Honeywell S8600, S8670, S8660, S8610 User Manual

4.6 (7)

INTERMITTENT PILOT MODULES S8600, S8610, S8660, S8670

APPLICATION

These ignition modules provide ignition sequence, flame monitoring and safety shutoff for intermittent pilot central furnaces and heating appliances. S8600 and S8660 models provide up to 1.0 A pilot and 1.0 A main valve current rating. S8610 and S8670 provide up to 1.0 A pilot and 2.0 A main valve current rating. Minimum ambient temperature

rating is -40° F [-40° C]. Maximum ambient rating is +175° F [+79° C] for S8600, S8660 and for S8610, S8670 used with 1.0 A or less main valve. Maximum ambient rating for S8610, S8670 used with 1.0 to 2.0 A main valve is +165° F [+74° C]. See Table I for a summary of other differences between models.

TABLE 1—INTERMITTENT PILOT IGNITION MODULES.

 

 

IGNITER-

 

 

100

 

 

 

 

 

SENSOR

TYPE

PREPURGE

PERCENT

LOCKOUT

IGNITION

 

MODEL

TYPE

OF GAS

TIMING

SHUTOFF

TIMING

SEQUENCEa

 

S8600A,

Separate

Natural

None

No

No

Spark on until pilot

 

S8610A

 

 

 

 

 

lightoff or manual

 

S8600F,

Combination

 

 

 

 

shutoff; pilot valve

 

S8610F

 

 

 

 

 

open until manual

 

 

 

 

 

 

 

shutdown.

 

S8600B,

Separate

Natural

None

Yes, at

15 or 90

Spark on until

 

 

S8610B

 

or LP

 

lockout

sec. max.,

lightoff or lockout;

 

S8600H,

Combination

 

 

 

as ordered

pilot valve closes

 

S8610H

 

 

 

 

 

on lockout.

 

S8600M

Combination

Natural

None

Yes, at 90

No,

Spark and pilot gas

 

 

 

or LP

 

sec. max.

continuous

on until shutoff.

 

 

 

 

 

 

retry

After 5 min. min.

 

 

 

 

 

 

 

(6 min. nom.) delay,

 

 

 

 

 

 

 

ignition starts again.

 

 

 

 

 

 

 

Ignition, wait, retry

 

 

 

 

 

 

 

repeats until pilot

 

 

 

 

 

 

 

lights or system is

 

 

 

 

 

 

 

shut down manually.

 

S8660D,

Combination

Natural

45 sec.

Yes, at

15 or 90

Ignition trial follows

 

S8670D

 

or LP

 

lockout

sec. max.,

prepurge; spark on

 

 

 

 

 

 

as ordered

until lightoff or

 

 

 

 

 

 

 

lockout; pilot valve

 

 

 

 

 

 

 

closes on lockout.

a If established flame is lost, all models restart ignition trial.

PLANNING THE INSTALLATION

Intermittent pilot systems are used on a wide variety of central heating equipment and on heating appliances such as commercial cookers, agricultural equipment, industrial heating equipment and pool heaters. Some of these applications may make heavy demands on the controls, either because of frequent cycling, or because of moisture, corrosive chemicals, dust or excessive heat in the environment. In these situations, special steps may be required to prevent nuisance shutdowns and premature control failure. These applications require Honeywell Residential Division Engineering review; contact your Honeywell Sales Representative for assistance.

FREQUENT CYCLING

These controls are designed for use on space heating appliances that typically cycle 3 to 4 times an hour during the heating season and not at all during the cooling season. In an application with significantly greater cycling rates and closer to year-round use, we recommend monthly checkout because the controls may wear out more quickly.

WATER OR STEAM CLEANING

Once a module or gas control has been wet, it may operate unreliably and must be replaced. If the appliance is

likely to be cleaned with water or steam, the controls and associated wiring should be covered so water or steam flow cannot reach them. The controls should be high enough above the bottom of the cabinet so they will not be subject to flooding or splashing during normal cleaning procedures. If necessary, shield the controls to protect them from splashing water. A NEMA 4 enclosure is recommended for the ignition module; see the Electronic Ignition Service Manual, form 70-6604.

