Herrmidifier Herrtronic MDD - Manual (Page 8)

Herrtronic ® MDD Supplement
I n s t a l l a t i o n , O p e r a t i o n , & M a i n t e n a n c e M a n u a l
8 www.herrmidifier-hvac.com
Figure 7 - Electrical Compartment
VIII. FACTORY WIRING BETWEEN THE MASTER AND SLAVE CONTROLS
Dependent Controls: Factory Wiring Included the Following:
1. Jumpers between Master terminal strip, terminals 11 & 12 to the Slave terminal strip, terminals 11 & 12. This wiring allows com-
munication from the Master to the Slave via the Master Keypad, utilizing the communication functions of Menu 4 in the Master
menu.
2. Jumpers between Master terminal strip, terminal 2 to the Slave terminal strip, terminal 2. This wiring allows the use of an optional
air flow switch wired to the Slave terminal strip. This wire would negate the use of second air flow switch.
3. For Proportional and Proportional/Integral Control Units Only (See MDD wiring diagram). Wiring from the Master Molex connec-
tor J1, terminals 1 & 2 to the Slave terminal strip, terminals 4 & 5. This wiring passes the humidity sensor or BMS control input
that has been received by the Master to the Slave control board. This allows the Slave to “share” the control input with the Master
and operate in parallel with the Master.
4. For On/Off Control Units Only (See MDD wiring diagram). Wiring from Master terminal strip, terminal 5 to the Slave terminal
strip, terminal 5. This wiring passes the On/Off control signal that has been received by the Master to the Slave control board.
Independent Control: Factory Wiring Includes the Following:
1. Jumpers between Master terminal strip, terminals 11 & 12 to the Salve terminal strip, terminals 11 & 12. This wiring allows
communication from the Master to the Slave via the Master keypad, utilizing the communication functions of Menu 4 in the
Master menu.
IX. TURNING THE MASTER AND SLAVE “ON” AFTER SERVICING THE UNIT
During servicing, the Master and Slave cabinet access doors are typically removed to gain access to the unit. Both of these cabi-
nets have a door interlock switch for safety purposes. Whether the door interlock switches are taped closed or jumped-out during
service, when the tape/jumpers are removed from the interlock switches, and the cabinet access doors are re-installed following
maintenance, BOTH THE MASTER AND SLAVE MUST BE TURNED “ON” at the keypad to put the unit back in service. Both the
Master and Slave must be in the Menu 1 default menu for “on/off” button to work. If only the Master is turned ON, the Slave cabinet
will remain inoperative.
Prevent the unit from operating at only 50% capacity by ensuring that BOTH THE MASTER AND SLAVE ARE
TURNED “ON” after servicing the equipment.
Options for Turning ON/OFF Slave:
1. Use “Slave” On/Off button
2. Use “Master” Keypad to address “Slave” via communications. (Menu #4)
8 2 6 4 12 10
1 3 5 7 11 9 7 5 3 1
2 4 6 8
11 9
12 10
1 3 2 4 6 5 1 3 2 6 5 4
A TRION Company HERRMIDIFIER
EST
1
003PB
PCB Control
3 VAC 4
24
50/60 Hz 50 to 600 VAC 2
EST
1
4 3
003PB
50 to 600 VAC 50/60 Hz
24 VAC Control PCB
2
FOLLOW TORQUE REQUIREMENTS LISTED ON THE SIDE OF THE POWER BLOCK.
WARNING
TO REDUCE THE RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE 4 AMP FUSE.
WARNING
TO REDUCE THE RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE 2 AMP FUSE.
SLAVE BOARD
MASTER BOARD
COMMON DISPLAY
MASTER TERMINAL STRIP
SLAVE TERMINAL STRIP
USE COPPER CONDUCTORS ONLY
DISCONNECT THE POWER CAUTION:
ELECTRIQUE AVANT L'ENTRETIEN CIRCUIT D'ALIMENTATION
SUPPLY BEFORE SERVICING ATTENTION: DECONNECTER DU
CAUTION
USE SUPPLY WIRING SUITABLE FOR 90°C
Conforms to
CORTLAND, NEW YORK 13045 ETL TESTING LABORATORIES, INC. ANSI/UL-998 R LISTED 33964
HUMIDIFIERS ETL LISTED
HERRTRONIC
SANFORD, NC USA TRION INC.
AMPS
SER.NO.
MAX.
VOLTS/Ph/Hz
MODEL NO.
DATE
MAX. LBS/HR
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