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QUANTECH

135

SECTION 8 – UNIT OPERATION

Form QCC2-NM1 

Issue Date: 5/20/2021

8

Suction pressure control

The setpoint in Suction Pressure Control is the suction 

pressures each individual system on the condensing 

unit will control to within plus or minus the cooling 

range. The Setpoint High Limit is the Setpoint plus the 

Cooling Range. The Setpoint Low Limit is the Setpoint 

minus the Cooling Range. Each system is controlled 

independently of each other according to its setpoint 

and cooling range.
Each system must have its own zone thermostat. If the 

respective zone thermostat is closed, the lead compres-

sor on that system will be energized. In addition the 

liquid line solenoid to that system will be energized. 

Upon energizing any compressor the 60 second Anti-

Coincidence timer will be initiated.
If after 150 seconds of run-time the suction pressure is 

still above the Setpoint High Limit, the next compres-

sor in sequence will be energized. Additional loading 

stages are energized at a rate of once every 150 seconds 

if the suction pressure remains above the Setpoint High 

Limit. Each system will have its own load timer of 150 

seconds. 

If the suction pressure falls below the Setpoint High 

Limit and greater than the Setpoint Low Limit, load-

ing and unloading do not occur. This area of control is 

called the control range.
If the suction pressure falls below the Setpoint Low 

Limit, unloading (compressors cycling OFF) occurs at 

a rate of 30 seconds per system. The zone thermostat 

must be satisfied before the last compressor in the sys-

tem cycles OFF, even if the suction pressure is below 

the Setpoint Low Limit.
Hot Gas Bypass solenoid will be energized as the last 

stage of unloading. If the zone thermostat calls for 

cooling when the suction pressure is below the Set-

point Low Limit, the first stage compressor will be en-

ergized with the hot gas solenoid.
It should be noted that the zone thermostat has ultimate 

control. As long as the zone thermostat is calling for 

cooling, at least one compressor will be running, re-

gardless of whether the suction pressure is below Set-

point Low Limit.

Figure 39

 illustrates loading and unloading in Suc-

tion Pressure Control Mode. Refer to section on 

SETPOINTS keys for programmable values.

Figure 39 - 

Suction Pressure Control

 

30 second 

control range 

150 second       

 

unloading 

(no compressor staging) 

loading

 

117 PSIG (8.0 BAR) 

126 PSIG (8.7 BAR) 

 Setpoint
 

121 PSIG (8.3 BAR)

Setpoint = 121 PSIG (8.3 BAR)

Control Range = 5 psig ( 0.35 BAR)

Setpoint

Low Limit

Setpoint

High Limit

  

Содержание QCC2015CEE

Страница 1: ...d R 410A QCC2015CEE QCC2070CEE Air Cooled Scroll Compressor Condensing Units Style E 60 Hz 15 ton to 80 ton 50 kW to 280 kW Air Cooled Scroll Compressor Condensing Units Installation Operation and Mai...

Страница 2: ...ls this document and any referenced materials This in dividual must also be familiar with and comply with all applicable industry and governmental standards and regulations pertaining to the task in q...

Страница 3: ...vide current information automatically to the manual or product owner Updated manuals if applicable can be obtained by contacting the nearest Quantech Service office It is the responsibility of riggin...

Страница 4: ...025C 030C 040C 045C 050C 060C 070C QC C 2 015C E E 46 X E Refrigerant E R 410a High efficiency unit Voltage code 17 208 3 60 28 230 3 60 40 380 3 60 46 460 3 60 58 575 3 60 Scroll compressor Unit Quan...

Страница 5: ...out Capability 16 Basic Unit 21 SECTION 3 HANDLING AND STORAGE 27 Delivery and Storage 27 Inspection 27 Unit Rigging 27 SECTION 4 INSTALLATION 29 Installation Checklist 29 Handling 29 Location And Cle...

Страница 6: ...136 Evaporator Blower Control 136 Evaporator Heater Control 136 Pumpdown Control 136 Load Limiting 139 Compressor Run Status 139 Alarm Status 139 BAS EMS Discharge Air Temperature Reset Using a Volta...

Страница 7: ...RE 20 Power Wiring Single Circuit 68 FIGURE 21 Power Wiring Dual Circuit 70 FIGURE 22 Power Wiring Dual Circuit 72 FIGURE 23 Connection Wiring Single Circuit 74 FIGURE 24 Connection Wiring Single Circ...

Страница 8: ...6 Steps 134 TABLE 18 QCC2015C QCC2070C Condenser Fan Control Using Outdoor Ambient Temperature and Discharge Pressure 137 TABLE 19 QCC2040C QCC2070C Condenser Fan Control Using Discharge Pressure Onl...

Страница 9: ...cally and dynamically bal anced for vibration free operation They are directly driven and positioned for vertical air discharge The fan guards are constructed of heavy gauge rust resis tant PVC polyvi...

Страница 10: ...fety of other personnel and the machinery Correct utilization of the machinery in accordance with the procedures detailed in the manuals About this manual The following terms are used in this document...

Страница 11: ...maintenance on live equipment must only be per formed by suitably trained and qualified personnel No attempt should be made to gain access to the control panel or electrical enclosures during normal o...

Страница 12: ...QUANTECH 12 Form QCC2 NM1 Issue Date 5 20 2021 THIS PAGE IS INTENTIONALLY LEFT BLANK...

