INTERMITTENT PILOT MODULES
S8600, S8610, S8660, S8670
APPLICATION
Theseignitionmodulesprovideignitionsequence,flame
monitoring and safety shutoff for intermittent pilot central
furnaces and heating appliances. S8600 and S8660 mod-
els 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
Amainvalvecurrentrating. Minimumambienttemperature
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
OF GAS
Natural
PREPURGE
TIMING
None
PERCENT
LOCKOUT
TIMING
No
IGNITION
MODEL
S8600A,
S8610A
S8600F,
S8610F
TYPE
Separate
SHUTOFF
SEQUENCEa
No
Spark on until pilot
lightoff or manual
shutoff; pilot valve
open until manual
shutdown.
Combination
S8600B,
S8610B
S8600H,
S8610H
S8600M
Separate
Natural
or LP
None
None
Yes, at
lockout
15 or 90
sec. max.,
as ordered
Spark on until
lightoff or lockout;
pilot valve closes
on lockout.
Spark and pilot gas
on until shutoff.
After 5 min. min.
(6 min. nom.) delay,
ignition starts again.
Ignition, wait, retry
repeats until pilot
lights or system is
shut down manually.
Ignition trial follows
prepurge; spark on
until lightoff or
Combination
Combination
Natural
or LP
Yes, at 90
sec. max.
No,
continuous
retry
S8660D,
S8670D
Combination
Natural
or LP
45 sec.
Yes, at
lockout
15 or 90
sec. max.,
as ordered
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 appli-
cations may make heavy demands on the controls, either
because of frequent cycling, or because of moisture, corro-
sive chemicals, dust or excessive heat in the environment.
In these situations, special steps may be required to pre-
vent nuisance shutdowns and premature control failure.
These applications require Honeywell Residential Division
Engineering review; contact your Honeywell Sales Repre-
sentative for assistance.
likely to be cleaned with water or steam, the controls and
associatedwiringshouldbecoveredsowaterorsteamflow
cannot reach them. The controls should be high enough
above the bottom of the cabinet so they will not be subject
tofloodingorsplashingduringnormalcleaningprocedures.
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,causingthemoduletofail. Neverinstallanappliance
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 atmos-
phere, makesureaircirculationaroundthemoduleandgas
control is adequate to prevent condensation. It’s also im-
portant to regularly check out the system. A NEMA 4
enclosure may be needed; see the Electronic Ignition
Service Manual, form 70-6604.
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
closertoyear-rounduse,werecommendmonthlycheckout
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
J.A.
11-89
Form Number 69-0463
©Honeywell Inc. 1989.
Download from Www.Somanuals.com. All Manuals Search And Download.
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.
Cablemustbenolongerthan36in. [0.9m]. Toconstruct
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.
MOUNT THE SYSTEM CONTROLS
Mount any required controls, such as the gas control,
spark igniter, flame sensor, thermostat, limit and trans-
former according to manufacturer’s instructions.
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.
WIRE THE SYSTEM
CAUTION
1. Check the wiring diagram furnished by the appli-
ance manufacturer, if available, for circuits differ-
ing from the wiring hookups shown. Carefully
follow any special instructions affecting the gen-
eral procedures outlined below.
Connect Vent Damper
The D80B Vent Damper can be used with all ignition
modules, although the Molex plug provided on some mod-
ulessimplifieswiringconnectionswhenusedwiththeD80D
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. Removetheplugfromtheterminalstripontheignition
module case and discard.
2. Usingthewiringharnesssupplied,insertthematching
pin plug into receptacle on case and other end to vent
damper.
To connect the D80B, follow the wiring diagrams sup-
plied with the vent damper or see Fig. 7 for typical connec-
tions.
2. Disconnect the power supply before making wir-
ing 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) termi-
nal 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 re-
quired.
Connect Ignition Module
1. Connectremainingsystemcomponentstotheignition
module terminals as shown in the appropriate wiring dia-
gram, Figs. 1 to 10.
•
Fig. 1 is a basic circuit for a heating only atmos-
pheric 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.
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.
•
•
Figs. 3 and 4 show S8600A,B; S8610A,B with
separate sensor and igniter, with and without the
D80D vent damper.
TABLE 2—HONEYWELL PREASSEMBLED IGNITION
CABLES (UL STYLE 3257).
Figs.5-10showS8600F,H,M;S8610F,H;S8660D;
andS8670Dinavarietyofsystems, withalternate
connections for modules with vent damper plug.
Remember, however, that a vent damper should
notbeusedinanfan-assistedcombustionsystem
oranLPgassystemandthattheventdamperplug
must not be removed except to connect the mod-
ule to a D80D with the plug-in cable. S8600A,B;
S8610A,Bcanbesubstitutedinthesedrawingsby
simplyconnectingtheigniterandsensorasshown
in Figs. 3 and 4.
CABLE
PART
NUMBER LENGTH
MODULE
END
IGNITER
END
394800-30
30 in.
1/4 in. quick
connect,
insulated
Rajah connec-
tor receptacle,
90 deg. rubber
boot
394801-30
30 in.
1/4 in. quick
connect,
insulated
Rajah connec-
tor receptacle,
straight rubber
boot
2. Refer to heating appliance manufacturer’s instruc-
tions 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.
TABLE 3—RECOMMENDED IGNITION CABLE FOR
FIELD ASSEMBLY.
TEMPERATURE
CABLE
TYPE
UL Style 3217
UL Style 3257
VOLTAGE
RATING (rms)
10,000
RATING
Connect Gas Control
C
F
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.
150
250
302
484
10,000
3
69-0463
Download from Www.Somanuals.com. All Manuals Search And Download.
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 termi-
nals 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.
Ground Control System
The igniter, flame sensor and ignition module must
share a common ground with the main burner. Use thermo-
plastic insulated wire with a minimum rating of 105° C [221°
F] for the ground wire; asbestos insulation is not accept-
able. 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 quick-
connect 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.
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
OLD MODULE:
25 V (1)
TERMINAL ON
NEW MODULE:
24 V (GND)
24 V
3. The burner serves as the common grounding area. If
thereisnotgoodmetal-to-metalcontactbetweentheburner
and ground, run a lead from the burner to ground.
