THE HT SERIES

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A wet-base design, a horizontal tube, and a three-pass heat exchanger make this one of the most efficient boiler designs available.

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A 5-GPM tankless coil with a 30-gallon boiler water content assures abundant hot water.

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Forced draft burner eliminates chimney draft problems.

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Multiple firing rates on the same unit.

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One-piece boiler construction ensures years of trouble-free service. There are no push nipples or "O" rings to leak.

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Heat exchanger easily accessible for cleaning.

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The 85% AFUE rating is among the highest Department of Energy (DOE) ratings.

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Available for sidewall direct vent applications. No power ventor required.

Now Featuring the

Beckett AquaSmart Boiler Control

FEATURES

The HT Series boiler offers the ultimate in design and efficiency. A three-pass, horizontal tube, wet-base, Scotch Marine design boiler is one of the most efficient designs available.

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MULTIPLE FIRING RATES - Each boiler is IBR rated and listed at three (3) different firing rates. All three nozzles are included with each unit. This allows for more accurate sizing to the heat loss, yet keeps the cost of the boiler lower. The firing rates range from .90 to 1.50 GPH within two (2) boiler shells. This feature reduces inventory costs with one model covering several firing rates.
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HIGH WATER VOLUME AND STANDARD 5 GALLON DOMESTIC WATER COIL - An amazing 30 gallons of water in the wet section of the boiler, combined with the 5 GPM coil provides the customer with abundant domestic hot water.
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WET BASE -THREE PASS DESIGN - Known in the industry as the most efficient and durable design. Water completely surrounds the combustion chamber, plus two sets of tubes to further transfer heat before venting from the rear of the boiler. The "uni-flow" path of the combustion gases allow for quieter combustion.
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AFUE RATINGS UP TO 85% - Rated among the highest Department of Energy (DOE) ratings.
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FORCED DRAFT BURNER - The forced draft burner eliminates chimney draft problems. The HT-Series is designed to work in spite of poor draft conditions. It also seals products of combustion from the living area, reducing potential "puff-back" problems.
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QUIET OPERATION - Due to the horizontal tube and wet-base, the HT is remarkably quiet. The "Uni-flow" path of combustion gases allows for smoother, quieter combustion than firebox, wet-leg designed boilers.
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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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LIMITED LIFETIME 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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STANDARD FEATURES -
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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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Extended Flange Coil is away from the boiler for easy accessibility. The use of ribbed neck carriage bolts eliminates the problems encountered when a weld stud is broken during service. The large coil plate allows for a greater gasket sealing area.
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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 combustion areas and the open tubes make it easy for the service technician to thoroughly clean the boiler. No tight, pin-type passage ways with "hidden nooks and crannies", making a thorough cleaning possible. A well-maintained boiler continues to perform at higher efficiency and is less likely to develop service problems.

EQUIPMENT

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Advanced three pass design traps more heat during longer, slower passage of combustion gases through the boiler heat exchanger. This design transfers the heat to your home instead of out the chimney.

Note: Circulator not mounted for shipping.

 

STANDARD EQUIPMENT

ASME Code Boiler
5-GPM Tankless Heater
Flush Jacket
Ceramic Fiber Combustion Chamber
Altitude, Temperature & Pressure Gauge
ASME Relief Valve
Build in "Air Scoop"
3450 RPM Flame Retention Oil Burner
Supplied with Nozzles for 3 firing Rates
Cadmium Cell Primary Relay
Triple Aquastat Hydronic Control
007 Circulator or Equivalent
Factory Assembled, Wired & Packaged

OPTIONAL EQUIPMENT

DV Model - Direct Vent

HT I SPECIFICATIONS

MODEL

HT-90

HT-100

HT-110

HT-125

HT-135

HT-150

GPH Input Rate
.90
1.00
1.10
1.25
1.35
1.50
Nozzle w/Pump
140 PSI
.75
.85
.90
1.00
1.10
1.25
Input-BTU-HR
126,000
140,000
154,000
175,000
189,000
210,000
DOE Heating Capacity-  BTU/HR
109,000
121,000
132,000
150,000
161,000
178,000
Net IBR Rating- BTU/HR
95,000
105,000
115,000
130,000
140,000
155,000
DOE AFUE Rating
85.1
84.8
84.2
85.0
84.7
84.0
Steady State Efficiency
86.5
86.2
85.5
85.6
85.4
84.9
Water Content - Gallons
30
30
30
28
28
28
Shipping Weight
460
460
460
490
490
490

 

 

 

HT II SPECIFICATIONS

MODEL

HT-II 165/200

HT-II 225/275

GPH Input Rate
1.65
1.75
2.0
2.25
2.50
2.75
Nozzle w/Pump
140 PSI,
1.50-60oB
1.65-60oB
1.75-60oB
2.0-60oB
2.25-60oB
2.5-60oB
Input-BTU-HR
231,000
245,000
280,000
315,000
350,000
385,000
DOE Heating Capacity-  BTU/HR
200,000
212,000
242,000
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-
-
Net IBR Rating- BTU/HR
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-
-
264,000
291,000
319,000
DOE AFUE Rating
86.0
85.6
84.6
NA
NA
NA
Steady State Efficiency
86.7
86.5
85.4
NA
NA
NA
Water Content - Gallons
48
48
48
46
46
46
Shipping Weight
460
460
460
490
490
490

 

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