Honeywell VQ400M Series, Руководство по продукту, Страница: 6 / 17

HONEYWELL
HONEYWELL HONEYWELL
HONEYWELL
CLASS “A” COMBINATION VALVES
VQ400M-Series
EN2R9081-C
October 2009
6
PERFORMANCE
CHARACTERISTICS
Opening time
The first valve (V1) opens in less than 1 second.
The second valve (V2) can be either a fast opening
valve which opens in less than 1 second or a
characterized opening valve which is adjustable
from 1 up to 30 seconds, at rated capacity.
The opening characteristic is factory set at
approximately 6 seconds at the following
conditions:
•
measured at 80 % of rated capacity
•
30 mbar supply pressure
•
nominal voltage
•
20 °C
•
2,5 mbar pressure drop
•
no step pressure
Due to the influence of ambient temperature (-15 ...
60 °C) the adjusted opening time of 6 seconds
measured at 80% of adjusted flow rate can vary +/-
4 seconds.
Closing time
Less than 1 second for both valves.
Maximum working frequency
VQ400M is equipped for maximal working
frequency of one cycle per minute.
Duty cycle
Coils are suitable for permanent energizing.
Operational voltage range
The combination gas valve will function satisfactory
between 85% and 110% of the rated voltage.
Designed life time
Overview of designed life time is given in the table
below.
Table 4 Number of cycles per model.
Model Number of cycles
VQ420MA 500.000
VQ425MA 500.000
VQ440MA 300.000
VQ450MA 300.000