Instruction Manual

 Installation  Maintenance Instructions
Model XT LEAD-FREE*
Water Thermal Expansion Tanks
SPECIFICATION
Fill pressure (and air charge pressure)................ 40 PSI
Max. Supply Pressure.......................................... 80 PSI
For potable water applications
To obtain maximum e󰀨ectiveness 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 pre-
charge 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
1. Shut o󰀨 power or gas to water heater.
2. Shut o󰀨 cold water supply to water heater.
3. Drain water from heater (MAKE SURE THAT A FAUCET OR
OTHER FIXTURE IS OPEN TO PREVENT VACUUM BUILD-UP
4. 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, backow preventer, etc.
5. Strapping or bracing must be used when tank is installed in the
horizontal position. This will allow support of the tank when lled with
water.
6. Check tank pressure with a tire gauge and adjust pre-charge as
needed to match line water pressure.
7. Turn water supply back on.
8. A properly sized pressure relief valve set at a maximum of 150 PSI
must be installed in the system
9. 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
1. The tank pre-charge should be checked annually. The water pressure
must be removed from the tank to prevent a false reading. Shuto󰀨
water supply.
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.
MODEL XT INSTALLATION
NOTE: Model XT tanks are certified to NSF/ANSI 61 domestic
hot, but are suitable for temperatures up to 200° F.
TANK DIMENSIONS AND CAPACITIES
MODEL
NUMBER
MAXIMUM
SUPPLY
PRESSURE
psi
TANK
VOLUME
(gallons)
MAXIMUM
ACCEPTANCE
VOLUME
(gallons)
FACTORY
PRE-CHARGE
psi
DIMENSIONS
WEIGHT
lbs.
DIAMETER HEIGHT
SYSTEM
CONNECTION
XT-8 80 2.1 1.0 40 8 10 1/2 3/4NPT 5.5
XT-18 80 4.8 2.4 40 11 13 1/2 3/4 NPT 10
XT-35 80 9.0 4.25 40 12 1/2 17 1/4 3/4 NPT 15.5
T&P VALVE
TP1100A
DIRECTION OF FLOW
HOT WATER
HEATER
MODEL XT
HOSE BIBB
MODEL NR3XL
WATER PRESSURE
REDUCING VALVE
INLET SHUT-OFF
VALVE
COLD IN
HOT OUT
DRAIN
ISXT (REV. C 9/18)
*This product contains a weighted average lead content less than 0.25% for wetted surfaces.
ZURN WILKINS
1747 Commerce Way, Paso Robles, CA 93446 Phone:[phone] Fax:[phone]
www.zurn.com
®
®
! WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
! ADVERTENCIA: Cáncer y daño reproductivo - www.P65Warnings.ca.gov
! AVERTISSEMENT: Cancer et néfastes sur la reproduction - www.P65Warnings.ca.gov
2. Open a faucet to remove pressure from the system
3. 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 valve, then it should be replaced.
4. Turn water supply back on.
NOTE: This tank is not suitable for use on re sprinkler systems as
required by NFPA 13 or 13D.