Summary of the content on the page No. 1
FILE NO. A10-001
Revised: May, 2010
SERVICE MANUAL
SPLIT TYPE
INDOOR UNIT
RAV-SM2242DT-E
RAV-SM2802DT-E
RAV-SM2242DT-TR
RAV-SM2802DT-TR
R410A
PRINTED IN JAPAN, Apr., 2010 ToMo
Summary of the content on the page No. 2
CONTENTS ORIGINAL INSTRUCTION................................................................................. 3 WARNING INDICATIONS ON THE AIR CONDITIONER UNIT.......................... 5 PRECAUTION FOR SAFETY ............................................................................ 6 NEW REFRIGERANT (R410A)........................................................................ 11 1. SPECIFICATIONS .................................................................................... 13 1-1.
Summary of the content on the page No. 3
Original instruction Please read carefully through these instructions that contain important information which complies with the “Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them. Some of the details provided in these instructions differ from the service manual, and the instructions provided here take precedence. Generic Denomination: Air Conditioner Definition of Qualified Installer or Qualified Service Person The air conditioner must be installed, maintained, re
Summary of the content on the page No. 4
Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below. Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric shocks and other injuries. Work undertaken Protective gear w
Summary of the content on the page No. 5
Warning Indications on the Air Conditioner Unit [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions If removing the label during parts replace, stick it as the original. Warning indication Description WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies Disconnect all remote electric before servicing. power supplies before servicing. WARNING WARNING Moving parts. Moving parts. Do no
Summary of the content on the page No. 6
Precaution for Safety WARNING Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions. Only qualified service person ( ∗1) is allowed to repair the air conditioner. Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks and/or other problems. Only a qualified installer ( ∗1) or qualified service person ( ∗1) is allowed to carry out the elect
Summary of the content on the page No. 7
Even if the circuit breaker has been set to the OFF position before the service panel is removed and the electrical parts are repaired, you will still risk receiving an electric shock. For this reason, short-circuit the high-voltage capacitor terminals to discharge the voltage before proceeding with the repair work. Execute For details on the short-circuiting procedure, refer to the Service Manual. discharge between You may receive an electric shock if the voltage stored in the capacitors has no
Summary of the content on the page No. 8
The refrigerant used by this air conditioner is the R410A. Check the used refrigerant name and use tools and materials of the parts which match with it. For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service port is changed from one of the former R22. For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air conditioner which uses o
Summary of the content on the page No. 9
Once the repair work has been completed, check for refrigerant leaks, and check the insulation resistance and water drainage. Then perform a trial run to check that the air conditioner is running properly. After repair work has finished, check there is no trouble. If check is not executed, a fire, electric shock or injury may be caused. For a check, turn off the power breaker. Check after After repair work (installation of front panel and cabinet) has finished, execute a test run to check repa
Summary of the content on the page No. 10
Explanations given to user • If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF position, and contact a qualified service person to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are completed. Relocation • Only a qualified installer ( ∗1) or qualified service person ( ∗1) is allowed to relocate the air conditioner. It is dangerous for the air conditioner to be relocated by an
Summary of the content on the page No. 11
New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner wit
Summary of the content on the page No. 12
