Diagrams For Sidewall Venting - Heat Transfer MODCON VWH 300 LP Installation & Maintenance

PART 6: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL
I. DIAGRAMS FOR SIDEWALL VENTING
TWO PIPE SIDEWALL VENTING W/TEE (INTAKE)
AND COUPLING (EXHAUST)
Figure 6-7
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
LP-205-E Rev. 6/23/08
n
WARNING
TWO PIPE SIDEWALL VENTING
WITH V-SERIES KIT
SUPPORT BRACKETS
MUST BE USED ON
ALL HORIZONTAL
AND VERTICAL PIPING
EXHAUST
VENT
RIGHT SIDE VIEW
NOTE: VENT MUST BE AT LEAST 12" OVER MAXIMUM SNOW
LEVEL OR 24" WHICHEVER IS GREATER - CHECK WITH LOCAL
CODE REQUIREMENTS
NOTE: THE EXHAUST VENT
CONNECTION MUST BE INSERTED A
MINIMUM OF 2-1/2"
FOR THE MODCON 300/500
AND 3" FOR THE MODCON 850
1. Prep PVC Pipe by removing burrs on the leading edge before inserting
into the boiler adapter to prevent damage to internal o-ring seal.
Do not use any Liquids or Petroleum based products that could
damage the o-ring seal - It is recommended you use talcum powder
to assist in inserting pipe into adapter.
2. Tighten clamp to a maximum of 50 inch pounds to avoid reforming
connected PVC which may cause combustion leaks.
Figure 6-8
Boiler Manual
(CONTINUED)
VENT KIT
(SEE CHART)
7' OR 1'
ABOVE MAX.
POTENTIAL SNOW LEVEL
INTAKE AIR
VENT
LP-205-F Rev. 5/15/08
36