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Summary of Contents for MAXA MI26A2
- Page 1 MAXA DC Fan Coil Unit Wall-mounted Technical Technical Manual MI26A2 MI35A2 MI42A2 MI26A3 MI35A3 MI42A3 MAXA reserves the right to discontinue, or change specification or designs at any time without notices and without incurring obligations.
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Page 3: Table Of Contents
DC Fan Coil Unit Two‐pipe Wall‐mounted Series Wall-mounted DC Fan Coil Unit 1. External Appearance ..................2 2. Features ....................... 3 3. Product lineup ..................... 3 4. Accessories ......................4 5. Specifications ...................... 5 6. Dimension ......................11 7. Sound Levels ..................... 14 8. Service Spaces ....................18 9. -
Page 4: Features
• Display shut off (for Type A and P panels though Wireless Remote Controllers RM12F/BGF-E ) Excellent efficiency MAXA DC FCU adopt the brushless DC motor, the DC motor efficiency is up to 90%. The power consumption of DC FCU can be reduced by more than 30% in contrast to the corresponding AC FCU. -
Page 5: Accessories
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 4. Accessories 4.1 Standard accessories Accessory name Qty. Shape Usage Owner’s & installation manual Installation guide Screw ST3.9x25 for installation Screw the installation board board Plastic expanded tube Wrapping tape Drain pipe Wall conduit cover Remote controller R05/BGE Remote controller & Its Frame Frame Mounting screw(ST2.9x10-C-H) Alkaline dry batteries... -
Page 6: Specifications
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 5. Specifications 5.1 S type panel MI26A2 / MI35A2 MI26A2 MI35A2 Model Power supply V/Ph/Hz 492/454/400 825/689/590 Air flow (H/M/L) 289/267/235 485/405/347 Capacity (H/M/L) 2.7/2.59/2.39 3.81/3.3/2.88 Water flow rate(H/M/L) 0.48/0.46/0.42 0.67/0.57/0.51 Cooling1 Water pressure drop(H/M/L) 31.61/28.63/25.36 56.75/41.23/33.02 Power input(H/M/L) - Page 7 DC Fan Coil Unit Two‐pipe Wall‐mounted Series MI42A2 MI42A2 Model Power supply V/Ph/Hz 220-240/1/50 862/741/634 Air flow (H/M/L) 507/435/372 Capacity (H/M/L) 4.47/3.98/3.48 Water flow rate(H/M/L) 0.77/0.68/0.61 Cooling Water pressure drop(H/M/L) 41.17/33.54/27.05 Power input(H/M/L) 26/18/13 Capacity (H/M/L) 4.84/4.23/3.62 Water flow rate(H/M/L) 0.84/0.73/0.64 Heating Water pressure drop(H/M/L) 36.82/33.83/26.26 Power input(H/M/L) 22/16/12 Capacity (H/M/L)
- Page 8 DC Fan Coil Unit Two‐pipe Wall‐mounted Series 5.2 A type panel MI26A3 / MI35A3 MI26A3 MI35A3 Model Power supply V/Ph/Hz 492/454/400 825/689/590 Air flow (H/M/L) 289/267/235 485/405/347 Capacity (H/M/L) 2.7/2.59/2.39 3.81/3.3/2.88 Water flow rate(H/M/L) 0.48/0.46/0.42 0.67/0.57/0.51 Cooling Water pressure drop(H/M/L) 31.61/28.63/25.36 56.75/41.23/33.02 Power input(H/M/L) 13/11/10 34/22/15 Capacity (H/M/L) 2.94/2.8/2.58 4.3/3.65/3.09...
- Page 9 DC Fan Coil Unit Two‐pipe Wall‐mounted Series MI42A3 MI42A3 Model Power supply V/Ph/Hz 220-240/1/50 862/741/634 Air flow (H/M/L) 507/435/372 Capacity (H/M/L) 4.47/3.98/3.48 Water flow rate(H/M/L) 0.77/0.68/0.61 Cooling Water pressure drop(H/M/L) 41.17/33.54/27.05 Power input(H/M/L) 26/18/13 Capacity (H/M/L) 4.84/4.23/3.62 Water flow rate(H/M/L) m3/h 0.84/0.73/0.64 Heating Water pressure drop(H/M/L) 36.82/33.83/26.26 Power input(H/M/L) 22/16/12...
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Page 10: Dimension
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 6. Dimension 6.1 S type panel MI26A2, MI35A2, MI42A2, Model MI26 MI35 MI42 1072... - Page 11 DC Fan Coil Unit Two‐pipe Wall‐mounted Series 6.2 A type panel MI26A3 MI35A3, MI42A3, Model MI26 MI35 MI42 1072...
