Johnson Controls F240EA Installation Guide

F240EA Pneumatic Liquid Flow Switch

Installation Instructions

Part No. 24-7664-3132, Rev. A

Issued October 15, 2015

Refer to the QuickLIT website for the most up-to-date version of this document.

Applications

IMPORTANT: Do not use F240EA Pneumatic Liquid Flow Switches with fluids that are incompatible with the wetted materials (forged normal brass, free machining bronze, and Viton®) and which are classed as a hazardous material. Use in this condition may cause malfunction or improper operation.

IMPORTANT: Do not use F240EA Pneumatic Liquid Flow Switch where the fluid in the pipes drops below the fluid’s freezing point, causing an internal freeze-up.

IMPORTANT: Use this F240EA Pneumatic Liquid Flow Switch only as an operating control. Where failure or malfunction of the flow switch could lead to personal injury or property damage to the controlled equipment or other property, additional precautions must be designed into the control system. Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or protect against failure or malfunction of the flow switch.

IMPORTANT: Utiliser ce F240EA Pneumatic Liquid Flow Switch uniquement en tant que dispositif de régulation. Lorsqu'une défaillance ou un dysfonctionnement du flow switch risque de provoquer des blessures ou d'endommager l'équipement contrôlé ou un autre équipement, la conception du système de contrôle doit intégrer des dispositifs de protection supplémentaires. Veiller dans ce cas à intégrer de façon permanente d'autres dispositifs, tels que des systèmes de supervision ou d'alarme, ou des dispositifs de sécurité ou de limitation, ayant une fonction d'avertissement ou de protection en cas de défaillance ou de dysfonctionnement du flow switch.

The F240EA Pneumatic Liquid Flow Switch detects the increase or decrease of liquid flow in a pipe. The F240EA switch responds to liquid flow in a pipe that carries water, ethylene glycol, or other nonhazardous fluids.

The F240EA switch uses a variety of paddle sizes to respond to liquid flow rates in applications with pipe sizes greater than 1-inch trade size. The paddle has three segments. You can remove (or trim) the paddle segments for pipe sizes under 3 inches. A 6 in. paddle that can be trimmed for 4 in. and 5 in. pipe is available.

The F240EA Pneumatic Liquid Flow Switch acts as an automatic operating control in air conditioning, heating and cooling water systems and in processing work.

Typical applications include:

•Flow detection switch to start the refrigeration compressor on a liquid chiller system when flow has been established.

•Signal or alarm switch to indicate when the pump on a condenser cooling water system shuts down.

•Proving the flow of water before an electric immersion heater is turned on.

Installation

The F240EA Pneumatic Liquid Flow Switch is packaged with 1 in., 2 in., and 3 in. stainless steel flow paddles along with a paddle screw and lock washer. See Table 2 for replacement parts.

IMPORTANT: The flow paddle must not touch the pipe or any restrictions in the pipe. If the flow paddle touches the pipe (or restrictions in the pipe), the switch may not be able to properly detect changes in fluid flow.

Adjust the flow paddles to the size of the pipe used. Install the large flow paddle, if needed. Trim the flow paddle at the arc corresponding to the pipe size. See Figure 1, Figure 2, Figure 3, and Table 1.

F240EA Pneumatic Liquid Flow Switch Installation Instructions

1

<![if ! IE]>

<![endif]>FIG:instl_flw_pddl

Table 1: Trimming the Flow Paddles (Part 2 of 2)

Paddle Size	Use or Trim This Paddle to Fit
5 in.	6 in.
6 in.	6 in.

<![if ! IE]>

<![endif]>FIG:pddl_tmplt

Figure 1: Installing the Flow Paddles

Note: Allow a minimum clearance of 3/16 in. (5 mm) between the end of the flow paddle and the pipe wall.

<![if ! IE]>

<![endif]>FIG:trm_flw_pddl_F240EA

1 in. [29 mm]

1-1/4 in. [37 mm]

1-1/2 in. [43 mm]

2 in. [54 mm]

2-1/2 in. [67 mm]

3 in. [83 mm]

4 in. [103 mm]

5 in. [134 mm]

6 in. [162 mm]

b

b = 25 mm for the 1 in. paddle

b = 29 mm for the 2, 3, or 6 in. paddle

Figure 2: Trimming the Flow Paddles

Table 1: Trimming the Flow Paddles (Part 1 of 2)

Paddle Size	Use or Trim This Paddle to Fit
1 in.	1 in.
1-1/4 in.	2 in.
1-1/2 in.	2 in.
2 in.	2 in.
2-1/2 in.	3 in.
3 in.	3 in.
4 in.	6 in.

1 in. pipe

1-1/2 in. pipe 2 in. pipe

2-1/2 in. pipe

3 in. pipe

4 in. pipe

5 in. pipe

6 in. pipe

Original Length

Figure 3: Trimming Diagram for the Large Flow Paddle

F240EA Pneumatic Liquid Flow Switch Installation Instructions

2

Dimensions

	4-9/16
4	[116]		2-3/4
[102]	2		[70]
		Barbed connector for	1-3/8
	[51]
		1/4 [6] O.D. x	[35]
		3/16 [4] I.D.
		tubing
1/2 [13]		30mm Hex
Typical
Thread		1-11 1/2 NPT
Engagement
			3-1/2
		4-1/2	[89]
		[114]
		5-11/16
		[144]

1-1/8 [28]

3/4

[18]2-9/16 [66]

2-1/8 [54]

<![if ! IE]>

<![endif]>FIG:dmnsns_F240EA

Figure 4: Dimensions for F240EA Standard Flow Switch, in. [mm]

Accessories

Table 2: Replacement Paddle Parts

Product Code	Description
Number
KIT21A-600	Stainless steel 3-piece paddle (3 in., 2 in., and 1 in. segments)
KIT21A-601	Stainless steel 6 in. paddle
KIT21A-602	Stainless steel 3-piece paddle (3 in., 2 in., and 1 in. segments) and Stainless steel 6 in. paddle

F240EA Pneumatic Liquid Flow Switch Installation Instructions

3