Honeywell S89C User manual

THE S89 AND S890 PROVIDE OPERATING CON
TROL AND SYSTEM SHUTDOWN ON LOSS OF MAIN
BURNER FLAME IN DIRECT IGNITION CENTRAL
HEAT FURNACES AND HEATING APPLIANCES
WITH HOT SURFACE IGNITER.
□ S89C,G, and S890C,G, are for systems with a
combination igniter-sensor.
□ S890D.H and S890D.H are for systems with separate
igniter and sensor.
□ S89C,D, and S890C,D, lock out after one try for
ignition.
□ S89G,H and S890G.H provide three tries for ignition
before lockout, with 30 sec. min. purge before second
and third tries.
□ S89 and S890 provide 2 or 4 sec. (depending on
model) max. ignition activation periods.
□ S890 provides 30 sec. min. prepurge on initial trial for
ignition.
□ Compatible with Norton 201 and 271 or equivalent hot
surface igniters.
□ S89D.H and S890D.H require a separate sensor
mounted on burner (Q354 recommended).
□ Available with leadwires for line voltage connections.
□ Available with Molex plug for connecting D80D Vent
Damper.
□ Modules can be used on either natural or LP gas; they
provide 100 percent shutoff of gas on lockout.
□ Modules have relay contacts for use with any direct
ignition gas control with max. 2.0 A, 24 Vac rating.
□ Modules use rectification principle for flame sensing.
□ Minus 40° F to +175° F [minus 40° С to +79° C]
temperature rating.
HOT SURFACE
IGNITION
MODULES
J.A.
Rev. 9-89 Form Number 68-0070—1
© Honeywell In . 1989
Honeywell
Для заказа перейдите по ссылке: honeywell-trade.ru
Или позвоните по телефонам: 8 800 333-22-13; [phone]

SPECIFICATIONS
- ----------------------------------------------- - --------- IMPORTANT ----------------------------- - ------------------------------------
THE SPECIFICATIONS GIVEN IN THIS PUBLICATION DO NOT INCLUDE NORMAL MANUFACTURING TOL
ERANCES. THEREFORE, THIS UNIT MAY NOT MATCH THE LISTED SPECIFICATIONS EXACTLY. ALSO,
THIS PRODUCT IS TESTED AND CALIBRATED UNDER CLOSELY CONTROLLED CONDITIONS, AND SOME
MINOR DIFFERENCES IN PERFORMANCE CAN BE EXPECTED IF THOSE CONDITIONS ARE CHANGED.
MODELS: See Table 1.
TABLE 1—HOT SURFACE IGNITION MODULES
MODEL
NO.
IGNITION
TRIALS
IGNITER/
SENSOR
TYPE LOCKOUT
TIMING
IGNITION
ACTIVATION
PERIOD® PREPURGE
TIMING
S89C 1Combination 4, 6,11 or 15 sec.
nom., as ordered Not
special
IAP model.
None
S89D 1Separate
S89G 3Combination
S89H 3Separate
S89 1Combination 4 sec. nom. 2 sec. max.
6 sec. nom. 4 sec. max.
S890C 1Combination 4, 6,11 or 15 sec.
nom., as ordered Not
special
IAP model.
30 sec. min.
S890D 1Separate
S890G 3Combination
S890H 3Separate
S890 1Combination 4 sec. nom. 2 sec. max.
6 sec. nom. 4 sec. max.
a Ignition activation period (IAP) is the time both the igniter and the gas control are powered following warmup. The gas
control remains open 0.75 sec. min. after igniter turns off to allow flame sensing.
(continued on page 3)
ORDERING INFORMATION
WHEN PURCHASING REPLACEMENT AND MODERNIZATION PRODUCTS FROM YOUR TRADELINE
WHOLESALER OR YOUR DISTRIBUTOR, REFER TO THE TRADELINE CATALOG OR PRICE SHEETS FOR
COMPLETE ORDERING NUMBER, OR SPECIFY—
1. Order number. 4. Molex plug for vent damper onne tion, If required.
2. Lo kout timing. 5. Other omponents as required.
3. Leadwires, if desired.
IF YOU HAVE ADDITIONAL QUESTIONS, NEED FURTHER INFORMATION OR WOULD LIKE TO COMMENT
ON OUR PRODUCTS OR SERVICES, PLEASE WRITE OR PHONE:
1. YOUR LOCAL HONEYWELL RESIDENTIAL SALES OFFICE (CHECK WHITE PAGES OF YOUR PHONE
DIRECTORY).
2. RESIDENTIAL DIVISION CUSTOMER SERVICE
HONEYWELL INC., 1885 DOUGLAS DRIVE NORTH
MINNEAPOLIS, MINNESOTA 55422-4386 [phone]
IN CANADA—HONEYWELL LIMITED/HONEYWELL LIMITEE, 740 ELLESMERE ROAD, SCARBOROUGH,
ONTARIO M1P 2V9. INTERNATIONAL SALES AND SERVICE OFFICES IN ALL PRINCIPAL CITIES OF THE
WORLD. __________________
2

