Check Valve; Installation Example - Bosch TRONIC 4000 C Installation Manual

Installation Manual
National Plumbing Codes require a drain pan for any water heater installation.
Failure to install one is the sole responsibility of owner and/or installer. Reference
UPC 2000 (Uniform Plumbing Code) Section 510 - Protection from Damage or IPC
200 (International Plumbing code) Section 504 - Safety Devices.

7.2.2 Check Valve

The pre-installed check valve is a secondary safety device to prevent inlet pressure
exceeding 123 PSI and back-fl ow of water in case of a water outage. Please do not
remove or alter it to ensure safe operation. Installer must add drainage to the port
according to National Plumbing Code.

7.2.3 Installation Example

This drawing is meant to demonstrate system piping only.
WATER LEAK
DETECTION
SENSOR
CATCH
PAN
Figure 10
1 6 |
AUTOMATIC WATER
SHUT-OFF VALVE
UNION
CHECK
VALVE
Bosch Tronic TR4000C Electric Tankless Water Heaters - BTC 722203301 A (08.2022)
BALL VALVE
CHECK VALVE
COLD WATER INLET
HOT WATER OUTLET
MIXING VALVE
(IF REQUIRED BY
LOCAL CODE)
UNION
PRESSURE
RELIEF (IF REQUIRED BY
LOCAL CODE)
DRAIN