit is abnormal. Securi SW6-1,2 is used to set the blowe motor speed.
- Page 38 11.2 TXV Replacement Information 一唱沁i The TXV replacement options noted in this sheet supersede those in the installation guide. TXV-Replace Steps Step 1: Remove the screws and front coil panel. Step 2: Remove the rubber plugs from the liquid and vapor lines. Step 3: Unwrap copper strap on sensing bulb and dismount the sensing bulb.
- Page 39 12 DISPOSAL Comply with national regulations. Components and accessories from the units are not part of o dinary domestic waste. 「 Complete units, compressors, motors etc. a e only to be disposed of via qualified disposal specialists. 「 This unit uses flammable refrigerant R454B. Please contact the dealer when you want to dispose of this unit. Law requires that the collection, transportation and disposal of re�...
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