Weil-McLain CGa - Manual (Page 11)

User’s Information Manual
11 Part Number 550-110-592/0408
Operate boiler relief valve
❏ Service every 6 months . . . . . . . . .
To avoid water damage or scalding
due to valve operation, a metal
discharge line must be connected
to relief valve outlet and run to a
safe place of disposal. This discharge
line must be installed by a qualified
heating installer or service technician
in accordance with the instructions
in the
Boiler Manual .
The discharge line must be
terminated so as to eliminate
possibility of severe burns should
the valve discharge.
1. Before proceeding, verify that the relief valve outlet
has been piped to a safe place of discharge, avoiding
any possibility of scalding from hot water.
. Read the boiler pressure/temperature gauge to make
sure the system is pressurized.
. Lift the relief valve top lever slightly, allowing water
to relieve through the valve and discharge piping.
. If water flows freely, release the lever and allow
the valve to seat. Watch the end of the relief valve
discharge pipe to ensure that the valve does not
weep after the line has had time to drain. If the valve
weeps, lift the seat again to attempt to clean the
valve seat. If the valve continues to weep afterwards,
contact your qualified service technician to inspect
the valve and system.
. If water does not flow from the valve when you
lift the lever completely, the valve or discharge line
may be blocked. Immediately shutdown the boiler,
following the instructions on the inside jacket top
Lighting Instructions. Call your qualified service
technician to inspect the boiler and system.
Figure 9 Gauge glass Clean gauge glass
❏ Service periodically
continued
. . . . . . .
Boiler pressure must be low to eliminate potential of
severe burns.
Normal waterline on a steam boiler is halfway up gauge
glass. See Figure . Clean when needed.
1. Close lower gauge cock.
. Open pet cock.
. Open lower gauge cock and allow a small amount
of water to flush out through open pet cock.
. Close pet cock.
. Open lower gauge cock.
. If gauge glass breaks, close both gauge cocks and call
a qualified service technician to replace gauge glass.
Do not replace with thin glass tubing.