Hydronics

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Acceptance Capacity

1 gal (1) Acceptance Capacity 1+gal 1 gal
3 gal (1) Acceptance Capacity 3+gal 3 gal
6 gal (2) Acceptance Capacity 6+gal 6 gal
8 gal (1) Acceptance Capacity 8+gal 8 gal
17.7 gal (1) Acceptance Capacity 17.7+gal 17.7 gal

Amperage Rating

0.5 A (1) Amperage Rating 0.5+A 0.5 A
7.2 A (2) Amperage Rating 7.2+A 7.2 A

Body Material

Brass (49) Body Material Brass+ Brass
Brass/Bronze (1) Body Material Brass%2FBronze+ Brass/Bronze
Bronze (4) Body Material Bronze+ Bronze
Cast Gunmetal (1) Body Material Cast+Gunmetal+ Cast Gunmetal
Cast Iron (5) Body Material Cast+Iron+ Cast Iron
Copper Silicon Alloy (6) Body Material Copper+Silicon+Alloy+ Copper Silicon Alloy
Forged Brass (4) Body Material Forged+Brass+ Forged Brass
Stainless Steel (1) Body Material Stainless+Steel+ Stainless Steel

Boiler Output

24 VAC 0.5 A 12 VA (1) Boiler Output 24+VAC+0.5+A+12+VA+ 24 VAC 0.5 A 12 VA

Coefficient of Volume

2.8 Cv (1) Coefficient of Volume 2.8+Cv 2.8 Cv
3.5 Cv (3) Coefficient of Volume 3.5+Cv 3.5 Cv
7 Cv (1) Coefficient of Volume 7+Cv 7 Cv
7.5 Cv (2) Coefficient of Volume 7.5+Cv 7.5 Cv

Coil Voltage

24 VAC (3) Coil Voltage 24+VAC 24 VAC

Color

6/6 Black (2) Color 6%2F6+Black+ 6/6 Black
Blue (2) Color Blue+ Blue
Red (2) Color Red+ Red
Silver (1) Color Silver+ Silver
White (3) Color White+ White

Contact Form

DPDT (1) Contact Form DPDT+ DPDT
DPST (2) Contact Form DPST+ DPST
SPST (1) Contact Form SPST+ SPST

Control Range

-40 to 100 deg F (1) Control Range -40+to+100+deg+F -40 to 100 deg F

Control Type

Microprocessor PI (1) Control Type Microprocessor+PI+ Microprocessor PI

Depth

22 in (1) Depth 22+in 22 in
25 in (2) Depth 25+in 25 in
31 in (2) Depth 31+in 31 in

Diameter

8 in (1) Diameter 8+in 8 in
11.4 in (1) Diameter 11.4+in 11.4 in
12 in (2) Diameter 12+in 12 in
16 in (4) Diameter 16+in 16 in
21 in (1) Diameter 21+in 21 in

Diaphragm Type

100% Butyl Rubber (1) Diaphragm Type 100%25+Butyl+Rubber+ 100% Butyl Rubber
Butyl Rubber (6) Diaphragm Type Butyl+Rubber+ Butyl Rubber

Differential

+/-1 deg F (1) Differential %2B%2F-1+deg+F +/-1 deg F

Domestic/Import

Domestic (252) Domestic/Import Domestic+ Domestic
Import (71) Domestic/Import Import+ Import

Electrical Ratings

0.167 A (2) Electrical Ratings 0.167+A 0.167 A
0.167 A, 24 VAC, 3 to 5 min Time to Open/Close (1) Electrical Ratings 0.167+A%2C+24+VAC%2C+3+to+5+min+Time+to+Open%2FClose+
200 mA Start, 24 VAC/70 mA/2 W Working Current/Power (1) Electrical Ratings 200+mA+Start%2C+24+VAC%2F70+mA%2F2+W+Working+Current%2FPower+
<300 mA for 2 min, 24 VAC, 1 W Working Current/Power (1) Electrical Ratings %3C300+mA+for+2+min%2C+24+VAC%2C+1+W+Working+Current%2FPower+

Finish

Nickel Plated (1) Finish Nickel+Plated+ Nickel Plated

Frequency Rating

50/60 Hz (1) Frequency Rating 50%2F60+Hz 50/60 Hz
60 Hz (1) Frequency Rating 60+Hz 60 Hz

Fuel Type

Natural Gas (4) Fuel Type Natural+Gas+ Natural Gas
Natural/Propane Gas (10) Fuel Type Natural%2FPropane+Gas+ Natural/Propane Gas
Propane Gas (1) Fuel Type Propane+Gas+ Propane Gas

Horsepower

1/15 hp (1) Horsepower 1%2F15+hp 1/15 hp
1/12 hp (4) Horsepower 1%2F12+hp 1/12 hp
1/8 hp (1) Horsepower 1%2F8+hp 1/8 hp
1/6 hp (1) Horsepower 1%2F6+hp 1/6 hp

