Submittal Sheet

VDKIJ102 © Danfoss 01/10
Data sheet ESBE VTC
3-Way Thermic Valve
1
The ESBE VTC thermic valve is a thermostatic
by-pass valve which regulates the temperature
of either the supply out or the return of water
in a hydronic heating system. In a conventional
application, the VTC valve safeguards non-
condensing boilers against corrosion from
condensation that would result if a minimum
flue gas temperature is not maintained. With
the VTC the boiler is able to recover and keep
up with the drop in water temperature. The
VTC valve can also be used on a solid fuel
boiler or a solar application where a minimum
or maximum water temperature is trying to
be maintained.
Applications:
Ordering Information:
Code No. Series Cv Valve Size
Connection
193B1700
VTC511
10.4 1”
FNPT
193B1701 16.2 1¼”
Code No. Series Typical Application
193B1702 122°F (50°C)
Return line boiler protection193B1703 131°F (55°C)
193B1704 140°F (60°C)
193B1709 149°F (65°C)
Boiler outlet, storage tank feed193B1705 158°F (70°C)
193B1706
167°F (75°C)
Code No. Description
193B1708 O-ring for brass plug
VTC Valve Body, Without Thermostat*
Internal VTC Temperature Element
Spare Parts
* Valve body and thermostat sold separately. Order one valve body and one thermostat to assemble a
complete valve
Typical Applications:
High mass non-condensing boiler coupled •
with low return water situations, i.e. snow
melt systems or high mass concrete radiant
floor heating
Gravity hot water conversion systems•
Solid fuel boilers feeding storage tanks or a •
heating system
Solar heating and stratification control for •
storage tank
Features:
Thermostatically maintains a high and steady
•
return temperature increasing the life and
efficiency of the heat source
Protection from thermal shock within non- •
condensing boilers
Self contained thermostatic element with no •
adjustment required
Interchangeable thermostat elements, to •
meet temperature requirements
Low leakage rate through the ports of •
the valve