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Owner's Manual
Split Type Wall-mounted Air Conditioner
Model:
ISMO-1821
Thank you for choosing our product.
For proper operation, please read and keep this manual carefully.
If you have lost the Owner's Manual, please contact the local agent or
visit www.impecca.com for an electronic version.
v. 1.1
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Table of Contents
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Summary of Contents for Impecca ISMO-1821
- Page 1 Split Type Wall-mounted Air Conditioner Model: ISMO-1821 Thank you for choosing our product. For proper operation, please read and keep this manual carefully. If you have lost the Owner’s Manual, please contact the local agent or visit www.impecca.com for an electronic version. v. 1.1...
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Page 2: Table Of Contents
In line with the company’s policy of continual product improvement, the aesthetic and dimensional characteristics, technical data and accessories of this appliance may be changed without notice. CONTENTS GENERAL INFORMATION Conformity And Range The Instructions Before Use Name of Parts Technical Data Outdoor Unit Working Temperature Range Electrical Connections... -
Page 3: Conformity And Range
Explanation of Symbols Indicates a hazardous situation that, if not avoided, will result in death or serious injury. Indicates a hazardous situation that, if not avoided, could result in death or serious injury. Indicates a hazardous situation that, if not avoided, may result in minor or moderate injury. -
Page 4: The Instructions Before Use
THE INSTRUCTIONS BEFORE USE GENERAL INFORMATION WARNING When having a burning smell or The power supply must adopt the Never cut off or damage power ★ ★ ★ smoke,please turn off the power special circuit that with air switch cables and control wires. If the supply and contact with the ser- protection and assure it has enou- power cable and signal control... -
Page 5: Name Of Parts
Note: The above figures are only intended to a simple diagram of the appliance and may not correspond to the appearance of the units that have been purchased. TECHNICAL DATA GENERAL INFORMATION ISMO-1821 MODE Electrical data Electricity supply 208/230V,60HZ Fuse or air switch... -
Page 6: Electrical Connections
L1 L2 Air-conditioner Air switch capacity ISMO-1821 An all-pole disconnection switch having a contact separation of at least 3mm in all pole should be connected in fixed wiring. Wrong wire connection may cause malfunction of some electric components.After fixing cable, ensure... -
Page 7: Installing The Outdoor Unit
INSTALLING THE OUTDOOR UNIT INSTALLER Location Install the drain fitting and the drain hose (for model with heat pump only) Use bolts to secure the unit to a flat, solid floor. Condensation is produced and flows from the out- When mounting the unit on a wall or the roof, make door unit when the appliance is operating in the sure the support is firmly secured so that it cannot heating mode. -
Page 8: Maintenance
MAINTENANCE INSTALLER Use suitable instruments for the refrigerant R410A. Do not use any other refrigerant than R410A. ● Do not use mineral oils to clean the unit. INSTALLATION DIMENSION DIAGRAM INSTALLER The installation must be done by trained and qualified service personnel with reliability according to this manual. -
Page 9: Check After Installation
CHECK AFTER INSTALLATION INSTALLER Check Items Problems Owing to Improper Installation Is the installation reliable? The unit may drop, vibrate or make noises May cause unsatisfactory cooling (heating) Has the gas leakage been checked? effect Is the thermal insulation of the unit May cause condensation and water dropping sufficient? Is the drainage smooth? -
Page 10: Customer Support
If you wish to contact us by phone, please be sure to have your model number and serial number ready and call us between 9:00am and 6:00pm ET, at +1 866-954-4440. Keep tabs on Impecca's newest innovations & enter contests via our social network feeds: ... - Page 12 © 2016 Impecca, a division of LT Inc., Wilkes Barre, PA.
- Page 13 Flex Series R410A GMV Multi VRF Floor and Ceiling Type Indoor Unit (For North America) Owner's Manual Commercial Air Conditioners Models: ISMI-FC18 ISMI-FC24 Thank you for choosing Commercial Air Conditioners, please read this owner’s manual carefully before operation and retain it for future reference. v 1.1...
