Gas Adjustment; Converting To A Different Gas Type - Bosch Greenstar combi 100 p Installation And Service Instructions For Contractors

Service function 9.E: Turbine signal delay
This service function allows setting a time delay to prevent the appliance
starting up as a result of transient pressure spikes in the water supply.
Through spontaneous pressure change in the water supply, the flow
meter (turbine) can signal that DHW is being drawn and cause the burner
to come on unnecessarily.
The turbine signal delay can be set from 02 to 08 (0.5 seconds to 2
seconds) in increments of 0.25 seconds.
Default setting is 04 (1 second).
Service function 9.F: Heating zone pump post purge
This service function allows setting a pump post purge time after the end
of the heat demand from the external control.
The pump post purge time can be set from 01 to 10 (1 to 10 minutes).
Default setting is 03.
Service function A.b: Display DHW temperature
This service function allows displaying the current DHW temperature.
Service function A.C: Display DHW tank temperature
This service function allows displaying the temperature of the DHW tank
temperature sensor.
Service function b.F: Solar DHW backup heating delay
For systems with a solar thermal DHW tank in series before the DHW line
of the combi boiler. DHW heating by the boiler will be suppressed
expecting that solar thermal DHW will reach the hot water temperature
sensor prior eliminating the need to run the boiler. Set the heating delay
in accordance with system conditions.
If this setting is enabled, the DHW demand signal is no longer available
 page 38.
The start delay can be set between 0 to 50 (0 to 50 seconds) in
increments of 1 second.
Default setting is 00.
Service function C.d: Display current heat demand
Available displays are:
• 00: No heat demand
• 01: Space heating demand present
• 02: DHW heat demand present
Greenstar combi 100 p / 151 p
11

Gas adjustment

DANGER:
Personal injury and property damage
▶ This conversion shall only be performed by a trained and certified
installer in accordance with the manufacturer's instructions and all
applicable codes and requirements of the authority having
jurisdiction.
▶ If the information in these instructions is not followed exactly, or the
installation, adjustment, modification, operation or maintenance is
carried out by an unqualified person, a fire, explosion or generation
of large amounts of carbon monoxide may result causing property
damage, personal injury or loss of life.
▶ Always disconnect the appliance from the mains power before
performing any work. Always disconnect the appliance from the
mains power before performing any work. Take measures to prevent
accidental reconnection.
▶ The installer is responsible for the proper conversion of this
appliance.
▶ The conversion is not complete until the operation of the converted
appliance is checked as specified in these instructions.
Adjustment to different flue systems using throttle discs or baffles is not
necessary.
NG
• The appliances are set at the factory to a Wobbe index of 1.333 BTU/
3 3
ft (49.6 MJ/m ) at 60 °F (approx. 15 °C), a gas supply pressure of
30" HG and 7.0" W.C. (17.4 mbar), and then sealed.
11.1

Converting to a different gas type

WARNING:
Risk of fatal injury from explosion!
Escaping gas can cause an explosion.
▶ Allow only a licensed contractor to work on parts that carry gas.
▶ Close the gas shut-off valve before working on parts that carry gas.
▶ Replace used seals with new seals.
▶ After completing the work on parts that carry gas, carry out a leak
test.
A gas conversion kit with instructions for gas conversion is included in
the scope of delivery.
▶ Follow the instructions from the conversion kit.
With the gas conversion kit there is no setting of the gasair ratio (CO
O ) necessary.
2
Gas adjustment | 45
or
2
6720872361 (2017/04)