Watts LF53L User Manual

Installation Model 530C and LF530C

Calibrated Pressure Relief Valve

Model 53, LF53, 111 and LF111

Pressure Relief Valves

WARNING

Read this Manual BEFORE using this equipment. Failure to read and follow all safety and use information

can result in death, serious personal injury, property damage, or damage to the equipment.

Keep this Manual for future reference.

Installation Guidelines

Model 53 and LF53 Pressure Relief Valves

For pressure relief only. Furnished without a lever.

⁄2" female drain. Pressure range 75-175psi (5.17-12.06 bar). Setting 50, 75, 125 and 150psi (3.45, 5.17, 8.61 and 10.34 bar).

Series 530C and LF530C Calibrated Pressure Relief Valves

Calibrated adjustment allows for setting valve to required pressure relief. Adjustable range 50-175psi (3.45-12.06 bar). The Series 530C and LF530C is ideal for bypass thermal expansion pressure relief.

These valves are not an ASME approved safety relief valves and should not be used in system applications with this requirement.

Auxiliary (Bleeder) Pressure Relief Valve for Thermal Expansion Relief

Purpose

Auxiliary (bleeder) pressure relief valve is set approximately 25psi (172 kPa) lower than heater T&P valve and eliminates unnecessary and frequent relief from hot water heater T&P relief valve. This protects the system from thermal expansion pressure buildup during times when reducing valve thermal

Cold Supply

One-Way

Flow Device

Water Pressure Reducing Valve

No. 530C

expansion bypass is ineffective due to high inlet water pressure. The adjustable Series 530C and LF530C is preferred to provide a range of settings adaptable to any installation. Some national and regional codes require maximum static (no-ow) pressure at any xture to be not more than 80psi (5.5 bar).

Location

Install auxiliary (bleeder) pressure relief valve downstream of the reducing valve, in any convenient location where slight spillage is not objectionable. If spillage is frequent, install to drain in set tubs or other drain location.

Dielectric Unions

*Watts T&P

Safety Relief

Valve Set At

150psi

Water

Heater

Reduced Pressure 50psi

*T&P valve should be set according to tank working pressure or local code requirements. **Only where code approved. NOTE: Resulting system pressure will be as high as bleeder valve setting (usually 125psi).

No. 53

Hot

IS-53/530C/111

Cold

Set Tub

**Watts Auxiliary

Thermal Expansion

Pressure Relief Valve

No. 53, LF53, 530C,

LF530C, 111 or LF111

No. 111

Auxiliary Relief

Valve Can Be

Installed On

Either Hot Or

Cold Piping

Limited Warranty: Watts Regulator Co. (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of

original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.

THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product. Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.

WARNING: This product contains chemicals known

to the State of California to cause cancer and birth defects or other reproductive harm.

For more information: www.watts.com/prop65

USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca

A Watts Water Technologies Company