Adp SEP-100 Installation Instructions Manual Download Page 14

To Turn Off Gas to Unit

 

 

 Set thermostat to lowest level.

 

 

 Turn off all electrical power to unit if service is to 

be performed.

 

  Turn knob on gas valve 90° clockwise

 to OFF.

 

 

Heating Sequence of Operation

 

 

  When the thermostat calls for heat, the 

combustion air inducer starts immediately.

 

 

  Combustion air pressure switch proves inducer 

operation before allowing power to the ignition 

controller. This switch is factory-set  and no 

adjustment is necessary.

 

 

  After prepurge  of approximately 30 seconds, the 

spark ignition is energized and the solenoid valves 

open in the gas valve. SEP models 230, 250, 300, 

345 and 400 are equipped with a step opening 

valve. During ignition phase of start-up,  a 

pressure of approximately 25% of full rate allows 

even ignition of all burners for several seconds 

before full rate pressure is established.

 

 

  The spark then ignites the gas, the ignition sensor 

proves the flame, and the combustion process 

continues.

 

 

  in the event that the flame is not detected after 

the first 10

−second trial for ignition, the controller 

will repeat steps 3 and 4 an additional two times 

before locking out the gas valve. Ignition control 

will then automatically repeat steps 3, 4, and 5 

after 60 minutes.

 

 

NOTE: To interrupt the 60

−minute lockout period, move 

thermostat from Heat" to OFF" then back to Heat." 
Heating sequence then restarts at step 1.

 

 

  The burners must light without noticeable crossover 

delay. There must be no flame lifting from the burner 

heads, flashback or burning within the burner. The 

flames should be predominantly blue in color and 

should be approximately centered in the tubes with 

no apparent impingement taking place.

 

 

  The ignition control will energize the fan(s) 

approximately 45 seconds  after ignition is 

established.

 

 

  After the thermostat demand is satisfied, the gas 

valve is closed. Five seconds after the demand is 

satisfied, the combustion air inducer is shut off.

 

 

  The ignition control must shut off the system fan 

approximately 150 seconds after the gas valve is 

de-energized.

 

Ignition Control LED

 

 

The ignition control contains a green LED which 

indicates the following:

 

 

TABLE 8

 

IGNITION CONTROL LED

 

 

LED

   

UNIT OPERATION

 

 

 

   

 

Slow

   

Normal Operation 

− No call for heat

 

 

Flash*

 

 

 

   

 

 

   

 

Fast

   

Normal Operation 

− Call for heat

 

 

Flash

 

 

 

   

 

 

   

 

2

 

 

System lockout 

− failed to detect or sustain

 

 

Flashes

 

 

flame

 

 

 

   

 

3

 

 

Pressure switch failed closed before CAI is en-

 

 

Flashes

 

 

ergized or failed open after CAI is energized

 

 

 

   

 

4

 

 

High limit or rollout switch open

 

 

Flashes

 

 

 

   

 

 

   

 

5

 

 

Flame sensed and gas valve not energized

 

 

Flashes

 

 

 

   

 

 

   

 

Steady

   

Loss of power

 

 

Off

 

 

 

   

 

 

   

 

Steady

   

Ignition control failure

 

 

On

 

 

 

   

 

 

 

 

 

 

*When thermostat is placed in continuous fan mode, LED will 

slowly flash.

 

 

High Altitude Adjustment

 

 

In Canada, certification for installation at altitudes over 

4500 feet (1372m) above sea level is the jurisdiction of 

the local authorities.

 

 

Unit may be fired at full input up to 2000 feet (610m) 

above sea level. Above 2000 feet (610m), manifold 

pressure must be adjusted on some units. Adjust 

pressure regulator to pressure shown in table 9 for 

natural gas and table 10 for LP/propane gas.

 

 

In some cases, it is necessary to change the pressure 

switch to ensure proper operation at higher altitudes. 

See table 1.

 

 

NOTE 

− A natural to LP/propane gas changeover kit is 

required to convert the unit in the field. Refer to the 
installation instructions supplied with the changeover kit 
for conversion procedure.