Humidity Range

10 to 90 % (1) Humidity Range 10+to+90+%25 10 to 90 %

Ignition Type

Direct Spark (1) Ignition Type Direct+Spark+ Direct Spark

Inlet Size

1/2 in (1) Inlet Size 1%2F2+in 1/2 in
3/4 in (9) Inlet Size 3%2F4+in 3/4 in
1 in (5) Inlet Size 1+in 1 in
1 in FNPT (33) Inlet Size 1+in+FNPT+ 1 in FNPT
2 in (9) Inlet Size 2+in 2 in
3 in (4) Inlet Size 3+in 3 in
4 in (4) Inlet Size 4+in 4 in

Measuring Range

0.15 to 0.8 gpm (1) Measuring Range 0.15+to+0.8+gpm 0.15 to 0.8 gpm
0.25 to 2 gpm (1) Measuring Range 0.25+to+2+gpm 0.25 to 2 gpm
30 to 210 deg F (2) Measuring Range 30+to+210+deg+F 30 to 210 deg F

Number of Zones

3 (2) Number of Zones 3+ 3
4 (4) Number of Zones 4+ 4
6 (2) Number of Zones 6+ 6
12 (1) Number of Zones 12+ 12

Outlet Size

1/2 in (64) Outlet Size 1%2F2+in 1/2 in
5/8 in (2) Outlet Size 5%2F8+in 5/8 in
3/4 in (9) Outlet Size 3%2F4+in 3/4 in
1 in (15) Outlet Size 1+in 1 in
1-1/4 in (35) Outlet Size 1-1%2F4+in 1-1/4 in
1-1/4 in Union (16) Outlet Size 1-1%2F4+in+Union+ 1-1/4 in Union

Port Type

Full (6) Port Type Full+ Full

Power Rating

1/6 hp (1) Power Rating 1%2F6+hp 1/6 hp
40 VA (1) Power Rating 40+VA+ 40 VA
50 VA (2) Power Rating 50+VA+ 50 VA

Power Supply

24 VAC, 10%, 60 Hz, 1.5 VA (1) Power Supply 24+VAC%2C+10%25%2C+60+Hz%2C+1.5+VA+ 24 VAC, 10%, 60 Hz, 1.5 VA

Primary Voltage

120 VAC (4) Primary Voltage 120+VAC 120 VAC

Radius

3/8 in (1) Radius 3%2F8+in 3/8 in
1/2 in (1) Radius 1%2F2+in 1/2 in
5/8 to 3/4 in (1) Radius 5%2F8+to+3%2F4+in 5/8 to 3/4 in

Relay Specification

2 A, 24 VAC, Latching (1) Relay Specification 2+A%2C+24+VAC%2C+Latching+ 2 A, 24 VAC, Latching

Reset Type

Automatic (9) Reset Type Automatic+ Automatic
Manual (5) Reset Type Manual+ Manual

Secondary Voltage

24 VAC (2) Secondary Voltage 24+VAC 24 VAC
24 VDC (2) Secondary Voltage 24+VDC 24 VDC

Terminal Designations

TH, Sensor (1) Terminal Designations TH%2C+Sensor+ TH, Sensor

Thickness

3/8 in (1) Thickness 3%2F8+in 3/8 in
0.48 in (1) Thickness 0.48+in 0.48 in
1/2 in (3) Thickness 1%2F2+in 1/2 in
15/16 in (1) Thickness 15%2F16+in 15/16 in

User Interface

DIP Switch (1) User Interface DIP+Switch+ DIP Switch

Vent Type

Concentric (1) Vent Type Concentric+ Concentric
Direct (14) Vent Type Direct+ Direct

Voltage Rating

120/240 VAC (1) Voltage Rating 120%2F240+VAC 120/240 VAC
2.2 to 3.6 VDC (1) Voltage Rating 2.2+to+3.6+VDC 2.2 to 3.6 VDC
24 VAC (15) Voltage Rating 24+VAC 24 VAC
24 VDC (2) Voltage Rating 24+VDC 24 VDC
115 VAC (7) Voltage Rating 115+VAC 115 VAC
120 VAC (20) Voltage Rating 120+VAC 120 VAC
240 VAC (1) Voltage Rating 240+VAC 240 VAC

Working Pressure

80 psi (41) Working Pressure 80+psi 80 psi
125 psi (7) Working Pressure 125+psi 125 psi
145 psi (4) Working Pressure 145+psi 145 psi
150 psi (18) Working Pressure 150+psi 150 psi
150 psig (5) Working Pressure 150+psig 150 psig

Hydronics is the use of water as the heat-transfer medium in heating and cooling systems. A hydronic piping system is used to circulate chilled or hot water with the connections between the piping and the terminal units made in a series loop. The terminal units are the heat exchangers that transfer the thermal energy between the water and the spaces to be cooled or heated.

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