Starting Up; Checking For Leaks And Purging Air; Adjusting The Temperature Dial; Adjusting The Flow - Bosch TRONIC 5000C Pro Installation Manual And Operating Instructions

18 | Installation
4.6

Starting up

4.6.1

Checking for leaks and purging air

B Verify all circuit breakers supplying power to the
water heater are turned off.
B Open all hot water taps supplied by the water heater
and inspect all water connections for leaks.
B With all hot water taps still open, inspect each tap to
ensure all air in the lines has been purged out.
B With the air purged and taps still flowing, turn on all
circuit breakers supplying the water heater.
B Close all hot water taps and proceed to the next
section.
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
95
Fig. 11
For example:
• For the WH17 unit, using the outlet ball valve, ensure
the flow rate does not exceed 2.3 gallons/minute.
• For the WH27 unit, using the outlet ball valve, ensure
the flow rate does not exceed 3.5 gallons/minute.
These figures are based on an inlet water temperature of
55 °F and a supply voltage of 240 volts. If the inlet water
temperature is lower than 55 °F, or if the supply voltage
is less than 240 volts, then the outlet temperature will be
lower than what is shown in Fig. 11. If a higher outlet
water temperature is desired, then reduce the flow rate
and/or supply the unit with 240 volts.
6 720 646 951 (2011/09)
Outlet temperature vs Maximum flow rate setting
(based on incoming water temperature of 55ºF)
17kW Heater
100 105 110
Outlet temperature (ºF)
4.6.2

Adjusting the temperature dial

B The temperature adjustment is made using the dial on
the bottom edge of the unit. The adjustment is
between approximately 95 °F and 131 °F. Turning the
dial clockwise increases the temperature setting as
indicated by the marking on the unit.
4.6.3

Adjusting the flow

B Open fully both inlet and outlet shut-off valves at the
heater, then:
B Turn on fully the highest flowing hot water faucet
(e.g., bathtub) served by the water heater.
B Adjust the outlet shut-off valve until the water flow
rate from the hot faucet corresponds to the value
given in Fig. 11 below.
27kW Heater
115 120 125
Before leaving the site, the installer should
demonstrate the unit to the user and give
them this guide.
US
131
130 135
6720646951-09.1V
Copyright