Multiple Vent/Air Terminations - Lochinvar 151 Installation & Operation Manual

4
Sidewall direct venting
Figure 4-5B Polypropylene Sidewall Termination Assembly
SIDEWALL
ADAPTER
(VENT)
GALVANIZED
THIMBLE
Prepare wall penetrations (Alternate -
Field Supplied Option)
1. Air pipe penetration:
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:
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:
• 4½ inch hole for 3 inch vent pipe
• 5½ inch hole for 4 inch vent pipe
• 7½ inch hole (191 mm) hole for 6 inch (152 mm)
vent pipe
b. Insert a galvanized metal thimble in the vent pipe
hole as shown in FIG. 4-5C.
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.
Figure 4-5C A Typical Sidewall Termination Assembly
- Models 151 - 801 PVC/CPVC or Stainless Steel
SIDEWALL
TERMINATION PLATE
VENT
PIPING
BIRD SCREEN
ELBOW
BIRD SCREEN
SIDEWALL
ADAPTER
(AIR)
WALL
PLATE
SIDEWALL
RETAINING
PLATE
VENT
PLATE
IMG00085
GALVANIZED
THIMBLE
(WHEN REQUIRED BY LOCAL CODES)
ELBOW
AIR PIPING
Installation & Operation Manual
(continued)

Multiple vent/air terminations

1. When terminating multiple Armor water heaters terminate
each vent/air connection as described in this manual
(FIG. 4-6A).
All vent pipes and air inlets must terminate
WARNING
at the same height to avoid possibility of
severe personal injury, death, or substantial
property damage.
2. Place wall penetrations to obtain minimum clearance of
12 inches between edge of air inlet and adjacent vent outlet,
VENT
CAP
as shown in FIG. 4-6A for U.S. installations. For Canadian
installations, provide clearances required by CSA B149.1
Installation Code.
3. The air inlet of a Armor water heater is part of a direct vent
connection. It is not classified as a forced air intake with
regard to spacing from adjacent water heater vents.
Figure 4-6A Multiple Vent Terminations (must also
comply with Figure 4-1A)
VENT
VENT / AIR
TERMINATION
Figure 4-6B Alternate Multiple Vent Terminations w/Field
Supplied Fittings (must also comply with Figure 4-1B)
12" MIN. BETWEEN EDGE OF AIR
INLET AND ADJACENT VENT OUTLET
AIR
27