Johnson Controls GH-5000

Questions and Answers

R
Ryan ButlerAug 1, 2025
Why is my Johnson Controls GH-5000 motor not running?
- D
  David HamiltonAug 2, 2025
  The motor might not be running due to several reasons: * Incorrect or missing supply voltage. Check the switches, fuses, circuit breakers, and actuator wiring connections. * The flow rate is set too low. Turn the ‘M’ adjustment screw counterclockwise to increase the flow rate. * There's an internal defect. In this case, replace the actuator.
C
carol39Aug 6, 2025
What to do if Johnson Controls GH-5000 motor runs but valve doesn't open?
- C
  Corey KnightAug 6, 2025
  If the motor runs, but the valve doesn't open, consider these potential causes: * The operating pressure might be too high. Verify that the maximum operating pressure isn't exceeded. * The horizontal actuator might be incorrectly mounted. Turn the actuator and observe the correct mounting positions as indicated on the actuator label. * The stroke setting could be set below 3 mm. Turn the ‘R’ or ‘S’ adjustment screw counterclockwise to increase the stroke. * Check the flow direction, indicated by an arrow on the valve body. * There may be an internal defect, requiring you to replace the actuator.
K
Katherine TateAug 10, 2025
What to do if Johnson Controls Control Unit actuator moves through low position?
- Z
  Zachary PriceAug 10, 2025
  If the actuator moves through the low position, it could be due to: * Incorrect wiring. Check the wiring. * A switch defect. Replace the terminal box.
L
lewisdanielleAug 15, 2025
What to do if Johnson Controls GH-5000 motor does not turn off?
- C
  Christine FoleyAug 15, 2025
  If the motor does not turn off, the limit switch might be defective. Replace the terminal box.
M
Mary BushAug 19, 2025
Why is my Johnson Controls GH-5000 hot?
- J
  Jessica SimsAug 19, 2025
  If the actuator surface becomes hot, it could be due to wrong operating voltage. Replace the actuator and check the operating voltage.
K
Kristina RamosAug 23, 2025
Why is there leakage from my Johnson Controls Control Unit?
- J
  Joanna HughesAug 23, 2025
  Leakage can occur due to issues with the flanges or fittings. Replace the seals or screws, or if necessary, replace the valve.
M
Mary FergusonAug 27, 2025
What causes inner leakage in Johnson Controls Control Unit?
- J
  Johnathan FosterAug 27, 2025
  Inner leakage can be caused by: * Dirt on the valve seat. In this case, replace the valve. * Incorrect flow direction. Check the flow direction, which is indicated by an arrow on the valve body.

Summary

Product Overview GH-5000

Function

Describes the primary operational characteristics of the valve.

Models

Lists the available valve body types and actuator versions.

Applications

Outlines typical usage scenarios for the GH-5000 valve.

Safety Instructions

Definition of Symbols

Explains warning and caution symbols used in the manual.

Wiring Configurations

On-Off, On-Low-Off, and Ignition Wiring

Wiring details for On-Off, On-Low-Off, and Ignition configurations.

Adjustments

Switch M and S Adjustments

Adjustments for 'M' (Maximum Flow) and 'S' (Feedback/CPI) switches.

Switch R and MR Operation

Adjustments for 'R' (Reduced Stage) and 'MR' (Manual Restart) switches.

Repairs and Replacement

Valve Servicing and DN 40-80 Models

General servicing and specific DN 40-80 flanged/threaded model repairs.

DN100-150 Flanged Body Model Repairs

Specific repair/replacement steps for DN100-150 flanged bodies.

Spare Parts and Replacement Actuators

Flow Characteristics

Flanged Valve Bodies

Flow characteristics for flanged valve bodies.

Threaded Valve Bodies

Flow characteristics for threaded valve bodies.

Flow;Stroke Characteristic Contour Plug

Relationship between valve stroke and flow rate.

Dimensions and Weight

Flanged Valve Bodies DN40-150

Dimensions and weight for flanged valve bodies DN40-150.

Threaded Valve Bodies Rp 3¼ to Rp 3

Dimensions for threaded valve bodies Rp 3¼ to Rp 3.

The Johnson Controls GH-5000 Electro-Hydraulic Actuator Gas Valve is a safety shut-off valve designed for various commercial and industrial applications.

