User manual

22
Water pipe installation
1. Use closed type water pipe and closed type expansion tank when constructing water piping system.
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 specication.
<Water pipe connection part>
DVM Hydro unit / Hydro unit HT
Water
pipe
Insulator
Over 80 mm
Finishing tape
f Installing hot water supply
①
⑥
②
⑭
⑪
⑧
⑩
⑦⑫
③
⑨
⑬
On site
installation
Ball valve (Used as
cleaning hole)
Water out
Water in
Buer tank
(Mixing tank)
Cleaning device
Hydro unit
Heat
exchanger
on water
side
④
⑤
①
Water pipe joint (union, ange)
⑤
Flexible joint
⑨
Expansion tank
②
Thermometer
⑥
Drain (within the product)
⑩
Temperature sensor for hot water tank
③
Manometer
⑦
Pump
⑪
Drain valve
④
Ball valve
⑧
Air vent
⑫
Strainer
⑬
Water Valve
⑭
Pressure relief valve (Pressure safety valve)