Allied Air 4SCU16LT Series Installation And Maintenance Instructions Manual Download Page 6

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Page 6

Issue 0912 506253-01

Figure 6

Refrigerant Line Sets: Transition from Vertical to Horizontal

Anchored

Heavy Nylon

Wire Tie

Wall

Stud

Metal Sleeve

Vapor Line

Wrapped

in Armaflex

–

Liquid Line

Wall

Stud

Automotive

Muffler-Type

Hanger

Strap Liquid
Line to Vapor
Line

Metal Sleeve

Vapor Line

Wrapped

in Armaflex

–

Liquid Line

Strap Liquid
Line to Vapor
Line

Figure 7

Refrigerant Line Sets: Installing Vertical Runs (new construction shown)

Outside Wall

Wood Block

Between Studs

IMPORTANT: Refrigerant
lines must not contact wall.

Vapor Line

Liquid Line

Wire Tie

Inside Wall

Strap

Sleeve

Wire Tie

Strap

Wood Block

Sleeve

Vapor Line Wrapped

with Armaflex

Liquid Line

Caulk

PVC Pipe

Fiberglass
Insulation

Outside Wall

IMPORTANT:

Refrigerant

lines must not

contact structure.

NOTE: Similar installation practices
should be used if line set is to be
installed on exterior of outside wall.

Summary of Contents for 4SCU16LT Series

Page 1: ...ctrical shock Disconnect all remote power supplies before installing or servicing any portion of the system Failure to disconnect power supplies can result in property damage personal injury or death WARNING The equipment covered in this manual is to be installed by trained and experienced service and installation technicians Improper installation modification service or use can cause electrical s...

Page 2: ...ansion valve must be ordered sepa rately from the manufacturer A filter drier approved for use with 410A is installed in the unit IMPORTANT This product has been designed and manu factured to meet ENERGY STAR criteria for energy effi ciency when matched with appropriate coil components However proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency Insta...

Page 3: ...to maintain separation of field installed low and high voltage circuits Refrigerant Piping Figure 2 Slab Mounting Discharge Air Mounting Slab Ground Level Building Structure Thermostat Designations Figure 3 See unit wiring diagram for power supply connections If the indoor unit is not equipped with a blower relay one must be field supplied and installed Do not connect C common connection between i...

Page 4: ... of sound transmission Figure 4 shows how to place the outdoor unit and line set to reduce line set vibration Line Set Isolation Illustrations on the following pages demonstrate procedures which ensure proper refrigerant line set isolation Figure 5 shows how to install line sets on horizontal runs On page 6 Figure 6 shows how to make a transition from horizontal to vertical and Figure 7 shows how ...

Page 5: ...ench the joints with water or a wet cloth to prevent heat damage to the valve core and opening port The tube end must stay bottomed in the fitting during final assembly to ensure proper seating sealing and rigidity 7 Install a thermal expansion valve which is sold separately and which is approved for use with R410A refrigerant in the liquid line at the indoor coil see Refrigerant Metering Device o...

Page 6: ...e to Vapor Line Figure 7 Refrigerant Line Sets Installing Vertical Runs new construction shown Outside Wall Wood Block Between Studs IMPORTANT Refrigerant lines must not contact wall Vapor Line Liquid Line Wire Tie Inside Wall Strap Sleeve Wire Tie Wire Tie Strap Wood Block Sleeve Vapor Line Wrapped with Armaflex Liquid Line Caulk PVC Pipe Fiberglass Insulation Outside Wall IMPORTANT Refrigerant l...

Page 7: ...ompletely void of refrigerant Disconnect the liquid and suction lines from the existing outdoor unit If the existing outdoor unit is equipped with manual shutoff valves AND new R22 refrigerant will be used to flush the system Start the existing R22 refrigerant system in cooling mode and close the liquid line valve Pump all the existing R22 refrigerant back into the outdoor unit Required Equipment ...

