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Water boiler
Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler
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13 - TROUBLE SHOOTING
Connect harness to T
ransformer
.
Disconnect harness from Low
W
ater Cutoff
.
Is 24 vac at terminals 1 & 2
(Between blue and yellow wires)?
YES
NO
Repair S
ystem Piping, remov
e
any remaining air in system.
1
...
...
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