Installation manual

POTENTIAL
12"
SNOW LEVEL
7’ or 1’
ABOVE MAX.
12"
WITH STAINLESS STEEL
SIDEWALL VENTING
GALVANIZED
B-VENT
6" Z-FLEX 2SVSRTX06
4" Z-FLEX 2SVSRTF04
TERMINATION
SIDE WALL EXHAUST
AIR INTAKE
SUPPORT
BRACKETS
Figure 6-13 LP-205-Y Rev. 1/30/09
PART 6: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL (CONTINUED)
n
WARNING
All vent pipes must be glued, properly supported and the exhaust must be pitched a minimum of a ¼" per
foot back to the heater (to allow drainage of condensate). Exhaust connection insertion depth should be a
minimum of 2½” for models 300/500 and 3” for 850. When placing support brackets on vent piping, the
first bracket must be within 1 foot of the appliance and the balance at 4 foot intervals on the vent pipe.
The boiler venting must be readily accessible for visual inspection for the first three feet from the boiler.
GAS-FIRED HOT WATER SUPPLY BOILER Boiler Manual
38
WHICHEVER IS GREATER
12" OVER MAXIMUM
SNOW LEVEL OR 24"
10’ 0" MIN.
SUPPORT
BRACKETS
6" Z-FLEX 2SVSRC06
4" Z-FLEX 2SVSRCF04
ROOF EXHAUST
RAIN CAP - STAINLESS STEEL
AIR INTAKE
GALVANIZED/B-VENT
24" MIN.
A
D
C
MULTIPLE BOILERS
SINGLE BOILER
RIZONTAL VENTING
E
CODE REQUIREMENTS
LEVEL OR 24" WHICHEVER IS GREATER - CHECK WITH LOCAL
NOTE: VENT MUST BE AT LEAST 12" OVER MAXIMUM SNOW
ROOF VENTING WITH
STAINLESS STEEL (AL294C)
Figure 6-12
VT-A Rev. 8/28/09
A. FOR EVERY 1" OF
OVERHANG THE
EXHAUST VENT
MUST BE
LOCATED 1"
VERTICAL BELOW
OVERHANG
(OVERHANG
MEANS TOP OF
BUILDING
STRUCTURE AND NOT TWO ADJACENT WALLS [CORNER OF
BUILDING]).
B. 12" SEPARATION BETWEEN BOTTOM OF EXHAUST OUTLET AND TOP
OF AIR INTAKE (TYP.)
C. MAINTAIN 12" MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED
SNOW LEVEL OR GRADE WHICHEVER IS GREATER (TYP.)
D. MINIMUM 12" BETWEEN VENTS WHEN INSTALLING MULTIPLE VENTS
E. 12 " MIN. BEYOND INTAKE
DIAGRAM FOR HORIZONTAL VENTING