Watts FloodSafe WDS-SI Series User manual

Series WDS-SI and LFWDS-SI

FloodSafe®Water Detector Shutoff

Sizes:

3⁄ 4" and 1" (20 and 25mm)

Please read all instructions, identify all components and read all warnings prior to beginning the installation of this product.

This product is intended to prevent catastrophic water damage in the event of a water heater leak.

Please Note: During an emergency operating condition, the temperature and pressure relief valve installed on your water heater can

discharge an excessive amount of water. It is designed to protect your home or business from the potential danger of explosion. Upon

detection of this discharged water, the FloodSafe®Water Detector Shutoff shuts off both the supply of water and the source of power

(gas, oil or electricity) to the water heater, preventing a very dangerous situation.

The FloodSafe®Water Detector Shutoff also contains an audible & visual alarm and contacts for monitored alarm systems. It is a reset-

table device and can be tested at any time to ensure proper operation.

Parts Included

Important Note: Thermostat wiring is required and must be supplied by the installer.

Planning Your Installation:

The Water Detector Shutoff should be installed within 6 to 12 inches of the water heater on the cold water inlet supply pipe.

The Control Unit, which houses the circuitry for the operation of the valve, contains interlocking connectors for the Water Detector Pad,

the Power Supply and remote alarm and the Power Cutout Module. The cables provided should not be cut or extended; therefore,

remote installation is not recommended.

The Water Detector Pad supplied with the Water Detector Shutoff should be located as close to the water heater as possible. It is not

necessary to remove the cover of the Control Unit to install the interconnecting cables.

Flooring Surface:

Dirt ﬂooring – A metal or plastic drain pan must be installed under the water heater. Position the Water Detector Pad inside the

drain pan.

Cement ﬂoor – Install the Water Dam provided with the Water Detector Shutoff installation kit around the outside diameter of the

water heater. Position the Water Detector Pad inside the Water Dam.

Attic installation – A metal or plastic drain pan must be installed under the water heater. Position the Water Detector Pad inside

the drain pan.

Please be certain to follow all local codes when installing this device.

Control Unit Power Cutout Module Power Supply

Water Detector Pad Water DamPower Cutout Cable & Pocket Screwdriver

IS-WDS-SI

Installation Instructions:

a. Turn off all electrical power to the water heater.

b. Turn off the water supply to the water heater.

c. Drain water from the water heater so that the cold water supply piping is free of water.

d. Close the drain valve after draining water.

1. Install the Control Unit on the cold water supply piping with the arrow on the valve pointing in the direction of ﬂow, towards the

water heater. Figure 1

CAUTION: Do not apply heat directly to the valve body!

Pre-solder the adapter ﬁttings that will be used to connect piping to the valve. Use caution when soldering to avoid damage

to the valve cover and internal components.

2. After soldering the piping to the ﬁttings, apply thread sealant to the adapter ﬁttings and thread the adapters with attached piping

into the valve body. Figure 2

3. Install and solder the piping to the supply and to the inlet of the water heater.

4. Install the Water Detector Pad under the water heater with the green circuit board down. The Water Detector Pad must lie ﬂat on

the ﬂoor or in a drain pan. Route the connecting cable to the Control Unit and insert the interlocking connector to the circuit board.

Figure 3

Note: It is not necessary to remove the cover of the Control Unit to install the interconnecting cables. To remove an interlocking cable,

use the supplied Pocket Screwdriver to depress the tab on the cable while pulling cable from its socket. Figure 4

Important: Interconnecting wires must not touch or be in close proximity to any ﬂame or hot surface.

a. If no drain pan exists, install the Water Dam around the perimeter of the water heater. The Water Dam can be cut so that it ﬁts

approximately 1 to 2 inches outside the diameter of the water heater and includes the area where the Temperature and Pressure

safety relief drain tube terminates.

b. Install the plastic connector supplied with the Water Dam into both ends of the Water Dam so that no gap exists between the

ends. Figure 5 and Figure 5a

5. Install the Power Cutout Module, Figure 6, to the water heater as indicated below.

Oil Fired Water Heater Installation (for Spark Ignition Water Heater Installation, see page 3)

NOTE: Be certain to disconnect the circuit breaker/fuse that supplies power to the oil burner. A warning label should be applied to the

panel with a warning against restoring power while work is in process.

1. Mount the Power Cutout Module Figure 10, as close to the oil burner as possible.

2. Remove the jumper from the TT terminals of the oil burner relay shown in Figure 7.

Figure 1 Figure 2 Figure 3

Figure 4 Figure 5 Figure 5a Figure 6

Figure 7 Figure 8 Figure 9

3. Using two conductor thermostat cable (supplied by the installer) install the spade terminals to one side of the cable and fasten termi-

nals to the other side of the cable. Connect the cable from the Power Cutout Module Terminal C (common) and NO (normally open) to

the TT terminals on the Oil burner Primary Relay as indicated in Figures 8 and 9. Install the connecting cable Figure 15 to the Power

Cutout Module terminals R1 and R2. Route the connecting cable to the Control Unit and insert the interlocking connector end to the

circuit board.

