Tjernlund SS1C SideShot with UC1 Universal Control (Version X.02) 8504103 Rev 07/02 - Manual (Page 21)

20
SYMPTOM 3: SS1C OPERATES, BUT BURNER DOES NOT
NOTE: Prover status check must be activated, see page 5. For any newly established call for heat the SS1C will run for 60 sec-
onds to try to close the fan prover circuit (P1 to P2). If circuit can not be made after 60 seconds LED's 4 & 5 (Red) will flash in uni-
son, indicating a prover check circuit fault on SS1C start up. The SS1C will shut down and LED's 4 & 5 (Red) will flash in unison,
indicating a prover check circuit fault on SS1C start up. NOTE: If primary control of oil burner locks out during the 1 minute period
the UC1 safety circuit and LED’s 4 & 5 will be reset. If the fan prover makes on start up, but breaks for more than 10 seconds dur-
ing the burner cycle, LED's 4 & 5 (Red) will flash in unison indicating a prover circuit fault. The SS1C will continue to run for 10
minutes to try to make the prover circuit as long as a call for heat exists. After 10 minutes the SS1C will shut down and LED's 4 &
5 (Red) will flash in unison indicating a prover circuit fault. Remove the call for heat and then reestablish to reset the UC1 prover
safety circuit (P1 to P2) & LED’s.
Verify that LED #2 (Green) is lit.
Yes, LED #2 (Green) is lit: Verify that "call jumper" is connected from J1 to J2 on UC1 circuit board. With call for heat established,
verify that wiring is correct by measuring voltage between terminals 1 & 2 and 2 & 4 of UC1 terminal strip. Voltage should be the
same in both cases, if not rewire per appropriate diagram. NOTE: If using the “Dry Contact” interlock method, make sure that the
RED voltage selection jumper is installed on the dry contact tabs.
No, LED #2 (Green) is not lit: Remove call for heat and reestablish a call for heat to reset control. Within 1 minute of call for heat,
carefully jump a wire between P1 & P2 on UC1 control. LED #2 (Green) should light.
No, LED #2 (Green) does not light: Replace UC1 circuit board, part number 950-8801.
Yes, LED #2 (Green) lights up: Remove supply power to UC1. Remove Jumper from P1 & P2. The SS1C high limit is open, the
fan proving switch is not closing, or wiring connections are incorrect/broken. Disrupt call for heat. Push reset button on SS1C high
limit inside electrical box. NOTE: Insufficient post-purge may cause limit to trip. If the limit switch trips, verify that the post-purge
setting is long enough to remove residual heat from the combustion chamber. If high limit trips repeatedly, do not operate the
heater until the source of excessive heat has been determined and repaired. If high limit will not reset and has an open circuit,
replace high limit part number 950-0740.
Initiate call for heat. With SS1C running, verify that venter performance is sufficient to close fan prover. Draft gauge should read a
minimum of -0.04" w.c. at SS1C Fan Prover sampling gauge port. Confirm that proper bleed orifice is installed in fan proving
switch, see page 16.
No, measured draft is less than -0.04" w.c.: Verify that SS1C vent hood draft adjustment is at proper setting, see “Draft
Adjustment Procedure”, page 17. Visually inspect system for blockages. Confirm that maximum BTU/hr. input and vent pipe
lengths are not exceeded. See “Application Table” on page 1 for capacities. Check fan proving switch sensing tube for blockage.
Confirm that proper bleed orifice is installed in fan proving switch, see page 16.
Yes, measured draft is at least -0.04" w.c.: Replace fan proving switch part number 950-0750.
MAINTENANCE
SERVICE TECHNICIAN AND USER REQUIREMENTS
1. SS1C must be visually inspected annually.
2. On oil, verify over-fire draft, CO 2 and smoke readings are all correct. See “Draft Adjustment Procedure” on page 17.
3. Annually inspect vent pipe for evidence of corrosion. If any corrosion is found replace vent pipe and inspect venter.
4. The SideShot blower wheel must be inspected annually. Particulates, such as soot, oil impurities and sheet rock dust, can
prevent proper venting and will cause noise and vibration. Follow instructions, below for motor/wheel assembly removal.
5. Clean all particulate from wheel with a soft metal wire brush and soot cleaner. Clean the pocket of each blade, as well as the
rest of the wheel.
6. A wheel that exhibits large amounts of particulate or appears to be out of round should be replaced with a new wheel.
Instructions for wheel replacement are listed below.
REMOVAL AND REPLACEMENT OF MOTOR/WHEEL ASSEMBLY (DIAGRAM N)
Disconnect power supply from the SS1C and heating equipment when making wiring connections and servicing the SS1C.
Failure to do so may result in personal injury and/or equipment damage. LED #5 (RED) should be off with power removed.
1. Remove electrical box cover.
2. Disconnect the two motor leads from the MTR & N terminals.