📘 Lochinvar manuals • Free online PDFs
Lochinvar logo

Lochinvar Manuals & User Guides

Lochinvar is a leading manufacturer of high-efficiency commercial and residential water heaters, boilers, pool heaters, and storage tanks.

Tip: include the full model number printed on your Lochinvar label for the best match.

About Lochinvar manuals on Manuals.plus

Lochinvar is a recognized leader in the water heating industry, delivering innovative and high-efficiency products for both residential and commercial sectors. The company specializes in manufacturing advanced boilers, water heaters, pool heaters, and storage tanks designed to deliver superior performance and energy savings.

With a commitment to quality and engineering excellence, Lochinvar supports its customers with robust parts availability and technical expertise. Their extensive product line includes the popular Armor, Crest, and Knight series, ensuring a solution for every heating need. Whether for a home renovation or a large-scale commercial project, Lochinvar provides dependable hot water solutions.

Lochinvar manuals

Latest manuals from manuals+ curated for this brand.

Lochinvar TM-1 Series Tankless Water Heater User Manual

February 12, 2026
Lochinvar TM-1 Series Tankless Water Heater Specifications Product Type: Standard Condensing Residential Gas Water Heater Models: TM-160M-N, TM-180M-N, TM-199M-N, TM-160X3-N, TM-180X3-N, TM-199X3-N Fuel Type: Natural Gas Availability: M Models available…

Lochinvar 152-402 Residential Pool Heaters Installation Guide

November 13, 2025
ERP-RP-21_100161008_2000003724 Replacement Parts List PARTS & SERVICE DEPARTMENT Nashville, Tennessee 877-554-5544 • Fax: 615-882-2918 parts_team@lochinvar.com www.Lochinvar.com Residential Pool Heaters ER(N, L) 152-402 PRIOR TO SERIAL NUMBER 240613761088 SEALED INTEGRATED CONTROL…

Lochinvar FTXL Fire Tube Boiler Installation & Operation Manual

Installation & Operation Manual
Comprehensive guide for installing and operating Lochinvar FTXL High-Efficiency Fire Tube Boilers (Models 400, 500, 600, 725, 850). Covers safety, installation procedures, venting, hydronic piping, gas connections, startup, and operation.

Knight XL Commercial Boiler Installation & Operation Manual

Installation & Operation Manual
Comprehensive installation and operation manual for the Lochinvar Knight XL commercial boiler, covering models 400 through 1000. Includes detailed instructions, safety warnings, product specifications, and maintenance guidelines.

Knight XL Commercial Boiler Installation & Operation Manual

Installation & Operation Manual
Comprehensive installation and operation manual for the Lochinvar Knight XL Commercial Boiler, covering models 400-500 and 650-1000. Provides detailed instructions for setup, venting, piping, gas connections, wiring, and maintenance.

Lochinvar manuals from online retailers

Lochinvar support FAQ

Common questions about manuals, registration, and support for this brand.

  • How often should I service my Lochinvar boiler or water heater?

    Lochinvar recommends having your appliance serviced and inspected by a qualified service technician at least annually to ensure safe operation and optimal performance.

  • Where can I find the model and serial number?

    The model and serial number are located on the appliance rating plate. This information is required when calling for support or ordering parts.

  • Who should I contact for replacement parts?

    For replacement parts, you can contact the Lochinvar Parts and Service Department at 877-554-5544 or email parts_team@lochinvar.com.

  • What should I do if I smell gas near my water heater?

    Do not try to light any appliance or touch electrical switches. Immediately call your gas supplier from a neighbor's phone. If you cannot reach them, call the fire department.