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Summary of Contents for KING MAU
- Page 1 _____________________________________________________________________________ INSTALLATION AND OPERATING MANUAL MAU – MAKE UP AIR UNIT...
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Page 2: Product Description
MAU Installation Manual PRODUCT DESCRIPTION The King make up air unit (MAU) is a packaged unit comprised of a fan driven fully modulating electric heating unit with a fresh air relay logic control circuit providing an extremely versatile all- in-one packaged unit. It is designed to supplement other HVAC equipment by providing quality indoor air into the return side or supply side of the ductwork system or alternatively directly into the building space. - Page 3 If the limit control continues to cycle on and off, then a qualified contractor must examine the MAU to find out the source of the problem and repair it. If the unit is damaged or defective, cut off power supply at circuit breaker/fuse immediately and do not use the unit until it is repaired.
- Page 4 System shall be installed to bring in fresh air directly from outdoors. 5. Do not install the MAU and supply ductwork directly above or closer than 36 inches to any furnace or its supply plenum, boiler, or other heat producing appliance.
- Page 5 MAU Installation Manual MAU DIMENSIONS PAGE 1 Page...
- Page 6 MAU Installation Manual MAU DIMENSIONS PAGE 2 Page...
- Page 7 MAU Installation Manual HORIZONTAL MOUNTING ILLUSTRATION VERTICLE MOUNTING ILLUSTRATION Page...
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Page 8: Mounting Of Unit
Insulate the inlet ducts only, it is not necessary to insulate the outlet ducts as they are heated by the MAU. The inlet damper and insulated inlet piping will prevent cold air migration and a slight incline will keep moisture collection at the inlet end. - Page 9 DIRECT DUCTING INSTALLATION The MAU can be installed to have its own dedicated outdoor fresh air duct system that is filtered, 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.
- Page 10 MAU Installation Manual DIRECT DUCTING ILLUSTRATION 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 RETURN 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.
- Page 12 MAU Installation Manual AIRFLOW DESIGN PARAMETERS The King MAU has a wide range of airflow options that can be field adjusted to match the needs of a specific installation. Providing fresh air into a building has several design parameters that must be taken into consideration: 1.
- Page 13 1,107 1,043 ** Represents the voltage, 20=208V, 24=240V, 48=480V. Voltage of MAU does not affect the data in this table. NR = Not Recommended, Temperature Rise is above maximum design parameter. The highlighted cells are the factory default torque setting for each model. The EMC motor has 5 field adjustable torque settings, allowing for a wide range of design choices.
- Page 14 1,487 1,415 ** Represents the voltage, 20=208V, 24=240V, 48=480V. Voltage of MAU does not affect the data in this table. NR = Not Recommended, Temperature Rise is above maximum design parameter. The highlighted cells are the factory default torque setting for each model. The EMC motor has 5 field adjustable torque settings, allowing for a wide range of design choices.
- Page 15 MAU Installation Manual LINE VOLTAGE ELECTRICAL CONNECTIONS Refer to the wiring diagram provided with the MAU for the supply line connection points, typically a two or three pole contactor marked L1, L2, L3 and Ground. Size the wire gage suppling the unit per the NEC building wire ampacity standards and protect the supply circuit with the appropriately sized circuit breaker or fuse.
- Page 16 MAU Installation Manual TECHNICAL ELECTRICAL DATA CHART Page...
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Page 17: Low Voltage Control Wiring
MAU low voltage terminal strip. List of control features: 1. R1-R2, ON/OFF control of the MAU. Closing this circuit via a dry contact will turn on the fan and the modulating heating circuit. This is often done by a building management system, but other common methods are to be activated by a current transformer (CT) on an exhaust fan, a timer, or a manual switch. - Page 18 0 to 10 Vdc output, one 8 Vdc and one 24 Vac proportioning pulsed output. The King MAU uses the analog 0 to 10 Vdc modulating output to control the room or supply air temperature by modulating directly a 0 to 10 Vdc SCR power controller.
- Page 19 The filter housing is shipped 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”...
- Page 20 MAU Installation Manual START UP PROCEDURE and TROUBLE SHOOTING 1. Apply power to the MAU. a. Verify with a voltmeter on the line side of the contactor lugs that the proper voltage is present and phases correctly. 2. If the lockout circuit is being used close the auxiliary devices or jumper across L-L to test the unit.
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Page 21: Maintenance
3. Dust the device regularly to prevent dust from accumulating, which could cause the device to overheat. 4. Disconnect the power supply to the circuit breaker/fuse before cleaning the unit. If the MAU is located in a dusty area, use a vacuum cleaner to thoroughly clean the unit. Page...
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