Weil-McLain Ultra Commercial Installation And Start-Up Manual page 111

COMMERCIAL GAS
Ratings — multiple Ultra boilers
Engineering data (see Figure 101 for notes)
Shipping
Boiler
weight
Model
Pounds
Ultra –
per boiler
550 505
550
750
Notes for Figure 99 and Figure 100
Based on standard test procedures outlined by DOE for individual boilers, BTS-2000.
1
Net I=B=R ratings are based on piping and pickup allowance of 1.15.
2
Consult Weil-McLain Technical Services for other allowances.
Foundation sizes in Figure 99 provide 12 inches between boilers and approximately 2 inches from boiler to edge of foundation.
Smaller foundations are possible with reduced service clearances.
3 See page 7 for details.
For side-to-side installations, see Figure 2, page 7.
For back-to-back installations, see Figure 3, page 7.
Operating weight is the total weight of the boiler, including water.
4
All Ultra installations require a separate vent pipe and termination for each boiler.
terminate vents as described in vent/air installation instructions in this manual.
5
Combustion air piping can be individually piped or manifolded. See Figure 31, page 37, for manifolded air piping.
Boiler total amp load is 18 amps, which includes up to three circulators not exceeding 2.2 amps per circulator. Electrical service
required is the minimum recommended breaker or fuse size. DO NOT use larger than a 30-amp breaker or fuse.
6
In addition, circulator #4 requires a separate power supply for circulator amperage not to exceed 10 amps. Electrical service required
is the recommended breaker size of 15 amps. DO NOT use a higher-amp-rated breaker or fuse.
Part number 550-100-086/0809
-
FIRED WATER BOILER
Operating Water
weight content
Pounds
Gallons
per boiler
per boiler
Note 4
476 5.5
6.5
— Boiler Manual
(continued)
Water flow rate
per boiler
GPM GPM
@ 30°F rise @ 40°F rise
34 26
47 35
Electrical
Vent/air pipe
service
size —
Provide a required
separate vent
Amps
for each boiler
per boiler
Note 5 Note 6
6"
6" or 8"
. Install and
111