Preferred Instruments JC-22-PL2-1006 Installation And Operation User Manual

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31-35 South Street

Danbury, CT 06810

Phone: [phone]

Fax: [phone]

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Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

Table of Contents

A. Description 5

B. Specifications 6

C. Installation 7

D. Wiring 8

E. Field Adjustments 10

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 2 of 12

Preferred Instruments

Note: All rights and privileges to the design of this product including the circuit

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

WARNING!

Only qualified technicians with specific knowledge of the design of the burner and all

applicable burner/boiler safety codes should install, configure and commission the

JC-22-PL2-1006. Incorrect installation can result in equipment damage, injury, or death.

layout and software are the exclusive property of Preferred Utilities Manufacturing

Corp. No part of which can be sold, used, or modified without the expressed written

permission of Preferred Utilities Manufacturing Corp.

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 3 of 12

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 4 of 12

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

A. DESCRIPTION

The JC-22-PL2-1006 is a state-of-the-art microcomputer based linear actuator that is used as a
draft controller, with a solid state pressure sensor. The JC-22-PL2-1006 interfaces to any
commercialized flame safeguard in the industry or any dedicated burner management system.
The actuator travel range is 6” and travel time 60 seconds. The actuator has 150 lbs thrust
force.
The JC-22-PL2-1006 actuator provides automatic modulation for any balanced negative or
positive furnace pressure application.

The pressure sensing element is a linear solid state pressure transducer that is temperature
compensated that generates a low drift signal. The sensor has two inlets: one for positive
pressure and the other for negative pressure. The pressure is sampled via a ¼” NPT female
fitting through a 1/8” flexible tube connected to one of the transducer port.
There are also four miniature dials for adjusting the set point, proportional band, damping and
dead band. Base on the inputs, the microcomputer activates two solid state relays, one for
opening the damper and the other for closing the damper.

The actuator is equipped with a relay module that includes a toggle switch for selecting between
Automatic and Fully open operations. The Open Mode allows soot-blowing operation without
firing interruption and also allows the burner to fire in the “Open” damper mode under
emergency conditions.

Open and Closed end switches shut off the power to the motor whenever the arm is fully
extended or fully retracted. There is a third auxiliary switch that indicates when the damper is
fully open. This auxiliary switch is used as High Fire Switch Indicator.

The actuator is self-locked when power is lost.

A 10-point terminal strip is used for external connections. See Wiring section.

The draft controller is provided in a single compact enclosure with a removable cover and is
offered as a direct replacement for Hays Cleveland model 9502-1012-B-12, facilitating field
removal/installation.

Preferred offers a Draft Cut Off Switch model JC22-HDPCO-8 that is a direct replacement to
Hays AFS-952-55 for forced draft burners. Model JC-22-LDPCO-8 is for natural draft burners.

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 5 of 12

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

B. SPECIFICATIONS

Mechanical: 17.50L” by 7.50” W by 5.90” H
Weight: 21lbs
Operating Temperature: 0°F to +140°F (-18°C to +60°C)
Electrical: Voltage: 120 VAC +10% - 15%, 50/60Hz

Power consumption: 28VA

Travel: 6” linear, 60 sec. stroke
Thrust: 150 lbs
Damper Switch, Fully Open: 10A, 250VAC
Set Point: Adjustable from 0-100% corresponds to:

0 to +2.0 w.c. or 0 to -2.0 w.c. (see pg 12 to change)
Dampening: Adjustable from 0-100%, corresponds to 1.5 to 15 seconds
For 90% response to a step change

Dead Band: Adjustable from 0 to 100%, corresponds to .01 to .08” w.c.
Proportional Band: Adjustable from 0 to 100%, corresponds to .03 to .2” w.c.

If the actuator deviated by amount that is greater then PB,
the actuator will run at full speed

Indicators: SET-POINT. Whenever the actuator is positioned within
the dead band of the set point

DECREASE. Whenever the arm is commanded to retract

INCREASE. Whenever the arm is commanded to extend

16.50

2.69

5.38

17.50 6.71

7.69

6.00

4.38 5.95

2.50 1.82

1.7 8.56 .82 1.93

3.75

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 6 of 12

7.50

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

C. INSTALLATION

All system wiring must be run in accordance with the National Electrical Code and all local code
requirements.

