LMD DIRECT VENT SERIES PACKAGED
LOW MASS STEEL BOILERS

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The LMD Boiler is your answer to costly and ineffective ELECTRIC HEAT. With its compact design, the LMD can be installed in a space as small as a closet.

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FEATURES

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Direct vent oil fired hot water boilers, Model Nos. LMD-75, LMD-100 and LMD-110 are approved for horizontal thru the wall venting.
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Featuring minimum clearance to combustibles - sides 2", rear 2", front 12", chimney connector 9"
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Suitable for closet or alcove installation and  for installation on combustible flooring
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No chimney or power vent required - The LMD can be vented up to 20 feet horizontally without a power vent, making the installation and maintenance of the boiler easier and less costly
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Prepurge and postpurge control - Prepurge is provided to assure clean starts and is accomplished through the use of a delayed oil valve. The postpurge timer is supplied to cool the combustion head and eliminate combustion gases from the venting system producing clean, efficient boiler operation
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Flexible Stainless Steel Vent Kit - The vent kit is available in three lengths: 10, 15, and 20 foot lengths of five inch flexible stainless steel pipe and a stainless vent termination end. The kit also provides the parts necessary for combustion air intake. Available in a combination vent or standard intake and exhaust vents
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Water Volume - The low 5-1/2 gallon water content provides heat and hot water delivery within minutes of start up. The low mass concept reduces standby losses associated with boilers during the off cycles and provides nearly instant heating with less full consumption.
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Efficiency - 83% to 85% AFUE - The high efficiency obtained with the LM Boiler are due to the design of the heat exchanger and the reduction of standby losses.
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Multiple Firing Rates - .75 to 1.10 - One boiler can be fired at three different firing rates, offering versatility and lower cost maintenance. Each unit is supplied with three nozzles for three firing rates.
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Compact Size - Standing 19-3/4 inches high, 19 inches wide, and 36 inches long, this compact boiler not only saves space, but can easily be installed in areas not approved for other boilers. The boiler can be easily cleaned from the front or the back.
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ASME Constructed and IBR Rated - Each boiler is constructed and hydrostatically tested in accordance with ASME boiler code. The capacity and efficiency are rated in accordance with the standards of the Institute of Boiler and Radiator Manufacturers (IBR).
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Lifetime Limited Warranty - Unlike other pro-rated warranties that often cover a small percentage of the cost of a new boiler after the 15th or 20th year, Thermo-Dynamics boiler replacement costs are never more than 50% of the replacement boiler list price.
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Built in "Air Scoop" purges air from the system providing a quiet, trouble free hot water heating system without the use of external devices.
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Weld fittings extend beyond the jacket and allow the service technician or homeowner to see small leaks that, if undetected could later damage the boiler shell and potentially void the warranty.
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Easy cleaning and maintenance accessibility to the combustion areas and the open tubes make it easy for the service technician to thoroughly clean the boiler. The LMD series can be cleaned from either end by simply removing eight brass nuts. The burner end clean-out door is a hinged, swing-away door. A well- maintained boiler continues to perform at a higher efficiency and is less likely to develop service problems.

EQUIPMENT

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LMD ETL Listed for DIRECT VENT without Power Ventor. LMD includes above equipment...
plus solid state post-purge burner, back-up high limit control with manual reset.

STANDARD EQUIPMENT

ASME Code Boiler w/ Swing-Away Door
Beckett AFII Burner
Flush Jacket
Delayed Oil Valve
Ceramic Fiber Combustion Chamber
Solid State Burner Post Purge
Altitude, Temperature & Pressure Gauge
Cadmium Cell Primary Relay
ASME Relief Valve
L8148A Aquastat Relay
Built-In "Air Scoop"
Auxiliary High Limit w/Manual Reset
3 Nozzles With Each Burner
007 or Equivalent Circulator (not mounted)
Brass Boiler Drain
Factory Assembled, Wired & Packaged
ETL Listed
Air Intake Attachment
*Carlin or Riello Available
National Board Stamped

 

Optional Equipment
Part Number
Boiler Stand
502900
Duct Coil - 60,000
530900
Duct Coil - 105,000
530910
Plate Type Domestic Coil
530800
Bronze Circulator
535160
Thermostatic Bypass Valve
535170

 

DIRECT VENT KITS
One per boiler required, separate intake and exhaust, requires two wall openings
PART NO.
SHIPPING WEIGHT
Direct Vent Kit 5" NP X 10ft.
281030
21lbs.
Direct Vent Kit 5" NP X 15ft.
281040
27lbs.
*Direct Vent Kit 5" NP X 20ft.
281050
33lbs.
*Note: 20 Ft. Kit Vent Hood packed in separate carton. 4" tubing shipped inside of 5" tubing.

 

COMBINATION INTAKE & EXHAUST
THERMO-VENT 175 Vent Kits One per boiler required.  
One wall opening required.
PART No.
Shipping Weight
TV-175 Combination Vent Kit- 10 ft.
281070
24lbs.
TV-175 Combination Vent Kit- 15 ft.
281080
20lbs.
TV-175 Combination Vent Kit- 20 ft.
281090
36lbs.
Note: Vent Hood Packed Separately from Tubing. 4" tubing shipped inside of 5" tubing.

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5" SINGLE WALL STAINLESS STEEL FLEXIBLE VENT SYSTEM - Includes:
1 - Sized Length of 5" Stainless Steel Flexible Vent Tubing
1 - Stainless Steel Combination Air Intake/Exhaust Vent Hood
1 - 4" Tee w/Vacuum Relief
1 - Sized Length of 4" Aluminum Flexible Intake Tubing
Attaching Screw, Silicon Sealer, Instruction Sheet
Note: Connector tubing standard NFPA 9" Clearance to Combustible.

SPECIFICATIONS

MODEL
LMD-75
LMD-100
LMD-110
GPH Input Rate
.75
1.00
1.10
Nozzle w/Pump
140 PSI
.65
.85
.90
Input BTUH
105,000
140,000
154,000
DOE Heating Capacity - BTUH
90,300
118,300
128,600
Net IBR Rating - BTUH
78,500
102,900
111,800
DOE AFUE Rating
85.2
84.0
83.0
Shipping Weight
310
310
310

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