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Carrier WeatherMaker 48TC A/B07 Series, Руководство по установке

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Carrier WeatherMaker 48TC A/B07 Series Скачать руководство пользователя страница 38

38

HUMIDI-MIZER

®

 CONTROL CONNECTIONS

Humidi-MiZer – Space RH Controller

NOTE: The Humidi-MiZer is a factory installed option.

The  Humidi-MiZer  dehumidification  system  requires  a  field-

supplied and field-installed space relative humidity control de

-

vice. This device may be a separate humidistat control (contact

closes on rise in space RH above control set point) or a combina

-

tion  thermostat-humidistat  control  device  such  as  Carrier’s

Edge® Pro Thermidistat with isolated contact set for dehumidi

-

fication control (see Fig. 67 and 68). The humidistat is normally

used in applications where a temperature control is already pro

-

vided (units with PremierLink™ control).

To Connect the Carrier Humidistat (HL38MG029) for 

Sizes 07-14:

1. Route  the  humidistat  2-conductor  cable  (field-supplied)

through the hole provided in the unit corner post.

2. Feed wires through the raceway built into the corner post

(see Fig. 63) to the 24-v barrier located on the left side of

the  control  box.  The  raceway  provides  the  UL-required

clearance between high-voltage and low-voltage wiring.

3. Use wire  nuts  to  connect  humidistat cable  to  two  PINK

leads in the low-voltage wiring as shown in Fig. 69.

To Connect the Carrier Humidistat (HL38MG029) for 

Sizes 16:

1. Route  the  humidistat  2-conductor  cable  (field-supplied)

through the bushing the unit’s louvered end panel.

2. Route the cable through the snap-in wire tie and up to the

web bushing near the control box.

3. Feed the  cable through the  bushing and  into the  bottom

left side of the control box after removing one of the two

knockouts in the corner of the box. Use a connector to pro

-

tect the cable as it enters the control box.

4. Use the connector and the wire tie to reduce any slack in

the humidistat cable to ensure that it will not be damaged

by contact with the condenser coil.

5. Use wire  nuts  to  connect  humidistat cable  to  two  PINK

leads in the low-voltage wiring as shown in Fig. 70.

To connect the Thermidistat device (33CS2PPRH-01) for 

Size 07-14:

1. Route the Thermidistat multi-conductor thermostat cable

(field-supplied) through the hole provided in the unit cor

-

ner post.

2. Feed wires through the raceway built into the corner post

(see Fig. 63) to the 24-v barrier located on the left side of

the  control  box.  The  raceway  provides  the  UL-required

clearance between high-voltage and low-voltage wiring.

3. The Thermidistat has dry contacts at terminals D1 and D2

for dehumidification operation (see Fig. 71). The dry con

-

tacts must be wired between CTB terminal R and the PINK

lead  to  the  LTLO  switch  with  field-supplied  wire  nuts.

Refer to the installation instructions included with the Car

-

rier Edge Thermidistat device for more information.

To connect the Thermidistat device (33CS2PPRH-01) for 

Size 16:

1. Route the Thermidistat multi-conductor thermostat cable

(field-supplied)  through  the  bushing  the  unit’s  louvered

end panel.

2. Route the cable through the snap-in wire tie and up to the

web bushing near the control box.

3. Feed the  cable through the  bushing and  into the  bottom

left side of the control box after removing one of the two

knockouts in the corner of the box. Use a connector to pro

-

tect the cable as it enters the control box.

4. Use the connector and the wire tie to reduce any slack in

the thermostat cable to ensure that it will not be damaged

by contact with the condenser coil.

5. The Thermidistat has dry contacts at terminals D1 and D2

for dehumidification operation (see Fig. 71). The dry con

-

tacts must be wired between CTB terminal R and the PINK

lead  to  the  LTLO  switch  with  field-supplied  wire  nuts.

Refer to the installation instructions included with the Car

-

rier Edge Thermidistat device for more information.

Fig. 67 — 

Accessory Field-Installed Humidistat

Fig. 68 — 

Edge

®

 Pro Thermidistat

Low Ambient Control (Factory Option)

If the unit comes with Electro-Mechanical (EM) control, then no

adjustment is necessary. If the unit comes with PremierLink

™

 or

RTU  Open  control  option,  then  refer  to  its  installation  control

manual for details on adjusting “Cooling Lock-Out” setting and

configure for your specific job requirements.

