Assessments - 3, GPA: 4.3 ( )

Fabricante : STA-RITE Arquivo Tamanho: 1.73 mb Arquivo Nome : Língua de Ensino:

FIGURE 13: U.S. minimum Exhaust Vent clearances. Local codes may differ - consult local code officials. 1' Min. 4' Min.4' Min. 4' Min. 4' Min. 3' Minimum clearance if Vent Termination Termination Gas Meter Metal Vent Body 8. Fire Hazard. Do not run the heater vent . Table 6: Maximum Vent Length 4” Special Gas Vent (Vertical or Horizontal)* No. of 90° Elbows Maximum Length in Feet (M) 0 25 Ft. (7.6M) 1 20 Ft. (6.1M) 2 15 Ft. (4.6M) 3 10 Ft. (3.1M) * Minimum vent length is one foot (.34M), or in accordance with vent manufacturer’s instructions, and local and national codes. Horizontal vents 3’ (1M) or less in length do not require a condensate tee, but must slope down toward the outlet at 1/4” to the foot (2cm/M) to allow condensate to drain. 3" (7.6 cm) Min., 12" (30.5 cm)Max. Clearance Condensate drain w/Trap Condensate Tee Support weight of pipe Listed Terminal Metal Special Gas Vent requires Appliance Adapter Slope at least 1/4" per foot (2 cm per Meter) down towards condensate drain FIGURE 14: Typical Special Gas Vent Pipe Installation (Horizontal-Positive Pressure) Table 7: Listed Thimbles and Vent Terminals (for Special Gas Vents) Vent Brand Wall Thimble Horizontal Terminal Vertical Terminal Saf-T Vent® (Part of Vent term.) 5490CI Horizontal Term. 5400 Cap Saf-T CI Vent® (Part of Vent term.) 5490CI Horizontal Term. 5400 Cap Z-Vent 2SVSWTF04 2SVSTTF04 Tee 2SVSRCF04 Cap 15 A manual bypass valve should be installed across the heater when the pump flow exceeds 120 GPM (454 LPM). See instructions below for setting of the manual bypass. Make sure that the outlet plumbing from the heater contains no shut-off valves or other flow restrictions that could prevent flow through the heater (except as noted below). To switch flow between the pool and spa, use a diverter valve. Do not use any valve that can shut off the flow. Do not use a shut-off valve to isolate the heater unless it is below the level of the pool or spa. Install a check valve to prevent back-siphoning through the heater when the pump is off. NOTICE: Improper operation of chemical feeders can cause severe damage to the heater which is not covered by the warranty. Install the chemical feeder downstream of the heater (see “Water Chemistry,” Page 17). Install a chemical resistant one-way check valve between the heater and the chemical feeder. NOTICE: If you install a chemical feeder and check valve, you must install a relief valve on the heater. See “Pressure Relief Valve”, Page 18 and 19. NOTICE: If the heater is plumbed in backwards, it will cycle continuously. Make sure piping from filter is not reversed when installing heater. WATER PIPING Connect the heater directly to 2” PVC pipe, using the integral unions provided. Heat sinks are not required. The low thermal mass of the heater will prevent overheating of the piping connected to the pump even if the heater shuts down unexpectedly. 16 Cool Water In From Spa 2735 1296 From Filter Outlet to Heater Inlet Warm Water Out to Pool or Spa Sanitizer Corrosion Resistant, Positive Seal Check Valve To Filter Inlet Cool Water In From Pool To Spa To Pool SYSTEM 3™ Modular Media Filter FIGURE 15: Typical installation Pool Main Drain Spa From Pool 3-Way Valve 3-Way Valve 3-Way Valve Chlorinator Heater Filter Pump FIGURE 16: Typical pool piping layout 17 WATER FLOW RATE Maximum and minimum water flow rates required by the heater are listed below: If the water flow rate to the heater is above 120 GPM (454 LPM), it must be reduced by installing a manual bypass valve (Figure 17). After installing the valve, adjust the valve to bring the flow rate within the acceptable range. Then remove the valve handle or lock it in place to prevent tampering. Occasionally a two-speed pump will not develop enough pressure on the low speed to operate the heater. In this case, run the pump at high speed only to operate the heater. If this does not solve the problem, do not try to run the heater. Instead, correct the installation. Do not operate the heater while an automatic pool cleaner is also operating. If the circulation pump suction is plugged (for example by leaves), there may not be adequate flow to the heater. Do not rely on the pressure switch in this case. WATER CHEMISTRY Water chemistry should follow good swimming pool water chemistry practices. See Table 9 (below) for water chemistry parameters. When using a chlorinator, install it downstream from the heater and at a lower level than the heater outlet. Install a corrosion resistant positive seal check valve (see Figure 15) between the heater and the chlorinator to prevent concentrated chemicals from back-siphoning into the heater. Back-siphoning is most likely to occur when the pump stops, creating a pressure-suction differential. Do NOT sanitize the pool by putting chlorine tablets or sticks into the skimmer(s). When the pump is off, this will cause a high concentration of chlorine to enter the heater, which could cause corrosion damage to the heat exchanger. Model Minimu...

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