BAPI 26268 Water Leak Detector User Manual

BAPI 26268 Water Leak Detector

Overview & Identification

The Water Leak Detector is designed to sense the presence of water and alert a central monitoring system of the potentially destructive situation. The unit is available in three different models with the Attached Sensor, Remote Sensor and Rope Sensor shown in the figures below.

Fig. 1: Water Leak Detector with Attached Sensor

Fig. 2: Water Leak Detector with Attached Sensor in a System Diagram

Fig. 3: Water Leak Detector with Remote Spot Sensor (right) and Water Rope Sensor (below)

Fig. 4: Water Leak Detector with Remote Spot Sensor or optional Water Rope Sensor (not shown) in a System Diagram

Cautions/Warnings

This unit is not intended to be a safety device. In no event shall BAPI or its officers, directors, employees or agents be liable to any company or individual for any indirect, incidental, special, exemplary, punitive or consequential damages including, without limitation, economic or commercial losses, arising out of or resulting from the misuse of this water detector as a safety device.

Mounting

ATTACHED SENSOR

1. Set the sensor in a location where a water leak is likely to occur.
2. Use the 4 screw holes on the feet of the bracket to secure the sensor. BAPI recommends stainless steel screws (not included).
3. Adjust the depth screw with the wing nut to set the alarm depth for detecting leaks as shown in Fig. 5.
4. Terminate the unit as described in the Termination section.
   Fig. 5: Leak Detector with Attached Sensor
   (Attached sensor can also be mounted to a drip pan rim using the provided 7/64” hex set screws as shown above.)

REMOTE SPOT SENSOR

1. The sensor can be secured to a flat surface using the adhesive mounting strips (Fig. 7) or a screw (Fig. 8). It can also be mounted to a drip pan rim using the provided 7/64” hex set screws as shown in Fig. 6. If using the adhesive mounting strip, clean the surface before adhering.
2. Adjust the depth screw with the wing nut to set the alarm depth for detecting leaks as shown in Fig. 9.
3. Mount the BAPI-Box with the transmitter in a visible location within cable length of the Remote Spot Sensor.
4. Terminate the unit as described in the Termination section.
   Fig. 6: Remote Spot Sensor Pan Rim Mounting Fig. 7: Remote Spot Sensor Tape Mount Fig. 8: Remote Sensor Floor Mount
   

Fig. 9: Remote Spot Sensor Depth Adjust

1. Loosen wing nut.
2. Set the required depth of the sensor probe screw using a #2 Phillips screwdriver.
3. Hold the sensor probe screw stationary with the screwdriver.
4. Turn the wing nut down the probe screw until it engages the plastic.
5. Tighten the wing nut 1/4 turn into the plastic.

ROPE SENSOR

1. The sensor can be laid on the floor or around pipes as shown in Figs. 10, 11, 12, & 13.
2. Secure the sensor by using cable clamps.
3. Mount the BAPI-Box with the transmitter in a visible location within cable length of the Rope Sensor.
4. Terminate the unit as described in the Termination section.

Fig. 10: Rope Sensor Hot Water Tank Pan Mounting
Fig. 11: Sub-Floor Rope Sensor Mounting

Rope Sensor Mounting Bracket

The BAPI Rope Sensor Mounting Bracket is specifically designed to hold the rope taut and prevent rope
slippage allowing for maximum contact with the monitored surface. Bracket can be easily mounted to flat surfaces utilizing the industrial adhesive backing or the built in screw holes.
Part Number: BA/LDT-RR-MB

Fig. 12: Horizontal Pipe Rope Sensor Mounting

Fig. 13: Vertical Pipe Rope Sensor Mounting

Combining Sensors
The following combinations of sensors can be used:

1. Two rope sensors with a combined length of no more than 100ft (30.m).
2. Two spot sensors with a combined length of no more than 75ft (22.8m).
3. One spot sensor with a maximum length of 25ft (7.6m) and one rope sensor of no more than 50ft (15.2m).

Wiring and Termination

Terminal Description

A: Water Sensor (No polarity to water sensor cable)
B: Water Sensor (No polarity to water sensor cable)
NC2: Alarm Contact 2, Normally Closed to C2 when De-energized
C2: Alarm Contact 2, Common
NO2: Alarm Contact 2, Normally Open to C2 when De-energized
NC1: Alarm Contact 1, Normally Closed to C1 when De-energized
C1: Alarm Contact 1, Common
NO: Alarm Contact 1, Normally Open to C1 when De-energized
GND/NEU: Power supply ground/neutral
V+/HOT: Power supply input 24VAC +/- 10%

Sensitivity Adjustment for 10’ and 100’ Remote Rope Sensors

The unit’s leak detection sensitivity is set at the factory. However, for the 10’ and 100’ remote rope sensors, the sensitivity may need to be adjusted in the field.
If you are using a 10’ remote rope and it won’t respond, rotate the sensitivity adjustment potentiometer 5 turns counterclockwise.
If you are using a 100’ remote rope and it is too sensitive, then rotate the sensitivity adjustment potentiometer 5 turns clockwise.

