Hayward H150FDN All models English - Page 14

SECTION 3. INSTALLATION All gas installations: The H-Series heater is to be installed with a gas connection located on the left side (or right side, if necessary). Insert the pipe to the gas valve through the star-slit black plastic cap in the cabinet side. It is recommended that a ground-joint union be installed inside (or outside if space does not allow) the heater cabinet to facilitate servicing the burner assembly tray. See Figure 21. An A.G.A Certified main gas valve shutoff must be installed outside of cabinet and within 6 feet of the heater. Gas shutoff valve must have an l.D. large enough to supply the proper amount of gas volume to the heater. ! NOTE: Apply joint compounds (pipe dope) sparingly and only to the male threads of pipe joints. Do not apply joint compound to the first two threads. Use joint compounds resistant to the action of liquefied petroleum gas. Do not over tighten the gas inlet pipe or damage may result. See Figure 21. To prevent dirt and moisture from entering gas valve, a sediment trap should be installed in the gas line close to the valve. See Figure 21. GAS SUPPLY MANUAL SHUT OFF VALVE 6' MAX. UNION GAS VALVE SUBJECT TO LOCAL CODES 3" TYPICAL SEDIMENT TRAP HEATER CABINET Figure 21: Sediment Trap Do not use flexible appliance connectors on any gas connections unless the connector is A.G.A. approved for outdoor installation, is marked with the BTUH capacity (which must be equal to or greater than the heater rated input), and the type of gas (Natural or LP) to be used. Reduction of the gas supply pipe or tubing to the inlet of the heater gas valve must be made at the valve only and must match the valve inlet size (3/4"). If more than one appliance is installed on the gas line, consult the local gas company for the proper gas line size. Any questions concerning the installation of the proper gas line size can be directed to Hayward Technical Service. Telephone numbers can be found in Troubleshooting Guide Section. NATURAL GAS The gas meter must have the capacity to supply enough gas to the pool heater and any other gas appliances if they are on the same pipe-line (Example: 225 meter = 225,000 BTUH). If doubt exists as to the meter size, consult local gas utility for assistance. Hayward will not be responsible for heaters that soot up due to improper meter and gas line sizing resulting in improper gas volume. PROPANE GAS All propane gas tanks must be located outdoors and away from pool/spa structure and in accordance with the standard for storage and handling of propane gas ANSI/NFPA 58 (latest edition) and applicable local codes. If propane gas tank is installed underground, the discharge of the regulator vent must be above the highest probable water level. Propane tanks must be sufficient capacity to provide adequate vaporization for the full capacity of the equipment at the lowest expected temperatures. Consult a propane company expert for correct sizing. ! NOTE: Whenever a high pressure double regulation sys- tem is utilized for propane gas, consult a propane professional for accurate pipe and pressure sizing. Make sure that 1st and 2nd stage regulators are large enough to handle the BTUH input listed for the heater(s) being used. Hayward will not be responsible for heaters that soot up due to improper gas line or Propane tank sizing resulting in improper gas volume. Water piping: The H-Series heater is designed for use with pool and spa/ hot tub water only, as furnished by municipal water distribution systems and purified by an automatic chlorinator or salt chlorine generator. The warranty does not cover heater use with mineral water, sea water, salt or other non-potable waters. Do not install any restriction in the water pipe between heater outlet and pool/spa with the exception of a three-way switching valve and an in-line chlorinator and associated check valve. Blockage of water flow from heater return to pool may result in fire or explosion causing property damage, personal injury or loss of life. FRONT HEADER OUTLET - TOWARDS BACK OF HEATER TURN CLOCKWISE TO TIGHTEN. HAND TIGHTEN ONLY. O-RINGS INLET - TOWARDS FRONT OF HEATER FLANGE PIPE NIPPLES UNION NUTS Figure 22: Pipe Nipple Installation 12