ELECTRICAL RATINGS:
Voltage and frequency: 20.5 to 28.5 V (24 V nom.), 60
Hz.
Current rating: 0.2 A.
Gas control contact ratings (at 24 Vac): 2.0 A running,
20.0 A inrush.
IGNITER WARM-UP PERIOD: 34 sec., nom.
THERMOSTAT ANTICIPATOR SETTING: 0.2 A plus gas
control current rating.
AMBIENT TEMPERATURE RATING: Minus 40° F to
+175° F [minus 40° С to +79° С].
RELATIVE HUMIDITY RATING: 5 to 90 percent at 95° F.
FLAME FAILURE RESPONSE TIME: 2 sec. max. with a
2.5 pA flame signal.
FLAME CURRENT: 0.8 pA DC, min.
TERMINALS: 1/4 in. male quick connects for line voltage
and sensor connections; 3/16 in. male quick connects
for all low voltage connections. Terminal options (spec
ify when ordering):
* Molex plug for connection to D80D Vent Damper.
• 10 in. [250 mm] min. color-coded leadwires for all
line voltage connections.
MOUNTING: Mounts in any position. Fasten with No. 6-32
machine or No. 8 sheetmetal screws, 1 in. long.
DIMENSIONS: See Fig. 1.
UNDERWRITERS LABORATORIES INC. COMPONENT
RECOGNIZED: FILE NO. MP268, Guide No. MCCZ2.
CANADIAN GAS ASSOCIATION CERTIFIED: 1029-ABI-
6218.
AMERICAN GAS ASSOCIATION CERTIFIED: 20-20B1.
OTHER SYSTEM CONTROLS
The S89 and S890 provide operating control of a direct
ignition system using a hot surface igniter. Additional
components required to complete the system must be
ordered separately. They include:
DUAL VALVE COMBINATION GAS CONTROL: Any di
rect ignition gas control with 2.0 A max. main valve
rating. VR8205, VR845, VR854, VR8450 or VR8540
recommended.
HOT SURFACE IGNITER OR IGNITER-SENSOR: Nor
ton Model 201 or 271 or equivalent.
NOTE: If igniter other than Norton Model 201 or 271 is
used, the igniter must meet the following minimum
specifications, required over the life of the igniter:
• Igniter must reach 1000° С [1832° F] within 34
seconds with 102 Vac applied.
• Igniter must maintain at least 500M ohms insulation
resistance between the igniter leadwires and the
igniter mounting bracket.
• Igniter must not develop an insulating layer on its
surface (over time) which would prevent flame
sensing.
• Igniter surface area immersed in flame must not
exceed 1 /4 of the grounded area im mersed in f lam e.
This would prevent flame sensing.
• Igniter current draw at 132 Vac must not exceed 5 A.
SENSOR: Separate sensor required for all S89D,H and
S890D.H. Honeywell Q354 recommended.
IGNITER WIRING: Provide wiring harness to suit applica
tion.
• Leadwires: No. 18 AWG, stranded copper with
105° С rated 1/16 in. PVC insulation.
• Terminals: Insulated 1/4 in. female quick connects
or solderless connectors to module (depending on
module) and suitable connector to igniter.
TRANSFORMER: Add current ratings of module, gas
control, vent damper and any other components of the
control system to determine transformer size require
ment.
THERMOSTAT: Compatible with any Honeywell 24 V
thermostat and with competitive 24 V thermostats that
are powered independently of the module.
HIGH LIMIT AND OTHER AUXILIARY CONTROLS: As
specified by the heating appliance manufacturer.
IN. O.C. (6)-
A MOLEX PLUG AND TH-W TERMINAL
ON VENT DAMPER MODELS ONLY.
A SENSE TERMINAL ON D AND H
MODELS ONLY.
A LEADWIRE MODELS HAVE 4
LEADWIRES IN PLACE OF LINE
VOLTAGE TERMINALS.
-110)
pr
— Q.C.
aT" 4
A
A-*.
|* ----- 2уРЗ]—*|
P2] Г
- — IN. Q.C. (5)
4
8
[86]
\HOLE [4]
M2189
FIG. 1—APPROXIMATE S89/S890 DIMENSIONS IN In. [mm IN BRACKETS],
368-0070—1

PLANNING THE INSTALLATION
Hot surface ignition systems are used on a wide variety
of central heating equipment and on heating appliances
such as agricultural equipment, industrial heating equip
ment and pool heaters. Some of these applications may
make heavy demands on the controls, either because of
frequent cycling, or because of moisture, corrosive chemi
cals, dust or excessive heat in the environment. In these
situations, special steps may be required to prevent nui
sance shutdowns and premature control failure. These
applications require Honeywell Residential Division Engi
neering review; contact your Honeywell Sales Represen
tative for assistance.
FREQUENT CYCLING
These controls are designed for use on space heating
appliances that typically cycle 3 to 4 times an hour during
the heating season and not at all during the cooling
season. In an application with significantly greater cycling
rates and closer to year-round use, we recommend
monthly checkout because the controls may wear out
more quickly.
WATER OR STEAM CLEANING
Once a module or gas control has been wet, it may
operate unreliably and must be replaced. If the appliance
is likely to be cleaned with water or steam, the controls and
associated wiring should be covered so water or steam
flow cannot reach them. The controls should be high
enough above the bottom of the cabinet so they will not be
subject to flooding or splashing during normal cleaning
procedures. If necessary, shield the controls to protect
them from splashing water. A NEMA 4 enclosure is recom
mended forthe 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
WHEN INSTALLING THIS IGNITION SYSTEM...
1. Read these instructions carefully. Failure to follow
them could damage the components or cause a hazardous
condition.
2. Check the ratings given in the instructions and on the
components to make sure they are suitable for your
application.
3. Installer must be a trained, experienced service tech
nician.
4. After installation is complete, check out component
operation as provided in these instructions.
board, causing the module to fail. Never install an appli
ance 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 maybe installed in a humid atmos
phere, make sure air circulation around the module and
gas control is adequate to prevent condensation. It's also
important to regularly check out the system. A NEMA 4
enclosure may be needed forthe ignition module; see the
Electronic Ignition Service Manual, form 70-6604.
CORROSIVE CHEMICALS
Corrosive chemicals can also attack the module and
gas control and eventually cause a failure. Where chemi
cals may be used routinely for cleaning, make sure the
cleaning solution cannot reach the controls. Where chemi
cals are likely to be suspended in air, as in some industrial
and agricultural applications, protect the ignition module
from exposure with a NEMA 4 enclosure; see the Elec
tronic Ignition Service Manual, form 70-6604.
DUST OR GREASE ACCUMULATION
Heavy accumulation of dust or grease may cause the
controls to malfunction. Where dust or grease may be a
problem, provide covers forthe module and the gas control
that will limit environmental contamination. A NEMA 4
enclosure is recommended forthe ignition module; seethe
Electronic Ignition Service Manual, form 70-6604.
HEAT
The controls can be damaged by excessively high tem
peratures. Make sure the maximum ambient temperature
at the control locations will not exceed the rating of the
control. If the appliance normally operates at very high
temperatures, insulation, shielding, and air circulation may
be necessary to protect the controls. Proper insulation or
shielding should be provided by the appliance manufac
turer; make sure adequate air circulation is maintained
when the appliance is installed.
INSTALLATION AND CHECKOUT
WARNING
FIRE OR EXPLOSION HAZARD.
CAN CAUSE SERIOUS INJURY OR DEATH.
1. The ignition module an malfun tion if it gets
wet, leading to a umulation of explosive
gas:
• Never install where water an flood, drip
or ondense on module.
• Never try to use a module that has been
wet—repla e it.
2. Liquefied petroleum (LP) gas is heavier than
air and will not vent upward naturally.
• Do not operate ele tri swit hes, lights,
or applian es until you are sure the ap
plian e area is free of gas.
4

