Noritz N-0931M-DV Installation Manual

17, Noritz N-0931M-DV 17 If this water heater will be installed in an application where the supply water is hard, the water must be treated with either a water softener, which removes the hardness, or by using sequestering agents, such as the Noritz Scale Shield, that reduce the amount of scale deposits. Refer t…

18, 18 11. Plumbing Applications Recirculation System Combination Potable Water and Space Heating System Cold Water Supply Isolation Kit(*4) Gas Supply Aquastat(*3) Pump Control Signal(*2) Relay for Pump (if larger than 85 Watts) Hot Water Optional 8-10 Gallon Storage Tank (To alleviate cold wat…

7, 7 6. Installation Clearances Before installing, check for the following: Install in accordance with relevant building and mechanical codes, as well as any local, state or national regulations, or in the absence of local and state codes, to the National Fuel Gas Code ANSI Z223.1/NFPA 5…

10, 10 Model Wall thickness (in.) VT4-TL-5 3.5" to 5.1" VT4-TL-8 5.1" to 8.3" VT4-TL-14 8.3" to 14.6" VT4-TL-27 14.6" to 27.2" Main unit Straight pipe Use a listed Category III vent adapter to connect the flue collar to the vent system. Use Catego…

9, 9 IllustrationCheck 4. Drill holes for the remaining four screws. 5. Hang the unit again by the first screw, and then insert and tighten the remaining four screws. 6. Take waterproofing measures so that water does not enter the building from screws mounting the device. • Make sure the uni…

21, 21 Remote controller cord • For extensions, a 26' cord can be purchased (Part # RC-CORD26) or use 18AWG wire. • Install according to the National Electrical Code and all applicable local codes. Connecting Remote Controller Cord to Unit • Keep the remote controller cord aw…