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KWEBER

MUC Multi Use Controller

INSTALLATION INSTRUCTIONS

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Содержание MUC

Страница 1: ...KUTZNER WEBER MUC Multi Use Controller INSTALLATION INSTRUCTIONS ...

Страница 2: ...l 7 c Battery Installation and Removal 9 d GFS Differential Air Pressure Switch Exhaust Applications GF GH 10 e CS75 Current Switch Supply Air System SA 13 e GFS Differential Air Pressure Switch Supply Air System SA 15 5 Operation 19 a Modes 19 b Inputs and Outputs 22 c Flow Chart 24 c Troubleshooting 25 6 Reference List 26 ...

Страница 3: ...nal state and local codes They will supersede this document WARNING No installation use or maintenance should be done in an explosive or hazardous environment Introduction The Multi Use Controller MUC is an intelligent easy to install wall mounted device that is a constant speed controller used to safely exhaust or provide supply air to gas or solid fuel fired fireplaces and heating appliances Des...

Страница 4: ...ure Wall mount enclosure 3 3 w x 4 7 h x 1 15 d 84 x 119 x 29 mm Relay Output Contact Ratings Form C contact N O N C 5 Amps 250 VAC 5 Amps 30 VDC Slide Potentiometer Front panel pot is two wire resistive output 0 10 K standard Analog Output 0 10 VDC Audio Mute Switch Front panel push button dry contact LEDs Red LED Super Bright Low Current Green LED Super Bright Low Current Audio Buzzer 3V 2700 Hz...

Страница 5: ... tubing iv Power supply 24 VDC b GH gas heating appliance system i Draft inducer vent fan 1 VFD included with induction motors ii GFS differential air pressure switch iii Vent probe and tubing iv Power supply 24 VDC c SA supply air system i Supply fan ii CS75 current switch iii Power supply 24 VDC d SF solid fuel fireplace system i Draft inducer vent fan ii Power supply 24 VDC 3 Optional Additiona...

Страница 6: ...e first Use a small screwdriver to carefully pry each bottom corner if necessary If a security screw is installed on the bottom edge then it may have to be loosened or removed also Tip the cover away from the base and set it aside The MUC must be removed from the base to access the mounting holes Follow normal anti static procedures when handling the MUC and be careful not to damage any components...

Страница 7: ... used to supply inductive loads such as motors Disconnect the power supply before making any connections to prevent electrical shock or equipment damage Follow proper electrostatic discharge ESD handling procedures when installing the device or equipment damage may occur 24 VDC From GFS Pressure Switch 24 V To Fan Motor Speed Input Damper Relay ENABLE Gas Relay Green LED RUN Red LED Fail Battery T...

Страница 8: ...eration Many appliances have a dry contact to enable external devices louvers pumps etc built into the appliance control system Those that don t may require a relay to be field installed within the appliance to provide the necessary dry contact for the Enable remote signal to the MUC Note Install a jumper between 24V to ENABLE when remote operation is not required Relay Wiring The MUC relay output...

Страница 9: ... the MUC as illustrated in figure 3 ensuring that the positive terminal is facing upwards To remove the battery tray from the battery holder on the MUC simply push on either the bottom or top battery tray tab to pop the tray slightly out from the battery holder on the MUC and then pull the tray out from the battery holder as illustrated in figure 3 Battery Removal 1 Push either tab to pop battery ...

Страница 10: ...ectly and that the shipping cap is removed from port s Install the vent probe as close to the fan as possible on a fireplace system figure 5 On a gas heating appliance vent system install the vent probe in the common figure 6 Then connect the pressure tubing between the vent probe and the P2 port on the GFS pressure switch Use the supplied high temperature 0 170 I D flexible tubing for the pressur...

Страница 11: ... E R M I N A T I O N F A N 1 M A X I M U M P E N E T R A T I O N P R E S S U R E T U B I N G T Y P I C A L E X H A U S T F L U E T Y P I C A L B O I L E R W A T E R H E A T E R V E N T P R O B E G F S P R E S S U R E S W I T C H P L E F T O P E N T O R O O M P F L O W T O F A N A L T E R N A T I V E V E N T P R O B E P L A C E M E N T E X H A U S T F L U E 1 8 0 V E N T P R O B E M A Y A L S O B E...

Страница 12: ...asing pressure Connections for GFS MUC Terminal To GFS Terminal 24V DC 3 Prover 2 Switching Pressure Adjustment Caution Make absolutely sure that no voltage is applied to the electrical connections before any settings on the pressure switch are carried out Set the desired pressure which trips the switch at decreasing pressure on the setting button using a screwdriver When the pressure falls the sw...

Страница 13: ...ot mount the switch on uneven hot or extreme vibrating surfaces Mount the CS75 using two screws through the holes in the base Install within an appropriate electrical enclosure Do not tighten the screws too much in order to avoid damaging the CS75 base Electrical Caution danger to life Make absolutely sure that all voltage sources are secured before making any electrical connections Disconnect the...

