Figure 7
Install piping components required for
hydrostatic test (
see legend below)
Part number 550-100-305/0118
11
AquaBalance
TM
W
ALL
M
OUNT
GAS
-
FIRED
WATER
BOILER
—
Boiler Manual
1. Boiler Supply (outlet) connection, (male,
1” NPT
on WMB-80/120, 1” NPT on WMB-155).
2. Boiler Return (inlet) connection, (male,
1” NPT
on WMB-80/120, 1” NPT on WMB-155).
Recommend Near Boiler Piping to be 1-1/4” NPT or larger for WMB-155. Bushing 1” x 1-1/4” NPT at Supply (outlet) and Return
(inlet) not shown.
(
field supplied
by installer
)
3. Boiler relief valve, shipped loose with boiler —
DO NOT mount relief valve until AFTER hydrostatic testing
.
3a.
TEMPORARILY ONLY —
Insert a ¾” NPT plug in the relief valve tapping of the reducing tee.
This MUST BE REMOVED
after the test and the relief valve mounted here
.
4. Pressure/temperature
gauge,
(
field supplied)
by installer, (Optional – can use boiler gauge).
5a. Reducing tee, 1” x 1” x ¼” on WMB-80/120, NPT, 1
-1/4
” x 1
-1/4
” x ¼” on WMB-155
(
field supplied)
by installer .
5b. Tee, NPT, 1” x 1” x ¾” on WMB-80/120, NPT, 1
-1/4
” x 1
-1/4
” x ¾” on WMB-155
(
field supplied)
by installer.
6. Nipple, NPT, 1” x close on WMB-80/120, NPT, 1
-1/4
” x close on WMB-155
(
field supplied)
by installer.
7. Nipple, NPT, 1” x close on WMB-80/120, NPT, 1
-1/4
” x close on WMB-155
(
field supplied)
by installer.
8. Isolation valve on supply connection,
(
field supplied)
by installer (1” NPT
on WMB-80/120, 1-1/4” NPT on WMB-155).
9. Isolation valve on return connection,
(
field supplied)
by installer (1” NPT
on WMB-80/120, 1-1/4” NPT on WMB-155).
10. ¾” NPT boiler drain valve,
(
field supplied)
by installer — after hydrostatic testing, move drain valve to lowest point on the return piping
if not already there.
3 Prepare boiler
continued
Figure 6
Install pipe fittings for relief valve and pressure/
temperature gauge —
DO NOT mount relief
valve until AFTER hydrostatic testing
(see
legend below)
Boiler Return
(inlet)
Boiler Supply
(outlet)
2
3
1
10