TH-W
MV
MV
NOTE: “Earth” ground is not required.
MV/PV
MV/PV
PV
PV
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
GND (Burner)
GND (Burner)
S8600F,H,M; S8610F,H; S8660D; S8670D
VENT
DAMPER
PLUG (OPT)
5
GND
(BURNER)
24V
GND
TH-W
(OPT)
MV MV/PV PV
24V
SPARK
3
5
MAIN
VALVE
PILOT
1ST
COM
2ND
4
OPERATOR OPERATOR
2
THERMOSTAT
DUAL VALVE COMBINATION
GAS CONTROL
LIMIT
CONTROLLER
L1
(HOT)
L2
PILOT BURNER
GROUND
Q345, Q346,
1
Q348, Q362, Q381
PILOT BURNER/
IGNITER-SENSOR
PILOT GAS
SUPPLY
1
2
3
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND
LEG TO TRANSFORMER.
4
5
FOR 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
Download from Www.Somanuals.com. All Manuals Search And Download.
S8600F,H,M; S8610F,H
VENT
DAMPER
PLUG
5
GND
(BURNER)
24V
GND
MV MV/PV PV
24V TH-W
SPARK
197516A
WIRING
3
MAIN
VALVE
HARNESS
PILOT
1ST
COM
2ND
THERMO-
STAT
OPERATOR OPERATOR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
DUAL VALVE COMBINATION
GAS CONTROL
D80D VENT
DAMPER
2
3
4
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM CABLE LENGTH 3 FEET [0.9 METERS].
2
LIMIT
CONTROLLER
4
CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
L1
(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.
Q345, Q346,
PILOT BURNER
GROUND
Q348, Q362, Q381
PILOT BURNER/
IGNITER-SENSOR
PILOT GAS
SUPPLY
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
VENT
DAMPER
PLUG (OPT)
5
GND
24V
GND
TH-W
(OPT)
24V
(BURNER)
MV MV/PV PV
SENSE SPARK
3
5
MAIN
VALVE
PILOT
1ST
COM
2ND
THERMOSTAT
OPERATOR OPERATOR
DUAL VALVE COMBINATION
GAS CONTROL
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
1
2
SENSOR
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
1
L2
L1
3
4
4
CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
(HOT)
LIMIT
CONTROLLER
GROUND
IGNITER
5
FOR MODULE WITH TH-W TERMINAL AND VENT
DAMPER PLUG, CONNECT THERMOSTAT TO TH-W.
LEAVE 24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.
PILOT GAS
SUPPLY
M1186C
Fig. 3—S8600A,B; S8610A,B connections in a heating system with an atmospheric burner.
5
69-0463
Download from Www.Somanuals.com. All Manuals Search And Download.
S8600A,B; S8610A,B
VENT
DAMPER
PLUG
GND
(BURNER)
24V
GND
5
MV MV/PV PV
24V
TH-W
SENSE
SPARK
3
MAIN
VALVE
PILOT
1ST
COM
2ND
197516A
WIRING
HARNESS
OPERATOR OPERATOR
THERMOSTAT
DUAL VALVE COMBINATION
GAS CONTROL
2
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS
SENSOR
D80D VENT DAMPER
AND OVERLOAD PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM CABLE LENGTH 3 FEET [0.9 METERS].
1
L2
4
3
4
L1
(HOT)
CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
LIMIT
CONTROLLER
GROUND
IGNITER
PILOT GAS
SUPPLY
5
REMOVE PLUG ONLY IF USING VENT DAMPER.
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
VENT
DAMPER
PLUG (OPT)
5
GND
(BURNER)
24V
GND
TH-W
(OPT)
MV MV/PV PV
24V
SPARK
3
5
THERMOSTAT
MAIN
VALVE
AIR
PROVING
SWITCH
PILOT
1ST
COM
2ND
OPERATOR OPERATOR
2
DUAL VALVE COMBINATION
GAS CONTROL
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
COMBUSTION
AIR BLOWER
RELAY
2
3
4
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
4
CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
LIMIT
CONTROLLER
L1
(HOT)
5
FOR MODULE WITH TH-W TERMINAL AND VENT
L2
DAMPER PLUG, CONNECT THERMOSTAT TO TH-W.
LEAVE 24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.
COMBUSTION
AIR BLOWER
MOTOR
PILOT
BURNER
GROUND
1
Q345, Q346,
L1
(HOT)
L2
1
Q348, Q362, Q381
PILOT BURNER/
IGNITER-SENSOR
PILOT GAS
SUPPLY
M1177C
Fig. 5—S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating system with power-assisted combustion.
6
Download from Www.Somanuals.com. All Manuals Search And Download.
S8600F,H,M; S8610F,H; S8660D; S8670D
VENT
DAMPER
PLUG (OPT)
5
GND
(BURNER)
24V
GND
TH-W
(OPT)
MV MV/PV PV
24V
SPARK
3
5
AIR
PROVING
SWITCH
VALVE
MAIN
STAGE 2
MAIN
VALVE
STAGE 1
THERMOSTAT
GROUND
2ND
PILOT
COM
R
W2 W1
1ST
OPERATOR
OPERATOR
Q345, Q346,
2
Q348, Q362,
Q381PILOT
BURNER/
IGNITER-
TWO STAGE DUAL VALVE
COMBINATION GAS CONTROL
PILOT
BURNER
GROUND
COMBUSTION
AIR BLOWER
RELAY
SENSOR
PILOT GAS
SUPPLY
4
LIMIT
CONTROLLER
COMBUSTION
AIR BLOWER
MOTOR
L1
(HOT)
L2
1
1
L2
L1
(HOT)
M1178C
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
1
2
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
3
4
CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO TRANSFORMER.
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG, CONNECT THERMOSTAT TO TH-W. LEAVE
24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.
5
Fig. 6—S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating system with a two-stage gas control and
power-assisted combustion.
7
69-0463
Download from Www.Somanuals.com. All Manuals Search And Download.