Function Description

The GH-5000 valve is a normally closed (NC), single-seat valve that features fast closing and slow opening. It is equipped with a sturdy and reliable electro-hydraulic actuator. The valve is EC type-tested and certified as a safety shut-off valve Class A (EN 161), ensuring its compliance with safety standards.

Important Technical Specifications

The valve is suitable for gas families 1, 2, and 3 according to DVGW-Arbeitsblatt G 260/I.

Max. Operating Pressure:

Rp ¾ - 2½ & DN 40-65: 1000 mbar
Rp 3 & DN 80-100: 800 mbar
DN 125: 650 mbar
DN 150: 350 mbar

Permissible Ambient Temperature: -10 to +60°C (14 to 140°F).

Valve Sizes:

Threaded connections: Rp ¾, 1, 1½, 2, 2½, 3 (ISO 7-1:1994)
Flanged connections: DN 40, 50, 65, 80, 100, 125, 150 (ISO 7005 PN 16, DIN EN 1092-2)

Materials:

Valve body: Die-cast aluminium EN AC-43400 or EN AC-47100 (DIN EN 1706) for Rp ¾ to 2 and DN 40-50. Cast iron EN-GJS-400-15 (DIN EN 1563) for Rp 2½ to 3 and DN 65-80, and valves GH-57.. DN100-150. Cast iron EN-GJL-250 (DIN EN 1561) for valves GH-54.. DN100-150.
Seals, diaphragm: NBR
Standard Strainer: 1 mm (0.04 in.) mesh (steel)

Operating Voltages:

120 V +6% / -10% (50/60 Hz)
230 V +6% / -10% (50/60 Hz)

Power Consumption:

200 W on opening action
15 W in opened state

Enclosure: IP 54 (NEMA 1).

Operating Time Rating: 100% ED.

Duty Cycles:

3 min⁻¹ (Rp ¾ - 1½, DN 40)
2 min⁻¹ (Rp 2-3, DN 50-80)
1 min⁻¹ (DN 100-150)

Opening Time:

Rp ¾ - 1½, DN 40: < 6.5 s
Rp 2-3, DN 50-80: < 8 s
DN100-150: < 13 s

Closing Time: < 1 s.

Agency Listing: EC-Type Approval, Pressure Equipment (97/23/EC), Appliances burning gaseous fuels (90/396/EC): EN 161, Electromagnetic compatibility (89/336/EC), Low voltage equipment (73/23/EC).

Usage Features

The GH-5000 valve is designed for use in various applications including commercial and industrial boilers, burners, ovens, rooftop units, make-up air heaters, hot water heaters, kilns, and paint booths.

Mounting: The valve contains hydraulic fluid, and the pump needs to operate the valve. It can be mounted horizontally with the actuator pointed up (vertical) or in one plane in positions not exceeding 90° from vertical. Vertical mounting is preferred where possible. The actuator can be removed and rotated to provide flexibility in mounting, but it must remain within the range indicated on the valve label.

Installation:

Ensure the specified maximum ambient temperature is not exceeded.
Verify that the power supply voltage matches the required control valve voltage.
The gas flow must follow the direction indicated by the arrow on the valve body to prevent leakage.
For threaded connections, use an approved pipe joint sealing compound on male threads. Ensure threads are smooth and free of burrs.
For flanged connections, ensure mating surfaces are free from burrs and loose particles, and gaskets/O-rings are correctly positioned.
Check for leakage before making adjustments by applying air pressure (max 70 mbar/1 psi) to the inlet and using a soap and water solution. Tighten joints or replace parts if leaks are detected.
Wiring connections must be made according to the provided wiring diagrams.

Adjustments: The valve features three adjustable switches (M, S, R) inside the terminal box to adjust stroke and flow rate.

Switch M (Maximum Flow): Factory set to full flow. Turn clockwise to reduce flow, counterclockwise to increase. Do not adjust the sealed grub screw.
Switch S (Feed back position / CPI or Ignition Stage): Factory set to approx. 0.5 mm (CPI) or 3 mm (Ignition Stage). Can be used as an auxiliary signal switch. Turn clockwise for a signal at higher stroke/flow, counterclockwise to reduce stroke/flow. For ignition flow, turn clockwise to reduce and counterclockwise to increase flow.
Switch R (Reduced Stage): Factory set to approx. 3 mm or 5.5 mm (models with ignition stage). Adjusts the reduced flow rate or low fire position. Turn clockwise to reduce, counterclockwise to increase.
Switch MR (Manual Restart): (Not illustrated in Figure 2 but shown in Figure 3). Stops gas from automatically releasing after a power cut. To restart, press the red button on the terminal box cover for at least 3 seconds. If not held long enough, the valve returns to the closed position.
Important Safety Note: Do not adjust switches S and R below 3 mm stroke to ensure safe operation. Do not adjust sealed grub screws (M and MR).

