FINAL CHECKOUT

Before putting the burner into service, check out the installation by using the Checkout procedures in the instruc- tions for the appropriate flame safeguard control. After completing the checkout, run the burner through at least one complete cycle to verify proper operation.

C7015A

ADJUSTMENTS AND CHECKOUT • TROUBLESHOOTING

! CAUTION

n

Do not put the system into operation until all Checkout tests in the instructions for the appropri- ate flame safeguard control and any specified in the burner installation instructions are satisfactorily completed.

Troubleshooting

,A! CAUTION

v \

1.Be extremely careful while troubleshooting the detector; line voltage is present on some of the terminals on the wiring subbase or terminal strip when power is on.

2.Open the master switch to disconnect power before removing or installing the detector, there may be more than one disconnect involved.

If you cannot obtain a satisfactory flame signal while adjusting the sighting position of the detector, follow these procedures. If you encounter other problems in the system, refer to Troubleshooting in the instructions for the appropri- ate flame safeguard control.

EQUIPMENT REQUIRED

1.Voltmeter(HoneywellW136Aorequivalent)withOto 300 Vat scale.

2.Microammeter (Honeywell W136A or equivalent) with 0 to 25 microampdc range.

3.W136ACableConnector,partno. 196146, or 117053 Meter Connector Plug or equivalent (required for some meters).

4.A volt-ohm meter with a zero to 5 or 10 Vdc scale and a sensitivity of 20,000 ohm/volt is suggested for BCS7700 control flame signal measurements. If the control has the Keyboard Display Module option, flame voltage is displayed on the module.

5.A one megohm/volt meter with a zero to 5 or 10 Vdc scale is recommended for 7800 SERIES control flame volt- age measurements. If the control has the Keyboard Display Module option, flame voltage is displayed on the module.

6.Replacement parts-see Specifications.

TROUBLESHOOTING PROCEDURES Firstperfonn thePreliminary Inspection. Then follow the

applicable procedures for either a low reading or a zero reading on the flame signal meter. After reinstalling the detector, recheck the meter reading. Adjust the position of the detector to try to obtain the proper fIame signal. If the procedures are completed and a satisfactory flame signal cannot be obtained, replace the detector.

PRELIMINARY INSPECTION

1.Makesurethat the flame is properly adjusted and is not too lean.

2. Checkfortheproperlinevoltage. Makesurethemaster switch is closed, connections are correct, and power supply is of the correct voltage and frequency.

3.Check the detector wiring for defects including:

. incorrect connections.

• wrong type or size of wire. • deteriorated wire.

• open circuits. • short circuits.

• leakage paths caused by moisture, soot, or dirt.

4.With the burner running, check the temperature at the detector. If it exceeds 125” F [52” Cl:

add additional insulation between the wall of the combustion chamber and the detector.

add a shield or screen to reflect radiated heat away from the detector.

add cooling (refer to Sight Pipe Ventilation, see Installation).

PROCEDURE FOR A LOW METER READING

1.Remove the detector and clean the focusing lens with a soft, clean cloth.

2. If the focusing lens is broken or damaged, or if it is coated with a substance that cannot be cleaned off, replace the 110634A Bushing (which includes the focusing lens).

3.Clean the inside of the sight pipe before reinstalling the detector.

4. If the meter reading is still too low, replace the lead sulfide cell (Fig. 8).

5.If the meter reading is still too low, replace the plug-in amplifier.

6.If you still cannot obtain a proper flame signal, replace the C7015A Infrared Flame Detector.

PROCEDURE FOR A ZERO METER READING

1.Replace the lead sulfide cell (Fig. 8). Then recheck the flame signal.

2. If there is still no flame signal, replace the plug-in amplifier.

3.If you still cannot obtain a meter reading, replace the entire C7015A Infrared Flame Detector.

IMPORTANT: At the completion of troubleshooting, be sure to perform the Adjustments and Checkout, page 10.

13

60-2306-5

Page 12 Page 14
Page 13
Image 13
Honeywell C7015A manual Adjustments and Checkout Troubleshooting
Page 12 Page 14

C7015A specifications

The Honeywell C7015A is a versatile, high-performance electronic air temperature sensor designed for use in a variety of HVAC applications. Recognized for its reliability and advanced technology, this sensor ensures accurate temperature measurements, contributing to the overall efficiency of climate control systems.

One of the main features of the C7015A is its exceptional sensing accuracy. The sensor utilizes a thermistor-type temperature sensing element, which allows for precise measurements across a broad temperature range. This precision is critical in maintaining the desired environmental conditions in residential, commercial, and industrial settings.

Another key characteristic of the Honeywell C7015A is its robust design. It is built to withstand a range of installation environments, ensuring longevity and consistent performance. The sensor comes with an IP rating that indicates its resistance to dust and moisture, making it suitable for various indoor and outdoor applications. Its durable construction ensures that it can operate effectively even in challenging conditions, enhancing its reliability.

The C7015A is designed for easy installation and integration into existing systems. It features standard electrical connections, which allows for straightforward wiring to a variety of control systems. Additionally, the sensor can be utilized with a multitude of Honeywell control units, enhancing system compatibility and flexibility. This interoperability is a significant advantage for HVAC technicians and engineers who require seamless integration with existing equipment.

Furthermore, the C7015A leverages advanced technologies such as digital signal processing to minimize noise and improve the accuracy of temperature readings. This technology ensures that the sensor can provide stable output even in fluctuating conditions, which is vital for precision climate control.

In summary, the Honeywell C7015A electronic air temperature sensor is characterized by its high accuracy, durable construction, ease of installation, and advanced technological features. These attributes make it a reliable choice for HVAC professionals aiming to optimize temperature control in various applications, ensuring both comfort and energy efficiency. The C7015A stands as a testament to Honeywell's commitment to quality and innovation in the field of environmental control solutions.
Top Page Image Contents