02/04/2014 13
NI804
Additional Information
WarmFlo Elements Mechanical Hi-Limit
For this unit there is no LED’s representing mechanical, automatic reset, hi-limit.
ECM™ Blower Motor
The “setup or programming” section outlined the peg jumper programming for selecting blower motor
speed according to the nominal or low volume heat and cool installed tons.
Room Thermostat “Fan On” Mode
This sets up continuous air at 50% of the pin jumper selected cool. The ECM™ motor is very economical
at this speed.
Handheld Analyzer/Laptop Software
This test tool and/or software is available for temperature offset, field altering the program chip
parameters and setup, and general assistance for troubleshooting.
Note:
This unit is designed to operate in a total electric application. Therefore, SOT-S and MU are not
permitted and should always remain disabled.
Troubleshooting
CFM CALCULATION
– By measuring the temperature rise across the Electro-Mate, the actual CFM
can be quite accurately determined. The airflow and Electro-Mate unit must be operating in a stable
condition for at least 10 minutes. If it is cycling on temperature limit, this calculation will be of no value.
The accuracy of this formula will depend upon uniform and average temperature rise plenum
thermometer readings and the accuracy of both the clamp-on amp meter and AC voltmeter. NOTE: The
volts x amps x 3.4 value is the same as Btuh output.
CFM =
Volts x Amps x 3.4
Temperature Rise x 1.08
Sensor Temperature Calibration
- Both remote sensors are digital electronic and factory calibrated.
Normally these do not require field calibration or verification. However, if sensor temperature error is
determined, there are two field calibration techniques. Proceed with extreme caution.
1.
The outdoor sensor can be calibrated with ice (32
F). Notice a small push button next to the
sensor terminal block, with the sensor at 32°F, push and hold for approximately ten seconds.
When green LED “blinks” at you, release and now the outdoor sensor is set at 32°F.
Caution:
This is not a temperature checking situation. If you proceed with this function, the
sensor automatically goes to 32°F.
2.
Use WarmFlo II Analyzer test set or purchase special PC software disc and PC serial port cable.
These plug-in devices allow direct readout of both temperatures, allows a visual determination of
WarmFlo II internal temperature settings, and can be used to offset either temperature sensor for
troubleshooting and demonstration purposes. This is especially valuable during summer
installation. Call factory and order test set device.
Comment:
Also see the “WarmFlo Information” document (HD320) included with this manual.
Troubleshooting/Repair Helps
1.
This WarmFlo II controller contains several interference suppression components, but as an electronic
logic product, unpredictable and unusual transients or interferences may sometimes cause strange results.
If the WarmFlo II controller is “acting strange”, one immediate step would be power down reset. Simply
