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RT-SVX26R-EN

19 

Installation

Foundation

Horizontal Units

Notes:

For units with optional Condensate Overflow Switch 
(COF), the switch will not work properly if unit is not 
level or slightly sloped toward switch.

To assure proper condensate flow during operation the 
unit and the curb must be level.

If the unit is installed at ground level, elevate it above the 
snow line. Provide concrete footings at each support 
location with a “full perimeter” support structure or a slab 
foundation for support. Refer to 

Table 1, p. 17

 and 

Table 2, 

p. 17

 for the unit’s operating and point loading weights 

when constructing a footing foundation.

If anchoring is required, anchor the unit to the slab using 
hold down bolts or isolators. Isolators should be installed 
to minimize the transmission of vibrations into the 
building.

For rooftop applications, if anchoring is required, anchor 
the unit to the roof with hold-down bolts or isolators.

Check with a roofing contractor for proper waterproofing 
procedures.

Ductwork

Elbows with turning vanes or splitters are recommended 
to minimize air noise due to turbulence and to reduce static 
pressure.

When attaching the ductwork to the unit, provide a water- 
tight flexible connector at the unit to prevent operating 
sounds from transmitting through the ductwork.

All outdoor ductwork between the unit and the structure 
should be weather proofed after installation is completed.

Note:

For sound consideration, cut only the holes in the 
roof deck for the ductwork penetrations. Do not cut 
out the entire roof deck within the curb perimeter.

If a Curb Accessory Kit is not used:

a. The ductwork can be attached directly to the 

factory-provided flanges around the unit’s supply 
and return air openings. Be sure to use flexible duct 
connections at the unit.

b. For “built-up” curbs supplied by others, gaskets 

must be installed around the curb perimeter flange 
and the supply and return air opening flanges.

General Unit Requirements

The checklist listed below is a summary of the steps 
required to successfully install a commercial unit. This 
checklist is intended to acquaint the installing personnel 
with what is required in the installation process. It does not 
replace the detailed instructions called out in the 
applicable sections of this manual.

Check the unit for shipping damage and material 
shortage; file a freight claim and notify appropriate 
sales representative.

Verify correct model, options and voltage from 
nameplate.

Verify that the installation location of the unit will 
provide the required clearance for proper operation.

Assemble and install the roof curb (if applicable). Refer 
to the latest edition of the curb installers guide that 
ships with each curb kit.

Fabricate and install ductwork; secure ductwork to 
curb.

Rigging the unit.

Set the unit onto the curb; check for levelness.

Ensure unit-to-curb seal is tight and without buckles or 
cracks.

Install and connect a condensate drain line to the 
evaporator drain connection.

WARNING

Risk of Roof Collapsing!

Confirm with a structural engineer that the roof 
structure is strong enough to support the combined 
weight of the roofcurb and the unit. Refer to 

“Unit 

Weights,” p. 17

 for typical unit and curb weights. Failure 

to ensure proper structural roof support could cause the 
roof to collapse, which could result in death or serious 
injury and property damage.

NOTICE

Water Damage! 

Non-factory penetrations through the base of this unit 
are not allowed. Any penetration in the base of the unit 
may affect the water tight integrity of the unit and lead 
to water leaks into the conditioned space. Failure to 
follow instructions could result in equipment and 
property damage.

WARNING

Proper Field Wiring and Grounding 
Required!

All field wiring MUST be performed by qualified 
personnel. Improperly installed and grounded field 
wiring poses FIRE and ELECTROCUTION hazards. To 
avoid these hazards, you MUST follow requirements for 
field wiring installation and grounding as described in 
NEC and your local/state electrical codes. Failure to 
follow code could result in death or serious injury. 

Summary of Contents for Voyager YH Series

Page 1: ...nowledge and training 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 l...

Page 2: ...ardous situation which if not avoided could result in minor or moderate injury It could also be used to alert against unsafe practices NOTICE Indicates a situation that could result in equipment or pr...

Page 3: ...n operation and maintenance procedures for air cooled systems By carefully reviewing the information within this manual and following the instructions the risk of improper operation and or component d...

