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INSTALLATION
Form No. EBOOSTERBWM-1009
9
Plumbing Connections
Use the following procedures to connect the inlet and outlet
water lines as well as inspect the system once the plumbing
connections are complete.
Do not connect an expansion tank of any type to booster
water heater lines.
Use only plumbing material suitable for a minimum water
temperature of 200°F (93°C). Materials used must meet
National Sanitation Foundation (NSF) specifications and
all local plumbing codes and regulations.
Do not connect booster water heater directly to a boiler or
furnace coil or any other uncontrolled temperature
source. The booster heater thermostat could be damaged
causing unit to overheat.
Do not connect booster water heater to domestic
(consumer) dish machines or other domestic utilized
equipment. Hot water from booster heater may damage
domestic equipment resulting in a hazardous condition.
Use dielectric couplings when connecting dissimilar
metals, such as galvanized to copper. This will prevent
electrolysis or premature plumbing damage.
DO NOT turn or adjust inlet water connection on Magnum
Series booster water heaters. Doing so will change the
internal water flow.
Do not back out or loosen any pipe fittings. Doing so may
cause leaks.
Do not lay unit on the side with the control panel. Damage
to the unit could occur.
Incoming water in excess of 3 grains of hardness per
gallon (GPG) (0.75 grains of hardness per liter [GPL]) must
be treated and softened before being supplied to booster
heater(s). Water containing over 3 GPG (0.75 GPL) will
decrease efficiency, increase energy use, and reduce the
operating life of the unit through increased lime build-up.
Product failure caused by liming or sediment buildup is
not covered under warranty.
Do not use deionized or reverse osmosis (R.O.) treated
water in booster water heaters. Damage to booster heater
may occur.
NOTE: Product failure caused by liming or sediment buildup is
not covered under warranty.
NOTICE
CAUTION
WARNING
Inlet
(Refer to Figure 5, 6, or 7)
1. Connect the booster water heater inlet to a hot water
supply line from the regular water heater. Water
temperature from the regular water heater should be 110°
or 140°F (43° or 60°C) and should not exceed 160°F
(71°C). Minimum temperature differential between inlet and
outlet should never be less than 20°F (11°C).
NOTE: The red mark on the inlet and outlet water pipes of
Magnum Series units must remain in the top most
position.
2. Provide the inlet line with a shut-off valve, (a full opening
gate or ball type), one temperature/pressure gauge, and
the pressure reducing valve. Set pressure reducing valve
at 20 psi (138 kPa) flow pressure.
NOTE: A 3/4" union and a drain valve are required
for easy servicing.
NOTE: Be sure water flows through the pressure reducing
valve in the proper direction. Check directional arrow.
Valve will reduce pressure only during flow conditions.
NOTE: An optional back pressure relief valve is available for
installation on the water inlet line when local plumbing
codes require a check valve.
3. Install a temperature/pressure gauge in both the inlet and
outlet lines. Install the temperature sensing bulb in the
water stream. The gauge must be mounted upright (see
Figures 8 and 9).
NOTE: Tighten gauge during installation by only turning the
1/2" brass nut. DO NOT turn the face of the gauge.
Turning the face will cause inaccurate measurements.