Weil-McLain Ultra Manual page 12

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gas fired water boiler
Prepare boiler
Prepare boiler for wall mounting
1. Remove the jacket front panel. This will simplify lifting and han-
dling the boiler when mounting.
2. When piping will be routed out the top of the boiler, no special
preparation is needed other than that given in this manual.
3. Ultra-80 to -230 only: To route the piping through the bottom of
the boiler enclosure:
a. Remove knockouts from bottom piping penetrations as shown
in Figure 8, page 11.
b. Insert grommets into the penetration holes as shown.
Install wall-mount bracket
1. Locate studs.
2. Place the wall-mount bracket on the wall, using a level to align
correctly.
3. Place the bracket so the mounting slots are centered over the
studs.
4. Level the bracket and trace the outline of the screw slots with a
pencil.
5. Remove bracket and drill holes 1/4" diameter by 3 inches deep,
centered on the screw slot outlines. (For metal stud walls, using
3/16" toggle bolts, drill required clearance holes.)
6. See Figure 9, page 11. Position bracket on wall. Insert and loosely
tighten the two lag screws (or toggle bolts for metal studs).
7. Level the bracket. Then tighten screws securely. For drywall or
plaster lathe installations, avoid tightening so much that brackets
dig into wall surface.
Place boiler on bracket
1. Measure 30 / inches below the bottom edge of the wall-mount
3
4
bracket for Ultra-80 to -230 (35
or place a piece of masking tape on the wall with its top edge even
with the 30-inch mark. (This line, or tape, will indicate whether the
boiler has been properly seated onto the wall-mount bracket.)
2. Obtain assistance to lift the boiler into position (see
ure 10, page 11):
a. Lift the boiler high enough that its rear bracket will be above
the wall-mount bracket.
b. Let the rear of the boiler slide against the lag screw heads as
you lower the boiler into place.
c. When the brackets are engaged correctly, the bottom of the
boiler enclosure will be at or near the pencil line, or tape, you
applied in step 1.
d. If the boiler does not slide down close to the mark, or tape,
adjust until the brackets properly engage.
Piping through the bottom of the boiler
Use two wrenches when tightening piping at boiler,
using one wrench to prevent the boiler pipe from turn-
ing. Failure to support the boiler piping connections to
prevent them from turning could cause damage to boiler
components.
1. Use the following procedure to arrange piping through the bot-
tom of the boiler.
12
— Boiler Manual
(continued)
/ " for Ultra-310). Strike a line
5
8
Figure 11
Bottom-piping configuration only (Ultra-80 to
-230 only)
1. See Figure 11.
2. Remove pipe caps from bottoms of supply, return and
Fig-
gas lines to route piping through bottom.
3. Install:
a. 1" pipe cap on top of return pipe (
item 7).
b. ½" pipe cap on top of gas line (
c. 1" x 1" x ¾" tee (
d. ¾" steel elbow (item 5), relief valve (item 6).
e. 1" x 1/8" bushing (item 9).
f. Air vent (item 10) on top of the supply pipe as
shown.
4. See instructions beginning on
piping. Connect piping to:
a. 1" NPT male boiler return (
b. 1" NPT male boiler outlet (item 3).
c. ½" NPT male gas (item 2).
DO NOT use automatic air vent on systems
with closed-type expansion tanks. Instead,
replace item 10 above with a line to the expan-
sion tank.
Figure 11,
Figure 11, item 8)
Figure 11, item 4).
page 14 to connect boiler
Figure 11, item 1).
Part number 550-100-066/0608