S8600F,H,M; S8610F,H; S8660D; S8670D
VENT
DAMPER
PLUG (OPT)
5
GND
(BURNER)
24V
GND
TH-W
(OPT)
MV MV/PV PV
24V
SPARK
3
5
D80B
MAIN
VALVE
PILOT
1ST
COM
2ND
END SWITCH
N.O. N.C.
OPERATOR OPERATOR
1K2
DUAL VALVE COMBINATION
GAS CONTROL
1K1
R
1K
1K3
Q345, Q346,
Q348, Q362, Q381
PILOT BURNER/
IGNITER-SENSOR
2
3
4
5
1
6
PILOT
BURNER
GROUND
PILOT GAS
SUPPLY
4
TRANSFORMER
THERMOSTAT
OR
CONTROLLER
L2
L1
(HOT)
LIMIT
CONTROLLER
2
LIMIT
CONTROLLER
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
2
3
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
4
5
CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO TRANSFORMER.
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG, CONNECT THERMOSTAT TO TH-W.
LEAVE 24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.
6
COLORS REFER TO WIRE HARNESS, IF USED.
M1180C
Fig. 7—S8600F,H,M; S8610F,H; S8660D; S8670D in a heating system with an atmospheric burner and a D80B vent
damper.
8
Download from Www.Somanuals.com. All Manuals Search And Download.
S8600F,H,M; S8610F,H; S8660D; S8670D
VENT
DAMPER
PLUG (OPT)
5
GND
24V
TH-W
(OPT)
(BURNER)
GND
MV MV/PV PV
24V
SPARK
3
5
MAIN
PILOT
1ST
COM
2ND
VALVE
OPERATOR OPERATOR
DUAL VALVE COMBINATION
GAS CONTROL
Q345, Q346,
Q348, Q362,
Q381PILOT
BURNER/
IGNITER-
L1
(HOT)
L2
L2 L1
(HOT)
PILOT
BURNER
GROUND
THERMOSTAT
1
1
R
G
COMBUSTION
AIR BLOWER
MOTOR
PILOT GAS
SUPPLY
SENSOR
W
Y
R8239
FAN
LIMIT
CENTER
CON-
COMBUSTION
AIR BLOWER
RELAY
TROLLER
R
C
Y
4
G
W
COIL
2
AIR PROVING
SWITCH
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
COOLING
CONTROL
PRESSURE
CONTROLLER
3
4
CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
FAN
MOTOR
5
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER
PLUG, CONNECT THERMOSTAT TO TH-W. LEAVE
24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.
FAN
CONTROL
L
C
H
M1182C
Fig. 8—S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating-cooling system with power-assisted
combustion.
9
69-0463
Download from Www.Somanuals.com. All Manuals Search And Download.
S8600F,H,M; S8610F,H; S8660D; S8670D
VENT
DAMPER
PLUG (OPT)
4
GND
24V
TH-W
(OPT)
(BURNER)
GND
MV MV/PV PV
24V
SPARK
3
4
PILOT
1ST
COM
2ND
MAIN
VALVE
OPERATOR OPERATOR
D80D
DUAL VALVE COMBINATION
GAS CONTROL
1K
1K1
Q345, Q346,
Q348, Q362,
Q381PILOT
BURNER/
IGNITER-
D80 MOTOR
PILOT
BURNER
GROUND
N.C.
N.O.
1K2
PILOT GAS
SUPPLY
C.
1K3
SENSOR
4
3
2
1
CABLE
2
BLUE
YELLOW
BLACK
ORANGE
L8148J
G
L1
(HOT)
L1
1
TP
Z
B
R
1K1
5
1K
W
T
TV
AUTO
MANUAL
SWITCH
1K3
1K2
FAN
MOTOR
C1
C2
B3
B2
B1
L2
L2
M1181C
THERMOSTAT
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
CUT PLUG OFF MODULE END OF D80D WIRE HARNESS, CONNECT LEADWIRE COLORS AS SHOWN.
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
3
4
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG, CONNECT THERMOSTAT TO TH-W.
LEAVE 24V OPEN. DO NOT REMOVE VENT DAMPER PLUG.
5
LEAVE TP-Z AND Z-W JUMPERS IN PLACE.
Fig. 9—S8600F,H,M;S8610F, H;S8660D;S8670DconnectionsinahydronicheatingsytemwithaD80Dventdamper.
10
Download from Www.Somanuals.com. All Manuals Search And Download.
S8610
U
VENT
DAMPER
PLUG
4
TH-W
(OPT)
GND
(BURNER)
24V
GND
M
MV/P PV
24
SPARK
SENSE
5
6
3
MAIN
L8100
VALVE
PILOT
COM
2ND
2
1ST
ECO
CONTROLLER
OPERATOR OPERATOR
DUAL VALVE COMBINATION
GAS CONTROL
4
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION AS
REQUIRED.
1
L 2
L1
(HOT)
2
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
3
4
CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
GROUND
PILOT GAS
SUPPLY
5
6
DO NOT REMOVE VENT DAMPER PLUG.
REMOVE JUMPER AND CONNECT SENSE
TERMINAL ON TWO ROD APPLICATION ONLY.
M1179A
Fig. 10—S8600F,H,M; S8610F,H; S8660D; S8670D connections in a commercial water heater control system.
CHECKOUT
Check out the gas control system:
disturbed.
•
•
At initial installation of the appliance.
As part of regular maintenance procedures. Mainte-
nance intervals are determined by the application.
See PLANNING THE INSTALLATION, page 1, for
more information.
GASLEAKTEST:Paintpipejointswithrichsoapandwater
solution. Bubbles indicate gas leak. Tighten joints to stop
leak. Recheck with soap and water.
STEP 2: Review Normal Operating Sequence and Module
Specifications.
❏ See OPERATION, page 12, and APPLICATION,
•
•
As the first step in troubleshooting.
Any time work is done on the system.
page 1.
STEP 3: Reset the Module.
❏ Turn the thermostat to its lowest setting.
❏ Wait one minute.
As you do Steps 4 and 5, watch for points where operation
deviates from normal. Refer to Troubleshooting Chart to
correct problem.
