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350 

INSTALLATION & OPERATING 

MANUAL 

MHWX Hi-Wall Fan Coils  

9,000-36,000 BTUH 

 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                  
 
 
 
 
 
 
 
 
 
 
 
 
   

 

 

 

 
 
 
 
 
                                                               

 

                                                                                   
 
 
           
 

 

GENERAL 

Read the entire contents of this manual 
before beginning installation. Multiaqua 
assumes no responsibility for equipment 
installed contradictory to any code 
requirement or installation instructions. 

   The components of this fan coil have 
been inspected at the factory and readied 
for shipment. Upon receiving the 
shipment a visual inspection of the 
packaging must be performed.  

   If any damage to the packaging is 
discovered, an inspection of the 
components must be performed and 
noted on the delivery documents. If 
component damage is found a damage 
claim must be filed by the receiving party 
against the delivery party immediately. 

  This product is designed and 
manufactured to permit installation in 
accordance with national codes. It is the 
installer’s responsibility to install the 
product in accordance with national 
codes and/or prevailing local codes and 
regulations.  
  Care must be taken to ensure the 
structural integrity of the supporting 
members, clearances and provisions for 
servicing, power supply, coil connections 
and/or condensate removal. Before the 
installation ensure the structural strength 
of the supporting members is sufficient. 
See figure 1 for hanging weights of the 
fan coils.  
 This unit is designed to be installed in a 

-------------------------------------- CAUTION -------------------------------------- 

Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and could 
cause injury.  

horizontal configuration only. See figure 2 
for fan coil and mounting plate dimensions. 

   

FAN COIL  

APPROXIMATED 

MODEL NUMBER 

WEIGHTS (lbs) 

MHWX-09-C-1 20.00 

MHWX-12-C-1 22.00 
MHWX-18-C-1 35.60 
MHWX-24-C-1 37.40 

MHWX-36-C-1 54.00 

    

                           Figure 1 

Summary of Contents for MHWX-09-C-1

Page 1: ...Direct Expansion Fan Coil 9 000 36 000 BTUH Hi Wall Fan Coil 344 MHWX Direct Expansion...

Page 2: ...HWX 18 H 1 MHWX 24 C 1 MHWX 24 H 1 MHWX 36 C 1 MHWX 36 H 1 345 09 9 000 12 12 000 18 18 000 Available Model Numbers MHWX NOMENCLATURE BREAKDOWN Direct Expansion Direct Expansion Hi Wall Fan Coil MHWX...

Page 3: ...ory assembled direct expansion fan coil 2 Shall be assembled with high quality 3 Contained with the unit shall be all factory wiring piping associated controls and special accessories required prior t...

Page 4: ...ansformer and wireless remote D Controls shall be capable of incorporating an optional hard wired thermostat 3 02 Safeties A Fan coil shall contain a non reusable fuse on the secondary voltage side of...

Page 5: ...0 57 10 8 50 54 00 3 18 3 8 3 8 5 8 3 4 Electrical Data Fuse or HACR Circuit Breaker Per Circuit Model Number Hi Speed CFM Volts Phase Hertz Motor HP Full Load Ampacity Minimum Amps Maximum Amps MHWX...

Page 6: ...349...

Page 7: ...gned and manufactured to permit installation in accordance with national codes It is the installer s responsibility to install the product in accordance with national codes and or prevailing local cod...

Page 8: ...plied Hole L Field Supplied Hole MHWX 09 34 6 11 7 7 5 7 5 3 5 2 7 1 6 0 8 1 8 0 8 2 8 2 8 MHWX 12 39 0 12 0 7 5 7 5 3 6 2 7 1 5 1 1 1 7 1 0 2 8 2 8 MHWX 18 46 0 14 2 3 8 3 8 6 1 2 4 2 4 1 7 2 4 1 8 2...

Page 9: ...3 2 Drill the holes for the type of mounting hardware to be used Check local building codes for correct mounting hardware Secure the mounting plate and check for stiffness 3 Drill a diagonal piping ac...

Page 10: ...mproper insulation could result in voided warranty and or building damage Figure 6 2 There is a piping channel in the bottom portion of the back of the units for crossover piping drain condenser contr...

Page 11: ...ounting plate by first sliding the fan coil onto the two notches provided on the mounting plate Figure 9 10 6 Push the bottom of the fan coil towards the wall in order to engage the locking clips Figu...

Page 12: ...355 INSTALLATION OPERATING MANUAL MHWW Hi Wall Fan Coils 9 000 36 000 BTUH MHWX CONTROLS OPERATION GUIDE Wireless Control Standard Control Package Page 355 Optional Wired Control EG 003 Page 361...

Page 13: ...direct sunlight or any place where it is very hot Remove batteries when the remote controller is not in use for extended periods of time The remote controller should be placed 3 or more feet away from...

Page 14: ...Fan only No cooling or heating capability AUTO Operation mode will be selected automatically between HEAT and COOL mode depending upon the room temperature and SET temperature 4 FAN To select fan spee...

Page 15: ...ur up to a maximum of 18 hours To set the OFF DELAY With the system in operation enter the system OFF time by pressing the button to the desired number of hours ahead that the system will be allowed t...

Page 16: ...hours of the SLEEP CYCLE SLEEP FUNCTION DISPLAY 10 DRY This function operates to control humidity within a conditioned space It measures the difference between set point and the actual room temperatur...

Page 17: ...sent auto mode is heating a switch to cooling operation will begin only when the room temperature is 3 above selected control set point 12 TRANSMISSION INDICATOR Blinks twice to indicate that transmis...

Page 18: ...er as shown COOL Cooling operation HEAT Heating operation FAN Fan only No cooling or heating capability AUTO Operation mode will be selected automatically between HEAT and COOL mode depending upon the...

Page 19: ...VER Two different functions are available 1 To set the louver stop position There are 4 angles available The sequence is as follows 2 To set the louver swing continuous motion The sequence is as follo...

Page 20: ...363 MHWX 09 H 1 MHWX 12 H 1 Wiring Diagram 208 230 1 50 60...

Page 21: ...364 MHWX 18 H 1 Wiring Diagram 208 230 1 50 60...

Page 22: ...365 MHWX 24 H 1 Wiring Diagram 208 230 1 50 60...

Page 23: ...366 MHWX 36 H 1 Wiring Diagram 208 230 1 50 60...

Page 24: ...367 MHWX 09 C 1 MHWX 12 C 1 Wiring Diagram 208 230 1 50 60...

Page 25: ...368 MHWX 18 C 1 Wiring Diagram 208 230 01 50 60...

Page 26: ...369 MHWX 24 C 1 Wiring Diagram 208 230 1 50 60...

Page 27: ...370 MHWX 36 C 1 Wiring Diagram 208 230 1 50 60...

Page 28: ...371 MHWX CERTIFIED DRAWING...

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