Страница 13: ...pray testing yields a minimum ASTM 1654 rating of 6 Units are designed in accordance with NFPA 70 National Elec tric Code ASHRAE ANSI 15 Safety code for mechanical refrigeration and are cETL listed Al...

Страница 14: ...perature System pressures each circuit Operating hours and starts each compressor Print calls up to the liquid crystal display Operating data for the systems History of fault shutdown data for up to t...

Страница 15: ...liminate condensing unit failure due to AC powered failure battery discharge Programmed setpoints are retained in lithium battery backed RTC memory for 5 years minimum Building automation system inter...

Страница 16: ...tween 0 90 and 0 95 Control options Ambient Kit Low Units will operate to 25 F 4 C This factory mounted accessory includes all necessary components to permit chiller operation to 0 F 18 C This option...

Страница 17: ...these or the post coated coils below are recommended for units being installed at the seashore or where salt spray may hit the unit Post Coated Dipped Condenser Coils The unit s coils are constructed...

Страница 18: ...rs are used with steeper pitch fans on these factory mounted devices Vibration Isolators Level adjusting spring type 1 in 25 4 mm or seismic deflection or neoprene pad isolators for mounting un der un...

Страница 19: ...oduct description Form QCC2 NM1 Issue Date 5 20 2021 2 Power panel components Figure 3 Power Panel Components LD13247 COMPRESSOR CONTACTORS XTBF1 FAN CONTACTORS FAN CONTACTOR COMPRESSOR OVERLOADS FAN...

Страница 20: ...uct description Power panel control components Figure 4 Power Panel Control Components COMPRESSOR OVERLOADS COMPRESSOR CONTACTORS FAN CONTACTORS FAN FUSES CONTROL RELAY MICROCOMPUTER CONTROL CENTER MI...

Страница 21: ...PTION OPTION DESCRIPTION MODEL Model PIN 1 4 QCC2 QCC2 CAP Capacity PIN 5 8 015C 015C 020C 020C 025C 025C 030C 030C 040C 040C 045C 045C 050C 050C 060C 060C 070C 070C UNIT Unit Designator PIN 9 E High...

Страница 22: ...N American Safety Code cUL cETL SENSOR PIN 25 X No Option Required Q Special Quote PUMP Motor Current Module PIN 26 X No Motor Current Readout Required C Motor Current Readout Q Special Quote REMOTE...

Страница 23: ...uote COILS Coils PIN 45 X Aluminum Coil B Pre Coated Fin Coil C Copper Coil P Post Coated Dipped Coil Q Special Coil PIN46 PIN 46 X No Option Required Q Special Quote FANMOTORS Fan Motors PIN 47 X TEA...

Страница 24: ...inerization required A Buy American Act Compliance B Both Buy American Act Compliance and Container Shipping Kit Factory Prep C Container Shipping Kit Factory Load P Container Shipping Kit Factory Pre...

Страница 25: ...INE SERVICE VALVE LIQUID LINE SOLENOID VALVE TXV SIGHT GLASS MOISTURE INDICATOR SOLENOID OPERATED HOT GAS BYPASS VALVE YCUL REFRIGERANT FLOW DIAGRAM NOTE YCUL0046 0090 HAVE TWO REFRIGERANT SYSTEMS HOT...

Страница 26: ...akes place before returning to the DX Coil Figure 6 Process and Instrumentation Diagram Process and instrumentation diagram PS ZCPR 1 ZCPR 2 ZCPR 3 DV HPL HPC P DV LPC P Condenser Fans Fans YLLSV S T...

Страница 27: ...o limit the risk of ac cidental physical damage To prevent inadvertent operation of the pressure relief devices the unit must not be steam cleaned It is recommended that the unit is periodically in sp...

Страница 28: ...used in order to pre vent damage to the unit from the lifting chains Units are provided with lifting eyes in the sides of the base frame which can be attached to directly using shackles or safety hook...

Страница 29: ...d snow accumulations are expected additional height must be provided to ensure normal condenser air flow Clearances are listed in DIMENSIONS ENGLISH Foundation The unit should be mounted on a flat and...

Страница 30: ...rted by the unit Where cross winds may occur any ductwork must be supported to prevent side loading on the unit If the ducts from two or more fans are to be combined into a common duct back flow dampe...

Страница 31: ...age 50 Load limit input Load limiting is a feature that prevents the unit from loading beyond a desired value The unit can be load limited either 33 40 50 66 or 80 depend ing on the number of compress...

Страница 32: ...pressure cutout A high pressure cutout is installed in the discharge pip ing of each system The cutout opens at 585 psig plus or minus 10 psig and closes at 440 psig plus or minus 25 psig Compressor h...

Страница 33: ...7 8 ft 2 4 m 5 3 ft 1 6 m 1 1 8 in 29 mm 2 7 ft 0 8 m 1 9 ft 0 6 m 1 3 8 in 35 mm 3 2 ft 1 m 2 2 ft 0 7 m 1 5 8 in 41 mm 3 8 ft 1 2 m 2 6 ft 8 m 2 1 8 in 54 mm 5 2 ft 1 6 m 3 4 ft 1 m 2 5 8 in 67 mm...

Страница 34: ...ings are not included in this table and must be taken into account 4 Nominal Tons KW Unloaded is based on one compressor per system operating at design conditions 5 Based on minimum compressor staging...

