Honeywell L8104A, L8104D, L8104B, L8104C User Manual

0 (0)

L8104A,B,C,D

Electronic Water

Heater Controllers

The L8104A,B,C,D Electronic Controllers provide temperature control and ECO limit action for gas water heaters.

L8104B with Potentiometer

Remote

Potentiometer

Sensing

Bulb

L8104A,B are used in standing pilot and electronic ignition systems.

L8104C,D are used only in electronic ignition systems.

Includes electronic module, one or two sensing bulbs, and setpoint potentiometer (remoteor boardmounted).

Sensing bulb contains thermistor sensor and ECO switch. Second bulb in L8104B,C contains thermistor only.

L8104A has single sensing bulb.

L8104B has two sensing bulbs available with upper and lower bulb sensing authority allocated in ratios of 1:1, 2:1, 3:1, and 4:1. Two sensing bulbs provide temperature averaging.

L8104C has two sensing bulbs and manual reset pushbutton.

L8104D has one sensing bulb and manual reset pushbutton.

Temperature range is factory-set to meet application requirements.Maximumsettingtemperatureis200°F (93°C).

ECO limit setting is factory-set to meet application requirements.

For L8104A,B, standing pilot must be manually relit or ignition module must be reset when ECO shuts off gas control.

For L8104C,D, ignition module must be reset using pushbutton switch mounted on electronic control module when ECO shuts off gas control.

Control circuit is accurate within ±3.5°F (1.9°C) at maximum setpoint (200°F [93°C]; setpoint controls are accurate within +7°F [+3.8°C], -0°F [-0°C]).

CONTENTS

 

Specifications .................................................

2

Ordering Information .....................................

2

Installation .....................................................

5

Setting and Checkout....................................

10

Operation .....................................................

11

Troubleshooting ...........................................

12

Material Safety Data Sheets .........................

15

J. H. • Rev. 6-95 • ©Honeywell Inc. 1995

1

6868-0063- -33

L8104A,B,C,D

SPECIFICATIONS • ORDERING INFORMATION

Specifications

IMPORTANT: The specifications given in this publication do not include normal manufacturing tolerances. Therefore, this unit may not exactly match the listed specifications. Also, this product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed.

MODELS:

L8104A Electronic Commercial Water Heater Controller: Includes electronic control module, single sensing bulb containing thermistor and ECO switch, and remoteor board-mounted potentiometer.

L8104B Electronic Commercial Water Heater Controller: Includes electronic control module, two sensing bulbs (one with thermistor and ECO switch and one with thermistor only), and remoteor board-mounted potentiometer. Models are available with sensing authority allocated between the upper and lower sensing bulbs in ratios of 1:1, 2:1, 3:1 and 4:1; specify when ordering.

L8104C Electronic Commercial Water Heater Controller: Same as the L8104B with additional circuitry to manually reset the ECO switch.

L8104D Electronic Commercial Water Heater Controller: Same as the L8104A with additional circuitry to manually reset the ECO switch.

ELECTRICAL RATINGS:

Power Supply: 24 Vac, 50/60 Hz. Gas Control Relay Contacts:

Inductive: 2A full load, 10A locked rotor. Resistive: 2A.

TEMPERATURE SETTING RANGE: Temperature range factory set to meet application requirements. Maximum setting temperature is 200°F (93°C). Specify desired range when ordering.

DIFFERENTIAL: Factory set from 2 ± 0.5°F (1 ± 0.3°C) to 15 ± 4.5°F (8 ± 2.5°C). Specify when ordering.

AMBIENT TEMPERATURE RANGE AT MODULE: 0°F to +175°F (-18°C to +80°C).

ECO LIMIT SWITCH: Recycling or nonrecycling (oneshot). Sensing bulb must be replaced if nonrecycling ECO switch opens. Cutout temperature is factory set to meet application requirements. Specify type and desired cutout temperature when ordering. Recycling ECO is used on manual reset models (L8104C,D).