WARNING
FAILURE TO HEED THESE WARNINGS MAY
CAUSE FIRE OR EXPLOSION WITH PROPERTY
DAMAGE, INJURY, OR LOSS OF LIFE.
1. If you smell gas or suspect a gas leak, turn off
gas at manual service valve and evacuate the
building. Do not try to light any appliance, do
not touch any electrical switch or telephone in
the building until you are sure no spilled gas
remains.
STEP 4: Check Safety Shutoff Operation.
This step applies to lockout and continuous retry modules
only.
❏ Turn gas supply off.
❏ Set thermostat or controller above room temperature to
call for heat.
❏ Watch for spark at pilot burner either immediately or
following prepurge. See device label.
❏ Time spark from start to shutoff. See device label.
On S8600M, wait 6 min. nom. Ignition sequence should
start again followed by shutoff after 90 sec. max.
❏ Open manual gas cock and make sure no gas is flowing
to pilot or main burner.
2. Gas leak test must be done as described in
Steps 1 and 5 below on initial installation and
any time work is done involving the gas pip-
ing.
STEP 1: Perform Visual Inspection.
❏ With power off, make sure all wiring connections are
clean and tight.
❏ Turn on power to appliance and ignition module.
❏ Open manual shutoff valves in the gas line to the
appliance.
❏ Set thermostat below room temperature and wait one
minute before continuing.
STEP 5: Check Normal Operation.
❏ Set thermostat or controller above room temperature to
❏ Do gas leak test ahead of gas control if piping has been
11
Download from Www.Somanuals.com. All Manuals Search And Download.
69-0463
call for heat.
❏ If gas line has been disturbed, complete gas leak test.
GAS LEAK TEST: Paint gas control gasket edges and all
pipeconnectionsdownstreamofgascontrol, includingpilot
tubing connections, with rich soap and water solution.
Bubbles indicate gas leaks. Tighten joints and screws or
replace component to stop gas leak. Recheck with soap
and water.
❏ Make sure pilot lights smoothly when gas reaches the
pilot burner.
❏ Make sure main burner lights smoothly without flash-
back.
❏ Make sure burner operates smoothly without floating,
lifting, or flame rollout to the furnace vestibule or heat
buildup in the vestibule.
❏ Turn thermostat or controller below room temperature.
Make sure main burner and pilot flames go out.
OPERATION
Module operation can be conveniently divided into two
phases for S8600, S8610 and three for S8660, S8670. The
phases are
PREPURGE (S8660,S8670 ONLY)
When the S8660 is used in a fan-assisted combustion
system, the combustion air blower starts on a call for heat.
On proof of airflow, the air proving switch closes and
energizes the S8660, S8670. When the module is used in
an atmospheric system, the call for heat energizes the
module.
In either case, the module first initiates a 45 sec. delay
toallowsystemprepurge. Afterprepurge, themodulestarts
the pilot ignition sequence.
•
•
•
Prepurge (S8660, S8670 only)
Trial for ignition (all models)
Main burner operation (all models)
Figs. 11 and 12 summarize the normal operating se-
quences of the modules.
1
2
1
START
THERMOSTAT (CONTROLLER)
CALLS FOR HEAT
STAGE 1
SPARK GENERATOR POWERED
First valve (pilot) operator opens
TRIAL FOR
IGNIITION
3
PILOT BURNER OPERATION
Pilot burner does not light.
Pilot burner lights.
Module senses
flame current.
Module
Response
OR
S8600A,F
S8610A,F
Ignition spark continues, pilot
valve remains open until system
is reset
a
S8600B,H
S8610B,H
After 15 or 90 sec system
locks out; must be
manually reset.
S8600M
a
After 90 sec. system shuts off;
after 5 minutes min. (6 minutes
nom.), module restarts trial for
ignition; ignition trial, shutoff, wait
sequence repeats until pilot lights
or call for heat ends.
a
Shutoff/lockout timing is stamped on module
4
FLAME CURRENT SENSED
Spark generator off.
Second valve operator (main)
opens.
STAGE 2
MAIN BURNER
OPERATION
POWER INTERRUPTION
System shuts off, restarts when power is
restored.
5
6
MAIN BURNER OPERATION
Module monitors pilot flame
current.
PILOT FLAME FAILURE
Main valve closes.
Module starts trial for ignition.
THERMOSTAT (CONTROLLER)
SATISFIED
Valves close, pilot and main
burners are off.
END
M1172B
Fig. 11—S8600, S8610 normal operating sequence.
12
Download from Www.Somanuals.com. All Manuals Search And Download.
TRIAL FOR IGNITION
Pilot Ignition
perature for one minute or by turning off power to the
module for one minute.
Followingprepurgetiming(S8660,S8670),oronthecall
for heat (S8600, S8610), the module energizes the first
main valve operator. The first main valve opens, which
allows gas to flow to the pilot burner. At the same time, the
electronic spark generator in the module produces an over
10,000 volt spark pulse output. The voltage generates a
sparkattheigniter(S8600A,B;S8610A,B)origniter-sensor
(S8600F,H,M; S8610F,H; S8660; S8670) that lights the
pilot.
If the pilot does not light, or the pilot flame current is not
at least 1.0 µA and steady, the module will not energize the
second (main) valve and the main burner will not light.
S8600A,F; S8610A,F will continue to spark as long as the
thermostat calls for heat, or until the pilot lights.
Safety Shutoff with Continuous Retry (S8600M)
The S8600M provides 100 percent gas shutoff, followed
by retry for ignition. Operation on ignition failure is the same
as lockout modules, except that a timer starts timing imme-
diately following shutoff. Six minutes nom. (five minutes
min.) after shutoff, the module restarts the ignition se-
quence. The ignition trial, shutoff, wait sequence continues
until either the pilot lights or the thermostat is set below
room temperature to end the call for heat. The module can
alsoberesetbysettingdownthethermostatforoneminute.
MAIN BURNER OPERATION
When the pilot flame is established, a flame rectification
circuitiscompletedbetweenthesensorandburnerground.
The flame sensing circuit in the module detects the flame
current, shuts off the spark generator and energizes the
second main valve operator. The second main valve opens
and gas flows to the main burner, where it is ignited by the
pilot burner. On lockout models, the flame current also
holds the safety lockout timer in the reset (normal) operat-
ing condition.
