Tjernlund SS2G SideShot (Discontinued) 8504075 Rev 1 11/98 - Manual (Page 13)

12
Set draft adjustment according to "Draft
Adjustment Procedure" on page 10.
SS2G 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 SS2G. 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 SS2G
operating, verify 24V exists between SS2G &
Orange leads.
Step 3.
Remove call for heat to SS2G. Check Fan Proving
Switch tube for clear passage.
Step 5.
Remove call for heat to SS2G. Remove the BLUE
and YELLOW wires from SS2G Proving Switch.
Activate thermostat to call for heat. With SS2G
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 SS2G 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 SS2G.
Yes
No Voltage
Tube is Clear
Yes
Yes
Yes
Yes
No
24 V
No
No
No
No
No
SYMPTOM 3: APPLIANCE WILL NOT OPERATE, BUT SS2G DOES
Step 4.
With SS2G running, verify adequate draft at Fan
Proving Switch. Draft Gauge should read -.45"
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 SS2G High Limit by depress-
ing button located on the center of the
switch.
Replace Fan Proving Switch
Part # 950-0016.