Lochinvar Sync Condensing Boiler 1 - Manual (Page 25)

25
Installation & Operation Manual
3
Sidewall direct venting
(continued)
All vent pipes and air inlets must
terminate at the same height to avoid
possibility of severe personal injury,
death, or substantial property damage.
Multiple vent/air terminations
1. When terminating multiple SYNC boilers terminate
each vent/air connection as described in this manual
(FIG. 3-5A).
2. Place wall penetrations to obtain minimum clearance of
12 inches (305 mm) between vent pipe and adjacent air
inlet elbow, as shown in FIG. 3-5A for U.S. installations.
For Canadian installations, provide clearances required by
CSA B149.1 Installation Code.
3. The air inlet of a SYNC is part of a direct vent connection.
It is not classified as a forced air intake with regard to
spacing from adjacent boiler vents.
ƽ WARNING
12" MIN. BETWEEN EDGE OF AIR
INLET AND ADJACENT VENT OUTLET
VENT / AIR
TERMINATION
VENT
AIR
Figure 3-5A Multiple Vent Terminations (must also
comply with Figure 3-1A)
VENT
12” (305 MM) MIN
15” (381 MM) MAX
12” (305 MM) MIN. BETWEEN EDGE
OF AIR PIPE AND ADJACENT VENT
PIPE
AIR
Figure 3-5B Alternate Multiple Vent Terminations w/Field
Supplied Fittings (must also comply with Figure 3-1B)
Prepare wall penetrations (Alternate
Field Supplied Options)
1. Air pipe penetration (see FIG. 3-4B):
a. Cut a hole for the air pipe. Size the air pipe hole as
close as desired to the air pipe outside diameter.
2. Vent pipe penetration (see FIG. 3-4B):
a. Cut a hole for the vent pipe. For either combustible
or noncombustible construction, size the vent pipe
hole with at least a 1/2 inch clearance around the vent
pipe outer diameter:
• 7½ inch (178 mm) hole for 6 inch (152 mm) vent
pipe
• 8½ inch (203 mm) hole for 7 inch (178 mm) vent
pipe
b. Insert a galvanized metal thimble in the vent pipe
hole (when required by local codes).
3. Use a sidewall termination plate as a template for correct
location of hole centers.
4. Follow all local codes for isolation of vent pipe when
passing through floors or walls.
5. Seal exterior openings thoroughly with exterior caulk.
SIDEWALL
TERMINATION PLATE
VENT
PIPING
GALVANIZED
THIMBLE
(WHEN REQUIRED BY LOCAL CODES)
ELBOW
ELBOW
AIR PIPING
BIRD SCREEN
BIRD SCREEN
Figure 3-4C Alternate Sidewall Termination Assembly
PVC/CPVC or Stainless Steel