POTENTIOMETER:

Remote: Minimum setting is at fully counterclockwise rotation. Has 12 in. (30 cm) leadwires on terminals 1 and 2 and factory-mounted jumper across

terminals 2 and 3. Specify when ordering L8104. Board-mounted:Settingscaleplateprovided.Specifyrange

and board mounting when ordering L8104. SENSING BULB: Bulbs available in several styles and

materials with various leadwire lengths. Thermistor sensor and ECO limit are factory-mounted in bulb; leads terminate with 1/4 in. quick connects. Second bulb on L8104B contains only thermistor sensor; leads terminate with 3/16 in. quick connects.

MOUNTING:

Electronic Control Module: Mounts on enclosed panel with four no. 6 or 8 screws (obtained locally) through standoffs on module corners. Can be mounted in locations that reach up to 95 percent relative humidity (noncondensing), but avoid locations where water may drip on module.

Sensing Bulbs: Can be mounted in immersion well or directly immersed if properly sealed to prevent leakage. Well or seal must be ordered separately.

Setpoint Potentiometer: Remote potentiometer mounts through panel with nut on threaded shaft.

Ordering Information

When purchasing replacement and modernization products from your TRADELINE® wholesaler or your distributor, refer to the Tradeline Catalog or price sheets for complete ordering number, or specify—

1.

Order number.

6.

Potentiometer mounted on electronic module or remote unit.

2.

Temperature setting range desired.

7.

Setting scale for board-mounted potentiometer.

3.

Differential setting desired.

8.

Sensing authority desired (L8104B,C only).

4.

ECO cutout temperature desired.

9.

Sensing bulb: Specify style, material, and lead wire length.

5.

Recycling or nonrecycling ECO switch.

10.

Additional system components, if desired.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1.Your local Honeywell Home and Building Control Sales Office (please check the white pages of your phone directory).

2.Home and Building Control Customer Logistics Honeywell Inc., 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

68-0063—3

2

Honeywell L8104A, L8104D, L8104B, L8104C User Manual

DIMENSIONS:

L8104: Fig. 1.

L8104A,B: Fig. 2.

L8104C,D: Fig. 3.

APPROVALS:

Underwriters Laboratories Inc. Component Recognized:

File No. MP466, Guide No. MBPR2.

American Gas Association Certified: Report No. 70-22A.

Canadian Gas Association Certified: Report No. 1029-

CC/T-6849.

OTHER SYSTEM COMPONENTS (Order separately):

 

 

 

 

Electronic

 

 

Ignition

 

System

Module

Gas Control

Standing

VR800, VR8200, or any

pilot

 

rated 2.0A or less

Intermittent

S86F,H;

VR8440, VR8204 or

pilot

S8600H;

any rated 2.0A or less

 

S8610F,H

 

REPLACEMENT PARTS: Replacement electronic control modules, sensing bulbs, and remote potentiometers are

L8104A,B,C,D

SPECIFICATIONS

available through your Honeywell sales representative. Please provide the ordering information indicated in the Ordering Information section to assure correct replacement components.

Fig. 1—Approximate dimensions in in. (mm) of L8104 Remote Potentiometer and Sensing Bulb.

REMOTE MOUNT POTENTIOMETER

3/4

 

 

(19)

5/32

 

 

15/16

3/8

3/8 DIA. (4)

(24)

(10)

(10)

 

 

 

1-1/16

 

 

(27) 1-3/8

 

 

(35)

3/8

 

 

(10)

3

1

 

FACTORY

2

1-1/4 (32)

INSTALLED

TERMINALS

 

JUMPER

 

1, 2 & 3

 

 

 

12 IN. (305 MM)

 

 

LEADWIRES

M413

Fig. 2—Approximate dimensions in in. (mm) of L8104A,B Electronic Control Module.

