background image

12

2.  After allowing the unit to run for several 

minutes, set the temperature selector 
above room temperature.

-  The fan and compressor cycles off with 

the thermostat.

-  The blower should also stop unless fan 

switch is set to “ON” position.

System Heating — 

If the unit has been equipped 

with optional electric heater kits, set the system 
thermostat switch to HEAT and set the thermostat 
fan switch to AUTO. Verify that the compressor 
and outdoor fan are not energized but that the 
blower and heaters are. Check for warm air at 
the supply registers.

DEFROST CONTROL BOARD OPERATION 
AND TESTING

1. Terminals “R”-”C” must have 24±V present 

between them in order for the time delay and 
defrost sequences to be operational.

2. Jumper the “T2”-”DFT” test pins. This will 

indicate to the board that the defrost T-stat 
is closed(if the compressor is running). 
Defrost T-stat is closed at 32° or below and 
is open at 68° or above.  But it’s state is 
unknown if the temperature is between 32°F 
and 68°F.  The defrost thermostat tells the 
board whether a defrost cycle needs to be 
started or terminated.  With the DFT closed 
the unit will run for 30/60/90 minutes in heat 
mode and then defrost the outdoor coil.  The 
defrost will turn off the outdoor fan, turn on the 
compressor and raise the coil temperature to 
68°F.  This will open the DFT and terminate 
the defrost.  If the DFT does not open the 
defrost will end after 10 minutes.

3.  Defrost board speed-up.  With compressor 

running in heat mode, next jump the “Test” 
pin to “C” on terminal strip. This will initiate 
a defrost test in 5, 10 or 15 seconds (This 
is determined by the 30, 60 or 90 minute 
defrost pin settings. The factory setting will 
be 30 minutes).  Note that this will bypass the 
compressor off delay when the unit goes into 
defrost test and if left in defrost test, the delay 
will be bypassed when the test is terminated 
by the processor.  If the jumper is removed 
before the test is over the processor will 
perform the remainder of a normal defrost.  
See step 2 above.

4.  Remove the jumpers.

Note: 

The delay/no-delay pin concerns 

compressor operation during defrosts. The default 
setting is delay. Reciprocating compressors 

should only use this setting in conjunction with 
an approved hard start kit. Scroll compressors 
that have noise issues while going into or coming 
out of defrost should use this 30 second delay to 
reduce the defrost noise. To switch from no-delay 
to delay remove the pin from the “no-delay” pin 
location and shift it to the “delay” pin location.

Speed up changes:

Manually initiating a defrost will cause the 

compressor to run continually when entering 
defrost.

Normal defrost operation:

To test normal defrost operation when the 
temperature is above 35°F, jumper “R” to 
“DFT” on the 624656 board and allow the unit 
to run for 30 minutes.  Defrost will continue 
until the “R” to “DFT” jumper is removed or 
for 10 minutes.  Remove the jumper.

The 5 minute time delay feature can be shortened 
1 time to 1 second by jumping the “Test” to “C” 
terminal.  Remove the jumper and repeat as 
desired.

Note: If jumper is left on the “Test” to “common” 
pins permanently, the defrost cycle will become 
inoperable. 

Defrost Test Procedure for 624656

1.  Jumper “T2” to “DFT” at the test terminals.
2.  With unit running in heat mode, short the 

“TEST” terminal to the common terminal near 
it.  This will speed up the board and cause 
it to enter defrost mode in 5/10/15 seconds 
depending on the defrost time selection. 

 

Compressor delay will not function during 
speed-up.

3.  This test will end in 5 seconds if the “TEST”-

common short is not removed.

4.  Remove both the short and the “T2” to “DFT” 

jumper to terminate the defrost cycle.  The 
30 second compressor delay should operate 
normally.

5.  Test is complete, reset thermostat to home 

owner preference.

Heating —

 For heat pumps or air conditioners 

provided with heating equipment, lower the 
thermostat temperature to the lowest obtainable 
setting and set the thermostat function switch 
to HEATING.  The indoor blower and outdoor 
unit should stop running.  Increase the set-point 
temperature of the thermostat to the maximum 
setting. Verify that the heating equipment has 
been energized (i.e., fossil fuel burner operat-
ing, etc.) and that the indoor blower energizes 
after a short period of time.  Feel the air being 

Содержание Q4SD-X24K

Страница 1: ...oning appliances Some local codes require licensed installation service personnel for this type equipment All installations must be in accordance with these instructions and with all applicable nation...

Страница 2: ...gas to a liquid 5 The blower circulates the heat throughout the home via the supply duct 6 The refrigerant returns to the outdoor coil and evaporates once again to absorb more heat SUMMER COOLING 1 In...

Страница 3: ...eat Some thermostats will include a system switch position termed EM HT or AUX HT etc This is a back up heating mode to be used only if there is a suspected problem With the system switch set to EM HT...

