Coaxial Vent Screw Placem Ent - UTICA BOILERS MAHF-75 Installation, Operation And Maintenance Manual

5 .7 Coa x ia l Vent Screw Pla cem ent - See Figure 5 - 3
Two ( 2) screws shall be fast ened t hrough t he out er
int ake pipe behind t he gasket s at equal dist ances,
approxim at ely 180° apart . Not e t he screws used m ust
be no larger t han No. 8- 3/ 4 sheet m et al screws and
m ust be zinc coat ed.
Figure 5 - 3 - Coa x ia l Screw Pla cem ent
FI GURE 5 - 4 Roof M ount Coa x ia l Vent ing
CAN BE U SED ON ALL SI Z ES
FI GURE 5 - 5 - Coa x ia l Vert ica l Ex ha ust -
CAN BE U SED ON ALL SI Z ES
12" ( 305 m m )
Minim um Separat ion
5 - COM BU STI ON AI R AN D V EN T PI PI N G
Maint ain 12" ( 305 m m )
US ( 18" ( 457 m m )
Canada) clearance above
highest ant icipat ed snow
level 24" ( 610 m m )
Ant icipat ed
Snow Line
above roof or ground
Multiple
Appliances
Manufact urer
Recom m ends
Great er Separat ion
FI GURE 5 - 6 Side W a ll Coa x ia l Vent ing
CAN BE U SED ON ALL SI Z ES
FI GURE 5 - 7 - Coa x ia l H orizont a l Ex ha ust -
CAN BE U SED ON ALL SI Z ES
2 2
18" Vert ical
Clearance t o
ventilated soffit
Min. 8" ( 181
m m )
Max. 14" ( 356
m m )
Maint ain 12" ( 305 m m )
US ( 18" ( 457 m m )
Canada) clearance
above highest
ant icipat ed snow level
24" ( 610 m m ) above
roof or ground
Ant icipat ed
Snow Line
Ground
Multiple
Appliances
24" ( 610 m m )
Min. Separat ion
Manufact urer
Recom m ends
Great er
Separat ion
recom m ends gr
240013503 REV A, [ 03/ 15/ 2022]