Watts AERCO Modulex EXT Series Technical Application Manual page 11

Modulex EXT Series Piping
BOILER LOOP DESIGN GUIDELINES
TABLE 1.2: Light Commercial: 40 F
40°F ΔT Water Flow
Water Flow @ 40°F ΔT
G = Gallons per Min
Water Pressure Drop (Ft. of Hd.) across Boiler @ 40F
∆T Flow
Strainer ∆P (Ft. of Hd.) – ('Y' Strainer, 20 mesh)
∆P (Ft. of Hd.) – (20' SCH.40, 4 x 90°, 2 x reducing
couplings, 2 x Ball Valve)
Total Primary Loop ∆P (Ft. of Hd.) @ ∆T of 40F
Strainer, Pipes, Valves and Fittings Sizes used to
estimate ∆P for above piping configurations
Recommended AERCO Pump + Circuit Setter Kit for
piping configurations not exceeding the above example
Kit includes: Pump Flange Size
Kit includes: Circuit Setter Size (NPT)
TABLE 1.3: Light Commercial: 30 F
30°F ΔT Water Flow
Water Flow (GPM) @ 30F ∆T
Water Pressure Drop (Ft. of Hd.) across Boiler @ 30°F
ΔT Flow
Strainer ∆P (Ft. of Hd.) – ('Y' Strainer, 20 mesh)
ΔP (Ft. of Hd.) – (20' SCH.40, 4 x 90°, 2 x reducing
couplings, 2 x Ball Valve). NOTE: Reducing coupling not
applied to MLX-909 and MLX-1060 because boiler line
size is already 2-1/2"
Total Primary Loop ∆P (Ft. of Hd.) @ ∆T of 30F
Strainer, Pipes, Valves and Fittings Sizes used to
estimate ∆P for above piping configurations
Recommended AERCO Pump + Circuit Setter Kit for
piping configurations not exceeding the above example
Kit includes: Pump Flange Size
Kit includes: Circuit Setter Size (NPT)
TAG-0099
Application Guide
∆
T Water Flow
EXT 450 2S
22
3.3
0.78
1.30
5.35
1-1/2"
99127-1
1-1/2"
1-1/2"
∆
T Water Flow
EXT 450 2S
30
5.7
0.41
0.65
6.8
2"
99127-2
1-1/2"
2"
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
EXT 600 2S EXT 800 2S
30 37
2.6 2.6
0.41 0.64
0.65 1.01
3.69 4.22
2" 2"
99127-2 99127-2
1-1/2" 1-1/2"
2"
1-1/2"
EXT 600 2S EXT 800 2S
39 49
4.6 4.6
0.73 1.14
1.12 1.70
6.43 7.47
2" 2"
99127-3 99127-3
2" 2"
2"
2"
EXT 1100 2S
52
2.7
1.26
1.89
5.89
2"
99127-3
2"
2"
EXT 1100 2S
69
4.8
1.09
1.24
7.10
2-1/2"
99127-4
2"
2-1/2"
Page 11 of 37
10.07.2021