Страница 14: ...slightly more to eliminate false switching Test setting using a voltmeter across the contacts to verify switch operation Disable the MUC controller The supply fan should go into standby mode The CS contacts should open and the LED off If not readjust the CS switch and retest After passing this test the CS is now set to detect the supply fan operational condition For applications with very small lo...

Страница 15: ... WC with a maximum adjustment range between 0 08 to 0 8 WC The switch should be adjusted for the specific installation and site conditions for proper system operation Mounting Check the pressure switch for damages Do not use if damaged Do not mount the pressure switch on uneven hot or vibrating surfaces Do not tighten the screws too much in order to avoid deforming of the device s base Mount the p...

Страница 16: ...ible tubing for the pressure connections Option 2 low pressure applications Connect the tubing between the pressure probe on the discharge side of the supply fan outlet or duct and the P1 on the GFS Install a second pressure probe on the inlet side of the fan or duct Connect additional pressure tube to the P2 port Arrange the tubing to minimize stress on the connections and ensure there are no kin...

Страница 17: ...rical codes Make and verify connections per supplied system wiring diagram Note This is a low voltage circuit Do not run low voltage conductors with high voltage conductors Insert a conduit tube with 1 2 thread and tighten with a torque of 2 5 Nm Assemble flex and conductors accordingly The connections are intended for 0 25 6 3 mm crimp type sockets The switch P in the pressure switch is designed ...

Страница 18: ...into its resting position as soon as the pressure falls below the set switching differential Place the cover and screw it to the pressure switch Do not operate the system until the housing is closed Check the trip and reset pressure by slowly increasing and decreasing pressure Switch should be adjusted so that it makes upon supply fan enabling and opens when supply fan stops If more switch sensiti...

Страница 19: ...oth the gas relay and damper relay into the normally open position Run Mode 2 Enable Input When the MUC Enable input terminal is energized and the slide pot is 2VDC it will turn on the green LED and energize the damper relay to the closed position The gas relay will still remain in the normally open position until the PROVER circuit input is energized by 24VDC the motor ON voltage feedback is 4 VD...

Страница 20: ...e closed position during Fail Mode The MUC will automatically reset and resumes normal operation once the alarm condition clears If the MUC should receive the missing feedback signal while in the Fail Mode for at least 2 seconds then the MUC will return to the Run Mode and will deactivate the red LED and alarm buzzer activate the green LED and drive the gas relay to the closed position During Fail...

Страница 21: ...e If the power loss event exceeds 10 minutes then the MUC will disable all functionality and will be considered in Off Mode When power is resumed the MUC will reestablish the proper mode based upon the state of the control potentiometer and Enable input If the power loss event timer is not exceeded the MUC will enter back into the mode of operation it was in prior to the power loss event depending...

Страница 22: ...nd is set by the slide potentiometer mounted on the unit Adjusting the slide potentiometer to the right enables the MUC and increases the fan speed Adjusting the slide potentiometer to the left will decrease motor speed until the signal output is 1 5VDC which places the MUC into Off mode RPM Frequency Monitoring The MUC will provide a constant 5VDC excitation voltage to the fan motor to receive ba...

Страница 23: ...s two colored LEDs to indicate RUN and FAIL conditions These LEDs are also be used to indicate battery status and audio alert mute status When the green LED flashes during the RUN mode this is a low battery voltage status and indicates the batteries should be replaced Green Red Indication OFF OFF Not running ON OFF Running normally FLASHING OFF Running Battery voltage level low OFF ON Fail mode ac...

Страница 24: ... normally without motor RPM frequency feedback Enable input energized and Pot output is 2 0 VDC Potentiometer 0 10 VDC Out Standby no outputs LED OFF NO Pot output 1 5 VDC Enable input not energized Control Enabled YES YES Gas Relay opens alarm function disabled and post purge timer begins 60 sec off delay Timer expired NO Gas Relay and alarm on delay 15 seconds Analog 0 10 VDC output set to pot V...

Страница 25: ...een the 24V terminal and the COM terminal 2 Verify the ENABLE input has 24VDC 3 Check Back Up batteries Red LED On Fail Mode 1 Check PROVER circuit 2 Check MSTAT circuit 3 Check RPM feedback circuit 4 Check fan operation Green LED Flashing 1 Replace batteries LED Chart Green Red Indication OFF OFF Not running ON OFF Running normally FLASHING OFF Running Battery voltage level low OFF ON Fail mode a...

Страница 26: ... e References KW All Fan Models Installation and Operation Manuals KW CS75 Current Switch Installation and Operations Instructions KW GFS Differential Air Pressure Switch Installation and Operations Instruction Sheets ...

Страница 27: ...MUC IOM 27 P a g e Notes ...

Страница 28: ...MUC IOM 28 P a g e Distributed by RM Manifold Group Inc 120 S Sylvania Ave Suite A Fort Worth TX 76111 P 817 393 4029 ...

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