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Installation

RT-SVX46G-EN

27 

If applicable, assemble and install the roof curb. Refer 
to the latest edition of the curb installers guide that 
ships with each curb kit.

Fabricate and install ductwork; secure ductwork to 
curb.

If applicable, install pitch pocket for power supply 
through building roof.

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.

Note:

Condensate Overflow Switch (if equipped) will not 
work if unit is not leveled properly.

Factory Installed Economizer

Ensure the economizer has been pulled out into the 
operating position. Refer to the economizer installers 
guide for proper position and setup.

Install all access panels.

Temperature Limit Switch Usage for Gas 

Heat Units

Units are factory shipped in the down flow discharge 
configuration but can be field converted to a horizontal 
discharge configuration. Some, but not all units require a 
different TCO1 limit switch, which is attached to the 
combustion blower motor if horizontal discharge 
configuration is used. 
If any of the aforementioned units are installed in the down 
flow discharge configuration, remove the additional TCO1 
limit switch from the combustion blower motor and 
discard.

Horizontal Discharge Conversion 
(3 to 5 Ton Units)

Note:

3 ton unit supply cover to supply opening and 
return cover to return opening. 4 and 5 ton unit 
return cover to supply opening and supply cover to 
return opening.

Supplies needed by installer for conversion: 3 oz. tube of 
high temperature RTV sealant. (500°F / 260°C: similar to 
Dow Corning 736) 

Important:

Failure to use recommended sealant could 
result in unit performance loss.

If a unit is to be converted to a horizontal discharge, the 
following conversion must be performed:
1. Remove RETURN and SUPPLY duct covers.
2. Apply 1/4 in. (6 mm.) continuous bead of 500°F RTV 

sealant to the flange of the duct cover to be installed in 
the supply opening of the base pan.

Note:

Perform the same task for the 3 ton duct cover to be 
installed in the return opening.

3. For the 3 ton unit, slide duct cover with insulation side 

up into duct openings until inward edge of duct cover 
engages with the 2 retaining clips on the duct flanges. 

Table 3.

TCO1 tripping values 

Unit Model 

TCO1 Tripping Values -

Downflow/ Horizontal

TCO Location

YZC036E**(L,X)

190°F

Top

YZC036E**(M,Y)

170°F/220°F

Top

YZC036E**(H,Z)

220°F

Top

YZC048F**(L,X)

145°F/155°F

Bottom

YZC048F**(M,Y)

170°F

Bottom

YZC048F**(H,Z)

220°F

Bottom

YZC060E**(L,X)

140°F

Bottom

YZC060E**(M,Y)

170°F

Bottom

YZC060E**(H,Z)

170°F

Bottom

YZC072F**(L,X)

180°F/200°F

Bottom

YZC072F**(M,Y)

180°F/230°F

Bottom

YZC072F**(H,Z,V)

180°F/230°F

Bottom

YZC090F**(L,X)

200°F/220°F

Bottom

YZC090F**(M.Y)

190°F/225°F

Bottom

YZC090F**(H,Z,V)

200°F/210°F

Bottom

YZC102F**(L,X)

200°F/220°F

Bottom

YZC102F**(M,Y)

190°F/225°F

Bottom

YZC102F**(H,Z,V)

200°F/210°F

Bottom

YZC120F**(L,X)

170°F/200°F

Bottom

YZC120F**(M,Y)

170°F/190°F

Bottom

YZC120F**(H,Z,V)

135°F/155°F

Top

Table 4.

TCO1 tripping values for units with low NOx 

gas furnace option (digit 34 = A)

Unit Model - High Efficiency

TCO1 Tripping Values

Downflow / Horizontal

YHC036***X and Digit 34 = A

190°F

YHC048***X and Digit 34 = A

170°F

YHC048***Y and Digit 34 = A

190°F

YHC060***X and Digit 34 = A

170°F

YHC060***Y and Digit 34 = A

190°F

Figure 46. Duct cover

Table 3.

TCO1 tripping values (continued)

Unit Model 

TCO1 Tripping Values -

Downflow/ Horizontal

TCO Location

RTV Sealant

Содержание Precedent YZC036E

Страница 1: ...NG Only qualified personnel should install and service the equipment The installation starting up and servicing of heating ventilating and air conditioning equipment can be hazardous and requires spec...

