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Carrier WeatherMaster 50GC 04-06 Series, Installation Instructions Manual

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Carrier WeatherMaster 50GC 04-06 Series Installation Instructions Manual Download Page 44

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500269-01

Printed in U.S.A.

Form 50GC-4-6-03SI

Pg CL-2

12-19A

12-19

Replaces: 50GC-4-6-02SI

© 2019 Carrier Corporation

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CUT ALON

G 

DOTT

E

D

 LINE

CU

T ALONG DOTTED LINE

PRESSURES

Refrigerant Suction

CIRCUIT A _____________ PSIG 
CIRCUIT B _____________ PSIG

Refrigerant Discharge 

CIRCUIT A _____________ PSIG 
CIRCUIT B _____________ PSIG

Verify Refrigerant Charge using Charging Charts (Y/N) _____

GENERAL

Economizer minimum vent and changeover settings to job requirements (if equipped) (Y/N) _____
Verify smoke detector unit shutdown by utilizing magnet test (Y/N) _____

IV. HUMIDI-MIZER

®

 START-UP

STEPS

1. Check UCB for jumper 1, 2, 3 (Jumper 1, 2, 3 must be cut and open) (Y/N) _____
2. Open humidistat contacts (Y/N) _____
3. Start unit In cooling (Close Y1) (Y/N) _____

OBSERVE AND RECORD

A. Suction pressure 

_______________ PSIG

B. Discharge pressure 

_______________ PSIG

C. Entering air temperature 

_______________ ° 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. Switch unit to high-latent mode (sub-cooler) by closing humidistat with Y1 closed (Y/N) _____
5. Check unit charge per charging chart (Y/N) _____

OBSERVE

A. Reduction in suction pressure (5 to 7 psi expected) (Y/N) _____
B. Discharge pressure unchanged (Y/N) _____
C. Liquid temperature drops to 50°F to 55°F range (Y/N) _____
D. LSV solenoid energized (valve closes) (Y/N) _____

6. Switch unit to dehumid (reheat) by opening Y1 (Y/N) _____

OBSERVE

A. Suction pressure increases to normal cooling level
B. Discharge pressure decreases (35 to 50 psi) (Limited by head pressure control)
C. Liquid temperature returns to normal cooling level
D. LSV solenoid energized (valve closes)
E. DSV solenoid energized, valve opens

7. With unit in dehumid mode close W1 compressor and outdoor fan stop; LSV and DSV solenoids de-energized (Y/N) _____
8. Open W1 restore unit to dehumid mode (Y/N) _____
9. Open humidistat input compressor and outdoor fan stop; LSV and DSV solenoids de-energized (Y/N) _____

10. Restore setpoints for thermostat and humidistat (Y/N) _____

Summary of Contents for WeatherMaster 50GC 04-06 Series

Page 1: ...FAN OPERATION 2SP H C AND 3 SPEED FAN OPERATION CHECKOUT TROUBLESHOOTING RTU Open Controller Factory Option 35 SystemVu Controller Factory Option 35 Controller Options 35 LOW AMBIENT Smoke Detectors 3...

Page 2: ...uld cause personal injury death and or equipment damage R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on R 410A refr...

Page 3: ...installed W7212 EconoMi er IV Non Fault Detection and Diagnostic 2 RTU Open Multi Protocol Controller 3 SystemVu Controller 6 Electro mechanical can be used with W7220 EconoMi er X with Fault Detecti...

Page 4: ...4 Fig 2 50GC 04 06 Unit Dimensional Drawing...

Page 5: ...5 Fig 2 50GC 04 06 Unit Dimensional Drawing cont...

Page 6: ...6 Fig 2 50GC 04 06 Unit Dimensional Drawing cont...

Page 7: ...ions 9 Install other accessories PAD MOUNTED INSTALLATION 1 Prepare pad and unit supports 2 Check and tighten the bottom condensate drain connection plug 3 Rig and place unit 4 Convert unit to side du...

Page 8: ...ENGINEERING MANUFACTURING 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...

Page 9: ...using unit frame as a refer ence See Table 2 on page 7 and Fig 5 for additional information Lifting holes are provided in base rails as shown in Fig 5 Refer to rigging instructions on unit Rigging mat...

Page 10: ...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 informati...

Page 11: ...Save the aluminum filter for use in the power exhaust hood assembly 1 The indoor coil access panel will be used as the top of the hood Remove the screws along the sides and bottom of the indoor coil a...

Page 12: ...owered convenience outlet the power source leads to the convenience outlet s transformer primary are not factory connected Installer must connect these leads accord ing to required operation of the co...

Page 13: ...ndle Fig 18 Power Wiring Connections Field Install the NFD Shaft and Handle 1 Remove the Control Box access panel The NFD enclosure is located below the Control Box see Fig 19 2 Remove 3 cap head scre...

Page 14: ...sition See Fig 22 6 Tighten the locking screw to secure the shaft to the HACR 7 Turn the handle to the OFF position with red arrow pointing at OFF 8 Install the handle on to the painted cover horizont...

Page 15: ...over Aweatherproof while in use cover for the factory installed conve nience outlets is now required by UL standards This cover cannot be factory mounted due its depth it must be installed at unit ins...

Page 16: ...zation is con firmed Observe National Electrical CodeArticle 210 Branch Cir cuits for use of convenience outlets Fuse On Power Type The factory fuse is a Bussman1 Fusetron T 15 non renewable screw in...

Page 17: ...rminals during operation must be within voltage range indicated on unit nameplate On 3 phase units volt ages between phases must be balanced within 2 and the current within 10 Use the formula shown in...

