Honeywell S89C Manual page 6

Connect Vent Damper
The D80B Vent Damper can be used with all ignition
modules, although the Molex plug provided on some
modules simplifies wiring connections when used with the
D80D Plug-In Vent Damper. Once a module with vent
damper plug has powered a vent damper circuit, it cannot
be used in a gas system without a vent damper. A non-
replaceable fuse in the module blows on initial power-up.
Once this fuse has blown the module won't work unless the
vent damper is connected.
To connect the plug-in model to D80D:
1. Remove the plug from the terminal strip on the
ignition module case and discard.
2. Using the wiring harness supplied, insert the 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.
Connect 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 J 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 J 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,J/S890C,G,J with
combination igniter-sensor in a variety of systems,
with alternate connections for vent damper plug
models. Remember, however, that a vent damper
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
FIG. 2—S89C, G, J AND S890C, G, J IN AN ATMOSPHERIC BURNER HEATING SYSTEM.
DUAL VALVE
COMBINATION
S89C.G.J/S890C.G.J HOT
GAS CONTROL
SURFACE IGNITION CONTROL
MV
о V A L V E
m
V A L V E JG N D ) H £j
T H -W
.2 4 V JG N D ) _ ^
Д "
G N D (B U R N E R )
V E N T
□
D A M P E R P L U
о A
■ BURNER
GROUND
- 1
г
Ж
THERMOSTAT
OR CONTROLLER
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.
Connect 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.
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1 H S I
=1
Z3
.
A
g
о
A
CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO
TRANSFORMER.
A
FOR MODULE WITH TH-W TERMINAL AND VENT DAMPER PLUG,
JUMPER 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.
6