Страница 2: ...ion 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 property damage...

Страница 3: ...ht for Ultra Low NOx Gas Furnace option in Table 2 Dimension and Weights Chapter Added new TCO1 Instructions for Low NOx Gas furnace option and NOx Gas Furnace Option Component Layout section in the I...

Страница 4: ...Installation 31 Requirements for Gas Heat 32 Ultra Low NOx Gas Furnace Option Compo nent Layout 33 Condensate Drain Configuration 33 Filter Installation 34 Field Installed Power Wiring 34 Main Unit P...

Страница 5: ...Overflow Switch 52 Zone Temperature Sensor ZTS Tests 52 Test 4 LED Indicator Test SYS ON HEAT COOL and SERVICE 53 Relative Humidity Sensor Test 53 Programmable and Digital Zone Sensor Test 53 ReliaTel...

Страница 6: ...Service Access Filters 0 Standard Panels Standard Filters A Hinged Access Panels Standard Filters B Standard Panels 2 inch MERV 8 Filters C Hinged Access Panels 2 inch MERV 8 Filters D Standard Panel...

Страница 7: ...and power exhaust Do not order the return air smoke detectors when using this type of accessory 7 Includes gas piping and shutoff field assembly required 8 Not available with high temperature duct sen...

Страница 8: ...ent unit data Compressor Nameplate The nameplate for the compressors are located on the side of the compressor Variable speed compressors are not marked with a RLA This value is derived from testing M...

Страница 9: ...mpressor from overheating over 300 F dome temp in case of indoor fan failure cooling or outdoor fan failure heating Duct Mounted Relative Humidity Sensor BAYSENS037 Field installed duct mounted humidi...

Страница 10: ...he power supply circuit is not balanced with the proper phase sequence of L1 L2 L3 for the 3 conductors of a 3 phase circuit The line to line voltage is not between 180 volts and 633 volts Power Exhau...

Страница 11: ...er to maintain space temperature Smoke Detector Sensor Optional This sensor provides high limit shutdown of the unit and requires a manual reset The sensor is used to detect smoke in the air condition...

Страница 12: ...r features five system settings Auto Off Cool Heat and Emergency Heat and with On and Auto fan settings It is a manual or auto changeover control with dual setpoint capability Other features include a...

Страница 13: ...dust If symptoms persist seek medical attention Skin Contact Wash affected areas gently with soap and warm water after handling WARNING Fiberglass Wool Exposition to glass wool fibers without all nec...

Страница 14: ...ser air Figure 1 Typical installation clearances for single and multiple unit applications Side by Side Note 2 End to End Note 2 3 7 0 2134 MM 6 0 1829 MM 3 0 914 MM Note 1 Single Unit 3 0 914 MM 3 0...

Страница 15: ...only damage Test lift unit approximately 24 inches to verify proper center of gravity lift point To avoid dropping of unit reposition lifting point if unit is not level Figure 2 Corner weights Center...

Страница 16: ...cable for 208 230V 3 10 Ton units and 460V 6 10 Ton units only e Applicable to gas electric units only Figure 4 Cooling and gas electric 3 tons ultra high efficiency a b a All dimensions are in inches...

Страница 17: ...3 16 1732 MM 37 940 MM 44 1 2 1130 MM 7 CLEARANCE 36 914 MM CLEARANCE 36 914 MM FOR DOW NFLOW CLEARANCE 18 457 MM FOR HORIZONTAL CLEARANCE 36 914 MM CLEARANCE 48 1219 MM RETURN SUPPLY 14 356 MM 37 7 1...

Страница 18: ...ultra high efficiency horizontal airflow supply and return Note All dimensions are in inches millimeters Evaporator Section Access Panel Alternate Condensate Drain Connection 3 4 14 NPT Dia Hole 1 2 N...

Страница 19: ...MM 2 51 MM 84 1 2 2146 MM 1 3 4 44 MM 14 356 MM 46 3 8 1178 MM 34 3 8 873 MM 34 3 8 873 MM Figure 19 Cooling and gas electric 4 to 5 tons ultra high efficiency downflow duct connections field fabricat...

