THERMAL SPIKE PROTECTION
Why have Thermal Spike Protection:
When the desired temperature of the area heated is reached, the heating cycle of the furnace ends and
the intake damper closes. The fire dies down and becomes dormant due to a lack of oxygen and re-
mains in this state until there is a demand for more heat. This process does not occur immediately, so a
way to expend some of the additional heat produced during this transition state must be present to avoid
over heating of the furnace and boiling of the transfer fluid.
Thermal Spike Protection Methods:
The WinterGreen Furnace has High Temperature Setting in the Temperature Controller which is pre-set
at 190˚F and is designed to control an over heat condition. The Temperature Controller can operate a
solenoid valve which will allow the fluid to pass through a cooling unit to off-load the additional heat or
operate a fan on heater unit.
(See the “Plumbing Installation” section for Thermal Spike Protection
zone configurations.
There are many methods of off loading excess heat; your WinterGreen represen-
tative can recommend the best configuration for your specific needs.
The most common method of a Thermal spike Protection is to install a Heater Unit with an attached fan.
The Heater unit is generally located in an area where some residual heat is needed. The heated fluid
from the furnace is allowed to circulate through the Heater Unit constantly and when there is a Thermal
Spike the Temperature Controller activates the fan which quickly dissipates the temperature spike.
Thermal Spike Protection Outlet:
The WinterGreen Furnace comes equipped with an outlet on the back of the unit which is dedicated for
the activation of a Thermal Protection Device. This outlet is controlled by the Temperature Controller
and will only be energized should a Thermal Spike of 190˚F occur.
DO NOT PLUG ANY OTHER DEVICE OR APPLIANCE WHICH IS FOR
THERMAL SPIKE PROTECTION INTO THIS OUTLET.