Water pipe installation
1. You do not need to equip extra expansion tank when there's open type expansion tank on top part of the existing
thermal storage tank. However, if you do not have expansion tank, you will need to construct closed type pipe system
and equip expansion tank.
2. Water pipe installation system
1) Install the water pipe as shown in the below illustration. All the parts, other than DVM Hydro unit / Hydro unit HT,
must follow on site installation specification.
<Water pipe connection part>
Finishing tape
Water
pipe
Insulator
Installing hot water supply
Hydro unit
Heat
exchanger
on water
side
①
⑥
⑫
① Water pipe joint (union, flange)
② Thermometer
③ Manometer
④ Ball valve
⑬ Water Valve
20
DVM Hydro unit / Hydro unit HT
On site
installation
Ball valve (Used as
cleaning hole)
⑭
②
③
Cleaning device
④
⑪
⑦
⑤ Flexible joint
⑥ Drain (within the product)
⑦ Pump
⑧ Air vent
⑭ Pressure relief valve (Pressure safety valve)
⑧
Hot water tank
Water out
⑤
⑩
⑨
⑬
Water in
⑨ Expansion tank
⑩ Temperature sensor for hot water tank
⑪ Drain valve
⑫ Strainer