Weil-McLain Evergreen 220 Guide

User’s
Information Manual
If the information in this manual is not followed exactly, a fire or explosion may result,
causing property damage, personal injury or loss of life.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS —
• Donottrytolightanyappliance.
• Donottouchanyelectricalswitch;donotuseanytelephoneinyourbuilding.
• Immediatelycallyourgassupplierfromaneighbor’stelephone.Followthegassupplier’sinstructions.
• Ifyoucannotreachyourgassupplier,calltheredepartment.
Installation & service must be performed by a qualified installer, service technician or the gas supplier.
Part number 550-100-132/0715
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CONDENSING GAS BOILER
220/299/300/399

Part number 550-100-132/0715
2
Please read this page first
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gas-fired water boiler — User’s Information Manual
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gas-fired water boiler — User’s Information Manual
Condensate
trap and drain line
(drain line must be
installed by quali-
fied technician, per
boiler manual)
asy
Pressure/temperature
gauge
Relief valve
Control display
and buttons
Relief valve drain line (must be run to safe
drainage location — must be installed by qualified
technician, per boiler manual)
MANUAL GAS VALVE
Piping to system
Piping from system
Hazard definitions
The following defined terms are used throughout this
manual to bring attention to the presence of hazards of
various risk levels or to important information concerning
the life of the product.
Indicates presence of hazards that will cause
severe personal injury, death or substantial
property damage.
Indicates presence of hazards that can cause
severe personal injury, death or substantial
property damage.
Indicates presence of hazards that will or can
cause minor personal injury or property damage.
Indicates special instructions on installation,
operation or maintenance that are important
but not related to personal injury or property
damage.
To . . . Read and use . . . Page
Locate boiler
components See illustration at right 2
Learn
precautions See Hazard Definitions, below 2
Read before
proceeding Additional information 3
Prevent air
contamination
Laundry room or pool — make
sure boiler air is piped to boiler per
manual.
Read list of air contaminants you
must avoid. Have boiler air re-piped
to another location if you can’t
avoid.
4
Maintain
boiler
Set up a plan for maintaining the
boiler using the schedule included in
this manual.
Schedule an annual start-up by a
qualified service technician before
every heating season.
5
Start — or —
Shutdown
boiler
Follow the Operating instruction
sheet details to start or shutdown
your boiler.
9
Understand
control
display
This page shows display screen
modes and menu access information. 10
This page shows how to access the
USER MENU to set date and time
and reset faults if the boiler enters
LOCKOUT.
11
Evergreen Boiler components

Part number 550-100-132/0715 3
STOP!! — Read before proceeding
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gas-fired water boiler — User’s Information Manual
Have this boiler serviced/
inspected by a qualified
service technician, at least
annually.
Failure to comply with the above
could result in severe personal
injury, death or substantial prop-
erty damage.
When calling or writing about the
boiler— Please have the boiler
model number from the boiler
rating label and the CP number
from the boiler cabinet.
• Should overheating occur or gas supply fail
to shut off, DO NOT turn off or disconnect electrical
supply to circulator. Instead, shut off the gas supply at
a location external to the appliance.
• Do not use this boiler if any part has been
under water. Immediately call a qualified service
technician to inspect the boiler and to replace any part
of the control system and any gas control that has been
under water.
Failure to adhere to the guidelines on this page can result in severe
personal injury, death or substantial property damage.
Boiler service and maintenance —
• To avoid electric shock, disconnect electrical
supply before performing maintenance.
• Toavoidsevereburns,allow boiler to cool before
performing maintenance.
• You must maintain the boiler as outlined in the
manual and have the boiler started up and ser-
viced at least annually by a qualified ser-
vice technician to ensure boiler/system reliability.
Boiler operation —
• Do not block flow of combustion or ventilation air to
boiler. This boiler is equipped with a control which
will automatically shut down the boiler should air or
vent be blocked. If vent or air blockage is easily ac-
cessible and removable, remove it. The boiler should
attempt to restart within an hour. If blockage is not
obvious or cannot be removed, have the boiler and
system checked by a qualified service technician.
Combustion air —
• DO NOT obstruct the combustion air intake or
expose the air intake to corrosive chemicals
(see next page).
Carbon monoxide detector —
• A carbon monoxide detector that is wired on the
same electrical circuit as the boiler is strongly recom-
mended.
Boiler water —
• Do not use petroleum-based cleaning or sealing
compounds in boiler system. Gaskets and seals in the
system may be damaged. This can result in substantial
property damage.
• Leaks in boiler or piping must be repaired
at once to prevent make-up water. Use this
boiler ONLY in a closed-loop system. Con-
tinual fresh make-up water will reduce boiler life.
Mineral buildup in heat exchangers reduces heat
transfer, overheats the materials, and causes failure.
Addition of oxygen carried in by make-up water can
cause internal corrosion.
• Do not add cold water to hot boiler. Thermal
shock can cause heat exchanger to crack.
Freeze protection fluids —
• NEVER use automotive or standard glycol antifreeze.
Use only freeze-protection fluids made for hydronic
systems. Follow all guidelines given by the antifreeze
manufacturer. Thoroughly clean and flush any re-
placement boiler system that has used glycol before
installing the new boiler.

