Waterpik Technologies LG - Manual (Page 16)

Page 14
5. Remove the screws securing the two flue
collector hold down clamps and remove the
clamps (see Figure 9). Remove flue collector.
6. Remove the three rubber jacket/plug grommets
and drain plugs (see Figure 8). One is located
under the water connections on the right side.
The other two are on the left side of the heater.
7. Tag and disconnect the white wire on the
pressure switch (PS) and the white wire on the
Fireman's switch terminal which leads to the high
limit switch.
8. Remove plastic tie wraps and pull the white
wires out of the front compartment through the
vestibule cover and coil them on the heat ex-
changer.
9. Unscrew the brass compression fitting securing
the pressure switch to the inlet/outlet header.
Remove tube from header and gently bend it out
of the way.
10. 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 10). Pull pressure
switch tube through the hole in the vestibule
cover and into the vestibule (controls compart-
ment), then pull thermostat bulb assembly through
same hole (see Figure 11).
11. When removing the heat exchanger from the
heater, the end baffles of the heat exchanger
(installed only on sizes 125 BTU, 175 BTU and
250 BTU) 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 attempting to lift
the heat exchanger out of the heater (see Figure
12).
CAUTION
It may be necessary to have help lifting the heat
exchanger out and replacing it.
ATTENTION
Il peut être nécessaire d’avoir besoin d’aide
pour enlever et remplacer l’échangeur de
chaleur.
12. Lift the heat exchanger assembly out of the
heater. Reinstall heat exchanger 180 degrees
(inlet/outlet header left) from it's original position.
Figure 10. Temperature sensing bulb.
Figure 11. Vestibule covers.
Figure 12. Heat exchanger and end baffles.