CAUTION
1. Disconnect power supply before beginning wiring
to prevent electrical shock or equipment damage.
2. If a new gas control is to be installed, turn off gas
supply before starting installation. Conduct Gas
Leak Test according to gas control manufac
turer’s instructions after the gas control is in
stalled.
3. If module must be mounted near moisture or
water, provide suitable waterproof enclosure.
PERFORM PREINSTALLATION SAFETY INSPECTION
If this is a replacement installation, check the appliance
and venting system carefully before installing new module.
If a condition which could result in unsafe operation is
detected, the appliance should be shut off and the owner
advised of the unsafe condition. Any potentially unsafe
condition must be corrected before proceeding with the
installation.
MAINTENANCE REQUIREMENTS IN SEVERE ENVI
RONMENTS
Regular preventive maintenance is important in any ap
plication, but especially so in agricultural and industrial
applications because
• In many such applications, the equipment operates
100,000-200,000 cycles per year. Such heavy cy
cling can wear out the gas control in one to two years.
A normal forced air furnace, for which the controls
were originally intended, typically operates less than
20,000 cycles per year.
• Exposure to water, dirt, chemicals, and heat can
damage the module or the gas control and shut
down the control system. A NEMA 4 enclosure can
reduce exposure to environmental contaminants.
See Electronic Ignition Sen/ice Manual, form 70
6604.
The maintenance program should include regular
checkout of the system as outlined under Checkout, page
11. WARNING
FIRE OR EXPLOSION HAZARD
MAY CAUSE PROPERTY DAMAGE, SEVERE
INJURY OR DEATH
Do not attempt to take the module apart or to
lean it. Improper reassembly and leaning may
ause unreliable operation.
Maintenance frequency must be determined individu
ally for each application. Some considerations are:
• Cycling frequency. Appliances that may cycle more
than 20,000 times annually should be checked
monthly.
• Intermittent u e. Appliances that are used season
ally should be checked before shutdown and again
before the next use.
• Con equence of unexpected hutdown. Where the
cost of an unexpected shutdown would be high, the
system should be checked more often.
• Du ty, wet, or corro ive environment. Since these
environments can cause the controls to deteriorate
more rapidly, the system should be checked more
often. Protective enclosures, as outlined under
"Planning the Installation”, are recommended re
gardless of checkout frequency.
Any control should be replaced if it does not perform
properly on checkout or troubleshooting. In addition, re
place any module if it is wet or looks like it has ever been
wet.
MOUNT IGNITION MODULE
Select a location close enough to the burner to allow a
short, direct cable route to the igniter. Ambient tempera
ture at the module must be within the range of minus 40°
F to plus 175° F [minus 40° С to plus 79° С]. The module
must be protected from water, moisture, corrosive chemi
cals and excessive dust and grease.
The module can be mounted in any position. Fasten
securely with four No. 6-32 machine or No. 8 sheetmetal
screws 1 in. [25 mm] long.
MOUNT THE SYSTEM CONTROLS
Mount any required controls, such as the gas control,
hot surface igniter, flame sensor, thermostat, limit and
transformer according to manufacturer’s instructions.
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.
2. Disconnect the power supply before making wir
ing connections to prevent electrical shock or
equipment damage.
------------------------ IMPORTANT ------------------------
1. All wiring must comply with applicable electrical
codes and ordinances.
2. When installing the hot surface igniter, the lead-
wires should be kept as short as possible and
should not be allowed to rest against grounded
metal surfaces.
3. A common ground is required for the S89/S890
and the main burner. The 24 V (GND) terminal
internally grounds one side of the transformer.
Any auxiliary controls or limits must not be in the
grounded leg. In addition, the appliance should
be earth-grounded.
4. Make surethetransformer 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 gas control, and
multiply by 24 to determine the total VA require
ment of these components. Add this total to 4.8
VA (forthe ignition module). The result is the mini
mum transformer VA rating. Use a Class II trans
former if replacement is required.
5. Check that L1 (hot) and L2 (neutral) are wired to
the proper terminals. If L1 and L2 are inter
changed, the S89/S890 will not detect the flame,
and will go into safety shutdown.
Conne t Igniter
Prepare wiring harness. See Igniter wiring, page 3.
1. On models with quick connects, use insulated 1 /4 in.
female quick connects to connect the wiring harness leads
to the HSI terminals on the ignition module.
2. On models with leadwires, use solderless connectors
to connect the wiring harness leads to the blue leads from
the module.
3. Connect the wiring harness to the igniter.
568-0070—1