HIGH HUMIDITY OR DRIPPING WATER

Over time, dripping water or high ambient humidity can create unwanted electrical paths on the module circuit board, causing the module to fail. Never install an appliance where water can drip on the controls.

In addition, high ambient humidity can cause the gas control to corrode, and finally to fail.

Where the appliance may be installed in a humid atmosphere, make sure air circulation around the module and gas control is adequate to prevent condensation. It’s also important to regularly check out the system. A NEMA 4 enclosure may be needed; see the Electronic Ignition Service Manual, form 70-6604.

J.A.

Form Number 69-0463

11-89

©Honeywell Inc. 1989.

CORROSIVE CHEMICALS

Corrosive chemicals can also attack the module and gas control and eventually cause a failure. Where chemicals may be used routinely for cleaning, make sure the cleaning solution cannot reach the controls. Where chemicals are likely to be suspended in air, as in some industrial and agricultural applications, protect the ignition module from exposure with a NEMA 4 enclosure; see the Electronic Ignition Service Manual, form 70-6604.

DUST OR GREASE ACCUMULATION

Heavy accumulation of dust or grease may cause the controls to malfunction. Where dust or grease may be a problem, provide covers for the module and the gas control

that will limit environmental contamination. A NEMA 4 enclosure is recommended for the ignition module; see the Electronic Ignition Service Manual, form 70-6604.

HEAT

The controls can be damaged by excessively high temperatures. Make sure the maximum ambient temperature at the control locations will not exceed the rating of the control. If the appliance normally operates at very high temperatures, insulation, shielding, and air circulation may be necessary to protect the controls. Proper insulation or shielding should be provided by the appliance manufacturer; make sure adequate air circulation is maintained when the appliance is installed.

INSTALLATION

WHEN INSTALLING THIS IGNITION SYSTEM…

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

2.Check the ratings given in the instructions and on the components to make sure they are suitable for your application.

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

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

WARNING

FIRE OR EXPLOSION HAZARD.

CAN CAUSE SERIOUS INJURY OR DEATH.

1.The ignition module can malfunction if it gets wet, leading to accumulation of explosive gas.

Never install where water can flood, drip or condense on module.

Never try to use a module that has been wet—replace it.

2.Liquefied petroleum (LP) gas is heavier than air and will not vent upward naturally.

Do not light pilot or operate electric switches, lights, or appliances until you are sure the appliance area is free of gas.

CAUTION

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

2.If a new gas control is to be installed, turn off gas supply before starting installation. Conduct Gas Leak Test according to gas control manufacturer’s instructions after the gas control is installed.

3.If module must be mounted near moisture or water, provide suitable waterproof enclosure.

PERFORM PREINSTALLATION SAFETY INSPECTION

The preinstallation checks described in ANSI Standard Z21.71 on page 19 must be done before the replacement module is installed. If a condition which could result in unsafe operation is detected, the appliance should be shut off and the owner advised of the unsafe condition. Any potentially unsafe condition must be corrected before proceeding with the installation.

Maintenance Requirements in Severe Environments

Regular preventive maintenance is important in any application, but especially so in commercial cooking, agricultural, and industrial applications because:

In many such applications, particularly commercial cooking, the equipment operates 100,000-200,000 cycles per year. Such heavy cycling can wear out the gas control in one to two years. A normal forced air furnace, for which the controls were originally intended, typically operates less than 20,000 cycles per year.

Exposure to water, dirt, chemicals, and heat can damage the module or the gas control and shut down the control system. A NEMA 4 enclosure can reduce exposure to environmental contaminants. See Elec-

tronic Ignition Service Manual, form 70-6604.

The maintenance program should include regular checkout of the system as outlined under Checkout, page 11.

WARNING

FIRE OR EXPLOSION HAZARD

MAY CAUSE PROPERTY DAMAGE, SEVERE INJURY OR DEATH

Do not attempt to take the module apart or to clean it. Improper reassembly and cleaning may cause unreliable operation.

Maintenance frequency must be determined individually for each application. Some considerations are:

Cycling frequency. Appliances that may cycle more than 20,000 times annually should be checked monthly.

Intermittent use. Appliances that are used seasonally should be checked before shutdown and again before the next use.

Consequence of unexpected shutdown. Where the cost of an unexpected shutdown would be high, the system should be checked more often.