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Page 14: User Notice
This product must not be disposed together with the domestic waste. This product has to be disposed at an authorized place for recycling of electrical and electronic appliances. Thank you for selecting Impecca air conditioner. Before use, please read this manual carefully and keep it properly for furthur reference. - Page 15 Contents 1 Safety Precautions ..................1 2 Installation Precautions and Location Choosing ..........2 2.1 Installation Precautions ..................2 2.2 Location Choosing ....................2 2.3 Imappropriate Location ..................2 3 Installation of Floor and Ceiling Type Indoor Unit ..........3 3.1 Space Dimension for Unit Installation ..............
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Page 16: Safety Precautions
Contact with the service center and consult the qualified technician ◆ Do not repair or adjust the air conditioner by yourself. Please contact the service center or Impecca technicians for help. ◆ Do not use the fuse with unsuitable capacity or iron thread instead of fuse, otherwise, it will cause malfunction or fire ◆... -
Page 17: Installation Precautions And Location Choosing
Flex Series for North America 2 Installation Precautions and Location Choosing 2.1 Installation Precautions The installation of air conditioner must be conform to national and local safety laws. Installation quality will directly affect the normal use of air conditioner. Do not attempt to install the air conditioner by yourself. -
Page 18: Installation Of Floor And Ceiling Type Indoor Unit
Impecca would not deal with on time by the inconvenience of the business contact. (2). It should be done by professional personnel when the air conditioner unit is moved to other place. - Page 19 Flex Series for North America (Refer to Fig.5). Installation Side panel fixing screw(M4) paper plank Fig.2 Fig.3 (3). Set the suspension bolt. (Use W3/8 or M10 size suspension bolts) ＊ Adjust the distance from the unit to the ceiling slab beforehand. (Refer to Fig.4) (4).
- Page 20 Flex Series for North America Celling Hanger bracket 40 or less Hanger bracket setting bolt(M8) Suspension bolt Hanger bracket Hanger bracket fixing bolt(M6) Fig.4 Fig.5 Celling slab Hanger bracket Fig.6 Fig.7 Fig.8 Fig.9 When installing the indoor unit, you can refer the paper pattern for installation. Make sure that the drainage side must be 10mm lower than the other side in order to drain the condensate water easily.
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Page 21: Electrical Wiring
Flex Series for North America Model ISMI-FC18 1220 1158 ISMI-FC24 3.4 Electrical Wiring Caution: The power of every indoor unit should be connected in outdoor unit. Open front panel. ① . Remove the electrical box cover. ② . Route the power connection cord from the back of the indoor unit and pull it toward the front ③... -
Page 22: Drainpipe Installation
Flex Series for North America POWER Caution! T he incorrect of wiring connection would lead malfunction of some of the electric parts. ① . B e sure to leave some space between the connecting end and the clamp end after the ②... -
Page 23: Install The Connection Pipes
Flex Series for North America ＊ Either the right rear or right side of the unit is suitable for fixing the drainpipe ＊ The diameter of the drainpipe should be equal to or greater than that of the connecting pipe. ＊... - Page 24 Flex Series for North America Pipe Flare Nut Pipe Spanner Nut-Required Torque Pipe Diameter (mm) Required Torque φ6.35 15--30 φ9.52 35-40 φ12 45-50 φ15.9 60-65 (1). Align the flared end of the copper tube with the threaded connector, and then hand-tighten the flared nut (2).
