Lochinvar ARMOR 151 - Manual (Page 27)

Installation & Operation Manual
4
Sidewall direct venting
(continued)
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. 4-5B.
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.
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 Armor water heaters terminate
each vent/air connection as described in this manual (FIG.
4-6A).
2. Place wall penetrations to obtain minimum clearance of
12 inches between edge of air inlet and adjacent vent outlet,
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.
ƽ WARNING
12" MIN. BETWEEN EDGE OF AIR
INLET AND ADJACENT VENT OUTLET
VENT / AIR
TERMINATION
VENT
AIR
Figure 4-6A Multiple Vent Terminations (must also
comply with Figure 4-1A)
Figure 4-6B Alternate Multiple Vent Terminations w/Field
Supplied Fittings (must also comply with Figure 4-1B)
SIDEWALL
TERMINATION PLATE
VENT
PIPING
GALVANIZED
THIMBLE
(WHEN REQUIRED BY LOCAL CODES)
ELBOW
ELBOW
AIR PIPING
BIRD SCREEN
BIRD SCREEN
Figure 4-5B A Typical Sidewall Termination Assembly
- Models 151 - 801 PVC/CPVC or Stainless Steel
Termination and fittings
1. Prepare the vent termination elbow and the air
termination elbow (FIG. 4-5B) by inserting bird screens.
Bird screens can be obtained locally.
2. When completed, the air termination coupling must
be oriented at least 12 inches (305 mm) below the vent
termination and at least 12 inches (305 mm) above grade
or snow line as shown in FIG. 4-1A, page 24.
3. Maintain the required dimensions of the finished
termination piping as shown in FIG. 4-1A, page 24.
4. Do not extend exposed vent pipe outside of building
more than shown in this document. Condensate could
freeze and block vent pipe.
5. PVC/CPVC terminations are designed to accommodate
any wall thickness of standard constructions per the
directions found in this manual.
6. Stainless steel terminations are designed to penetrate walls
with a thickness up to 9.25 inches of standard construction.
27