ClimateMaster Ultra Classic VT 036 Installation, Operation & Maintenance Instructions Manual Download Page 22 | Manualshive

Page: 22 / 32

ClimateMaster Ultra Classic VT 036 Installation, Operation & Maintenance Instructions Manual Download Page 22

Page 22

Ultra Classic (VT) Series

TROUBLESHOOTING INFORMATION

General

CXM board troubleshooting in general is best
summarized as simply varifying inputs and outputs.
After this process has been varified, confidence in board
operation is confirmed and the trouble must be else
where. Below are some general guidelines required
for developing training materials and procedures when
applying the CXM control.

Field Inputs

All inputs are 24VAC from the thermostat.and can be
varified using a Volt meter between C and Y, G, O, W. See
the I/O Reference table below.

Sensor Inputs

All sensor inputs are "paired wires" connecting each
component with the board. Therefore continuity on
pressure switches, and the condensate switch can be
checked at the board connector.

The thermistor resistance should be measured with the
connector removed so that only the impedance of the
thermistor is measured. If desired this reading can be
compared to the chart shown in the thermistor section
of this manual based upon the actual termperature of
the thermistor clip. An ice bath can be used to check
calibration of a thermistor if needed.

Outputs

The compressor relay is 24VAC and can be varified using
a voltmeter. The fan signal is passed through the board
to the external fan relay. The alarm relay can either be
24VAC as shipped or dry contacts (measure continuity
during fault) for use with DDC by clipping the J1 jumper.
Electric heat outputs are 24VDC ground sinking and
require a voltmeter set for DC to varify operation. See the
I/O Reference table below.

Test Mode

Test mode can be entered for 20 minutes by shorting the
test pins.

��

��

��

��

�

�

��

�

�

��

�

�

��

�

�

��

�

�

��

�

�

��

��

�

��

��

�

��

�

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

��

�

��

Table 10: CXM Input/Output Reference Table

«
...
20
21
22
23
24
...
»

Summary of Contents for Ultra Classic VT 036

Page 1: ...Information 22 Troubleshooting Analysis 23 Major Replacement Components 24 Unit Start Up Procedure 26 Operating Limits 26 Pressure Drop Table 28 Operating Pressures 28 Warranty 31 Preventive Maintena...

Page 2: ...ts have been received Inspect the carton or crating of each unit and inspect each unit for damage Assure the carrier makes proper notation of any shortages or damage on all copies of the freight bill...

Page 3: ...unit start up read all manuals and become familiar with the unit and its operation Thoroughly check the system before operation Prepare units for installation as follows 1 Compare the electrical data...

Page 4: ...Page Ultra Classic VT Series Physical Dimensions INSTALLATION...

Page 5: ...e connector is recommended for both discharge and return air duct connections on metal duct systems Uninsulated duct should be insulated with a minimum of one inch duct insulation Application of the u...

Page 6: ...essure temperature taps for serviceability run When some sagging in the condensate line may be anticipated as in a long line of plastic pipe or when double trapping may occur Also vent when large unit...

Page 7: ...re operation Flush the loop with a high volume of water at a high velocity 2 fps in all piping both directions The steps below must be followed for proper flushing Fill loop with water from a garden h...

Page 8: ...s however your local territory manager should be consulted for the antifreeze best suited to your area Freeze protection should be maintained to 15 F below the lowest expected entering loop temperatur...

Page 9: ...cal building and zoning department to assure compliance in your area OPEN LOOP WELL WATER SYSTEMS Water Control Valve Note the placement of the water control valve Always maintain water pressure in th...

Page 10: ...e examined for feasibility before installation City water should not be used as a source in areas where water temperatures fall below 45 F ClimateMaster should be consulted when sizing earth loops for...

Page 11: ...hown in Figure 15 is the most efficient system providing the maximum storage and temperate source water to the desuperheater Using a concentric hot water tank connection fitting eliminates the need to...

