83
ACCESSORIES INSTALLATION
ENGLISH
Installing recirculation pump
A DHW recirculation pump can be connected to increase comfort, as warm water will
immediately available when opening the tap.
-
To limit the energy consumption, external time scheduler to determine when the recirculation pump
should turn on and turn off is required.
- The operating duration time of the recirculation pump is calculated as follow :
Duration time [minute] = k x V / R
k : 1.2 ~ 1.5 is recommended. (If distance between pump and tank is far, then choose high
number)
V : Volume of DHW tank [liter]
R :
Water flow rate of pump [liter per minute], which is determined by pump performance curve.
- The pump operating start time should be prior to the DHW demand.
RECIR.
PUMP
DHW sensor
AB
A
B
DHW
3way-valve
Space heating
Cold water
Hot water
DHW TANK
※ Water In / Water Out installation scene may vary depending on the model.
WARNING
!
The schematic does not include all necessary safety devices. For details refer to Hydronic
schemes provides by local LG office.
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