Boiler Hydrostatic Test - Weil-McLain Evergreen EVG 220 Manual

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gas
Wall-mounting the
boiler
(continued)
8. If upper spacer board is used, install the lower
spacer board as shown in Figure 5, page 9.
9. Once the wall-mount bracket is installed,
measure 35" below the bottom edge of the
bracket and strike a line or place a piece of
masking tape with the top edge even with the 35"
mark. This line will indicate if the boiler has been
properly seated in the hanging bracket.
10. Obtain assistance to lift the boiler into
position.
The boiler is heavy, and requires
two people to lift and place. Wear
non-slip rubber gloves to prevent pos-
sibility of cuts from sheet metal edges.
The jacket door can be left on boiler,
but boiler must ONLY be lifted from
the bottom and rear of the sheet metal
housing, NOT from the pipes or any
plastic part.
11. Lift the boiler high enough that its rear bracket
(item 4, Figure 5, page 9) will be above the wall-
mount bracket.
12. Slide the boiler down so that the back of the
cabinet is in contact with the lag screw heads until
the bottom of the boiler is below the line or tape
placed in Step 9. If necessary, move boiler left or
right until the tabs on the wall-mounting bracket
insert into the back of the cabinet.
When mounting the boiler, use the
method described in Step 9 to ensure
the cabinet is fully seated on wall
mounting bracket. If the bracket is
not fully engaged, the boiler could fall.
Failure to comply could result in severe
personal injury, death, or substantial
property damage.
– 10 –
-
fired water boiler
— 220/299/300/399 Boiler Manual

Boiler hydrostatic test

DO NOT install a relief valve with a pressure higher
than 80 PSIG
setting for the Evergreen
prevent the relief valve from operating as needed, resulting
in possibility of severe personal injury, death or substantial
property damage.
Use two wrenches when tightening any pipe connec-
tion to the boiler
turning could damage pipes, resulting in possible severe
personal injury, death or substantial property damage.
Hydrostatic pressure test
Pressure test the boiler before permanently attaching water or gas piping
or electrical supply.
Install pipe fittings for relief valve and P/T
gauge
1. Install the (Item 5a) two 1½" reducing tee (EVG 220 model) or two
1½" tees (EVG 299/300 & 399 models), and close nipple shipped
loose with the boiler, located and oriented as shown in Figure 6 and
Figure 7, page 11, on the boiler supply and return.
2. Install the (Item 5b) one 1¼" NPT tee on EVG 220 or 1½" NPT tee on
EVG 299/300/399) and close nipples shipped loose with the boiler,
located and oriented as shown in Figure 6, page 11 on the boiler supply.
DO NOT install the relief valve until after the hydrostatic
test
. Temporarily install a ¾" pipe plug in the relief valve
location as directed in these instructions. The plug must be
removed after the test.
3. Apply pipe dope to all fittings sparingly.
Install fittings and valves required for hydro-
static testing
1. The following piping components (supplied by installer) are required
for the test configuration:
a. Two isolation shut-off valves (1¼" NPT on EVG 220; 1½" NPT on
EVG 299/300/399).
b. 1¼" NPT or 1½" NPT pipe nipples as shown in Figure 7, page 11.
c. ¾" NPT pipe plug.
TEMPORARILY
2. insert a ¾" NPT pipe plug in the relief valve tapping.
After the hydrostatic test, this plug must be removed and the relief
valve must be installed.
3. Install Pressure/Temperature gauge into the tee (Item 5b) as shown in
Figure 7, page 11.
Fill and pressure test
1. See Figure 6, page 11 for use with the following instructions.
2. CLOSE boiler drain valve (item 12). Connect a hose to fresh water
supply and to the drain valve.
3. Place a bucket under the ends of Isolation shut-off valves (item 10 and
item 11) to catch water drippage.
4. CLOSE isolation valve 11. (Return)
5. OPEN top isolation valve 10. (Supply)
6. Slowly open boiler drain valve (item 12) and fresh water supply to fill
boiler with water. The boiler and internal piping will fill quickly because
of the low water content.
. This is the maximum allowable relief valve
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boiler. Failure to comply could
. Failure to prevent the boiler pipes from
Part number 550-100-131/0120