Weil-McLain 88 - Manual (Page 11)

"OILER
11 Part No. 550-100-068/1009
Perform hydrostatic pressure test
Prepare boiler and test:
See 1. Figure 10 and Figure 11 for tapping locations. Install:
Boiler drain (not furnished). a.
Water pressure gauge — for test only. Be sure gauge can handle b.
test pressure — see step 3.
Air vent in upper tapping (K).
c.
Plug remaining tappings.
2.
Do not pressure test with any control installed. Damage
to control can occur due to overpressure.
Fill boiler. Vent 3. all air. Pressure test at least 10 minutes at a pressure
not less than the following:
3TEAM a. boiler: "ETWEEN .
7ATER b. boiler: 
PRESSURE (MAWP) stamped on the boiler nameplate, located
on boiler jacket front panel.
Do not exceed above test pressures by more than 10
psig.
Do not leave boiler unattended. Cold water fill could
expand and cause excessive pressure, resulting in severe
personal injury, death or substantial property damage.
Check for maintained gauge pressure and leaks. Repair if found. 4.
Leaks must be repaired at once. Failure to do so can dam-
age boiler, resulting in substantial property damage.
Do not use petroleum-based cleaning or sealing com-
pounds in boiler system. Severe damage to system
components can result, causing substantial property
damage.
Drain boiler and remove air vent, boiler drain and gauge. Remove 5.
plugs from tappings that will be used for controls and accesso-
ries.
Boiler tapping locations and sizes (see &IGURE Figure 11)
,OCATION 3IZE 3TEAM 7ATER
A 2" Steam relief valve and/or
Skim tapping High limit
Manual reset limit
B 2" Steam relief valve Water relief valve
L 1" Secondary probe LWCO Not used — Plug
C1 & C2 1" Low water cut-offs Alternate low water cut-offs
C1 — Combination high and low
limit control
D1 & D2 1" Alternate low water cut-offs Firing rate temperature
control (when used)
Low water cut-offs
E1 & E2 ½" Gauge glass —
F1 & F2 6 " Try cock tappings —
G ¾" Pressure limit control,
Pressure operating control and
pressure gauge,
Firing rate pressure control
(when used) Combination pressure–
temperature gauge
H ¾" Boiler drain (see Figure 17,
page page 15, for system blow-
off (drain) valve locations and
sizes Boiler drain
K 1" — Piping to compression tank or
automatic air vent
Boiler tappings &IGURE