44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170. 
Website: https://www.add-furnace.com/ โทร: 02-888-3472 
Line ID: @add11 e-mail: add028883472@gmail.com 
 
Fig. 10—S8600F,H,M; S8610F,H; S8660D; S8670D connections in a commercial water heater control system.
 
CHECKOUT 
Check out the gas 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 1, for 
more information.
 
• 
As the first step in troubleshooting.
 
• 
Any time work is done on the system.
 
 
 
 
 
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.
 
❏
 
Do gas leak test ahead 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. Recheck with soap and water.
 
 
STEP 2: Review Normal Operating Sequence and Module 
Specifications.
 
❏
 
See OPERATION, page 12, and APPLICATION,
 
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. 
 
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.
 
❏
 
Set thermostat below room temperature and wait one 
minute before continuing.
 
 
STEP 5: Check Normal Operation.
 
❏
 
Set thermostat or controller above room temperature to
 
3 
MAXIMUM CABLE LENGTH 3 ft [0.9 m].
 
4  CONTROLS IN 24V CIRCUIT MUST NOT BE IN 
GROUND LEG TO TRANSFORMER.
 
 
5  DO NOT REMOVE VENT DAMPER PLUG.
 
 
6  REMOVE JUMPER AND CONNECT SENSE 
TERMINAL ON TWO ROD APPLICATION ONLY.
 
1 
POWER SUPPLY. PROVIDE DISCONNECT 
MEANS AND OVERLOAD PROTECTION AS 
REQUIRED.
 
 
2 
ALTERNATE LIMIT CONTROLLER LOCATION.
 
DUAL VALVE COMBINATION
 
GAS CONTROL
 
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.
 
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.