Teledyne LLG, LLD Temperature sensing bulb, Heat exchanger and end baffles, Vestibule covers

Model LLG & LLD Pool and Spa Heater Page 11

Heat Exchanger

End Baffles

Heat Exchanger

Combustion

Chamber Wall

Figure 14. Temperature sensing bulb.

Figure 16. Heat exchanger and end baffles.

LEFT	RIGHT
VESTIBULE	VESTIBULE
COVER	COVER

FRONT PLASTIC BUSHING

Figure 15. Vestibule covers.

12.Unscrew the brass compression fitting securing the pressure switch. Remove tube from header and gently bend it out of the way.

13.Loosen the screw securing the temperature sensing bulb retainer bracket. Slide the retainer bracket off the bulb flange and remove the bulb from the header (see Figure 14). Pull pressure switch tube through vestibule cover hole first, then pull thermostat bulb assembly through same hole.

14.When removing the heat exchanger from the heater, the end baffles of the heat exchanger must be removed. There are two baffles covering part of the front and rear tubes of the heat exchanger. Each baffle is held in place by two screws which mount to the top of the combustion chamber wall. Remove the screws and the baffles before at- tempting to lift the heat exchanger out of the heater.

Caution

It may be necessary to have help lifting the heat exchanger out and replacing it.

15.Lift out the heat exchanger assembly and set it aside. Re-install heat exchanger 180 degrees from it's original position (header left).

16.When replacing the heat exchanger from the heater, the end baffles must be replaced. Each one is held in place by two screws which mount to the top of the combustion chamber wall. Reinstall the baffles on the front and rear of the heat exchanger before continuing with the "Reversible Water Connections" procedure.

17.Remove the plastic bushing from the hole on the right side of vestibule cover. Re-install it in the hole on the left vestibule cover.

18.Re-route pressure switch tube and thermostat bulb assembly through hole in left side of (vesti- bule) cover in reverse order.

19.Remove pressure switch retainer from vestibule panel (allow pressure switch to float).

20.Re-install the temperature sensing bulb in the header, and fasten it with the retainer bracket and screw.

21.Re-install the compression fitting at end of pressure switch line into header.

22.Route the white wiring beside the heat exchanger and down to the original location. Be careful to keep the wires away from the flue collector. Secure white wires to the pressure switch tube with tie straps.