Bradford White LT199NXX1 Kurzanleitung

Installation and Instruction Manual

On Demand Kit

Model LT199NXX1 / LT199PXX1

LT199NRX1 / LT199PRX1

RTGS199N1 / RTGS199X1

RTGR199N1 / RTGR199X1

On-Demand Kit Manual S633100211 Rev 11/22

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.

CAUTION

# Parts Shape Q’ty

1Temperature Sensor

(2 ties included) 1

2Wire for Temperature Sensor

(4.0 ft [1.2 m]) 1

3 Instruction 1

1. About this Kit

On-Demand Kit offers the most efcient 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 .

Note> It may take a few minutes depending on the length of the pipe to prepare hot water to the desired xture.

2. Overall installation schematic

1) Re-circulation model 2) Standard model

Pump

Wiring

Throughway

See Detail “A”

Terminal

Block

Wires for Push Button Switches

and Temperature Sensor should

be connected to the terminal block

located on the left side of the

control panel.

"A" Wiring Throughway

Wires

Included

in this kit

Push Button Switch

& Wire

(Field supplied)

Temperature

Sensor

Wiring

Throughway

See Detail “A”

Terminal

Block

Push Button Switch

& Wire

(Field supplied)

3. Installation

1) Schematic diagram

* Re-circulation model

* Standard model

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. (See Figure 1)

Figure 1

Figure 2

Terminal

Block

Terminal

Block

2 Wires

from

Temperature

Sensor

3 Wires

from

External Pump

(120V 2A)

2 Wires

from

Push Button

Switches

2 Wires

from

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.

* The temperature sensor is included in the re-circulation model only.

* Re-circulation model

* Standard model

4. Wiring for Push Button Switches

There are two acceptable methods for connecting the push button switches to the water heater:

① Multiple switches connected directly to the same terminal at the terminal block.

② Multiple switches connected to a common branch circuit.

Note> ① You 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).

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)

Figure 5 Figure 6

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

③ Close the cover. (See Figure 5)

④ Install the temperature sensor:

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

- Temperature sensor must be installed in the vertical position.

- Sensor orientation must be installed as pictured. (See Figure 6)

Figure 3 Figure 4

To return

connection

6. Setting on the control panel

To activate the function, follow the procedure below.

① Turn the power off on the control display.

② Press and hold the 'Function Button' to enter 'Installer Mode', '[1:EH]'

will be displayed.

③ Turn the 'Dial Button' clockwise so [11:RC] is ashing.

④ Press the 'Dial Button' so 'oFF' is ashing.(Default setting is 'oFF' and

recirculation function is not activated.)

⑤ Turn the 'Dial Button' to [tt24] then press the 'Dial Button' to save the

setting.

Note>

① '[tt24]' (On-Demand Recirculation Mode) will not be

accessible if the temperature sensor is not connected.

② '' icon will display on the control panel if the temperature

sensor is connected properly.

1) Re-circulation model

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.

Normal recirculation control is overwritten by the following:

NOTICE

2) Standard model

① Turn the power off on the control display.

② Press and hold the 'Function Button' to enter 'Installer Mode',

[1:EH] will be displayed.

③ Turn the 'Dial Button' clockwise so [11:rC] is displayed.

④ Press the 'Dial Button' so 'oFF' is displayed.(Default setting is

'oFF' and recirculation function is not activated.)

⑤ Turn the 'Dial Button' to [tt24] then press the 'Dial Button' to

save the setting.

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 temperature

reaches the comfort level.

Note> 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.

7. How to Use

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