Ultra Boiler Manual

Part number 550-100-440/0122
136
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Figure 137 Dimensional data
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Notes
1
Boiler supply and return tappings are both 1” NPT (Ultra-80/105/155/230) or 1¼” NPT (Ultra-299/399).
See page10 for recommended piping sizes.
Wall-hung boiler option — water piping and gas pipe can only be routed through top of enclosure using wall-mounting kit. See
page5 for mounting instructions.

Boiler circulator is shipped loose.
Circulator must be mounted in the return piping.
Both 1” and 1¼” circulator anges are shipped with boiler on Ultra-80/105/155/230.
Both 1¼” and 1½” circulator anges are shipped with boiler on Ultra-299 and Ultra-399.

Relief valve is shipped loose.
See page9 for mounting details. Relief valve mounts on supply pipe o of supply tee and ¾” street elbow as shown.