Boiler Manual

Table 11 - Combustion Settings
Inlet
Air
Temp.
-40°F
-30°F
-20°F
-10°F
0°F
10°F
20°F
30°F
40°F
50°F
60°F
70°F
80°F
90°F
100°F
Low
Fire
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
CO2 %
NG LPG
High
Fire
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
9.0
9.1
9.2
Cast Iron Condensing Boilers – Installation Manual
KN-6, 10, 20 Series
G&D Mat – Mesh Burners
(prior to 2010)
Low
Fire
8.7
8.8
8.9
9.0
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10.1
10.2
10.3
High
Fire
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10.1
10.2
10.3
10.5
10.6
10.7
10.8
Low
Fire
7.6
7.5
7.4
7.2
7.0
6.8
6.6
6.5
6.4
6.2
6.0
5.8
5.6
5.4
5.2
O 2 %
High
Fire
7.0
6.8
6.6
6.5
6.4
6.2
6.0
5.8
5.6
5.4
5.2
5.0
4.8
4.6
4.4
Low
Fire
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
KN-6, 10, 20 Series
Bekaert Burner (2010)
w/Air Orifi ce Slide Trim*
CO2 %
NG LPG
High
Fire
8.6
8.7
8.8
8.9
9.0
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10.0
Low
Fire
8.7
8.8
8.9
9.0
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10.1
10.2
10.3
High
Fire
10.1
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
11.0
11.1
11.2
11.3
11.4
11.5
Low
Fire
7.6
7.5
7.4
7.2
7.0
6.8
6.6
6.5
6.4
6.2
6.0
5.8
5.6
5.4
5.2
O 2 %
High
Fire
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.1
4.0
3.8
3.6
3.4
3.2
3.0
Low
Fire
6.7
6.8
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
8.0
8.1
*See page 36 for slide damper location on KN-6, 10, 20.
**Located on outlet fl ange of gas valve. (Figure 17, page 20)
Table 12 - Pressure Signal (P), ACTech (P45) - (Nat. Gas)
Firing
Rate
(Delta P)
in WC
KN-16, 26, 30 Series
Bekaert Burner (2010)
w/Gas Orifi ce Slide Trim**
CO2 %
NG LPG
High
Fire
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
9.0
9.1
9.2
9.3
9.4
Low
Fire
7.7
7.9
8.0
8.2
8.3
8.4
8.5
8.7
8.8
8.9
9.0
9.2
9.3
9.4
9.5
High
Fire
9.4
9.5
9.6
9.7
9.8
9.4
10.1
10.2
10.3
10.5
10.6
10.7
10.8
10.9
11.0
Low
Fire
8.6
8.5
8.5
8.4
8.4
8.3
8.1
7.9
7.8
7.6
7.4
7.2
7.1
6.9
6.8
KN6 KN10 KN20 KN16 KN26 KN30
(P45) (P46)
(Delta P)
in WC
(P45) (P46)
(Delta P)
in WC
(P45) (P46)
(Delta P)
in WC
(Delta P)
in WC
O 2 %
High
Fire
6.9
6.7
6.5
6.4
6.2
6.1
5.9
5.7
5.5
5.3
5.2
5.0
4.8
4.7
4.5
(Delta P)
in WC
100% 3.20 n/a 176 3.20 n/a 198 2.60 n/a 240 12.00 10.00 8.00
33% 0.44 0.44 0.44 1.50 1.30 1.10
25% 0.28 0.28 0.28 0.85 0.72 0.70
20% 0.20 25 n/a 0.20 30 n/a 0.20 32.5 n/a 0.60 0.50 0.48
*Complete ACTech default settings listed on (page 33).
To determine signal in mm WC, multiply signal pressure by 25.4 - (See Factory Startup sticker for LP).
25