Heater Removal From A Common Vent System; Condensate Removal System - Munchkin Gas-fired Hot Water Boiler Manual

GAS-FIRED BOILER
PART 7: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL
2. All joints must be properly cleaned, primed,
and cemented. Use only cement and primer
approved for use with the pipe material. See
Approved Venting Material, page 43.
WARNING
All joints of positive pressure vent systems
must be sealed completely to prevent leakage
of flue products into the living space.
3. Horizontal lengths of exhaust vent must slope
back towards the boiler not less than ¼" per
foot to allow condensate to drain from the
vent pipe. If the exhaust pipe must be piped
around an obstacle that results in the creation
of a low point, condensate will collect in this
low point and form a blockage. This
condensate must be drained away using a
field-installed condensate drain assembly as
shown.
4. All piping must be fully supported. Use pipe
hangers at a minimum of 4 foot intervals to
prevent sagging of the pipe where
condensate may form.
5. Do not use the boiler to support any piping.
6. A screened straight coupling is provided with
the boiler for use as an outside exhaust
termination.
7. A screened inlet air tee is provided with the
boiler to be used as an outside intake
termination.
8. The following information on Table 7.9 are
optional intake air/exhaust vent terminations
available from Heat Transfer Products, Inc.
Table 7.9: Vent Termination Kits
Description
2" PVC Concentric Vent Termination Kit
3" PVC Concentric Vent Termination Kit
2" Stainless Steel Vent Termination Kit
3" Stainless Steel Vent Termination Kit
4" Stainless Steel Vent Termination Kit
G. HEATER REMOVAL FROM A COMMON
VENT SYSTEM
At the time of removal of an existing heater, the
following steps shall be followed with each
appliance remaining connected to the common
venting system placed in operation, while the
other appliances remaining connected to com-
mon venting system are not operating.
1. Seal any unused openings in the common
venting system.
2. Visually inspect the venting system for proper
size and horizontal pitch to determine if there
is blockage, leakage, corrosion or other defi-
ciencies that could cause an unsafe condition.
3. If practical, close all building doors, windows
and all doors between the space in which the
appliance remains connected to the common
venting system located and other spaces in
the building. Turn on clothes dryers and any
appliances not connected to the common
venting system. Turn on any exhaust fans,
such as range hoods and bathroom exhausts,
at maximum speed. Do not operate a summer
exhaust fan. Close all fireplace dampers.
4. Place in operation the appliance being
inspected. Follow the lighting instructions.
Adjust the thermostat so the appliance will
operate continuously.
5. Test for spillage at the draft hood relief
opening after 5 minutes of main burner
operation. Use the flame of a match or candle
or smoke from a cigarette.
6. After it has been determined that each
appliance remaining connected to common
venting system properly vents when tested as
outlined, return doors, windows, exhaust fans,
fireplace dampers and any other gas burning
appliance to their previous condition of use.
7. Any improper operation of the common
venting system should be corrected so the
installation conforms with the National Fuel
Stock Code
Gas Code, ANSI Z223.1. When resizing any
KGAVT0501CVT portion of the common venting system, the
common venting system should be resized to
KGAVT0601CVT
approach the minimum size as determined
V500
using the appropriate tables in Appendix G in
V1000
the National Fuel Gas Code , ANSI Z 223.1
V2000
I. CONDENSATE REMOVAL SYSTEM
This is a condensing high efficiency appliance,
therefore this unit has a condensate removal
system. Condensate is nothing more than water
vapor, derived from the combustion products,
similar to an automobile when it is initially start-
Boiler Manual
(CONTINUED)
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