Страница 35: ...installed to ensure reliable oil re turn at reduced loads Table 5 indicates when a double suction riser should be used for listed pipe sizes to pro vide adequate oil return at reduced loads The calcu...

Страница 36: ...sult of the chilled liquid freezing LD07719 Power Panel Control Panel Terminal Block NF Disconnect SW or Circuit Breaker 1L1 1L2 1L3 GRD MICROPANEL 2 L CTB2 13 14 CTB1 Field Provided Unit Power Supply...

Страница 37: ...EFORE working on equipment MUST BE CLOSED TO OPERATE The unit evaporator heater uses 120 VAC Disconnecting 120 VAC power from the unit at or below freezing temperatures can result in damage to the eva...

Страница 38: ...QUANTECH 38 Form QCC2 NM1 Issue Date 5 20 2021 THIS PAGE IS INTENTIONALLY LEFT BLANK...

Страница 39: ...earest Quantech Sales Representative for application requirements 2 For leaving water temperature higher than 55 F 12 8 C contact the nearest Quantech Sales Representative for application guidelines 3...

Страница 40: ...1781 2004 2240 3300 3326 3673 3685 4703 Operating Weight Alum Fin Coils lb 1471 1592 1838 2079 2967 3001 3233 3245 4142 Copper Fin Coils lb 1614 1806 2044 2285 3325 3359 3710 3722 4748 Nominal Comp C...

Страница 41: ...10 A 15 A 30 A 240 V 40 380 1 60 15 A 10 A 15 A 30 A 480 V 46 460 1 60 15 A 10 A 15 A 30 A 480 V 50 380 415 1 60 15 A 10 A 15 A 30 A 415 V 58 575 1 60 15 A 10 A 15 A 30 A 600 V A Minimum 14 AWG 75 C C...

Страница 42: ...n the circuit Otherwise HACR type circuit breakers must be used Maximum HACR circuit breaker rating is based on 225 of the rated load amps for the largest motor plus 100 of the rated load amps for all...

Страница 43: ...7 2 575 60 55 60 70 70 23 7 148 19 9 109 2 2 9 14 6 400 50 58 100 70 80 23 7 198 21 8 140 2 4 19 030C 200 60 151 200 175 200 59 9 425 59 9 425 2 7 6 30 9 230 60 140 150 175 175 55 5 425 55 5 425 2 7 4...

Страница 44: ...8 425 2 7 6 44 55 8 425 55 8 425 2 7 6 44 230 60 267 400 300 300 55 8 425 55 8 425 2 7 4 19 1 55 8 425 55 8 425 2 7 4 19 1 380 60 171 200 200 200 36 239 36 239 2 4 5 23 1 36 239 36 239 2 4 5 23 1 460...

Страница 45: ...kcmil 2 2 3 0 250 kcmil 60 230 1 6 AWG 350 kcmil 2 2 3 0 250 kcmil 2 2 3 0 250 kcmil 60 380 1 14 AWG 2 0 1 4 AWG 300 kcmil 1 4 AWG 300 kcmil 50 400 1 14 AWG 2 0 PB 0800 1 4 AWG 300kcmil 1 4 AWG 300 k...

Страница 46: ...QUANTECH 46 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data THIS PAGE IS INTENTIONALLY LEFT BLANK...

Страница 47: ...essor Contactor Including Coil Suppressor KCR Control Relay KP Pump Contactor Part Including Coil Suppressor KT Relay Timer M Compressor Motor MF Motor Fan DESIGNATION DESCRIPTION MP Motor Pump NU Not...

Страница 48: ...unit has 3 compressors on the system 1 BMP3 is replaced by a link across terminals 134 and 135 2 BMP3 is replaced by a link across terminals 234 and 235 3 4 Fitted on units with hot gas bypass option...

Страница 49: ...n systems with less than 4 fans 29 30 31 Input dual point circuit breaker option replaces input terminal block 32 Field installed on remote evaporator units 33 Fitted on units with single phase motors...

Страница 50: ...0 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Figure 11 Control Wiring Diagram Single Circuit IPU II QCC2015C QCC2030C Low sound QCC2025C 030C Ultra low sound 460 V and 380 415 V 50 Hz...

Страница 51: ...Issue Date 5 20 2021 5 Figure 11 Control Wiring Diagram Single Circuit Ipu Ii Cont d 035 21472 401 REV E LD22066b OPTIONAL PUMP PACKAGE DUAL SINGLE PUMP SHOWN SEE 035 21472 102 OR 035 21487 102 FOR PO...

Страница 52: ...QUANTECH 52 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data LD22067a QCC2025C 030C Ultra low sound 200 V 230 V 380 V and 575 V Figure 12 Control Wiring Diagram Single Circuit IPU II...

Страница 53: ...QUANTECH 53 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 LD22067b 035 21585 401 REV E Figure 12 Control Wiring Diagram Single Circuit IPU II Cont d...

Страница 54: ...54 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Figure 13 Control Wiring Diagram Dual Circuit IPU II QCC2040C QCC2050C Low sound QCC2040C 070C Ultra low sound 460 V and 380 415 V 50 Hz...

Страница 55: ...Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 Figure 13 Control Wiring Diagram Dual Circuit IPU II Cont d LD22068b OPTIONAL PUMP PACKAGE DUAL SINGLE PUMP SHOWN SEE 035 21447 102 FOR POWER WIRIN...

