Features:

Cast-Iron Headers with Copper Finned Tube Heat Exchanger

Brass Headers and cupro-nickel tube available as options.

AB 1953 compliant, single bank, straight through design delivers lowest pressure drop. Integral fins have ten times the heat transfer surface of plain tubes.

Indoor/Outdoor Certified.

Corrosion Resistant Steel

Fittings are brush galvanized against rust. Heat shields are corrosion-resistant steel. Jacket has Polytuf powder coat finish.

82% Efficiency Cat I Venting.

24-Volt Controls

Totally enclosed for protection. Door easily removed for inspection and service.

Floating Return Header

Immunizes heat exchanger from thermal shock.

Tube Sheet and “O” Ring Construction

Eliminates repair and maintenance problems associated with rolling tubes directly into a casting.

Features:

Outdoor Only

Cast-Iron Headers with Copper Finned Tube Heat Exchanger

Brass headers and cupro-nickel tubes available as options.  AB 1953 compliant, single bank, straight through design delivers lowest pressure drop. Integral fins have ten times the heat transfer surface of plain tubes.

82% Efficiency

Corrosion Resistant Steel

Fittings are brush galvanized against rust. Heat shields are corrosion-resistant steel. Jacket has Polytuf powder coat finish.

24-Volt Controls

Are totally enclosed for protection. Door is easily removed for inspection and service.

Floating Return Header

Immunizes heat exchanger from thermal shock.

Features:

Cast-Iron Headers with Copper Finned Tube Heat Exchanger

Brass headers and cupro-nickel tubes available as options.  AB 1953 compliant, single bank, straight through design delivers lowest pressure drop. Integral fins have ten times the heat transfer surface of plain tubes.

82% Efficiency.  Cat I venting

Indoor Only

Corrosion Resistant Steel

Fittings are brush galvanized against rust. Heat shields are corrosion-resistant steel. Jacket has Polytuf powder coat finish.

Minimum Inlet Water Temperature 105F

24-Volt Controls

Are totally enclosed for protection. Door is easily removed for inspection and service.

Features:

Indoor Only.

Cat I venting.

Cast-Iron Headers with Copper Finned Tube Heat Exchanger

Brass headers and cupro-nickel tubes available as options.  AB 1953 compliant, single-bank, straight-through design delivers lowest pressure drop. Integral fins have ten times the heat transfer surface of plain tubes.

Corrosion-Resistant Steel

Fittings are brush-galvanized against rust. Heat shields are corrosion-resistant steel. Jacket has Polytuf powder coat finish.

24-Volt Controls

Are totally enclosed for protection. Door is easily removed for inspection and service.

Features:

All models indoor/outdoor certified.

Patented burner “security blanket” enhances staged combustion, minimizes installation, start-up issues, and protects burners from metal fatigue.

85% AFUE (84%TE - H3 - HD401)

105ºF minimum inlet water temp.

Copper finned tube heat exchanger with cast-iron headers; Cupro-nickel tubes available, optional brass headers available.

2-Stage operation. Electronic controller without door reset standard on models HD101 - HD301

vSidewall venting ready. No extractor needed for most applications.

Ducted combustion air ready. TruSeal® CSA-Certified direct-vent available.

Certified to SCAQMD Rule 1146.2.

Available for natural gas or propane.

Features:

All models Indoor/Outdoor certified.

84% Efficiency.

CAT I vertical venting, CAT III sidewall venting. No extractor required for sidewall applications up to 70ft on room air.

2-Stage operation.

Patented burner "security blanket" enhances staged combustion, minimizes installation, start-up issues, and protects burners from metal fatigue.

105ºF minimum inlet water temperature.

Cast-iron headers with copper finned tube heat exchanger. Brass headers and cupro-nickel tubes available as options. AB 1953 compliant.

Sidewall venting capable. No extractor needed for most applications.

Ducted combustion air ready. TruSeal® CSA-Certified direct-vent available.

Status display and on-board diagnostic center, English, no codes.

Certified under SCAQMD Rule 1146.2. Meets all Low NOx regulations.

Available for natural gas or propane.

Features:

All models indoor/outdoor certified.

84% Efficiency.

CAT I vertical venting, CAT III sidewall venting. No extractor required for sidewall applications up to 70ft on room air.

Patented burner “security blanket” enhances staged combustion, minimizes installation, start-up issues, and protects burners from metal fatigue.

105ºF minimum inlet water temperature.

Cast-iron headers with copper finned tube heat exchanger standard. Brass headers and cupro-nickel tubes available as options. AB 1953 compliant.

Sidewall venting capable. No extractor needed for most applications.

Ducted combustion air ready. TruSeal® CSA-Certified direct-vent available.

Status display and on-board diagnostic center, English, no codes.

