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1. Size piping no smaller than heater inlet and outlet.
Figure 26. Follow manufacturer's instructions to install.
3. Flow regulating valve must be installed. Size according
to continuous draw of heater. See Table 9. Follow
manufacturer's instructions to install.
4. Operating control with small adjustable differential
scale is recommended. Install in temperature control
tapping in heater plate.
a. Use cold water supply header with individual risers
to each heater. Size header by increasing one pipe
size for each additional heater.
b. Use hot water outlet header with individual risers
to each heater. Size header by increasing one pipe
size for each additional heater.
c. Do not pipe multiple heaters in series.
6. In hard water areas, soften cold domestic water supply
to heaters to prevent lime build-up.
Part No. 550-141-935/0215
temperature of 130°F or less.
manufacturer's recommendations and instructions.
needs will scald and cause injury.
children to use a hot water faucet or draw their own bath. If anyone using hot water in the
building fits this description, or if state laws or local codes require certain water temperatures
Install automatic mixing valve set according to those standards.
Tankless Heater Ratings
&RQWLQXRXV GUDZ
Tankless
(no recovery period)
heater model
GPM
78-24
6.5
Tankless Heater Piping
Inlet and outlet
tappings
¾"
comply with valve
27
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