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Summary of Contents for ComfortStar LCM7 Series
- Page 1 INSTALLATION AND OPERATION MANUAL High Efficiency Air Handlers 2-5 Tons Capacity R4548 LCM7 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 ． RECOGNIZE THIS SYMBOLAS AN INDICATl0N OF lMPORTANT SAFETY INFORMATION 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 AFETY • 1.1 S a fe t y S i g n s • 1.2 S afet y P r eca uh o n s 2 ABOUT THE P RO D UCT • 2. 1 U n i t D i m e n s i o ns · · · · · · · · · · · · · ·...
- 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 no does it 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.
- 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 ··，口7mmC- .AWI``；lb1| ` tC- 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 fo Refrigerating pipe or components are installed in 「 「 with most refrigerants 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 co rode refrigerant 「...
- Page 8 When transferring refrigerant into cylinders, to recharging the system, it shall be 「 「 pressure-tested with the appropriate pu ging ensure that only appropriate refrigerant recovery 「 gas. The system shall be leak-tested on cylinders are employed. Ensu e that the correct 「...
- 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 Wire group connecting to thermostat Wire group connecting to...
- Page 11 2.2 Parts Introduction ＠ ＠ ＠ ＠ ＠ Fig.2-2 ；二 ＠ ＠ ＠ 惫） �oard DC Motor Blower I AL-Evaporator R454B-TXV R454B Refrige ant Sensor 「 Table 2-2 2.3 Attached Fittings 。 Name Name Appearance Quantity Appearance Quantity 勹 Indoor unit operation Sealing ring 荔...
- Page 12 2.4 Refrigerant Sensor 3 INSTALLATION 3.1 Installation Instructions R454B refrigerant leakage sensor is configured f o r the indoor unit. To meet diffe ent 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 efrigerant senso is applied to the...
- 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 recommended 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 natural ventilation (Anvmin) 1n connected rooms is related to the oom area (A), the charge and required minimum room 「 actual refrigerant cha ge of refrigerant 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 2.92 2.99 3.07 3.14 3.19 3.25 3.35 3.49 3.50 「 Power /W 1560 1520 1480 1442 1403...
- Page 24 NOTES: Airflow based upon cooling performance at 230V with no electric heat and no filter. Airflow at 208V is approximately the same as 230V because the mult-tap ECM motor is a constant torque motor. The torque doesn't drop off at the speeds in which the motor operates.
- 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 conventional 24VAC non-communicating thermostat control wires must In the U.S.A., wiring must conform with current local be separated from each other with a distance of codes and the current National Electric Code (NEC). In more than 2 inches. Otherwise, the communication Canada, wiring must conform with current local codes may be abnormal.
- Page 29 2. Wires connections diagram. 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. Multicore wires used for 24VAC non-communicating thermostat control wires To outdoor unit...
- Page 30 4. Low voltage wires connections with thermostat. 4.1 Connect the Control communication cables by wire nut. • I 。 0|厂· Fig.9-4 4.2 Wiring diagram of the thermostat. -－－－－-－－－－－－－-－－－－－－－－－－－－－－－-－－－－－－－－－－一朵 Support 3H and 2C thermostat 巴 回 巴 巴 巴 YELLOW 曰 回...
- Page 31 Wiring fo「4H and 2C thermostat 回 二二一二二二一 一二二二一二二二二二二百 回 一 回 曰 巳 回 YELLOW 曰 BLACK 回 GREEN 回 PURPLE GRAY THERMOSTAT BLUE WHITE BROWN Note: Any time the electric heat elements are active, the indoor fan CAP AND SEAL THE will run in high stage.
- Page 32 Wiring for 2H and 2C thermostat 回 曰 巴 曰 YELLOW 曰 回 BLACK GREEN 回 PURPLE GRAY THERMOSTAT BLUE WHITE BROWN CAP AND SEAL THE INDOOR UNIT UNUSED WI RE Fig.9-8 Wiring for 1 H and 1 C thermostat 曰...
- Page 33 Wiring fo「2H and 1 C thermostat 回 曰 口 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 曰 曰 回 已 YELLOW BLACK GREEN PURPLE GRAY THERMOSTAT BLUE WHITE BROWN CAP AND SEAL THE UNUSED WI RE INDOOR UNIT Note: W1 and W2 are」umped, so Electric Heat will only function in high stage.
- Page 34 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 35 9.3 Alarm Wiring 9.3.1 Wiring Diagram Alarm output wires 勹 ． Ext output wirin Central monitor 飞 Fig.9-12 Note: The remote control of the internal circuit is for refe「ence only, the use「can change the wiring mode according to the actual situation.
- Page 36 9.4 Electric Heater Kit 9.4.1 Electric heater kit breaker information Ref.Air Handler Breaker Description CHE2-05* 5 kW Heater Max. 240 V, 30 A, 2 P 24,36,48,60,61 CHE2-08* 7.5 kW Heater Max. 240 V, 50 A, 2 P 24,36,48,60,61 CHE2-10* 10 kW Heater Max.
- Page 37 9.4.2 Electric Heater Kit Electrical Data (only Eletric Heat) Min. Circuit Max. F use or Breaker Minimum Heating Blower Heater Kit 「 Electric ． ． ． ． ． Ampacity (HACR) Ampacity Handler Speed Model Heat (kW) Model ． ． ． Used 240V 208V...
- Page 38 9.4.3 Electric Heater Kit Electrical Data (Eletric Heat combines with Indoor motor) Min. Circuit Max. Fuse or Breaker Minimum Heating Blower Heater Kit 「 Electric ． ． ． ． ． Ampacity (HACR) Ampacity Handler Speed Model Heat (kW) Model ． ． ． Used 240V 208V...
- Page 39 11 SERVICE 10 SETTING 11.1 Error Code and Troubleshooting Check whether the DIP switch is correct according to the ing nameplate after the electrical wiring is complete. 「 The unit LED will flash when the unit is abnormal. SW6-1,2 is used to set the blower speed. The factory Security consideration, the outdoo unit shutdown until default settings of different models as shown in the table...
- Page 40 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 41 12 DISPOSAL Comply with national regulations. Components and accessories from the units are not part of ordinary domestic waste. Complete units , compressors, motors etc. are 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 refrigerants must conform with the regulations governing the collection and destruction of hydrofluorocarbons.
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