LAARS® OmniTherm®
8Pages

Near Condensing Boiler and Volume Water Heater Up to 7:1 Turndown Ratio Electronic Fuel-to-Air Ratio Control Up to 90% Thermal Efficiency Stainless Steel Heat Exchanger Indoor/Outdoor Rated Laars Linc® Intuitive Touch Screen Controls Low Return Water Temperatures Allowed

Omni Therm THE LAARS OMNITHERM ADVANTAGE: Designed with Performance and Practicality in Mind OmniTherm, the new measure for installation flexibility, stands in a performance class of it’s own. It can as easily be applied in replacement applications as it can be in new installations. 1) Long Life, Stainless Steel Heat Exchanger: • Protects against heat exchanger corrosion and fouling • High efficiency levels • Allows for low temperature return water 2) Available for use with Category I, II, III or IV Venting Applications 3) Category I or III Low Temperature Operation • Unique heat exchanger...

Laars OmniTherm Boilers and Volume Water Heaters include advanced features that bring tangible results to building owners. At the heart of the OmniTherm is a patent pending stainless steel corrosion resistant heat exchanger, industry leading Electronic Air-to-Fuel ratio combustion control and the advanced Laars Linc control platform. All of this has been combined for the first time in a near condensing heating platform intended for use in Category I, II, III or IV applications. INDUSTRY LEADING TECHNOLOGY Electronic Air-to-Fuel Ratio Control Brings Performance to a Whole New Level The...

LAARS LINC® LAARS LINC CONTROLS ARE A STEP BEYOND SMART, THEY’RE INTUITIVE Powerful control logic is easily managed via icon driven, touch screen technology. The result is an intuitive to use control system with the intelligence to manage installations from the simple to the complex. ADVANCED EASE OF USE FUNCTIONALITY: • HOME SCREEN BOILER STATUS: The home screen shows the operational status of the boiler; all set points, status of each pump, and boiler run status. • QUICK START CONFIGURATOR: Simply touch the “Quick Start” icon on the home screen to access the most commonly-used parameters...

DIMENSIONAL DATA Vent Collar Condensate Trap Water Outlet NOTE: The unique design of this appliance requires connection to a condensate drain, including the Category I / III model. Water Inlet & Outlet Water Inlet VENTING DATA General Air System Data Air Collar Size Maximum Model “E” and Ducted Ducted Air Pipe 1 Air Pipe Size Length¹ Category II and IV Vent Data Vent Collar Size Category IV Vent Pipe Size4 Category I and III Vent Data 3,4 Maximum Typical Category IV Category II 4 Vent Pipe Length Vent Pipe Size Vent Collar Category III Size Vent Pipe Size4 inches cm 12 Maximum Typical3...

OmniTherm Models OCH and OCV for Category II & IV Venting BOILER SIZING DATA VOLUME WATER HEATER SIZING DATA OmniTherm Hydronic Model OCH (Category II & IV Vent) Model Output Rate OmniTherm Volume Water Heater Model OCV (Category II & IV Vent) Turndown Ratio % Thermal % Combustion Input Rate Output Rate Turndown Ratio BOILER WATER FLOW REQUIREMENTS Temperature Rise 20°F (11°C) *Headloss is for boiler only (no piping) VOLUME WATER HEATER WATER FLOW REQUIREMENTS 1-10 Grains Per Gallon Hardness Flow Rate 11-15 Grains Per Gallon Hardness Temp Rise Flow Rate Temp Rise *Headloss is for the heater...

OmniTherm Models ONH and ONV for Category I & III Venting VOLUME WATER HEATER SIZING DATA BOILER SIZING DATA OmniTherm Hydronic Model ONH (Category I & III Vent)* Model Output Rate OmniTherm Volume Water Heating Model ONV (Category I & III Vent)* Input Rate Output Rate * Category I & III venting achievable due to the on/off firing configuration of models ONH and ONV BOILER WATER FLOW REQUIREMENTS Temperature Rise Model *Headloss is for boiler only (no piping) VOLUME WATER HEATER WATER FLOW REQUIREMENTS 1-10 Grains Per Gallon Hardness Model Flow Rate 11-15 Grains Per Gallon Hardness Temp...

Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 9 Brigden Gate, Halton Hills, Ontario, Canada, L7G 0A3 • 905.203.0600 • Fax 905.636.0666 www.LAARS.com Litho in U.S.A. © Laars® Heating Systems Co. 20-10 Docum