Utica Boilers UB90-100 インストール手順

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12.  Connect pressure tubes: See fi gure 21.

A.  Site glass - run tube over gas valve assembly 

and/or piping creating an inverted u-trap. 

Translucent silicone tubing coming from a tee.

B.  Gas valve - reference port. Clear silicone tube 

coming from a cross.

C.  Air intake. Clear silicone tube coming from the 

cross.

13.  Wire junction box internal wires and cover plate. 

See fi gure 19.