% RELATIVE HUMIDITY

®

Содержание WeatherMaker 48TC A/B07 Series

Страница 1: ...VENIENCE OUTLETS ALL UNITS FACTORY OPTION THRU BASE CONNECTIONS ELECTRICAL CONNECTIONS SIZE 07 14 FACTORY OPTION THRU BASE CONNECTIONS ELECTRICAL CONNECTIONS SIZE 16 HUMIDI MIZER CONTROL CONNECTIONS EconoMi er X Factory Installed Option 41 PRODUCT DESCRIPTION SYSTEM COMPONENTS SPECIFICATIONS INPUTS OUTPUTS ENVIRONMENTAL ECONOMIZER MODULE WIRING DETAILS S BUS SENSOR WIRING CO2 SENSOR WIRING INTERFA...

Страница 2: ... to pressure greater than 0 5 psig it must be replaced before use When pressure testing field supplied gas piping at pressures of 0 5 psig or less a unit connected to such piping must be isolated by closing the man ual gas valve s DANGER ELECTRICAL SHOCK HAZARD Failure to follow this warning will result in personal injury or death Before performing service or maintenance operations on unit turn of...

Страница 3: ...tened and 1 8 in NPT pipe plug must be installed to prevent gas leaks CAUTION PERSONAL INJURY HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling parts and servicing air conditioning equipment WARNING FIRE OR EXPLOSION HAZARD Failure to follow th...

Страница 4: ...l Al Cu Cu J Al Al E coat Al Cu K E coat Al Al Al Cu L E coat Al Al E coatAl Cu T Al Al Al Cu Louvered Hail Guard U Al Al Cu Cu Louvered Hail Guard V Al Al E coat Al Cu Louvered Hail Guard W E coat Al Al Al Cu Louvered Hail Guard X E coat Al Al E coat Al Cu Louvered Hail Guard Voltage 1 575 3 60 3 208 230 1 60 5 208 230 3 6 460 3 60 Design Revision Factory Design Revision Base Unit Controls 0 Elec...

Страница 5: ...5 Fig 2 Dimensional Drawing for Units Built On and After 4 15 19 Size 07 ...

Страница 6: ...6 Fig 3 Dimensional Drawing for Units Built Prior To 4 15 19 Size 07 ...

Страница 7: ...7 Fig 4 Unit Corner Weights and Clearances Size 07 ...

Страница 8: ...8 Fig 5 Base Rail Details Size 07 ...

Страница 9: ...9 Fig 6 Thru the Base Charts Size 07 ...

Страница 10: ...10 Fig 7 Unit Dimensional Drawing Size 08 09 12 ...

Страница 11: ...11 Fig 7 Unit Dimensional Drawing Size 08 09 12 ...

Страница 12: ...12 Fig 8 Unit Dimensional Drawing Size 14 ...

Страница 13: ...13 Fig 8 Unit Dimensional Drawing Size 14 cont ...

Страница 14: ...14 Fig 9 Unit Dimensional Drawing Size 16 ...

Страница 15: ...15 Fig 9 Unit Dimensional Drawing Size 16 cont ...

Страница 16: ...es 07 14 only locate mechanical draft system flue assem bly at least 4 ft 1 2 m from any opening through which combus tion products could enter the building and at least 4 ft 1 2 m from any adjacent building or per local code Locate the flue as sembly at least 10 ft 3 05 m from an adjacent unit s fresh air in take hood if within 3 ft 0 91 m of same elevation or per local code When unit is located ...

Страница 17: ...nsions are shown in Fig 12 14 Assemble and install accessory roof curb in accordance with instructions shipped with the curb Curb should be level This is necessary for unit drain to function properly Unit leveling toler ances are shown in Fig 11 Refer to Accessory Roof Curb Instal lation Instructions for additional information as required Fig 11 Unit Leveling Tolerances NOTE The gasketing of the u...

