ITEMS
✔
Boiler loop piping and components
NOTICE — The piping must be installed as primary/secondary, with
the boiler on its own loop as shown in the Ultra boiler manual and
in this guide. (This requirement is met when using optional Easy-up
Manifolds.) Use the pipe sizes listed below.
Pipe, valves and fittings:
(including flow/check
valve)
Ultra-80, 105
Ultra-155, 230
Ultra-299, 399
1” or larger
1¼” or larger
1½ or larger
Optional Ultra Easy-Up Manifolds (com-
plete, pre-assembled boiler loop piping;
circulator shipped loose with boiler) —
1¼” for Ultra-80/-105; 1½” for -155 to -399
Part numbers:
1¼” (383-500-649)
1½” (383-500-661)
System and zone piping
System circulator and zone circulators (or zone valves)
Pipe, valves and fittings for system and zone piping
Air separator and expansion tank
Fresh water make-up piping and components
DHW piping
DHW circulator
Pipe, valves and fittings (including flow/check valve)
Other piping
Gas piping, valves and fittings; ground-joint union and
manual shut-off valve for boiler gas connection; gas pres-
sure regulator, if required
¾” pipe and elbows for relief valve discharge piping
Condensate line
Pipe or tubing for condensate line — ½” PVC or CPVC pipe;
or 5/8” I.D. tubing
Condensate neutralizing kit when required
Weil-McLain part number 383-500-631
Condensate pump (required when condensate cannot
drain by gravity to an appropriate location)
Water treatment
Sentinel X100 inhibitor is shipped with each boiler and
must be applied as directed in the boiler manual.
Water treatment company must provide additional system
water treatment if required.
ITEMS
✔
Electrical components
Wiring materials and fused shut-off switch
Zone valves and other system control devices, as
required
Carbon monoxide detector, when required
Antifreeze, when required
Use only antifreeze listed in Ultra boiler manual as suit-
able for use with Ultra Gas boilers (antifreeze is available
from Weil-McLain) — Ask your Weil-McLain distributor for
information or visit us online at www.weil-mclain.com to
review Ultra literature for recommendations.
Ventilation openings
Louvers for ventilation openings, when specified in boiler
manual
Propane applications
Ultra-80 can be ordered as propane or you can obtain
the Ultra-80 propane conversion kit.
For Ultra-80 at altitude up to 5,500 feet, use
W-M p/n 383-501-020.
All other Ultra boilers are shipped with items needed to
set up the boiler for propane, for altitude up to 5,500 feet.
High altitude propane, Ultra-80 only
— For altitude
above 5,500 feet, all Ultra boilers require a high-altitude
propane conversion kit. The Ultra-80 must first be
equipped for propane (either purchased as Ultra-80LP or
converted to Ultra-80LP using the kit listed above).
Ultra-80LP
383-500-644
High altitude propane, Ultra-105–399
— For altitude
above 5,500 feet, all Ultra boilers (except Ultra-399)
require a high-altitude propane conversion kit. Obtain
the kit listed below:
Ultra-105
383-500-645
Ultra-155
383-500-646
Ultra-230
383-500-647
Ultra-299
383-500-648
Wall mounting option
Weil-McLain Ultra wall-mounting kit, p/n 389-900-180
Recommended equipment
Use a
combustion analyzer
to verify boiler operation,
following the instructions in the Ultra boiler manual.
U-tube manometer
for checking gas line pressure
Volt-ohmmeter
may be required for troubleshooting
Material checklist — piping and other items
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