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Page 12: Sound Levels
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 7. Sound Levels Noise level under three speeds of fan [dB(A)] Unit Number Model MI26A2 MI26A3 MI35A2 MI35A3 MI42A2 MI42A3... - Page 13 DC Fan Coil Unit Two‐pipe Wall‐mounted Series MI26A2 / MI26A3...
- Page 14 DC Fan Coil Unit Two‐pipe Wall‐mounted Series MI35A2 / MI35A3 MI42A2 / MI42A3...
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Page 15: Service Spaces
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 8. Service Spaces... -
Page 16: Main Pcb Ports
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 9. Main PCB ports Main PCB port description: Bit No. Description Remarks CN10 POWER: Mains input Standard CN29 ACN: Cooling and heating 2-way/3-way valve null line Standard CN14 ACN: Cooling and heating 2-way/3-way valve null line Reserved Reserved (the whole machine CN11 PUMP: Water pump output port can not be realized) -
Page 17: Wiring Diagrams
DC Fan Coil Unit Two‐pipe Wall‐mounted Series CN24 DC_FAN：DC Fan Standard EARTH: Grounding screw position Standard CN19 Electrically heated N-wire control port 1 Customized CN26 Electrically heated N-wire control port 2 Customized CN13 Electrically heated L-wire control port 1 Customized CN33 Electrically heated L-wire control port 2 Customized TRANS IN: 0-10V valve powered linear transformer Customized... - Page 18 DC Fan Coil Unit Two‐pipe Wall‐mounted Series Temp.compensation value is 2 pipe 0 under cool mode(default) S1-1 1 2 3 4 1 2 3 4 Temp.compensation value is 4 pipe 1 under cool mode 1 2 3 4 1 2 3 4 S2-1/2 Without enforcement emp.compensation value is to turn wind(default) 2 under cool mode 1 2 3 4...
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Page 19: Trouble Shooting
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 11. Trouble shooting Malfunction code Malfunction Water-level alarm malfunction T2 evaporator sensor malfunction(T2C) T1 evaporator sensor malfunction DC motor malfunction EEPROM communication error T2 evaporator sensor malfunction (T2H) Protection against free Excess water temperature protection Not set models ---- Indoor unit switch at long-range controller is dialed to OFF 11.7.1 EE: Water-level alarm malfunction EE: Water-level alarm malfunction... - Page 20 DC Fan Coil Unit Two‐pipe Wall‐mounted Series 11.7.2 E2: T1 evaporator sensor malfunction E2: T1 evaporator sensor malfunction E3: T1 ev aporator sensor malfunction. Exist T1 connecting wire between sensor and Reconnect and ensure that the mainboa rd gets loose. connection is reliable. Exist Temperature sensor is short-circuited or Replace sensor.
- Page 21 DC Fan Coil Unit Two‐pipe Wall‐mounted Series 11.7.4 E8: Fan motor malfunction E8: DC fan fault Is the motor fan stuck Adjust the IDU fan Is the cable between the main board Properly connect and the fan not connected or loose the cable Power failure; Is the IDU input power abnormal contact the power supply sector Between red and white:...
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Page 22: Installation
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 12. Installation 12.1 Installation Attention 1. Warning: • Be sure only trained and qualified service personnel to install, repair or service the equipment. Improper installation, repair, and maintenance may result in electric shocks, short-circuit, leaks, fire or other damage to the equipment. Install according to this installation instructions strictly. -
Page 23: Installation Order
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 2. Caution: Ground the air conditioner. • Do not connect the ground wire to gas or water pipes, lightning rod or a telephone ground wire. Incomplete grounding may result in electric shocks. Be sure to install an earth leakage breaker. •... - Page 24 DC Fan Coil Unit Two‐pipe Wall‐mounted Series 12.2 Inspecting and Handling the unit At delivery, the package should be checked and any damage should be reported immediately to the carrier claims agent. When handling the unit, take into account the following: Fragile, handle the unit with care. 2.
- Page 25 DC Fan Coil Unit Two‐pipe Wall‐mounted Series 500/600 type: 1. Fix the installation board. Install the installation board horizontally on structural parts in the wall with the spaces provided around • the plate. In case of brick, concrete or similar type walls, make 5mmdia, holes in the wall. Insert clip anchors for •...
- Page 26 DC Fan Coil Unit Two‐pipe Wall‐mounted Series When connection extension drain hose, insulate the connecting part of extension drain hose with a shield pipe. 2. Connection pipe 1) For the left-hand and rear-left-hand piping, install the piping as shown. Bend the connective pipe to be laid at 43mm height or less from the wall.
- Page 27 DC Fan Coil Unit Two‐pipe Wall‐mounted Series 2) Fix the end of the connective pipe. Caution: Connect the indoor unit first then the outdoor unit and bend and arrange the pipe carefully. • Do not allow the piping to let out from the back of the indoor unit. •...
