Nagas DTH Series, Installation And Operation Manual

Page: 6 / 43

5
Installation and operation manual – DTH-V9-2020
DTH
Model
Natural Gas
Dynamic supply
pressure****
Nominal Manifold
pressure*
Pilot
pressure
Low fire inlet capacity
Minimum
In.w.c [kPa]
Maximum
In.w.c [kPa]
At maximum capacity
In.w.c [kPa]
In.w.c [kPa] MBH Kw
35
7”
[1.74]
10”
[2.5]
2.3 ” [0. 57]
3.5 ” [0. 87]
30 8.79
40
2.9 ” [0. 72]
50
4.6 ” [ 1.15]
55
3.1 ” [0. 77]
40 11.7
65
2.8 ” [0. 69]
75
2.3 ” [0.5 7]
85
2.9 ” [0. 72]
100
3.8 ” [0. 95]
125
2.6 ” [0. 65]
60 17.6
150**
3.9” [0.97 ]
150***
10” [2.5] 14”[3.5 ] 4.0” [0.99 ]
*: The pressure adjustment may vary slightly. See the unit name plate for the exact value.
**
: With optional 2’’ NPT gas train.
***: With standard 1-1/2 ’’ NPT gas train.
****: At maximum capacity (dynamic pressure).
DTH
Model
Propane Gas
Dynamic supply
pressure****
Nominal Manifold
pressure*
Pilot
pressure
Low fire inlet capacity
Minimum
In.w.c [kPa]
Maximum
In.w.c [kPa]
At max. capacity
In.w.c [kPa]
In.w.c [kPa]
Minimum
In.w.c [kPa]
Maximum
In.w.c [kPa]
35
11 ”
[2.74]
14 ”
[3.5]
(Consult factory
or rating plate)
2.5 ” [0. 62]
30 8.79
40
50
55
40 11.7
65
75
85
100
125
60 17.6
150
Gas pressure adjustments