www.DaikinApplied.com 31
IM 830-6
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 55: 2-Way Modulating Valve (Steam) Dimensions
F
E
D
B
A
AB
A
C
Table 17: 2-Way Actuator Specifications (Steam)
Power Supply
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10%
Electrical Connection
3ft [1m], 18 GA plenum cable with 1/2"
conduit connector"
Overload Protection
electronic throughout 0° to 95° rotation
Operating Range Y
2 to 10 VDC, 4 to 20 mA w/ ZG-R01 (500
Ω, 1/4 W resistor)
Input Impedance
100 k Ω for 2 to 10 VDC (0.1 mA), 500 Ω
for 4 to 20 mA
Feedback Output U
2 to 10 VDC, 0.5 mA max
Angle of Rotation
Max. 95°, 90°
Position Indication
visual indicator, 0° to 95° (0° is full spring
return position)
Running Time (Motor)
95 sec
Running Time (Fail-Safe)
<25 sec
Ambient Humidity
max. 95% RH non-condensing
Ambient Temperature Range
-22°F to 122°F [-30°C to 50°C]
Storage Temperature Range
-40°F to 176°F [-40°C to 80°C]
Table 18: Valve Body Specifications (Steam)
Service
high temperature hot water/low pressure
steam, up to 60% glycol
Flow Characteristic
A-port equal percentage
Controllable Flow Range
75°
Body Pressure Rating [psi]
600
Max Inlet Pressure (Steam)
15 psi
Media Temperature Range
(Water)
60°F to 266°F [16°C to 130°C]
Media Temperature Range
(Steam)
250°F [120°C]
Maximum Differential
Pressure (Steam)
15 psi
Max Differential Pressure
(Water)
60 psi partially open ball, 116 psi full open
Close-Off Pressure
200 psi
Table 19: 2-Way Modulating Steam Valve 1/2" – Dimensions
Valve Part No.
Cv
Connection Size
(inches)
A
B
C
D
E
F
B215HT073
0.73
1/2"
7.32" (186mm)
3.33" (85mm)
5.8" (147mm)
5.3" (135mm)
1.52" (39mm)
1.52" (38.5mm)
B215HT186
1.86
B215HT455
4.55
Table 20: 2-Way Modulating Steam Valve 1/2" – Pressure Drop
Pressure Drop Across the Valve
2-Way CCV Part
No.
Cv
Maximum
Rating
Connection
Size
2 PSI
3 PSI
4 PSI
5 PSI
10 PSI
15 PSI
B215HT073
0.73
1/2"
10.99
13.71
16.11
18.33
28.03
36.74
B215HT186
1.86
22.34
34.93
41.06
46.70
71.42
93.60
B215HT455
4.55
54.65
85.44
100.43
114.24
174.72
228.97