Page 4: ...with Belt Drive Indoor Fan 37 Start Up 38 Economizer Start Up 38 Compressor Start Up 38 Dehumidification Option 39 Heating Start Up 39 Variable Air Volume Applications Multi zone Traditional VAV 39 Fi...

Page 5: ...Speed Oversized Motor A Single Zone Variable Air Volume Standard Motor w Shaft Grounding Ring B Multi Speed Standard Motor w Shaft Grounding Ring C Single Zone Variable Air Volume Oversized Motor w S...

Page 6: ...Unit Mounted Disconnect or Circuit Breaker 6 Available factory installed on downflow AND horizontal units Verify with ordering system 7 Cannot be fused 8 Must be factory installed when using Through...

Page 7: ...lding management type control system It allows the control and monitoring of the system through an ICS panel The module can be ordered from the factory or ordered as a kit to be field installed Follow...

Page 8: ...filter switch has been closed for at least 2 minutes The system will continue to operate regardless of the status of the filter switch Please note that on units equipped with factory installed MERV 1...

Page 9: ...ctronic sensor features four system switchsettings Heat Cool Auto and Off and two fan settings On and Auto with four system status LEDs It is a manual or auto changeover control with dual setpoint cap...

Page 10: ...be performed on the smoke detector to insure that it will functionproperly For detailedinstructions concerning these checks and procedures refer to the appropriate section s of the smoke detector Inst...

Page 11: ...ek medical attention Skin Contact Wash affected areas gently with soap and warm water after handling Storage Take precautions to prevent condensate from forming inside the unit s electrical compartmen...

Page 12: ...12 RT SVX26R EN Unit Dimensions Figure 1 Typical installation clearance for single and multiple unit applications 5 8 5 0...

Page 13: ...ional data for 12 tons standard efficiency units DOWNFLOW CONDENSATE DRAIN CONN 1 25MM NPT 1 2 NPT GAS CONNECTION SERVICE GAUGE PORT ACCESS 2 51MM DIA HOLE UNIT POWER WIRE 7 8 22MM DIA HOLE UNIT CONTR...

Page 14: ...ficiency units SUPPLY RETURN CLEARANCE 48 1219 MM CLEARANCE 60 1524 MM CLEARANCE 18 457 MM CLEARANCE 38 965 MM HORIZONTAL CONDENSATE DRAIN CONNECTION 1 0 IN NPT FILTER ACCESS DOOR HORIZONTAL UNITS ONL...

Page 15: ...sions RT SVX26R EN 15 Note NPT Gas Connection Figure 6 Unit dimensional data 15 25 tons high efficiency units Figure 7 Unit dimensional data 15 25 tons standard efficiency units 12 25 tons high effici...

Page 16: ...Unit Dimensions 16 RT SVX26R EN Figure 8 Horizontal duct dimensional data 15 25 tons standard efficiency units 12 25 tons high efficiency units...

Page 17: ...69 565 412 455 YS 300G 2020 644 529 386 461 YH 300G 2291 734 603 432 523 YH 300 Reheat unit 2208 759 539 402 508 Table 2 Typicalunitweightsandpointloadingdata kg Unit Models Net Weights Corner Weights...

Page 18: ...the unit onto the curb Make sure that the gasket on the curb is not damaged while positioning the unit WARNING Heavy Objects Ensure that all the lifting equipment used is properly rated for the weigh...

Page 19: ...ements The checklist listed below is a summary of the steps required to successfully install a commercial unit This checklist is intended to acquaint the installing personnel with what is required in...

Page 20: ...e drain location A condensate trap must be installed at the unit due to the drain connection being on the negative pressure side of the fan Install the P Trap using the guidelines in Figure 11 A conde...

Page 21: ...nts The termination points depending on the customer option selected would be a factory mounted nonfused disconnect switch UDC or circuit breaker UCB Provide proper grounding for the unit in accordanc...

Page 22: ...nductor sizing guidelines that must be followed when interconnecting the DC binary output devices and the system components utilizing a DC analog input output signal to the unit Note Resistance in exc...

Page 23: ...Installation RT SVX26R EN 23 Figure 15 ReliaTel relative humidity sensor dehumidification option Figure 16 ReliaTel humidistat dehumidification option...

Page 24: ...7 Typical field wiring diagrams for optional controls ReliaTel only BAYSENS075 BAYSENS075 BAYSENS119 BAYSENS110 BAYSENS108 BAYSENS106 BAYSENS073 BAYSENS074 BAYSENS075 ASYSTAT669A OPTIONAL REMOTE SENSO...

Page 25: ...d Example 2 illustrates three sensors squared in a series parallel circuit Example 3 illustrates the circuit required for this senor Table 5 lists the temperature versus resistance coefficient for all...

Page 26: ...Installation 26 RT SVX26R EN Table 6 Space temperature averaging examples...

Page 27: ...0 w c Manifold Gas Pressure b b Staged gas heat units have a negative pressure gas valve Never adjust the staged gas pressure valve to a positive pressure 0 2 w c Combustion Blower Suction Pressure 1s...

Page 28: ...on Connect the phase sequence indicator leads to the terminal block or to the Line side of the optional factory mounted disconnect switch as follows Black phase A to L1 Red phase B to L2 Yellow phase...

Page 29: ...operation canbe activatedindividually by temporarilyshortingacrossthe Test terminalsfortwoto three seconds The Liteport LED located on the RTRM module will blink when the test mode has been initiated...

Page 30: ...ty found on the unit nameplate and the N E C 4 Route low voltage class II control wiring through hole in base of unit but not through high voltage conduit Feedcontrolwiringthroughbushingprovided on si...

Page 31: ...WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures...

Page 32: ...or as follows 1 Remove the smoke detector assembly from its shipping position in the indoor fan compartment This assembly is attached with three screws to the indoor fan board near the top of the unit...

Page 33: ...the barometric relief damper and reach inside through the barometric relief outlet to access and connect the copper exhaust elbow to the smoke detector exhaust tube 8 Connect the leg of the plastic el...

Page 34: ...at airflow through the unit is adequate for proper sampling by the return air smoke detector complete adherence to the maintenance procedures including recommended intervals between filter changes and...

Page 35: ...NG Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to en...

Page 36: ...dependent on the airflow configuration cabinet size and fresh air selection Refer to Figure 28 through Figure 32 Refer to BAS SVX40 EN for instructions and troubleshooting procedures Figure 28 WCI mo...

Page 37: ...across the Test 1 and Test 2 terminals on LTB1 one time to start the Minimum Ventilation Test Once the supply fan has started check for proper rotation The direction of rotation is indicated by an ar...

Page 38: ...e additional time if continuing from previous component start up or until the desired startup component Test is started Scroll Compressors a Once each compressor has started verify that the rotation i...

Page 39: ...standalone control Supply Air Temperature Control Occupied Cooling and Heating The RTRM is designed to maintain a selectable supply air temperature of 40 F to 80 F with a 3 5 F deadband To reduce the...

Page 40: ...System Mode Fan Auto Fan On Heat DWU Active DWU Off DWU2 Off4 DWU2 VAV Heating4 Cool VAV Cooling1 VAV Cooling1 Auto DWU Active DWU Off DWU or Cooling1 2 3 4 VAV Cooling1 DWU or Cooling1 2 3 4 VAV Coo...

Page 41: ...in place Close the main disconnect switch or circuit protector switch that provides the supply power to the unit s terminal block or the unit mounted disconnect switch Figure 36 RTAM module Static pr...

Page 42: ...arge line thermostat DLT2 are closed When the second stage compressor is energized it starts to maintain the zone temperature to within 2 F of the sensor setpoint at the sensed location ReliaTel Contr...

Page 43: ...y By utilizing a humidity sensor and a temperature sensor in both the return air stream and the outdoor air stream the unit control processor RTRM will be able to establish which conditions are best s...

Page 44: ...ompressor operation The cycle will last for a period of 3 minutes 3 The 90 minute cycle count will be reset anytime there is a normal transition between cooling and dehumidification Transitioning from...

Page 45: ...a range of 0 100 and the minimum position that will be utilized while the supply fan is at high speed will be set with the Building Design Min Position pot with a range of 0 50 If the Building Design...

Page 46: ...Cooling Units The minimum fan speed for units with 2 stages of DX Cooling will be 63 of the unit s full airflow capacity At Stage 1 of DX Cooling the Fan Speed will be at a minimum of 63 and at Stage...

Page 47: ...to a point that would be higher than the calculated linear line between the Design Minimum Position setpoints at Minimum and Maximum fan speed command the minimum position will be limited to the poin...

Page 48: ...ng purge the supply fan will track based on the appropriate minimum speed for the associated number of compressors energized After the Purge Cycle is complete the Supply Fan will be released to normal...

Page 49: ...ntiometer or a remotely mounted potentiometer The setpoint ranges are from 50 F to 90 F When the zone temperature meets or exceeds the MWU setpoint the unit will switch to the Cooling mode The economi...

Page 50: ...eating types the unit will utilize 100 full airflow during all active heating periods like traditional Constant Volume units If the unit has modulatingheat the unitcanbemadetododischargeheatingwithVAV...

Page 51: ...The shutdown is communicated to Tracer if applicable and the Heat and Cool LED outputs RTRM J6 7 and J6 8 will blink at a nominal rate of 1 blink per second Phase Monitor The Phase Monitor is a 3 pha...

Page 52: ...Frostat control monitors the evaporator coil temperature to prevent the evaporator from freezing due to low operating temperatures whenever there is a demandfor cooling Whenaclosedcircuithasoccurredfo...

Page 53: ...s number represents the force in pounds required to give the needed deflection 6 Compare the force scale reading Step 5 with the appropriate force valuelistedin Table 23 p 53 Ifthe force reading is ou...

Page 54: ...he belt is frayed or worn replace it Refer to Fan Belt Adjustment Belt Drive Units p 53 for belt replacement and adjustments Verify that all wire terminal connections are tight Remove any corrosion pr...

Page 55: ...the blanks provided 1 Complete Unit Model Number _____________________________________________________ 2 Unit Serial Number _____________________________________________________ 3 Wiring Diagram Numb...

Page 56: ...he sequence of operations for each mode to assist in verifying proper operation Make the necessary repairs and proceed to Step 7 and Step 8 7 If no abnormal operating conditions appear in the test mod...

Page 57: ...Cool Failure Emergency Stop is activated Method 2 The second method for determining system status is done by checkingvoltagereadings atthe RTRM J6 The system indication descriptions and the approxima...

Page 58: ...he SERVICE LED will be turned On again after the 2 1 minute ignore delay This LED being turned On will have no other affect on unit operation It is an indicator only Fan Failure Switch When the Fan Fa...

Page 59: ...operation exit the test mode Turn the fan on continuously at the ZSM by pressing the button with the fan symbol If the fan comes on and runs continuously the ZSM is good If you are not able to turn th...

Page 60: ...onomize Slow Flash Normal Not OK to Economize Fast Flash 1 4 Second On 2 Seconds Off Error Code Communications Failure Pulse Flash 1 30 Second On 1 4 Second Off 2 Seconds between pulse sequences Error...

Page 61: ...300 50 60HZ 2 Stage Gas Heat or Modulating Gas Heat with or without Dehumidification Modules 1213 1015 YS H 150 300 Gas Heat Component layout 1213 2242 YS H 150 300 Gas Heat Table 29 Wiring diagrams f...

Page 62: ...u specific legal rights and you may also have other rights which vary from state to state Trane 2701 Wilma Rudolph Blvd Clarksville TN 37040 1008 Attention Manager Product Service GW 602 4800 Models 2...

Page 63: ...is any application where the end purchaser uses the product for other than personal family or household purposes A 5 year limited warranty is provided for the optional Low Leak Economizer when combin...

Page 64: ...ications without notice We are committed to using environmentally conscious print practices Trane and American Standard create comfortable energy efficient indoor environments for commercial and resid...

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