Service manual

— Page 95 —
© January 2013 Aqua-Hot
®
600-D01 Series Hydronic Heating System Service Manual - Rev. A
2. On the Top of the Aqua-Hot:
A. Radiator Cap
i. Bad seal
ii. Loose
B. Expansion Tank Tubing
i. Cracked
ii. Loose
C. Filler Neck
i. Bent
ii. Broken nipple
iii. Bad solder joint
D. Supply and Return interior zone heat ports.
i. Tubing/hose
ii. Brass fittings
SECTION 10: TROUBLE SHOOTING
A
B
C
D
Figure 67