Dusty, wet, or corrosive environment. Since these environments can cause the controls to deteriorate more rapidly, the system should be checked more often.

Any control should be replaced if it does not perform properly on checkout or troubleshooting. In addition, replace any module if it is wet or looks like it has ever been wet. Protective enclosures as outlined under “Planning the Installation” are recommended regardless of checkout frequency.

MOUNT IGNITION MODULE

Select a location close enough to the burner to allow a short (3 ft. [0.9 m] max.), direct cable route to the igniter. Ambient temperature at the module must be within the range listed under APPLICATION, page 1. The module must be protected from water, moisture, corrosive chemicals and excessive dust and grease.

2

We recommend mounting the module with the terminals down to protect them from dripping water and dust. It can also be mounted with the terminals on either side. DO NOT MOUNT with terminals pointing up. Fasten securely with four No. 6-32 machine or No. 8 sheetmetal screws.

MOUNT THE SYSTEM CONTROLS

Mount any required controls, such as the gas control, spark igniter, flame sensor, thermostat, limit and transformer according to manufacturer’s instructions.

WIRE THE SYSTEM

CAUTION

1.Check the wiring diagram furnished by the appliance manufacturer, if available, for circuits differing from the wiring hookups shown. Carefully follow any special instructions affecting the general procedures outlined below.

2.Disconnect the power supply before making wiring connections to prevent electrical shock or equipment damage.

IMPORTANT

1.As shown in the wiring diagrams, a common ground is required on:

a.The pilot burner mounting bracket, and

b.The GND(BURNER) terminal on the ignition module. Failure to use the GND(BURNER) terminal may result in intermittent loss of spark and/or loss of flame current sensitivity.

2.Make sure the transformer has adequate VA. The ignition module requires at least 0.2 A at 24 Vac. Add the current draws of all other devices in the control circuit, including the pilot and main valves in the gas control, and multiply by 24 to determine the total VA requirement of these components. Add this total to 4.8 VA (for the ignition module). The result is the minimum transformer VA rating. Use a Class II transformer if replacement is required.

Connect Ignition Cable

Use Honeywell ignition cable or construct an ignition cable that conforms to suitable national standards such as Underwriters Laboratories Inc. See Tables 2 and 3.

TABLE 2—HONEYWELL PREASSEMBLED IGNITION

CABLES (UL STYLE 3257).

CABLE

 

 

 

 

 

 

 

 

 

 

PART

 

 

 

 

MODULE

 

IGNITER

NUMBER

LENGTH

 

END

 

END

 

 

394800-30

 

30 in.

 

1/4 in. quick

 

Rajah connec-

 

 

 

 

 

connect,

 

tor receptacle,

 

 

 

 

 

insulated

 

90 deg. rubber

 

 

 

 

 

 

 

 

boot

 

 

394801-30

 

30 in.

 

1/4 in. quick

 

Rajah connec-

 

 

 

 

 

connect,

 

tor receptacle,

 

 

 

 

 

insulated

 

straight rubber

 

 

 

 

 

 

 

 

boot

 

 

 

 

 

 

 

 

 

TABLE 3—RECOMMENDED IGNITION CABLE FOR

 

 

 

FIELD ASSEMBLY.

 

 

 

 

 

 

 

 

 

TEMPERATURE

CABLE

 

VOLTAGE

 

 

RATING

TYPE

 

RATING (rms)

 

 

C

 

F

 

UL Style 3217

 

 

10,000

 

150

 

302

UL Style 3257

 

 

10,000

 

250

 

484

 

 

 

 

 

 

 

 

 

 

 

Cable must be no longer than 36 in. [0.9 m]. To construct a cable, fit one end of ignition cable with 1/4 in. diameter Rajah connector receptacle and the other with a 1/4 in. female quick connect. Protect both ends with insulated boots.

NOTE: The cable must not run in continuous contact with a metal surface or spark voltage will be greatly reduced. Use ceramic or plastic standoff insulators as required.

To install:

1.Connect one end of the cable to the male quick connect SPARK terminal on the ignition module.

2.Connect the other end of the cable to the igniter or igniter-sensor stud on the pilot burner/igniter-sensor.