 

 

 

 

 

 

L8104A,B ELECTRONIC CONTROL MODULE

 

 

 

 

 

 

2-15/32

 

(63)

 

 

 

 

 

 

1/4

 

 

1-15/16

(49)

 

1/4

 

 

 

 

(6)

 

 

 

 

 

 

 

(TWO)

 

 

 

 

 

 

(6)

 

1-1/8

(29)

9/32

 

 

3/4

(19)

 

1

 

(TWO)

3/8

 

 

(7)

 

 

 

 

 

 

 

(10)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

120

140

 

 

 

 

 

 

 

 

 

 

160

 

 

1/2

 

 

 

 

 

 

 

 

 

 

(13)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

 

 

 

 

 

 

 

 

 

 

180

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

UPPER

2

 

 

 

SEN-1

 

 

 

 

 

 

4

 

 

 

4

 

3-15/32

 

 

 

 

 

SEN-2

 

 

 

 

LOWER

(88)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2-15/16

 

 

 

 

 

 

 

 

 

 

 

(75)

 

 

 

 

 

COM.

 

 

 

4

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

24 V

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.170 DIA.

NO 3

 

 

 

3

ONLY

 

 

 

 

 

(FOUR)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1MODELS WITH REMOTE POTENTIOMETER HAVE TWO 1/4 IN. TAB TERMINALS IN PLACE OF THE POTENTIOMETER.

2L8104A DOES NOT HAVE UPPER OR SEN-2 TERMINALS.

31/4 IN. TAB TERMINALS (3)

43/16 IN. TAB TERMINALS (5)

1 (25)

M113C

3

68-0063—3

L8104A,B,C,D

SPECIFICATIONS

ACCESSORIES:

L8104B:

L8104A:

198799A Sensor Assembly: 42 in. (107 cm) 125°C

4074ENP Potentiometer Assembly: 199075A Poten-

(257°F) leadwires with 1/4 in. quick connects.

tiometer: Clockwise turn increases temperature,

198799B Sensor Assembly: 42 in. (107 cm) 150°C

two 18 in. [46 cm] leadwires with 1/4 in. quick

(302°F) leadwires with 1/4 in. quick connects.

connects. Washer and nut.

198799C Sensor Assembly: 42 in. (107 cm) 105°C

4074ENS Potentiometer Assembly: 199053A Potenti-

(221°F) leadwires with 1/4 in. quick connects.

ometer: Counterclockwise turn increases tempera-

198799D Sensor Assembly: 42 in. (107 cm) 105°C

ture, two 18 in. (46 cm) leadwires with one bare wire

(221°F) leadwires with 1/4 in. quick connects.

and one 1/4 in. quick connect. Washer and nut.

200636A Sensor Assembly: 180° F to 201°F (83°C to

198800AOne-ShotSensorAssembly (nonrecyclying):

94°C) cutoff temperature. 22 in. (56 cm) 150°C

189°F (87°C) cutoff temperature. 11 in. (28 cm)

(302°F) leadwires.

sensor and ECO leadwires. Sensor leadwire is 1/4

200636B Sensor Assembly: 180°F to 201°F (83°C to

in. quick connect. ECO leadwire is stripped.

94°C) cutoff temperature. 22 in. (56 cm) 150°C

198800B One-Shot Sensor Assembly (non recycling):

(302°F) leadwires.

200°F (93°C) cutoff temperature. 11 in. (28 cm)

200636C Sensor Assembly: 180°F to 201°F (83°C to

sensor and ECO leadwires. Sensor leadwire is 1/4

94°C) cutoff temperature. 22 in. (56 cm) 150°C

in. quick connect. ECO leadwire is stripped.

(302°F) leadwires.

198799B Sensor Assembly: 42 in. (107 cm) 150°C

200650A Potentiometer:Clockwiseturn increases tem-

(302°F) leadwires with 1/4 in. quick connects.

perature. 8 in. (20 cm) leadwires with two 1/4 in.

 

quick connects.

 

 

Fig. 3—Approximate dimensions in in. (mm) of L8104C,D Electronic Control Module.