Part number 550-100-132/0715
4
Prevent combustion air contamination
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gas-fired water boiler — User’s Information Manual
Combustion air contamination:
Ensure that the combustion air will not contain any of
the contaminants in Figure 1.
Combustion air supply openings or intake terminations
must NOT be near a swimming pool, for example.
Avoid areas subject to exhaust fumes from laundry facilities.
These areas will always contain contaminants.
Figure 1 Corrosive contaminants and sources
Products to avoid
Spray cans containing chloro/fluorocarbons
Permanent wave solutions
Chlorinated waxes/cleaners
Chlorine-based swimming pool chemicals
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning solvents found in
household laundry rooms
Adhesives used to fasten building products and other similar products
Excessive dust and dirt
Areas likely to have contaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas and establishments
New building construction
Air contamination
Common household and hobby products often contain
fluorine or chlorine compounds.When these chemicals
pass through the boiler, they can form strong acids in
the vent system or boiler. The acid can eat through
the vent or boiler wall, causing serious damage and
presenting a possible threat of flue gas spillage into
the building.
Please read the information on this page.
If the boiler combustion air inlet is
located in any area likely to cause
contamination, or if products which
would contaminate the air cannot be
removed, you must have the com-
bustion air and vent re-piped and
terminated to another location.
Contaminated combustion air will dam-
age the boiler, resulting in possible severe
personal injury, death or substantial
property damage.
Do not operate the EvergreenTM
boiler if its combustion air inlet is
located in a laundry room or pool
facility, for example. These areas will
always contain hazardous contaminants.

Part number 550-100-132/0715 5
Annual startup and general maintenance
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gas-fired water boiler — User’s Information Manual
OWNER MAINTENANCE (see the following pages for instructions)
BEGINNING OF SEASON
Contact your boiler service technician to inspect, service and start
up your boiler. You must have an annual start-up performed by
a qualified service technician to ensure reliable operation of the
boiler and system.
DAILY
• Check boiler area.
• Check air openings.
• Check pressure/temperature gauge.
• Verify boiler jacket door is securely closed.
MONTHLY
• Check vent piping.
• Check air piping.
• Check relief valve.
• Check condensate drain system.
• Check automatic air vents (if used).
• Check display date and time.
EVERY 6 MONTHS
• Check boiler piping (gas and water).
• Operate relief valve.
Follow the service and maintenance procedures given throughout this manual and in component literature
shipped with the boiler. Failure to perform the service and maintenance could result in damage to the boiler
or system. Failure to follow the directions in this manual and component literature could result in severe
personal injury, death or substantial property damage.
Figure 2 Service and maintenance schedules

