THE LMGD DIRECT VENTSERIES

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The LMGD-Series provides "Sealed Combustion". This feature provides an important safety consideration. Today's houses are super-insulated and tightly constructed, consequently sufficient combustion air may not be available. The LMGD unit, with its unique stainless steel combination air intake and exhaust assures efficient combustion through the sidewall. Available only in Direct Vent.

GREAT FOR.............

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New Construction

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Electric Heat Conversion

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Homes with Poor or No Chimneys

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Eliminates the Cost of a Chimney

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No Standing Pilot to Waste Gas

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Approved for Closet and Alcove Installation

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Combination Intake and Exhaust Assures Balanced Flue

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Eliminates Wasted Energy by Utilizing Outside Air

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Safe.... Combustion Gases are Sealed to the Outdoors

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Design Certified for Combustible Floors

FEATURES AND BENEFITS

The low mass gas boiler from Thermo-Dynamics is a wet-base, horizontal tube, two pass boiler design. Using proven industry designs for efficiency and durability, coupled with an indirect domestic water system, this compact boiler offers installers installers many ways to meet the comfort requirements of their customers.
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 eliminates standby losses associated with boilers during the off cycles and provides almost instant heating with less fuel consumption.
83% to 84-1/2% AFUE EFFICIENCY - No Vent Damper Required - Non-Condensing. This high efficiency obtained with the LMG Boiler are due to the design of the heat exchanger and the reduction of standby losses.
BURNER DESIGN - Quiet "Pre-mix" burner design performs with 3" WC pressure on either natural or LP Gas.
HOT SURFACE IGNITION
THREE MODELS OFFERED - 90,000, 105,000, and 120,000
NO DRAFT HOOD REQUIRED
SAFETY SYSTEM - Offers multi-check gas safety shutdown. This system senses proper flue pressure and burner air flow before opening the main gas valve.
COMPACT SIZE - Standing 19-3/4 inches high, 19 inches wide, and 36 inches long, this compact boiler not only saves space but can often be installed easily where other boilers cannot.
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.
LIFETIME LIMITED WARRANTY - Unlike other pro-rated warranties that often only cover a small percentage of the replacement cost after the 15th or 20th year, Thermo-Dynamics boiler replacement costs are never more than 50% of the replacement boiler list price.
BUILT IN "AIR SCOOP" - purges air from the system providing a quiet trouble free hot water heating system.
EASY CLEANING AND MAINTENANCE - Accessibility to combustion areas and the open tubes make it easy for the service technician to thoroughly clean the boiler. The LMG-Series can be cleaned and serviced from either end by simply removing eight bras nuts. The burner end clean-out door is a hinged, swing-away door. A well-maintained boiler continues to perform at high efficiency and is less likely to develop service problems.

EQUIPMENT/SPECIFICATIONS

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Standard Equipment
ASME Code Boiler with Swing-Away Door
Flush Jacket - Powder Coated Finish
Altitude, Temperature and Pressure Gauge
Pre-Mix Gas Burner (Natural or LP)
Hot Surface Ignition
Safety Pressure Switches
High Limit Control
Circulator/Burner Relay
007 Circulator or Equivalent
ASME Relief Valve
Brass Boiler Drain
Built-in "Air Scoop"
Stainless Steel Combination Vent Hood
Stainless Steel 5X4 Vent Adapter
 
Optional Equipment
Boiler Stand
Duct Coil- 60,000
Duct Coil- 150,000
Plate Typed Domestic Coil
LP Conversion Kit
Thermostatic Bypass Valve

Ratings and Capacities
MODELS
AGA INPUT BTU/HR
HTG CAPACITY BTU/HR
I=B=R NET OUTPUT BTU/HR
AFUE RATINGS
SHIPPING WEIGHT
LMGD - 90
90,000
76,000
66,300
84.5
300
LMGD - 105
105,000
88,000
76,600
83.7
300
LMGD - 120
120,000
100,000
86,700
83.0
300

MODEL
CLEARANCE FROM COMBUSTIBLES
GAS INLET PIPING
MANIFOLD PRES NATURAL OR LP
SIDES/FRONT
JKT FRONT
VENT CONN
LMGD - 90
4"
6"
6"
1/2" Dia.
3" W.C.
LMGD - 105
4"
6"
6"
1/2" Dia.
3" W.C.
LMGD - 120
4"
6"
6"
1/2" Dia.
3" W.C.
NOTE: Specify (1) Model Number (2) Type of Gas - Natural or LP
Handcrafted by ASME Welders in Pennsylvania, America's "Industrial Heartland"

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