Technical Data
10
VITOROND 200, VD2A
Burner Calibration
Weishaupt burners / Riello burners
A Vitorond 200, VD2A boiler with a high-performance gas burner installed can achieve a
thermal efficiency of up to 85.2%, and up to 87.9% if equipped with a #2 oil burner as
follows:
Gas-fired
10% volume CO
2
, 280°F / 138°C net stack temperature, CO in ppm < 50
Oil-fired
13% volume CO
2
, 300°F / 149°C net stack temperature, smoke spot 0 - 1
(on the Bacharach Scale)
See separate instructions supplied with the burner.
The maximum input published for each boiler size must not be exceeded.
Model
Flue gas
resistance
mbar
“w.c.
VD2A-125
VD2A-160
VD2A-195
VD2A-230
VD2A-270
0.65
0.95
1.0
1.2
1.6
0.26
0.38
0.40
0.48
0.64
Burner manufacturer
Weishaupt or Riello
Burner/Gas train approval
Standard approvals are CSA (for Canada) and UL (for U.S.). IRI and FM approved equipment
is also available - please inquire.
Electrical requirements
Weishaupt W Series and Riello burners are available in 120 VAC, single-phase, in a 60 Hz
configuration. It is generally acceptable to use voltages within ten percent of the supply
voltage. Available voltage inside boiler room must be provided at time of order. Ensure
appropriate disconnect means and overcurrent protection.
Natural gas pressure
Natural gas pressures and heating values as provided by the gas utilities vary greatly across
North America. Select the appropriate gas train accordingly. Low pressure gas trains have a
maximum input of 14 ”w.c.; high pressure gas trains have a maximum pressure of 5 psig.
Minimum gas pressures apply - please inquire. Gas pressures and heating values at site
must be provided at time of order.
5
3
5
4
7
8
7
v
1
.2
