1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or...
-
Upload
jacob-caldwell -
Category
Documents
-
view
222 -
download
1
Transcript of 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or...
![Page 1: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/1.jpg)
1
HVACR216 - HydronicsHVACR216 - Hydronics
Zone valvesZone valves
![Page 2: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/2.jpg)
2
2 way zone valve 2 way zone valve
• Hydronic heating systems often use two or more piping circuits to supply heat to different areas in a building.
• Such areas are called zones.
• One device often used to allow or prevent flow in a given zone circuit is called a 2 way zone valve.
• Hydronic heating systems often use two or more piping circuits to supply heat to different areas in a building.
• Such areas are called zones.
• One device often used to allow or prevent flow in a given zone circuit is called a 2 way zone valve.
![Page 3: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/3.jpg)
32 way zone valve2 way zone valve
• Hydronic boiler with three zones• Hydronic boiler with three zones
![Page 4: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/4.jpg)
4
2 way zone valve2 way zone valve
![Page 5: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/5.jpg)
5
2 way zone valve2 way zone valve
• Several types of zone valves are available.
• They all consist of a valve body combined with an electrically powered actuator.
• Several types of zone valves are available.
• They all consist of a valve body combined with an electrically powered actuator.
![Page 6: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/6.jpg)
6
2 way zone valve2 way zone valve
Taco Honeywell B & G Taco Honeywell B & G
![Page 7: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/7.jpg)
72 way zone valve2 way zone valve
• The actuator is the device which causes movement of the valve shaft when supplied with an electrical signal (voltage)
• The actuator is the device which causes movement of the valve shaft when supplied with an electrical signal (voltage)
![Page 8: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/8.jpg)
8
2 way zone valve2 way zone valve
• Some actuators use small electric motors and a gear train to produce a rotary motion of the valve shaft.
• These type of valves can move from fully closed to fully open in about 3 seconds
• Some actuators use small electric motors and a gear train to produce a rotary motion of the valve shaft.
• These type of valves can move from fully closed to fully open in about 3 seconds
![Page 9: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/9.jpg)
9
Electric motor with a gear trainElectric motor with a gear train
![Page 10: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/10.jpg)
10
2 way zone valve2 way zone valve
• Others use a heat motor that expands and contracts to produce a linear motion that moves the valves shaft up and down.
• Heat motor types require 2 – 3 minutes from when the electrical signal is turned on and the valve moves to the fully open position.
• Others use a heat motor that expands and contracts to produce a linear motion that moves the valves shaft up and down.
• Heat motor types require 2 – 3 minutes from when the electrical signal is turned on and the valve moves to the fully open position.
![Page 11: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/11.jpg)
11
Heat MotorHeat Motor
![Page 12: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/12.jpg)
12
Heat MotorHeat Motor
![Page 13: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/13.jpg)
13
2 way zone valve2 way zone valve
• On multiple zone systems, a separate zone valve is installed in the line going to or returning from each zone.
• Each zone valve is controlled by its own thermostat
• End switches in each zone valve control the Circulator and/or the burner/burner control
• On multiple zone systems, a separate zone valve is installed in the line going to or returning from each zone.
• Each zone valve is controlled by its own thermostat
• End switches in each zone valve control the Circulator and/or the burner/burner control
![Page 14: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/14.jpg)
14
2 way zone valve2 way zone valve
• Zone valves are available in two-wire, three wire, or four wire configurations.
• Two wires are always required to operate the valves actuator.
• The third, and in some cases the fourth wire is connected to an end switch.
• Zone valves are available in two-wire, three wire, or four wire configurations.
• Two wires are always required to operate the valves actuator.
• The third, and in some cases the fourth wire is connected to an end switch.
![Page 15: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/15.jpg)
15
2 way zone valve2 way zone valve
• All end switches are wired in parallel• All end switches are Normally Open
• The circulator and burner are also powered when any zone is calling for heat.
• A circulator pump is always required with zone valves.
• All end switches are wired in parallel• All end switches are Normally Open
• The circulator and burner are also powered when any zone is calling for heat.
• A circulator pump is always required with zone valves.
