LAARS Manuals & User Guides

Laars RTGR199, LT199NR1 Air Handler Application Installation Guide

December 1, 2025

Laars RTGR199, LT199NR1 Air Handler Application Product Information The Air Handler Installation Manual provides guidance on installing RTGR, RTGS, and LT199 series tankless water heaters with air handler systems. Proper…

LAARS FTHW Wall Mounted Gas Condensing Heating User Manual

April 29, 2025

LAARS FTHW Wall Mounted Gas Condensing Heating Specifications Model: FTHW Heating Capacity: 100,000 BTU/hr, 140,000 BTU/hr, 199,000 BTU/hr Type: Wall-Mounted, Modulating Gas, Condensing, Heating Only Boiler Product Usage Instructions Familiarizing…

Laars LT Series Wall Mounted Gas Condensing Water Heater Installation Guide

April 13, 2025

Laars LT Series Wall Mounted Gas Condensing Water Heater Installation Instructions Ensure the water heater is mounted securely on a suitable wall surface. Connect the necessary exhaust vent ducts and…

LAARS 1000 Pennant Hydronic Boiler Owner’s Manual

March 26, 2025

1000 Pennant Hydronic Boiler Specifications Product: Commercial Gas and Indirect Products Selection Guide: 5:1 or FT HTD Indoor/Outdoor: Yes Boiler Sizes (MBH): 1000, 1500, 1600, 2000, 2500, 399, 500, 650…

LAARS LT Series Wall Mounted Modulating Gas Condensing Water Heater Instruction Manual

December 30, 2024

Installation and Operation Instructions Document 2192A LT Series Wall-Mounted, Modulating Gas Condensing Water Heater with Recirculation pump Model LT199NRX1 / LT199PRX1 (199,000 BTU/hr)• Natural Gas (NG) - Factory Configuration •…

LAARS JX050NXXU1 Residential Gas Fired Hydronic Boilers Instruction Manual

October 10, 2024

JX050NXXU1 Residential Gas Fired Hydronic Boilers Specifications: Product: JX Residential Gas-Fired Hydronic Boilers Sizes Available: 50-200 MBTU/h Manufacturer: LAARS Heating Systems Product Usage Instructions: Installation: 1. This product must be…

LAARS PH Mighty Therm User Manual

June 3, 2024

LAARS PH Mighty Therm User Manual FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler installation and maintenance. Improper…

LAARS 399 Water Heater Instructions

March 1, 2024

NEOTHERM® XTR Water Heater NT2V Indoor Models 399, 500, 650, 800, 999, 1500 Date:                                 …

LAARS FT Series Floor Standing Modulating Gas Condensing Combine Boiler Instruction Manual

November 28, 2023

Installation and Operation Instructions Document 1505A FT Series Floor Standing Modulating Gas Condensing Combine Boiler FT SERIES Floor Standing, Modulating Gas, Condensing, Combination BoilerModel FTCF199N 199,000 BTU/h • Natural Gas…

LAARS JX-50 42000 BTU Output Mini-Therm Gas-Fired Hydronic Boiler Instructions

June 3, 2023

JX-50 42000 BTU Output Mini-Therm Gas-Fired Hydronic Boiler Product Information This product is a small-sized device that provides big performance, efficiency, and value. It is designed for residential use and…

Laars FT Series FTHF199N Gas Boiler Installation and Operation Manual

Installation and Operation Manual

Comprehensive installation, operation, and maintenance manual for the Laars FT Series FTHF199N Floor Standing, Modulating Gas, Condensing, Heating Only Boiler. Covers safety, installation procedures, specifications, troubleshooting, and parts.

Laars FT Series FTHW301/FTHW399 Gas Boiler Installation and Operation Manual

Installation and Operation Manual

This comprehensive manual provides detailed instructions for the installation, operation, and maintenance of the Laars FT Series FTHW301 and FTHW399 wall-mounted modulating condensing gas boilers. It covers safety precautions, technical…

Laars SS Jacketed Tanks: Commercial Storage Water Heater Specifications

Datasheet

Detailed specifications and features for Laars SS Jacketed Tanks, commercial storage water heaters. Includes model numbers LSSJST80C5 and LSSJST115C5, dimensions, capacity, and warranty information.

Laars MagnaTherm Installation and Operation Instructions

Installation and Operation Instructions

Comprehensive installation, operation, and maintenance manual for Laars MagnaTherm modulating boilers (MGH Series) and water heaters (MGV Series), covering models from 1600 to 4000 MBTU/h.

Laars FT Series Boiler Integration with Honeywell Home Smart Thermostat

installation guide

Guide for integrating Honeywell Home Smart Thermostats with Laars FT Series Boilers, covering wiring, setup, and specific model considerations for optimal home heating control.

Laars Pennant PNCH/PNCV Hydronic Boiler & Water Heater User's Manual

User's Manual

User's manual for Laars Pennant PNCH (Hydronic Boiler) and PNCV (Water Heater) models 500-2000. Covers installation, operation, maintenance, electrical connections, and burner setup.

LAARS LT Series LT199NXX1/LT199PXX1 Gas Condensing Water Heater Installation and Operation Instructions

Installation and Operation Instructions

Comprehensive installation and operation guide for the LAARS LT Series LT199NXX1 and LT199PXX1 wall-mounted modulating gas condensing water heaters, including detailed part lists and visual component breakdowns.

LAARS MINI-THERM JX Residential Gas-Fired Hydronic Boiler User Manual

User's Manual

Comprehensive user manual for the LAARS MINI-THERM JX series residential gas-fired hydronic boilers, covering installation, startup, shutdown, safety, and maintenance. Includes model sizes 50-200 MBTU/h.

LAARS High Efficiency Commercial Gas Water Heater Parts List

Parts List

Comprehensive replacement parts list for LAARS High Efficiency Commercial Gas Water Heaters, including models LUHE60T and LUHE100T. Find part numbers and descriptions for various components.

Laars Mighty Therm2 Installation and Operation Instructions

Installation Guide

Comprehensive guide for the installation, operation, and maintenance of Laars Mighty Therm2 commercial hydronic boilers and volume water heaters. Covers safety, model identification, venting, combustion air, water and electrical connections,…

FT Series Combination Boiler User Manual

user manual

User's manual for the FT Series Wall-Mounted, Modulating Gas, Condensing, Combination Boiler, covering operation, maintenance, and safety guidelines.

Cascading the FT Series Heating Only Boilers: Installation and Operation Guide

Installation Guide

Comprehensive guide on cascading FT Series Heating Only Boilers, covering installation, wiring, and operational procedures for both floor-standing and wall-mounted models. Learn about system configuration, control displays, and troubleshooting.