Part number 550-100-132/0715
6
DAILY
Maintenance
Boiler must
be serviced and
maintained
Check boiler area
To prevent potential of se-
vere personal injury, death or
substantial property damage,
eliminate all materials dis-
cussed below from the boiler
vicinity. If contaminants are
found:
Remove products immediately
from the area. If they have been
there for an extended period,
call a qualified service techni-
cian to inspect the boiler and
vent system for possible dam-
age from acid corrosion.
If products cannot be removed,
immediately call a qualified
service technician to address
the problem.
1. Combustible/flammable materials — Do
not store combustible materials, gasoline
or any other flammable vapors or liquids
near the boiler. Remove immediately if
found.
2. Air contaminants — Products containing
chlorine or fluorine, if allowed to con-
taminate the boiler intake air, will cause
acidic condensate in the vent and boiler.
This will cause significant damage to the
vent and/or boiler if allowed to continue.
3. Read the list of potential materials listed
on page 4 of this manual. If any of these
products are in the room from which
the boiler takes its combustion air, they
must be removed immediately or the
boiler combustion air must be supplied
from outside.
4. See WARNING above.
Check air openings
1. Verify that combustion and ventilation
air openings to the boiler room and/or
building are open and unobstructed.
2. Verify that boiler vent discharge and air
intake are clean and free of obstructions.
Remove any debris on the air intake or
flue exhaust openings.
Check boiler pressure/
temperature gauge
1. Make sure the pressure reading on the
boiler pressure/temperature gauge does
not exceed 24 psig, if using a 30 psig
relief valve (typical installation). Higher
pressure may indicate a problem with the
expansion tank.
2. Contact a qualified service technician if
problem persists.
Verify that boiler jacket
door is securely closed
1. Visually inspect boiler jacket door to be
sure it is sealed all around its perimeter.
Verify that the two door latches are secure.
The boiler jacket door must be
securely fastened to the boiler
to prevent boiler from drawing
air from inside the boiler room.
Secure latches.
This is particularly important if
the boiler is located in the same
room as other appliances.
Failure to keep the door se-
curely fastened could result in
severe personal injury or death.
Contact your installer or tech-
nician immediately if the front
door does not close correctly or
if the door gaskets are damaged.
User maintenance procedures
The boiler should be inspected and started annually, at the beginning of the heat-
ing season, only by a qualified service technician. In addition, the maintenance
and care of the boiler designated on page 5 and explained on the following pages
must be performed to assure maximum boiler efficiency and reliability. Failure
to service and maintain the boiler and system could result in equipment failure,
causing possible severe personal injury, death or substantial property damage.
The following information provides detailed instructions for completing the
maintenance items listed in the maintenance schedule, page 5. In addition to
this maintenance, the boiler must be serviced and started up at the beginning of
each heating season by a qualified service technician.
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Part number 550-100-132/0715 7
MONTHLY
Maintenance
User maintenance procedures (continued)
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gas-fired water boiler — User’s Information Manual
Check vent & air piping
1. Visually inspect the flue gas vent piping and
air piping for any signs of blockage, leakage
or deterioration of the piping. Notify your
qualified service technician at once if you find
any problem.
Failure to inspect the vent/air system
as noted above and have them re-
paired by a qualified service techni-
cian can result in vent system failure,
causing severe personal injury or
death.
Check the relief valve
1. Inspect the boiler relief valve and the relief
valve discharge pipe for signs of weeping or
leakage.
2. If the relief valve often weeps, the expansion
tank may not be working properly. Immedi-
ately contact your qualified service technician
to inspect the boiler and system.
Check the condensate drain
system
1. While the boiler is running, check the dis-
charge end of the condensate drain tubing
and the open top of the condensate tee at the
boiler (see Figure 3 for locations). Make sure
no flue gas is escaping from the condensate
drain tubing or tee by holding your fingers in
front of the opening.
2. If you notice flue gas escaping, this indicates
a dry condensate drain trap. See step 4 for
procedure to fill trap. Call your qualified
service technician to inspect the boiler and
condensate line and refill the condensate trap
if problem persists regularly.
Under some circumstances an Ul-
tra vent system may not produce
enough condensate to keep the con-
densate trap full of liquid. If the trap
is not full, small amounts of flue
products can be emitted into the
boiler room through the condensate
drain line or tee. Follow procedure
below to fill trap.
3. Verify that the condensate drain line is unob-
structed by slowly pouring water into the top
of the PVC tee on the side of the boiler. The
water should run out the end of the conden-
sate drain line. If the water does not run out,
call your qualified service technician to inspect
the boiler and clean or replace the condensate
drain line.
4. To fill the condensate trap, if necessary, tem-
porarily plug the end of the condensate drain
line. Then slowly pour water into the ½ inch
plastic tee on boiler right side. Pour until water
fills drain line, then overflows into the boiler
trap tubing. When water fills up to top of ½
inch tee, stop filling. Remove temporary plug
from end of condensate drain line.
Check automatic air vents (if
used — automatic air vents must be
used with diaghragm-type expansion
tanks only)
1. See Figure 4.
2. Remove the cap from any automatic air
vent in the system and check operation by
depressing valve “B” slightly with the tip of
a screwdriver.
Scald hazard — Water from air
vent may be very hot.Avoid contact
to prevent possible severe personal
injury.
3. If the air vent valve appears to be working
freely and not leaking, replace cap “A”, twist-
ing all the way on.
4. Loosen cap “A” one turn to allow vent to
operate.
5. Have vent replaced if it does not operate
correctly.
Check display date and time
1. Observe the date and time shown on page 11
the Weil-McLain logo on the control display.
2. If the date or time is incorrect, follow the
instructions in Figure 8, page 11 to access
the USER MENU and change the date and/
or time settings.
3. Keeping the date and time current makes sure
the control can record problems accurately.
Hose
clamps
Figure 3 Boiler condensate trap
Figure 4 Automatic air vent
85036
A
B