Conne t Vent Damper
The D80B Vent Damper can be used with all ignition
modules, although the Molex plug provided on some
modules simplifies wiring connections when used with the
D80D Plug-In Vent Damper. Once a module with vent
damper plug ha powered a vent damper circuit, it cannot
be u ed in a ga y tem without a vent damper. A non-
replaceable fuse in the module blows on initial power-up.
Once this fuse has blown the module won’t work unless the
vent damper is connected.
To connect the plug-in model to D80D:
1. Remove the plug from the terminal strip on the
ignition module case and discard.
2. Using the wiring harness supplied, insert the match
ing 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. 5 for typical connec
tions.
Conne t Ignition Module
1. Connect remaining system components to the igni
tion module terminals as shown in the appropriate wiring
diagram, Figs. 2 to 10.
• Figs. 2 and 3 are basic circuits for a heating only
atmospheric burner system. Fig. 2 shows the C,G
and models with combination igniter-sensor; Fig. 3
shows the D, H models with separate igniter and sen
sor.
• Figs. 4 and 5 show the C,G and models with a
D80 Vent Damper. Never use a vent damper in an
LP gas system or in a fan-assisted combustion
system.
• Figs. 6-10 show S89C,G, /S890C,G, with
combination igniter-sensor in a variety of systems,
with alternate connections for vent damper plug
models. Remember, however, that a vent damper
should not be used in a fan-assisted combustion
system or an LP gas system and that the vent
damper plug must not be removed except to connect
a D80D with the plug-in cable. S89D,H/S890D,H
with separate igniter and sensor can be substituted
in these hookups by simply connecting the sensor as
shown in Fig. 3.
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.
Conne t Gas Control
Use No. 18 gauge solid or stranded wire. Use 3/16 in.
femalequick connects for module connections. Connect to
gas control terminals as shown in wiring diagrams, using
terminals appropriate to the gas control.
Ground Control System
The igniter, flame sensor and ignition module must
share acommon ground with the main burner. Use thermo
plastic insulated wire with a minimum rating of 105° С
[221 ° F] for the ground wire; asbestos insulation is not ac
ceptable. 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 3/16 in.
quick-connect terminal and connect it to the male quick-
connectGND(BURNER) terminal on the ignition module.
2. Strip the other end of the wire and fasten it under the
igniter bracket mounting screw. If necessary, use a shield
to protect the ground wire from radiant heat.
3. The burner serves as the common grounding area. If
there is not good metal-to-metal contact between the
burner and ground, run a lead from the burner to ground.
DUAL VALVE
COMBINATION
GAS CONTROL S89C.G. /S890C.G. HOT
SURFACE IGNITION CONTROL
MV
m
Д "
оVALVE ,- о
VALVEGND) H£j
TH-W 1 HSI
.24VGND) _ ^ =1 Z3
□GND (BURNER)
VENT .
DAMPER PLUgA
оAо
■ BURNER
GROUND
THERMOSTAT
OR CONTROLLER
г- 1
Ж
Д POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
MAKE SURE L1 AND L2 ARE NOT REVERSED;
THIS WOULD PREVENT FUME DETECTION.
A ALTERNATE LIMIT CONTROLLER LOCATION.
M2190
A CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO
TRANSFORMER.
A FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG,
UMPER TH-W AND 24V TERMINALS. DO NOT REMOVE VENT
DAMPER PLUG.
A FACTORY TEST TERM INAL. DO NOT USE.
A LEADWIRE MODEL IS COLOR-CODED AS SHOWN.
FIG. 2—S89C, G, J AND S890C, G, J IN AN ATMOSPHERIC BURNER HEATING SYSTEM.
6

DUAL VALVE
COMBINATION
GAS CONTROL S89D,H/S890D,H HOT SURFACE
IGNITION CONTROL 1
ОVALVE . . О
VALVE (GND) H^ j
24V ' L1
TH-W 1 HSI
24V G_ND)_; SEN
( =
□GND (BURNER)
VENT д
DAMPER PLUG OS.
оAОA
A
WHITE
BLUE
~ШГ
BLUE
A
0
HOT
SURFACE
IGNITER
Q354
FLAME SENSOR
LIMIT
CONTROLLER
" p H ^ - L 1
M\
(HOT)
12 A
THERMOSTAT
OR CONTROLLER
A POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
MAKE SURE L1 AND L2 ARE NOT REVERSED;
THIS WOULD PREVENT FLAME DETECTION.
A ALTERNATE LIMIT CONTROLLER LOCATION.
A CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
A
A
A
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG,
UMPER TH-W AND 24V TERMINALS. DO NOT REMOVE VENT DAMPER PLUG.
FACTORY TEST TERMINAL. DO NOT USE.
LEADWIRE MODEL IS COLOR-CODED AS SHOWN.
M2200
FIG. 3—S89D.H AND S890D.H IN AN ATMOSPHERIC BURNER HEATING SYSTEM.
DUAL VALVE
COMBINATION
GAS CONTROL SB9C.G, /S890C,G, HOT SURFACE
IGNITION CONTROL
MV
MV
D80DVENT
DAMPER
QWIRING
HARNESS
ОVALVE О
VALVE GND)
24V '
1 --
24V GND) _ ^ = i
пVENT A
UDAMPER PLUG
оAо
A
BLUE
BLACK.,.
THERMOSTAT
OR CONTROLLER
A POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND PROTECTION AS REQUIRED.
A ALTERNATE LIMIT CONTROLLER LOCATION.
A CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
HOT
SURFACE
IGNITER
SENSOR
LIMIT
CONTROLLER
A
A 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.
A FACTORY TEST TERMINAL. DO NOT USE.
A LEADWIRE MODEL IS COLOR-CODED AS SHOWN. M2191
FIG. A—S89C, G, J AND S890C.G, J IN AN ATMOSPHERIC BURNER HEATING SYSTEM WITH THE D80D VENT
DAMPER.
7 68-0070—1

