5
Gas piping
Connecting gas supply piping
1.Remove jacket front panel and refer to Figure 15 to pipe gas to boiler.
a.Install ground joint union for servicing, when required.
b.Install manual shutoff valve in gas supply piping outside boiler jacket when required by local codes or utility requirements.
c.In Canada — When using manual main shutoff valve, it must be identified by the installer.
2.Wall-mounted boilers
a.Refer to separate Ultra Boiler
b.Gas connection may enter from the bottom of boiler as explained in the
4.Purge all air from gas supply piping.
5.Before placing boiler in operation, check boiler and its gas connection for leaks.
a.Close manual main shutoff valve during any pressure testing at less than 13" w.c.
b.Disconnect boiler and gas valve from gas supply piping during any pressure testing greater than 13" w.c.
Do not check for gas leaks with an open flame — use bubble test. Failure to use bubble test or check for gas leaks can cause severe personal injury, death or substantial property damage.
3.Support piping with hangers, not by boiler or its accessories.
6.Use pipe dope compatible with propane gases. Apply sparingly only to male threads of pipe joints so that pipe dope does not block gas flow.
Failure to apply pipe dope as detailed above
Figure 15 Connect gas supply pipingcan result in severe personal injury, death or substantial property damage.
DO NOT adjust or attempt to measure gas valve outlet pressure. The gas valve is factory-set for the correct outlet pressure. This setting is suitable for natural gas and propane, requiring no field adjustment. Attempting to alter or measure the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death or substantial property damage.
Ultra boilers are shipped ready to fire natural gas ONLY. (Exception: Ultra-80LP is propane-ready.) You must install the propane orifice if the boiler will be connected to propane. See page 9. Failure to comply could result in severe personal injury, death or substantial property damage.
Use two wrenches when tightening gas piping at boiler, using one wrench to prevent the boiler gas line connection from turning. Failure to support the boiler gas connection pipe to prevent it from turning could damage gas line components.
Part number | 21 |
