Dual-Purpose Hot Water Heating - Takagi T-KJr2-IN Installation Manual And Owner's Manual

Thermostatic Mixing Valve
Thermometer
Heating Coil
(used with air-handler)
**Maximum allowable
**Maximum allowable distance of
distance of 50 ft. from
50-Ft. from water heater and
water heater and
heating panel
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
NOTICE
controller can be used to prioritize the domestic water system over the heating
system.
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.
This illustration is a concept design only. The reference to the 1/8
is only for 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.

-Dual-purpose hot water heating-

(Domestic and Space Heating):
Diagramatic Layout of Radiant Heating and
Domestic Water Heater Per Mass. Code
Apply Correct
Shut-Off
Thermal
Valve
Expansion
Tank-Size Per
Application
Pressure
Gauge
Tempered
Water To
House
Thermometer
T
Check
Valves
Shut-Off
Valves
Pump (Must Be Sized Properly
With Each Application). Pump
Shall Run 60 Seconds Every 6
Hours
29
An approved Pressure Only Relied
An approved Pressure Only
Valve, Tie to Location approved By
Relief Valve, Tie to Location
Local Codes and Must Meet BTU
Cold Inlet
approved by Local Codes and
Rating of water heater Model Used Must Meet BTU Rating of Takagi
Check Valve Will
Model Used
Have 1/8" Hole in
Check, As Per
Mass. Code
Atmospheric
Vacuum Breaker
P
Takagi
Hot
Water
Outlet
Drain
Plug
Check Valve
T-Handle Gas
Shut-Off Valve
│
Page
Installation
4" Gas Exhaust Vent (Discharge
Must Comply with Local and
State Codes). Can Not Be
Common Vented with Other
Appliances
Cold
Water Gas
Inlet Inlet
Water
Filter
120 VAC Switch or Outlet
Unions
th
hole in check