Honeywell Water Pump S8600 User Manual

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. Its 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.  
 
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 manufacturers 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 wont 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 2HONEYWELL 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 manufacturers 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 3RECOMMENDED 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  
 
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 4TERMINAL 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: Earthground 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. 1S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating system with an atmospheric burner.  
4
 
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. 2S8600F,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. 3S8600A,B; S8610A,B connections in a heating system with an atmospheric burner.  
5
69-0463  
 
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. 4S8600A,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. 5S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating system with power-assisted combustion.  
6
 
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. 6S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating system with a two-stage gas control and  
power-assisted combustion.  
7
69-0463  
 
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. 7S8600F,H,M; S8610F,H; S8660D; S8670D in a heating system with an atmospheric burner and a D80B vent  
damper.  
8
 
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. 8S8600F,H,M; S8610F,H; S8660D; S8670D connections in a heating-cooling system with power-assisted  
combustion.  
9
69-0463  
 
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. 9S8600F,H,M;S8610F, H;S8660D;S8670DconnectionsinahydronicheatingsytemwithaD80Dventdamper.  
10  
 
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. 10S8600F,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  
 
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. 11S8600, S8610 normal operating sequence.  
12  
 
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. 12S8660, S8670 normal operating sequence.  
13  
69-0463  
 
TROUBLESHOOTING  
IMPORTANT  
1. The following service procedures are provided as  
a general guide. Follow appliance manufacturers  
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. 13Examples of unsatisfactory pilot flames.  
14  
 
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 doesnt stop after pilot lights, replace  
ignition module.  
If main burner doesnt 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. 14S8600, S8610 troubleshooting guide.  
15  
 
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. 15S8660, S8670 troubleshooting guide.  
16  
 
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. 16Representative 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  
 
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. 17Representative schematic for S8600A,B; S8610A,B. See Fig. 3 for hookup.  
18  
 
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  
manufacturers 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  
 
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 manufacturers 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 manufacturers 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  
manufacturers 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  
manufacturers 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  
 

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