Страница 18: ...UTHORIZATION OF CARRIER CORPORATION 1 DEC 2 DEC 3 DEC ANG MATERIAL AUTHORIZATION NUMBER TITLE 1041738 CURB ASY ROOF ENGINEERING 004 007 ENGINEERING REQUIREMENTS SIZE DRAWING NUMBER REV T 005 Y 002 DRAFTER CHECKER D 48TC400427 B WEIGHT MMC 06 17 11 SHEET 5 OF 5 SURFACE FINISH MFG PURCH MODEL INTERNAL USE ONLY NEXT DRAWING SCALE DISTRIBUTION PURCH N A MMC NOTES 1 ROOFCURB ACCESSORY IS SHIPPED DISASS...

Страница 19: ...RT WITHOUT THE WRITTEN AUTHORIZATION OF CARRIER CORPORATION 1 DEC 2 DEC 3 DEC ANG MATERIAL AUTHORIZATION NUMBER TITLE 1029120 CURB ASY ROOF ENGINEERING MANUFACTURING ENGINEERING REQUIREMENTS SIZE DRAWING NUMBER REV T 005 Y 002 DRAFTER CHECKER D 50HJ405012 C WEIGHT MMC 12 16 09 SHEET 5 OF 5 SURFACE FINISH MFG PURCH MODEL INTERNAL USE ONLY NEXT DRAWING SCALE DISTRIBUTION PURCH N A NOTES 1 ROOFCURB A...

Страница 20: ...20 Fig 14 48TC 16 Roof Curb Details ...

Страница 21: ... size units size 16 units do not require spreader bars Rollers may be used to move unit across a roof Level by using unit frame as a reference See Table 2 and Fig 15 for additional information Lifting holes are provided in base rails as shown in Fig 15 Refer to rigging instructions on unit Rigging materials under unit cardboard or wood to prevent base pan damage must be removed PRIOR to placing th...

Страница 22: ...e po sitioned as shown in Fig 16 Maintain the 151 2 in 394 mm and 85 8 in 220 mm clearances and allow the 225 16 in 567 mm di mension to float if necessary Fig 16 Retrofit Installation Dimensions Size 16 Shown If the alternative condensate drain location through the bottom of the unit is used in conjunction with a retrofit curb the hole in the curb must be moved 12 5 in 320 mm towards the duct end...

Страница 23: ...o the flanges Insulate and weatherproof all external ductwork joints and roof or build ing openings with counter flashing and mastic in accordance with applicable codes Do not cover or obscure visibility to the unit s informative data plate when insulating horizontal ductwork Fig 18 Horizontal Conversion Panels Fig 19 Location of Notches Fig 20 Horizontal Duct Panels In Place IMPORTANT If the unit...

Страница 24: ...hed to the damper using two plastic tie wraps 2 To gain access to the hood remove the filter access panel See Fig 21 3 Locate the 2 screws holding the metal tray to the basepan and remove Locate and cut the 2 plastic tie wraps securing the assembly to the damper see Fig 22 Be careful to not damage any wiring or cut tie wraps securing any wiring The indoor coil access panel will be used as the top ...

Страница 25: ...ch hood side The hood divider is also used as the bottom filter rack for the aluminum filter 5 Open the filter clips which are located underneath the hood top Insert the aluminum filter into the bottom filter rack hood divider Push the filter into position past the open fil ter clips Close the filter clips to lock the filter into place See Fig 26 Fig 24 Indoor Coil Access Panel Relocation Size 07 ...

Страница 26: ...for gas burning appliances This unit is factory equipped for use with natural gas NG fuel at elevations up to 2000 ft 610 m above sea level Unit may be field converted for operation at elevations above 2000 ft 610 m and or for use with liquefied petroleum LP fuel See ac cessory kit installation instructions regarding these accessories NOTE Furnace gas input rate on rating plate is for installation...

Страница 27: ...uctions for details on these installation methods Observe clearance to gas line components per Fig 32 Fig 32 Gas Piping Guide with Accessory Thru the Curb Service Connections FACTORY OPTION THRU BASE CONNECTIONS GAS CONNECTIONS SIZES 07 14 This service connection kit consists of a 1 2 in NPT gas adapter fitting brass a 1 2 in electrical bulkhead connector and a 3 4 in electrical bulkhead connector...

