Daikin AVV Installation And Maintenance Manual page 26

2-Way Modulating Valve (Steam) - 1/2"
Two-way modulating control valves for MicroTech are
designed to regulate the flow of steam. They consist of a
nickel plated brass body and stainless steel ball valve and
stem, with a spring return, proportional actuator. The optional
valve accessory is shipped separate from the unit ventilator
for field installation to prevent shipping damage and to
provide flexibility in making the field piping connection.
Figure 73: 2-Way Modulating Valve (Steam) Dimensions
D
AB
B
E F
Table 18: 2-Way Modulating Steam Valve 1/2" – Dimensions
Valve Part No . Cv
B215HT073 0.73
B215HT186 1.86
B215HT455 4.55
Table 19: 2-Way Modulating Steam Valve 1/2" – Pressure Drop
Cv
2-Way CCV Part Connection
Maximum
No .
Rating
B215HT073 0.73
B215HT186 1.86
B215HT455 4.55
IM 817-7
A
A
Connection Size
A
(inches)
1/2" 7.32" (186mm)
2 PSI
Size
10.99
1/2" 22.34
54.65
Table 16: 2-Way Actuator Specifications (Steam)
Power Supply
Electrical Connection
Overload Protection
Operating Range Y
Input Impedance
Feedback Output U
Angle of Rotation
Position Indication
Running Time (Motor)
Running Time (Fail-Safe)
Ambient Humidity
Ambient Temperature Range
Storage Temperature Range
Table 17: Valve Body Specifications (Steam)
Service
Flow Characteristic
C
Controllable Flow Range
Body Pressure Rating [psi]
Max Inlet Pressure (Steam)
Media Temperature Range
(Water)
Media Temperature Range
(Steam)
Maximum Differential
Pressure (Steam)
Max Differential Pressure
(Water)
Close-Off Pressure
B C
3.33" (85mm) 5.8" (147mm)
Pressure Drop Across the Valve
3 PSI 4 PSI 5 PSI
13.71 16.11 18.33
34.93 41.06 46.70
85.44 100.43 114.24
26
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10%
3ft [1m], 18 GA plenum cable with 1/2"
conduit connector"
electronic throughout 0° to 95° rotation
2 to 10 VDC, 4 to 20 mA w/ ZG-R01 (500
Ω, 1/4 W resistor)
100 k Ω for 2 to 10 VDC (0.1 mA), 500 Ω
for 4 to 20 mA
2 to 10 VDC, 0.5 mA max
Max. 95°, 90°
visual indicator, 0° to 95° (0° is full spring
return position)
95 sec
<25 sec
max. 95% RH non-condensing
-22°F to 122°F [-30°C to 50°C]
-40°F to 176°F [-40°C to 80°C]
high temperature hot water/low pressure
steam, up to 60% glycol
A-port equal percentage
75°
600
15 psi
60°F to 266°F [16°C to 130°C]
250°F [120°C]
15 psi
60 psi partially open ball, 116 psi full open
200 psi
D E
5.3" (135mm) 1.52" (39mm)
10 PSI 15 PSI
28.03 36.74
71.42 93.60
174.72 228.97
www.DaikinApplied.com
F
1.52" (38.5mm)