Smith Cast Iron Boilers GVIOM-5R - Manuel (Page 9)

Page 9
GV100W BOILER
INSTALLATION & OPERATING INSTRUCTIONS
Horizontal vent systems shall terminate at least 4 ft, 1.3 m,
below, 4 ft, 1.3 m, horizontally from or 1 ft, 0.23 m, above any
door, window or gravity air inlet into any building. It must not
terminate less than 4 ft,
1.3 m, horizontally from, and in no
case above or below, unless a 4 ft, 1.3 m, horizontal distance
is maintained, from electric meters, gas meters, regulators and
relief equipment and not less than 7 ft,
2.3 m, from any
adjacent public walkway. The bottom of the vent terminal(s)
shall be located at least 5 ft,
1.5 m, above the air intake
terminal(s).
ATTENTION.
Au moment de l’entretien des commandes, étiquetez tous
les fils avant de les débrancher. Des erreurs de câblage
peuvent entraîner un fonctionnement in-adéquat et
dangereux. S’assurer que l’appareil fonc-tionne
adéquatement une fois l’entretirn terminé.
The hoizontal vent system must terminate with a Field Controls
SK-4G or Breidert L4 vent terminal or a 4" 90° elbow fitted with
a 1/4" wire mesh debris screen.
Avoid locations likely to be affected by winds, snow drifts,
people and pets. Protect building materials and vegetation from
degradation caused by the flue gases.
HEATING SYSTEM PIPING
CAUTION: All heating system piping must be installed in
accordance with the ANSI/ASME Boiler and Pressure
Vessel Code, Section IV, and ANSI/ ASME CSD-1, Standard
for Controls and Safety Devices for Automatically Fired
Boilers. All applicable local codes and ordinances must
also be followed. If the boiler is installed above any
radiation elements it must be fitted with a low water cutoff
device installed above the normal boiler water level.
The GV100W hot water boiler comes from the factory ready
to be piped to the heating system. Each boiler is equipped
with a safety relief valve which must be piped in accordance
with the ANSI/ASME Boiler and Pressure Vessel Code,
Section IV, see FIG. NO. 5.
Ensure that the boiler is level from front to back and from side
to side. Use metal shims to level the boiler. Never use
combustible materials for shims.
CAUTION: To prevent damage due to excessive conden-
sation, one of the following piping options should be used.
OUTSIDE WALL
THIMBLE
VENT SYSTEM
8"
BOILER
18" MIN.
4' MIN.
HORIZONTAL VENTING
Horizontal vent systems must be in compliance with UL 1738
for installations in the United States, ULS636 for installations
in Canada.
For best results, horizontal vent systems should be as short
and straight as possible. The 4" adapter must be attached directly
to the boiler outlet. A vertical vent run at least 18 inches high
must be installed before any horizontal run begins. If the boiler
is installed using a 3" diameter vent system, a 4" to 3" diameter
reducer must be installed after the 18 inch vertical run. The
previously mentioned vent system manufacturers have the
proper adapters and reducers available.
The vent system must be both gas tight and watertight. All
seams and joints in metal pipes must be joined and sealed in
accordance with the vent system manufacturers instructions.
When horizontal vent runs exceed 5 feet they must be
supported at 3 foot intervals with overhead hangers.
FIG. NO. 4B Horizontal Venting
The maximum vent length for 3" diameter vent systems is 20
feet, one 90° elbow and a vent terminal or 15 feet, two 90°
elbows and a vent terminal. The maximum vent length of 4"
diameter vent systems is 30 feet, four 90° elbows and a vent
terminal. To maximize the performance of the vent system,
locate 90° elbows as far from the boiler and one another as
possible. The minimum horizontal vent length is 4 feet, see FIG.
NO. 4B.
The vent system must be pitched down, toward the vent
terminal, 1/4" per foot. If any part of a single wall metal vent
system passes through an unheated space it must be insulated
with insulation rated for 450°F.
WARNING: The bottom of the vent terminal must be
located at least 12 inches above grade including the
maximum snow line. Failure to provide adequate vent
terminal clearance for this boiler can result in excessive
levels of carbon monoxide that can result in severe
personal injury or death!