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using an Allen wrench. Check the instructions
attached to the fuel pump for proper fuel connections.
Compression fittings are not recommended.
See Table 1 for correct fuel line sizes. NEVER
USE TUBING SMALLER THAN 3/8" (1cm).
Water Pik Technologies provides an oil filter with
the
XL-3 heater. Install this filter using the fittings
provided for convenient servicing of the oil burner and
filter (see Fig. 11). Post a notice near the heater stating
filter service frequency.
Provide an approved, high quality shutoff valve
at the oil supply tank.
2F. Water Piping
2F-1. Water Connections
Connect the inlet and outlet piping to the
universal flange couplings on the heater as shown
below. The inlet and outlet ports on the heater are
clearly marked with arrows on top of the control
cover.
The flanged couplings accept either threaded iron
pipe, 1-1/2" NPT, unthreaded 1-1/4" iron pipe, or
1-1/2" copper tubing (see Fig. 12).
Connect the pool heater between the pump and
filter and the pool or spa. If the system flow rate
exceeds 60 gpm (228 lpm), install a manual bypass
valve between the heater inlet and outlet (see Fig. 15).
If the flow rate is below 60 gpm (228 lpm), the
automatic, built-in bypass valve will maintain the
proper flow through the heater.
If a manual bypass is required, adjust it using the
following procedure:
1.
Clean the filter.
2.
Install a thermometer in the 1/2" NPT threaded
opening in the front header casting as shown in
Fig. 13.
3
Close the manual bypass valve.
4.
Turn the heater switch to OFF, and run the filter
pump. Record the temperature.
5.
Turn the heater switch to ON, and turn the
thermostat high enough to call for heat.
6.
Gradually open the manual bypass valve until the
thermometer reads 11 to 14°F (6.1 to 7.8°C) for
the DP-2000 or 16 to 20°F (8.9 to 11.1°C) for
the DP-3000 above the temperature recorded in
Step 4.
Figure 11. Oil Filter Installation.
Figure 12. Water Connections.
Figure 13. Thermometer Placement.
