System Controller SC-201-6M INT Installation Manual Potential dangers from accidents during installation and use are divided into the following two categories. Closely observe these warnings, they are critical to your safety. WARNING NOTICE Denotes content that may result in fire, serious bodily injury and even death when ignored. Denotes content that may result in bodily injury and physical damage when ignored.
Multi-System Wiring *N-132M(-ASME),N-1321M-ASME, NC380-SV-ASME N-084M(-DV)(-ASME),N-0841MC(-DV),NCC199-SV(-DV) N-0842MC(-DV) NC199-OD(-DVC) N-0931M(-DV, -OD)(-ASME) ,NC250-SV(-DV)-ASME only Unit 1 *Connect these to the remote control terminal block in each unit No.6 Disconnect this connector System Controller No.5 No.4 Disconnect for system controller No.3 No.
System Select Connectors If this system will be installed with a recirculation system, a storage system, or with a filtration system, plug the selecter in to the connector that corresponds to that type of system. *If none of these circulating systems are used, do not connect the selecter. (1) If the units will be installed in a recirculation system: Connect the selecter to the connector labeled "Recirculation System" (1).
Circulation Pump Terminals • Use these terminals to control the pump in any circulating system. Connected this way, the system controller will control the function of the pump. • Use a normally open relay to supply power to the pump. Use a thermal relay if necessary. (1) When operating with 1 circulation pump AC Power Supply AC100-240V Under 100W Warning Light Warning Light Single phase AC120V or Three phase AC240V pump voltage etc.
Exhaust Fan Terminal • These terminals will close when any of the units are heating or when the fan on any of the units is blowing. These terminals can be used to control an exhaust fan or damper in this way. • Use a relay to provide power to the fan or damper. Use an additional thermal relay if necessary.
-6- Unit No.2 Unit No.1 (1 1/4"-2") Cold Water Supply Pipe G Gas pipe Remote Controller System Select Connector * Do not connect to the connector. Disconnect this Connector * Disconnect this connector on units 2-6 also. "Disconnect for system controller" tag • Insulate or apply heating materials to both the cold water supply piping and the hot water piping to prevent freezing during cold weather and to prevent heat loss through the piping. (1 1/4"-2") Hot Water Pipe Unit No.
-7- Hot Water Supply Hot Water (1 1/4"-2") Unit 6 Expansion Tank Circulation Pump 2 (If Necessary) Circulation Pump 1 G allow for maximum flow rates of the units. * Size the water supply piping to Water supply (1 1/4"-2") Gas Pipe * Set dipswitch 3 to "OFF". (See page of Dipswitch Settings) When installing 2 pumps in parallel Remote Controller Connect to the "Recirculation System" connector.
SHA8754̲006-009̲05.
2.Gas Piping Follow the instructions from the gas supplier. Gas Connection • Gas flex lines are not recommended unless they are sized for the maximum input kW (Btu/h • MJ) of each unit. • Do not use piping with a diameter smaller than the size of the gas inlet to each unit. • After installation, check the gas line for any leaks before using. Gas Valve Install a gas shutoff valve for every unit installed.
4. Electrical Wiring • Do not connect electrical power to the unit until all electrical wiring has been completed. NOTICE • If the remote controller is not connected to the system, the unit will default to a 60 °C (140 °F) temperature setting. N-132M(-ASME), N-1321M-ASME, NC380-SV-ASME (1)When installing the system controller, take care not to damage the internal electrical components in the unit and tie off loose electrical cords with the included vinyl ties.
N-084M(-DV)(-ASME), KM3211WH, (L)WH(X)56 (1)When installing the system controller, take care not to damage the internal electrical components in the unit and tie off loose electrical cords with the included vinyl ties.** (2)Remove the connector from the circuit board to the remote controller terminal block in the unit. Connect this disconnected connector labeled 90 from the circuit board to the connector labeled 90 from the system controller.
N-0931M(-DV, -OD)(-ASME), NC250-SV(-DV)-ASME N-0841MC(-DV), NCC199-SV(-DV), N-0842MC(-DV), (L)WHC56, BC3200RA (1) When installing the system controller, take care not to damage the internal electrical components in the unit and tie off loose electrical cords with the included vinyl ties.** (2) Remove the connector from the circuit board to the remote controller terminal block in the unit.
5. Trial Operation The installer should test operate the system, explain to the customer how to use the units, and give the owner the Installation and Operation Manual before leaving the installation. (1) Connect electrical power to each of the units. (2) Open the gas shutoff valve, the main water valve, and the water shutoff valves on all of the units. (3) Turn the power ON with the remote controller. (The Operation Lamp will light up.
Checking Water Flow (Maintenance Monitors) Necessary only for recirculation systems (L)WH(X)56, (L)WHC56, KM3211WH, BC3200RA Power On/Off Button Display Selection Button Set Button Speaker Display No. and Unit No. Display Unit No. 5C SC-201 01 Unit 1 02 Unit 2 •• •• • • 06 Unit 6 The Power On/Off Button can be set to either "ON" or "OFF" unit operation will not be affected by this setting. However, be sure to set the Power On/Off Button to “ON” after turning on the power.
Dipswitch Settings N-084M(-DV)(-ASME), N-132M(-ASME), N-1321M-ASME, NC380-SV-ASME, N-0931M(-DV,-OD)(-ASME), NC250-SV(-DV), N-0841MC(-DV), NCC199-SV(-DV), N-0842MC(-DV) Disconnect the power to the units before changing the dipswitches. (Otherwise, settings will not take effect.) Dipswitch SW1 SW2 SW3 Pump abnormality detection Pump rotation Yes No No Yes SW4 SW5 SW6 SW7 SW8 Set temperature * All dipswitches are set to ON from the factory.
Dipswitch Settings (L)WH(X)56, (L)WHC56, KM3211WH, BC3200RA Disconnect the power to the units before changing the dipswitches. (Otherwise, settings will not take effect.) Dipswitch SW1 SW2 SW3 SW4 Pump abnormality detection Pump rotation 60 C recovery during hightemperature setting Yes No No Yes SW5 SW6 SW7 SW8 Power Button works with circulation Interlock Set temperature Independence * All dipswitches are set to ON from the factory.