Страница 56: ...6 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data LD22069a QCC2060C QCC2070C Low sound QCC2040C 070C Ultra low sound 200 V 230 V 380 V and 575 V Figure 14 Control Wiring Diagram Dual Circu...

Страница 57: ...ANTECH 57 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 LD22069b SHOWN SEE 035 21447 102 FOR POWER WIRING 035 21586 401 REV D Figure 14 Control Wiring Diagram Dual Circuit IPU II Cont...

Страница 58: ...install a cycling device in series with the flow switch See note 2 for contact rating and wiring specifications 4 To stop unit emergency stop with contacts other than those shown install the stop con...

Страница 59: ...QUANTECH 59 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 Figure 15 Control Wiring Diagram Details Single Circuit Cont d LD22070b 035 20964 103 REV D...

Страница 60: ...le unit on and off automatically with contact shown install a cycling device in series with the flow switch See note 2 for contact rating and wiring specifications 4 To stop unit emergency stop with c...

Страница 61: ...QUANTECH 61 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 Figure 16 Control Wiring Diagram Details Dual Circuit Cont d 035 20880 103 REV C...

Страница 62: ...H 62 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Power options connection diagrams QCC2015C QCC2020C Low sound 200 V 230 V 380 V 460 V and 575 V Figure 17 Power Wiring Single Circuit L...

Страница 63: ...QUANTECH 63 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 Figure 17 Power Wiring Single Circuit Cont d LD22102b 035 21487 102 REV B...

Страница 64: ...QUANTECH 64 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data LD22103a Power options connection diagrams QCC2015C QCC2020C Low sound 380 415 V 3 50 Figure 18 Power Wiring Single Circuit...

Страница 65: ...QUANTECH 65 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 LD22103b 035 21487 105 REV B figure 18 Power Wiring Single Circuit Cont d...

Страница 66: ...CH 66 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Figure 19 Power Wiring Single Circuit QCC2025C QCC2030C Low sound QCC2025C QCC2030C Ultra low sound 460 V and 380 415 V 3 50 LD22104a...

Страница 67: ...QUANTECH 67 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 FIGURE 19 Power Wiring Single Circuit Cont d LD22104b 2 1 12 13 9 7 6 035 21472 102 REV D...

Страница 68: ...QUANTECH 68 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Figure 20 Power Wiring Single Circuit QCC2025C QCC2030C Ultra low sound 200 V 230 V 380 V and 575 V LD22105a 2 1 7 6...

Страница 69: ...QUANTECH 69 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 figure 20 Power Wiring Single Circuit cont d LD22105b 2 1 12 13 9 7 6 035 21585 102 REV C...

Страница 70: ...QUANTECH 70 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data QCC2040C QCC2050C Low sound QCC2040C 070C Ultra low sound 460 V and 380 415 V 50 Hz LD22106a Figure 21 Power Wiring Dual Circuit...

Страница 71: ...QUANTECH 71 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 LD22106b 035 21447 102 REV A Figure 21 Power Wiring Dual Circuit cont d...

Страница 72: ...H 72 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Figure 22 Power Wiring Dual Circuit QCC2060C QCC2070C Low sound QCC2040C QCC2070C Ultra low sound 200 V 230 V 380 V and 575 V LD22107a...

Страница 73: ...QUANTECH 73 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 Figure 22 Power Wiring Dual Circuit cont d LD22107b 2 1 12 13 9 7 6 035 21025 102 REV C...

Страница 74: ...QUANTECH 74 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data QCC2015C QCC2020C Low sound 200 V 230 V 380 V 460 V and 575 V Figure 23 Connection Wiring Single Circuit LD22108a...

Страница 75: ...QUANTECH 75 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 FIGURE 23 Connection Wiring Single Circuit cont d LD22108b 035 21487 404 REV C...

Страница 76: ...QUANTECH 76 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data QCC2015C QCC2020C Low sound 380 415 V 3 50 Figure 24 Connection Wiring Single Circuit LD22109a...

Страница 77: ...QUANTECH 77 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 LD22109b 035 21487 406 REV D figure 24 Connection Wiring Single Circuit cont d...

Страница 78: ...ECH 78 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Figure 25 Connection Wiring Single Circuit QCC2025C QCC2030C Low sound QCC2025C QCC2030C Ultra low sound 460 V and 380 415 V 3 50 LD2...

Страница 79: ...QUANTECH 79 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 Figure 25 Connection Wiring Single Circuit Cont d LD22110b 035 21472 404 REV C...

Страница 80: ...QUANTECH 80 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Figure 26 Connection Wiring Single Circuit QCC2025C QCC2030C Ultra low sound 200 V 230 V 380 V and 575 V LD22111a...

Страница 81: ...QUANTECH 81 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 figure 26 Connection Wiring Single Circuit cont d LD22111b 035 21585 404 REV D...

Страница 82: ...NTECH 82 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data QCC2040C QCC2050C Low sound QCC2040C 070C Ultra low sound 460 V and 380 415 V 50 Hz LD22112a Figure 27 Connection Wiring Dual Circu...

Страница 83: ...QUANTECH 83 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 LD22112b 035 21447 404 REV B figure 27 Connection Wiring Dual Circuit Cont d...