Page 8: ...acuum on the system NOTE A single system flush should remove all of the mineral oil from the existing refrigerant lines and indoor coil A second flushing may be done using clean refrigerant if insufficient amounts of mineral oil were removed during the first flush After each system flush allow the recovery machine to pull a vacuum on the system at the end of the procedure 9 Close the valve on the ...

Page 9: ... psi Gauge hoses must be rated for use at up to 800 psi of pressure with a 4000 psi burst rating Liquid and Suction Line Service Valves The liquid line and suction line service valves and service ports are used for leak testing evacuating charging and checking charge Each valve is equipped with a service port which has a factory installed Schrader valve see Figure 10 A service port cap protects th...

Page 10: ...unit Noncondensables are defined as any gas that will not condense under temperatures and pressures present during operation of an air conditioning system Noncondensables and water vapor combine with refrigerant to produce substances that corrode copper piping and compressor parts Using an Electronic Leak Detector 1 Connect the high pressure hose of the manifold gauge set to the suction valve serv...

Page 11: ...enter port hose from the vacuum pump Attach the manifold gauge center port hose to a nitrogen cylinder with pressure regulator set to 150 psig and purge the hose Open the manifold gauge valves to break the vacuum in the line set and indoor unit Close the manifold gauge valves 7 Shut off the nitrogen cylinder and remove the manifold gauge hose from the cylinder Open the manifold gauge valves to rel...

Page 12: ...hin the range listed on the unit nameplate If not do not start equipment until the power company has been consulted and the voltage condition corrected 6 Set thermostat for cooling demand turn on power to indoor blower and close the outdoor unit disconnect switch to start the unit 7 Recheck unit voltage with unit running Power must be within range shown on unit nameplate Refrigerant Charging This ...

Page 13: ...se a digital ther mometer to record the liquid line temperature 2 At the same time record the liquid line pressure reading 3 Use the temperature pressure chart Table 5 on page 14 to determine the saturation temperature for the liquid line pressure reading 4 Subtract the liquid line temperature from the satura tion temperature according to the chart to determine subcooling _____ Saturation Temperat...

Page 14: ... F e r u s s e r P g i s P 4 7 0 4 1 2 5 7 4 7 1 2 6 7 9 0 2 2 7 7 4 4 2 2 8 7 0 8 2 2 9 7 6 1 3 2 0 8 3 5 3 2 1 8 0 9 3 2 2 8 7 2 4 2 3 8 5 6 4 2 4 8 3 0 5 2 5 8 1 4 5 2 6 8 0 8 5 2 7 8 0 2 6 2 8 8 0 6 6 2 9 8 0 0 7 2 0 9 1 4 7 2 1 9 2 8 7 2 2 9 3 2 8 2 3 9 5 6 8 2 4 9 8 0 9 2 5 9 1 5 9 2 6 9 4 9 9 2 7 9 8 3 0 3 8 9 2 8 0 3 9 9 7 2 1 3 0 0 1 2 7 1 3 1 0 1 8 1 2 3 2 0 1 4 6 2 3 3 0 1 0 1 3 3 4 0 1...

Page 15: ...3 8 2 8 3 1 8 7 2 5 3 1 1 8 2 4 3 1 1 9 2 7 2 1 F 5 8 6 2 3 1 4 1 4 2 3 7 3 1 5 2 3 7 3 1 4 3 3 0 3 1 F 5 9 6 7 3 2 4 1 4 7 3 9 3 1 6 8 3 9 3 1 3 8 3 3 3 1 F 5 0 1 8 2 4 4 4 1 9 2 4 2 4 1 8 2 4 1 4 1 4 3 4 6 3 1 F 5 1 1 6 8 4 6 4 1 0 0 5 4 4 1 5 8 4 4 4 1 9 8 4 9 3 1 2 d n y t i c a p a C h g i H e g a t S F 5 6 9 4 2 6 2 1 1 5 2 9 2 1 9 4 2 3 2 1 3 4 2 7 1 1 F 5 7 8 8 2 3 3 1 1 9 2 5 3 1 6 8 2 9 ...