 

 

If unit is installed at an altitude greater than 7500 feet 

(2286m), unit must be derated by four percent for each 

additional 1000 feet (305m) above 7500 feet (2286m).

 

 

The combustion air inducer proving switch is factory set 

and no adjustment is necessary.

 

 

 

 

 

 

 
 

14

Summary of Contents for SEP-100

Page 1: ...ist 17 Template 18 Warranty 19 RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE WARNING FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death or property damage Be sure to read and understand the installation operation and service in structions in this manual Improper installation adjustment alter ation service or maintenance can cause serious injury...

Page 2: ...IEW A B C D E F G H Unit in mm in mm in mm in mm in mm in mm in mm in mm SEP 100 SEP 115 31 5 16 795 32 3 16 817 20 3 16 512 11 1 2 292 19 1 16 484 11 3 4 298 3 1 4 83 7 7 8 200 SEP 145 SEP 175 31 5 16 795 32 3 16 817 23 1 8 588 11 1 2 292 22 1 16 560 8 1 2 216 3 1 4 83 8 11 16 220 SEP 200 SEP 230 SEP 250 31 5 16 795 32 3 16 817 41 1 8 1045 3 11 16 97 40 1016 17 3 4 451 3 1 2 89 8 11 16 220 SEP 30...

Page 3: ...5203 1 SEP 100 through 145 require replacement combustion air inducer pressure switch at altitudes over 5500 feet above sea level 2 SEP 175 requires replacement combustion air inducer pressure switch at altitudes over 2500 feet above sea level TABLE 2 SEP 230 to SEP 400 Gas Part No Stainless Steel SEP 230S SEP 250S SEP 300S SEP 345S SEP 400S Heating Performance Part No Aluminized Steel SEP 230A SE...

Page 4: ...l codes with the current edition of CSA B149 installation compliance codes All electrical wiring and grounding for the unit must also comply with the current edition of CSA C22 1 Canadian Electrical Code These unit heaters are CSA certified for clearances to combustible material listed on the rating plate and table 3 Adequate clearance must be provided around the appliance and around air openings ...

Page 5: ...r air pressure caused by exhaust fans etc If sufficient quantities of combustion air are not available the heater or another appliance will operate in an inefficient manner resulting in incomplete combustion which can result in the production of excessive carbon monoxide CAUTION If indoor air is to be used for combustion it must be free of the following substances or the life of the heat exchanger...

Page 6: ...l or nearly so used to convey flue gases from an appliance or its vent connector to the outside atmosphere The vent connector is the pipe or duct that connects a fuel gas burning appliance to a vent or chimney NOTE Local codes may supersede any of these provisions GENERAL RECOMMENDATION AND REQUIREMENTS SEP unit heaters must be vented in compliance with the latest edition of the National Fuel Gas ...

Page 7: ... the vent at least 4 102 mm above the connected SEP connection When common venting with another SEP unit maintain at least a 4 102 mm vertical separation between the vent connectors 4 Clearance to combustible material is 6 152mm for single wall vent material except where a listed clearance thimble is used Clearance to combustible material for type B 1 vent or factory built chimney is per manufactu...

Page 8: ...compliance codes and with local authorities with jurisdiction 6 Vent termination must be a minimum of 4 feet 1 2m horizontally from any soffit or under eave vent 7 Vent termination must be a minimum of 6 feet 1 83 m from an inside corner formed by two exterior walls If possible leave a 10 foot clearance 8 Vent termination must be a minimum of 10 feet 3m from any forced air inlet includes fresh air...

Page 9: ...perature MIN sealant provided in kit 30 5 CM VENT TERMINATION TEE OR 90 LISTED WALL ELBOW THIMBLE 12 30 5CM THROUGH MINIMUM ABOVE COMBUSTIBLE HIGHEST WALL SNOWFALL DRAIN LOOP WITH WATER TRAP TO CONDENSATE TRAP GROUND LEVEL Provided by installer FIGURE 3 CONDENSATE DRAIN THROUGH TEE PIPE AND DRAIN LOOP DOWNWARD SLOPE ON HORIZONTAL VENT Venting may be single wall 26 GSG galvanized or equivalent stai...