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Page 28: Wiring Caution
DC Fan Coil Unit Two‐pipe Wall‐mounted Series Note: Please refer to installation instructions for the water piping conection of the air conditioner that with throttle device inside. 3-way valve discharge (4.ports) valve conector At the first debugging, completely expel air from coils via expelling valve. 12.5 Wiring Caution: The reserved function is indicated in broken line table, users can select it when necessary. - Page 29 DC Fan Coil Unit Two‐pipe Wall‐mounted Series 12.5.1 Terminal Board Diagram Please adopt the shielded twisted-pair wire, and connect the shielded layer to E. Insert 2 & 3 together is OK The reserved wire control function is indicated in broken line table, users can purchase the wire controller when necessary.
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Page 30: Capacity Table
DC Fan Coil Unit Two‐pipe Wall‐mounted Series 13. Capacity Table Cooling Capacity MI26A2/ MI26A3 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD TC WF WPD TC WF WPD TC WF WPD TC WF WPD °C °C °C kW kW m /h kPa kW kW m... - Page 31 DC Fan Coil Unit Two‐pipe Wall‐mounted Series (Continued) MI26A2/ MI26A3 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD TC WF WPD TC WF WPD TC WF WPD TC WF WPD °C °C °C kW m /h kPa kW kW m /h kPa kW kW m...
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Page 32: Cooling Capacity
DC Fan Coil Unit Two‐pipe Wall‐mounted Series Cooling Capacity MI35A2/ MI35A3 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) TC SC WF WPD TC SC WF TC SC WF TC SC WF TC SC WF °C °C °C kW kW m /h kPa kW kW m kW kW m kW kW m kW kW m... - Page 33 DC Fan Coil Unit Two‐pipe Wall‐mounted Series (Continued) MI35A2/ MI35A3 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) WF WPD TC WF WPD TC WF WPD TC WF WPD TC WF WPD °C °C °C kW kW m /h kPa kW kW m /h kPa kW kW m /h kPa kW kW m /h kPa...
- Page 34 DC Fan Coil Unit Two‐pipe Wall‐mounted Series Cooling Capacity MI42A2/ MI42A3 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) TC SC WF WPD TC SC WF WPD TC SC WF WPD TC SC WF WPD TC SC WF WPD °C °C °C kW kW m kW kW m kW kW m kW kW m kW kW m...
- Page 35 DC Fan Coil Unit Two‐pipe Wall‐mounted Series (Continued) MI42A2/ MI42A3 Indoor Indoor temperature (D.B.) EWT ΔT temp (W.B.) SC WF WPD TC SC WF SC WF WPD TC SC WF WPD TC SC WF WPD °C °C °C kW kW m /h kPa kW kW m kW kW m /h kPa kW kW m...
- Page 36 DC Fan Coil Unit Two‐pipe Wall‐mounted Series Heating Capacity MI26A2/ MI26A3 Indoor temperature (W.B.) ΔT °C °C 2.38 0.26 4.61 2.08 0.22 3.67 1.77 0.19 2.72 1.48 0.16 1.73 2.09 0.18 2.32 1.80 0.15 1.55 1.51 0.13 0.97 1.21 0.10 0.68 1.82 0.13 0.98 1.52 0.11 0.74...
- Page 37 DC Fan Coil Unit Two‐pipe Wall‐mounted Series Heating Capacity MI35A2/ MI35A3 Indoor temperature (W.B.) ΔT °C °C 3.53 0.38 9.04 3.09 0.33 7.18 2.66 0.29 5.55 2.22 0.24 4.10 3.12 0.27 5.04 2.68 0.23 3.90 2.24 0.19 2.76 1.82 0.16 1.60 2.70 0.19 2.76 2.27 0.16 1.77 1.85 0.13...
- Page 38 DC Fan Coil Unit Two‐pipe Wall‐mounted Series Heating Capacity MI42A2/ MI42A3 Indoor temperature (W.B.) ΔT °C °C 4.01 0.43 15.67 3.52 0.38 12.50 3.02 0.33 9.66 2.53 0.27 7.09 3.56 0.31 8.75 3.06 0.26 6.77 2.56 0.22 5.00 2.06 0.18 3.10 3.09 0.22 5.09 2.59 0.19 3.43 2.10 0.15...
- Page 40 ® C O N DITIO NIN G Via S. Giuseppe Lavoratore 24, Loc. La Macia Z.A.I. - 37040 Arcole - Verona - Italy Tel. (+39).045.76.36.585 r.a. - Fax (+39).045.76.36.551 r.a. E-mail: info@advantixspa.it Export Department Tel. (+39).045.47.50.441 www.maxa.it...
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