Noritz SC-201-6M INT Installation Manual

System Controller

*SHA8754 C*

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 fi re, serious bodily injury and even death
when ignored.

Denotes content that may result in bodily injury and physical damage when
ignored.

Requests to Installers

WARNING

Failures and damage caused by erroneous work or work not as instructed in this manual are not
covered by the warranty.
Refer to installation manual attached to the appliance as well.
Check that installation was done in accordance with this Installation Manual upon completion.
After completion of installation, be sure to hand this Installation Manual to the customer.

1.Included Accessories

Part Shape Q'ty Part Shape Q'ty

Installation Manual

(This document)

In order to use this product safely, read this installation manual carefully and
follow the installation instructions.

The following accessories are included with
this product. Check for missing items before
installing.

13

Tapping Screw

4 x 8

System Controller

Mounting Plate

Cord Bushing

*1 Use the vinyl ties for loose electrical wiring inside the unit.

SHA8754-5

Rev. 10/09

*1

Vinyl Tie

1

- 1 -

31

Multi-System Wiring

* Connect these to the

remote control terminal
block in each unit

No.6

No.5

No.4

No.3

No.2

Unit 1

System Controller

DIPSW

12345678

*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

Disconnect this
connector

Disconnect for
system controller

89

90

90

B5

B5

PCB

102

Power
PCB

*Remote control

terminal block

*Disconnect this
connector

Remote control

terminal block

Remote Controller Cord

*Disconnect this
connector

Remote control

terminal block

Remote Controller Cord

Unit 2

Unit 3-6

Remote
Controller

PCB

Disconnect for

system controller

Power
PCB

PCB

Disconnect for

system controller

Power
PCB

System select connectors

* The remote control terminal

location may differ depending on
the unit.

* The connector location may

be slightly different on the
actual circuit board than in
these illustrations.

- 2 -

System Select Connectors

M
A
X

100W

Connect to
terminals

AC Power Supply
AC100-240V
Under 100W

Warning Light

1

2

Warning

Light

Warning

Light

Operation

Relay

Operation

Relay

Fan

Fan

Pump

1

Pump

Pump

2

Pump

If this system will be installed with a recirculation system, a storage system,
or with a fi ltration 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.

If the units will be installed in a (1)
recirculation system:
Connect the selecter to the connector
labeled "Recirculation System" (1).

If the units will be installed with a (2)
storage tank:
Connect the selecter to the connector
labeled "Storage System" (2).

If the units will be installed with a water (3)
fi ltration system:
Connect the selecter to the connector
labeled "Filtration System" (3).

Selecter

Filtration System

Storage System

Recirculation
System

Warning

Light

Warning

Light

Operation

Relay

Operation

Relay

Fan

Fan

Pump1

Pump1

Pump2

Pump2

M

100W

A
X

(1)(2)(3)

System Controller Terminals (Optional Connections)

Operation LightWarning Light

A warning light can be connected to the system as •
above to warn of any abnormal operation.
When this light fl ashes, check for an error code on
the remote controller and diagnose accordingly.

- 3 -

M
A
X

An operation light can be connected •
to the system controller as above in
order to indicate when power has been
turned on to the system.

Warning

Light

Warning

Light

Operation

Relay

Operation

Relay

Fan

Fan

Pump

Pump

Pump

Pump

100W

AC Power Supply
AC100-240V
Under 100W

Connect to
terminals

1

1

2

2

Operation Light

For connection to
Pump 1, see 1)

←

M
A
X

Circulation Pump

100W

1

2

Operation

Relay

Operation

Relay

Fan

Fan

Pump

1

Pump

Pump

2

Pump

Warning

Light

Warning

Light

Single phase AC120V or
Three phase AC240V pump voltage etc.

Relay

Thermal Relay

AC Power Supply
AC100-240V
Under 100W

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.•

When operating with 1 circulation pump(1)

AC Power Supply

1

1

2

2

AC100-240V
Under 100W

Single phase AC120V or
Three phase AC240V pump voltage etc.

Relay

Thermal Relay

Circulation Pump

Warning

Light

Warning

Light

Operation

Relay

Operation

Relay

Fan

Fan

Pump

Pump

Pump

Pump

M

100W

A
X

*If there is only one pump, connect to "Pump 1" terminals.

If two circulating pumps will be used:(2)
Connect as below if two circulating pumps will be used. The two pumps can be set to alternate
with a dipswitch change. (Refer to the "Dipswitch Settings" section.)

*Do not connect both Pump 1 and Pump 2 to the same terminal block.
* After connecting as shown above, set dipswitch 3 to "OFF".

(Refer to the "Dipswitch Settings" section.)

Piping diagram for parallel pipe installation•

Circulation pump

Flow control valve

Circulation pump

Check valve

Check
value

Adjust the pump fl ow with the fl ow control
valves.
If multiple pumps are used, control the fl ow of

Flow control valve

- 4 -

each pump with separate valves.

Exhaust Fan Terminal

M
A
X

100W

Connect to
terminals

Exhaust Fan
Ventilation Fan

Three phase AC240V etc

Single phase AC120V

Thermal
Relay

1

2

Operation

Relay

Operation

Relay

Fan

Fan

Pump

1

Pump

Pump

2

Pump

Warning

Light

Warning

Light

Relay

AC Power Supply
AC100-240V
Under 100W

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.•

Pressure Switch/Safety Shutoff Switch and External Operation Switch Connections

Pressure Switch/Safety Shutoff Switch Connection

Please remove
this connector
when Wind Pressure
SW are connected.

A pressure switch or other safety device can be •
installed to shut down the system under unsafe
or improper operation.
Please use a low voltage (15V) junction, normally •
open relay.
This terminal is short circuited at time of •
shipment.
In order to use this feature, cut the wire labeled
"Pressure Switch", connect it to the relay, and
disconnect the connector

Pressure Switch

15V 3.3mA
* Using the Noritz remote

Relay

controller cord, the cord
can be extended to
500m (1500ft.) maximum.

Pressure SW

Pressure Switch

Cut wire

Power Supply

Connecting the external operation switch

External
Operation Switch

External operation SW

External
Operation Switch

Cut wire

15V 3.3mA
* Using the Noritz remote

controller cord, the cord
can be extended to
500m (1500ft.) maximum.

Follow this procedure to use an external •
switch to turn power on and off to the unit
instead of the remote controller.

The power to the units will be on (1)

when the external switch is turned on
(closed).

The power to the units will be off when (2)

the external switch is turned off (open).

Use a low voltage (15V) junction.•
If the units are installed with a recirc *
ulation system,a storage tank or a
fi ltration system, the pump will also turn
on or off with this switch.

- 5 -