Brochure

DPM2
FUEL ECONOMIZER
The DPM 2 Fuel Economizer is
a must have accessory with
any hot water boiler installation.
The DPM 2 saves homeowners
money and makes their boiler
even more efficient than the
manufacturer designed it to be.
How the DPM 2 Works:
The DPM 2 regulates the temperature of the
hot water your boiler produces to heat your
home so that it more effectively matches heating
needs determined by how cold it is outside.
On very cold days, the DPM 2 allows your boiler
to operate at full capacity, producing a hot water
supply of 180°F.
On moderate temperature days, the DPM 2 will
lower your boiler’s output, limiting the hot water
supply produced to 140°F.*
The DPM 2 adjusts the boiler water temperature by
monitoring outdoor temperature and reducing how much
fuel is burned. This reduces fuel usage and fuel costs.
Increased Comfort:
During the vast majority of the heating season,
outdoor temperatures are warmer than the boiler’s
operating “design temperature”.
Thus the full capacity of the boiler at 180°F is
not required to heat the home on less frigid days.
On these moderate days, a 180°F hot water
supply can create an uneven heat from the boiler’s
rapid response to the thermostat.
By modulating boiler water temperature to match the
outdoor temperature demand, the DPM 2 creates a
steady, more even heat for superior home comfort.
The DPM 2 changes the boiler’s water temperature
gradually, reducing expansion noises in the home.
BOILER
HOT WATER
SUPPLY
WATER
RETURN
BASEBOARD
OUTSIDE TEMPERATURE
180°
50°F
DPM2
FUEL ECONOMIZER
50°F
BOILER BASEBOARD
OUTSIDE TEMPERATURE
HOT WATER
SUPPLY
140°
RETURN
Typical Boiler Operation
Outside Temperature . . . . . . . . . . . . . . . . . . . . . . 50°F
Water Supply Temperature . . . . . . . . . . . . . . 180°F
Boiler Heating Capacity . . . . . . . 100,000 BTU/hr
Boiler Fuel Consumption . . . . . . . . . 25,000 BTUS
Boiler Run Time . . . . . . . . . . . . . . . . . . . . 15 min./hr
Typical Boiler With DPM 2 Fuel Economizer
Outside Temperature . . . . . . . . . . . . . . . . . . . . . . 50°F
Water Supply Temperature . . . . . . . . . . . . . . 140°F
Boiler Heating Capacity . . . . . . . 100,000 BTU/hr
Boiler Fuel Consumption . . . . . . . . . 22,500 BTU
S
Boiler Run Time . . . . . . . . . . . . . . . . . . 13.5 min./hr
Fuel Savings . . . . . . . . . . . . . . . 2,500 BTU
SOR10%
How the DPM 2 Makes Your Boiler More Efficient:
How Much Can You Save
On Your Heating Bills?
Experts project that the typical savings that
may be realized from a DPM 2 outdoor reset
control to be approximately 10 to 15% per year,
depending on climate.
If you normally pay $1500 per year in space heating
fuel, you could save as much as $225 or more.
The DPM 2 will pay for itself and start putting
money back in your pocket in just over a year.
E
STIMATED FUEL SAVINGS USING DPM 2 CONTROL
**
30%
20%
10%
0%
60°
55°
50°
45°
40°
35°
30°
25°
20°
15°
10°
P
ERCENTAGE FUEL SAVINGS
OUTSIDE TEMPERATURE ()
**
Based on a Typical Boiler Design Temperature of 0°F and Hot Water Supply of 180°F
*
Check with your boiler manufacturer for recommended temperature limits.