3A. Start-Up Procedure

Page 18

5.Start the heater by setting the control panel to either "Pool" or "Spa". Allow the heater to operate for five minutes or more. Note and record the thermometer reading. Subtract pool water temperature from this reading. This difference is the temperature rise. Refer to Table 8. If your measured temperature rise is within the range designated for your heater, skip steps 6 through 8.

6.Locate the bypass adjustment screw on the right-hand side of the header (see figure 20). Loosen the nut so that the screw can be adjusted. A slight water leak past the nut may be expected. Turn the screw counterclockwise to decrease the temperature rise, and clockwise to increase the temperature rise as needed to achieve the ranges in Table 8. After the adjustment, tighten the nut so that no leaks occur.

7.If the temperature rise is too low and cannot be raised by means of the adjustment screw, the flow is in excess of 125 GPM (7.9 l/s). An external bypass will need to be installed, or if one already exists, open the external bypass valve gradually until the temperature range in Table 8 is achieved.

8.If it was necessary to adjust the external bypass as outlined in step 6, scribe a line on the bypass shaft and case to mark the correct adjustment position.

Wire or remove the valve handle to prevent tampering.

Note that temperature rise is somewhat less when a heater is derated for installation at elevations significantly above sea level. For high elevation installations, reduce the numbers in Table 8 by 3% per 1000 feet above sea level.

Table 8. Water Temperature Rise and Flow Rates

(Measured at Input/Output Header)

	Minimum	Maximum	Minimum System
Model	Temp Rise,	Temp Rise,	Flow
	°F (C)	°F (C)	GPM	(l/s)

250	24 (13)	28 (16)	30	(1.9)

400	36 (20)	40 (22)	30	(1.9)

In a system without external bypass, it may be

necessary to make changes. If temperature rise is too low, a manual bypass must be installed. If temperature rise is too high, there is inadequate flow, possibly requiring a change to the piping system or a larger pump. Before proceeding with either remedy, verify proper heater operation. Low gas input results in low temperature rise and vice-versa. A problem with the heater internal bypass assembly also affects measured temperature rise.

SECTION 3. Operating Instructions

Lighting and shutdown instructions are posted inside the heater.

WARNING

Do not attempt repairs on the gas control or appliance. Tampering is dangerous and voids all warranties.

WARNING

LP GAS: To avoid possible injury, fire and explosion, read and follow these precautions and all instructions on this appliance before starting the heater. LP (propane) gas is heavier than air and will remain at ground level if there is a leak. Before lighting, sniff at ground level. If you smell gas, follow these rules:

1.DO NOT light matches. DO NOT turn electric lights or switches on or off in area. DO NOT use an electric fan to remove the gas from area.

2.Shut off gas at LP tank.

3.Telephone gas company and fire department for instructions. Give your name, address and phone number.

If your LP tank runs out of fuel, turn off gas at the appliance. After the tank is refilled, the appliance must be restarted according to the instructions located on the inside of the door.

With any new pool or spa installation, run the filter pump with the heater off long enough to completely clean the water. This removes any installation residue from the water. Clean the filter at the end of this operation before starting the heater. Do not operate the heater unless the pool is properly filled with water.

When raising the temperature of water in a cold pool, remove all time clock settings. This lets the filter system and heater operate continuously until the water reaches the temperature setting on the thermostat. When that happens, the heater will shut off automatically, but the filter pump will keep running.