Installation Guide

Part number 550-100-066/0608
g a s -f i r e d w at e r b o i l e r — Boiler Manual
104
 Dimensional data
Notes
1
Boiler supply and return tappings are both 1” NPT (Ultra-80/105/155/230) or 1¼” NPT (Ultra-310).
See page 15 for recommended piping sizes.
Wall-hung boiler option — water piping and gas pipe can be routed through bottom of enclosure using wall-mounting kit. See
page 6 for mounting instructions.
2
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-310.
3
Relief valve is shipped loose.
See page 14 for mounting details. Relief valve mounts on supply pipe off of supply tee and ¾” street elbow as shown.
Dimensions