Laars IW Installation And Operation Instructions Manual

4, LAARS HEATING SYSTEMS Page 4 1C. Flow Requirements For proper operation, all low volume hot water heaters must have continuous flow through the heat exchanger when firing. The system pump must be capable of developing sufficient pressure to overcome the resistance of the heater plus the entire ci…

11, Laars IW Mighty Therm Volume Water Heater Page 11 Figure 11. Hot Water Supply System (Model VW & PW). With Vertical Tank With Horizontal Tank NOTES: Heavy line indicates Heater to Tank Circulating Loop. …

7, Mighty Therm Volume Water Heater Page 7 maintain clearances and prevent physical damage and separation of joints. 4. Avoid ending heater vents near air conditioning or air supply fans. The fans can pick up exhaust flue products from the heater and return them inside the building, creating a possibl…

15, Mighty Therm Volume Water Heater Page 15 Figure 17. Two-Temperature Hot Water Supply System with Vertical Tank for Models VW and PW Water Heaters. Legend B - Check Valve C - Check Valve D - Tempering Valve H - Throttling Valves in Building Loop Returns J - Circulating Pump for Return Lo…

2, LAARS HEATING SYSTEMS Page 2 SECTION 1. General Information 1A. Introduction................................................... 3 1B. Heater Identification ..................................... 3 1C. Flow Requirements ...................................... 4 1D. Water Chemistry............…

13, Mighty Therm Volume Water Heater Page 13 Figure 15. Single Installation Piping Diagram, Model IW. Figure 14. Dual Installation Piping Diagram, Model IW. NOTES: 1. All water connections 2" N.P.T. models. 2. Drain valve per ASME requirements. 3. A loop circulator is required to maintain f…