Part number 550-100-132/0715
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Check boiler piping
1. Check all gas lines and smell for gas
odors. Perform gas leak inspection per
steps 1 through 7,Operating Instructions,
page 9. If gas odor or leak is detected,
immediately shut down boiler following
procedures on page 9. Call a qualified
service technician.
2. Visually inspect for water leaks around
all piping, circulators, relief valves and
other fittings.
3. Immediately call a qualified service tech-
nician to repair any leaks.
Have leaks fixed at once by a
qualified service technician.
Continual fresh makeup water
will reduce boiler life. Minerals
can build up in the heat ex-
changer, reducing heat transfer
and causing overheating. Heat
exchanger failure can occur.
Do not use petroleum-
based cleaning or sealing
compounds in boiler system.
Severe damage to boiler and
system components can occur,
resulting in possible severe
personal injury, death or sub-
stantial property damage.
Operate boiler relief valve
1. Before proceeding, verify that the relief
valve outlet has been piped to a safe place
of discharge, avoiding any possibility of
scalding from hot water.
2. Read the boiler pressure/temperature
gauge to make sure the system is pressur-
ized. Record pressure in system to refer to
after checking relief valve
3. Lift the relief valve top lever slightly, al-
lowing water to relieve through the valve
and discharge piping.
4. If water flows freely, release the lever and
allow the valve to seat. Watch the end of
the relief valve discharge pipe to ensure
that the valve does not weep after the line
has had time to drain. If the valve weeps,
lift the seat again to attempt to clean the
valve seat. If the valve continues to weep
afterwards, contact your qualified service
technician to inspect the valve and sys-
tem.
5. If water does not flow from the valve
when you lift the lever completely, the
valve or discharge line may be blocked.
Immediately shutdown the boiler, fol-
lowing the lighting instructions on the
inside jacket top. Call your qualified
service technician to inspect the boiler
and system.
To avoid water damage or scald-
ing due to valve operation, a
metal discharge line must be
connected to relief valve out-
let and run to a safe place of
disposal. This discharge line
must be installed by a quali-
fied heating installer or ser-
vice technician in accordance
with the instructions in the
EvergreenTM Boiler Manual.
The discharge line must be ter-
minated so as to eliminate pos-
sibility of severe burns should
the valve discharge.
6. Verify and compare boiler pressure re-
turns to recorded value before checking
the relief valve. If pressure does not return
to proper value, call a qualified heating
installer or service technician.
User maintenance procedures (continued)
EVERY
6 MONTHS
Maintenance
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gas-fired water boiler — User’s Information Manual

Part number 550-100-132/0715 9
OPERATING INSTRUCTIONS
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gas-fired water boiler — User’s Information Manual
Figure 5 Operating instructions (see page 2 for location of manual gas valve)

Part number 550-100-132/0715
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The Evergreen control display
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gas-fired water boiler — User’s Information Manual
Figure 6 EvergreenTM boiler control display states

Part number 550-100-132/0715 11
The Evergreen control display (continued)
Date and time
1. Set month, date, year, hour and
minutes.
2. Keeping the date and time current
makes sure the control can record
problems accurately.
Figure 7 EvergreenTM boiler control display LOCKOUT SCREEN — screen turns red when boiler locks out —
highlight and select MANUAL RESET to reset boiler as shown below.
BOILER STATUS screen
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gas-fired water boiler — User’s Information Manual
Resetting faults:
1. During a fault, the status will change to LOCKOUT and the
Time & Date line will alternate with the fault name. The line
MANUAL RESET will appear on the Homeowner screen.
2. Select MANUAL RESET to reset fault condition.
3. The MANUAL RESET screen will indicate whether the fault
was a manual or automatic reset, the fault name,and the time
and date it occurred.
4. Call for service if fault continues.
Figure 8 EvergreenTM boiler control display USER Menu — (set date and time, reset faults).

Part number 550-142-123/0513
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gas-fired water boiler — User’s Information Manual