Circulation Pump (Cir.) - Honeywell SDC Service Manual

SDC / DHC
7.3.5.2
NOTE
Function
Economy interval
(pulse)
Economy interval
(period duration)
EN2H-0221GE51 R0812
Tank priority (no heating demand):
• Connection immediately with minimum delay
• Reversion with configured delay P3
Tank parallel operation (combined operation: hot-water
loading/heating)
• Connection up to the stage of parameter 09 with minimum
delay for hot-water loading
• In case of further need via heating, further connection with
configured delay of parameter 02
• Reversion with configured delay parameter 03

Circulation pump (CIR.)

This function is only available, if a variable output is assigned to a
circulation pump
The output controls a hot-water circulation pump.
The use of the economy interval minimises the usual circulation
losses owing to adjustable switch-on intervals during operation
and determines the standstill time of the hot-water circulation
pump within an adjustable period (economy interval).
This parameter determines the length of the period and hence the
duration of the pause in a circulation pump pulse operating mode.
Economy interval
Pause
interval
Pulse
The switching-on degree is calculated from the ratio:
n = Pulse time/Period duration x 100 (%)
Example:
= Economy interval
Hydraulic Components
- Economy
Period duration
195