•Installation •
VIIb Start-up — preparation (cont.)
Verify gas/air orifice plate
The proper orifice plate must be used. Failure to do so will cause severe personal injury, death or substantial property damage.
1.Remove the jacket front panel.
2.Read the boiler size written on the gas/air orifice label tab, verifying the correct size. See Figure 5b for details.
3.The orifice plate must be plain aluminum for natural gas. For propane gas, the exposed tab of the plate should be red.
4.Replace the orifice plate if necessary, following the guidelines of Section IIc in this manual.
Check for gas leaks
Before starting the boiler, and during initial operation, smell near the floor and around the boiler for gas odorant or any unusual odor. Do not proceed with
Propane boilers only — Your propane supplier mixes an odorant with the propane to make its presence detectable. In some instances, the odorant can fade, and the gas may no longer have an odor. Before start- up (and periodically thereafter), have the propane supplier verify the correct odorant level in the gas. Failure to comply could result in severe personal injury, death or substantial property damage.
Fill the system with water
1.Close manual and automatic air vents and boiler drain cock.
2.Fill to correct system pressure. Correct pressure will vary with each application. Typical cold water fill pressure for a residential system is 12 psi.
3.Purge air from system:
a.Connect a hose to the purge valve (shown in suggested piping illustrations in this manual). Route hose to an area where water can drain and be seen.
b.Close the boiler or system isolation valve between the purge valve and fill connection to the system.
c.Close zone isolation valves.
d.Open
e.Open purge valve.
f.One zone at a time, open the isolation valves. Allow water to run through the zone, pushing out the air. Run until no noticeable air flow is present. Close the zone isolation valves and proceed with the next zone. Follow this procedure until all zones are purged.
g.Close the
h.After the system has operated for a while, eliminate any residual air by using the manual air vents located throughout the system.
i.Relieve any residual air in the boiler piping using the manual air vent (page 3, item i) installed on the boiler supply piping.
j.If purge valve is not installed, open manual air vents in system one at a time, beginning with lowest floor. Close vent when water squirts out. Repeat with remaining vents.
4.Open automatic air vent (diaphragm- or bladder- type expansion tank systems only) one turn.
Inspect system water piping
After filling the boiler and system with water, inspect all piping throughout the system for leaks. If found, repair immediately. Repeat this inspection after the boiler has been started and the system has heated up.
Leaks must be repaired at
once. Failure to do so can damage the boiler, resulting in substantial property damage.
Do not use
cleaning or sealing compounds in boiler system. Severe damage to boiler will occur, resulting in substantial property damage.
Part number | 43 |
