Service manual

06/2010
5. Take the two wire ties. One goes around the wires as a strain relief. The other goes near the
thermister (about 3/8” away from the head) to hold the thermister against the tube. CAUTION: 1)
Do not place the tie wrap over the thermister tip as this may crack the thermister, and 2)
Do not over-tighten the wire ties.
6. Check the resistance across the thermister leads. Under room temperature conditions the value
should be between 700 - 1100 ohms. A further check may be to compare the resistance
measurement to the other two thermisters. If all thermisters have been exposed to the same
temperature they should be within 50 ohms.
7. Wire tie the thermister harnesses together and connect into the thermister harness that goes
back to the control board.
8. Perform a test of the unit. Refer to SM500-16 ‘Testing the RV500’.
Kit Parts List:
1437 T-out thermister assembly
Figures:
none
Model: RV500-F-L / RV501-F-L
SM500-10 Burner Assembly Replacement
Other service documents required:
SM500-16 Testing the RV500
Tools Required:
Phillips screwdriver
¼” socket
9mm open end wrench
3/8” open end wrench
level
1. Turn power OFF, water OFF, and gas OFF.
2. Remove the hood assembly per SM500-04.
3. Remove the heat exchanger / burner assembly 1434 per SM500-05.
4. Remove the two 8-32 machine nuts from the left side of the heat exchanger that attach the heat
exchanger assembly 1435 from the burner assembly 1315.
5. Turn the heat exchanger assembly 1435 upside down and place on a flat, level table. Assemble
the new burner assembly 1315 onto the burner so that the high side of the burner is on the