Connect Vent Damper

The D80B Vent Damper can be used with all ignition modules, although the Molex plug provided on some modules simplifies wiring connections when used with the D80D Plug-In Vent Damper. Once a module with vent damper plug has powered a vent damper circuit, it cannot be used in a gas system without a vent damper. A non-replaceable fuse in the module blows on initial power-up. Once this fuse has blown the module won’t work unless the vent damper is connected.

To connect the plug-in model to D80D:

1.Remove the plug from the terminal strip on the ignition module case and discard.

2.Using the wiring harness supplied, insert the matching pin plug into receptacle on case and other end to vent damper.

To connect the D80B, follow the wiring diagrams supplied with the vent damper or see Fig. 7 for typical connections.

Connect Ignition Module

1.Connect remaining system components to the ignition module terminals as shown in the appropriate wiring diagram, Figs. 1 to 10.

Fig. 1 is a basic circuit for a heating only atmospheric burner with S8600F,H,M; S8610F,H; S8660D or S8670D.

Fig. 2 shows S8600F,H,M; S8610F,H with vent damper plug in a heating only atmospheric burner system with D80D vent damper. Never use a vent damper in an LP gas system or in a fan-assisted combustion system.

Figs. 3 and 4 show S8600A,B; S8610A,B with separate sensor and igniter, with and without the D80D vent damper.

Figs. 5-10 show S8600F,H,M; S8610F,H; S8660D; and S8670D in a variety of systems, with alternate connections for modules with vent damper plug. Remember, however, that a vent damper should not be used in an fan-assisted combustion system or an LP gas system and that the vent damper plug must not be removed except to connect the module to a D80D with the plug-in cable. S8600A,B; S8610A,B can be substituted in these drawings by simply connecting the igniter and sensor as shown in Figs. 3 and 4.

2.Refer to heating appliance manufacturer’s instructions for wiring auxiliary controls.

3.Adjust thermostat heat anticipator to match system current draw. The current draw equals the total current required for the ignition module (0.2 A) plus the gas control and any other auxiliary equipment in the control circuit.

Connect Gas Control

Use No 18 gauge solid or stranded wire. Use 1/4 in. female quick connects for module connections. Connect to gas control terminals as shown in wiring diagrams, using terminals appropriate to the gas control.

3

69-0463

Ground Control System

The igniter, flame sensor and ignition module must share a common ground with the main burner. Use thermoplastic insulated wire with a minimum rating of 105° C [221° F] for the ground wire; asbestos insulation is not acceptable. If necessary, use a shield to protect the wire from radiant heat generated by the burner. Connect the ground wire as follows:

1.Fit one end of the ground wire with a female 1/4 in. quick-connect terminal and connect it to the male quickconnect GND(BURNER) terminal on the ignition module.

2.Strip the other end of the wire and fasten it under the igniter bracket mounting screw. If necessary, use a shield to protect the ground wire from radiant heat.

3.The burner serves as the common grounding area. If there is not good metal-to-metal contact between the burner and ground, run a lead from the burner to ground.

NOTE: “Earth” ground is not required.

REPLACING MODULE WITH TH-R, TH-W TERMINALS

On modules that do not have a vent damper plug, the thermostat must be connected between the transformer

and the 24V terminal on the module. To change out a module with TH-R, TH-W terminals:

1.Remove the wires from the 25V(2) and TH-R terminals on the old module. Connect these two wires with a solderless connector.

2.Tag and remove the remaining wires from the old module.

3.Remove the old module and mount the new one in the same location.

4.Reconnect the remaining wires as shown in Table 4.

5.Increase the thermostat anticipator setting by 0.2 A.

TABLE 4—TERMINAL CROSS REFERENCE.

