Table of Contents
Advertisement
Description
Setting
Effect
Example:
Siemens Building Technologies
HVAC Products
5.15 Control of the bypass pump
You can choose the criterion for controlling the bypass pump.
Setting range
0 / 1
The bypass pump can be controlled according to two different criteria:
0
Parallel with the burner
The bypass pump runs only when the burner is in operation. During the remaining
periods of time (where there is no more condensation), the bypass pump is deac-
tivated.
1
According to the boiler return temperature
The bypass pump will operate based on the "Switching differential of the bypass
pump" (operating line 283
temperature" (operating line 252).
5.15.1 Parallel with the burner
Setting 0
The bypass pump operates according to the burner's on / off signal.
The boiler return temperature has no direct impact on the operation of the bypass
pump.
In that case, the settings made on operating lines 252 and 283
In general:
Burner
Bypass pump
ON
ON
OFF
OFF (on completion of the pump overrun time)
BR
1
0
BP
1
0
tPN
Basic Documentation RVP540 / RVP550
Description of the EXP settings
Unit
–
), and the "Setpoint of minimum limitation of the return
EXP
BR
BP
tPN
t
t
tPN
Factory setting
0
have no meaning.
EXP
Burner
Bypass pump
Pump overrun time
291/348
CE1P2488en
18.10.2002
Advertisement
Table of Contents
