Lochinvar 399 operation manual KBX-I-ORev H 4/10

Revision Notes: Revision B (ECO #C02407) reflects gas valve adjustment, room air, new sidewall vent termination, piping diagrams, flow switch, relief valve, T & P gauge, Maintenance Section, FIG. 8-1 (Line Voltage), and high altitude changes.

Revision C (ECO #C02545) reflects the addition of references to the safety shutoff testing and instructions, sediment trap, periodic cleaning of screens in vent terminations, removal of B149.2 references, changed the arrow direction on FIG. 6-8, wall thickness for direct vent terminations and sidewall vent termination kit number correction.

Revision D (ECO #C02738) reflects updates made to the line voltage image (FIG. 8-1 on page 43), and edits made to the gas conversion section for the new orifice on the 399 model (page 12).

Revision E (ECO #C03223) reflects edits made to the high altitude section on page 7 and updates made to the condensate trap image on pages 49 and 66.

Revision F (ECO #C03735) reflects, room air, LWCO, pump, hydro and dirt separator changes.

Revision G (ECO #C04433) reflects the addition of the illustrations disclaimer on all the piping drawings (ECR #R02431), changing out “dirt separator” for “Y-Strainer” (ECR #R02455), address Step #5 of the Sequence of Operation, add a description column in Table 3F, and change the direction of the arrows on FIG. 6-8.

Revision H (ECO #C05457) update the vent table to reflect Schedule 80 as acceptable CPVC material (R02799), add stainless steel as acceptable material in a closet or alcove installation (R02900), add flex- smooth wall to the FasNSeal material (ECR #R02845), and update the HEX cleaning procedure to reflect the new HEX cleaning kit (R02634).

KBX-I-O Rev H

4/10