I&O Manual - Solaris Water Heaters - Categories On Thermal ...

E. Water Piping1. Refer to Figure 12 for typical water piping installationdetails for modular water heaters.2. Installing a low water cutoff in the system is highlyrecomended and may be required by code.3. Refer to Table 2 for pressure drop and flow requirementsfor each water heater.4. Refer to the instructions, cautions, notices, andwarnings in the water piping and trim sections ofthis manual.F. Gas Piping1. Refer to National Fuel Gas Code, Local Codes andTables 5 and 6 for gas pipe sizing.2. Each water heater must be piped as shown in Figure14.3. Refer to the instructions, catuions, notices, andwarnings in Section V.G. ElectricalWARNINGIf gas pressure in the building is above 1/2psig, an additional gas pressure regulator isrequired. Using one additional regulator formultiple water heaters may result in unsafewater heater operation. The additional regulatormust be able to properly regulate gaspressure at the input of the smallest waterheater. If the regulator cannot do this, twoor more additional regulators are required.Consult regulator manufacturer and/or localgas supplier for instructions and equipmentratings.1. Each water heater must be provided with a fuseddisconnect and service switch.2. Install wiring in accordance with requirements ofauthority having jurisdiction. In the absence of suchrequirements, follow the National Electric Code,NFPA 70 and/or CSA C22.1 Electric Code.3. Refer to Figure 1 for electrical data for each waterheater size.4. Refer to the instructions, cautions, notices, andwarnings found in Section VI.31