Weil-McLain GOLD GV 3 Series Manual page 60

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Service & maint. —
Annual start-up —
check/test
60
GOLD GV Water boiler series 3 — manual GOLD GV Water boiler series 3 — manual GOLD GV Water boiler series 3 — manual
GOLD GV Water boiler series 3 — manual GOLD GV Water boiler series 3 — manual
Gas piping
1. Sniff near floor and around boiler area for any indication of a
2.
Test gas piping using bubble test,
of a leak.
Cold fill and operating pressures
1. While the system is cold, note the
gauge. Verify that cold fill pressure is correct.
2. as the boiler and system heat up to ensure pressure rise is normal. Too
Watch the pressure
high a rise would indicate a waterlogged or undersized expansion tank.
Temperature mixing system
1. Carefully check the
temperature
boiler jacket and on the
return pipe inside the boiler jacket
boiler sections. You may do this with a surface pyrometer or by lightly touching the piping
with your fingers.
To avoid potential of severe burn —
. Use a light touch only. Return piping may heat up quickly.
pipes
2. The temperature of the water entering the boiler sections should quickly heat up to about
, being considerably hotter than the return water from the system.
130 °F
3. This is accomplished with the
(page 2, item ) takes hot water from the boiler supply outlet and blends it with return water.
7
The System circulator (page 2, item
entering the sections.
4. If the temperature mixing system
sure they are flowing water. If the circulators are operating normally but the temperature
mixing system does not maintain water at the enterance to the boiler sections at 130 °F, you
may need to replace the boiler control module or water temperature sensor (page 2, item
Air vents and air elimination
1. Inspect automatic air vents (if used). Also inspect air
separators to ensure they are operational.
2. The cap must be unscrewed one turn to allow air to
escape.
3. See Figure 28. If the air vent is leaking, remove cap
and briefly push valve and then release to clean the
B
valve seat.
4. Replace cap by twisting all the way onto valve
A
and then unscrewing one turn.
Limit controls and cutoffs
1. Inspect and test the boiler limit control. Verify
operation by turning control set point below boiler
temperature. Boiler should cycle off. Return dial to
original setting.
2. Inspect and test additional limit controls or low water
cutoffs installed on system.
annual start-up
per Section of this manual, if there is any indication
V
on the boiler pressure/temperaure
pressure reading
of the
system return piping
Do not rest hands on or grasp
two internal boiler circulators
) slows down to aid in raising the return temperature
6
does not work correctly, check the two circulators to be
Figure 28
A
B
A
B
85036
Part number 550-141-850/0699
(cont.)
.
gas leak
as it passes through the
just before it enters the
. The Bypass circulator
).
8
Automatic air vent