RA-‐OM-‐713
10
SYSTEM MATCH – FAUCETS AND HEATER
When a Seisco water heater is selected for the home or building, the faucets should also be
selected to match the flow rating and temperature rise specifications of the heater. The
Seisco water heater specifications can be found in the Product Description and
Specifications section of the Product Guide. Sometimes, this is overlooked and the user
discovers that the faucets in the home are a higher flow rate than the design of the Seisco
model(s) selected.
SOLUTIONS FOR HIGH FLOW APPLICATIONS
Another oversight may be the lifestyle of the user. For instance, if the user wants to take two
showers at the same time or run the washing machine and the bathtub at the same time,
then the flow rate demands of the water heater are increased, sometimes beyond the
capability of the Seisco heater. Multiple Seisco heaters are used for higher flow applications,
such as for multiple task lifestyles, whirl pool and Jacuzzi tubs and body spa showers as
well. Refer to Product Applications and Diagrams section of the Product Guide for
recommended multiple Seisco heater arrangements. Note, it is important to evaluate the
electrical capacity of the home or building when selecting multiple Seisco heaters for a high
flow application. Refer to the Electrical Service Requirements and Sample Load Calculations
section in the Product Guide.
Typical Flow-‐Use Rates in Gallons per Minute (GPM)
Fixture
Type
Lavatory Bathtub Shower Kitchen
Sink
Pantry
Sink
Laundry
Sink
Dishwasher
Flow
Rates
0.5-‐1.5
2.0-‐4.0
1.5-‐3.0
1.0-‐1.5
1.5-‐2.5
2.5-‐3.0
1.0-‐3.0
TEMPERATURE ADJUSTMENT
After the water heater has been installed and the operational checks are completed, the
output of the hot water can be measured and adjusted if necessary. The temperature-‐
adjusting knob can be found on the left side of the control board. The factory setting is
usually between 118 and 122 degrees F. The knob will usually be in the 2 to 3 o’clock
position. Turning the knob to the left decreases the temperature and turning it to the right
increases the temperature.
Note: it is important to understand the effects of increasing the temperature above the
factory setting as follows:
•
A higher temperature setting could cause the water heater to use more power, thus
energy savings are reduced.
•
A higher temperature setting could increase the potential for scaling and sediment
build-‐up.
•
The water heater may not achieve a higher temperature setting, if the flow rate is
greater than its designed temperature rise capacity. Check to insure that the proper size
model has been chosen for the application.