Indirect Fired Water Heaters Installation and Operating Manual ® Models: SST150-40 CAUTION: The heat transfer medium must be water or other SST250-65 nontoxic ﬂ uid having a toxicity rating or class of 1, as listed in Clinical Toxicology of Commercial Products, SST300-80 5th edition.
Installation & Operating Manual Indirect Fired Water Heaters Installation and Operating Manual...
Installation & Operating Manual Table of Contents 1 General Information 2 Pre-installation 3 Boiler Side Piping 4 Domestic Side (Tank) Piping 5 Wiring 6 Start-up and Check-out 7 Maintenance 8 Performance Data Indirect Fired Water Heaters Installation and Operating Manual...
Installation & Operating Manual Explanation Of Symbols Please Read Before Proceeding Warnings DANGER: Installer – Read all instructions before installing. Warnings in this document are identiﬁ ed by a Perform steps in the order given. Have this warning triangle printed against a grey indirect water heater serviced/inspected by a background.
Installation & Operating Manual When Servicing the Indirect Water Heater - DANGER: HOT WATER CAN SCALD! To avoid severe burns, allow the appliance to cool Water heated to temperatures for clothes before performing maintenance. washing, dish washing, and other sanitizing needs can scald and cause permanent injury.
3 1/4 9 1/4 31 3/4 60 1/4 1268 NOTES: 1. RELIEF VALVE CONNECTION 1. 1” NPT ON SST150-40. 2. HOT WATER OUTLET 22.5° 3. BOILER WATER IN 45° 4. BOILER WATER OUT 5. DRAIN/COLD WATER INLET 1-1/2” NPT (SEE NOTE 1) 2 3/4”...
Water used in the tank must have characteristics falling caused by the failure to properly install a within the following limits: drain pan or in an area with a drain is not the responsibility of the manufacturer or Bosch Characteristic Min. Max.
SST300-80 instead of radiation. As on any circulator zone system check valves should be installed in each zone to prevent SST150-40 unwanted circulation through zones which are not calling for heat. Figure 3-3 illustrates typical circulator zone piping with a ﬂ oor standing G115WS, G125BE, GB125BE, or G215 boiler.
Installation & Operating Manual SEPARATOR WATER ANTI-SCALD MIXING VALVE GB 142 COLD BOILER WATER TANK PRESSURE RELIEF PUMP VALVE SEPARATOR SYSTEM SUPPLY TANK SENSOR SENSOR FROM SYSTEM SYSTEM SYSTEM CHECK VALVE PUMP BALL VALVE (TYPICAL) Y-STRAINER (RECOMMENDED) DRAIN POINT RECIRCULATION EXPANSION PUMP SST series tank...
Installation & Operating Manual ZONE #1 ZONE #1 PRESSURE PRESSURE ZONE #2 ZONE #3 ZONE #4 ZONE #2 ZONE #3 ZONE #4 REDUCING VALVE GAUGE BACKFLOW PREVENTER ZONE PUMPS (TYPICAL) MAKE UP WATER AIR SEPARATOR EXPANSION TANK WATER ANTI-SCALD MIXING VALVE GB 142 COLD BOILER...
Installation & Operating Manual ZONE #1 ZONE #1 PRESSURE PRESSURE ZONE #2 ZONE #3 ZONE #4 ZONE #2 ZONE #3 ZONE #4 REDUCING VALVE GAUGE BACKFLOW PREVENTER ZONE PUMPS (TYPICAL) MAKE UP WATER AIR SEPARATOR EXPANSION TANK WATER BALL VALVE ANTI-SCALD TANK MIXING VALVE...
Installation & Operating Manual SEPARATOR WATER GB 142 ANTI-SCALD MIXING VALVE BOILER COLD WATER TANK RECIRCULATION PUMP PUMP SEPARATOR CHECK VALVE SYSTEM SUPPLY PRESSURE SENSOR RELIEF VALVE FROM SYSTEM (TYPICAL) SYSTEM SYSTEM BALL VALVE PUMP TANK SENSOR (TYPICAL) Y-STRAINER (TYPICAL) (RECOMMENDED) DRAIN POINT...
Installation & Operating Manual 4 Domestic Side (Tank) Piping Basic Domestic Piping Domestic Water Piping for Distant Fixtures Figure 4-2 shows typical domestic water piping for a tank. In some cases the furthest ﬁ xture may be quite distant The function of the components shown are as follows: from the tank.
Installation & Operating Manual Anti-scald Valves (Mixing Valves) Temperature & Pressure (T&P) Relief Valve Anti-scald valves used with water heaters are also called tempering valves or mixing valves. An anti-scald valve mixes cold water in with the outgoing hot water to assure WARNING: that hot water reaching a building ﬁ...
T&P relief valve discharge piping must be: - made of material serviceable for a temperature of - SST150-40 - 3/4” NPT with a minimum AGA Rating of 250°F or greater. 105,000 Btu/hr.
Installation & Operating Manual SHOCK ARRESTOR UNION SHUTOFF VALVE (TYPICAL) SHUTOFF ANTI-SCALD SHUTOFF VALVE VALVE MIXING VALVE FROM BOILER SHUTOFF TO BOILER VALVE BACKFLOW PREVENTER EXPANSION TANK TANK SENSOR / AQUASTAT CHECK VALVE RECIRCULATION PUMP SST SERIES TANK DRAIN ( FIELD SUPPLY) Figure 4-2 Recommended domestic water piping NOTICE: Please note that these illustrations are...
Installation & Operating Manual 5 Wiring Wiring using boiler sensor: 1. For wiring using boiler sensor, see boiler installation manual. Indirect Water Heater Controlled Using Aquastat and Zone Circulator / Valve: 1. Install Aquastat to tank. Aquastat control (Honeywell L4006 or equivalent) can be ordered from your local distributor.
Installation & Operating Manual 6 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.
Installation & Operating Manual 7 Maintenance DANGER: Plugging the temperature and pressure (T&P) relief valve or discharge piping can The SST series indirect water heater system requires cause excessive pressure in the water annual inspection and maintenance to ensure a reliable heater, resulting in severe personal injury, supply of hot water: death, or substantial property damage.
Installation & Operating Manual If antifreeze is used in the boiler water, check concentration. Boiler water (including additives) must be practically non-toxic, having a toxicity rating or class of 1, as listed in the “Clinical Toxicology of Commercial Products”. A maximum 50/50 mixture of inhibited propylene glycol is recommended.
Heat Loss Rating Rating Rate from Source Friction Gal. Volume F/hr Gal/hr Gal/hr Heat Source Flow Rate Loss Feet Gal. Btu/hr SST150-40 40.0 115,000 14.0 SST250-65 67.0 154,000 14.0 SST300-80 81.5 171,000 14.0 SST450-119 113.4 199,000 14.0 • These ratings were obtained with a heat source output and heat source ﬂ...
Installation & Operating Manual How to Properly Size Your Indirect Water Heater Use the First Hour Rating (FHR) to properly size your Indirect Water Heater. The First Hour Rating is the amount of hot water in gallons the heater can supply per hour (starting with a tank full of hot water), depending on tank capacity, source of heat, and the size of the burner.