Weil-McLain Evergreen EVG 110 Manual Download Page 8

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Boiler location

Installations must comply with:

• Local, state, provincial, and national codes, laws,

regulations and ordinances.

•

National Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest
edition.

•

National Electrical Code ANSI/NFPA 70 – latest edition.
Electrical installation and grounding must be in
accordance with CSA C22.1, Part 1, Canadian Electrical
Code, and/or local codes.

• For Canada only: CAN/CSA B149.1, Natural Gas and

Propane Installation Code, and any local codes.

•

Where required by the authority having jurisdiction, the
installation must conform to the Standard for Controls
and Safety Devices for Automatically Fired Boilers,
ANSI/ASME CSD-1.

The

Evergreen

boiler gas manifold

and controls met safe lighting and other
performance criteria when boiler underwent
tests speciﬁ ed in ANSI Z21.13 — latest
edition.

Before locating the boiler, check:

1. The

Evergreen

boiler

can be ﬂ oor-standing or wall

mounted.

2. Wall construction — If the boiler is wall-mounted,

make sure the wall construction is suitable to carry
the weight of the boiler and components. See page 10
for instructions.

3. The boiler is suitable for INDOOR installation

only.

4. Check for nearby connection to:

•

System water piping

• Venting connections

•

Gas supply piping

• Electrical power

• Condensate

drain

5. Check area around boiler. Remove any combustible

materials, gasoline and other ﬂ ammable liquids.

Failure to keep boiler area clear and free of

combustible materials, gasoline and other
ﬂ ammable liquids and vapors can result in
severe personal injury, death or substantial
property damage.

6. The

Evergreen

boiler must be installed so that gas

control system components are protected from dripping
or spraying water or rain during operation or service.

7. If new boiler will replace existing boiler, check for and

correct system problems, such as:

•

Sediment or corrosion in system piping — clean and
ﬂ ush piping BEFORE connecting the new boiler.
See page 91 .

• System leaks causing oxygen corrosion or heat ex-

changer cracks from hard water deposits.

•

Incorrectly-sized expansion tank.

• Lack of freeze protection in boiler water causing

system and boiler to freeze and leak.

Residential garage installation

Precautions

1. Take the following special precautions when installing the boiler in

a residential garage. If the boiler is located in a residential garage:
• Mount the boiler with its burner and igniter are at least

18 inches above the ﬂ oor. Follow the National Fuel Gas Code,
ANSI Z223.1 for U. S. installations, or Natural Gas and Pro-
pane Installation Code, CSA B149.1 and B149.2 for Canadian
installations.

• Locate or protect the boiler so it cannot be damaged by a

moving vehicle.

•

Ensure that the installation complies with all applicable codes.

•

Prevent boiler water and condensate from freezing.

Provide air openings to room

Evergreen

boiler alone in boiler room

1. No air ventilation openings into boiler room are needed if

clearances around boiler are at least equal to the SERVICE
clearances shown in Figure 1, page 9 .

2. For spaces that DO NOT supply the minimum service clearances,

provide two openings as shown in Figure 1, page 9 . Each opening
must provide 1 square inch free area per 1,000 Btuh of boiler input.

The space must be provided with combustion/

ventilation air openings correctly sized for all
appliances located in the same space as the

Evergreen®

boiler.

Reinstall boiler jacket door after servicing. The boiler
jacket door must be securely fastened to the boiler to
prevent boiler from drawing air from inside the boiler
room. This is particularly important if the boiler is
located in the same room as other appliances.

Failure to comply with the above warnings could
result in severe personal injury, death or substantial
property damage.

Evergreen

boiler in same space with other gas or

oil-ﬁ red appliances

1. Follow the sizing requirements shown in Figure 25, page 27 .

Vent and air piping

1. The

EVG

boiler requires a special vent system, designed for

pressurized venting. The boilers are rated ANSI Z21.13 Category
IV (pressurized vent, likely to condense in the vent). See
instructions beginning on

page 22

2. You must also install air piping from outside to the boiler air

intake adapter. The resultant installation is categorized as direct
vent (sealed combustion). Note prevention of combustion air
contamination on

page 22

when considering vent/air termination.

3. Vent and air must terminate near one another unless otherwise

speciﬁ ed in this manual. Vent and air piping may be routed
vertically through the roof or out a side wall, following the options
given in this manual. You may use any of the vent/air piping
methods covered in this manual. Do not attempt to install the

EVG

boiler using any other means.

4. Be sure to locate the boiler such that the vent and air piping can be

routed through the building and properly terminated. The vent/air
piping lengths, routing and termination method must all comply
with the methods and limits in instructions beginning on

page 22

Part number 550-100-191/0917

as-fired water boiler —

70/110/155

Boiler Manual