Raypak HI DALTA HD101 User Manual download pdf (Page 41)

3. Remove the (4) screws holding the panel in place.

4. Pull the air filter out for inspection. Replace if nec-

essary.

5. When replacing, note the direction of the air flow

defined on the side of the filter. The arrow should

be pointing downward.

6. Replace the panel and screws before operating.

Fig. 34: Remove the Screws and Panel

Fig. 35: Inspect the Air Filter

Heat Exchanger Removal

Refer to Fig. 36 for the following procedure.

1. Before beginning, make sure the heater is cool to

the touch. Shut water, gas and electricity off, close

alves and relieve pressure, then remove the relief

valve. Remove side inspection panels.

2. Remove screw behind inspection panels holding

the jacket top down.

3. Remove the front panel. Remove two additional

screws holding the jacket top to the top support.

4. Disconnect vent pipe from the flue exhaust and set

aside.

5. Remove jacket top, then disconnect vent switch

hose.

6. Remove two rows of screws holding the flue col-

lector to the combustion chamber. Remove two

additional screws located on the front combustion

panel. Cut any silicone holding the flue collector

and heat exchanger in place.

7. Carefully lift and remove the flue collector.

8. Lift heat exchanger straight up being careful not to

damage the refractory.

9. Reverse the above procedure to re-install. Make

sure sufficient high temperature silicone sealant

(RTV) is placed along the vertical sides of the tube

sheet and flue collector.

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Raypak HI DALTA HD101 User Manual Page 41