16
EN
This will cause the relief valve to open during
each heating cycle. We recommend installing
an expansion tank to control thermal
expansion.
Connect the thermal expansion tank to the
cold water supply line (see Installation
Instructions).
For additional information, contact installing
contractor, plumbing inspector, or water
supplier.
NOTE
• Drain valve and T&P relief valve is included
in packing box of the water heater.
They must be installed in the opening
provided for this purpose.
Installing T&P Relief Valve
Use T&P relief valve included in packing.
Installing Drain Valve
Thermal Expansion
Determine if a check valve is present on the
inlet water line. Check with your local water
utility. A check valve located in cold water inlet
line will create a “closed water system”.
As water is heated, it creates an increase in
pressure within the water system because the
increased volume of water doesn’t have a
place to go.
Referred to as “thermal expansion”, the rapid
pressure increase can quickly reach the safety
setting of the relief valve.
Unpacking and Removing
Shipping Bolts
NOTE
• Accessories (drain valve and T&P relief
valve) are attached on pallet. Keep it for
installation.
Unpack all shipping materials from the water
heater for proper operation and inspect it for
shipping damage.
1
Remove carton and shipping materials.
2
Remove the screws from the shipping
brackets.
3
Pull out the shipping brackets.
4
Slightly tip the water heater and carefully
roll the water heater off the pallet.
ڸ
ڹ
Accessories
1
Apply Teflon tape on the G end to prevent
leaking.
2
Install the drain valve in the opening
marked “Drain Valve”.
1
Apply Teflon tape on the G end to prevent
leaking.
2
Install the T&P relief valve in the opening
marked T&P relief valve.
Summary of Contents for WH20S F5
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