Tjernlund SS2 SideShot (Discontinued Version - Pre UC1 Universal Control) 8504063 Rev B 11/99 User Manual

Page 16

Set draft adjustment according to "Draft
Adjustment Procedure" on page 12.

SS2 and appliance are not interlocked
correctly or malfunction of appliance controls.
Refer to electrical diagrams in this manual and

appliance manufacturer's troubleshooting
guide.

Remove inlet assembly tubing blockages or
crimps in silicone tubing connection. Replace
tubing if necessary.

Replace High Limit Switch
Part # 950-0018.

Check firing rate of appliance and "equivalent"
vent pipe length. They should not exceed the
maximum capacity of the SS2. See
“Application Table” on page 1.

CAUTION: Do not operate appliance until source
of excessive heat has been determined. Check
for Vent Hood blockage or burner malfunction.

Step1.
Verify draft adjustment has been made.

Step 2.
With the appliance calling for heat and SS2
operating, verify proper control voltage exists
between terminals "Y" and "R" of terminal strip.

Step 3.
Remove call for heat to SS2. Check Fan Proving

Switch tube for clear passage.

Step 5.
Remove call for heat to SS2. Remove the BLUE
and YELLOW wires from SS2 Proving Switch.
Activate thermostat to call for heat. With SS2
running, check for continuity across the COM and
N/O terminals of Fan Proving Switch. Result:
Contacts on switch should be closed.

Step 7.
Reset the SS2 High Limit by depressing the
button located on the center of the switch.
Appliance should operate.

Step 6.
Replace BLUE to COM and YELLOW to N/O
on Fan Proving Switch. With appliance calling
or heat, verify that the cooling fan is opera-
tional with SS2.

Yes

No Voltage

Tube is Clear

Yes

Voltage

Exists

SYMPTOM 3: APPLIANCE WILL NOT OPERATE, BUT SS2 DOES

Step 4.
With SS2 running, verify adequate draft at Fan
Proving Switch. Draft Gauge should read -.40"
w.c. minimum at Fan Proving Switch Test Port.

Replace Cooling Fan if it will not operate.
Part # 950-0020. After cooling fan has been
replaced reset SS2 High Limit by depressing
button located on the center of the switch.

Replace Fan Proving Switch
Part # 950-0016.