Ultra electronic -155 - Manual (Page 43)

GAS
-
FIRED WATER BOILER SERIES
2 — Boiler Manual
Part number 550-100-026/0404 43
10
Dimensions
1 . Boiler supply and return tappings are both 1" NPT (Ultra-
80/105/155/230) or 1¼" NPT (Ultra-310). See pages 14
through 18 for recommended system supply and return
piping sizes. Wall-hung boilers: water piping and gas pipe
can be routed through bottom of enclosure using wall-
mounting kit.
2. Boiler circulator is shipped loose. Circulator may be
mounted on either boiler supply or return piping. Both 1"
Notes
and 1¼" circulator flanges are shipped with boiler on Ultra-
80/105/155/230. Both 1¼" and 1½" circulator flanges are
shipped with boiler on Ultra-310.
3 . Relief valve is shipped loose. See page 11 for mounting
details. Relief valve mounts on supply pipe off of supply
tee and ¾" street elbow as shown.