•

Always remove all power to the system before wiring.

•

This product is designed to work in a variety of applications and conditions; however some
applications may not be applicable due to the presence of high electrical noise, lack of
adequate ground connections, floating neutrals or other known or unknown conditions. It is
therefore important to ensure proper system environment before installing these devices.

•

All wires near hot surfaces should be rated for 90°C (195°F) or at least 25°C (50°F) higher
than the surface temperature.

•

The most effective ground is to run the ground wire in the same raceway as the hot and
neutral from the main distribution service panel (not intermediate sub-panels) to the damper
controller.

•

The ground path needs to be low impedance (less than 1 ohm) to the equipment frame,
which in turn needs low impedance to earth ground. For a ground path to be low impedance
at RF frequencies, the connection must be made with minimum length conductors having
maximum surface areas.

•

All connections should be free of nonconductive coatings and protected against rust.

•

Utilizing conduit as a means of providing a ground must be avoided.

Mounting:

Since the draft regulator positions the outlet damper, it should be located to provide as
near a straight line thrust as possible, through at least two feet of linkage, to a damper
level. It is recommended to position the actuator vertically with the thrust arm extended
up. The sample connection should be in the UP position if the actuator has to be
mounted horizontally.

Mount the actuator on a flat, solid surface with the thrust arm fully retracted when the
damper is in closed position.

DO NOT MOUNT THE DRAFT REGULATOR ON THE BOILER WALL OR
BREECHING

D. WIRING

Wires must be 14AWG minimum with temperature rating of at least 90C. See the
following wiring diagram for external connections

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 7 of 12

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

5

18

5

19

D

M

8

M

D

M

4

LFS

4

HFS

L1

LFS

L1

HFS

L1

LFS

6

6

3

3

13

9

L2

9

L2

7

L2

7

L2

7

L2

Burner Flame Safeguard

8

D

1

8

switch

L1

HFS

1

HFS

type

13

25

7

L2

2

23

Main

Fuel Valves

Motor

Close

Open

Retract

Extend

Switch

Mod. Motor

Open Damper

End Switch

(LFS= Low Fire Switch)

(HFS=High Fire Switch)

Operating Limit

PID

Controller

BD E A 12114 231

K2

K1

K2

JC-22-xDPCO-8

K1

1 2 3 4

JC-22-HDPCO-8 High Pressure, or

JC-22-LDPCO-8 Low Draft, or equal

AUTO

JC-22-PL2-1006 Draft Regulator (Partial Schematic)

OPEN

External

(Optional)

Manual Switch

Auto Open

Limit

An External Draft Cutout is Required.

Operating

NOTE: Burner/Boiler wiring diagrams vary significantly from job to job. A Qualified Burner Technician must consult the actual wiring diagram for the job,

and the local safety codes, in order to determine how to interface the JC-22-PL2-1006 and JC-22-xDPCO-8 wiring to the existing burner wiring.

Typical Wiring Diagram for JC-22-PL2-1006 Draft Controller with JC-22-xDPCO-8 Draft Cutout

High Limit

Auto Reset

manufacturer, or

High Limit

Manual Reset

LWCO

as required by local Codes

As specified by Burner/Boiler

N H

120 Vac

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 8 of 12

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

Terminal Block Arrangement

Terminal Description

-1- 120Volt AC Line.
Must be powered for automatic pressure control. Must NOT be powered when
optional remote Manual switch is in the “Open” or “Close” position.

-2-A-B- 120VAC Neutral. (Installer must jumper 2 to A to B)

-3- Optional Manual Open Switch. When powered, damper closes (ram retracts).
Terminal 1 must NOT be powered when terminal 3 is powered.

-4- Optional Manual Close Switch. When powered, damper opens (ram extends).
Terminal 1 must NOT be powered when terminal 3 is powered.

