Installation of Indoor Unit
Installing recirculation pump
When is used with sanitary water tank, it is STRONGLY recommended to install
recirculation pump to prevent flooding out cold water at the end of hot water supply and to stabilize the
water temperature inside the sanitary water tank
- The recirculation pump should be operated when sanitary water demand is not required. Therefore,
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 x R
k : 1.2 ~ 1.5 is recommended. (If distance between pump and tank is far, then choose high number)
V : Volume of sanitary water 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 sanitary water demand.
Sanitary
Water Tank
Recirculation
Pump
External
Time Scheduler
Check Valve
Shower
(End of Hot
water supply)
Hot water supply
City water
Water In
Water Out
ENGLISH
Installation Manual
39
Summary of Contents for AHNW096A0
Page 92: ...92 Air to Water Heat Pump ...
Page 93: ......
