Install Instructions (Venting)

2.0 Direct Vent Installation of Vent/Air Piping

2.2.4 Direct Vent - Multiple Boiler Installation -

Sidewall

1. On installations of multiple PRESTIGE boilers, ter-

minate each vent and combustion air pipe as

described in this manual.

2. The wall penetration of the vent and combustion air

pipe should be such that the combustion air inlet is

a minimum 12” [30.5 cm] from the adjacent vent pipe

of the other boiler for installations in the U.S as

shown in Fig. 20 on page 21. For installations in

Canada, provide clearances as required by

CAN/CSA B149.1.

The combustion air inlet of the PRESTIGE is defined

as being part of a direct vent system. It is not con-

sidered as a forced air intake. The required clear-

ance of an adjacent boiler vent to a forced air inlet

does not apply in a multiple installation of PRES-

TIGE boilers.

NOTICE

Fig. 11 on page 21 shows one option for vent and

combustion air terminations of multiple PRESTIGE

boilers. Either termination option shown in Fig. 6 or

7 on page 19 can be used for multiple PRESTIGE

boilers. The 12” [30.5 cm] minimum distance

between centerlines of the combustion air and vent

piping must be maintained for any chosen option.

Reference Fig. 6 or 7 on page 19 for the configura-

tion dimensions for the vent and combustion air

inlet terminations for each unit installed in a multi-

ple installation.

NOTICE

Vent Termination

Bird Screen

Horizontal Vent Bird Screen Installation with

Coupling Termination

Fig. 9:

Combustion Air

Termination

Bird Screen

Horizontal Combustion Air Bird Screen

Installation with 90º Elbow Termination

Fig. 10:

Installer must install the factory supplied “bird

screens” on the vent and combustion air termina-

tions.

NOTICE