Johnson Controls VP140 Serie Manual Del Usuario página 12

Balance and testing preparation
1. Each VP140 valve includes test ports.
2. Do not cover test ports with insulation.
3. If test ports are covered with hard insulation, a circuit
setter can be added to assist the balancer in verifying and
testing pressure.
Figure 1: Measuring the differential pressure.
1
0
Δp psi
2
1
3
0
4
Δp psi
2
3
4
Q
Q≠CONST
Table 8: Minimum differential pressure requirements
Product values
VP140 Bxx
VP140BAU
VP140 Cxx
VP140 CAU
2
VP140 CAW
1
3
0
4
VP140 Dxx
Δp psi
VP140 DAW
VP 140 DAY
VP140Hxx
VP140HAA
VP140HDA
VP140Jxx
VP140JAJ
VP140JDB
11
Q=CONST
HYSTERESIS
START-UP
PRESSURE
P1 - P2
Start-up ΔP
3.6 psi, 25 kPa
3.6 psi, 25 kPa
4.4 psi, 30 kPa
4.4 psi, 30 kPa
5.1 psi, 35 kPa
4.3 psi, 30 kPa
5.1 psi, 35 kPa
3.6 psi, 25 kPa
5.1 psi, 35 kPa
P/N 14-88360-03389, Rev.C