4. Tools 1. Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below show
Summary of the content on the page No. 13
1. SPECIFICATIONS 1-1. Indoor Unit 1-1-1. Concealed Duct High static pressure Type Indoor unit RAV-SM2242DT-E RAV-SM2802DT-E Model Outdoor unit RAV-SM2242AT8-E RAV-SM2802AT8-E Cooling capacity (kW) 20.0 23.0 Heating capacity (kW) 22.4 27.0 Power supply (V) 1 phase 220-240V~ 50Hz Running current (A) 5.25 – 4.81 5.25 – 4.81 Indoor unit Power consumption (kW) 1.12 1.12 Power factor (%) 97 97 Power supply (V) 3 phase 380-415V Cooling Running current (A) 9.83 – 9.00 12.33 – 11.29 Outdoor unit Power
Summary of the content on the page No. 14
1-1-1. Concealed Duct High static pressure Type (Contined) Indoor unit RAV-SM2242DT-TR RAV-SM2802DT-TR Model Outdoor unit RAV-SM2244AT8-E RAV-SM2804AT8-E Cooling capacity (kW) 20.0 23.0 Heating capacity (kW) 22.4 27.0 Power supply (V) 1 phase 220-240V~ 50Hz Running current (A) 5.25 – 4.81 5.25 – 4.81 Indoor unit Power consumption (kW) 1.12 1.12 Power factor (%) 97 97 Power supply (V) 3 phase 380-415V Cooling Running current (A) 9.83 – 9.00 12.33 – 11.29 Outdoor unit Power consumption (kW) 6.08 7
Summary of the content on the page No. 15
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) 2-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E / RAV-SM2242DT-TR, RAV-SM2802DT-TR – 15 – 1. Be sure to set a check port at the right of air discharge port. 2. Set to slope the drain piping downward at 1/100 and be sure to set a drain trap on its way as shown below figure. Space required for installation and serving 3. Please avoid the installation on the place where oil disperses or is shrouded by oil smoke, such as kitchen or mec
Summary of the content on the page No. 16
3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM 3-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E RAV-SM2242DT-TR, RAV-SM2802DT-TR Distributor Indoor unit (Strainer TCJ sensor incorporated) Air heat exchanger TC sensor Refrigerant pipe Refrigerant pipe at liquid side ØB at gas side ØA Heating To outdoor unit To outdoor unit Cooling Dimension table Outer diameter of refrigerant pipe Indoor unit Gas side ØA Liquid side ØB SM224, SM280 type 28.6 12.7 – 16 –
Summary of the content on the page No. 17
4. WIRING DIAGRAM 4-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E RAV-SM2242DT-TR, RAV-SM2802DT-TR – 17 – (Option) TA TCJ TC DP RED RED 6 Fan motor inside DP LM RED FAN CN033 9 7 1 3 CN068 1 3 1 2 1 2 1 2 wiring diagram CN083(WHI) (BLU) 1 (GRN) 97 5 3 1 1 3 3 1 2 3 12 1 2 12 7 7 CN030 CN104 CN102 CN101 CN080 1 43F1 spark killer 43F2 spark killer (RED) (YEL) (RED) (BLK) PNL RY007 HM LUL (GRN) 2 YEL 8 8 FS 3 BLU ORN CN073 1 BLK EXCT (RED) 2 WHI WHI WHI RY004 Control P.C. Board RY006 1 WHI CN304(
Summary of the content on the page No. 18
4-2. Fan Characteristics Current value as a criterion, adjust the air volume value to become within the range of the chart below.] < RAV-SM2242 type > Standard air volume: 3600m³/h 8 7.5 7 6.5 6 High static pressure tap (50Hz) Medium static pressure tap (50Hz) 5.5 Low static pressure tap (50Hz) 5 4.5 4 300 250 200 150 High static pressure tap (50Hz) 100 Medium static pressure tap (50Hz) 50 Low static pressure tap (50Hz) 5 2800 3000 3400 3800 4200 4400 2880 3200 3600 4000 4320 Lower limit of air
Summary of the content on the page No. 19
< RAV-SM2802 type > Standard air volume: 4200m³/h 8.5 8 7.5 7 High static pressure tap (50Hz) 6.5 Medium static pressure tap (50Hz) 6 Low static pressure tap (50Hz) 5.5 5 4.5 4 350 300 250 200 150 High static pressure tap (50Hz) 100 Medium static pressure tap (50Hz) 50 5 Low static pressure tap (50Hz) 3200 3400 3800 4200 4600 5000 5200 3360 3600 4000 4400 4800 5040 Lower limit of air volume Air volume (m³/h) Upper limit of air volume REQUIREMENT Add a air volume damper to the air supply duct, an
Summary of the content on the page No. 20
Wire connection change of fan motor This duct is composed of 3 fan motors. To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires that are connected to the underside of the fan tap changing terminal block to the same number (F1, F2 or F3) terminal. The wires of the fan motor has been connected to (F2) [External static pressure 137Pa (14mmAq)] as factory default. Low static pressure (F1) YEL: Yellow FM FM FM BLU: Blue ORG: Orange Fan motor Fan m