Страница 28: ...nd discard the wire tie on the gas fitting Hand tighten the fitting if it has loosened in transit 3 Remove connector plate assembly from the L bracket and discard the L bracket but retain the washer head screws and the gasket located between the L bracket and the connector plate assembly NOTE Take care not to damage the gasket as it is reused in the following step 4 Place the gasket over the embos...

Страница 29: ...oes not block access to the unit s main control box or limit the required working space in front of the control box Fig 40 Gas Piping with Thru Curb Accessory Fig 41 Gas Piping with Thru Curb Accessory Alternate Layout Fig 42 Gas Piping Thru Base Connections When installing the gas supply line observe local codes pertaining to gas pipe installations Refer to the NFPA 54 ANSI Z223 1 NFGC latest edi...

Страница 30: ...a trap at least 4 in 102 mm deep and protect against freeze up If drain line is installed downstream from the external trap pitch the line away from the unit at 1 in per 10 ft 25 mm in 3 m of run Do not use a pipe size smaller than the unit connection 3 4 in Step 12 Make Electrical Connections NOTE Field supplied wiring shall conform with the limitations of minimum 63 F 33 C rise FIELD POWER SUPPL...

Страница 31: ...is provided wrapped around compressor A second conduit is provided with factory installed powered conve nience outlet For those units that require conduit larger than 1 in it must be field supplied Fig 48 and 49 show the wire routings If the field disconnect is larger than 100A it must be attached to the unit using accessory CRDISBKT001A00 disconnect switch bracket see Fig 50 Follow the instructio...

Страница 32: ...n necting field power wires to unit connection points Make field power connections directly to line connection pressure lugs only Fig 52 Disconnect Switch and Unit UNITS WITH FACTORY INSTALLED NON FUSED DIS CONNECT The factory installed optional non fused disconnect NFD switch is located in a weatherproof enclosure located under the main con trol box The manual switch handle and shaft are shipped ...

Страница 33: ...aft into the handle socket re install 3 hex screws on the NFD enclosure 12 Re install the unit front panel Fig 55 Handle and Shaft Assembly for NFD Sizes 07 14 Fig 56 Handle and Shaft Assembly for NFD Size 16 UNITS WITHOUT FACTORY INSTALLED NON FUSED DISCONNECT When installing units provide a disconnect switch per NEC Na tional Electrical Code of adequate size Disconnect sizing data is provided on...

Страница 34: ...ro mechanical controls the weatherproof cover kit is shipped in the unit s control box The kit includes the hinged cover a backing plate and gasket On units with a factory installed direct digital controller PremierLink or RTU Open the weath erproof cover kit is secured to the basepan underneath the control box See Fig 59 Disconnect All Power To Unit and Convenience Outlet Lock Out and Tag Out All...

Страница 35: ... the bottom of the disconnect box For the load side wiring to the factory option disconnect route the wires through the hole on the right side of the disconnect Be sure to create a drip loop at least 6 inches long ALL UNITS Test the GFCI receptacle by pressing the TEST button on the face of the receptacle to trip and open the receptacle Check for proper grounding wires and power line phasing if th...

Страница 36: ...quivalent single leads of different colors with minimum of seven leads see Fig 62 If the thermostat does not require a 24 v source no C connection required use a thermostat cable or equivalent with minimum of six leads Check the thermostat installation instructions for addi tional features which might require additional conductors in the cable For wire runs up to 50 ft 15 m use no 18 AWG Ameri can...

Страница 37: ...e Cooling Heating ther mostat according to installation instructions included with the ac cessory If using an electronic thermostat configure it for non heat pump operation Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in ac cordance with the thermostat installation instructions If the thermostat contains a logic circuit requiring 24 v power ...

Страница 38: ...vice 33CS2PPRH 01 for Size 07 14 1 Route the Thermidistat multi conductor thermostat cable field supplied through the hole provided in the unit cor ner post 2 Feed wires through the raceway built into the corner post see Fig 63 to the 24 v barrier located on the left side of the control box The raceway provides the UL required clearance between high voltage and low voltage wiring 3 The Thermidista...

Страница 39: ...39 Fig 69 48TC 07 14 Typical Humidi MiZer Adaptive Dehumidification System Humidistat Wiring ...

Страница 40: ...40 Fig 70 48TC 16 Typical Humidi MiZer Adaptive Dehumidification System Humidistat Wiring ...

