Toyotomi Oil Miser OM-180 Installation Manual page 9

1. Install heat insulation material on the hot water piping to prevent heat loss.
2. In chosed systems we recommend the use of an antifreege solution to prevent freezing and corrosion.
Check with the plumbing installer for the proper mix.
3. Copper or stainless steel or cross-linked polyethylene pipe should be used for the main and branch
pipes.
4. Be sure to connect a hot water pipe with the Expansion Tank, and install at the inlet side of the
Circulation Pump.
5. Install an Air Separator and Air Release Valve in the hot water pipe to release air inside of the pipe.
6. Be sure to install a bypass circuit. (Closing the hot water pipe with a thermal valve or temperature con-
trol valve may cause problems in the Circulation Pump.)
7. Be sure to install unions in the hot water inlet and outlet sides for easy connections and/or removal.
Plumbing Example (For Hot water supply)
Temperature
and pressure
relief valve
Drain pipe
CAUTION: Always install the mixing valve on the hot water circuit piping.
Plumbing Example (For Heating)
Temperature
and pressure
relief valve
Drain pipe
Drain valve
Drain
Drain valve
Drain
Air separator
Air release valve
Mixing valve
Hot water supply line
Union
Water supply valve
Cold water
Strainer
supply
Base
(Non-comustible material)
Air release valve
Expantion Tank
Circulation pump
Union Bypass
Air release valve
Valve
Water supply valve
Header
Header valve
Hot water
Outlet
Differential
Pressure
valve
Hot water
Inlet
Header valve
Header
Drain valve
8