Страница 84: ...TECH 84 Form QCC2 NM1 Issue Date 5 20 2021 Section 5 Technical data Figure 28 Connection Wiring Dual Circuit QCC2060C QCC2070C Low sound QCC2040C 070C Ultra low sound 200 V 230 V 380 V and 575 V LD221...

Страница 85: ...QUANTECH 85 Section 5 Technical data Form QCC2 NM1 Issue Date 5 20 2021 5 Figure 28 Connection Wiring Dual Circuit Cont d LD22113b 035 21586 404 REV B...

Страница 86: ...n unpredictable airflow patterns and possible diminished performance Quantech unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consi...

Страница 87: ...s Suction In 37 7 37 7 6 2 3 9 48 7 48 7 52 7 44 4 53 7 Liquid Out 31 7 31 7 23 1 34 6 72 9 72 9 85 1 85 1 77 6 System 2 Dimensions Suction In 41 6 41 6 35 1 35 1 33 3 Liquid Out 17 3 17 3 14 1 14 1 1...

Страница 88: ...21 Section 5 Technical data Clearances NOTES 1 No obstructions allowed above the unit 2 Only one adjacent wall may be higher than the unit 3 Adjacent units should be 10 ft 3 m apart LD13243 Figure 29...

Страница 89: ...h the isolators and also in the control panel informa tion packet is a drawing and table specifically for each chiller based on the option selection The drawing and table will be similar to the sample...

Страница 90: ...tion 5 Technical data Isolator locations English 60 HZ Model QCC2015CEE QCC2020CEE QCC2025CEE QCC2030CEE Isolator Location Dimensions I1 17 17 17 17 I2 104 2 104 2 113 3 113 3 A 1 1 1 1 1 1 1 1 B 43 3...

Страница 91: ...1D 120 120 1 200 DK YELLOW CP1 1D 175 175 1 170 DK BLUE CP1 1D 250 250 1 400 YELLOW CP1 1D 340 340 1 130 RED CP1 1D 510 510 1 020 BLACK CP1 1D 675 675 1 320 DK PURPLE CP1 1D 900 900 1 020 DK GREEN CP1...

Страница 92: ...elevation 1 4 in maximum difference can be tol erated 4 Bolt or anchor all isolators to supporting structure utilizing base slotted holes C 5 Place equipment on top of isolators making sure that moun...

Страница 93: ...450 1450 1 8 900 2450 TAN 3 6 Y2RSI 2D 1690 1690 1 7 1140 2892 PINK 3 1 Y2RSI 2D 2000N 2000 1 7 1318 3342 PINK BLACK 2 6 Y2RSI 2D 2640N 2640 1 5 1854 4283 PINK GRAY 2 Y2RSI 2D 2870N 3080 1 5 2004 4629...

Страница 94: ...With all shims E in place position equipment on top of plate A of isolator Bolt equipment securely to top plate of isolator using a minimum of 2 5 8 UNC A325 grade 5 SAE bolts or weld equipment or bra...

Страница 95: ...l WR 550 0 5 70 MODEL NUMBER RATED CAPACITY LB RATED DEFLECTION IN DURO 5 RD3 Brown WR 250 0 5 40 RD3 Brick Red WR 525 0 5 50 RD3 Lime WR 750 0 5 60 RD3 Charcoal WR 1100 0 5 70 MODEL NUMBER RATED CAPA...

Страница 96: ...ensuring that all isolator centerlines match the equipment mounting holes The VMC group recommends that the isolator base A be in stalled on a level surface Shim or grout as re quired leveling all is...

Страница 97: ...ure transducers Open the liquid line service valve and oil return line ball valve fully in each system Compressor oil To add oil to a circuit 1 Connect a YORK hand oil pump Part No 470 10654 000 to th...

Страница 98: ...condensing unit OFF ON UNIT switch at the bottom of the keypad is OFF Place the optional circuit breaker handle on the panel door to ON The customer s disconnection devices can now be set to ON Verif...

Страница 99: ...nus 10 3 Program verify the cooling setpoints program setpoints and unit options Record the values in Table 11 see sections on Setpoints and Unit Keys for programming instruction in Table 16 and 17 4...

Страница 100: ...pressure rises and the suc tion pressure decreases If this does not occur the compressor being tested is operating in the reverse direction and must be corrected After verifying prop er compressor rot...

Страница 101: ...oler Superheat should typically be set for no less than 10 F with only a single compressor running on a circuit The superheat is calculated as the difference between the actual temperature of the retu...

Страница 102: ...QUANTECH 102 Form QCC2 NM1 Issue Date 5 20 2021 THIS PAGE IS INTENTIONALLY LEFT BLANK...

Страница 103: ...such as pressure transducers and temperature sensors are connected directly to the Microprocessor Board The Microprocessor Board circuitry multiplexes the ana log inputs digitizes them and scans them...

Страница 104: ...eratures compressor running times and starts option information on the chiller and system setpoints This data is useful for monitoring chiller op eration diagnosing potential problems troubleshoot ing...

Страница 105: ...O L L E D S H U T D O W N The REMOTE CONTROLLED SHUTDOWN mes sage indicates that either an ISN system or RCC has turned the unit OFF not allowing it to run D A I L Y S C H E D U L E S H U T D O W N Th...

Страница 106: ...oard will auto matically unload the affected system by de energizing one compressor The discharge pressure unload will occur when the discharge pressure gets within 15 psig of the programmed discharge...