D80B
THERMOSTAT
OR
CONTROLLER
DUAL VALVE
COMBINATION
GAS CONTROL
MV
Й Г 1
SB9C.G. /S890C.G. HOT
SURFACE IGNITION CONTROL
7 .. .
□
VALVE ,
VALVE (GND) H,
24V_ ' ' L
TH-W 1 H5
24V GND) _
GND (BURNER)
VENT д
DAMPER PLUG
A
BURNER
“ GROUND LIMIT
CONTROLLER
A
WHITE
BLUE
BLACK
w
aHOT
SURFACE
IGNITER
SENSOR
A
LIMIT
CONTROLLER
Ч5ЕЗ-(нот> A
TRANSFORMER
A POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
A ALTERNATE LIMIT CONTROLLER LOCATION.
A CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
A
A
A
A
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG.
UMPER TH-W AND 24V TERMINALS. DO NOT REMOVE VENT DAMPER PLUG.
FACTORY TEST TERMINAL. DO NOT USE.
LEADWIRE MODEL IS COLOR-CODED AS SHOWN.
CONNECT COLORS OF WIRE AS SHOWN. M2192
FIG. 5—S89C, G, J AND S890C, G, J IN AN ATMOSPHERIC BURNER HEATING SYSTEM WITH D80B VENT DAMPER.
A
COMBUSTION
AIR BLOWER
MOTOR
DUAL VALVE
COMBINATION
GAS CONTROL S89C,G. /S890C,G, HOT SURFACE IGNITION CONTROL
7" '
VALVE
VALVE GND)
24 V ~ !
TH-W '
24V GND) '
L2
HSI
L1
HSI
GND (BURNER)
VENT д
DAMPER PLUG/ЗЛ
A
BURNER
“ GROUND
aHOT
SURFACE
IGNITER
SENSOR
LIMIT
CONTROLLER
A
THERMOSTAT
OR CONTROLLER
COMBUSTION
AIR BLOWER
RELAY
A POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
MAKE SURE L1 AND L2 ARE NOT REVERSED;
THIS WOULD PREVENT FLAME DETECTION.
A ALTERNATE LIMIT CONTROLLER LOCATION.
A POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
ACONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND
LEG TO TRANSFORMER.
Д FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG.
UMPER TH-W AND 24V TERMINALS. DO NOT REMOVE VENT DAMPER PLUG.
A
AFACTORY TEST TERMINAL. DO NOT USE.
LEADWIRE MODEL IS COLOR-CODED AS SHOWN. M2193
FIG. 6—S89C,G,J AND S890C,G,J IN A FAN-ASSISTED COMBUSTION HEATING SYSTEM.
8

DUAL VALVE
COMBINATION
GAS CONTROL
S89C,G. /S890C,G, HOT
SURFACE IGNITION CONTROL
THERMOSTAT
A . -L1
(HOT)
-L2
COMBUSTION
AIR BLOWER
MOTOR
X
A "
4
ОVALVE . „
VALVE GND) H£j
24V L1
TH-W 1 HSI
24V GND) _ ^
о
=D
= 1
0GND (BURNER)
VENT д
DAMPER PLUG
оAО
COMBUSTION
AIR BLOWER
RELAY
. BURNER
GROUND A
0HOT
SURFACE
IGNITER
SENSOR
LIMIT
CONTROLLER
-EEl(НОТ)
-L2
A POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
A ALTERNATE LIMIT CONTROLLER LOCATION.
A CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
A
A
A
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER
PLUG, UMPER TH-W AND 24V TERMINALS. DO NOT
REMOVE VENT DAMPER PLUG.
FACTORY TEST TERMINAL. DO NOT USE.
LEADWIRE MODEL IS COLOR-CODED AS SHOWN. M2194
FIG. 7—S89C,G,J AND S890C,G,J IN A TWO STAGE FAN-ASSISTED COMBUSTION HEATING SYSTEM.
.tA.t THERMOSTAT
A POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
A OPTIONAL LIMIT CONTROLLER LOCATION.
A CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GORUND LEG TO TRANSFORMER.
A
A
A
FOR MODULE WITH TH-W TERMINAL AND VENT
DAMPER PLUG, UMPER TH-W AND 24V TERMINALS.
DO NOT REMOVE VENT DAMPER PLUG.
FACTORY TEST TERMINAL. DO NOT USE.
LEADWIRE MODEL IS COLOR-CODED AS SHOWN. M219S
FIG. 8—S89C,G,H AND S890C,G,H IN A FAN-ASSISTED COMBUSTION HEATING-CENTRAL COOLING SYSTEM.
9 68-0070—1