Maintenance Features

Repairs and Replacement:

All repairs, adjustments, and servicing must be performed by authorized service personnel in conjunction with the gas appliance and according to the manufacturer's instructions.
Field repairs are limited to replacing the filter, valve seat plug, gasket, terminal box, or actuator.
Always shut off the gas supply at the main manual shutoff valve before servicing.

Valve Servicing (DN 40-80 Flanged Body and All Threaded Body Models):

Close the upstream shutoff cock and disconnect power.
The valve cover contains a compressed spring. To prevent injury, remove two diagonally opposed mounting screws and replace them with long bolts and screwed-on nuts (refer to Table 2 for bolt dimensions). Screw nuts down against the valve cover to relax the spring.
Remove the remaining two mounting screws, then uniformly back off the nuts of the long bolts to lower the valve cover and relax the spring.
Remove the long bolts, valve cover, valve spring, valve seat plug, and filter.
Clean or replace the valve seat plug, filter, and gasket. Check the valve seat plug surface for damage.
Re-insert components in reverse order, ensuring the valve seat plug bore is free of foreign matter and the valve seat plug is not tilted.
Tighten bolts uniformly (refer to Table 3 for torque values).
Check for leakage and observe at least three complete operating cycles.

Valve Servicing (DN100-150 Flanged Body Models):

Close the upstream shutoff cock and disconnect power.
The valve cover contains a compressed spring. Unscrew the sealed locking screw from the bottom valve cover and replace it with a centering disk and M6 screw (refer to Table 4 for bolt dimensions).
Tighten the screw three turns past the stop to lift the valve seat plug off the valve seat, securing the valve spring.
Remove valve cover mounting screws, valve cover, valve spring, valve seat plug, and filter.
Clean or replace valve seat plug, seal, filter, and gasket. Check the valve seat plug surface for damage.
Re-insert components in reverse order, ensuring the valve seat plug bore is free of foreign matter and the valve seat plug is not tilted.
Insert the other two mounting screws and tighten uniformly (refer to Table 3 for torque values).
Remove the screw and centering disk, replacing them with the locking screw (refer to Table 3 for torque values).
Check for leakage and observe at least three complete operating cycles.

Terminal Box Replacement:

Close the upstream shutoff cock and disconnect power.
Remove the terminal box cover by loosening four screws.
Label all wires before disconnecting field wiring and flat plugs.
Loosen four terminal box mounting screws, lift the key lever, and pull out the terminal box.
Connect the flat plugs of the new terminal box to the plug connector, ensuring correct pin orientation (Th and 2 pins towards front, 1 and N pins towards back).
Insert the new terminal box into the housing, ensuring the key lever is correctly inserted.
Attach the terminal box to the housing, tightening mounting screws in numbered order.
Reconnect field wiring.
Make switch adjustments if necessary.
Reattach the terminal box cover.
Apply power, open the upstream shutoff cock, and observe at least three complete operating cycles.

Actuator Replacement:

Close the upstream shutoff cock and disconnect power.
Remove the terminal box cover and disconnect/label field wiring.
Remove four fixing screws from the flanged ring and lift off the actuator and flanged ring.
If equipped with an extension piece, loosen the grub screw and remove the extension piece from the actuator stem. The extension piece must be retained for the new actuator.
Push the extension piece onto the stem of the replacement actuator and tighten the grub screw.
Place the actuator, without seal, onto the valve body, ensuring it rests firmly. Clean the valve body bore if necessary.
Clean the seal and place it on the valve body.
Place the flanged ring and actuator on the valve body and loosely tighten fixing screws.
Turn the actuator to the preferred position and evenly tighten fixing screws in a diagonally opposed pattern (refer to Table 3 for torque values).
Check for leakage along the flanged ring.
Remove the terminal box cover, connect field wiring, and make switch adjustments if necessary.
Reattach the terminal box cover.
Apply power and observe at least three complete operating cycles.