Страница 20: ...SUPPLY 33 838 MM 4 1 8 104 MM 27 5 8 701 MM THROUGH THE BASE CONDENSATE 40 3 4 1035 MM THROUGH THE BASE ELECTRICAL 5 7 8 149 MM 5 127 MM 10 7 8 276 MM 3 3 4 95 MM 2 3 4 71 MM 6 1 2 165 MM Figure 24 Co...

Страница 21: ...tra high efficiency swing diameter for hinged door s option Note All dimensions are in inches millimeters Figure 30 Cooling and gas electric 6 to 10 tons ultra high efficiency economizer manual or mot...

Страница 22: ...ATE BASE CONDENSATE 4 5 8 4 5 8 119 MM 119 MM THROUGH THE THROUGH THE BASE GAS BASE GAS 5 7 8 5 7 8 149 MM 149 MM 27 5 8 27 5 8 701 MM 701 MM 42 3 16 42 3 16 1072 MM 1072 MM 6 3 8 6 3 8 163 MM 163 MM...

Страница 23: ...6G EN 23 Figure 37 Cooling and gas electric 10 tons ultra high efficiency swing diameter for hinged door s option Note All dimensions are in inches millimeters Applicable to Y_C models only 22 1 2 572...

Страница 24: ...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 we...

Страница 25: ...235 MM 15 1 2 394 MM 4 102 MM 24 610 MM 18 457 MM 27 9 16 701 MM 4 3 16 106 MM 4 9 16 116 MM 23 1 2 597 MM 2 13 16 71 MM 6 1 2 165 MM 3 11 16 94 MM 4 7 8 124 MM 5 1 16 128 MM 9 15 16 253 MM 4 102 MM...

Страница 26: ...operly rigged and balanced make any necessary rigging adjustments 6 Lift the unit enough to allow the removal of base fork pocket protection components as shown in the following figure 7 Down flow uni...

Страница 27: ...nt 500 F 260 C similar to Dow Corning 736 Important Failure to use recommended sealant could result in unit performance loss If a unit is to be converted to a horizontal discharge the following conver...

Страница 28: ...imit control shipped in the heater compartment Replace TCO1 following the instructions in steps 1 through 3 below If the unit being installed does not correspond to any in the following list skip step...

Страница 29: ...ontal discharge before installing return air duct Note If unit is equipped with Discharge Air Sensing option refer to the following figure for proper tube positioning based on unit tonnage 6 After com...

Страница 30: ...p 2 and secure the right side of the bracket with one of the screws removed from the access panel Refer to Figure 55 p 30 5 Using the remaining 2 screws removed in step 2 secure the bottom bracket Ref...

Страница 31: ...the gas supply line 4 Disconnect the 5 inch pipe nipple and union from the Through the Base Gas kit assembly 5 Using pipe sealant attach the 6 inch nipple and gas shutoff assembly to the 90 elbow on...

Страница 32: ...mum gas supply pressure for modulating V models should be 5 5 inch wc Maximum gas supply pressure must not exceed 14 0 inch wc Manifold pressure for single stage heaters should be set to 3 3 inch wc M...

Страница 33: ...ess panels 2 Remove the support panel that the condensate drain pan exits through 3 Slide the condensate drain pan out of the unit and rotate 180 4 Slide the condensate drain pan back into the unit al...

Страница 34: ...densate overflow switch will need to be moved to the second hole in its bracket to avoid contact with headers or indoor coil Filter Installation The quantity of filters is determined by unit size Acce...

Страница 35: ...ll field wiring must conform to NEC guidelines as well as state and local codes Control Power Transformer The 24 volt control power transformers are to be used only with the accessories called out in...

Страница 36: ...run the electrical wires transporting DC signals in or around conduit housing high voltage wires Route low voltage wiring per illustrations on page 37 DC Conductors WARNING Hazardous Voltage Failure t...

Страница 37: ...uared in a series parallel circuit Using BAYSENS077 two sensors are required to accomplish space temperature averaging Example 3 illustrates the circuit required for this sensor Table 6 p 39 lists the...

