Watts PLT-5 User Manual

IS-PLT
Models: PLT-5, PLT-12
Potable Hot Water Expansion Tank
Installation Instructions
Support Tank in Optional
Horizontal Position
Optional Location
To System
Expansion
Tank
Optional Location
Water
Heater
Water
Supply
Watts
Backfl ow
Preventer
Watts Pressure Gauge
Watts
T&P Safety
Relief Valve
Discharge Line
Floor Drain
Listed by IAPMO
Technical Information
DESCRIPTION
PLT-5 ORDER
CODE 0067370
PLT-12 ORDER
CODE 0067371
Max. Pressure - psi 150 150
Max. Temp. - °F 200ºF 200ºF
Tank Volume - Gal. 2.1 4.5
Tank Acceptance - Gal. 1.26 1.26
Air Pre-charge - psi 20 20
Connections Size - In.
3
⁄4" Male
3
⁄4" Male
Diameter - In. 8 10
1
⁄2
Length - In. 11 13.5
Weight - lbs. 5.5 10.0
Acceptance Volume
AIR SIDE PRE-PRESSURE WATER SIDE VOLUME AT 150 (10.3 bar)
(psi) (bar) (gal.) (liter) (gal.) (liter)
PT -5 PT -12
20 (1.4) 1.48 (5.6) 3.42 (12.9)
40 (2.8) 1.26 (4.8) 2.88 (10.9)
60 (4.1) 1.0 (3.8) 2.49 (9.4)
80 (5.5) .80 (3.0) 1.85 (7.0)
!
WARNING!
Improper installation, adjustment, alteration, service or maintenance
can cause property damage, serious bodily injury or death. Read
instructions completely before proceeding with installation. Only
qualified personnel may install or service this equipment in accor-
dance with local codes and ordinances.
This Expansion Tank is designed and intended for water storage at
a maximum pressure of 150psi (10.3 bar). A maximum instantaneous
pressure in excess of 150psi (10.3 bar) or 200°F (93ºC) is UNSAFE
and can cause property damage, serious bodily injury or result
in death.
Do not exceed 80psi (5.5 bar) air charge. Air charge pressures
exceeding 80psi (5.5 bar) could become hazardous and will void any
and all warranties, either written or implied. Failure to follow these
instructions will result in the possibility of property damage, serious
bodily injury or death.
Disclaimer: The manufacturer of this tank does not accept any liability
or other responsibility for personal injury or property damage resulting
from improper use, installation or operation of this tank or the system
of which it is a part.
Notice: We recommend that all thermal expansion and safety relief
products be installed with adequate drainage provisions.

Watts PLT-5 Specifications

General

Brand	Watts
Model	PLT-5
Category	Water Heater
Language	English

Summary

Acceptance Volume

Technical Information

Safety Warnings and Disclaimers

General Warning

Improper installation, adjustment, or maintenance can cause property damage or injury. Read instructions fully before proceeding.

Pressure and Temperature Limits

Tank rated for max 150psi (10.3 bar) and 200°F (93°C). Exceeding these limits is unsafe and voids warranty.

Air Charge Warning

Do not exceed 80psi (5.5 bar) air charge. Exceeding limits is hazardous and voids warranties.

Installation Instructions

Pre-Installation System Check

Determine system pressure by opening and closing a faucet and reading the gauge.

Expansion Tank Pre-Charge

Set tank pre-charge to system pressure when tank is zero pressurized. Do not adjust when system is under pressure.

System Preparation

Shut off water supply and power to the water heater. Drain the system as recommended.

Tank Installation

Install tank vertically or horizontally with adequate bracing. Ensure drainage provisions are present.

Post-Installation System Check

Turn on water, flush fixtures to remove air, restore power, and check system pressure again.

Legal and Warranty Information

California Proposition 65 Warning

Product contains chemicals known to cause cancer or reproductive harm in California.

Limited Warranty

One-year warranty against defects in material and workmanship. Excludes damage from misuse or improper installation.