TERMINAL ON

TERMINAL ON

OLD MODULE:

NEW MODULE:

25 V (1)

24 V (GND)

TH-W

24 V

MV

MV

MV/PV

MV/PV

PV

PV

GND (Burner)

GND (Burner)

 

 

 

S8600F,H,M; S8610F,H; S8660D; S8670D

 

 

VENT

 

 

 

 

 

 

 

5

 

 

 

 

GND

24V

 

TH-W

DAMPER

 

 

MV

MV/PV PV

(BURNER)

GND

24V

(OPT)

PLUG (OPT)

SPARK

 

 

 

 

 

 

5

 

3

 

 

 

 

 

 

 

 

 

 

MAIN

 

 

 

 

 

 

PILOT

COM

VALVE

 

 

 

 

 

4

 

 

 

 

 

 

 

 

1ST

2ND

 

 

 

OPERATOR

OPERATOR

 

2

 

 

 

THERMOSTAT

 

DUAL VALVE COMBINATION

 

 

 

 

 

GAS CONTROL

 

 

 

 

 

 

LIMIT

 

 

 

 

CONTROLLER

 

 

 

 

L1

L2

 

 

PILOT BURNER

(HOT)

Q345, Q346,

 

1

GROUND

 

Q348, Q362, Q381

 

 

 

 

 

PILOT BURNER/

PILOT GAS

 

 

IGNITER-SENSOR

 

 

 

 

SUPPLY

 

 

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2 ALTERNATE LIMIT CONTROLLER LOCATION.

3MAXIMUM CABLE LENGTH 3 ft [0.9 m].

4CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO TRANSFORMER.

5FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG, CONNECT THERMOSTAT TO TH-W. LEAVE 24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.

M1175C

Fig. 1—S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating system with an atmospheric burner.

4

S8600F,H,M; S8610F,H

5VENT

 

 

GND

24V

 

 

DAMPER

 

 

MV

MV/PV PV (BURNER)

GND

24V

TH-W

PLUG

SPARK

 

 

 

 

 

 

197516A

3

 

 

MAIN

 

 

 

WIRING

 

 

 

 

 

 

HARNESS

 

PILOT

COM

VALVE

 

 

 

 

 

1ST

2ND

 

 

 

 

OPERATOR

OPERATOR

THERMO-

 

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS

 

 

STAT

 

 

AND OVERLOAD PROTECTION AS REQUIRED.

DUAL VALVE COMBINATION

 

D80D VENT

2

ALTERNATE LIMIT CONTROLLER LOCATION.

GAS CONTROL

2

DAMPER

 

 

 

 

Q345, Q346,

PILOT BURNER

Q348, Q362, Q381

GROUND

PILOT BURNER/

 

IGNITER-SENSOR

PILOT GAS

 

SUPPLY

 

LIMIT

3

MAXIMUM CABLE LENGTH 3 FEET [0.9 METERS].

 

 

 

4

CONTROLLER

4

CONTROLS IN 24V CIRCUIT MUST NOT BE IN

 

L1

 

 

GROUND LEG TO TRANSFORMER.

 

(HOT)

 

 

1

 

 

 

 

 

L2

5

REMOVE PLUG ONLY IF USING VENT DAMPER.

 

 

 

FUSE BLOWS ON STARTUP WHEN PLUG IS REMOVED;

 

 

 

THEN MODULE WILL OPERATE ONLY WHEN VENT

 

 

 

DAMPER IS CONNECTED.

M1176D

Fig. 2—S8600F,H,M; S8610F,H with a vent damper plug in a heating system with an atmospheric burner and a D80D vent damper.

 

 

 

S8600A,B; S8610A,B

 

 

 

5 VENT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

24V

 

TH-W

DAMPER

 

 

 

 

 

MV

MV/PV PV

(BURNER)

GND

24V

(OPT)

PLUG (OPT)

SENSE

SPARK

 

 

 

 

 

 

 

 

5

 

 

3

 

 

 

 

MAIN

 

 

 

 

 

 

 

 

 

PILOT

COM

VALVE

 

 

 

 

 

 

 

 

 

1ST

2ND

 

 

 

 

THERMOSTAT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATOR

OPERATOR

 

 

 

 

 

 

 

 

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS

DUAL VALVE COMBINATION

 

 

 

2

 

 

 

GAS CONTROL

 

 

 

 

 

 

 

 

 

AND OVERLOAD PROTECTION AS REQUIRED.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 ALTERNATE LIMIT CONTROLLER LOCATION.

