GBT A2-035, Installation & Operating Instructions Manual

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Page 28
SYMPTOM POSSIBLE CAUSE CHECKS & REMEDIES
The Flow Switch
Keeps Tripping Or Will
Not Close
Water Flow Rate Too
Low
Ensure Valves In The Water Lines Are Open
Ensure The Pump Is Operating Correctly. Replace Or
Upgrade Pump If Required.
Excessive Scaling
Inside The Heat
Exchanger.
The Heat Exchanger Should Be De-limed. Contact Your
Local Green Boiler Representative For Assistance. Refer
To The INSTALLATION And MAINTENANCE Sections Of
This Manual For Information To Prevent Future Heat
Exchanger Scaling.
Flow Switch Set
Incorrectly
Adjust Flow Switch Set Point. Refer To OPERATION
Section Of This Manual
An Appliance That Has
Been In Operation For
Over A Year Starts To
Have Any Of The
Following Symptoms:
Stack Temperature
Over 450
o
F, A Water
Temperature Rise
Through The Heat
Exchanger More Than
5
o
F (3
o
C) Rise Higher
Than Originally Set, Or
Trouble Proving Water
Flow
Excessive Scaling
Inside The Heat
Exchanger
If One Of The Symptoms Occurs, Check For The Other
Symptoms. If Two Or More Happen At The Same Time,
The Heat Exchanger Should Be De-limed. Contact Your
Local Green Boiler Representative For Assistance. Refer
To The INSTALLATION And MAINTENANCE Sections Of
This Manual For Information To Prevent Future Heat
Exchanger Scaling.
Knocking Sounds
From The Heat
Exchanger
Excessive Scaling
Inside The Heat
Exchanger
The Heat Exchanger Should Be De-limed. Contact Your
Local Green Boiler Representative For Assistance. Refer
To The INSTALLATION And MAINTENANCE Sections Of
This Manual For Information To Prevent Future Heat
Exchanger Scaling.
Refer to De-Liming Procedure Included With Kit Number
W3700001