Water Piping - Weil-McLain Ultra Series 3 Quick Start Manual

2 2
a
Typical piping, zone-valve zoning
The circulator supplied with the boiler (
used only in the boiler secondary loop as shown in the
schematic above and in the manual. System (
circulators and DHW circulator (
the installer. Above right is a typical installation, showing
the near-boiler piping and connection to the system.
RIGHT
D o n
o t e x
1 2 i n c e e d
c h e s
a p a r
t

WATER PIPING

(see boiler manual for details)
b
c
) must be
a
) and zone
b
) must be supplied by
c
INSTALLING THE
PRIMARY/SECONDARY TEES
The near-boiler piping must be
primary/secondary as shown above
and left, with the boiler loop piping
entering the tees in the branch
connection.
DO NOT connect boiler piping to the
tee through connections as shown
at right. The system will not work
correctly this way.
S e n s
o r
S y s t
e m
a
Boiler loop piping must be sized to the minimums
listed in the boiler manual. Using smaller piping will
cause performance problems.
• Ultra-80 / Ultra-105
• Ultra-155 / Ultra-230
• Ultra-299 / Ultra-399
MATERIAL CHECKLIST
RETURN TO PAGE 2
Do not exceed
12 inches apart
S e n s
o r
b
c
G a s
. . . . . use 1" or larger
. . . . . use 1¼" or larger
. . . . . use 1½" or larger
WRONG
S y s t
e m
D H W
D H W