Страница 41: ...and either a 20k outdoor air temperature sensor or S Bus enthalpy sensors Economizer Module The module is the core of the EconoMi er X system The module is mounted in the unit s control box and includes the user inter face for the system The W7220 economizer module provides the basic inputs and outputs to provide simple economizer control When used with the optional sensors the economizer module p...

Страница 42: ...hree 3 S Bus sensors may be connected to the W7220 economizer module For outdoor air OA return air RA and discharge supply air DA 4 Binary Inputs 1 wire 24 vac common GND see page 44 for wiring details 24 vac power supply 20 to 30 vac 50 60Hz 100 VAClass 2 transformer OUTPUTS Actuator Signal 2 10 vdc minimum actuator impedance is 2k ohm bus two wire output for bus communicating actuators Exhaust f...

Страница 43: ...AT 20k NTC and COM Mixed Air Temperature Sensor Polarity Insensitive Connection OAT OAT 20k NTC and COM Outdoor Air Temperature Sensor Polarity Insensitive Connection S BUS S BUS S BUS Sylk Bus Enthalpy Control Sensor Polarity Insensitive Connection Bottom Left Terminal Block IAQ 2 10 2 10 vdc Air Quality Sensor Input e g CO2 sensor IAQ COM COM Air Quality Sensor Common IAQ 24V 24 vac Air Quality ...

Страница 44: ...o return to the current menu parameter 10 Press the Menu Up Exit button to return to the previ ous menu MENU STRUCTURE Table 12 illustrates the complete hierarchy of menus and parame ters for the EconoMi er X system The Menus in display order are STATUS SET POINTS SYSTEM SETUP ADVANCED SETUP CHECKOUT ALARMS NOTE Some parameters in the menus use the letters MA or MAT indicating a mixed air temperat...

Страница 45: ... of outdoor air temperature Displays _ _ _F if sensor sends invalid value short or out of range OA HUM _ _ 0 to 100 OUTSIDE AIR RELATIVE HUMIDITY Displays measured value of outdoor humidity from OA sensor Displays _ _ if not connected short or out of range RA TEMP _ _ _ F 0 F to 140 F 18 C to 60 C RETURN AIR TEMPERATURE Displays measured value of return air temperature from RAT sensor Displays _ _...

Страница 46: ... dampers controlled by CFM 100 to 9990 cfm increment by 10 If OA MA RA and CO2 sensors are connected and DCV CAL ENABLE is set to AUTO mode the OA dampers are controlled by CFM and displays from 100 to 9990 CFM 2 to 10 vdc With 2 speed fan units VENTMIN L low speed fan and MIN POS H high speed fan settings are required Default for VENTMIN L is 3 2V and VENTMIN H is 2 8V ERV OAT SP 32 F 0 F to 50 F...

Страница 47: ...nsor OA H CAL 0 RH 10 RH OUTSIDE AIR HUMIDITY CALIBRATION Allows for operator to adjust for an out of calibration humidity sensor RA T CAL 0 0 F 2 5 F RETURN AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration temperature sensor RA H CAL 0 RH 10 RH RETURN AIR HUMIDITY CALIBRATION Allows for operator to adjust for an out of calibration humidity sensor DA T CAL 0 ...

Страница 48: ...led or become disconnected check wiring then replace sensor if the alarm continues RA SYLK H ERR N A N A DA SYLK T ERR N A N A DISCHARGE AIR S BUS SENSOR ERROR Discharge air sensor has failed or become disconnected check wiring then replace sensor if the alarm continues OA SENS T ERR N A N A OUTSIDE AIR TEMPERATURE SENSOR ERROR Outdoor air temperature sensor has failed or become disconnected check...

Страница 49: ...CUPIED NONE NO OFF OFF HIGH 0v Off 0v Off MIN POS Closed ON OFF HIGH 24v On 0v Off MIN POS Closed ON ON HIGH 24v On 24v On MIN POS Closed YES OFF OFF HIGH 0v Off 0v Off MIN POS Closed ON OFF HIGH 0v Off 0v Off MIN POS to Full Open Closed to Full Open ON ON HIGH 24v On 0v Off MIN POS to Full Open Closed to Full Open DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED...

