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INSTALLATION AND OPERATING MANUAL

MAU – MAKE UP AIR UNIT

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Summary of Contents for MAU

Page 1: ..._____________________________________________________________________________ INSTALLATION AND OPERATING MANUAL MAU MAKE UP AIR UNIT ...

Page 2: ...isused or neglected or not maintained per industry standards 5 The equipment is not operated within its published requirements and standards 6 The installer is not authorized to make any modifications to the MAU the unit without factory consent The installer will be held responsible for any damage resulting from this modification and the UL certification could be void King shall not be liable for ...

Page 3: ...part of the unit has been immersed Moreover do not turn it on or off when standing in water or if your hands are wet 12 The unit can be hot when in use it may pose a burn risk even under normal operation To avoid burns do not let bare skin touch any hot surfaces Let the unit cool down for a before handling or servicing it 13 Do not block the intake air or discharge air ducts This obstruction could...

Page 4: ...the filters have been installed 8 The MAU must be installed in an accessible location which allows for regular inspection and maintenance 9 The HVAC designer contractor must take into consideration the effects that the supply of outdoor air by the MAU will have on the building s comfort and mechanical systems The HVAC designer should know the makeup air system s frequency and duration of use as we...

Page 5: ...MAU Installation Manual Page 5 MAU DIMENSIONS PAGE 1 ...

Page 6: ...MAU Installation Manual Page 6 MAU DIMENSIONS PAGE 2 ...

Page 7: ...MAU Installation Manual Page 7 HORIZONTAL MOUNTING ILLUSTRATION VERTICLE MOUNTING ILLUSTRATION ...

Page 8: ...let 2 Select the inlet and outlet ducting size in accordance to the system design requirements 3 Plan the simplest system using the least number of elbows and joints Keep the length of insulated ducts to a minimum to prevent a choke point and improve ventilation 4 Use only rigid metal ducts 5 Do not install elbows less than twice the diameter of the MAU duct 6 In cold climates frost and or condens...

Page 9: ...d pre heated and then is distributed DIRECTLY to each room and hallway through register grills In this way it acts independently to the primary heating system that could be hydronic electric zonal heat or a centralized HAVC system When installed as a direct system make sure the Temperature rise is sufficient to bring adequate warm tempered air into the building For example in a cold climate when t...

Page 10: ...ON HVAC RETURN and SUPPLY AIR DUCTING CONNECTION The second method consists of using the furnace distribution system to distribute fresh air There are two methods of connecting the device to the furnace Supply air side connection or Return air side connection ...

Page 11: ...URN CONNECTION Cut an opening in the return air duct at least 3 feet from the furnace Connect this opening to the MAU SUPPLY CONNECTION Cut an opening in the supply air duct at least 2 ft from the furnace Connect this opening to the MAU ...

Page 12: ... external static pressure measure pressures where air enters and leaves the MAU equipment Add the two readings together to find total external static pressure Make sure not to exceed the external static pressures listed in the design tables doing so will cause harm the equipment 3 Temperature rise or Delta T is the difference between the incoming air temperature and the discharge temperature of th...

Page 13: ... 1 116 28 1 060 30 1 016 31 987 32 20 0 1 582 20 1 536 21 1 462 22 1 380 23 1 275 25 1 192 27 1 107 29 1 043 30 6 8 832 46 708 54 593 64 510 74 442 86 374 101 320 NR 278 NR 9 4 1 030 37 919 41 826 46 739 51 658 58 594 64 546 69 494 77 12 0 1 168 32 1 085 35 992 38 902 42 835 45 783 48 736 52 700 54 17 0 1 376 28 1 320 29 1 259 30 1 189 32 1 116 34 1 060 36 1 016 37 987 38 20 0 1 582 24 1 536 25 1 ...

Page 14: ...50 1 570 50 1 564 51 1 363 58 1 347 59 1 284 62 1 256 63 1 200 66 1 152 69 26 0 1 690 47 1 679 47 1 640 48 1 546 51 1 472 54 1 430 55 1 378 57 1 358 58 1 315 60 30 0 1 771 45 1 766 45 1 723 46 1 728 46 1 569 50 1 542 51 1 522 52 1 487 53 1 415 56 15 5 1 258 75 1 262 75 1 193 79 1 132 84 1 054 90 910 104 834 NR 821 NR 705 NR 19 0 1 466 65 1 419 67 1 300 73 1 285 74 1 218 78 1 180 80 1 015 93 979 97...

Page 15: ...TPUT OUTPUT INPUT 3 24 VAC 2 COMMON 1 L2 L1 T2 T1 S1 S2 S3 S4 A0 24V HOT 24V COM R1 R2 L L G EF 24V EF COM D 24V D COM TERMINAL BLOCK HIGH LIMIT BLU YEL BLK WHT BLU YEL BLK WHT CONTROL RELAY 1 3 6 5 4 2 24V SSR JUMPER MAKE UP AIR UNIT 3 PH 6 ELEMENTS ECM MOTOR 2 SOLID STATE RELAYS 2 CIRCUIT BREAKERS PORORTIONAL THERMOSTAT LOCKOUT EXHAUST FAN DAMPER BLK CPT 1 BLK CPT 2 CR 5 WHT CPT 2 WHT CPT 1 BLK ...

Page 16: ...MAU Installation Manual Page 16 TECHNICAL ELECTRICAL DATA CHART ...

Page 17: ...10VDC that drives the SSR to modulate the heat output 3 DS DS DUCT SENSOR the field installed duct sensor is connected to thermostat for controlling and maintaining the output temperature type 2 NTC thermistor 10K ohms 4 24V HOT 24V COM these are the 24VAC connections to the modulating thermostat 5 L L LOCKOUT CIRCUIT the controller can be wired to an optional outdoor thermostat and or a humidista...

Page 18: ...y are closed Typically used to turn on an exhaust fan by applying power to a relay coil 6 24VAC power is provided to D D when R1 R2 Heat or R1 G Fan only are closed Used to open a 24VAC motorized Damper with spring return DS DS Mount the Duct Sensor a minimum of 3 ft from the MAU supply side MODULATING THERMOSTAT CONTROL The VT7225 series controllers are microcomputer based proportional and integr...

Page 19: ...separately to be field installed The filter housing is mounted to the intake side the MAU which is the same side as where the blower is mounted The filter can accept a 1 or 2 thick 16 by 20 filter Install the 1 filter brackets when using a 1 thick filter Please refer to the assembly drawings below ...

Page 20: ...orking limit switch it can create a dangerous overheating situation d If the High limit is working check the element high temperature limits that are wired in series one per element check for continuity across the string and then individually these are normally closed devices if an open limit is found replace it 7 Check that the 24VAC power is present across D 24V D com this is the damper circuit ...

Page 21: ... section of the King MAU MAINTENANCE Very little maintenance is required for the MAU to keep it functioning properly throughout the year 1 It is recommended to clean the exterior hood of the fresh air intake once a year 2 Replace the air filter every 6 months Shut off the unit before removing the filter 3 Dust the device regularly to prevent dust from accumulating which could cause the device to o...

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