Страница 107: ...installed for this function to operate S Y S 1 L O W S U C T P R E S S S Y S 2 L O W S U C T P R E S S The Suction Pressure Cutout is a software cutout that helps protect the unit from a coil freeze u...

Страница 108: ...R R When the System Current Feedback option is installed and selected Option 11 under OPTIONS key Current Feedback this safety will operate as follows If the actual feedback voltage of the system pro...

Страница 109: ...lues which may not be the desired operating values Once a faulty battery is detected the unit will be prevented from running until the PRO GRAM key is pressed Once PROGRAM is pressed the anti recycle...

Страница 110: ...le Shutdown Flow Switch Rem Stop No Run Permissive System X Switch Off System X Comps Run System X AR Timer System X AC Timer System X Disch Limiting System X Suction Limiting System X Percentage Load...

Страница 111: ...r the ENTRY section System 2 information will only be dis played for 2 system units With the UNIT TYPE set as a condensing unit via jumper between J11 7 and J11 12 on the I O Board the following list...

Страница 112: ...an be logged before the counter rolls over to 0 L O A D T I M E R 5 8 S E C U N L O A D T I M E R 0 S E C This display of the load and unload timers indicate the time in seconds until the unit can loa...

Страница 113: ...N S T A G E 3 S Y S X A M P S 3 6 0 V O L T S 0 8 The preceding five messages will appear sequentially first for system 1 then for system 2 The first message indicates the system and the associ ated c...

Страница 114: ...erating data printout Pressing the PRINT key and then OPER DATA key al lows the operator to obtain a printout of current system operating parameters When the OPER DATA key is pressed a snapshot will b...

Страница 115: ...internal memory battery backup is built into the circuit board or manual resetting of a fault lock out When the HISTORY key is pressed a printout is trans mitted of all system operating conditions whi...

Страница 116: ...A U L T L O W S U C T P R E S S Displays the type of fault that occurred U N I T T Y P E C O N D E N S I N G U N I T Displays the type of unit Liquid Condensing Unit or Heat Pump A M B I E N T C O N...

Страница 117: ...Setpoint and Range if the unit is programmed for Discharge Air Control S Y S 1 SP X X X X P S I G R A N G E X X X P S I G S Y S 2 SP X X X X P S I G R A N G E X X X P S I G Displays the SP Setpoint a...

Страница 118: ...FEEDBACK ONE PER SYSTEM must be programmed under the OPTIONS key If the microboard is programmed as one CURRENT FEEDBACK ONE PER UNIT under the PROGRAM key the display will be the first dis play befor...

Страница 119: ...d DOWN arrow keys The UP arrow key and DOWN arrow key are also used for programming the control panel such as changing numerical or text values when programming cooling setpoints setting the daily sch...

Страница 120: ...between J11 7 and J11 12 on the I O Board The following are the four possible messages that can be displayed after pressing the COOLING SETPOINT key indicating the cooling mode L O C A L D I S C H A...

Страница 121: ...ts in Suction Pressure Control are the suction pressures of each individual system on the condensing Unit and will control to within plus or minus the cooling range On two system units each system is...

Страница 122: ...CE DAY key will display the Holiday schedule This is a two part display The first reads H O L S T A R T 0 0 0 0 A M S T O P 0 0 0 0 A M The times may be set using the same procedure as de scribed abov...

Страница 123: ...ssor in a system starts The timer begins to count down If all the compressors in the circuit cycle OFF a compressor within the cir cuit will not be permitted to start until the anti recycle timer has...

Страница 124: ...ystem trip volts For individual system high current trip programming on 460 VAC units Add the sum of the compressor and fan RLA s in the system Multiply the sum by 1 25 Divide by 225 A The resulting v...

Страница 125: ...570 psig 22 4 BARG 39 6 BARG 39 3 BARG Suction Pressure Cutout 80 0 psig 120 0 psig 80 0 psig 5 52 BARG 8 27 BARG 5 52 BARG Low Ambient Temp Cutout STANDARD AMBIENT 25 0 F 60 0 F 25 0 F 3 9 C 15 6 C 3...

Страница 126: ...to adv Local Remote Discharge Mon Sun Discharge Air or Suction Pressure Pressure Control Mode Schedule Cutout Display Only Suction Setpoint Holiday Pressure Schedule Cutout Range Remote Setpoint Low A...

Страница 127: ...m Display is similar S Y S 1 S W I T C H O N S Y S 2 S W I T C H O N This allows both systems to run or S Y S 1 S W I T C H O N S Y S 2 S W I T C H O F F This turns system 2 OFF S Y S 1 S W I T C H O...

Страница 128: ...mpe rial units of F or psig or D I S P L A Y U N I T S S I This mode displays system operating values in Scien tific International units of C or BARG Option 7 Lead Lag Type two system units only L E A...

Страница 129: ...U R R E N T F E E D B A C K O N E P E R S Y S T E M This mode should be selected when an optional mod ule is installed to allow individual current monitoring of each system SYS 1 input is to J7 4 to J...

Страница 130: ...the Flash Card input port Turn off the unit switch and set the FLASH CARD UPDATE TO ENABLED using the and keys F L A S H C A R D U P D A T E E N A B L E D Press the ENTER key and the following message...

Страница 131: ...nt that the date and time be correct other wise the daily schedule will not function as desired if programmed In addition for ease of troubleshooting via the History printouts the day time and date sh...

