P-K THERMIFIC
®
Gas-Fired Boiler
46
Correct air adjustment is essential to the efficient operation of this boiler. If an adjustment in the
combustion appears necessary, the flue gas composition should be checked with a carbon dioxide (CO
2
)
or oxygen (O
2
) analyzer and compared to the values listed on the fire test sticker on the back of the
boiler. If an adjustment is necessary, call a qualified installer or service agency that has been trained on
the Harsco Industrial, Patterson-Kelley P-K THERMIFIC
®
boiler.
5.1.3 Monthly
1. Test flame detection by voltage reading at the control programmer.
2. Test high-limit control (refer to Section 3.9).
3. Test operating temperature controls by reducing or increasing temperature setting as necessary to
check burner operation (refer to Section 3.9).
4. Check flue gas temperature at outlet. If there is a temperature increase over previous readings, the
probable cause is soot or water-scale buildup.
5. Test the water flow switch (refer to Section 3.9).
6. Test low gas pressure switch (and high gas pressure switch if supplied) (refer to Section 3.9).
7. Inspect and clean the air inlet screen of any accumulated dust or lint.
Installation and service must be performed by a qualified installer or service agency that has been
trained on the Harsco Industrial, Patterson-Kelley P-K THERMIFIC
®
boiler.
5.1.4 Semi-Annually
In addition to the recommended monthly service:
1. Clean burner of any accumulated dust or lint (refer to Section 5.2).
2. Inspect burner for any signs of deterioration or corrosion. Replace immediately if deterioration or
corrosion is evident.
Installation and service must be performed by a qualified installer or service agency that has been
trained on the Harsco Industrial, Patterson-Kelley P-K THERMIFIC
®
boiler.
The blower motor is permanently lubricated and does not require periodic lubrication.
5.1.5 Annually
1. Test flame detection by voltage reading at the control programmer.
2. Test high-limit control (refer to Section 3.9).
3. Test operating temperature controls by reducing or increasing temperature setting as necessary to
check burner operation (refer to Section 3.10).
4. Check flue gas temperature at outlet. If there is a temperature increase over previous readings, the
probable cause is soot or water scale build-up.
5. Test the water flow switch (refer to Section 3.9).
6. Test low gas pressure switch (and high gas pressure switch if supplied) (refer to Section 3.9).
7. Inspect and clean blower fan and inlet screen of any accumulated dust or lint.
Summary of Contents for P-K THERMIFIC N700
Page 2: ...P K THERMIFIC Gas Fired Boiler 2...
Page 53: ...P K THERMIFIC Gas Fired Boiler 53 6 1 1 2 On Off Sealed Combustion Diagram 700 1000...
Page 54: ...P K THERMIFIC Gas Fired Boiler 54 6 1 1 3 On Off Sealed Combustion Diagram 1500 1700 2000...
Page 56: ...P K THERMIFIC Gas Fired Boiler 56 6 1 2 2 Lo Hi Lo Sealed Combustion Diagram 1500 1700 2000...
Page 58: ...P K THERMIFIC Gas Fired Boiler 58 6 1 3 2 Factory Installed Low Water Cut Off Diagram...
