28
CHAPTER 5
CHAPTER 5 - EXALT COMBI UNITS - DOMESTIC PIPING
Pressure relief valve discharge piping must not be:
• Excessively long. Using more than 2 elbows or
15 feet of piping can reduce discharge capacity.
• Directly connected to a drain. Terminate
discharge piping within 6” from drain. Refer to
local codes.
• Plugged, reduced or restricted.
• Subject to freezing.
Do not install any valve between
pressure relief valve and tank connection or
on pressure relief valve discharge piping. Do
not plug pressure relief valve or discharge
piping. Improper placement and piping of
T&P relief valve can cause severe personal
injury, death or substantial property damage.
WARNING
Fig. 17 - EXALT Combi - Hydro-block Flow Diagram
5.2. Thermal Expansion
If a backow preventer, check valve or pressure reducing
valve is piped on cold water supply piping of water
heater, install an expansion tank on cold water supply
line to prevent thermal expansion from repeatedly
forcing open pressure relief valve.
The pressure relief valve is not intended for
constant duty, such as relief of pressure due to
repeated normal thermal expansion. Correct
this condition by installing a properly sized
expansion tank in the domestic water system.
Refer to expansion tank manufacturer’s
installation instructions for proper sizing.
NOTICE
CH SUPPLY
CH RETURN
CH RETURN
to PUMP
DHW SUPPLY
DHW INLET
Flow Sensor
DHW Temperature Sesnor
1”
1” 3/4”
3/4”
1”
1”
Stepper motor + cartridge
CH SUPPLY
Plate-to-plate heat exchanger
To Next Page
Loading...
Need help?
General