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10

SS-SVN11A-EN

Clearances

Provide enough space around the unit 
to allow unrestricted access to all ser-
vice points. Refer to Figure 1 through 
Figure 4 for unit dimensions and mini-
mum required service and free air 
clearances. Observe the following 
points to insure proper unit operation.

A. Do not install the unit under a low 
overhang. Condenser discharge must 
not be restricted. See Notes in Figure 
1 through Figure 4.

NOTICE:

 Do not obstruct condenser 

discharge air. This can result in warm 
air recirculation through the coil.

B. Do not locate the unit in a position 
where runoff water can fall into the 
fan discharge openings.

C. Condenser intake air is supplied 
from three sides of the unit. Adhere to 
the minimum required clearances 
given in Figure 1 through Figure 4.

Unit Mounting

Rooftop Mounting:

 If the unit will be 

roof mounted, determine for certain 
that the structure is strong enough to 
support the unit and any required 
accessories. Unit weights are given in 
Table 2. The unit should be elevated 
on a level, field fabricated four-inch 
steel or wood 4" x 4" mounting frame. 
Complete the frame and secure it into 
position before lifting the unit to the 
roof. The mounting frame must sup-
port a minimum of three of the unit’s 
four sides and should span roof sup-
ports to distribute the load on the 
roof.

Figure 5 Roof Mounted Unit

WARNING

 

STRUCTURAL FAILURE!
Ensure that the roof structure 
supports are strong enough to 
support the weight of the unit 
and any accessories. Failure to do 
this could result in death or seri-
ous injury due to structural fail-
ure and can seriously damage the 
unit and the building.

Ground Level Mounting

“For ground level installation, the unit 
base should be adequately supported 
and hold the unit near level. The 
installation must meet the guidelines 
set forth in local codes.” The support 
should extend two inches beyond the 
unit base channels at all points. The 
unit and support must be isolated 
from any adjacent structure to prevent 
possible noise or vibration problems. 
Any ground level location must com-
ply with required clearances given in 
Figure 1 through Figure 4.

Holes must be made in the structure 
to run refrigerant lines. For the major-
ity of ground-level installations, the 
holes can be made in the header that 
rests on top of the foundation. Alter-
natively, these holes may also be 
made in the foundation itself. On roof-
mounted units, refrigerant lines 
should enter the building as close to 
the unit as possible; preferably within 
three to four inches of the refrigerant 
connection on the unit, plus a six-inch 
(long radius) 90 degree "L" entering 
the building (See Figure 5).

Refrigerant Piping Guidelines

A. Maximum recommended line 
lengths: (per circuit)
Maximum linear length..............200 Ft.
(w/o accumulator)
Maximum discharge line lift......200 Ft.
Maximum liquid line lift..............60 Ft.

B. Maximum allowable pressure 
drops (R-410a):
Discharge line...............................10 psi
Liquid line (without subcooler)...50 psi

Route refrigerant piping for minimum 
linear length, minimum number of 
bends and fittings (no reducers) and
minimum amount of line exposed to 
outdoor ambients.

C. Recommended line sizes:

    CTA090, 120A (single circuit) 

CTA120B, 180B (dual circuit) 

Discharge line - 7/8 inch sealed type L 

refrigerant tubing.
Liquid line - 1/2 inch sealed type L 
refrigerant tubing.

Installation

Содержание 090A***A - 60 HZ

Страница 1: ...SS SVN11A EN Models A and later Design Sequence Installation Owner Diagnostics Split System Cooling Condensers Model CTA 7 1 2 to 15 Tons CTA 090A A 60 HZ 120A A 60 HZ 120B A 60 HZ 180B A 60 HZ...

Страница 2: ...eri enced HVAC technicians to properly diagnose and repair this equipment NOTICE Warnings and Cautions appear at appropriate sections throughout this manual Read these carefully WARNING Indicates a po...

Страница 3: ...nit Inspection 9 Initial Leak Test 9 Lifting Recommendations 9 Clearances 10 Unit Mounting 10 Refrigerant Piping 10 Leak Check 12 System Evacuation 12 Refrigeration Charging 12 Electrical Wiring 13 Lo...