Страница 50: ...IGH 24v On 0v Off MIN POS to Full Open Closed to Full Open DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 Set No OFF OFF HIGH 0v Off 0v Off VENTMIN Closed ON OFF HIGH 24v On 0v Off VENTMIN Closed ON ON HIGH 24v On 24v On VENTMIN Closed Yes OFF OFF HIGH 0v Off 0v Off VENTMIN Closed ON OFF HIGH 0v Off 0v Off VENTMIN to Full...

Страница 51: ...ON ON HIGH 24v On 24v On VENTMIN to VENTMAX Closed Yes OFF OFF LOW 0v Off 0v Off VENTMIN to VENTMAX Closed ON OFF LOW 0v Off 0v Off VENTMIN to Full Open Closed to Full Open ON ON HIGH 24v On 0v Off VENTMIN to Full Open Closed to Full Open DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED NO CO2 SENSOR NO OFF OFF LOW 0v Off 0v Off MIN ...

Страница 52: ...W7220 does not control the supply directly but uses the following input status to determine the speed of the supply fan and controls the OAdamper to the required posi tion see Table 23 Table 23 Fan Speed The W heating mode is not controlled by the W7220 but it re quires the status to know where to position the OA damper for minimum position for the fan speed The 2 speed fan delay is available when...

Страница 53: ...can all be performed at the time of installation or at any time during the operation of the system as a test that the system is operable TROUBLESHOOTING Alarms The economizer module provides alarm messages that display on the 2 line LCD NOTE Upon power up the module waits 60 minutes before checking for alarms This allows time for all the configured devic es e g sensors actuator to become operation...

Страница 54: ...rn air smoke detectors require a relocation of the sensor module at unit installation See Fig 78 for the as shipped location COMPLETING INSTALLATION OF RETURN AIR SMOKE SENSOR 1 Unscrew the two screws holding the return air smoke detector assembly See Fig 79 Step 1 2 Save the screws 3 Turn the assembly 90 degrees and then rotate end to end Make sure that the elbow fitting is pointing down See Fig ...

Страница 55: ...nsor DDC interface PremierLink controller Louvered hail guard Motormaster head pressure controls Phase monitor control Refer to separate installation instructions for information on in stalling these accessories Step 15 Check Belt Tension Measure the belt span length as shown in Fig 81 Calculate the re quired deflection by multiplying the belt span length by 1 64 For example if the belt span lengt...

Страница 56: ...130 in lbs SET SCREW SET SCREW STRAIGHT EDGE BELT SPAN BELT DEFLECTION FORCE SEE TABLE 1 DEFLECTION BELT SPAN 64 Table 1 Table 2 BELT CROSS SECTION SMALLEST SHEAVE DIAMETER BELT DEFLECTION FORCE LBS UNNOTCHED BELTS NOTCHED BELTS USED NEW USED NEW A AX 3 0 3 6 3 7 5 5 4 1 6 1 3 8 4 8 4 5 6 8 5 0 7 4 5 0 7 0 5 4 8 0 5 7 8 4 B BX 3 4 4 2 4 9 7 2 4 4 5 6 5 3 7 9 7 1 10 5 5 8 8 6 6 3 9 4 8 5 12 6 BELT ...

Страница 57: ...57 Fig 83 Ultra Tech Scroll Compressor Diagram ...

Страница 58: ...ight to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53480257 01 Printed in U S A Form 48TC 7 16 02SI Pg 58 5 2020 Replaces 48TC 7 16 01SI 2020 Carrier ...

Страница 59: ...eck gas piping for leaks Y N _____ Check that indoor air filters are clean and in place Y N _____ Check that outdoor air inlet screens are in place Y N _____ Verify that unit is level Y N _____ Check fan wheels and propeller for location in housing orifice and verify setscrew is tight Y N _____ Verify that fan sheaves are aligned and belts are properly tensioned Y N _____ Verify that scroll compre...

Страница 60: ..._____ F D Liquid line temperature at outlet or reheat coil _______________ F E Confirm correct rotation for compressor Y N _____ F Check for correct ramp up of outdoor fan motor as condenser coil warms Y N _____ 4 Check unit charge per charging chart Y N _____ Jumper 32L Motormaster temperature sensor during this check Remove jumper when complete 5 Switch unit to high latent mode sub cooler by clo...

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