Page 18: ...terminal strip on the upper left corner of the Unit Control Board See Fig 32 NOTE If thru the bottom connections accessory is used refer to the accessory installation instructions for information on r...

Page 19: ...e heater module VIO and BRN two of each if a two circuit heater module is installed identify for circuit 1 to the 4 pole terminal board TB4 located on the heater bulkhead to the left of the Heater mod...

Page 20: ...ee Fig 40 Fig 40 Humidistat Connections to UCB Connecting the Thermidistat device 33CS2PPRH 01 1 Route the Thermidistat multi conductor thermostat cable field supplied through the hole provided in the...

Page 21: ...it with Humidi MiZer Adaptive Dehumidification System and Edge Pro Thermidistat Device Rc Rh W1 G Y2 C O W2 B Y1 OAT RRS SRTN HUM D1 D2 V Vg C HUM G W2 W1 Y2 Y1 R PROGRAMMABLE THERMOSTAT UNIT CONTROL...

Page 22: ...22 Fig 42 Typical 50GC 04 06 Control Wiring Diagram 208 230V W7220 Control Unit Shown...

Page 23: ...23 Fig 43 Typical 50GC 04 06 Power Wiring Diagram 208 230V Unit Shown...

Page 24: ...ce Provides status for normal operation setup parameters checkout tests and alarm and error conditions with a 2 line 16 character LCD display and four button keypad Electrical Rated Voltage 20 to 30 V...

Page 25: ...Sensor Input e g CO2 sensor IAQ COM COM Air Quality Sensor Common IAQ 24V 24 vac Air Quality Sensor 24 vac Source ACT 2 10 2 10 vdc Damper Actuator Output 2 10 vdc ACT COM COM Damper Actuator Output C...

Page 26: ...t a menu s item and return to the list of menus Fig 48 W7220 Controller Navigation Buttons To use the keypad when working with Setpoints System and Ad vanced Settings Checkout tests and Alarms 1 Navig...

Page 27: ...the and arrow buttons to move forward and back ward through the menus and press the button to select and confirm setup item changes TIME OUT AND SCREENSAVER When no buttons have been pressed for 10 m...

Page 28: ...re Displays _ _ _F if sensor sends invalid value if not connected short or out of range OA TEMP _ _ _ F 40 F to 140 F 40 C to 60 C OUTSIDE AIR TEMP Displays measured value of outdoor air temperature D...

Page 29: ...TILATION MINIMUM POSITION AT LOW SPEED Only displays if unit is set for 2 or 3 speed and CO2 is not used If using 2 speed with 1 heat and 1 cool then set for HEATING ventilation If using 3 speed with...

Page 30: ...If using 2 speed fan mode you must program CONV mode for W Shutdown is not available in 2 speed fan mode See Menu Note 4 In HP O B mode HP O energize heat pump on Cool default HP B energize heat pump...

Page 31: ...o adjust for an out of calibration temperature sensor 2SP FAN DELAY 5 Minutes 0 to 20 minutes in 1 minute increments TIME DELAY ON SECOND STAGE ECONOMIZING When in economizing mode this is the delay f...

Page 32: ...A OUTSIDE AIR TEMPERATURE SENSOR ERROR Outdoor air temperature sensor has failed or become disconnected check wiring then replace if the alarm continues ACT ERROR N A N A ACTUATOR ERROR Actuator has f...

Page 33: ...dary the conditions are not good to economize and the mode is set to NO Figure 49 shows the 5 current boundaries There is also a high lim it boundary for differential enthalpy The high limit boundary...

Page 34: ...delay time specified N A Not applicable Table 9 Fan Speed STATE FAN SPEED OCC Low Y1 Low Y2 High W High Table 10 Economizer Operation FAN TYPE 2SPEED INPUTS OUTPUTS DEMAND CONTROLLED VENTILATION DCV O...

Page 35: ...Once the alarm has been identified and the cause has been removed e g replaced faulty sensor the alarm can be cleared from the display To clear an alarm perform the following 1 Navigate to the desired...

Page 36: ...e sure that the elbow fitting is pointing down See Fig 51 Step 2 3 Screw the sensor and detector plate into its operating position using screws from Step 1 See Fig 51 Step 3 4 Connect the flexible tub...

Page 37: ...oc cupied sequence at terminals marked OCCUPANCY Detach the jumper covering the Occupancy terminals on the UCB and then attach the required connections Step 13 Install Accessories Available accessorie...

Page 38: ...for the base unit Then add Vdc for any accessories installed per the Field Accessories section of the label NOTE The fan speed set up labels are located on the High Volt age cover in the Control Box...

Page 39: ...he following determin ing the values per the RPM Calculator label see Fig 55 Use the UP and DOWN arrow keys and the BACK key to set the values Press ENTER after setting each value to continue to the n...

Page 40: ...75 66 80 107 0 4 1477 1544 1615 1688 1764 1842 1921 2003 2068 66 0 6 1639 1699 1763 1828 1897 1967 2040 2115 2191 0 8 1788 1843 1902 1962 2025 2090 2157 2227 2298 66 1 0 1925 1976 2031 2087 2146 2208...

Page 41: ......

Page 42: ...iscontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500269 01 Printed in U S A Form 50GC 4 6 03SI Pg 42 12 19A 12 19 Replaces 50...

Page 43: ...ns Y N _____ Verify that all electrical connections and terminals are tight Y N _____ Check that indoor air filters are clean and in place Y N _____ Check that outdoor air inlet screens are in place Y...

Page 44: ...______________ 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...

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