D80D
DUAL VALVE
COMBINATION
GAS CONTROL
S89C /S890C. HOT
SURFACE IGNITION CONTROL
4
ОVALVE
VALVE GND)
24V ~ ”
TH-W '
.24V GND) _ ^
L2 О
[= HSI
0GND (BURNER)
VENT
DAMPER PLUG A
оAО
A
WHITE
m ir
BURNER
” GROUND
aHOT
SURFACE
IGNITER
SENSOR
POWER SUPPLY. PROVIOE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
MAKE SURE L1 AND L2 ARE NOT REVERSED;
THIS WOULD PREVENT FLAME DETECTION.
A CONNECT COLORS OF WIRE AS SHOWN.
A FOR MODULE WITH TH-W TERMINAL AND VENT
DAMPER PLUG, UMPER TH-W AND 24V TERMINAL.
DO NOT REMOVE VENT DAMPER PLUG.
A FACTORY TEST TERM INAL. DO NOT USE.
A LEADWIRE MODEL IS COLOR-CODED AS SHOWN.
Д LEAVE TP-Z AND Z-W UMPERS IN PLACE. M2196
FIG. 9—S89C,J AND S890C,J IN A HYDRONIC HEATING SYSTEM WITH ATMOSPHERIC BURNER.
10

DUAL VALVE
COMBINATION
GAS CONTROL S89C,G, /S890C.G, HOT
SURFACE IGNITION CONTROL
ECO N
A POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
MAKE SURE L1 AND L2 ARE NOT REVERSED;
THIS WOULD PREVENT FLAME DETECTION.
A ECO SWITCH SHUTS DOWN SYSTEM IF TANK
TEMPERATURE EXCEEDS 210" F [99 C[
A CONTROLS IN 24V CIRCUIT MUST NOT BE IN
GROUND LEG TO TRANSFORMER.
(HOT)
L2 A
CONTROLLER
A
A
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG,
UMPER TH-W AND 24V TERMINALS. DO NOT REMOVE VENT
DAMPER PLUG.
FACTORY TEST TERMINAL. DO NOT USE.
LEADWIRE MODEL IS COLOR-CODED AS SHOWN.
M2197
FIG. 10—S89C,G,J AND S890C,G,J IN A COMMERCIAL WATER HEATING SYSTEM.
CHECKOUT
Check out the control system:
• 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 4, for
more information.
• As the first step in troubleshooting.
• Any time work is done on the system.
STEP 1: Perform Visual Inspe tion.
□ 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.
□ Do gas leak test upstream of gas control if piping has
been disturbed.
GAS LEAK TEST: Paint pipe joints with rich soap and
water solution. Bubbles indicate gas leak. Tighten joints
to stop leak.
STEP 2: Review Normal Operating Sequen e (Fig. 12)
and Module Spe ifi ations.
□ See OPERATION, page 12, and SPECIFICATIONS,
page 2.
STEP 3: Reset the Module.
□ Turn the thermostat to its lowest setting.
□ Wait one minute.
A you do Step 4 and 5, watch for point where
operation deviate from normal. Refer to Trouble hooting
Chart (Fig. 13) to correct problem.
STEP 4: Che k Safety Lo kout Operation.
□ Turn gas supply off.
□ Set thermostat or controller above room temperature to
call for heat.
□ Watch for igniter warmup either immediately or follow
ing prepurge. See SPECIFICATIONS, page 2.
□ Time the length of time gas control stays open. The time
should not exceed the following:
4 sec. model—5.5 sec.
6 sec. model—7.5 sec.
11 sec. model—15.0 sec.
15 sec. model—22.0 sec.
□ Three try for ignition module only (S89G,H;S890G,H):
Watch for start of 30 sec. min. purge, followed by 34 sec.
nom. igniter warmup and second try for ignition. After a
third purge, warmup and trial for ignition sequence, these
modules lock out.
□ Open manual gas control knob and make sure no gas
is flowing to burner.
WARNING
FIRE OR EXPLOSION HAZARD.
CAN CAUSE PROPERTY DAMAGE, SEVERE
INJURY OR DEATH.
1. If you smell gas or suspe t a gas leak, turn off
gas at manual servi e valve and eva uate the
house. Do not try to light any applian e, do
not tou h any ele tri al swit h or telephone
in the building until you are sure no spilled
gas remains.
2. Gas leak test must be done as des ribed in
Steps 1 and 5 below on initial installation and
any time work is done involving the gas pip
ing.
11 68-0070—1

