Setting The Pump Performance - salmson SIRIUX Série Manuel D'installation Et Mise En Service

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System type
Heating systems
Heating-ventilation/air-
conditioning systems
Heating systems

8.4 Setting the pump performance

During planning, the unit is designed for a specific duty point (hydraulic full-
load point for maximum heating power requirement calculated). During com-
missioning, the pump capacity (delivery head) must be set according to the duty
point of the unit (see also 4.3).The factory setting does not comply with the
pump capacity required for the system. It is determined with the help of the
pump curve diagram for the selected pump type (from catalogue/data sheet).
See also Fig. 8 to 10.
82
System conditions
1. Two-pipe systems
• Pump is installed in the feed pipe.
• The feed temperature is controlled
by atmospheric conditions.
An increasing feed temperature
increases the flow rate.
2. One-pipe systems
• Pump is installed in the return pipe.
• The feed temperature is constant.
A falling feed temperature reduces
the flow rate.
3. Primary circuits with condensing
boiler
• Pump is installed in the return pipe.
A falling feed temperature reduces
the flow rate.
1. Constant flow rate
1. All systems
• Pump is installed in the feed pipe.
• The feed temperature falls during
low load periods (e.g. at night).
• The pump runs 24 hours without
external control at the mains.
Recommended
control mode
p-T
Manual
control mode
Setback
operation
Pompes Salmson 01/2013