Universal H-Series Low NOx Heater - Natural Gas

Service/Installation: H150FDN H200FDN H250FDN H300FDN H350FDN H400FDN

Page 14
...the combined volume of all equipment in a pit), combustion and ventilation air openings must be natural gas only. 350,000 175 175 400,000 200 200 For more detailed methods of providing air ...1000 800 1000 300,000 1200 1200 350,000 1400 1400 400,000 1600 1600 USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Pomona, CA Clemmons, NC Nashville, TN Tel: 908-351-5400 www....- Sediment Trap Level Flooring or Slab angular air ducts shall not be considered in . When installing a heater below Free Area per 1,000 btu/hr). One opening shall have a minimum free area of 1 square...

Service/Installation: H150FDN H200FDN H250FDN H300FDN H350FDN H400FDN

Page 22
...gas pipe sizing for low pressure natural gas, low pressue propane gas, two-stage natural gas and twostage propane gas systems. Figure 16 : GAS PIPE SIZE Follow local gas codes for proper gas line material selection (copper, iron, plastic, etc.) LOW PRESSURE NATURAL GAS PIPE SIZING: (Based upon an inlet gas pressure of 0.5 psig or less at a pressure drop of 0.5 in-wc) Distance from Gas Meter to Heater Gas... 1-1/4" --- 200 to 10 ft 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Pomona, CA Clemmons, NC Nashville, TN Tel: 908-351-5400 www.haywardpool.com

Service/Installation: H150FDN H200FDN H250FDN H300FDN H350FDN H400FDN

Page 24
... be equal to or Low voltage greater than one appliance is installed underground, the discharge of the gas manifold assembly during service. Natural gas: The gas meter must have an I.D. If the propane gas tank is installed on any other gas appliances if they are on the installation of pipe joints. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Pomona...

Service/Installation: H150FDN H200FDN H250FDN H300FDN H350FDN H400FDN

Page 34
... piping between the gas meter and the heater or for a low-capacity gas meter. gas heaters. NRr"eomppoosveiatriloaontf.itTohhenen.vipaplvlee must be adjusted. 8. If the gas pressure does not meet the above requirements the regulator must be verified by the installer totnheiepnpvslaeulvirseerienmpthrooeve"pdOe. Replace the screw cap over the regulator adjustment screw. 3. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS...

Service/Installation: H150FDN H200FDN H250FDN H300FDN H350FDN H400FDN

Page 35
...the heater. FDN FDP Fuel Natural Propane Manifold 1.8" - 2.0" w.c. 6.8" - 7.0" w.c. Inlet, minimum 4.5" w.c. 9.0" w.c. When the heater is located above or below the 1- Turn "ON" the heater and adjust the thermostat to operate the heater....If the pump and piping arrangement are such that the heater turns back on. WARNING EXPLOSION HAZARD: Gas pressures in excess of the pool or spa, the ...Heater Above Water Level: 1. Never allow the heater to operate with less than the minimum rated water flow rate. pound minimum required to compensate for heat. 4. USE ONLY HAYWARD...

Service/Installation: H150FDN H200FDN H250FDN H300FDN H350FDN H400FDN

Page 45
...various heater controls and service/replacement procedures. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Pomona, CA Clemmons, NC Nashville, TN Tel: 908-351-5400 www.haywardpool.com See Figure 31. Control locations: The following sections give a brief overview of the controls. Gas ...kit. Electrical wiring: ATTENTION: If it must be changed from natural gas to propane or from propane to natural gas, using the appropriate conversion kits available from the factory. 45 Gas conversion: The factory-installed gas train, where appropriate, may be performed by a qualified service agency...

Universal H-Series Low NOx Heater - Natural Gas - Hayward