Weil-McLain GOLD CGS 550-110-260/0508 - Manual (Page 8)

Part number 550-110-260/0508
8
GOLD CGs Gas-Fired Water Boiler — Boiler Manual
Prepare boiler location — vent system
1c
Failure to follow all instructions can result in fl ue gas spillage and carbon monoxide emissions, causing severe
personal injury or death.
When removing boiler from an
existing common vent system:
At the time of removal of an existing boiler, the fol-
lowing steps shall be followed with each appliance
remaining connected to the common venting system
placed in operation, while the other appliances remain-
ing connected to the common venting system are not
in operation.
a. Seal any unused openings in the common venting
system.
b. Visually inspect the venting system for proper
size and horizontal pitch and determine there is no
blockage or restriction, leakage, corrosion or other
defi ciencies which could cause an unsafe condi-
tion.
c. Test vent system — Insofar as is practical, close all
building doors and windows and all doors between
the space in which the appliances remaining con-
nected to the common venting system are located
and other spaces of the building. Turn on clothes
dryers and any appliance not connected to the com-
mon venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, so they will
operate at maximum speed. Do not operate a sum-
mer exhaust fan. Close fi replace dampers.
d. Place in operation the appliance being inspected.
Follow the lighting/operating instructions. Adjust
thermostat so appliance will operate continuously.
e. Test for spillage at draft hood relief opening after
5 minutes of main burner operation. Use the fl ame
of a match or candle.
f. After it has been determined that each appliance
remaining connected to the common venting system
properly vents when tested as outlined above, return
doors, windows, exhaust fans, fi replace dampers,
and any other gas-burning appliance to their previ-
ous conditions of use.
Any improper operation of common venting system
should be corrected so the installation conforms with
the National Fuel Gas Code, ANSI Z223.1-latest edition.
Correct by resizing to approach the minimum size as
determined using the appropriate tables in Part 11 of
that code. Canadian installations must comply with
B149.1 or B149.2 Installation Code.
CGs special vent system
Vent system
The CGs boiler requires a special vent system, designed
for pressurized venting. Model CGs-3 is rated ANSI
Z21.13
Category IV (pressurized vent, likely to condense
in the vent). Models CGs-4, -5 and -6 are rated Z21.13
Category III (pressurized vent).
You may use any of the vent systems covered by the
CGs Venting Supplements included in the envelope as-
sembly. The CGs vent starter is a special item, designed
only for the CGs boiler, available from each vendor. Do
not attempt to connect the vent to the CGs boiler with
any other means.
DO NOT mix components from
different systems. The vent system
could fail, causing leakage of fl ue
products into the living space.
Vent termination and combustion air
supply
The CGs boiler may be vented through the roof or
through a side wall. Follow the appropriate vent supple-
ment for the vent system chosen. The maximum vent
length depends on boiler size. Refer to the vent supple-
ment to determine acceptable vent length.
Combustion air for the CGs boiler may be from in-
side or ducted directly to the boiler from outside. For
outside air (direct vent installation), two options are
available for the fl ue/air termination. The air supply
must
ALWAYS terminate at the same location as the
fl ue, using either:
1. Vertical direct vent installation. Obtain the
Weil-McLain Through-Roof or Through-Unused
Chimney termination kit and supplement. Refer
to Vertical Direct Venting Venting Supplement,
packed with the kit, and to the vent manufacturer’s
instructions for the vent material chosen.
2. Sidewall direct vent installation. Use the Vent/Air
Intake termination kit shipped with the boiler. Refer
to CGs Direct Venting: Sidewall & Direct Exhaust
Venting: Vertical or Sidewall Venting Supplement
shipped with the boiler.
DO NOT COMMON VENT — Do not install the CGs into a common vent with any other appliance. This will
cause fl ue gas spillage or appliance malfunction, resulting in possible severe personal injury, death or substantial
property damage.
Inspect existing chimney before installing boiler. Failure to clean or replace perforated pipe or tile lining will cause
severe personal injury or death.