Watts LFP3 User Manual

Installation Instructions No. LFP3

Multi-Oriﬁce Flow Control for Tankless Heaters

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.

IS-LFP3

Installation

1. Solder No. LFP3 into supply line to tankless heater, or other equipment. This device can be installed either horizontally or vertically.

2. Lightly tighten packing gland nut.

3. Locate adjusting cap on spindle and adjust to required flow setting by matching up the desired setting with the line on the casting.

4. Insert lock washer and tighten lock screw to adjusting cap.

Adjustment

If a different flow setting is required, loosen lock screw and move adjusting cap to desired setting locating this over the matching line in the body. Tighten lock screw.

NOTICE

If minor leakage occurs, remove lock screw, lock washer and cap and lightly tighten packing gland nut.

Capacity

Watts No. LFP3 Flow Control is designed to give the rated capacity in gallons per minute as numbered on the adjustment cap at 50 psig supply pressure. For other pressures, refer to the Flow Table for corresponding adjustment setting. It is recommended that supply pressure be determined with a gauge to assure accurate flow.

For example, 80 psig supply pressure results in the following:

“ATTN. INSTALLER: After installation, please leave this Instruction Sheet for occupant’s information.”

Flow Table (gpm)

SUPPLY

PRESSURE PSI

30 2.3 2.7 3.1 40 2.7 3.1 3.6 *50 3 3.5 4 60 3.3 3.8 4.4 70 3.5 4.1 4.7 80 3.8 4.4 5.1 90 4 4.7 5.3 100 4.2 4.9 5.6 110 4.5 5.2 5.9 120 4.6 5.4 6.2 130 4.8 5.6 6.4 140 5 5.8 6.7 150 5.2 6.1 6.9

*Adjustment Cap Settings

ADJUSTMENT SETTING NO.

3 31⁄2 4

Lock Screw

Lock Washer

Adjusting Cap

Spindle

Packing Gland Nut

ADJUSTMENT SETTING NO. FLOW GPM

3 3.8

⁄2 4.4

WATTS No. P3 No. Andover, MA

5.1

G.P.M.

21⁄2 3 31⁄2 4

▼

Vertical marker line just to left of 3 gpm marker line signifies minimum adjustable volume (approx. 21⁄2 gpm) when supply pressures exceed 50 psi.

50 P.S.I.

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

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.

A Watts Water Technologies Company

USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com

Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca