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General Information

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RT-SVX38B-EN

manual reset required to restart the compressor. On dual
compressor units only the affected compressor circuit is
locked out.

High Pressure Control

ReliaTel Control

The high pressure controls are wired in series between the

compressor outputs on the RTRM and the compressor
contactor coils. If the high pressure control switch opens,
the RTRM senses a lack of current while calling for cooling
and locks the compressor out.

If four consecutive open conditions occur during an active
call for cooling, the compressor will be locked out, a
diagnostic communicated to ICS™, if applicable, and a
manual reset required to restart the compressor. On dual
compressor units only the affected compressor circuit is
locked out.

Lead/Lag Control (Dual Circuit Only)

ReliaTel Control Only

Lead/Lag is a selectable input located on the RTRM. The
RTRM is configured from the factory with the Lead/Lag
control disabled.To activate the Lead/Lag function, simply
cut the wire connected to J3-8 at the RTRM. When it is
activated, each time the designated lead compressor is
shut off due to the load being satisfied, the lead
compressor or refrigeration circuit switches. When the
RTRM is powered up, i.e. after a power failure, the control
will default to the number one circuit compressor.

Zone Sensor Module (ZSM) (BAYSENS106*)

This electronic sensor features three system switch

settings (Heat, Cool, and Off) and two fan settings (On and

Auto). It is a manual changeover control with single

setpoint. (Cooling Setpoint Only)

Zone Sensor Module (ZSM) (BAYSENS108*)

This electronic sensor features four system switch settings

(Heat, Cool, Auto, and Off) and two fan settings (On and

Auto). It is a manual or auto changeover control with dual

setpoint capability. It can be used with a remote zone
temperature sensor BAYSENS077*.

Zone Sensor (BAYSENS110*)

This electronic sensor features four system switch settings

(Heat, Cool, Auto, and Off) and two fan settings (On and

Auto) with four system status LED’s. It is a manual or auto

changeover control with dual setpoint capability. It can be
used with a remote zone temperature sensor
BAYSENS077*.

Programmable Zone Sensor - (BAYSENS119*)

This 7 day programmable sensor features 2, 3 or 4 periods

for Occupied or Unoccupied programming per day. If the
power is interrupted, the program is retained in
permanent memory. If power is off for an extended period
of time, only the clock and day may have to be reset.

The Zone Sensor allows selection of 2, 3 or 4 system

modes (Heat, Cool, Auto, and Off), two fan modes (On and

Auto). It has dual temperature selection with

programmable start time capability.

The occupied cooling set point ranges between 45 and 98

º F. The heating set point ranges between 43 and 96ºF.

A liquid crystal display (LCD) displays zone temperature,

temperature set points, day of the week, time, and
operational mode symbols.

The Option Menu is used to enable or disable applicable

functions, i.e.; Morning Warm-up, Economizer minimum
position override during unoccupied status, Fahrenheit or
Centigrade, Supply air tempering, Remote zone
temperature sensor, 12/24 hour time display, Smart fan,
and Computed recovery.

During an occupied period, an auxiliary relay rated for 1.25
amps @ 30 volts AC with one set of single pole double
throw contacts is activated.

Status Inputs (4 Wires Optional)

The ZSM can be wired to receive four (4) operating status

signals from the RTRM (HEAT, COOL, SYSTEM “ON”,
SERVICE).

Four (4) wires from the RTRM should be connected to the
appropriate terminals (7, 8, 9 & 10) on the ZSM.

Remote Zone Sensor (BAYSENS073*)

This electronic sensor features remote zone sensing and

timed override with override cancellation. It is used with a

Trane Integrated Comfort™ building management

system.

Remote Zone Sensor (BAYSENS074*)

This electronic sensor features single setpoint capability

and timed override with override cancellation. It is used
with a Trane Integrated Comfort™ building management
system.

Remote Zone Sensor (BAYSENS016*)

This bullet type temperature sensor can be used for

outside air (ambient) sensing, return air temperature
sensing, supply air temperature sensing, remote
temperature sensing (uncovered).Wiring procedures vary
according to the particular application and equipment
involved. Refer to the unit’s wiring diagrams for proper
connections.

Remote Zone Sensor (BAYSENS077*)

This electronic sensor can be used with BAYSENS106*,

108*, 110*, 119* Remote Panels. When this sensor is wired
to a BAYSENS119* Remote Panel, wiring must be 18 AWG
ShieldedTwisted Pair (Belden 8760 or equivalent). Refer to
the specific Remote Panel for wiring details.

Wireless Zone Sensor (BAYSENS050)

This electronic sensor features five system settings (Auto,

Off, Cool, Heat, and Emergency Heat) and with On and

Summary of Contents for YSC060ED

Page 1: ...ning Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on...

Page 2: ...sponsible management of refrigerants Know the applicable laws and follow them Revision Summary RT SVX38B EN 10 September 2012 MERV 8 filter with filter removal tool Stainless steel drain pan condensat...

Page 3: ...29 Voltage Imbalance 29 Electrical Phasing Three Phase Motors 29 Test Modes 31 Unit Start Up 32 Verifying Proper Air Flow 32 Economizer Start Up 32 Compressor Start Up 33 Final System Setup 33 Mainte...

Page 4: ...ed Condenser Coil25 3 Black Epoxy Pre Coated Condenser Coil with Hail Guard25 4 CompleteCoat Condenser Coil 5 CompleteCoat Condenser Coil with Hail Guard Digit 18 Through the Base Provisions 0 NoThrou...

Page 5: ...ntrols 15 This option is used when ordering Novar Controls 16 Includes gas piping and shutoff field assembly required 17 Not available with high temperature duct sensor accessory 18 Digit 15 2 19 Nova...

Page 6: ...ertinent unit data Compressor Nameplate The nameplate for the compressors are located on the side of the compressor Unit Description Before shipment each unit is leak tested dehydrated charged with re...

Page 7: ...is sent to the remote panel if the pressure differential across the filters is at least 0 5 w c The contacts will automatically open when the pressure differential across the filters decreases to appr...

Page 8: ...ming per day If the power is interrupted the program is retained in permanent memory If power is off for an extended period of time only the clock and day may have to be reset The Zone Sensor allows s...

Page 9: ...orporates the Frostat control FOS mounted in the indoor coil circuit and can be activated by closing a field supplied contact installed in parallel with the FOS If this circuit is open before the comp...

Page 10: ...stances necessary to assure adequate serviceability cataloged unit capacity and peak operating efficiency Providing less than the recommended clearances may result in condenser coil starvation short c...

Page 11: ...ons standard efficiency Notes 1 All dimensions are in inches millimeters 2 NPT Gas Connection Figure 3 5 tons standard efficiency roof curb Note All dimensions are in inches millimeters 7 44 44 MM MM...

Page 12: ...38B EN Figure 4 5 tons standard efficiency unit clearance and roof opening Note All dimensions are in inches millimeters CLEARANCE 36 914 MM Figure 5 6 7 tons standard efficiency Note All dimensions a...

Page 13: ...13 Figure 6 6 7 tons standard efficiency roof curb Note All dimensions are in inches millimeters 2130 MM 356 MM Figure 7 6 7 tons standard efficiency unit clearance and roof opening Note All dimensio...

Page 14: ...38B EN Figure 8 8 10 tons standard efficiency Note All dimensions are in inches millimeters 1 2 NPT GAS CONNECTION Figure 9 8 10 tons standard efficiency roof curb Note All dimensions are in inches mi...

Page 15: ...Unit Dimensions RT SVX38B EN 15 Figure 10 8 10 tons standard efficiency unit clearance and roof opening Note All dimensions are in inches millimeters...

Page 16: ...to the state of California to cause cancer through inhalation Glass wool fibers may also cause respiratory skin or eye irritation WARNING Heavy Objects Ensure that all the lifting equipment used is p...

Page 17: ...Width 5 YSC060E 689 312 584 264 181 82 144 65 122 55 137 62 40 1025 24 600 6 YSC072E 975 443 843 383 296 134 209 95 158 72 180 82 39 980 21 542 7 YSC090E 1016 461 884 401 346 157 198 90 159 72 181 82...

Page 18: ...ld be weather proofed after installation is completed Roof Curb Downflow The roof curbs for these units consists of a full perimeter enclosure to support the unit just inside of the unit base rail Bef...

Page 19: ...drill screws fastening wood protection to metal base rail Remove all screws securing wooden protection to wooden top crate On 7 10 ton high efficiency units remove wire ties from outdoor grill 2 Remo...

Page 20: ...h is attached to the combustion blower motor if horizontal discharge configuration is used Note The following units require a limit switch change out for horizontal discharge The additional limit swit...

Page 21: ...lling screws or screws removed from duct cover screw through dimples to attach DUCT COVER to base 4 On original RETURN DUCT COVER apply 6mm continuous bead of 500 F RTV sealant around flange opposite...

Page 22: ...provided on each unit Refer to Figure 13 p 18 and Figure 14 p 18 for the appropriate drain location The condensate drain pan is factory installed to drain condensate to the back side of the unit See...

Page 23: ...the field installed wiring entrance into the unit is illustrated in Unit Dimensions p 10 To insure that the unit s supply power wiring is properly sized and installed follow the following guidelines...