Страница 38: ...Figure 66 Examples Figure 67 Typical field wiring diagrams for optional controls ReliaTel only BAYSENS075 BAYSENS075 BAYSENS119 BAYSENS110 BAYSENS108 BAYSENS106 BAYSENS073 BAYSENS074 BAYSENS075 ASYSTA...

Страница 39: ...pe 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 77 155 345 545 Note Capacity of Pipe of Different Diameters and Lengths in Cu Ft...

Страница 40: ...he voltage problem before operating this equipment Electrical Phasing Three Phase Motors The compressor motor s and the supply fan motor are internally connected for the proper rotation when the incom...

Страница 41: ...he 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 phasing If LED on...

Страница 42: ...ystem LED located on the IGN module is turned On within one second of power up if internal operation is okay Table 9 Service test guide for component operation Test Step Mode Fan Econ a Comp 1 Comp 2...

Страница 43: ...setpoint the unit controller will increase the supply airflow up to the user selected application specific maximum airflow and begin to stage heating outputs gas or electric to meet the space demand...

Страница 44: ...o ON and supplying a valid morning warm up setpoint The unit is shipped with a morning warm up setpoint configured and the daytime warm up function is activated switch on Opening the DWU enable switch...

Страница 45: ...eat charging curve in the Service Facts Superheat should be within 5 F of the superheat chart value 4 Repeat steps 1 through 4 for each refrigerant circuit 5 To stop the SERVICE TEST turn the main pow...

Страница 46: ...switch Fan selection switch and Zone Temperature settings for automatic operation are correct Inspect the unit for misplaced tools hardware and debris Verify that all exterior panels including the con...

Страница 47: ...s as necessary Check the supply fan belt If the belt is frayed or worn replace it Refer to the Fan Belt Adjustment section for belt replacement and adjustments Verify that all wire terminal connection...

Страница 48: ...l coils Moreover chemical cleaners are a risk factor to MCHE due to the material of the coil The manufacturer does not recommend the use of chemical cleaners to clean microchannel coils Using chemical...

Страница 49: ...with hail guards follow reinstallation procedure listed below Hail Guard Reinstallation 10 To reinstall the hail guard locate the bottom of the hail guard in the lower bracket and secure it to the up...

Страница 50: ...sist in verifying proper operation Make the necessary repairs and proceed to Step 8 and Step 9 8 If no abnormal operating conditions appear in the test mode exit the test mode by turning the power Off...

Страница 51: ...t the LPC s has not tripped If no voltage is present LPC s has tripped Service Failure If the supply fan proving switch has closed the unit will not operate when connected to RTOM check the fan motor...

Страница 52: ...mmediately after resetting the switch to the Normally Open position or any time that the IDM is turned Off If the switch remains closed and the IDM is turned On the SERVICE LED will be turned On again...

Страница 53: ...ltage again between J6 11 and J6 12 voltage should flash high and low every 0 5 seconds The voltage on the low end will measure about 19 Vdc while the voltage on the high end will measure from approxi...

Страница 54: ...dFail If Used Unit Fails to Economize Unit Economizing When It Should Not Damper Position Indicated Damper stuck at Minimum X X a X a X a X X Damper Stuck Open X X a X a X a X X Mixed Sensor Failure X...

Страница 55: ...1 or CC2 24 Vac control circuit has opened check CC1 and CC2 coils and any of the controls below that apply to the unit HPC1 HPC2 LPC1 LPC2 Frostat Resetting Cooling and Ignition Lockouts Cooling fail...

Страница 56: ...YZC 072 090 102 120 FW 460V 4366 8316 Diagram Power YZC 036E 048F 060E 4 230V 4366 8318 Diagram Power YZC 036E 048F 3 230V 1213 1654 Diagram Power YZC060E3 460V 1213 3643 Ultra Low NOx 3 4 and 5 Ton...

Страница 57: ...included Warrantor s obligations and liabilities under this warranty are limited to furnishing F O B Warrantor factory or warehouse at Warrantor designated shipping point freight allowed to Buyer s c...

Страница 58: ......

Страница 59: ......

Страница 60: ...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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