Страница 4: ...ial number and DL number if applica ble stamped on the unit nameplate Digits 1 2 3 Product Type CTA Remote Air Cooled Condenser Digits 4 5 6 Nominal Gross Cooling Capacity MBh 090 090 MBh used with 3...

Страница 5: ...SS SVN11A EN 5 Figure 1 CTA090A Figure 2 CTA120A Unit Dimensions...

Страница 6: ...6 SS SVN11A EN Figure 3 CTA120B Unit Dimensions...

Страница 7: ...SS SVN11A EN 7 Figure 4 CTA180B Unit Dimensions...

Страница 8: ...6 15 15 1 1 2 1 6 3 7 CTA090A8 575 60 1 518 632 15 15 1 1 2 1 2 3 0 CTA120A1 208 230 60 1 187 254 15 15 1 1 6 0 17 0 CTA120A2 460 60 1 414 506 15 15 1 1 2 7 7 0 CTA120A8 575 60 1 518 632 15 15 1 1 2 0...

Страница 9: ...5 days If concealed dam age is discovered stop unpacking the shipment Do not remove dam aged material from the receiving location Take photos of the dam age if possible The owner must provide reasonab...

Страница 10: ...y due to structural fail ure and can seriously damage the unit and the building Ground Level Mounting For ground level installation the unit base should be adequately supported and hold the unit near...

Страница 11: ...lt in serious injury CAUTION Equipment Damage Do not remove the seal caps from refrigerant connections until pre pared to braze refrigerant lines to the connections Excessive expo sure to atmosphere m...

Страница 12: ...ines leading to a sealed sys tem can be accomplished with manifold center hose and connecting branch hose to cylinder of R 410a and vacuum pump 3 Attach center hose of manifold gauges to the vacuum pu...

Страница 13: ...is operating properly 5 Disconnect all power to the unit WARNING HAZARDOUS VOLTAGE w CAPACITORS Disconnect all power including remote disconnects and dis charge all capacitors before ser vicing Follo...

Страница 14: ...ire 24 volts D 2 control wires 24 volts CTA180B S C I RH120 CTA180B S C I RH150 Field Wiring A 2 power wires Line voltage for single phase B 3 power wires Line voltage for 3 phase C Cooling only therm...

Страница 15: ...SS SVN11A EN 15 Field Wiring...

Страница 16: ...16 SS SVN11A EN Wiring...

Страница 17: ...SS SVN11A EN 17 Wiring...

Страница 18: ...18 SS SVN11A EN Wiring...

Страница 19: ...SS SVN11A EN 19 Wiring...

Страница 20: ...20 SS SVN11A EN Refrigeration Diagram Figure 11 Typical Split System Cooling Diagram...

Страница 21: ...rformed initial leak test Connected properly sized and con structed liquid and discharge lines to the connection stubs at both the indoor and outdoor units Insulated the entire discharge line Insulate...

Страница 22: ...ON AUTO switch on the room ther mostat With the switch positioned at AUTO and the system operating in the cooling mode fan operation coin cides with the cooling run cycles If the system is equipped w...

Страница 23: ...ct power before servic ing could result in death or seri ous injury 1 Inspect air filters and clean if neces sary 2 Check unit wiring to ensure all con nections are tight and that the wir ing insulati...

Страница 24: ...each inspection once per month during cooling season while unit is operating Date Ambient Temp F Evaporator Entering Air Compressor Superheat Subcooling Dry Bulb Wet Bulb Suction Pressure Discharge P...

Страница 25: ...exceed 18 months from shipment Extended Warranty The optional extended warranty is a second through fifth year warranty The time starts at the end of standard 1 year coverage through the fifth year T...

Страница 26: ...gn and specifications without notice Literature Order Number SS SVN11A EN File Number SV UN SS SVN11A 1004 Supersedes New Stocking Location Inland Trane A Business of American Standard Companies www t...

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