Monitor boilers: home heating and hot water; propane, oil, natural gas


	Serving New England and Upstate New York

Home > for Homeowners


	Monitor condensing boilers are the most efficient, versatile, low-cost, low-maintenance heat sources available for your home. These ultra-efficient residential boilers are so much more cost effective than other gas furnaces or oil furnaces that they often pay for themselves in as little as 3 years.				"We have had a Monitor MZ installed since 1998 and it has been trouble free and very efficient. Our new home has over 6,000 square feet and we are using radiant in-floor heat. We are amazed at its quiet operation and love the low fuel bills" Jack Dorn, Momence, IL

	Monitor MZ Propane and Natural Gas-Fired Condensing Boilers

	More details: Installation and venting options		Provides heat and hot water simultaneously on 2 completely separate water supplies Ideal for radiant floor heating Uses propane or natural gas AFUE efficiency 92% to 97% 15 year warranty on heat exchanger Typical payback: Unit often pays for itself in as little as 3 years Completely self-contained system means minimal plumbing installation cost compared to conventional boiler Manufacturer suggested list price as low as $3,600 plus installation (will vary depending on plumbing and venting options): See your dealer for details.

MODEL	Model MZ25C	Model MZ40C	Model MZ25S

	This unit easily heats most homes and can produce an endless supply of hot water when combined with one of our storage tanks.	This model has the highest output of the Monitor line and is perfect for larger homes and commercial applications.	This model combines heat and domestic hot water and is perfect for one-bathroom homes or condos where space is at a premium.

BTU Input	94,500	71,000 / 142,000	94,500

AFUE Efficiency	92 to 97% (depending on return water temp.)	92 to 97% (depending on return water temp.)	92 to 97% (depending on return water temp.)

Built-in Controls & Functions	Priority pumped hi-temp circuit (for DHW or heat)	Priority pumped hi-temp circuit (for DHW or heat)	Integral DHW tank with separate aquastat

Dimensions	30"H x 22"W x 13"D	30"H x 22"W x 13"D	30"H x 22"W x 13"D

Weight	125 lbs	160 lbs	160 lbs

Vent Length	Vent runs longer than 13.5 feet derate input by 1% per 30 feet. Contact MPI if run is to exceed 100 feet

Fuel	Each MZ is factory tuned for natural gas, but propane kit is included. Conversion takes about 15 minutes.

	Monitor FCX Oil-Fired Condensing Boiler

	More details: Installation and venting options		Uses #1, #2 home heating oil or K-1 kerosene; the most cost effective way to heat your home Readily taps into existing oil tank Can be installed almost anywhere within 16 feet of external wall or roof for direct venting 95% efficiency State-of-the-art safety features Small footprint Height 33.5" x width 23" x depth 24.5" Approved for mobile home use Life expectancy 20-30 years Typical payback: Unit often pays for itself in as little as 3 years Manufacturer suggested list price plus installation (will vary depending on plumbing and venting options): $ 4,250. See your dealer for details.

	BS Series Stainless Indirect DHW Storage Tanks

			The Monitor BS Series of stainless domestic hot-water storage tanks are among the world's finest. Since the tank does not actually heat the water (the boiler does), the actual efficiency will be dependent upon the efficiency of the boiler. When the boiler used is our MZ that efficiency should be in the 90% plus range. Traditional vented domestic hot water heaters are rated at only 50% to 60%. The Monitor BS Tanks are so well insulated that the stand by heat loss is 1/2° in 2 hours. They are designed for installation with the MZ gas fired units (as well as for the FCX for residential use) and are virtually immune to scale and lime buildup. The pleasing design and exceptional finish make them at home in world-class applications of all types.

Technical Specifications

Models		BS 25	BS 40	BS 50	BS 80

Nominal Storage	Gal.	25	40	50	80

Height	IN.	27.5"	36.4"	45.3"	63"

Diameter	IN.	23.6"	23.6"	23.6"	23.6"

All Pipe Connections	MPT	3/4"	3/4"	3/4"	3/4"

Mac DHW Pressure	PSI	100	100	100	100

Aquastat Range	F	68-176°F	68-176°F	68-176°F	68-176°F

Aquastat Differential	F	10.8°F	10.8°F	10.8°F	10.8°F

Inspection Port Opening	IN.	3.9"	3.9"	3.9"	3.9"

Nominal Exchanger Power (170°F Av. Boiler Water Temp.)	MBH	115	115	200	210

Nominal Reheat Time form 50°F to 140°F Stored	MIN.	10	15	12	17

Continuous output at 110°F	GPM	3.8	3.8	6.5	6.7

Nominal First Hour Draw at 70°F	GAL.	250	260	430	465

Dry Weight	LBS.	71	86	121	159

Ratings assume cold-water inlet at 50°F, boiler circuit average temp of 170°F and boiler output at least equal to the nominal heat exchanger power shown above.

Air drawn into boiler from outside — pre-warmed by outgoing exhaust
Mixed with fuel (LP, gas or oil)
2 stage heat exchanger system produces hot water within seconds
Reaches full temperature and efficiency in less than 90 seconds — traditional boilers take 10 minutes or more
Heated water pumped out through plumbing
Sealed combustion exhaust vented back out of house
All heat is captured inside house — No heat waste up chimney

Uses 30%-70% less fuel
Virtually silent operation
Lowest-emission, cleanest-burning boiler on market — exceeds strictest air quality standards by 60%
Highly versatile — replaces and greatly improves upon almost any other heating system
Great for radiant floor heating, baseboard, forced hot air, radiant wall panels, domestic hot water, snowmelt, and many other applications