![Page 16: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/16.jpg)
16
2 way zone valve2 way zone valve
• End switches
– When the valve reaches the nearly open or fully open position, the end switch closes.
– The switch closure is used to signal other portions of the heating circuit that the zone is “calling” for heat.
• End switches
– When the valve reaches the nearly open or fully open position, the end switch closes.
– The switch closure is used to signal other portions of the heating circuit that the zone is “calling” for heat.
![Page 17: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/17.jpg)
17
2 way zone valve2 way zone valve
• When soldering a zone valve to copper tubing the actuator needs to be removed from the zone valve body.
• The disk or ball should be positioned away from the seat to prevent overheating
• When soldering a zone valve to copper tubing the actuator needs to be removed from the zone valve body.
• The disk or ball should be positioned away from the seat to prevent overheating
![Page 18: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/18.jpg)
18
2 way zone valve2 way zone valve
• All zone valves have a lever to manually override the motor and to open the valve in emergencies or for servicing.
• All zone valves have a lever to manually override the motor and to open the valve in emergencies or for servicing.
![Page 19: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/19.jpg)
19
4 zone hydronic system4 zone hydronic system
![Page 20: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/20.jpg)
20
Lever for manual valve operation
Zone valve motor
Valve cover
![Page 21: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/21.jpg)
21
Zone ValvesZone Valves
• Both two (2) way and three (3) way zones valves are available.
• The two way zone valve either allows full flow through the valve or totally stops the flow.
• This is the most commonly used zone valve in the residential application.
• Both two (2) way and three (3) way zones valves are available.
• The two way zone valve either allows full flow through the valve or totally stops the flow.
• This is the most commonly used zone valve in the residential application.
![Page 22: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/22.jpg)
22
Zone ValvesZone Valves
• Another type of zone valve is the Three way zone valve.
• A three way zone valve has an additional port called the bypass.
• When installed in certain piping arrangements, there is always flow through the valve.
• Another type of zone valve is the Three way zone valve.
• A three way zone valve has an additional port called the bypass.
• When installed in certain piping arrangements, there is always flow through the valve.
![Page 23: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/23.jpg)
23
Zone ValvesZone Valves
• Three way zone valve• Three way zone valve
![Page 24: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/24.jpg)
24
3 way zone valves3 way zone valves
• The three way zone valve is useful when flow must be maintained in a certain portion of the piping system.
• This is often necessary in modern low mass boilers with constant firing rates are used
• The three way zone valve is useful when flow must be maintained in a certain portion of the piping system.
• This is often necessary in modern low mass boilers with constant firing rates are used
![Page 25: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/25.jpg)
25
3 way zone valves3 way zone valves
• Three way zone valves can also be used as a diverter valve.
• When used in this application, the valve directs the incoming water flow into one of two possible outlets.
• Three way zone valves can also be used as a diverter valve.
• When used in this application, the valve directs the incoming water flow into one of two possible outlets.
![Page 26: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/26.jpg)
26
3 way zone valves3 way zone valves
• In some systems, three way zone valve functioning as a diverter valve, are used to direct hot water from the boiler either to the space heating distribution system, or an indirect water heater, but never both at the same time.
• In some systems, three way zone valve functioning as a diverter valve, are used to direct hot water from the boiler either to the space heating distribution system, or an indirect water heater, but never both at the same time.
![Page 27: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/27.jpg)
27
2 way and 3 way zone valves2 way and 3 way zone valves
• Most zone valves for residential and light commercial applications operate on a 24 VAC control voltage.
• Most zone valves for residential and light commercial applications operate on a 24 VAC control voltage.
![Page 28: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/28.jpg)
28
Taco zone valve wiringTaco zone valve wiring
![Page 29: 1 HVACR216 - Hydronics Zone valves. 2 2 way zone valve Hydronic heating systems often use two or more piping circuits to supply heat to different areas.](https://reader037.fdocuments.net/reader037/viewer/2022110101/56649ef75503460f94c0aafc/html5/thumbnails/29.jpg)
29
Honeywell zone valve wiringHoneywell zone valve wiring