□ Set thermostat below room temperature and wait one
minute before continuing.
STEP 5: Che k Normal Operation.
□ Set thermostat or controller above room temperature to
call for heat.
□ Make sure burner lights smoothly without flashback.
□ Make sure burner operates smoothly without floating,
lifting, or flame rollout to the furnace vestibule or heat
buildup in the vestibule.
□ If gas line has been disturbed, complete gas leak test.
GAS LEAK TEST: Paint gas control gasket edges and all
pipe connections downstream of gas control with rich
soap and water solution. Bubbles indicate gas leaks.
Tighten joints and screws or replace component to stop
gas leak.
□ Turn thermostat or controller below room temperature.
Make sure flame goes out.
STEP 6: Che k Burner Flame Condition.
The igniter-sensor or sensor must be constantly im
mersed in flame. Check burner flame condition as shown
in Fig. 11. If necessary, improve the flame condition or
relocate the sensor to a place on the main burner where
condition is better. Do not relocate igniteror igniter-sensor.
WAVING
FLAME
CHECK FOR
•POOR DRAFT
• EXCESS DRAFT
•HIGH VELOCITY OR
SECONDARY AIR
INSTALL SHIELD IF NECESSARY
SMALL
BLUE FLAME CHECK FOR:
• •CLOGGED PORTS OR ORIFICE
FILTER
•WRONG SIZE ORIFICE
LAZY
YELLOW
FLAME CHECK FOR:
LACK OF AIR FROM
• DIRTY PRIMARY AIR
OPENING
• LARGE PORTS OR
ORIFICES
GOOD
RECTIFYING
FLAME
3/4 TO 1 IN. p 9 TO 25 mm]
1/4 TO 1/2 IN. ]6 TO 13 mm]
FIG. 11—CHECK BURNER FLAME CONDITION.
OPERATION
The S89 and S890 are direct ignition controls used with
a hot surface igniter. They provide operating control and
100 percent shutdown on ignition failure or loss of main
burner flame in central heat furnaces and heating appli
ances.
Module operation is in four phases—prepurge (S890
only), igniter warmup, trial for ignition and burner opera
tion. Modules offer either one or three trials for ignition. Fig.
12 shows the normal operating sequence.
PREPURGE
When the S890 is used in a fan-assisted combustion
system, the combustion air blower starts on a call for heat
from the thermostat. On proof of airflow, the air proving
switch closes and energizes the S890. When the S890 is
used in an atmospheric system, the call for heat energizes
the module. _
In either case, the S890 first initiates a 30 sec. minimum
delay to allow system prepurge. After prepurge, the S890
energizes the igniter to start the igniter warmup.
IGNITER WARMUP
Following prepurge timing (S890) or call for heat from
the thermostat (S89), the module energizes the hot sur
face igniter for a 34 sec. nominal warmup period, during
which the gas control is closed.
TRIAL FOR IGNITION
Following the warmup period, the gas control opens for
a timed trial for ignition, allowing gas flow to the main
burner. Near the end of the trial for ignition period the igniter
shuts off to allow the rectification sensor to sense presence
of flame. On modules with specified Ignition Activation
Period (IAP) timing the igniter is on for 2 or 4 sec. maxi
mum, depending on model. On other modules, the igniter
shuts off about 1 sec. prior to lockout. On all modules, the
flame sense time, which is the time that the gas control is
still open between igniter shutoff and lockout is at least
0.75 sec. If lightoff is successful, the burner operation
phase begins.
BURNER OPERATION
When flame is detected, a flame rectification circuit is
completed between the sensor and burner ground. The
flame sensing circuit in the module detects the flame
current and holds the safety lockout timer in the reset
(normal) operation condition.
When the call for heat ends, the module and gas control
are de-energized. The gas control closes, stopping gas
flow to the burner.
SAFETY SHUTDOWN
The S89 and S890 provide 100 percent shutoff, or
safety lockout on ignition failure or loss of established
flame. C,D and models of the S89 and S890 lockout after
one trial for ignition. G and H models lock out after three
trials for ignition.
One Trial for Ignition Modules
If no flame is sensed by the end of the timed trial for
ignition, the gas control closes and the module locks out.
It must be manually reset by removing power or setting the
thermostat below room temperature for at least 45 sec
onds.
12

If the burner lights normally but goes out during the run
cycle, the gas control closes and the module initiates a
warmup period followed by one trial for ignition. If flame is
not established, the gas control closes and the module
locks out, requiring manual reset.
Three Trial for Ignition Modules
If no flame is sensed by the end of the first timed trial for
ignition, the gas control closes and the module initiates a
second 30 sec. minimum purge cycle, followed by warmup
and a second trial for ignition. If flame is not established the
purge, warmup, trial for ignition cycle is repeated a third
time. If flame is still not established following the third trial,
the gas control closes and the module locks out. It must be
manually reset by removing power or setting the thermo
stat below room temperature for at least 45 sec.
If the burner goes out during the run cycle, the gas
control closes and the module checks for the number of
ignition trials performed during the current call for heat. If
the number is less than three, the module initiates a purge,
warmup and trial for ignition. After the third trial during a
single call for heat, the module locks out. The module must
be manually reset following lockout.
START
MAIN BURNER
OPERATION
THERMOSTAT CALLS
FOR HEAT
T
NO FUME
SIMULATING
FAILURE
INTERNAL SAFE START FUME SYSTEM WILL
CHECK BEGINS. NOT START.
FAILURE
M110A
FIG. 12—S69/S890 NORMAL OPERATING SEQUENCE.
13 68-0070—1

TROUBLESHOOTING AND SER ICE
------------------------ IMPORTANT - ------------------------
1. The following service procedures are provided as
a general guide. Follow appliance manufac
turer’s service instructions if available.
2. All meter readings must be taken within the trial
for ignition period. Once the ignition period ends,
the system must be reset by setting the thermo
stat down for at least 45 sec. before continuing.
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.
5. Only trained, experienced service technicians
should service direct ignition systems.
Perform the checkout steps on page 11 as the first step
in troubleshooting. Then check the troubleshooting guide
(Fig. 13) and the schematic diagram (Fig. 14) to pinpoint
the cause of the problem.
Following troubleshooting, perform the checkout pro
cedure (page 11) again to be sure system is operating
normally.
IGNITION SYSTEM CHECKS
STEP 1: Che k igniter wire harness.
Make sure:
□ Ignition wire does not touch any metal surface.
□ Connections to the module and the igniter-sensor are
clean and tight.
□ Ignition wire provides good electrical continuity.
STEP 2: Che k ignition system grounding. Nui ance
hutdown are often cau ed by a poor or erratic ground.
□ A common ground is required for the module, igniter,
flame sensor and main burner.
— Check for good metal-to-metal contact between
the igniter bracket and the main burner.
— Checkthe ground lead from the GND (BURNER)
terminal on the module to the igniter bracket. Make
sure connections are clean and tight. If the wire is
damaged or deteriorated, replace it with No. 14-18
gauge, moisture-resistant, thermoplastic insulated
wire with 105° С [22Г F] minimum rating. Use a
shield if necessary to protect the ground wire from
radiant heat.
— Check temperature at the igniter ceramic or
flame sensor Insulator. Excessive temperature will
permit leakage to ground. Provide shield if tempera
ture exceeds rating of igniter or sensor.
— If flame sensor or bracket is bent out of position,
restore to correct position.
— Replace igniter and sensor or igniter-sensor with
identical unit if insulator is cracked.
STEP 3: Che k flame sensing ir uit.
□ Make sure burner flame is capable of providing a good
rectification signal. See Fig. 11.
□ Make sure about 3/4 to 1 in. of the flame sensor or
igniter-sensor is continuously immersed in the flame for
best flame signal. See Fig. 11. Bend the bracket or flame
sensor, or relocate the sensor as necessary. Do not
relocate an igniter or combination igniter-sensor.
□ Check for excessive (over 1000° F [538° C]) tempera
ture at ceramic insulator on flame sensor. Excessive
temperature can cause short to ground; move sensor to
cooler location or shield insulator. Do not relocate an
igniter or combination igniter-sensor.
□ Check for cracked igniter-sensor or sensor ceramic
insulator, which can cause short to ground, and replace
unit if necessary.
• Make sure electrical connections are clean and
tight. Replace damaged wire with moisture-resistant
No. 18 wire rated for continuous duty up to 105° С
[221° F],
□ If the igniter is other than a Norton 201 or 271, make
sure it meets the following specifications.
• Igniter must reach 1000° С [1832° F] within 36
seconds with 102 Vac applied.
• igniter must maintain at least 500 M ohms insula
tion resistance between the igniter leadwires and the
igniter mounting bracket.
• Igniter must not develop an insulating layer on its
surface (overtime) which would prevent flame sens
ing.
• Igniter surface area immersed in flame must not
exceed 1/4 of the grounded area immersed inflame.
This would prevent flame sensing.
• Igniter current draw at 132 Vac must not exceed
5 A.
14