 

 

SENSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

3 MAXIMUM CABLE LENGTH 3 ft [0.9 m].

 

 

 

 

 

4

 

L2

 

 

 

 

 

 

 

 

 

 

L1

 

 

4 CONTROLS IN 24V CIRCUIT MUST NOT BE IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(HOT)

 

 

GROUND LEG TO TRANSFORMER.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIMIT

 

 

 

 

 

 

 

GROUND

 

 

 

 

5

FOR MODULE WITH TH-W TERMINAL AND VENT

IGNITER

 

 

 

CONTROLLER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DAMPER PLUG, CONNECT THERMOSTAT TO TH-W.

 

 

PILOT GAS

 

 

 

 

 

 

 

 

LEAVE 24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.

 

SUPPLY

 

 

 

 

 

 

 

M1186C

 

 

 

 

 

 

 

 

 

 

Fig. 3—S8600A,B; S8610A,B connections in a heating system with an atmospheric burner.

5

69-0463

Honeywell S8600, S8670, S8660, S8610 User Manual

S8600A,B; S8610A,B

 

 

 

VENT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

24V

 

 

DAMPER

 

 

 

MV

MV/PV PV

(BURNER)

GND

24V

TH-W

PLUG

5

SENSE

SPARK

PILOT

 

COM

MAIN

 

3

 

 

197516A

1ST

 

2ND

VALVE

 

WIRING

 

 

 

 

 

 

HARNESS

OPERATOR

OPERATOR

 

 

 

 

 

 

 

 

 

2

THERMOSTAT

DUAL VALVE COMBINATION

 

GAS CONTROL

 

 

 

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS

 

SENSOR

 

D80D VENT DAMPER

AND OVERLOAD PROTECTION AS REQUIRED.

 

 

 

 

 

 

 

 

2 ALTERNATE LIMIT CONTROLLER LOCATION.

 

 

 

 

1

 

 

 

 

L2

 

 

 

 

4

3 MAXIMUM CABLE LENGTH 3 FEET [0.9 METERS].

 

 

 

L1

 

 

 

 

4 CONTROLS IN 24V CIRCUIT MUST NOT BE IN

 

 

 

 

(HOT)

IGNITER

GROUND

 

LIMIT

GROUND LEG TO TRANSFORMER.

 

 

CONTROLLER

 

 

 

 

5 REMOVE PLUG ONLY IF USING VENT DAMPER.

 

 

PILOT GAS

 

 

 

 

SUPPLY

 

 

 

 

 

 

 

M1185D

 

 

 

 

 

Fig. 4—S8600A,B; S8610A,B with vent damper plug in an atmospheric burner heating system with a D80D vent damper.

 

S8600F,H,M; S8610F,H; S8660D; S8670D

 

5

VENT

 

 

 

 

 

 

 

 

 

GND

24V

 

TH-W

DAMPER

 

 

MV

MV/PV PV (BURNER)

GND

24V

(OPT)

PLUG (OPT)

SPARK

 

 

 

 

 

5

 

3

 

 

MAIN

 

 

AIR

THERMOSTAT

 

PILOT

COM

VALVE

 

 

PROVING

 

1ST

2ND

 

 

 

SWITCH

 

 

 

 

 

 

 

 

OPERATOR

OPERATOR

 

 

 

 

 

 

DUAL VALVE COMBINATION

 

 

 

 

2

 

 

 

 

 

GAS CONTROL

 

 

 

 

 

 

 

 

COMBUSTION

 

 

 

 

 

AIR BLOWER

 

4

 

 

 

RELAY

 

 

 

 

 

 

LIMIT

 

 

L1

 

 

CONTROLLER

 

PILOT

(HOT)L2

COMBUSTION

 

 

 

1

AIR BLOWER

 

 

Q345, Q346,

BURNER

 

MOTOR

L2

L1

Q348, Q362, Q381

GROUND

 

 

(HOT)

PILOT BURNER/

 

 

 

1

 

 

 

 

IGNITER-SENSOR

PILOT GAS

 

 

 

 

 

 

 

SUPPLY

1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2 ALTERNATE LIMIT CONTROLLER LOCATION.

3MAXIMUM CABLE LENGTH 3 ft [0.9 m].

4CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO TRANSFORMER.

5FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG, CONNECT THERMOSTAT TO TH-W.

LEAVE 24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.

M1177C

Fig. 5—S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating system with power-assisted combustion.

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