Prepare Boiler - Weil-McLain Ultra Manual

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gas fired water boiler

Prepare boiler

Vent and air piping (page 31)
1. The Ultra boiler requires a special vent system, designed for pres-
surized venting. Ultra boilers are rated ANSI Z21.13 Category IV
(pressurized vent, likely to condense in the vent). See instructions
beginning on page 31.
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 contami-
nation on page 30 when considering vent/air termination.
3. Vent and air must terminate near one another and may be vented
vertically through the roof or out a side wall. You may use any of
the vent/air piping methods covered in this manual. Do not attempt
to install the Ultra 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 30.
Remove boiler from crate
Cold weather handling — If boiler has been stored in a very
cold location (below 0°F) before installation, handle with care
until the plastic components come to room temperature.
5. The Ultra boiler is generally easier to handle and maneuver after
removing from crate.
6. After removing outer shipping carton from boiler, REMOVE jacket
front door by loosening two knurled-head screws at lower front.
Removing the door will prevent possible damage to the door dur-
ing handling.
7. To remove boiler from pallet (after removing jacket front door):
a. Remove the lag screws securing the shipping brackets.
b. Unscrew the two rear boiler legs and remove the shipping
brackets.
c. Replace legs.
d. Discard the cardboard protector insert on the rear of the
boiler.
Do not drop boiler or bump jacket on floor or pallet.
Damage to boiler can result.
Part number 550-100-066/0608
— Boiler Manual
Prepare boiler for propane
(when required)
Propane operation
Ultra boilers must be converted
for propane operation unless spe-
cifically manufactured for propane
Propane-ready boilers have suffix "LP"
after the model number. All other boilers
require conversion for propane opera-
tion.
Ultra-80
natural gas boilers require in-
stallation of a burner in addition to an
DO NOT
orifice change. use the instruc-
tions in this manual for these boilers.
Use only the instructions included in
the special-order conversion kits (See
Figure 100, page 92).
Converting existing natural gas-fired
boiler for propane
— For a boiler
already installed, you must turn off gas
supply, turn off power and allow boiler
to cool before proceeding. You must also
completely test the boiler after conver-
sion to verify performance and start up
the boiler following instructions begin-
ning on page 70 of this manual.
High altitude installations
stallations more than 5,500 feet above sea
level, obtain the high altitude propane
orifice kit. See Figure 100, page 92.
Verify orifice siz e
— See Fig-
ure 5, page 10. Verify when installing
that the orifice size marking matches
boiler size. Use only the special-order
high altitude
orifice for altitudes above
5,500 feet.
Failure to comply could result in severe
personal injury, death or substantial
property damage.
.
— For in-
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