SafetyLockout(S8600B,H;S8610B,H;S8660D;S8670D)
These modules provide 100 percent shutoff and safety
lockout. A timer in these models starts timing the moment
the trial for ignition starts. Ignition spark continues only until
the timed trial for ignition period ends. Then the module
goes into safety lockout. Lockout de-energizes the first
main valve operator and closes the first main (pilot) valve in
the gas control, stopping pilot gas flow. The control system
must be reset by setting the thermostat below room tem-
Whenthecallforheatends, bothvalveoperatorsarede-
energized, and both valves in the gas control close.
START
1
THERMOSTAT
CALLS FOR HEAT
STAGE 1
2
3
PREPURGE
PREPURGE
Combustion air blower starts.
SPARK GENERATOR POWERED
STAGE 2
First valve (pilot) operator opens.
TRIAL FOR IGNITION
4
PILOT BURNER OPERATION
Pilot burner does not light.
After 15 or 90 sec , system
locks out; must be manually reset.
Pilot burner lights.
S8660, S8670 senses flame
current.
a
OR
a
Lockout timing is
stamped on module.
FLAME CURRENT SENSED
Spark generator off.
Second valve operator (main)
opens.
5
POWER INTERRUPTION
System shuts off, restarts when power is
restored.
STAGE 3
MAIN BURNER
OPERATION
6
7
MAIN BURNER OPERATION
Module monitors pilot flame
current.
PILOT FLAME FAILURE
Main valve closes.
S8660, S8670 starts trial for ignition.
THERMOSTAT SATISFIED
Valves close, pilot and main
burners are off.
END
M1171B
Fig. 12—S8660, S8670 normal operating sequence.
13
69-0463
Download from Www.Somanuals.com. All Manuals Search And Download.
TROUBLESHOOTING
IMPORTANT
1. The following service procedures are provided as
a general guide. Follow appliance manufacturer’s
service instructions if available.
WARNING
Whenperformingthefollowingsteps,donottouch
stripped end of jumper or SPARK terminal. The
ignition circuit generates over 10,000 volts and
electrical shock can result.
2. On lockout and retry models, meter readings
between gas control and ignition module must be
taken within the trial for ignition period. Once the
ignition module shuts off, lockout models must be
reset by setting the thermostat down for at least
one minute before continuing. On retry models,
wait for retry or reset at the thermostat.
❏ Energize the module and immediately touch one end of
the jumper firmly to the GND terminal on the module. Move
the free end of the jumper slowly toward the SPARK
terminal until a spark is established.
❏ Pull the jumper slowly away from the terminal and note
the length of the gap when sparking stops. Check table
below.
3. If any component does not function properly,
make sure it is correctly installed and wired before
replacing it.
4. The ignition module cannot be repaired. If it mal-
functions, it must be replaced.
ARC LENGTH
No arc or arc less
than 1/8 in. [3 mm]
ACTION
Checkexternalfuse,ifprovided.
Verify power at module input
terminal.
5. Only trained, experienced service technicians
should service intermittent pilot systems.
Replace module if fuse and
power ok.
Voltage output is okay.
Perform the checkout on page 11 as the first step in
troubleshooting. Then check the appropriate troubleshoot-
ing guide (Fig. 14 or 15) and the schematic diagram (Figs.
16-17) to pinpoint the cause of the problem. If troubleshoot-
ing indicates an ignition problem, see Ignition System
Checks below to isolate and correct the problem.
Following troubleshooting, perform the checkout proce-
dure (page 11) again to be sure system is operating
normally.
Arc 1/8 in. [3 mm]
or longer.
STEP 4: Check pilot and main burner lightoff.
❏ Set the thermostat to call for heat.
❏ Watchthepilotburnerduringtheignitionsequence. See
if:
•
•
Ignition spark continues after the pilot is lit.
The pilot lights and the spark stops, but main burner
does not light.
•
S8600B,H,M;S8610B,H;S8660D;S8670Donly:The
pilotlights,thesparkstopsandmainburnerlights,but
the system shuts down.
IGNITION SYSTEM CHECKS
STEP 1: Check ignition cable.
Make sure:
❏ If so, ensure adequate flame current as follows.
❏ Ignition cable does not run in contact with any metal
surfaces.
•
•
Turn off furnace at circuit breaker or fuse box.
Clean the flame rod with emery cloth.
❏ Ignition cable is no more than 36 in. [0.9 m] long.
❏ Connections to the ignition module and to the igniter or
igniter-sensor are clean and tight.
❏ Ignition cable provides good electrical continuity.
STEP 2: Check ignition system grounding. Nuisance shut-
downs are often caused by a poor or erratic ground.
❏ A common ground, usually supplied by the pilot burner
bracket, is required for the module and the pilot burner/
igniter-sensor.
•
Check for good metal-to-metal contact between the
pilot burner bracket and the main burner.
•
Check the ground lead from the GND(BURNER)
terminal on the module to the pilot burner. Make sure
connections are clean and tight. If the wire is dam-
agedordeteriorated,replaceitwithNo.14-18gauge,
moisture-resistant, thermoplastic insulated wire with
105° C [221° F] minimum rating.
— Check the ceramic flame rod insulator for cracks
or evidence of exposure to extreme heat, which
canpermitleakagetoground.Replacepilotburner/
igniter-sensor and provide shield if necessary.
— If flame rod or bracket are bent out of position,
restore to correct position.
STEP 3: Check spark ignition circuit. You will need a short
jumper wire made from ignition cable or other heavily
insulated wire.
❏ Close the manual gas valve.
❏ Disconnect the ignition cable at the SPARK terminal on
the module.
Fig. 13—Examples of unsatisfactory pilot flames.
14
Download from Www.Somanuals.com. All Manuals Search And Download.
•
•
Make sure electrical connections are clean and tight.
Replace damaged wire with moisture-resistant No.
18 wire rated for continuous duty up to 105° C [221°
F].
