ClimateMaster Ultra Classic VT 036 Скачать руководство пользователя страница 21 | Manualshive

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ClimateMaster Ultra Classic VT 036 Скачать руководство пользователя страница 21

Ultra Classic (VT) Series

Page 21

Diagnostic Features

The Status LED on the CXM control advises the
serviceman of the current status of the CXM control. The
status LED can display either the current CXM mode or
the last fault memory if in test mode. See Table 8 for a
complete listing of codes.

Unit Operation Description

PowerUp

-

The unit will not operate until all the inputs

and safety controls are checked for normal conditions.

Note: The compressor will have a 5 minute anti-short

cycle delay at power-up.

Standby

-

In Standby mode, Y and W inputs are not active.

Inputs O and G may be active. Compressor will be off.

Cooling

-

To enter Cooling mode, Y and O become

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
anti-short cycle protection time as well. After the random start
delay, the compressor relay is energized. On all subsequent
compressor calls, the random start delay is omitted.

Heating Stage 1

-

To enter Heating 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 anti-short cycle protection time as well. After
the random start delay, the compressor relay is energized.
On all subsequent compressor calls, the random start
delay is omitted.

Heating Stage 2

-

To enter Heating Stage 2 mode, W

becomes active (Y already active). The Compressor
relay remains on. EH1 is turned on immediately. With
continuing Heating Stage 2 demand, EH2 will turn on
after 10 minutes. The EH2 will not turn on in heating (or
will turn off if already on) if loop temperature is above
approximately 50°F (FP1 >45°F).

Emergency Heat

-

In Emergency Heat mode, W

becomes active while Y is not active. EH1 is turned on
immediately. With continuing Emergency Heat demand,
EH2 will turn on after 5 minutes. The FP1 and FP2
temperatures do not effect emergency heat operation.

ECM Control Board

The UltraClassic also employs an ECM board that features:
• Thermostat terminal connections
• Thermostat signal diagnostic LED's
• Airflow selection
• Airflow LED (100 cfm per flash)
• Dehumidification Mode Jumper

Table 9: Fault Description Table

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CXM CONTROL DESCRIPTION

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Содержание Ultra Classic VT 036

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

Страница 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...

Страница 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...

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