Watts Tekmar 088 User manual

The Pressure Sensor 088 provides a ratiometric signal to a

controller to measure the pressure of a hydronic system between

0 to 150 psi (0 to 1034 kPa). The sensor bulb is designed to

install into a tee using 1⁄8"-27 NPT threads and includes a

10 foot (3 m) long cable.

Introduction

IOM-T-088

Installation, Operation and Maintenance

Pressure Sensor 088

WARNING

!

Please read carefully before proceeding with

installation. Your failure to follow any attached

instructions or operating parameters may lead to

the product’s failure.

Keep this Manual for future reference.

Important Safety Information ................................................................... 3

Installation ................................................................................. 4

Check the Contents ....................................................................... 4

Preparation .............................................................................. 4

Installation Location ....................................................................... 4

Step 1 – Rough In Wiring ................................................................... 4

Step 2 – Mounting ........................................................................ 4

Step 3 – Wiring ........................................................................... 4

Testing and Troubleshooting ................................................................... 5

Technical Data .............................................................................. 7

Limited Warranty and Product Return Procedure .................................................... 8

Table of Contents

3

Important Safety Information

It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards.

Watts®is not responsible for damages resulting from improper installation and/or maintenance.

This is a safety-alert symbol.

The safety alert symbol is shown

alone or used with a signal

word (DANGER, WARNING, or

CAUTION), a pictorial and/or a

safety message to identify hazards.

When you see this symbol alone or

with a signal word on your equip-

ment or in this manual, be alert to

the potential for death or serious

personal injury.

This pictorial alerts you to electricity,

electrocution, and shock hazards.

This symbol identifies hazards which, if not avoided, could

result in death or serious injury.

This symbol identifies hazards which, if not avoided, could

result in minor or moderate injury

This symbol identifies practices, actions, or failure to act

which could result in property damage or damage to

the equipment.

• It is the installer’s responsibility to ensure that this

sensor is safely installed according to all applicable

codes and standards.

• This sensor is not intended for use as a primary

limit device. Other devices that are intended and

certified as safety limits must be placed into the

control circuit.

NOTICE

Read manual and all product labels

BEFORE using the equipment.

Do not use unless you know the

safe and proper operation of this

equipment. Keep this manual

available for easy access by all

users. Replacement manuals are

available at tekmarControls.com

Do not attempt to service the sensor. There are no

user serviceable parts inside the sensor. Attempting to

service the sensor voids the warranty.

• One pressure sensor bulb

• One 10 foot electrical cable with connector

• One Installation and Operation Manual IOM-T-088

Check the Contents

Installation

• 22 mm or Crescent wrench • Flathead screwdriver

Tools Required

Materials Required

• Pipe joint compound or PTFE tape

Preparation

Check the contents of this package. If any of the contents listed are missing or damaged, please refer to the Limited

Warranty and Product Return Procedure on the back of this brochure and contact your wholesaler or tekmar®sales

representative for assistance. Type 088 includes:

• A tee with 1⁄8"-27 NPT threads should be located on a

pipe near the hydronic system’s expansion tank.

• Keep dry. Avoid potential leakage onto the sensor.

Installation LocationInstallation Location

• The sensor cable is 10 feet (3 m) in length. This can be

extended up to 100 feet (30 m) using 3-conductor 18

AWG solid or stranded cable. The cable is color coded

with black, red and green wire jackets.

• Strip wire to 3⁄8" (10 mm) for all terminal connections.

Installation LocationStep 1 – Rough In Wiring

• Apply pipe joint compound or PTFE tape to the sensor

threads.

• Thread sensor into the tee. Tighten with wrench.

• Connect the cable to the sensor using the Metri-Pack

electrical connector.

• Should the cable need to be disconnected from the

sensor bulb, use a flathead screwdriver to release the

electrical connector spring-loaded clip.

Installation LocationStep 2 - Mounting

• Pull wires through a conduit as required by electrical

codes.

Installation LocationStep 3 - Wiring

Conduit Connector

• Terminate the black conductor to the control’s power

common.

• Terminate the red conductor to the control’s 5 V(dc)

reference voltage.

• Terminate the green conductor to the control’s ratiometric

signal input.

Terminating

5

Testing and Troubleshooting

An electrical multimeter capable of measuring between 0 to 5 volts DC is required.

Using the electrical meter probes, measure the voltage between the black (power common) and red (reference voltage)

wires. The expected voltage is 5.0 V(dc).

Using the electrical meter probes, measure the voltage between the black (power common) and green (ratiometric

signal input) wires. The voltage signal should be between 0.5 to 4.5 V(dc). Using the lookup table below, compare the

measured voltage to a mechanical pressure gauge mounted on the hydronic system. The signal should be accurate

within 1% over the full scale.