 

2-7/16

(62)

 

 

 

 

 

 

1/4

1-61/64 (50)

 

 

1/4

 

 

 

(6)

 

 

 

 

 

 

 

 

 

(6)

 

 

 

(TWO)

 

 

 

 

1-1/8

(29)

9/32

1 (25)

 

 

 

(TWO)

 

1

 

 

19/32

 

(7)

 

 

 

 

 

 

 

 

 

 

 

(15)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

120

140

 

 

 

 

 

 

 

160

 

 

 

1/2

 

 

 

 

 

 

 

(13)

 

 

 

100

 

 

 

 

 

 

 

3/16 IN. TAB

 

180

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINALS

 

 

 

 

 

 

 

 

 

UPPER

 

 

SEN-1

 

 

 

 

 

 

 

 

 

4-23/64

 

 

 

 

SEN-2

 

 

LOWER

(111)

 

 

 

 

 

 

 

 

 

 

 

 

U1

 

 

2-61/64

 

 

 

 

 

 

 

 

(75)

 

 

 

 

 

 

 

 

(TWO)

 

 

 

 

 

 

 

COM.

 

 

 

 

.170 DIA. (FOUR)

K1

 

 

24V

 

 

 

 

 

 

 

 

 

 

 

 

1/4 IN.TAB

 

 

C1

 

 

 

 

 

TERMINALS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD

 

K2

PV

 

 

 

 

 

 

ECO

 

 

 

 

LOCKOUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INDICATOR

 

 

 

 

 

 

 

 

LIGHT

 

 

 

ECO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

 

 

 

 

PUSH BUTTON RESET

1 (25)

1 MODELS WITH REMOTE POTENTIOMETER HAVE TWO

1/4 IN. TAB TERMINALS IN PLACE OF THE POTENTIOMETER.

M414

68-0063—3

4

L8104A,B,C,D

INSTALLATION

Installation

WHEN INSTALLING THIS PRODUCT…

1.Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2.Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

3.Installer must be a trained, experienced service technician.

4.After installation is complete, check out product operation as provided in these instructions.

WARNING

EXPLOSION HAZARD.

CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY OR DEATH.

This product is for use only in a system with a pressure relief valve.

CAUTION

Disconnect power supply before wiring to prevent electrical shock or equipment damage.

IMPORTANT: Do not bend or pull on sensor leadwires when temperature is below freezing to prevent leadwire damage. Install L8104 only when temperature is above 32°F (0°C).

LOCATION AND MOUNTING Sensing Bulb(s)

The water heater manufacturer usually provides a tapping for the sensing bulb at a point where average water temperature can be measured. With L8104B,C, the bulb containing the thermistor and ECO switch is usually mounted in the tapping near the bottom of the heater, and the other bulb is located near the top. See Fig. 4. Follow the heater manufacturer instructions.

The sensing bulb can be installed in an immersion well or directly immersed with a suitable compression fitting to prevent leakage. Wells and fittings must be ordered separately.

If an immersion well is used, the bulb should fit snugly and should touch the bottom of the well for best temperature response. Use heat-conductive compound (available in 4 oz can as Honeywell part no. 107408) to fill the space between the bulb and the well and improve heat transfer characteristics. Make sure the bulb is held firmly in the well.

If the sensor is directly immersed, use a 3/8 in. x 1/2 in. compression to M.I.P. coupling or O-ring and clamp to prevent leaks and keep bulb leadwires dry.

Electronic Control Module

Locate the electronic control module on a wall or panel in the wiring compartment of the water heater. The module must be within easy reach of the sensor leadwires in a location that is convenient for reading and changing the temperature setting. Choose a location where the module will not be exposed to water. An enclosure is recommended to help protect the module. Mount the module with four no. 6 or 8 screws through the corner standoffs.

Remote Mount Potentiometer

Choose a location that is convenient for reading and changing the temperature setting. Mount the potentiometer from the back of a panel through a 3/8 in. hole and secure it with a nut on the threaded shaft.

WIRING

IMPORTANT: For maximum trouble free operation, run the sensing bulb leadwires separately from any other current-carrying wires.

All wiring must comply with local codes and ordinances. Disconnect power supply before beginning wiring. Connect according to water heater manufacturer instructions, if available, or use Fig. 5 through 10 as a guide.

