Takagi 710 Installation Manual And Owner's Manual page 42

Dual-purpose hot water heating (Domestic and Space Heating):
Thermostatic Mixing Valve
Heating Coil
(used with air-handler)
**Maximum allowable distance of
50-Ft. from water heater and
heating panel
* The circulation pump is to provide no less than 2 GPM and no more than 4 GPM through each activated
unit in the system.
Priority Control Devices such as a flow switch, an Aquastat or other electronic controller can be used to
prioritize the domestic water system over the heating system.
Warning: Follow all local codes, or in the absence of local codes, follow the most recent edition of the
National Standard Code, ANSI Z21.10.3.
Warning: This illustration is a concept design only. The reference to the 1/8
the State of Massachusetts. There are a wide variety of variations to the application of controls and
equipment presented. Designers must add all necessary safety and auxiliary equipment to conform to
code requirements and design practice. For more details, contact the manufacturer.
Diagramatic Layout of Radiant Heating and
Domestic Water Heater Per Mass. Code
Apply Correct
Thermal
Expansion
Tank-Size Per
Application
Pressure
Tempered
Water To
House
Thermometer
Thermometer
T
Check
Valves
Shut-Off
Valves
Pump (Must Be Sized Properly
With Each Application). Pump
Shall Run 60 Seconds Every 6
Hours
Cold Inlet
Check Valve Will
Have 1/8" Hole in
Shut-Off
Check, As Per
Valve
Mass. Code
Atmospheric
Vacuum Breaker
Gauge
P
Drain
Plug
Check Valve
T-Handle Gas
Shut-Off Valve
- 42 -
An approved Pressure Only Relied
An approved Pressure Only
Relief Valve, Tie to Location
Valve, Tie to Location approved By
approved by Local Codes and
Local Codes and Must Meet BTU
Must Meet BTU Rating of Takagi
Rating of water heater Model Used
Model Used
4" Gas Exhaust Vent (Discharge
Must Comply with Local and
State Codes). Can Not Be
Common Vented with Other
Appliances
Takagi
Hot Cold
Water Water Gas
Inlet
Outlet Inlet
Water
Filter
120 VAC Switch or Outlet
Unions
th
hole in check is only for