Page 24: ...t failure due to insufficient AC voltage supply Note Be sure to check all loads and conductors for grounds shorts and mis wiring 3 Do not run the AC low voltage wiring in the same conduit with the hig...

Page 25: ...g a number of remote sensors in a series parallel circuit Using the BAYSENS016 or BAYSENS077 at least four sensors are required to accomplish space temperature averaging See diagram below Table 5 Zone...

Page 26: ...of remote sensors is required Example 2 illustrates three sensors squared in a series parallel circuit Using BAYSENS077 two sensors are required to accomplish space temperature averaging Example 3 il...

Page 27: ...38B EN 27 Figure 29 Typical field wiring diagrams for optional controls ReliaTel only BAYSENS075 BAYSENS075 BAYSENS119 BAYSENS110 BAYSENS108 BAYSENS106 BAYSENS073 BAYSENS074 BAYSENS075 ASYSTAT669A OPT...

Page 28: ...al gas pipe mains and branches Iron Pipe Size IPS Inches Length of Pipe Ft Pipe Pipe 1 Pipe 1 Pipe 1 Pipe 15 76 176 345 750 1220 30 52 120 241 535 850 45 43 99 199 435 700 60 38 86 173 380 610 75 77 1...

Page 29: ...rrent imbalance with a resulting increase in motor winding temperatures that will decrease motor life If the voltage imbalance is over 2 notify the proper agencies to correct the voltage problem befor...

Page 30: ...switch and the unit mounted disconnect switch if applicable Note Upon closing main power disconnect and the unit mounted disconnect switch or circuit breaker the phase monitor will verify proper phasi...

Page 31: ...forms self diagnostic checks to insure that all internal controls are functional It also checks the configuration parameters against the components connected to the system The System LED located on th...

Page 32: ...p procedure Economizer Start Up ReliaTel Control Using the ServiceTest Guide in Table 6 p 30 momentarily jump across theTest 1 Test 2 terminals on LTB1 one time to start the Minimum VentilationTest 1...

Page 33: ...n the heating mode Momentarily jump across theTest 1 Test 2 terminals on LTB1 one additional time if continuing from previous component start up or until the desired start up componentTest is started...

Page 34: ...side the range readjust the belt tension Note Actual belt deflection force must not exceed the maximum force value shown in Table 10 7 Recheck the belt tension at least twice during the first 2 to 3 d...

Page 35: ...or replace them Check supply fan motor bearings repair or replace the motor as necessary Inspect both the main unit control panel and heat section control box for loose electrical components and termi...

Page 36: ...l all of the components and panels removed in Step 1 and any protective covers installed in Step 2 Note For units equipped with hail guards follow reinstallation procedure listed below Hail Guard Rein...

Page 37: ...ant Circuit 2 Date Current Ambient Temp F C Compr Oil Level Suct Press Psig kPa Disch Press Psig kPa Liquid Press Psig kPa Super heat F C Sub cool F C Compr Oil Level Suct Press Psig kPa Disch Press P...

Page 38: ...ce of operations for each mode to assist in verifying proper operation Make the necessary repairs and proceed to Steps 7 and 8 7 If no abnormal operating conditions appear in the test mode exit the te...

Page 39: ...tem Failure Measure the voltage between terminals J6 9 J6 6 Normal Operation approximately 32 VDC System Failure less than 1 VDC approximately 0 75 VDC Test Mode voltage alternates between 32VDC 0 75...

Page 40: ...the fan proving switch is closed indicating a fan failure and it will shut the unit operations down Condensate Overflow Switch When the Condensate Overflow Switch is closed a drain pan overflow condi...

Page 41: ...nd runs continuously the ZSM is good If you are not able to turn the fan on the ZSM is defective ReliaTel Refrigeration Module RTRM Default Chart If the RTCI loses input from the building management s...

Page 42: ...1 or CC2 24 VAC control circuit has opened check CC1 CC2 coils and any of the controls below that apply to the unit HPC1 HPC2 LPC1 LPC2 Frostat Resetting Cooling and Ignition Lockouts Cooling Failures...

Page 43: ...chnical support Table 13 Unit wiring diagram numbers Schematic Type Schematic Type Schematic Type Description Control 4366 1012 0110 Power 4366 1005 0104 Connection Diagram 4366 1543 0110 060E 4366 10...

Page 44: ...IMPLIED IN LAW OR IN FACT INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR USE AND IN NO EVENT SHALLWARRANTOR BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES Some state...

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Page 48: ...dvanced controls and HVAC systems comprehensive building services and parts For more information visit www IRCO com The manufacturer has a policy of continuous product and product data improvement and...

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