Page 12: ...eat available from the refrigeration system and con serve the most energy On tanks with both upper and lower elements and thermostats the lower element should be turned down to 100 F or lowest setting...

Page 13: ...own on the unit serial plate Line and low voltage wiring must be done in accordance with local codes or the National Electric Code whichever is applicable Unit Power Connection Line voltage connection...

Page 14: ...used 2 stage heat 2 stage cool or 3 stage heat 2 stage cool Note Power must be off to the unit for at least three seconds before the ECM motor will recognize a speed change The motor will recognize a...

Page 15: ...17B0019N01 DIP Switch Version II Version II 17B0019N01 Version II 17B0019N01 DIP Switch DIP Switch ON OFF DIP Switch Version II 17B0019N01 DIP Switch 17B0019N01 SW9 Table 6 ECM Board Tap Settings Y G...

Page 16: ...wg hp Setting Stg 2 Stg 1 Fan Stg 2 Stg 1 Fan Setting Mode 4 1290 710 650 1010 550 650 4 1290 036 0 5 1 2 3 1200 660 600 940 520 600 3 1200 2 1110 610 560 870 480 560 2 1110 1 1020 560 510 1 1020 4 1...

Page 17: ...valve takes approximately 60 seconds to open very little water will flow before 45 seconds and it activates the compressor only after the valve is completely opened by closing its end switch Only rel...

Page 18: ...Page 18 Ultra Classic VT Series Electrical Schematic...

Page 19: ...ault For Diagnostic ease at the thermostat the alarm relay will also cycle during test mode The Alarm relay will cycle on and off similar to the status LED to indicate a code representing the last fau...

Page 20: ...Switch input is bypassed for the initial 60 seconds of a compressor run cycle Low Pressure Lockout Code 3 thermistor temperature must be below the selected freeze protection limit setting for 30 cont...

Page 21: ...ng Stage 1 mode Y becomes active The first time after power up that there is a call for compressor the compressor will follow a 5 to 80 second random start delay There will also be a 5 min compressor...

Page 22: ...d at the board connector The thermistor resistance should be measured with the connector removed so that only the impedance of the thermistor is measured If desired this reading can be compared to the...

Page 23: ...ower before servicing can cause severe personal injury or death TROUBLE ANALYSIS If operational difficulties are encountered be sure to perform the preliminary checks before referring to the Troublesh...

Page 24: ...cooling Check fan motor operation and airflow restrictions Too high of external static Check static vs blower table X Air Temperature out of range Too much cold vent air Bring entering air temp within...

Page 25: ...ng in water heat exchanger Perform Scaling check and clean if necessary X X Inlet Water too Hot or Cold Check load loop sizing loop backfill ground moisture High Head Pressure X Reduced or no Air flow...

Page 26: ...ing Conditions GT X Units Units start and operate in an ambient of 45 F with entering air at 45 F entering water at 32 F and both air and water at the stated flow rates of ISO ASHRAE ARI 13256 1 for i...

Page 27: ...it pressure drop across the heat exchanger versus the data in Table 12 Heat of rejection can be calculated and compared to specification catalog f Check air temperature drop across the coil when compr...

Page 28: ...Page 28 Ultra Classic VT Series Table 14 Unit operating pressures and temperatures Table 12 Water Temperature Change Through Heat Exchanger Table 13 Water Pressure Drop Table...

Page 29: ...Ultra Classic VT Series Page 29 Notes...

Page 30: ...Page 30 Ultra Classic VT Series...

Page 31: ...or use of CM s products or 13 Electricity or fuel costs or any increases or unrealized savings in same for any reason whatsoever CM is not responsible for 1 The costs of any fluids refrigerant or sys...

Page 32: ...t can erode the heat exchanger wall and ultimately produce leaks Filters Filters must be clean to obtain maximum performance They should be inspected every month under normal operating conditions and...

Reviews:

No comments

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands