ZURN XT Water Thermal Expansion Tanks Instruction Manual
- June 4, 2024
- ZURN
Table of Contents
ZURN XT Water Thermal Expansion Tanks
Water Thermal Expansion Tanks
This product contains a weighted average lead content less than 0.25% for wetted surfaces.
SPECIFICATION
- Fill pressure (and air charge pressure)……………. 40 PSI
- Max. Supply Pressure…………………………………… 80 PSI
For potable water applications
To obtain maximum effectiveness and to prolong XT series tank life, ADJUST TANK PRE-CHARGE TO EQUAL LINE PRESSURE, NOT TO EXCEED 80 PSI.
Example:
If normal city water pressure at tank location is 55 psig, increase air
precharge in XT tank to 55 psig. This can be done with a bicycle pump or air
compressor. Pressure can be checked with a standard tire gauge.
INSTALLATION
- Shut off power or gas to water heater.
- Shut off cold water supply to water heater.
- Drain water from heater (MAKE SURE THAT A FAUCET OR OTHER FIXTURE IS OPEN TO PREVENT VACUUM BUILD-UP
- With water completely drained from water heater, install XT Series
- Thermal Expansion Tank by teeing into a cold water supply as shown. XT tank must be installed on the cold water supply and between water heater and check valve, backflow preventer, etc.
- Strapping or bracing must be used when tank is installed in the horizontal position. This will allow support of the tank when filled with water.
- Check tank pressure with a tire gauge and adjust pre-charge as needed to match line water pressure.
- Turn water supply back on.
- A properly sized pressure relief valve set at a maximum of 150 PSI must be installed in the system
- If the supply pressure exceeds 80 PSI a properly sized pressure reducing valve must be installed on the system.
Warning: Failure to follow these instructions is UNSAFE and may result in serious injury or death and/or property damage.
MAINTENANCE
- The tank pre-charge should be checked annually. The water pressure must be removed from the tank to prevent a false reading. Shutoff water supply
- Open a faucet to remove pressure from the system
- Check tank pressure with a tire gauge. Add air to tank if it doesn’t match the incoming water pressure. If the tank pressure is zero or if water discharges from the air
MODEL XT INSTALLATION
TANK DIMENSIONS AND CAPACITIES
WARRANTY:
ZURN WILKINS Valves are guaranteed against defects of material or workmanship when used for the services recommended. If in any recommended service, a defect develops due to material or workmanship, and the device is returned, freight prepaid, to ZURN WILKINS within 1 year from date of purchase, it will be repaired or replaced free of charge. ZURN WILKINS’ liability shall be limited to our agreement to repair or replace the valve only.
WARNING : Cancer and Reproductive Harm – www.P65Warnings.ca.gov
ZURN WILKINS
1747 Commerce Way, Paso Robles, CA 93446
Phone:855-663-9876
Fax:805-238-5766