Страница 4: ...containedintheseinstructions All electrical wiring must be made in accordance with local codes and regulations and with the National Electric Code ANSI NFPA 70 or in Canada the Canadian Electric Code...

Страница 5: ...35 3 X30 455 28 0 25 5 39 0 35 3 X36 460 28 0 25 5 39 0 35 3 X42 565 29 5 26 0 43 0 39 3 X48 570 29 5 26 0 43 0 39 3 X60 580 29 5 26 0 43 0 39 3 Model Number Q4SD PPH1SD Unit Weight Center of Gravity...

Страница 6: ...rdance with the standards of the National Fire Protection Association Standard for Installation of Air Conditioning Systems NFPA 90A StandardforInstallationofResidenceType WarmAirHeatingandAirConditio...

Страница 7: ...er nominal ton of cooling capacity Duct work should be attached directly to the unit flanges for horizontal applications On roof curb installations the ducts must be attached to the curb hangers not t...

Страница 8: ...themotorwill gradually change speeds during start up shut down whenthermostatinputschange andwhen theductstaticpressurechanges ventsclosedor opened filter clogging etc The packaged heat pump unit is c...

Страница 9: ...A also provides a 60 second off delay at 50 airflow DelayB hasasinglestep30second on delayat 50 airflow Delay B also provides a 90 second off delay at 50 airflow Select the delay profile which is most...

Страница 10: ...e wire entrance in the packaged heat pump unit and remove jumper connector between B1 and B2 wire switch to close on temperature rise Set the thermostat as desired near 105 F CAUTION To avoid personal...

Страница 11: ...is sized properly Verifythatthethermostatiswiredcorrectly The thermostat function switch should be set to Off and the thermostat fan switch should be set to Auto Start Up Procedure Close all electrica...

Страница 12: ...Note The delay no delay pin concerns compressoroperationduringdefrosts Thedefault setting is delay Reciprocating compressors should only use this setting in conjunction with an approved hard start kit...

Страница 13: ...ake it necessary for evacuation and charging it should only be done by qualified trained personnel thoroughly familiarwiththisequipment Somelocal codes require licensed installation service personnel...

Страница 14: ...stat E O G R Y1 INDOOR THERMOSTAT SUB BASE Green Y2 W2 C DEFROST BOARD 1 2 3 4 5 6 7 8 9 Brown Orange Accessory Heat Plug Optional Outdoor Thermostat Field Supplied O E O G R Y1 INDOOR THERMOSTAT SUB...

Страница 15: ...2 67 25 7 21 2 2 95 24 5 20 6 3 26 1100 80 62 28 6 29 1 2 42 27 4 27 7 2 68 26 3 26 6 2 96 25 3 25 3 3 26 80 67 30 9 24 9 2 43 29 5 24 2 2 69 28 2 23 6 2 97 26 9 23 0 3 27 80 72 33 4 20 1 2 43 31 9 19...

Страница 16: ...0 5 4 12 40 2 29 6 4 58 38 2 28 7 5 13 1400 80 62 44 4 40 6 3 72 42 6 40 1 4 13 40 7 39 3 4 60 38 8 38 3 5 14 80 67 48 0 34 0 3 78 46 0 33 1 4 19 43 9 32 3 4 66 41 7 31 2 5 21 80 72 51 6 27 0 3 84 49...

Страница 17: ...0 24 3 1 58 4 52 29 6 1 90 4 57 31 9 2 03 4 59 39 4 2 48 4 67 46 9 2 90 4 74 52 2 3 20 4 79 54 5 3 32 4 81 62 0 3 72 4 89 Q4SD X60K OUTDOOR TEMPERATURE Deg F Indoor T 10 17 20 30 40 47 50 60 CFM Deg F...

Страница 18: ...1 80 24 3 1 58 4 52 29 6 1 90 4 57 31 9 2 03 4 59 39 4 2 48 4 67 46 9 2 90 4 74 52 2 3 20 4 79 54 5 3 32 4 81 62 0 3 72 4 89 Q4SD X60K OUTDOOR TEMPERATURE Deg F Indoor T 10 17 20 30 40 47 50 60 CFM De...

Страница 19: ...1 80 24 3 1 58 4 52 29 6 1 90 4 57 31 9 2 03 4 59 39 4 2 48 4 67 46 9 2 90 4 74 52 2 3 20 4 79 54 5 3 32 4 81 62 0 3 72 4 89 Q4SD X60K OUTDOOR TEMPERATURE Deg F Indoor T 10 17 20 30 40 47 50 60 CFM De...

Страница 20: ...s 7084390 Specifications and illustrations subject to change without notice and without incurring obligations Printed in U S A 08 08 708439I INSTALLER PLEASE LEAVE THESE INSTALLATION INSTRUCTIONS WITH...

Отзывы: