DTH Electric Boilers
USE & CARE MANUAL
(Revision November/05)
, Page
10.
3.8 CBE-EM DUAL ENERGY
INSTALLATION
In order to obtain a special rate from your
electric utility for residential use, your GTH boiler
can be hooked-up to an existing oil heater.
Contact your electric utility to find out if your
property is eligible for such rates and how to
register for them. For installations instructions,
refer to figure 12, 13 and 14.
The CBE-EM dual-energy control (an available
option, three-way, motorized valve (1’’ NPT F
standard) included) is specially designed to
electric utility standards. The CBE-EM control
selects the least expensive energy source based
on outside temperature, user choice or a signal
from your utility.
The CBE-EM dual-energy control will start up
the oil burner upon receiving the appropriate
signal, even if the thermostat in the house is not
calling for heat. It will shut off when the
temperature in the boiler reaches its target on
the Limit Control. It is for this reason that the
piping requires an anti-gravity valve (flow check
valve) or motorized zone valves.
A three-way, motorized valve (1’’ NPT F
standard) will direct the water flow either to the
oil-fired heater or to your DTH electric boiler,
depending on the signal received. This way,
your oil heater will cool down and eliminate any
energy loss, either through the chimney or by
way of conduction in the boiler room.