Checkforcrackedceramicinsulator,whichcancause
short to ground, and replace igniter-sensor if neces-
sary.
adjustment screw on the gas control
clockwise
counterclockwise
to
decrease
to increase pilot flame. Fol-
or
lowing adjustment, always replace pilot adjustment
cover screw and tighten firmly to assure proper gas
control operation.
Set thermostat below room temperature to end call
for heat.
•
•
•
At the gas control, disconnect main valve wire from
the TH or MV terminal.
❏ Recheck ignition sequence as follows.
Turnonpowerandsetthermostattocallforheat. The
pilot should light but the main burner will remain off
because the main valve actuator is disconnected.
Checkthepilotflame.Makesureitisblue,steadyand
envelops 3/8 to 1/2 in. [10 to 13 mm] of the flame rod.
See Fig. 13 for possible flame problems and their
causes.
•
•
•
•
Reconnect main valve wire.
Set thermostat to call for heat.
Watch ignition sequence at burner.
If spark still doesn’t stop after pilot lights, replace
ignition module.
If main burner doesn’t light or if main burner lights but
systemlocksout,checkmodule,groundwireandgas
control as described in appropriate troubleshooting
chart, Fig. 14 or 15.
•
•
•
If necessary, adjust pilot flame by turning the pilot
Before troubleshooting, familiarize yourself with the startup and checkout procedure.
NOTE: Models with TH-W terminal (7) must have call for heat 24 Vac supply connected to the TH-W terminal.
Models with no TH-W terminal must have call for heat 24 Vac supply connected to 24V terminal (6).
START
TURN GAS SUPPLY OFF.
TURN THERMOSTAT
(CONTROLLER) TO CALL
FOR HEAT
Check line voltage power, low voltage transformer, limit controller, thermostat (controller) and wiring. Also,
check air proving switch on combustion air blower system (if used) and that vent damper (if used) is open and
end switch is made.
NO
POWER TO MODULE?
(24V NOMINAL)
YES
On models with vent damper plug, make sure vent damper
has not been installed, then removed. Replace vent damper
if necessary.
NO
Pull ignition lead and
check spark at module.
NO
On other models, replace module.
SPARK ACROSS
Spark okay?
YES
IGNITER/SENSOR GAP?
(S8660, S8670, S8680
HAVE 45 SECOND [NOMINAL]
PREPURGE BEFORE SPARK
STARTS.)
Check ignition cable, ground wiring, ceramic insulator and gap, and correct.
Check boot of the ignition cable for signs of melting or buckling. Take protective action to shield cable and
boot from excessive temperatures.
YES
TURN GAS SUPPLY ON
AND RECYCLE CALL
FOR HEAT
Check that all manual gas valves are open, supply tubing and pressures are good, and pilot burner orifice
is not blocked.
Check electrical connections between module and pilot operator on gas control.
Check for 24 Vac across PV-MV/PV terminals on module. If voltage is okay, replace gas control; if not,
replace module.
NO
PILOT BURNER LIGHTS?
YES
NOTE: It may be necessary to recycle the call for heat to clear the pilot supply tubes of air.
NOTE: If S86XXB,H,D,J goes into lockout, reset system. For S86XXC,M,U,J,K, wait 6 min.
nom. for retry or reset system.
SPARK STOPS WHEN
PILOT IS LIT?
Check continuity of ignition cable and ground wire.
Clean flame rod.
NO
Check electrical connections between flame rod and module.
Check for cracked ceramic flame rod insulator.
Check that pilot flame covers flame rod and is steady and blue.
Adjust pilot flame.
YES
If problem persists, replace module.
Check for 24 Vac across MV-MV/PV terminals. If no voltage, replace module.
Check electrical connections between module and gas control. If okay, replace gas control or gas control
operator.
MAIN BURNER LIGHTS?
YES
NO
NO
NOTE: If S86XXB,H,D,J goes into lockout, reset system. For S86XXC,M,U,J,K, wait 6 min.
nom. for retry or reset system.
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS?
Check continuity of ignition cable and ground wire.
NOTE: If ground is poor or erratic, shutdowns may occur occasionally even though operation is normal at
the time of checkout.
YES
Check that pilot flame covers flame rod and is steady and blue.
If checks are okay, replace module.
CALL FOR HEAT ENDS
SYSTEM SHUTS OFF?
Check for proper thermostat (controller) operation.
Remove MV lead at module; if valve closes, recheck temperature controller and wiring; if not, replace gas
control.
NO
YES
TROUBLESHOOTING
ENDS
Repeat procedure until troublefree operation is obtained.
M1174F
Fig. 14—S8600, S8610 troubleshooting guide.
15
Download from Www.Somanuals.com. All Manuals Search And Download.
69-0463
NOTE: Before troubleshooting, familiarize yourself with the startup and checkout procedure.
START
TURN GAS SUPPLY OFF.
TURN THERMOSTAT TO
CALL FOR HEAT
Check line voltage power, low voltage transformer, limit controller, thermostat and wiring. Also, check air
proving switch on combustion air blower system and that vent damper (if used) is open and end switch is
made.
NO
POWER TO MODULE
(24V NOMINAL)
YES
45 SECOND
DELAY
Replace S8670.
NO
NO
YES
SPARK ACROSS
IGNITER/SENSOR GAP
Pull ignition lead and check
spark at S8670.
Replace module.
NO
YES
Spark okay?
YES
Check ignition cable, ground wiring, ceramic insulator and gap, and correct.
Check boot of the ignition cable for signs of melting or buckling. Take protective action to shield cable and
boot from excessive temperatures.
TURN GAS SUPPLY ON
PILOT BURNER LIGHTS?
Check that all manual gas cocks are open, supply tubing and pressures are good, and pilot burner orifice is
not blocked.
Check electrical connections between module and pilot operator on gas control.
Check for 24 Vac across PV-MV/PV terminals on module; If voltage is okay, replace gas control; if no
voltage, replace module.
NO
YES
NOTE: If module goes into lockout, reset system.
Check continuity of ignition cable and ground wire.
Clean flame rod.
Check electrical connections between flame rod and module.
Check for cracked ceramic flame rod insulator.
Check that pilot flame covers flame rod and is steady and blue.
Adjust pilot flame.
