Bradford White EVERHOT TG-150E-N(X Installation And Operation Instruction Manual page 18

potable water. Unions should be installed on both the hot and cold water lines for future servicing
and disconnection of the water heater. Install a shut-off valve in the cold water supply line.
2. In order to service the water heater in the event the heat exchanger needs to be flushed of
mineral deposits, tee fittings with shut-off valves and service connections to hoses should be
installed. Also, install a shut-off valve to the hot water supply to isolate the service tee fittings. A
plumbing installation kit, which includes these fittings and a pressure relief valve, is available from
your supplier. Refer to the piping diagrams in Section IV, "Water Connections".
3. Install a pressure relief valve on a tee connection from the hot water outlet piping from the water
heater. Refer to the piping diagrams (Figure 6 and Figure 7) and pressure relief valve warning in
Section IV, "Water Connections."
4. In cold climates, where piping can freeze during an extended power failure, drain solenoid valves
should be installed on the cold and hot water supply lines to allow water to drain from the water
heater when power is interrupted. Refer to the piping diagram (Figure 8) "Recommended Piping
for Power Failure Freeze Protection" in Section IV, and contact your Bradford White dealer if
assistance is needed.
5. If this water heater is installed in a closed water supply system, such as the one having a back-
flow preventer in the cold water supply, provisions must be made to control thermal expansion.
DO NOT operate this water heater in a closed system without provisions for controlling thermal
expansion. Warranties do not cover damages from thermal expansions, such as pressure bulges
and/or deformities. Your water supplier or local plumbing inspector should be contacted on how
to control this situation.
6. Purge the cold water line prior to connecting to the water heater to remove debris. Debris will
clog the mesh strainer of the inlet filter. The inlet strainer prevents debris from damaging the flow
sensor or clogging the coil. It may need to be cleaned periodically and should be cleaned after
the initial operation. DO NOT operate the water heater without the filter in place. In areas where
sediment may be periodically present in the water supply, a Y-type strainer (#20 mesh) or
cartridge filter should be installed on the cold water inlet to the water heater to prevent the water
heater fine mesh strainer from getting plugged and restricting water flow.
7. After installation of the water lines, open the main water supply valve and fill the water heater.
While the water heater is filling, open several hot water faucets to allow air to escape from the
water system. When a steady stream of water flows through the faucets, close them and check
all water connections for possible leaks.
8. This water heater may also be connected to a circulating pump or storage tank for increased flow
capacity during high demand periods.
9. Commercial installations may require more than one water heater piped together in a manifold to
supply enough capacity for high temperature and high water flow applications. Special controls
are available from your Bradford White supplier for operating more than one water heater
together. These controls stage the operation of the water heaters for the flow rates and control
the amount of flow through each water heater. Order p/n MSA-2M for the electronic manifold
control for the first and second water heater and p/n MSA-2S for the wiring harness for each
additional water heater to be controlled. A maximum of (5) water heaters can be connected
together. Alternatively, to connect only (2) water heaters, an EZConnect
EZC-1US, can be used. Instructions are included with these parts.
Take care when using pipe dope or thread sealing tape to avoid clogging the inlet screen and water
flow sensor. Wipe off excess pipe dope from threads before connecting to the water heater.
Commercial dishwashers will require either more than one water heater, or a storage tank to supply a
sufficient volume of hot water.
NOTICE
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TM
harness, p/n REU-