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Page 25: Part Names Of Floor And Ceiling Type Indoor Unit
Flex Series for North America 4 Part Names of Floor and Ceiling Type Indoor Unit Air outlet Guide louver Front panel Air filter, purifier (in air inlet grille) Connecting pipe Air inlet Note: Different models of air conditioners as shown above have the same appearances. -
Page 26: Working Temperature Range
Flex Series for North America 5 Working Temperature Range Working Temperature Range Indoor side state ℉（℃） Outdoor side state ℉（℃） Wet bulb Dry bulb Wet bulb Dry bulb temp. ℉（℃） temp. ℉（℃） temp. ℉ （℃） temp. ℉ （℃） Rated. Cooling 80.0(26.7) 67.0(19.4) 95.0(35.0) -
Page 27: Maintenance Method
Flex Series for North America 6 Maintenance Method Warning! T urn off the unit and cut off the power supply when cleaning the air conditioner, otherwise, ① . electric shock may happen. D o not let the air conditioner get wet, or it will cause electric shock. Ensure that the air ②... -
Page 28: Operating Instructions
Flex Series for North America 7 Operating Instructions ＊ Airflow direction will be changed by ＊ The expected temperature should adjusting the louvers and flaps as shown, be set at a moderate level to avoid of accordingly well air condition the room unnecessary energy consumption. - Page 29 Flex Series for North America ＊ Check electrical system (voltage and frequency). Use the power supply indicated ＊ If electric shock suddenly happens, turn on the nameplate of the unit to operate the off the unit. If the unit is not to be used air conditioner and only fuses with specified for a long period, cut off the main power capacity should be done by technicians.
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Page 30: Malfunction Analysis
Flex Series for North America 8 Malfunction Analysis Warning! Repairing work should be done by Impecca technicians. For saving your time and spending, please check the following malfunction analysis before contacting customer service center. Malfunction Phenomena Malfunction Analysis After turning off the air... -
Page 31: After-Sales Service
If you wish to contact us by phone, please be sure to have your model number and serial number ready and call us between 9:00am and 6:00pm ET, at +1 866-954-4440. Keep tabs on Impecca's newest innovations & enter contests via our social network feeds: ... - Page 32 © 2016 Impecca, a division of LT Inc., Wilkes Barre, PA.
- Page 33 Wired Controller IS-TT850 User's Manual Thank you for choosing Impecca Air Conditioners. Please read this owner’s manual carefully before operation and retain it for future reference.
- Page 34 User Notice Please carefully read this manual before installation and use of this product there is separate Never install wired controller in a wet place or under direct sunlight. Shielded twisted pair line must be substituted as signal line for wired controller if the unit is installed in the place where there is electromagnetic interference.
- Page 35 Contents 1 Display Section....................1 1.1 Controller's LCD ..................1 1.2 Instruction to LCD ..................2 2 Buttons ......................3 2.1 Layout of Buttons ..................3 2.2 Functions of Buttons ................... 3 3 Operation Instructions ..................4 3.1 On/Off ......................4 3.2 Mode Setting ....................
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Page 36: Display Section
Wired Controller IS-TT850 1 Display Section Fig1.1.1 Diagram of wired controller 1.1 LCD Display of Wired Controller Fig.1.1.2 LCD display... -
Page 37: Instruction To Lcd Display
Wired Controller IS-TT850 1.2 Instruction to LCD Display Table 1.1 Symbols Description Swing function Air exchange function (this function is yet unavailable for this unit). Sleep function (Only sleep 1). Each kind of running mode of indoor unit (auto mode) Cooling mode Dry mode Fan mode... -
Page 38: Buttons
Wired Controller IS-TT850 2 Buttons 2.1 Layout of Buttons 2.2 Functions of Buttons Table 2.1 Name Function Enter/Cancel Function selection and cancellation. Running temperature setting of the indoor unit, range:61°F-86° F(16°C-30°C). Timer setting, range:0.5(30 minutes) - 24 (hours). Setting of the low/middle/high/auto fan speed. Mode Setting of the Cooling/Heating/Fan/Dry/Auto mode of the indoor unit. -
Page 39: Operation Instructions
Wired Controller IS-TT850 3 Operation Instructions 3.1 On/Off Press On/Off button to toggle your A/C's power. Note: The state shown in Fig.3.1.1 indicates the “Off” state of the unit after power has been restored to the unit. The screen shown in Fig.3.1.2 indicates the “On” state of the unit after power on. Fig.3.1.1 “Off”... -
Page 40: Fan Setting
Wired Controller IS-TT850 3.4 Fan Setting While the unit is powered on, press Fan and then fan speed of the indoor unit will change circularly as shown in Fig.3.4.1. Middle High (Fig. 3.4.1) 3.5 Timer Settings While the unit is powered on, pressing the Timer button allows you to set the delay until the unit turns off. - Page 41 Wired Controller IS-TT850 Timer on setting under the “Off” state of the unit is shown as Fig.3.5.2. Fig.3.5.2 Timer on Setting under the “Off” State of the Unit 0.5hr. If either of them is pressed continuously, the set time will increase/ decrease by 0.5hr every 0.5s.