Page 10: ...for Horizontal Vent Applications Unit Part Number Description 66808902 4 upward sloped Cat III vent kit 66809002 4 downward sloped Cat III vent kit SEP 100 66809102 4 90 elbow Cat III optional SEP 115 66809301 4 straight pipe length 6 SEP 145 66809302 4 straight pipe length 12 66809303 4 straight pipe length 36 66808903 5 upward sloped Cat III vent kit SEP 175 66809003 5 downward sloped Cat III ve...

Page 11: ...all a separate fused disconnect switch with the fuse sized according to blower motor size Connect wiring through knockout on the junction box located on the side of the unit heater Refer to heater wiring diagram for connection information Use 18 gauge wire or larger for thermostat connections NOTE Electrically ground unit in accordance with local codes or in the absence of local codes in accordanc...

Page 12: ...in power to unit These devices should be properly labeled by the installer GAS SUPPLY TO UNIT HEATER MANUAL MAIN SHUT OFF DISCONNECT GAS VALVE WILL NOT HOLD NORMAL TEST VALVE WHEN TEST PRESSURES OF 1 2 psig PRESSURES OF 1 2 psig 3 45kPa 3 45kPa OR HIGHER OR HIGHER WILL BE USED CAP UNIT HEATER FIGURE 7 Unit Start Up FOR YOUR SAFETY READ BEFORE LIGHTING WARNING Electric shock hazard Can cause injury...

Page 13: ...ped with an ignition device which automatically lights burners DO NOT attempt to light the burners manually 5 Turn the manual knob on gas valve clockwise to OFF Do not force 6 Wait five minutes to clear out any gas If you then smell gas STOP Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you do not smell gas go to next step 7 Turn manual knob o...

Page 14: ...ately 45 seconds after ignition is established 8 After the thermostat demand is satisfied the gas valve is closed Five seconds after the demand is satisfied the combustion air inducer is shut off 9 The ignition control must shut off the system fan approximately 150 seconds after the gas valve is de energized Ignition Control LED The ignition control contains a green LED which indicates the followi...

Page 15: ...der pressure switch 176722600 No adjustment to switch is required TABLE 10 LP PROPANE GAS MANIFOLD PRESSURES in w g kPa ALTITUDE FEET METERS SEP 0 2000 2001 2500 2501 3500 3501 4500 4501 5500 5501 6500 6501 7500 UNIT 0 610 610 762 763 1067 1067 1372 1372 1676 1677 1981 1981 2286 SEP 100 9 0 9 0 9 0 9 0 8 7 8 4 8 1 SEP 115 2 24 2 24 2 24 2 24 2 16 2 09 2 01 SEP 300 SEP 145 9 0 8 7 8 4 8 1 7 8 7 5 7...

Page 16: ...CAUTION The unit heater and vent system shall be inspected once a year by a licensed professional service technician or equivalent LUBRICATION 1 Combustion air inducer motor bearings are pre lubricated and sealed No further lubrication is necessary 2 Fan motor bearings should be lubricated according to manufacturer s instructions on each motor If no instruction is provided use the following as a g...

Page 17: ... closed 3 Is there a breaker tripped or a fuse blown 4 Is gas turned on at meter 5 Is manual shutoff valve open 6 Is unit ignition system in lock out If unit locks out again call service technician to inspect unit 7 Is pressure switch closed Obstructed flue will cause unit to shut off at pressure switch Check flue passage and outlet SAFETY SHUT OFF VALVE TEST The safety shut off valve test procedu...

Page 18: ...TEMPLATE Location of Combustion Air Inducer Mounting Holes for Rotated Inducer EXISTING HOLE EXISTING HOLE EXISTING HOLE 18 ...

Page 19: ...y installed operated and maintained in accordance with the installation operation and maintenance instructions provided with each unit Unauthorized alteration of ADP product may void this warranty Conditions of Warranty Replacement parts furnished under this warranty will be warranted for the balance of the original warranty term of the unit including any extended warranty and will not serve to ex...

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