4. Proceed to Step 5 to continue installation

Spark Ignition Water Heater Installation (for Oil Fired Water Heater Installation, see page 2)

NOTE: Be certain to disconnect the circuit breaker/fuse that supplies power to the water heater. A warning label should be applied to

the panel with a warning against restoring power while work is in process.

1. Mount the Power Cutout Module as close to the electronic control module as possible.

2. Remove the wire from the Electronic Control “SPARK” terminal that goes to the Pilot Electrode Assembly from Electronic Control as

shown in Figure 11.

3. Using two-conductor thermostat cable, install the spade terminals to one side of the cable and then fasten terminals to the other

side of the cable. Connect the cable from the Power Cutout Module Figure 14 Terminal C (common) to the SPARK terminal of the

Electronic Control and NO (normally open) to the Pilot Electrode Assembly as indicated in Diagram 2, Figures 12 and 13. Note: We

have made every effort to provide all of the hardware required for a complete installation. However, the terminal connections used to

connect the Pilot Electrode Assembly to the Electronic Control vary by manufacturer, although we have included several connectors

used by leading manufacturers with your WDS, your speciﬁc mating connectors may not be included. If the required connector is

not included, it may be purchased locally at any electronic supply store. Install the Connecting Cable Figure 15 to the Power Cutout

Module terminals and R1 and R2, route the Connecting Cable to the Control Unit and insert the interlocking connector end to the

circuit board.

4. Proceed to Step 5 to continue installation.

Oil Burner

Primary

Relay

Remove Jumper to T T Terminals

R2 C

NCNO

To T T terminals on Oil Burner Relay

To Control Unit

POWER CUTOUT MODULE

Electronic Control

SPARK

Before

Pilot Electrode

Assembly

Electronic Control

SPARK

After

To Power

Cutout Module

Terminal

CNO

Pilot Electrode

Assembly

Figure 11 Figure 12

Figure 13 Figure 14 Figure 15

R2 C

NCNO

To Electronic Control

To Control Unit

To Pilot Electrode

Assembly

POWER CUTOUT MODULE

Figure 10

T2T1

POWER

CUTOUT

MODULE

OIL BURNER

PRIMARY RELAY

CONTROL

UNIT

Installation Continued

5. Remove the green circuit board terminal strip from the Control Unit by pulling straight out on the terminal strip. Figure 16

6. Install wiring (The wire is installer supplied. Thermostat wire is acceptable.) between the green circuit board connector and the

Power Supply, observing polarity, as shown on both the Power Supply and the control panel. [+ to + and – to –] Figure 17

Maximum run of thermostat wire; 18 gauge – 75 feet; 20 gauge – 50 feet; 22 gauge – 35 feet.

Note: If remote alarm detection is desired, connection to the alarm circuit can be made using the normally open contacts provided on

the terminal strip. These contacts are rated for 150mA. Do not exceed this amp range or damage to the Control Unit can occur.

Exceeding the current rating will void the warranty. Figure 18

IMPORTANT! – Do not insert the Power Supply into the 120 VAC outlet until the installation is complete.

7. Insert the green circuit board connector into the Control Unit. Figure 19

8. Check the position of the valve reset located on the front of the Control Unit. The slots should indicate the valve is in the open

position. The 11 o’clock position is the open position. Figure 20 open position; Figure 21 closed position.

9. Turn on the water supply and check for leaks.

10. Insert the Power Supply into a suitable 120 VAC outlet. The status lamp on the Control Unit will be green.

IMPORTANT! – The outlet must be powered at all times; it must not be controlled by a switch.

11. Turn on the electricity to the water heater. The water heater should operate normally.

Figure 19 Figure 20 Figure 21

Figure 16 Figure 17 Figure 18

Test the System Prior to Leaving the Installation:

1. Place enough water in the drain pan or Water Dam to actuate the Water Detector Shutoff.

2. Upon actuation, the following should take place:

a. Power to the water heater should shut off immediately.

b. The water supply to the water heater should shut off immediately. The valve position indicator on the Control Unit should indi-

cate that the valve is in the closed position.

c. The green indicating lamp on the Control Unit should turn to red.

An audible alarm should sound, and if connected, the remote alarm should be actuated. The audible alarm can be silenced by

pressing the black silence button on the Control Unit.

3. If all of the above functions take place, the unit can be reset.

To Reset the Control Unit:

1. Remove the Water Detector Pad from the drain pan or Water Dam and wipe the moisture from the green circuit board.

2. Wipe any water from the drain pan or Water Dam.

3. Reposition the Water Detector Pad on the ﬂoor or in the drain pan.

4. Turn the valve position indicator on the Control Unit to the open position.

The Water Detector Shutoff is now set to operate in the event of water heater leakage.

Note:

Please note that the Floodsafe®Water Detector Shutoff will not operate as intended without power. A battery back up is available

to allow operation for 36 to 48 hours in the event of a power outage.

Control

Unit

Power

Supply

Power Cutout

Module

Water

Detector Pad

Water Dam

Control

Unit

Power

Supply

Power Cutout

Module

Water

Detector Pad

Water Dam

Oil Fired Spark Ignition

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