Noritz IHK-NRCP Quick guide

# Parts Shape Q’ty

1Temperature Sensor

(2 ties included) 1

2Wire for Temperature Sensor

(4.0 ft [1.2 m]) 1

3 Push Button Switch 2

4 Instruction 1

3. Installation

1) Schematic diagram

2) Wiring

① Turn off both gas and water supply to the water heater. Turn the power off.

② Remove the front cover by loosening the 4 screws. (Figure 1)

3) Wiring for Push Button Switches

③ Connect both push button switch and temperature sensor to the connector on the

terminal block. See Figure 2.

④ Close the front cover with secure 4 screws.

When you connect the push button switches to the terminal block, you can run cables from

each switch directly to the terminal block and connect them to the same terminal. Or, you can

run a common branch circuit that runs from the terminal block and connect each switch to the

branch.

Multiple switches connected directly to the same terminal at the terminal block.

Read this manual carefully and failure to follow these

instructions exactly could result in a re or explosion, serious

bodily injury and/or property damage. Installation must be

performed by a qualied plumber, a licensed gas tter, or a

professional technician in accordance with all local codes.

Improper installation and operation by an unqualied person

will void the warranty.

Electrical Shock Hazard

Do not turn the power on until electrical wiring is nished. Disconnect the power before servicing.

Failure to do so may result in death or serious injury from electrical shock.

1. About this Kit

NORITZ IHK-NRCP offers the most efficient way to save energy and water by adding Temperature

Sensor and setting on the panel.

This kit is designed to deliver hot water to your entire home with the press of a button (within a few

minutes). There are no standby losses, no stack losses, and no need for extra storage tanks.

This kit can be used only on an external recirculation system with a dedicated return line.

■ Items included in the kit

Before installation, verify that all the items below are included .

Kit# IHK - NRCP

Rev.10/16

On Demand Recirculation Installation

and Instruction Manual

WARNING

CAUTION

Figure 2Figure 1

Water

Heater

Return Line

Cold Water Line

Push

Button

Switch

Push

Button

Switch

Push

Button

Switch

Hot Water Line

Note> It may take a few minutes depending on the length of the pipe to

prepare hot water to the desired xture.

Wires for Push Button Switches and Temperature Sensor should be connected to the terminal block

located on the right side of the control panel.

2. Overall installation schematic

Wires

Aftermarket

Purchase

Wires

Included

in this kit Push

Button

Switch

“A” Wiring Throughway

Temperature

Sensor

Wiring

Throughway

See Detail “A”

Terminal

Block

Temperature

Sensor

2 Wires

from

Temperature

Sensor

Terminal

Block

2 Wires

from

Push Button

Switches

Return Connection

Install temperature sensor

as close as possible to the return

connection

Applicable for NRCP1112/982 series only.

5. Installing temperature sensor on recirculation system

The sensor should be installed as close to the return connection of the unit as possible in order

to measure the return temperature accurately.

1) Open the cover of temperature sensor package. See Figure 3.

6. Setting on the control panel

7. How to Use

1) Turn the power off on the remote.

2) Press and hold the 'Function Button' to enter

'Installer Mode', '[1:RC]' will be displayed.

3) Press the 'Dial Button' so 'oFF' is ashing. (Default

setting is 'oFF' and recirculation function is not

activated.)

4) Turn the 'Dial Button' clockwise so 'on' is ashing.

(This will active the recirculation function.)

5) Press the 'Dial Button' to store the current setting

mode and return back to ‘Installer Mode’.

6) Turn the 'Dial Button' to '[2:RM]' then press the 'Dial

Button' to save the setting.

7) Turn the 'Dial Button' to '[tt24]' (On Demand

Recirculation Mode) then press the 'Dial Button' to

save the setting.

Note>

①'[tt24]' (On Demand Recirculation Mode)

cannot be accepted if the Temperature

Sensor is not connected to the terminal

block.

② You can nd ' ' icon on the display

panel properly setting and connection the

Temperature Sensor.

1) Before hot water is required, press any of the push button switches.

2) Pump will begin to circulate and prime the lines with hot water. The pump will continue to

run until water reaches the most remote xture.

Note> The pump run time and delivery time are determined by water pipe distance and

size. Longer runs will result in longer run times.

3) Pump will shut down automatically once hot water is available.

4) Do not repeatedly press the push button switch.

To activate the function, follow the procedure below.

Water

Heater

Return Line

Cold Water Line

Push

Button

Switch

Push

Button

Switch

Push

Button

Switch

Hot Water Line

Figure 3

Figure 5

Figure 4

Figure 6

2) Connect cables to terminal block. See Figure 4.

3) Close the cover. See Figure 5.

4) Install the temperature sensor:

Normal recirculation control is overwritten by the following:

1. Set to External recirculation automatically.

2. Recirculation is initiated by pressing a Push Button Switch.

3. Disables automatic timer function.

4. When the temperature reaches 102°F at the Temperature Sensor, recirculation will stop.

5. Or when 5 minutes have passed after pressing the Push Button Switch, recirculation will stop.

Multiple switches connected to a common branch circuit.

Note>

①You can connect up to 10 push button switches to one terminal.

② Use cables with a diameter of AWG24 or greater.

③ Make sure that the total cable length does not exceed 328 feet (100 meters).

①Fasten to the pipe using the included stainless steel tie bands.

② Temperature sensor must be installed in the vertical position.

③Sensor orientation must be installed as pictured. See Figure 6.

Temperature

Sensor

NOTICE

To return

connection

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