Pressure (psi) Pressure (kPa) Ratiometric Voltage (Vdc)

0 0 0.50

534 0.63

10 69 0.77

15 103 0.90

20 138 1.03

25 172 1.17

30 207 1.30

40 276 1.57

50 345 1.83

60 413 2.10

70 482 2.37

80 551 2.63

90 620 2.90

100 689 3.17

110 758 3.43

120 827 3.70

130 896 3.97

140 965 4.23

150 1034 4.50

Pressure vs Voltage Table

Notes

_______________________________________________________________________________________________________________________________________

7

Technical Data

Pressure Sensor 088

Literature Submittal, Installation and Operating Manual

Maximum Operating Pressure 0 to 150 psi (0 to 1034 kPa)

Operating Temperature Range -40 to 257°F (-40 to 125°C)

Burst Pressure 450 psi

Acceptable Fluid Media Water, glycol solution, steam

Dimensions 0.87" ø x 2.3" L (22.0 mm ø x 58.5 mm L), cable: 10 feet (3.0 m)

Threads 1/8-27 NPT

Sensor 5 V(dc) ratiometric signal, +/-1% accuracy

Materials 304 stainless steel (sensor bulb); 3-conductor, 24 AWG with PVC cable jacket

Packaged Weight 0.40 lb. (180 g)

Limited Warranty The liability of tekmar under this warranty is limited. The Purchaser, by taking receipt of any tekmar product

(“Product”), acknowledges the terms of the Limited Warranty in effect at the time of such Product sale and acknowledges that it

has read and understands same.

The tekmar Limited Warranty to the Purchaser on the Products sold hereunder is a manufacturer’s pass-through warranty which

the Purchaser is authorized to pass through to its customers. Under the Limited Warranty, each tekmar Product is warranted against

defects in workmanship and materials if the Product is installed and used in compliance with tekmar’s instructions, ordinary wear

and tear excepted. The pass-through warranty period is for a period of twenty-four (24) months from the production date if the Prod-

uct is not installed during that period, or twelve (12) months from the documented date of installation if installed within twenty-four

(24) months from the production date.

The liability of tekmar under the Limited Warranty shall be limited to, at tekmar’s sole discretion: the cost of parts and labor provided by

tekmar to repair defects in materials and / or workmanship of the defective product; or to the exchange of the defective product for a

warranty replacement product; or to the granting of credit limited to the original cost of the defective product, and such repair, exchange

or credit shall be the sole remedy available from tekmar, and, without limiting the foregoing in any way, tekmar is not responsible, in

contract, tort or strict product liability, for any other losses, costs, expenses, inconveniences, or damages, whether direct, indirect, spe-

cial, secondary, incidental or consequential, arising from ownership or use of the product, or from defects in workmanship or materials,

including any liability for fundamental breach of contract.

The pass-through Limited Warranty applies only to those defective Products returned to tekmar during the warranty period. This Lim-

ited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product, or to reinstall the repaired or

replacement Product, all such costs and expenses being subject to Purchaser’s agreement and warranty with its customers.

Any representations or warranties about the Products made by Purchaser to its customers which are different from or in excess of the

tekmar Limited Warranty are the Purchaser’s sole responsibility and obligation. Purchaser shall indemnify and hold tekmar harmless

from and against any and all claims, liabilities and damages of any kind or nature which arise out of or are related to any such repre-

sentations or warranties by Purchaser to its customers.

The pass-through Limited Warranty does not apply if the returned Product has been damaged by negligence by persons other than

tekmar, accident, fire, Act of God, abuse or misuse; or has been damaged by modifications, alterations or attachments made sub-

sequent to purchase which have not been authorized by tekmar; or if the Product was not installed in compliance with tekmar’s

instructions and / or the local codes and ordinances; or if due to defective installation of the Product; or if the Product was not used in

compliance with tekmar’s instructions.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHICH THE GOVERNING LAW ALLOWS PARTIES TO

CONTRACTUALLY EXCLUDE, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE, DURABILITY OR DESCRIPTION OF THE PRODUCT, ITS NON-INFRINGEMENT OF ANY RELEVANT PATENTS

OR TRADEMARKS, AND ITS COMPLIANCE WITH OR NON-VIOLATION OF ANY APPLICABLE ENVIRONMENTAL, HEALTH OR SAFETY

LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL

NOT EXTEND BEYOND TWENTY-FOUR (24) MONTHS FROM THE PRODUCTION DATE, TO THE EXTENT THAT SUCH LIMITATION IS

ALLOWED BY THE GOVERNING LAW.

Product Warranty Return Procedure All Products that are believed to have defects in workmanship or materials must be returned,

together with a written description of the defect, to the tekmar Representative assigned to the territory in which such Product is located.

If tekmar receives an inquiry from someone other than a tekmar Representative, including an inquiry from Purchaser (if not a tekmar

Representative) or Purchaser’s customers, regarding a potential warranty claim, tekmar’s sole obligation shall be to provide the address

and other contact information regarding the appropriate Representative.

Tel: 1-800-438-3903 • Fax: (250) 984-0815

tekmarControls.com

All specifications are subject to change without notice

Limited Warranty and Product Return Procedure

Watts tekmar 088 User manual

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