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Related Manuals for Kutzner + Weber MUC
Summary of Contents for Kutzner + Weber MUC
- Page 1 KUTZNER +WEBER MUC Multi Use Controller INSTALLATION INSTRUCTIONS...
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Page 2: Table Of Contents
MUC IOM Contents 1. Introduction 2. Specifications 3. Component List 4. Installation a. Mounting b. Electrical c. Battery Installation and Removal d. GFS Differential Air Pressure Switch Exhaust Applications (GF/ GH) e. CS75 Current Switch Supply Air System (SA) e. GFS Differential Air Pressure Switch Supply Air System (SA) 5. -
Page 3: Introduction
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. Designed for use with electronically... -
Page 4: Specifications
MUC IOM Specifications Power Supply 24 VDC (non-isolated half-wave rectified) Consumption 32 mA max @ 24 VDC (Run Mode) Protection Circuitry Reverse voltage protected, overvoltage protected Operating Conditions 4-32 C (40-90 F), 20-80 %RH non-condensing Wiring Connections Screw terminal block (14 to 22 AWG) Enclosure Wall mount enclosure, 3.3”w x 4.7”h x 1.15”d... -
Page 5: Component List
MUC IOM Component List The MUC system is made up of several components dependent on the application: 1. MUC Controller 2. System Application Components a. GF : gas fireplace system i. Draft inducer / vent fan 1. VFD included with induction motors ii. -
Page 6: Installation
MUC and be careful not to damage any components. The MUC is removed by pressing the enclosure base to unsnap the latch near the bottom edge, then the MUC can be lifted out of the base. Sit the MUC aside until the base is mounted. -
Page 7: Electrical
MUC IOM Electrical The MUC may be wired for different applications. Review the supplied wiring diagram(s) and verify the application before attempting to connect the MUC to any associated components or equipment. Follow all local electrical and safety codes, as well as the National Electrical Code (NEC) and the National Fire Protection Agency (NFPA), where applicable. - Page 8 MUC IOM Power Connections The MUC requires a 24 VDC power supply to operate. The device has a half-wave type power supply so the power supply common is the same as the output signal common. Several devices may be connected to one power supply and share the same signal common.
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Page 9: Battery Installation And Removal
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. -
Page 10: Gfs Differential Air Pressure Switch
MUC IOM GFS Differential Air Pressure Switch Installation Systems with a gas heating appliance or gas log set require a GFS differential air pressure switch to prove fan function and available draft in the venting system. 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. - Page 11 MUC IOM GFS Differential Air Pressure Switch Installation Figure 5 C B T 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...
- Page 12 0.25" (6.3 mm) crimp-type sockets. The switch (P) in the pressure switch is designed as a change-over contact. Pole 3 (COM) closes to pole 2 (NO) at increasing pressure and to pole 1 (NC) at decreasing pressure. Connections for GFS MUC Terminal GFS Terminal 24V (DC) ↔...
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Page 13: Cs75 Current Switch
MUC IOM CS75 Current Switch for Supply Fan Installation The CS75 current switch monitors line current of the supply fan for proof of operation. The switch closes the output contacts and energizes an onboard LED when the adjustable trip point is exceeded. The CS75 factory set trip point is 0.75A with a maximum adjustment range between 0.75 to 75A. - Page 14 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.
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Page 15: Gfs Differential Air Pressure Switch
MUC IOM GFS Differential Air Pressure Switch for Supply Fan Installation The GFS differential air pressure switch can be used as an alternate or complementary device to the CS75 current switch for supply fan applications. The GFS differential air pressure switch monitors outlet pressure of the supply fan for proof of operation. - Page 16 MUC IOM GFS Pneumatic Connections for Supply Fan (continued) Pneumatic Connections Remove plastic shipping cap(s) from the pressure port(s) on the end of the enclosure labeled P1(+) and P2(-) (Figure 10). Option 1: Connect the tubing between the pressure probe on the discharge side of the supply fan outlet or duct and the P1(+) on the GFS (Figure 11).
- Page 17 The connections are intended for 0.25" (6.3 mm) crimp-type sockets. The switch (P) in the pressure switch is designed as a change-over contact. Pole 3 (COM) closes to pole 2 (NO) at increasing pressure and to pole 1 (NC) at decreasing pressure. Connections for GFS MUC Terminal GFS Terminal 24V (DC) ↔...
- Page 18 MUC IOM GFS Differential Air Pressure Switch for Supply Fan (continued) Switching Pressure Adjustment Caution, danger to life! 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 increasing pressure, on the setting button using a screwdriver.
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Page 19: Operation
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. -
Page 20: Modes
During Fail Mode, an override (Mute/Silence) switch, when depressed will deactivate the audio buzzer for 2 minutes. After 2 minutes if the MUC is still in Fail Mode, the audio buzzer will be activated. Muted audio alert mode will flash the red LED with a 50% duty cycle. - Page 21 Mode. A total loss of power will result in the gas relay and the damper relay going into the normally open positions thus disabling the gas valve actuator and damper actuator. If the MUC was in the Off Mode at the start of a power loss event, the MUC will not enter Back Up Mode.
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Page 22: Inputs And Outputs
The MUC has an Enable terminal point that receives a constant 24VDC signal for normal operation but if disconnected by a remote switch the MUC immediately disables the gas relay. After a 60 second delay the MUC enters the OFF mode without regard to the slide pot position. - Page 23 MUC IOM Operations - Inputs and Outputs Motor Status Feedback Voltage A voltage feedback signal of 5VDC is be provided to the MUC for fan status. The motor ON status feedback threshold is >4VDC This input is ignored in OFF mode.
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Page 24: Flow Chart
Frequency input ≥ 150 HZ ------------------------- Running If By-pass jumper Gas Relay is in the “on” closed position this function is ignored by MUC and runs normally without motor RPM frequency feedback 24 | P a g e ... -
Page 25: Troubleshooting
6. Check fan motor 1. Check supply voltage between the 24V terminal and the COM terminal MUC will not run 2. Verify the ENABLE input has 24VDC 3. Check Back Up batteries 1. Check PROVER circuit 2. Check MSTAT circuit Red LED On (Fail Mode) 3. -
Page 26: Reference List
MUC IOM References All Fan Models Installation and Operation Manuals CS75 Current Switch Installation and Operations Instructions GFS - Differential Air Pressure Switch Installation and Operations Instruction Sheets 26 | P a g e ... - Page 27 MUC IOM Notes 27 | P a g e ...
- Page 28 MUC IOM Distributed by: RM Manifold Group, Inc. 120 S. Sylvania Ave., Suite A Fort Worth, TX 76111 P. 817-393-4029 28 | P a g e ...
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