Certified under SCAQMD Rule 1146.2. Meets all Low NOx regulations.

Model 2002BE available for natural gas only. Other models available for natural gas or propane.

Features:

All models Indoor/Outdoor certified.

84% Efficiency. Cat I venting.

2-Stage Operation.

Patented burner "security blanket" enhances staged combustion, minimizes installation/start-up issues, and protects burners from metal fatigue.

105ºF minimum inlet water temperature.

Cast-iron headers with copper finned tube heat exchanger. Brass headers and cupro-nickel tubes available as options. AB 1953 compliant.

Sidewall venting capable. No extractor needed for most applications.

Ducted combustion air ready. TruSeal® CSA-Certified direct-vent available.

Status display and on-board diagnostic center, English, no codes.

Features:

All models Indoor/Outdoor certified.

84% Efficiency. Cat I venting.

Patented burner “security blanket” enhances staged combustion, minimizes installation/start-up issues, and protects burners from metal fatigue.

105ºF minimum inlet water temperature.

Cast-iron headers with copper finned tube heat exchanger standard. Brass headers and cupro-nickel tubes available as options. AB 1953 compliant.

Sidewall venting capable. No extractor needed for most applications.

Ducted combustion air ready. TruSeal® CSA-Certified direct-vent available.

Status display and on-board diagnostic center, English, no codes.

Certified under SCAQMD Rule 1146.2. Meets all Low NOx regulations.

Features:

94% Efficiency Condensing, Cat IV venting required (up to 99% at part/load).

All models indoor/outdoor construction.

Small footprint, less than 9-1/2 square feet.

Top side water connections - allows side by side installation.

All models are equipped with 316L welded stainless steel heat exchanger and copper plumbing. ASME Section IV constructed and stamped. National

Board Registered AB 1953 low lead compliant.

Multiple pump outputs - Boiler Pump, System Pump, Indirect Pump.

Spark ignition with remote flame sensor.

Electronic modulating gas valve and burner, up to 5:1 turndown.

Certified under SCAQMD Rule 1146.2.  Meets all Low NOx regulations.

Supports inlet water temperature down to 50F.

Whisper quiet operation.

CSA Low-Lead certified, less than 0.25% Lead.

Certified to ANSI Z21.13.

Minimum Inlet Water Temperature: 120°F.

Maximum Operable Outlet Water Temperature: 235°F.

Electronic Modulation, up to 7:1 Turndown.

VERSA IC® Control Package with Built-In Outdoor Reset Function and LCD Display,

Including System Sensor, Indirect Sensor & Indirect Supply Sensor.

Status Display Lights.

Cascade Control of up to 4 units, no external sequencer required.

Minimum Inlet Water Temperature: 120°F.

Maximum Operable Outlet Water Temperature: 235°F.

Electronic Modulation, up to 1.7:1 Turndown.

VERSA IC® Control Package with Built-In Outdoor Reset Function and LCD Display, Including

System Sensor, Indirect Sensor & Indirect Supply Sensor.

Status Display Lights.

Cascade control of up to 4 units, no external sequencer required.

Diagnostics Center with History, English, no codes.

Modbus RTU BMS port (RS485).

0-10 VDC BMS Interface (Setpoint or Direct Drive).

All models indoor/outdoor construction.

Features:

85% Thermal Efficiency at Full Rate; Up to 88.4% at Part Load.

Positive vent pressure, Condensing Appliance.  Cat IV Vent Required.

Bronze Headers with Copper Finned-Tube Heat Exchanger standard. Cupro-Nickel tubes available.

ASME Section IV constructed and stamped, National Board registered.

CSA Low-Lead certified, less than 0.25% Lead.

Certified to ANSI Z21.13.

Minimum Inlet Water Temperature: 120°F.

Maximum Operable Outlet Water Temperature: 235°F.

Electronic Modulation, 7:1 Turndown.

VERSA IC® Control Package with Built-In Outdoor Reset Function and 7" touchscreen Display,

Including System Sensor, Indirect Sensor & Indirect Supply Sensor.

Status Display Lights.

7. Vent Pressure Switch

8. Gas Inlet

9. Water Outlet

Features:

96% efficiency at full fire.  Condensing. Cat IV venting required.

Cast-iron headers and pumps with copper finned-tube primary heat exchanger.  Brass headers and cupro-nickel tubes available as options. CSA Low Lead Certified 0.25%

Lead

Minimum continuous inlet water temperature (50°F).

Electronic modulating gas valve and burner, up to 12.5:1 turn down.

On-board diagnostic center, real English, no codes.

All models indoor/outdoor construction.

Complete cabinet protects all controls and wiring.

Certified under BAAQMD rule 7 - Low NOx.

Suitable for altitudes up to 10,000 ft. (derate above 5,000

ft.).

Primary-secondary piping required.