Page 16: ...low ALERT LED will flash a number of times consecutively pause and then repeat the process To identify a flash code number count the number of consecu tive flashes Refer to Table 9 on page 17 and Table 10 on page 18 for information on the flash codes Every time the module powers up the last ALERT LED flash code that occurred prior to shutdown is displayed for 60 seconds The module will continue to...

Page 17: ... e r p n o i t c u s w o l r o f k c e h C g n i t t e s t a t s o m r e h t w o l y l e v i s s e c x e r o f k c e h C r e t l i f r i a n r u t e r r o s e g a k c o l b l i o c w o l f r i a r o t a r o p a v e k c e h C e g a k c o l b r o f s r e t s i g e r r o k r o w t c u d k c e h C e c i v e d g n i r e t e m y t l u a F 4 t c a t n o c d n a n o i t a c o l e z i s n o i t a l l a t s...

Page 18: ... s e r p h g i H 4 s n o i t c e n n o c r o g n i r i w y l p p u s r o s s e r p m o c n i t i u c r i c n e p O 5 e r u t a r e p m e t t n e i b m a e m e r t x e o t e u d e m i t t e s e r r o t c e t o r p r o s s e r p m o c g n o l y l l a u s u n U 6 d e g a m a d e r a s g n i d n i w r o s s e r p m o C 7 e c n a t s i s e r g n i d n i w r o t o m r o s s e r p m o c k c e h C T R E L...

Page 19: ...a l p s i d r o t c a t n o c t a e g a t l o v y f i r e V l i o c r o t c a t n o c t a C A V 4 2 o t d e t c e n n o c s i l a n i m r e t Y y f i r e V f f o n e h w C A V 5 0 w o l e b s l l a f l i o c 7 r o 6 5 e d o C h s a l F T R E L A t r a t S n e p O t i u c r i C n e p O t i u c r i C n u R n e p O r o t i u c r i C y l t c e r r o c n i d e y a l p s i d g n i s n e s t n e r r u c ...

Page 20: ...connections 5 Check for correct voltage at unit with unit operating 6 Check amp draw outdoor fan motor Unit nameplate _________ Actual _________ NOTE If owner complains of insufficient cooling the unit should be gauged and refrigerant charge checked Refer to the Refrigerant Charging section on page 12 Indoor Coil 1 Clean coil if necessary 2 Check connecting lines and coils for evidence of oil leak...

Page 21: ...oltage ______________ Rated Load Ampacity ________ Compressor _______________ Outdoor Fan ___________________ Maximum Fuse or Circuit Breaker________________________ Electrical Connections Tight Indoor Filter Clean Supply Voltage Unit Off ________________ Indoor Blower RPM _____________ S P Drop Over Indoor Dry ____________ Outdoor Coil Entering Air Temperature _____________ Voltage with Compresso...

Page 22: ...1 R Y2 LT BLUE RED R Y2 BLUE RED YELLOW A132 TO 24 VAC POWER SOURCE 20 VA MINIMUM NEC CLASS 2 DESCRIPTION KEY COMPONENT A4 CONTROL TIMED OFF B1 COMPRESSOR B4 MOTOR OUTDOOR FAN C12 CAPACITOR DUAL HR1 HEATER COMPRESSOR K1 1 CONTACTOR COMPRESSOR S4 SWITCH HIGH PRESSURE S24 SWITCH LOSS OF CHARGE FOR USE WITH COPPER CONDUCTORS ONLY REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AMPACITY AND MAXIMUM OVE...

Page 23: ...llation date and location c an accurate description of the problem WARRANTY LIMITATIONS 1 This warranty is void if the covered equipment is removed from the original installation site 2 This warranty does not cover damage or defect resulting from a flood wind fire lightning mold or installation and operation in a corrosive atmosphere or otherwise in contact with corrosive materials chorine fluorin...

Page 24: ...ghtening strike to the home or unit corrosive atmosphere contact with corrosive material Chlorine fluorine salt recycled waste water fertilizers or other damaging substances or other conditions beyond the control of Allied 2 Use of parts accessories or refrigerant not compatible with the unit 3 Modification change or alteration of the unit except as expressly directed in writing by Allied 4 Improp...

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