Fig. 4—Possible location of thermistor/ECO bulb and thermistor bulb.

L8104A, D

 

L8104B, C

 

UPPER

 

 

SENSING BULB

 

ELECTRONIC

(WITHOUT ECO)

 

 

 

CONTROL

 

 

MODULE

 

 

ENCLOSURE

ELECTRONIC

 

 

 

 

CONTROL

 

 

MODULE

 

 

ENCLOSURE

 

SENSING

LOWER

 

BULB

SENSING BULB

 

(WITH ECO)

(WITH ECO)

 

THERMOCOUPLE

MAIN

 

AND PILOT

 

BURNER

 

BURNER

MAIN

 

THERMOCOUPLE

BURNER

 

AND PILOT BURNER

M132A

 

 

 

5

68-0063—3

L8104A,B,C,D

INSTALLATION

Fig. 5—L8104A with board-mounted potentiometer in a standing pilot application.

 

L8104A

 

 

 

 

 

1

 

 

 

 

 

 

4

 

 

 

 

120

 

0

 

 

 

 

 

 

160

 

 

 

 

 

 

 

 

 

100

 

 

 

BLACK

 

 

 

180

3

 

 

 

 

 

 

 

 

 

SEN-1

 

 

 

 

 

 

3

BLACK

SENSING BULB WITH

 

 

 

 

 

 

 

 

 

LOWER

 

ECO SWITCH

 

COM.

 

 

 

RED

RED

 

2

 

 

3

 

RELAY

 

 

24V

 

 

 

 

 

HOT

 

 

 

 

 

 

 

 

Q308

 

 

 

2

 

 

NO 2

 

 

ONLY

 

 

 

 

 

 

 

 

 

 

 

 

ECO

 

1

POWER SUPPLY. PROVIDE DISCONNECT

 

 

 

 

CONNECTOR

 

 

 

 

 

 

 

 

 

 

VR8200

MEANS AND OVERLOAD PROTECTION

 

 

 

 

 

 

TH

TR

AS REQUIRED.

 

 

 

 

 

 

 

GAS VLAVE

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

2

1/4 IN. TAB TERMINALS (3).

 

 

 

 

 

 

 

 

 

 

 

 

L1

 

 

 

 

 

 

 

 

 

3/16 IN. TAB TERMINALS (3).

 

(HOT)

 

 

 

 

 

 

 

3

M131C

L2

 

 

 

24V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 6—L8104A with remote potentiometer in an electronic ignition application.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L8104A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SETPOINT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POTENTIOMETER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

3

 

 

 

 

 

 

 

 

 

 

 

(SHOWN FROM BACK)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

BLACK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SEN-1

 

BLACK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SENSING BULB WITH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOWER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ECO SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

RED

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

24V

 

 

 

 

 

 

 

 

 

 

 

 

 

PILOT

 

 

 

 

 

 

 

MAIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

 

 

 

 

 

VALVE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO 4

 

 

 

 

 

 

 

 

 

 

 

ONLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VR8440 OR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1ST

 

2ND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATOR

 

OPERATOR

 

VR844

 

 

 

 

S8600F,H,M;

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S8610F,H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VENT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 POWER SUPPLY. PROVIDE DISCONNECT

 

 

 

 

 

 

 

 

 

GND

 

24V

TH-W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MEANS AND OVERLOAD PROTECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DAMPER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AS REQUIRED.

 

 

 

 

 

 

 

 

 

 

 

MV MV/PV PV (BURNER) GND 24V (OPT)

 

 

PLUG (OPT)

 

SPARK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

GAS CONTROL

 

TERMINAL DESIGNATIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PILOT

COM

 

MAIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VR844, VR8440

 

 

TH

TH-TR

 

TR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 FACTORY INSTALLED JUMPER; DO NOT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REMOVE.

 

 

 

 

 

 

 

 

 

 

 

 

 

L1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(HOT)

 

 

 

 

 

24V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 1/4 IN. TAB TERMINALS (3).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 3/16 IN. TAB TERMINALS (3).

M128B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

68-0063—3

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