-11 to 12- Damper Open dry contact. Contacts make when damper is fully open.
Consult burner mfg for proper flame safeguard interface connection.
Typically wired in series with flame safeguard Start/Ignition interlocks.

-D- Operating Limits relay. Energizes when all Operating Limits before the Draft Cutout
switch contact are made.

-E- Fuel Valve relay. Energizes when the fuel safety shutoff valve is energized.

Sequence

Auto

Power

(Term. 1)

120 Vac Open n/a n/a open

120 Vac Auto 0 Vac n/a open

120 Vac Auto 120 Vac 0 Vac open

120 Vac Auto 120 Vac 120 Vac open

Auto/Open

Switch

Limits

(Term. D)

Fuel

Valve

(Term. E)

Manual

Close

(Term. 3)

circuit

circuit

circuit

circuit

Manual

Open

(Term. 4)

open

circuit

open

circuit

open

circuit

open

circuit

Damper

Full Open

Full Closed

(Burner Off)

Full Open

(Purge)

Modulates

0 Vac n/a n/a n/a 120 Vac 0 Vac Opens
0 Vac n/a n/a n/a 0 Vac 120 Vac

Closes

0 Vac n/a n/a n/a 0 Vac 0 Vac Stops

n/a = not applicable, don’t care, can be either 120Vac or 0 Vac,

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 9 of 12

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

E. FIELD ADJUSTMENTS

Place the control into “AUTO” Mode after wiring to code and installing the piping
and linkage. Turn power on only after the burner manufacture instructions are
understood and executed.

After main flame has been established in modulation mode, set the following
adjustments:

1. Setpoint: Turn set point adjustment to the optimum position.
The factory set range (0” to -2” or 0” to +2”) is indicated on the
label near the adjustment pots.
The range can be changed by following the directions on page 12.

2. Damping: Turn clockwise to reduce actuator hunting caused by
flame induced pressure pulsations.

3. Dead-Band: Establishes a zone above and below the set point,
within which the actuator does not move.
Turn the dial clockwise to increase the dead band.
Turn the dial counterclockwise to decrease the dead band.
Adjustment range is +-.01to .08” w.c.

4. Proportional Band: Adjusts the amount of pressure deviation from
set-point required to cause the actuator to move at full speed.
Pressure deviations smaller than the proportional band cause the
actuator to move more slowly, in proportion to the deviation from
setpoint.

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 10 of 12

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

LED Indicators

INCREASE (yellow) The ram tube is extending, which opens the damper.

DECREASE (yellow) The ram tube is retracting, which closes the damper.

SETPOINT (green). The pressure is near the setpoint (within +/- the deadband)

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 11 of 12

Preferred Instruments

Div. of Preferred Utilities Manufacturing Corp.

Phone [phone], Fax [phone]

www.preferredinstruments.com

Pressure Range Conversion:

The controller pressure range can be set in the field to either:
0” to +2” or 0” to -2”

PRESSURE PID CONTROLLER BOARD

(REAR VIEW)

P2

PRESSURE

SENSOR

0" TO -2" RANGE IS SHOWN

(FACTORY CONFIGURATION)

P1

DIP SWITCH

1 2 3 4

ON

OFF

TRANSFORMER

Changing the Control Range: 0 to -2”wc versus 0 to + 2”wc

1) Disconnect all electrical power sources, multiple disconnects many be
required.

2) Disconnect the external sample line.

3) Remove the two mounting screws next to sample line connection.

4) Remove the Controller and un-plug the cable connected to the board.

5) Connect the sample line and set the DIP switch as follows:

For 0 to -2” operation

Attach the sample tube to: sensor port P1
Set DIP switch 4 to: OFF

For 0 to +2” operation

Attach the sample tube to: sensor port P2
Set DIP switch 4 to: ON

6) Reverse steps 4 thru 1 to re-assemble.

Installation and Operation Manual JC-22-PL2-1006 rev. 6 6-5-17 Page 12 of 12