SPARK STOPS WHEN
PILOT IS LIT?
NO
YES
If checks are okay, replace module.
Check for 24 Vac (nominal) across MV-MV/PV terminals. if no voltage, replace module.
Check electrical connections between module and gas control. If okay, replace gas control.
MAIN BURNER LIGHTS?
YES
NO
NO
NOTE: If module goes into lockout, reset system.
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS?
Check continuity of ignition cable and ground wire.
NOTE: If ground is poor or erratic, shutdowns may occur occasionally even though operation is normal at the
time of checkout.
YES
If checks are okay, replace module.
CALL FOR HEAT ENDS
SYSTEM SHUTS OFF?
Check for proper thermostat (controller) operation.
Remove MV lead at module; if valve closes, recheck temperature controller and wiring; if not, replace gas
control.
NO
YES
TROUBLESHOOTING
ENDS
Repeat procedure until troublefree operation is obtained.
M1173C
Fig. 15—S8660, S8670 troubleshooting guide.
16
Download from Www.Somanuals.com. All Manuals Search And Download.
L1
(HOT)
L2
LIMIT ON-OFF
CONTROLLER SWITCH
1
THERMOSTAT OR
CONTROLLER
24V
TRANSFORMER
2
24V
(GND)
24V
ARC
GAP
2K1
SPARK
DRIVE
CIRCUIT
GND
(BUR-
NER)
FLAME
DETECTOR
CIRCUIT
SPARK
IGNITER
SENSOR
HYBRID CIRCUIT
1K
BURNER
GROUND
LOW
RELAY
DRIVERS
TIMING
CIRCUITS
2K
3K
VOLTAGE
POWER
SUPPLY
3
MAIN
VALVE
1K1
2K2
3K2
1K2
MV/
PV
MV
PV
PILOT
VALVE
3K1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
2
3
3K RELAY ON 100 PERCENT SHUTOFF MODELS ONLY. ON NON-SHUTOFF MODELS, PV AND MV
WIRED AS FOLLOWS.
TO 24V
TO 24V (GND)
INTERNAL WIRING
EXTERNAL WIRING
MAIN
VALVE
1K1
2K2
1K2
MV/
PV
MV
PV
PILOT
VALVE
M1165C
Fig. 16—Representative schematic for S8600F,H, M; S8610F,H. See Fig. 1 for hookup. S8660 and S8670 are similar
except the timing circuit includes a purge timer. See Fig. 6 for hookup.
17
69-0463
Download from Www.Somanuals.com. All Manuals Search And Download.
L1
(HOT)
L2
LIMIT ON-OFF
CONTROLLER SWITCH
1
THERMOSTAT OR
CONTROLLER
24V
TRANSFORMER
2
24V
(GND)
24V
ARC
GAP
2K1
SPARK
DRIVE
SENSOR
IGNITER
CIRCUIT
SENSE
SPARK
FLAME
DETECTOR
CIRCUIT
GND
(BUR-
NER)
HYBRID CIRCUIT
1K
LOW
BURNER
GROUND
RELAY
DRIVERS
TIMING
CIRCUITS
2K
3K
VOLTAGE
POWER
SUPPLY
3
MAIN
VALVE
1K1
2K2
3K2
1K2
3K1
MV/
PV
MV
PV
PILOT
VALVE
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
1
ALTERNATE LIMIT CONTROLLER LOCATION.
2
3
3K RELAY ON 100 PERCENT SHUTOFF MODELS ONLY. ON NON-SHUTOFF MODELS, PV AND
MV WIRED AS FOLLOWS.
TO 24V
TO 24V (GND)
INTERNAL WIRING
EXTERNAL WIRING
MAIN
VALVE
1K1
2K2
1K2
MV/
PV
MV
PV
PILOT
VALVE
M1166C
Fig. 17—Representative schematic for S8600A,B; S8610A,B. See Fig. 3 for hookup.
18
Download from Www.Somanuals.com. All Manuals Search And Download.
ANSI STANDARDS
EXHIBIT A
RECOMMENDED PROCEDURE FOR SAFETY INSPECTION OF AN EXISTING
APPLIANCE INSTALLATION AS A PRELIMINARY STEP TO APPLYING
AN AUTOMATIC INTERMITTENT PILOT SYSTEM
operate at maximum speed. Do not operate a summer
The following procedure is intended as a guide to aid
in determining that an appliance is properly installed and
is in a safe condition for continuing use.
exhaust fan. Close fireplace dampers. If, after complet-
ing steps 7 through 12, it is believed sufficient combus-
tion air is not available, refer to 1.3.4 of the National Fuel
Gas Code (Z223.1) for guidance.
This procedure is predicated on central furnace and
boiler installations equipped with an atmospheric gas
burner(s) and not of the direct vent type. It should be
recognized that generalized test procedures cannot
anticipate all situations. Accordingly, in some cases,
deviation from this procedure may be necessary to
determine safe operation of the equipment.
a. This procedure should be performed prior to any
attempt at modification of the appliance or the instal-
lation.
b. If it is determined there is a condition which could
result in unsafe operation, the appliance should be
shut off and the owner advised of the unsafe condi-
tion.
8. Place in operation the appliance being inspected.
Follow the lighting instructions. Adjust thermostat so
appliance will operate continuously.
9. a. Determinethatthepilotisburningproperlyand
that main burner ignition is satisfactory by inter-
rupting and re-establishing the electrical supply to
the appliance in any convenient manner.
b. Determine manifold pressure in order to match
input after the new control is installed.
The following steps should be followed in making the
safety inspection:
a.Visually determine that main burner gas is burn-
ing properly; i.e., no floating, lifting or flashback.
Adjust the primary air shutter(s) as required.
b.If appliance is equipped with high and low flame
controlorflamemodulation,checkforpropermain
burner operation at low flame.
1. Conduct a Gas Leakage Test of the appliance
piping and control system downstream of the shutoff
valve in the supply line to the appliance.
2. Visually inspect the venting system for proper size
and horizontal pitch and determine there is no blockage
or restrictions, leakage or corrosion or other deficiencies
which could cause an unsafe condition.