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Page 42: Swing Setting
Wired Controller IS-TT850 3.6 Swing Setting Swing On: Press Function under on state of the unit to activate the swing function. In this case, Swing Off: When the Swing function is on, press Function to enter the Swing setting interface,with blinking. -
Page 43: Sleep Setting
Wired Controller IS-TT850 3.7 Sleep Setting Sleep on: Press Function under the On state of the unit till the unit enters the Sleep setting Sleep off: When the Sleep function is activated, press Function to enter the Sleep setting status. After that, press Enter/Cancel to cancel this function. In the Cooling or Dry mode, the temperature will increase by 1°C after the unit runs under Sleep1 for 1hr and 1°C after another 1hr.After that, the unit will run at this temperature. -
Page 44: Turbo Setting
Wired Controller IS-TT850 3.8 Turbo Setting Turbo function: The unit at the high fan speed can realize quick cooling or heating so that the room temperature can quickly approach the setting value. In the Cooling or Heating mode, press Function till the unit enters the Turbo setting status and When the Turbo function is activated, press Function to enter the Turbo setting status and then press Enter/Cancel to cancel this function. -
Page 45: E-Heater Setting
Wired Controller IS-TT850 3.9 E-heater Setting E-heater (auxiliary electric heating function): In the Heating mode, E-heater is allowed to be Once the wired controller or the remote controller enters the Heating mode, this function will be turned on automatically. Press Function in the Heating mode to enter the E-heater setting interface and then press Enter/Cancel to cancel this function. -
Page 46: Blow Setting
Wired Controller IS-TT850 3.10 Blow Setting Blow function: After the unit is turned off, the water in evaporator of indoor unit will be automatically evaporated to avoid mildew. In the Cooling or Dry mode, press Function till the unit enters the Blow setting status and then press Enter/Cancel to active this function. -
Page 47: Other Functions
Wired Controller IS-TT850 3.11 Other Functions a. Lock the same time for 5s till the wired controller enters the Lock function. In this case, LCD displays After that, repress these two buttons at the same time for 5s to quit this function. Under the Lock state, any other button press won’t get any response. - Page 48 Wired Controller IS-TT850 Fig.4.2 Fig.4.2 shows the installation steps of the wired controller, but there are some issues that need your attention. 1) Prior to the installation, please firstly cut off the power supply of the wire buried in the installation hole, that is, no operation is allowed with electricity during the whole installation.
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Page 49: Dismantlement Of The Wired Controller
Wired Controller IS-TT850 and connection lines between the indoor and outdoor unit, with a minimum interval of 20cm, otherwise the communication of the unit will probably work abnormally. If the air conditioning unit is installed where is vulnerable to electromagnetic interference,then the signal and communication lines of the wired controller must be the shielding twisted pair lines. - Page 50 Wired Controller IS-TT850 Table 5.1 Meaning of Each Error Error Error Error Error Code Code Return air temperature sensor open/ Drive board communication error short circuited evaporator temperature sensor open/ Compressor overheating protection short circuited Indoor unit liquid valve temperature Indoor and outdoor units unmatched sensor open/short circuited Indoor gas valve temperature sensor...
- Page 51 Technical Support Before calling technical support, please see the troubleshooting guide above. You may also visit our website at www.impecca.com for answers to Frequently Asked Questions and to contact us. Email: support@impecca.com Phone: +1 866–954–4440 Web: www.impecca.com...
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