U.S. Boiler Company MPO - IQ, Service Instructions Manual

Page: 10 / 92

10
6. Louvers and Grilles of Ventilation Ducts
a. All outside openings should be screened and louvered.
Screens used should not be smaller than 1/4 inch mesh.
Louvers will prevent the entrance of rain and snow.
b. Free area requirements need to consider the blocking
effect of louvers, grilles, or screens protecting the
openings. If the free area of the louver or grille is not
known, assume wood louvers have 20-25 percent free
area and metal louvers and grilles have 60-75 percent
free area.
c. Louvers and grilles must be fixed in the open position, or
interlocked with the equipment to open automatically
during equipment operation.
D. DIRECT VENT CONFIGURATIONS requires:
1. Beckett NX Burner
2. Direct Vent Conversion Kit
3. Double Wall Flex Oil Vent Pipe (FOVP)
Boiler
Model No.
Beckett NX
Oil Burner
Part No.
Direct Vent
Conversion Kit
Part No.
FOVP Carton Part
No.
MPO-IQ147 103896-03
102130-02
100211-02 - 5 ft.
100212-02 - 10 ft.
MPO-IQ189 103897-04
100213-02 - 15 ft.
100214-02 - 20 ft.
MPO-IQ231 103898-05 102130-03
100211-03 - 5 ft.
100212-03 - 10 ft.
100213-03 - 15 ft.
100214-03 - 20 ft.
TABLE 2: DIRECT VENT CONFIGURATION
COMPONENTS
I. PRE-INSTALLATION (continued)