GSA
Gas-Fired Steam Boilers –
Boiler Manual
6
Part Number 550-110-738/0703
Air openings
continued
2
Prepare boiler
Placement and setup
Place boiler/crate near position
1.
Leave boiler in crate and on pallet
until installation site is
ready.
2. Move entire crate and pallet next to selected location.
3. Remove crate.
Leave boiler on pallet.
4. Unbolt boiler from pallet.
5. Remove boiler from pallet.
Inspect orifices and burners
1. Remove front jacket door. Remove base access panel (see
Figure 16, item 14, page 26).
2. Check for correctly-sized manifold orifices. See Table 3 for sizing.
(The orifice size is stamped on the orifice spud barrel.)
Correctly-sized manifold orifices must be used. Failure
to do so will result in severe personal injury, death or
substantial property damage.
3. Level and straighten burners.
Burners must be properly seated in slots in burner
rest with their openings face up. Main burner orifices
must inject down center of burner. Failure to properly
seat burners will result in severe personal injury,
death or substantial property damage.
4. Reinstall base access panel.
Do not operate boiler without access panel secured
in place. Failure to comply could cause momentary
flame rollout on ignition of main flame, resulting in
possible fire or personal injury hazard.
1
Prepare boiler location
continued
Exhaust fans and air movers
The appliance space must never be under a negative pressure.
Always provide air openings sized not only to the dimensions
required for the firing rate of all appliances, but also to handle the air
movement rate of the exhaust fans or air movers using air from the
building or space.
Motorized air dampers
If the air openings are fitted with motorized dampers, electrically
interlock the damper to:
•
Prevent the boiler from firing if the damper is not fully open.
•
Shut the boiler down should the damper close during boiler
operation.
To accomplish this interlock, wire an
isolated contact (proving the
damper open) in series with the thermostat input to the boiler. The
boiler will not start if this damper is closed, and will shut down should
damper close during operation.
Table 3
Manifold orifice sizing
Pressure test
Perform hydrostatic pressure test
Pressure test boiler before attaching water or gas piping or electrical
supply.
Prepare boiler for test
1. Plug tappings or openings.
2. Do not use gauge supplied with boiler for pressure testing. Install
gauge with appropriate range.
Fill and pressure test
1. Fill boiler with water. Vent all air. Test boilers between 45-50 psi.
Do not leave boiler unattended. A cold water fill could
expand and cause excessive pressure resulting in
severe personal injury, death or substantial property
damage.
2. Check for maintained gauge pressure for more than 10 minutes.
Visually check for leaks if gauge pressure drops.