Brochure

Dimensions
Specifications
Indoor Installation Only
Meets Ultra-Low NOx requirements
Modulating burner with 10:1 turndown ratio
Power Direct Vent Design
DHW flow rate up to 4.8 gpm at 77°F temperature rise
50 PSI max pressure (boiler); 150 PSI max pressure (DHW)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
40 45 50 55 60 65 70 75 80 85 90 95 100
Flow Rate (GPM)
Delta T (°F)
Combi Boiler: Flow Rate vs. Temperature Rise
ACB-110
ACB-150
ACB-199
Warranty
• 10-year limited warranty on heat exchanger in residential
applications.
• 5-year warranty on all parts.
• Refer to hotwater.com for further warranty details
13-1/2”
8-3/4”
2-3/4”
12-3/4”
5”
5”
14-1/2”
10-1/2”
9”
17-1/4”
32-1/2”
2-3/4”
14-3/4”
2-3/4”
3-1/2”
6-1/2”
2”
18”
14-3/4”
3-1/2”
2-3/4”
6-1/2”
2-3/4”
2”
110 Models
TOP
150-199 Models
TOP
BOTTOM
FRONT
13-1/2”
8-3/4”
2-3/4”
12-3/4”
5”
5”
14-1/2”
10-1/2”
9”
17-1/4”
32-1/2”
2-3/4”
14-3/4”
2-3/4”
3-1/2”
6-1/2”
2”
18”
14-3/4”
3-1/2”
2-3/4”
6-1/2”
2-3/4”
2”
110 Models
TOP
150-199 Models
TOP
BOTTOM
FRONT
13-1/2”
8-3/4”
2-3/4”
12-3/4”
5”
5”
14-1/2”
10-1/2”
9”
17-1/4”
32-1/2”
2-3/4”
14-3/4”
2-3/4”
3-1/2”
6-1/2”
2”
18”
14-3/4”
3-1/2”
2-3/4”
6-1/2”
2-3/4”
2”
110 Models
TOP
150-199 Models
TOP
BOTTOM
FRONT
13-1/2”
8-3/4”
2-3/4”
12-3/4”
5”
5”
14-1/2”
10-1/2”
9”
17-1/4”
32-1/2”
2-3/4”
14-3/4”
2-3/4”
3-1/2”
6-1/2”
2”
18”
14-3/4”
3-1/2”
2-3/4”
6-1/2”
2-3/4”
2”
110 Models
TOP
150-199 Models
TOP
BOTTOM
FRONT
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
0.0 0.5 1.1 1.6 2.1 2.6 3.2 3.7 4.2 4.8 5.3 5.8 6.3 6.9 7.4 7.9 8.4
Pressure Loss (psi)
Flow Rate (GPM)
Combi Boiler: Pressure Loss
Head (ft)
48