Maintenance | 26 |
MAINTENANCE INSTRUCTIONS
It is recommended that you check the following items at least every six months and at the beginning of every swimming season.
1.Examine the venting system. Make sure there are no obstructions in the flow of combustion and ventila- tion air.
2.Visually inspect the main burner and the hot surface ignitor. The normal color of the flame is blue. When flame appears yellow, burners should be inspected and cleaned. Check ignitor for damage.
3.Keep the heater area clear and free from combustibles and flammable liquids.
Figure 22. | |
|
Pressure Relief Valve
In some installations, a pressure relief valve (PVR) is required on the
MiniMax NT Low NOx. To install a PRV, carefully drill
a 3/8 in. hole in center of 3/4 in.
NPT port (on main header) being careful to drill only thru wall at bottom of 3/4 in. NPT port and no
ENERGY SAVING TIPS
1.If possible, keep pool or spa covered when not in use. This will not only cut heating costs, but also keep dirt and debris from settling in the pool and conserve chemicals.
2.Reduce the pool thermostat setting to 78° F. or lower. This is accepted as being the most healthy temperature for swimming by the American Red Cross.
3.Use an accurate thermometer.
4.When the proper maximum thermostat settings have been determined, tighten the thermostat knob stopper.
5.Set time clock to start circulation system no earlier than daybreak. The swimming pool loses less heat at this time.
6.For pools that are only used on the weekends, it is not necessary to leave the thermostat set at 78° F. Lower the temperature to a range that can be achieved easily in one day. Generally, this would be 10° F. to 15° F., if pool heater is sized properly.
7.During the winter or while on vacation, turn the heater off.
8.Set up a regular program of preventative maintenance for the heater each new swimming season. Check heat exchanger, controls, burners, operation, etc.
SPRING AND FALL OPERATION
If the pool is being used occasionally, do not turn the heater completely off. Set the thermostat down to 65° F. This
will keep the pool and the surrounding ground warm enough to bring the pool up to a comfortable swimming temperature in a shorter period of time.
WINTER OPERATION
If the pool won't be used for a month or more, turn the heater off at the main gas valve. For areas where there is no danger of water freezing, water should circulate through the heater all year long, even though you are not heating your swimming pool. The MiniMax NT Low NOx should not be operated outdoors at temperatures below 0° F. for propane and
Where freezing is possible, it is necessary to drain the water from the heater. This may be done by opening the drain valve, located at the inlet/outlet header (see Figure 23.), allowing all water to drain out of the heater. It would be a good practice to use compressed air to blow the water out of the heat exchanger. (See additional notes under Important Notices in Introduction.)
P/N 471593 | Rev. C |