START
TURN THERMOSTAT
TO CALL FOR HEAT
DOES S69/S890 GET L
POWER (24 VAC NOMINAL)? 1
YES
MAIN BURNER
LIGHTS
CAU. FOR HEAT ENDS:
SYSTEM SHUTS OFF
I
TROUBLESHOOTING
ENDS
NOTE: BEFORE TROUBLESHOOTING, FAMILIARIZE YOURSELF WITH
START-UP AND CHECKOUT PROCEDURE.
CHECK UNE VOLTAGE POWER.
CHECK LOW VOLTAGE TRANSFORMER.
CHECK LIMIT CONTROLLER.
CHECK AIR PROVING SWITCH (IF USED).
CHECK THERMOSTAT.
CHECK WIRING.
^ YES
MAIN BURNER REMAINS
POWERED AND LIT
NO
YES
CHECK FOR 24 VAC ACROSS VALVE TERMINALS ON S89/S890 DURING TRIAL
FOR IGNITION TIMING. IF NO VOLTAGE, REPLACE S89/S890.
CHECK IGNITER POSITION.
CHECK ELECTRICAL CONNECTIONS BETWEEN S89/S890 AND GAS CONTROL
IF OKAY, REPLACE GAS CONTROL
NOTE: IF S89/S890 GOES INTO LOCKOUT, RESET SYSTEM.
CHECK CONTINUITY OF GROUND WIRE.
MAKE SURE L1 AND L2 ARE NOT REVERSED; THIS WOULD PREVENT FLAME
DETECTION.
CHECK THAT BURNER FLAME COVERS IGNITER/SENSOR OR SENSOR.
CHECK INSULATION ON IGNITER/SENSOR LEADS (C. G AND MOOELS).
CHECK INSULATION ON SENSOR LEADS AND CHECK SENSOR POSITION (D
AND H MODELS).
IF CHECKS ARE OKAY, REPLACE S69/S890 MODULE.
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS
NO
YES
NOTE: IF S89/S890 GOES INTO LOCKOUT, RESET SYSTEM.
CHECK CONTINUITY OF GROUND WIRE.
NOTE: IF GROUND IS POOR OR ERATIC, SHUTDOWNS MAY OCCUR
OCCASIONALLY EVEN THOUGH OPERATION IS NORMAL AT THE TIME OF
CHECKOUT.
CHECK FOR EXCESSIVE HEAT AT IGNITER CERAMIC BASE (TEMPERATURE
ABOVE 1000* F [538е С] CAUSES SHORTS TO GROUND).
IF CHECKS ARE OKAY, REPLACE S89/S890 MODULE.
CHECK FOR PROPER TEMPERATURE CONTROLLER OPERATION.
REMOVE VALVE LEAD AT S89/S890; IF VALVE CLOSES. RECHECK
TEMPERATURE CONTROLLER AND WIRING; IF NOT. REPLACE GAS
CONTROL
REPEAT PROCEDURE UNTIL TROUBLEFREE OPERATION IS OBTAINED.
FIG. 13—S89, S890 TROUBLESHOOTING SEQUENCE.
15 68-0070—1

А
*
L2 LIMIT
CONTROLLER ON-OFF SWITCH
24V
TRANSFORMER
HOT SURFACE
IGNITER RELAY
A
4
L1 (HOT)
.
ALTERNATE
LIMIT
THERMOSTAT
OR CONTROLLER
^ | SURFACE |
Q 1 h- -^ H S jV i IGNITER |
2K2
VALVE
RELAY
INTERNAL
WIRING
EXTERNAL
WIRING
(BURNER) A POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION AS
REQUIRED.
A SEN TERMINAL REPLACES CONNECTION
BETWEEN HSI TERMINAL AND SENSOR CIRCUIT
ON MODELS WITH SEPARATE IGNITER AND
SENSOR. M21gg
FIG. 14—S89/S890 SIMPLIFIED SCHEMATIC.
Honeywell In .
1885 Douglas Drive N.
Golden Valley, MN 55422-4386
International Sales Offices in all principal cities of the world. Manufacturing in
Australia, Canada, Finland, France, Germany, apan, Mexico, Netherlands,
Spain, Taiwan, United Kingdom, U.S.A. PRINTED IN U.S.A. QUALITY IS KEY