Set Up and Commissioning

INDICATION/CONTROLS DESCRIPTION

Red LED ………………………………..LED illuminates when water is detected

Green LED …………………………….LED illuminates when normal power is applied

Reset Button (SW1)…………………Resets manual alarm contact (only if water is no longer present)

FIELD CONFIGURABLE JUMPER (J1) SET UP
The jumpers on J1 are used to set whether the relays are “Latching” or “Non- Latching”, and whether they are “Supervised” or “Unsupervised”. These setting are described in the Operation Sequence section below. OPERATION SEQUENCE
When power is applied, the green LED will illuminate and the unit will start to detect for water at the sensor probe. When there is no detection of water (normal condition), the relays are not in an alarm state and the red LED remains
off. For units in the “Unsupervised” relay mode, the relays are de-energized. For units in the “Supervised” relay mode (default), the relays will be energized. (Note: When there is a loss of power, a supervised relay will drop out indicating a water detection alarm.)
Within 5 seconds of water detection, the relays go into an alarm state and the red LED illuminates. For units in the “Unsupervised” relay mode, the relays are energized. For units in the “Supervised” relay mode (default), the relays are de-energized.

If the unit is in “Non-latching” or auto-reset (default) operation, then the alarm state will automatically reset when the water has dried up. If the unit is in “Latching” or manual-reset operation, then the unit will stay in an alarm state until the reset button is pressed or power is cycled. If there is still water detected during a reset button push, the unit will not reset. If there is still water detected after a power interrupt, the unit will initiate another alarm within 5 seconds.

COMMISSIONING

1. After the unit is installed and wired, turn on the power. (24VAC +/- 10%)
2. Check that the green LED is “on”. If it is not “on”, check the power source.
3. Dampen a cloth or sponge and touch both the sensor probe tip and the sensor base. An alarm should occur within 5 seconds.
4. The red LED should illuminate and the relay(s) should de-energize, or energize if set up as unsupervised. (To check relay status, measure the resistance at the relay contacts or monitor the status from the BAS screen.)
5. Remove the dampened rag or sponge to clear the alarm. If the unit is set up for a non-latching relay (J1 jumper across the “N” pins), the red LED and relay(s) will energize, or de-energize if set up as a unsupervised relay. If the unit is set up for a latching relay (J1 jumper across the “L” pins), the operator must push the reset switch on the detector board or interrupt power to clear the alarm.
6. Check the depth screw (see Mounting Section) to be sure it’s at the appropriate water depth for alarm.

Detectable Liquids

The sensors are designed to detect the presence of water and other conductive fluids. BAPI has performed tests on multiple liquid types to see which are detectable and which are not. Before leaving the installation, always check the sensor with the liquid you are trying to detect as every environment and application may be different.
DETECTABLE: Water, De-ionized water, Distilled Water, Reverse Osmosis (RO) Water
NOT DETECTABLE: Oil, Diesel Fuel, Unleaded Fuel

Maintenance

Check the water sensor probe once a year to be sure there is no dirt or debris collected around the probes. Dirt or debris around the probes may cause nuisance alarms in moist situations. Change the service intervals depending on environmental conditions. In very clean conditions the probe may never need maintenance. Rope sensor may be wiped down with isopropyl alcohol, warm soapy water on a cotton cloth or placed in a dishwasher.

Diagnostics

Specifications

Power: 24VAC ±10% (If VDC power is required, call your BAPI rep.), 5 Amp Relays: 4 Watt / 4 VA max
Rectification: Half Wave

Wiring:

• Screw Terminals: 2 to 4 pair of 12 to 22AWG (BAPI recommends 16 to 22AWG).
• Water Detection Sensor: 2 wires (provided), optional Flex Connector or Liquid Tight Fitting for strain relief

Sensor:

• Rope Sensor: Plenum-rated sensor cable, detects 1/8” of water. Max length: 100’ (30.5m)
• Attached Sensor: Sensor w/ adjustable depth screw from 0.063 to 0.84” (1.60 to 21.34mm)
• Remote Sensor: Sensor w/ adjustable depth screw from 0.062 to 0.5” (1.57 to 12.70mm)
  (Attached and Remote Sensors are designed to be mounted to flat surfaces or on the rims of drip pans.)

Latching and Supervised Relay Options:

• Latching: Relay stays in alarm until manually reset or power is cycled
• Non-Latching: Relay automatically resets after water is removed (default)
• Unsupervised: Relay energizes on water detection
• Supervised: Relay de-energizes on water detection (default) Note: Relay de-energizes on loss of power
• Reset Action: If latching, local pushbutton or power interrupt
• Local Indication: One green power LED, one red alarm LED

Alarm Relay Contacts:

• LDT4: Two SPDT, 5 Amp relay outputs

Operating Environment

• Remote Sensor: -20 to 185ºF (-20 to 70ºC), 0 to 100%RH, condensing
• Rope Sensor: 32 to 167ºF (0 to 75ºC), 0 to 95%RH, non-condensing
• Detector (BB): -4 to 158ºF (-20 to 70ºC), 0 to 95%RH, non-condensing
• Enclosure Material and Ratings: NEMA 4 (IP66), UV-resistant polycarbonate, UL94 V-0
• Agency: RoHS, UL
• Warranty: 5 years

Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800
Fax+1-608-735-4804
E-mail: [email protected]
Web: www.bapihvac.com

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