SSS-I&O Rev D Installation & Operation Manual Models: SSS031, SSS041, SSS051, SSS081, & SSS119 WARNING This manual must only be used by a qualified heating installer / service technician. Read all instructions before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage. Save this manual for future reference.
Installation & Operation Manual Contents Hazard definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Please read before proceeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Piping . .
Installation & Operation Manual Please read before proceeding WARNING NOTICE Installer – Read all instructions before installing. Perform steps in the order given. Have this indirect water heater serviced/inspected by a qualified service technician, at least annually. Failure to comply with the above could result in severe personal injury, death or substantial property damage.
Installation & Operation Manual 1 General Information The Lochinvar SSS series indirect water heater (FIG. 1-1) is designed to generate domestic hot water in conjunction with a hot water boiler using forced boiler water circulation. This indirect water heater consists of a 444 Stainless Steel tank in which a smooth 304 stainless steel coil is located. Boiler water is pumped through the coil and heats the water in the tank.
Installation & Operation Manual 2 1. Pre-installation The installation must conform with the instructions in this manual and all applicable local, state, provincial, and national codes, laws, regulations, and ordinances. Installations in Canada must conform to B149.1 or B149.2 Installation Codes. 2. 1. Figure 1-1 on page 4 shows the weights of all the tanks filled with water. Make sure that the location chosen for the tank is capable of supporting it.
Installation & Operation Manual 3 Piping Boiler Side Piping DHW Prioritization Figures 3-1 thru 3-3 show typical boiler side piping for several common situations. Regardless of which system is used it is imperative that the flow rates called for in Table 3A on page 6 are developed through the coil. This requires properly sized piping and a properly sized pump. This piping system is designed to provide direct hot water priority over the other zones in the heating system.
Installation & Operation Manual 3 Piping (continued) Figure 3-1 Piping Diagram Zoned with Circulators ZONE #1 PRESSURE REDUCING VALVE PRESSURE GAUGE ZONE #2 ZONE #3 ZONE #4 BACKFLOW PREVENTER ZONE CIRCULATORS (TYPICAL) MAKE UP WATER SYSTEM SUPPLY SENSOR (WHEN USED) AIR SEPARATOR EXPANSION TANK NOT TO EXCEED 4 PIPE DIA.
Installation & Operation Manual 3 Piping Figure 3-2 Piping Diagram Zoned with Valves ZONE #1 PRESSURE REDUCING VALVE PRESSURE GAUGE ZONE #2 ZONE #3 BACKFLOW PREVENTER ZONE #4 ZONE VALVES (TYPICAL) SYSTEM SUPPLY SENSOR (WHEN USED) MAKE UP WATER AIR SEPARATOR DIFFERENTIAL PRESSURE BYPASS VALVE (IF USED) SYSTEM CIRCULATOR EXPANSION TANK NOT TO EXCEED 4 PIPE DIA.
Installation & Operation Manual 3 Piping (continued) Figure 3-3 Knight Boiler Primary / Secondary Piping PRESSURE REDUCING VALVE BACKFLOW PREVENTER PRESSURE GAUGE MAKE UP WATER AIR SEPARATOR SYSTEM SUPPLY SENSOR TO SYSTEM BALL VALVE (TYPICAL) NOT TO EXCEED 4 PIPE DIA.
Installation & Operation Manual 3 Piping Domestic Side Piping Basic Domestic Piping Figure 3-5 on page 12 shows typical domestic water piping for a tank. All components except the control are provided by the installer. The function of the components shown are as follows: a. Shut-off valves (recommended) - Use to isolate the tank for servicing. b. Backflow Preventer (required by some codes) - Use to prevent water from backing out of the tank in the event that inlet water pressure drops. c.
Installation & Operation Manual 3 Piping (continued) Domestic Water Piping for Distant Fixtures NOTICE In some cases the furthest fixture may be quite distant from the tank. In such an installation the configuration shown in FIG. 3-5 would result in an unacceptable delay before hot water reaches these distant fixtures. Even if all the fixtures are relatively close to the tank, the building owner may want hot water at all fixtures as soon as they are opened.
Installation & Operation Manual 3 Piping Figure 3-5 Recommended Domestic Water Piping 12
Installation & Operation Manual 4 Wiring Indirect Water Heater Sensor Setup (Knight Boiler) CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. 4. Adjust the tank set point program as follows: 1. Install the sensor inside the tank as depicted in FIG. 4-1. a. 2. Connect the wire leads to the DHW Tank Sensor (AUX) connection point on the Knight boiler connection board (see FIG. 4-1).
Installation & Operation Manual 4 Wiring IDW Controlled Using Aquastat and Zone Circulator / Valve 1. Install Aquastat to tank. Aquastat control (TST1085) can be ordered from your local Lochinvar distributor. 2. Connect Aquastat to the zone controller for the Indirect Water Heater Zone. 3. Adjust Aquastat to the desired temperature.
Installation & Operation Manual 5 Start-up and Check-out 1. Make sure the system is free of leaks and that air is purged from the system. CAUTION Fix any leaks found before proceeding further. Leakage from the boiler piping can result in severe damage to the boiler. 2. Many soldering fluxes contain Zinc Chloride which can cause severe corrosion damage to stainless steel. After completing all domestic water connections, flush the indirect water heater thoroughly before leaving the installation.
LIMITED LIFETIME INDIRECT WATER HEATER WARRANTY WHAT DOES THIS LIMITED WARRANTY COVER? WHAT IS THE PERIOD OF COVERAGE? This limited lifetime warranty covers the stainless steel tank, stainless steel heat exchanger coil and component parts for leakage or other malfunction caused by defects in materials and/or workmanship. It extends to the first buyer and to any subsequent owner(s) as long as the water heater remains installed at its original place of installation.
LIMITED LIFETIME INDIRECT WATER HEATER WARRANTY (CONTINUED) WHAT WILL WE DO TO CORRECT PROBLEM? If a defect occurs within the warranty period, we will: 1. Provide a comparable replacement water heater of our manufacture, (or at our option repair) any unit which develops a leak in the stainless steel tank or heat exchanger coil within the warranty period. To obtain a replacement, you must have the rating plate from the defective unit.. 2.
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Revision Notes: Revision B (SSS-I&O-Rev B) reflects edits and additions made to the piping diagrams. Revision C (SSS-I&O-Rev C) reflects edits made to the piping diagrams, the DHW Tank Sensor (AUX) and the addition of the warranty. Revision D (ECO #C02870) reflects the addition of the scald chart on page 3. SSS-I&O Rev D 1/09 - Printed in U.S.A.
