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*17-1-573 (A/E32C-45A) environmental control unit > !003 > Flashcards

!003 Flashcards

1
Q

refrigerant

A

R134A @ 7lbs 5oz

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2
Q

delivers temperature range of __°F to __°F in ambient temperatures of __ °F to __°F

A

45°F - 90°F, -25°F - 125°F

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3
Q

ECU primary power requirements

A

208VAC, 3-phase, 50/60Hz

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4
Q

cooling and heating capacity _____BTU/hr, ____BTU/hr @ __Hz

A

36,000 BTU/HR, 76,000 BTU/HR @ 60Hz

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5
Q

maximum input- _____ watts

A

17,400 watts

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6
Q

compressor stats- ___RPM, ____ compressor, ____

A

3500 RPM, scroll compressor, sealed hermetic

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7
Q

compressor(B1) power requirement

A

200-220 VAC, 3-phase, 50Hz;

200-230 VAC, 3-phase, 60Hz

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8
Q

compressor RPM @ 60Hz, 50Hz

A

3,500 at 60Hz;

2,900 at 50Hz

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9
Q

high(S1) / low(S2) pressure cutout switches @ ___psig and ___psig

A

375psig, 7psig

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10
Q

suction/discharge pressures

A

35psig/150psig @ 90°F

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11
Q

1HP indoor blower(B2) power requirements

A

208-220VAC, single-phase, 50/60 Hz, 6.6amp

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12
Q

outdoor fan(B3) blade(4) length

A

20” diameter

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13
Q

enables the ECU to switch from cooling to heating or visa versa

A

reversing valve assembly

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14
Q

enables the ECU to switch from cooling to heating or visa versa

A

reversing valve assembly (24VAC)

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15
Q

indoor/outdoor fan relays __ and __

A

K2, K3

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16
Q

compressor contractor(relay) __

A

K1

17
Q

supplemental heating units activate when outdoor temp is less than __°F

A

1 @ 68°F, #2 @ 40°F

18
Q

supplemental heating units failsafe fuse links open at ___°F

A

306°F

19
Q

high temp cutout switch located in the air return plenum over the indoor coil is set at __°F

A

160°F

20
Q

high temp cutout thermostat switch

A

160°F

21
Q

cool control circuits are activated when temp is above __°F

A

76°F

22
Q

defrost cycle is __min

A

30 min

23
Q

supplemental heaters provide ___BTU/hr

A

41,000 BTU/hr

24
Q

frost may for on the coils in heating mode when the outdoor temp is below __°F.

A

50°F

*17-1-573 (A/E32C-45A) environmental control unit (5 decks)

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