11. Test for spillage at the draft hood relief opening
after 5 minutes of main burner operation. Use a draft
gauge, the flame of a match or candle, or smoke from a
cigarette, cigar or pipe.
3. Shut off all gas to the appliance and shut off any
other fuel-burning appliance within the same room. Use
the shutoff valve in the shutoff valve in the supply line to
each appliance.
12. Return doors, windows, exhaust fans, fireplace
dampers and all other fuel-burning appliances to their
previous conditions of use.
13. Applicable only to warm air heating appliances.
Check both limit controller and fan controller for proper
operation. Limit controller operation can be checked by
temporarily disconnecting the electrical supply to the
blower motor and determining that the limit control acts
to shut off the main burner gas.
4. Inspect burners and crossovers for blockage and
corrosion.
5. Applicable only to warm air heating appliances.
Inspect heat exchangers for cracks, openings or exces-
sive corrosion.
14. Applicable only to boilers:
6. Applicable only to boilers. Inspect for evidence of
water or combustion product leaks.
a. Determinethatthecirculatingwaterpumpsare
in operating condition.
b. Test low water cutoffs, automatic feed con-
trols, pressure and temperature limit controls and
relief valves in accordance with the
manufacturer’s recommendations and instruc-
tions to determine they are in operating condition.
7. Insofar as is practical, close all building doors and
windows and all doors between the space in which the
appliance is located and other spaces of the building.
Turn on clothes dryers. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, so they will
EXHIBIT A OF ANSI STANDARD Z21.71 FOR AUTOMATIC INTERMITTENT PILOT IGNITION SYSTEMS FOR FIELD
INSTALLATION
19
69-0463
Download from Www.Somanuals.com. All Manuals Search And Download.
EXHIBIT B
PROCEDURE FOR INSTALLING AUTOMATIC INTERMITTENT PILOT SYSTEMS
Prior to beginning this procedure, a preliminary ex-
amination of the appliance and the automatic intermit-
tent pilot system should be made to determine that the
automatic intermittent pilot system can be properly
applied to the appliance.
This procedure is intended as a guide to aid in safely
installing a listed automatic intermittent pilot system on
an existing listed appliance equipped with an atmos-
pheric gas burner(s) and not of the direct vent type.
This procedure is based on the assumption that the
history of the specific installation has been one of safe
and satisfactory operation.
7. Make certain wiring connections are tight and
wires are positioned and secured so they will not be able
to contact high temperature locations.
8. Conduct a Gas Leakage Test of the appliance
piping and control system downstream of the shutoff
valve in the supply line to the appliance.
9. a. Adjust the thermostat to its highest tempera-
ture setting, and test manifold pressure and adjust
the pressure regulator to match original input as
required (refer to Exhibit A, step 9b).
This procedure is predicated on central furnace and
boiler installations, and it should be recognized that
generalized procedures cannot anticipate all situations.
Accordingly, in some cases, deviation from this proce-
dure may be necessary to determine safe operation of
the equipment.
b. Visually determine that main burner is burning
properly; i.e., no floating, lifting or flashback. Ad-
just the primary air shutter(s) as required.
10. If the appliance is equipped with high and low
flamecontrolorflamemodulation, checkforpropermain
burner operation at both high and low flame.
The following steps should be followed in making the
modifications:
11. Determine that the pilot is igniting and burning
properly and that main burner ignition is satisfactory by
interrupting and re-establishing the electrical supply to
the appliance in any convenient manner. Make this
determination with the appliance burner both cold and
hot. Perform this step as many times as is necessary to
satisfy yourself that the automatic intermittent pilot sys-
tem is operating properly.
1. Perform a safety inspection of the existing appli-
ance installation. See Exhibit A for a recommended
procedure for such a safety inspection.
2. Shut off all gas and electricity to the appliance. To
shutoffgas,usetheshutoffvalveinthesupplylinetothe
appliance. Do not use the shutoff valve which is pro-
vided as part of a combination control.
12. Test the pilot safety device (1) to determine if it is
operating properly, and (2) for turndown characteristics
according to the manufacturer’s installation instructions.
No adjustments should be made other than those rec-
ommended by the system manufacturer.
3. Install the automatic intermittent pilot system in
strict accordance with the manufacturer’s installation
instructions.
4. Turn on all gas and electricity to the appliance.
13. Sequence the appliance through at least three
operating cycles.
5. Determine that the appliance transformer has
adequate capacity by following the steps outlined be-
low:
14. Applicable only to furnaces. Check both the limit
controller and the fan controller for proper operation.
Limit control operation can be checked by blocking the
circulating air inlet or temporarily disconnecting the
electrical supply to the blower motor and determining
that the limit controller acts to shut off the main burner
gas.
a. Computetheapproximatecurrentdrawbyadding
the current draw of the automatic intermittent pilot
system to (1) the current draw of the associated
valving, and (2) the current draw of any relays or
other devices operated by the transformer.
b. Multiplythetotalcurrentdrawascomputedabove
by 24 V to determine the total VA (volt-ampere)
required.
15. Applicable only to boilers.
c. The total VA (volt-ampere) required should be
equal to or less than the VA rating of the transformer.
d. If the total VA (volt-ampere) required is greater
thantheVAratingofthetransformer, thetransformer
must be replaced with a Class 2 transformer of
adequate rating.
a. Determine that the circulating water pumps are
in operating condition.
b. Test low water cutoffs, automatic feed water
controls, pressure and temperature limit control-
lers and relief valves in accordance with the
manufacturer’s recommendation to determine
they are in operating condition.
6. Check the heat anticipator in the comfort thermo-
stat to determine if it is properly adjusted to the current
draw of the control system. Follow the thermostat
manufacturer’s instructions.
16. Add the labels (see 1.6.1-n and -o) on the appli-
ance.
EXHIBIT B OF ANSI STANDARD Z21.71 FOR AUTOMATIC INTERMITTENT PILOT IGNITION SYSTEMS FOR FIELD
INSTALLATION.
Home and Building Control
Honeywell International, Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Home and Building Control
Honeywell Limited—Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario M1V 4Z9
Download from Www.Somanuals.com. All Manuals Search And Download.
|