INSTALLATION - EVACUATED TUBES
Rinnai 23
EVT DD Solar Pre Heat System Operation and Installation Manual
Fitting the Evacuated Tubes
WARNING
The fin and bulb on the evacuated tube will become hot when exposed to sunshine. Take care when
handling to prevent burns.
Step 1. Unscrew the tube cap as shown
Step 2. Slide the evacuated tube through the tube
cap.
Step 3. Position the dust cap into the header
Step 4. Apply heat transfer paste to heat pipe bulb.
Step 5. Slide the tube into the header. Soapy water
around the outside of the glass will make
this easier
Step 6. Replace the tube cap.
Step 7. Repeat steps 1 to 6 for the remaining tubes