Страница 132: ...for Thermostatic Flash Card Update Remote Temp Reset Ambient Control Standard or Low Local Remote Mode Unit Control Mode DAT or Suct Press Display Units English or Metric System Lead Lag Control Manua...

Страница 133: ...optional suction pressure transducers are installed Discharge pressure limit controls The discharge pressure limit controls unload a system before it reaches a safety limit due to high load or dirty c...

Страница 134: ...pass solenoid is energized only when the lead compressor is running and the DAT is less than SP the Hot Gas Bypass solenoid is turned OFF when the DAT is more than SP CR 2 2 Step 3 is skipped when loa...

Страница 135: ...ion pressure falls below the Setpoint High Limit and greater than the Setpoint Low Limit load ing and unloading do not occur This area of control is called the control range If the suction pressure fa...

Страница 136: ...l the anti recycle timer has timed out If the lead system has run for less than five minutes three times in a row the anti recycle timer will be extended to 10 minutes Anti coincidence timer This time...

Страница 137: ...Diff Press 8M 11M TB7 9 TB10 9 3 4 3 2 FANS FWD OAT 65 F 18 3 C or DP Fan Ctrl On Press 40 psig 2 76 Bars OAT 60 F 15 6 C and DP Fan Ctrl On Press Diff Press 40 psig 2 76 Bars 7M 8M 10M 11M TB7 8 TB7...

Страница 138: ...Press Diff Press 20 psig 1 38 Bars 8M 11M TB7 9 TB10 9 3 FWD 4 FWD 3 2 FANS FWD DP Fan Ctrl On Press 40 psig 2 76 Bars DP Fan Ctrl On Press Diff Press 40 psig 2 76 Bars 8M 9M 11M 12M TB7 9 TB7 10 TB10...

Страница 139: ...he first stage of limiting is either 80 66 or 50 depending on the number of compressors on the unit The second stage of limit ing is either 40 or 33 and is only available on 3 5 and 6 compressor units...

Страница 140: ...set Value 20 F 11 11 C Input Signal 6VDC English Reset 6VDC x 20 F 12 F Reset 10 New Setpoint 45 F 12 F 57 F Metric Reset 6VDC x 11 11 C 6 67 C Reset 10 New Setpoint 7 22 C 6 67 C 13 89 C Max Reset Va...

Страница 141: ...display as the LLSV is energized Ener gizing and de energizing outputs may be useful during troubleshooting Section 9 Service and troubleshooting Clearing history buffers The history buffers may be cl...

Страница 142: ...lated run and start timers for each system All values can also be changed using the UP and DOWN arrow keys but under normal circumstances would not be required or advised After the last start display...

Страница 143: ...gle Sys No Jumper Two Sys J13 8 CR1 Sys 1 Motor Protector High Pressure Cutout J13 10 CR2 Sys 2 Motor Protector High Pressure Cutout Table 24 I O Digital Outputs TB7 2 SYS 1 Compressor 1 TB7 3 SYS 1 L...

Страница 144: ...144 Form QCC2 NM1 Issue Date 5 20 2021 Section 9 Service and troubleshooting Figure 41 Microboard Layout TB5 TB1 TB6 TB7 TB8 TB9 TB10 J14 J13 J12 J15 J11 J10 J9 J8 J7 J6 J5 J3 I O BOARD IPU BOARD JP1...

Страница 145: ...y voltages of 24 36 VDC could be measured for the DC voltage on the digital inputs This voltage is in reference to ground The unit case should be suffi cient as a reference point when measuring digita...

Страница 146: ...play would be zero The suction pressure transducers are standard on all QCC2s The suction pressure transducers have a range of 0 to 400 psig The output will be linear from 0 5 VDC to 4 5 VDC over the...

Страница 147: ...to transducer J9 11 VDC input signal to the microboard See the formula above for voltage readings that correspond to specific discharge pressures J9 7 5 VDC return J9 2 drain shield connection 0 VDC...

Страница 148: ...o the respective output connection energizing contactors evaporator heater and solenoids according to the operating sequence see Figure 42 on page 148 120 VAC is supplied to the I O board via connecti...

Страница 149: ...for YORK is P N 950915576 The cable to connect the printer can either be locally assembled from the parts listed or ordered directly from WEIGH TRONIX under part number 287 040018 Parts The following...

Страница 150: ...ving switch is installed according to manufacturer s instructions 3 Defective Air Proving switch 3 Replace Air Proving switch 4 Remote cycling device open 4 Check cycling devices connected to terminal...

Страница 151: ...1 No problem Consult Installation Manual to aid in understanding compressor operation and capacity control 2 Defective water temperature sensor 2 Compare the display with a thermometer Should be withi...

Страница 152: ...QUANTECH 152 Form QCC2 NM1 Issue Date 5 20 2021 THIS PAGE IS INTENTIONALLY LEFT BLANK...

Страница 153: ...analyzed If contaminants are present the system must be cleaned to prevent compressor failure Never use the scroll compressor to pump the refrigerant system down into a vacuum Doing so will cause int...

Страница 154: ...B2 1 Network 1 to TB2 1 RS 232 connect to TB3 Network RX to TB3 TXD Network TX to TB3 RXD Network GND to TB3 GND See Figure 44 on page 155 for TB1 TB2 and TB3 locations In most cases communication par...

Страница 155: ...800 4800 1200 4800 9600 19200 38400 76800 AUTO SELECTABLE P2 BAUD RATE 1200 57600 1200 1200 4800 9600 19200 38400 57600 SELECTABLE P1 P2 MANUAL Mac ADDRESS 1 127 1 P1 P2 PARITY NONE IGNORE NONE NONE E...

Страница 156: ...equired by network 2or other as required by network 3number is multiplied by 100 set as required by network 4number is added to DE MODIFIER ADDRESS set as required by network 5unit operating software...

Страница 157: ...Y POINTS This data can be read using a BACnet or Modbus net work connection and can NOT be modified using this connection The Modbus Register Address for these points is 1281 BI Refer to Table 33 for...

Страница 158: ...P AI10 523 03 04 x10 ADF 17 F C Sys 1 Cooler Inlet Refrigerant Temp R 407c O O O 21 S1_DEF_TEMP AI11 524 03 04 x10 ADF 18 F C Sys 1 Defrost Temperature HP O O O 22 S1_EEV_OUT AI12 525 03 04 x10 ADF 19...

Страница 159: ...60 S2_DSCH_TEMP AI50 563 03 04 x10 ADF 57 F C Sys 2 Discharge Temperature EEV O O O 61 S2_DSCH_SH AI51 564 03 04 x10 ADF 58 F diff C diff Sys 2 Discharge Superheat EEV O O O 62 LEAVING_HOT AI52 565 03...

Страница 160: ...ata Type Supported Modbus Scaling See Note 5 N2 Metasys Engineering Units Point List Code S Standard O Optional N Not Available NOTES Units have Native BACnet MS TP Modbus RTU and N2 communications No...

Страница 161: ...ure Unit Switch OFF System Switch OFF Low Suction Pressure System Fault Remote Shutdown Daily Schedule Shutdown No Run Permissive No Cool Load Anti Coincidence Timer Active Load Limiting Compressor s...

Страница 162: ...trol values Table 35 YorkTalk 2 Communications Data Map lists the control parameters These values are found un der feature 54 in the MicroGateway or E Link Transmitted data After receiving a valid tra...

Страница 163: ...5 SNVT_count_f 51 ADF 9 0009 x10 F C Sys 1 Suction Temperature EEV O O O O O P16 AV10 YT2_ S01_ P16 nvoYTS01p016 SNVT_count_f 51 ADF 10 0010 x10 F C Ambient Air Temperature S S S S S P17 AV11 YT2_ S01...

Страница 164: ...8 BV17 YT2_ S01_ P48 nvoYTS01p048 SNVT_switch 95 BD 17 0077 N A 0 1 0 1 Sys 1 Comp 3 Run S S S S S P49 BV18 YT2_ S01_ P49 nvoYTS01p049 SNVT_switch 95 BD 18 0078 N A 0 1 0 1 Sys 2 Comp 3 Run S S S S S...

Страница 165: ...O O O O P77 AV41 YT2_ S01_ P77 nvoYTS01p077 SNVT_count_f 51 ADF 41 0051 x10 F diff C diff Sys 1 Discharge Superheat EEV O O O O O P78 AV42 YT2_ S01_ P78 nvoYTS01p078 SNVT_count_f 51 ADF 42 0052 x10 F...

Страница 166: ...N N N P26 AV124 YT2_ S02_ P26 nvoYTS02p026 SNVT_count_f 51 ADF 63 0120 N N N N N P27 AV125 YT2_ S02_ P27 nvoYTS02p027 SNVT_count_f 51 ADF 64 0121 x1 None None Sys 2 Comp 1 Run Hours N S S S S P28 AV1...

Страница 167: ...SNVT_count_f 51 ADF 76 0143 N N N N N P70 AV134 YT2_ S02_ P70 nvoYTS02p070 SNVT_count_f 51 ADF 77 0144 N N N N N P71 AV135 YT2_ S02_ P71 nvoYTS02p071 SNVT_count_f 51 ADF 78 0145 N N N N N P72 AV136 YT...

Страница 168: ...o Cool Load High Ambient Temperature Anti Vacuum Low Pressure Cutout Anti Recycle Timer Active Manual Override Suction Limiting Discharge Limiting Flow Switch Open Load Limiting Compressor s Running H...

Страница 169: ...9 78 172 4 196 91 1 80 176 200 93 3 82 179 6 204 95 6 84 183 2 208 97 8 86 186 8 212 100 0 88 190 4 216 102 2 90 194 220 104 4 92 197 6 224 106 7 94 201 2 228 108 9 96 204 8 232 111 1 98 208 4 236 11...

Страница 170: ...0 41 20 28 125 43 22 26 130 45 24 24 135 47 26 20 140 49 28 18 145 51 30 16 150 53 32 14 160 57 34 12 170 60 36 10 180 64 38 8 190 67 40 6 200 70 42 4 210 73 44 3 220 76 46 2 225 78 48 0 235 80 50 1 2...

Страница 171: ...QUANTECH 171 Form QCC2 NM1 Issue Date 5 20 2021 Notes...

Страница 172: ...Copyright by Quantech 2021 www quantech hvac com Subject to change without notice Printed in USA Form QCC2 NM1 521 ALL RIGHTS RESERVED Issue Date May 20 2021 Supersedes QCC2 NM1 1220...

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