Carrier 50RHE006-060 specifications System Test, Control Current LED Status Alarm Relay Operations

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Output EH2 will be off if FP1 is greater than 7.2 C and FP2 (when shorted) is greater than 43.3 C during Heating Stage 3 mode. This condition will have a 30-second recognition time. Also, during Heating Stage 3 mode, EH1, EH2, Fan Enable, and Fan Speed will be ON if G input is not active.

EMERGENCY HEAT — In Emergency Heat mode, the Fan Enable and Fan Speed relays are turned on. The EH1 output is turned on immediately. With continuing Emergency Heat de- mand, EH2 will turn on after 5 minutes. Fan Enable and Fan Speed relays are turned off after a 60-second delay. The control reverts to Standby mode.

Output EH1, EH2, Fan Enable, and Fan Speed will be ON if the G input is not active during Emergency Heat mode.

COOLING STAGE 1 — In Cooling Stage 1 mode, the Fan Enable, compressor and RV relays are turned on immediately. If configured as stage 2 (DIP switch set to OFF) then the com- pressor and fan will not turn on until there is a stage 2 demand. The fan Enable and compressor relays are turned off immedi- ately when the Cooling Stage 1 demand is removed. The con- trol reverts to Standby mode. The RV relay remains on until there is a heating demand. If there is a master/slave or dual compressor application, all compressor relays and related func- tions will track with their associated DIP switch 2 on S1.

COOLING STAGE 2 — In Cooling Stage 2 mode, the Fan Enable, compressor and RV relays remain on. The Fan Speed relay is turned on immediately and turned off immediately once the Cooling Stage 2 demand is removed. The control re- verts to Cooling Stage 1 mode. If there is a master/slave or dual compressor application, all compressor relays and related func- tions will track with their associated DIP switch 2 on S1.

NIGHT LOW LIMIT (NLL) STAGED HEATING — In NLL staged Heating mode, the override (OVR) input becomes ac- tive and is recognized as a call for heating and the control will immediately go into a Heating Stage 1 mode. With an addition- al 30 minutes of NLL demand, the control will go into Heating Stage 2 mode. With another additional 30 minutes of NLL demand, the control will go into Heating Stage 3 mode.

SYSTEM TEST

System testing provides the ability to check the control operation. The control enters a 20-minute Test mode by momentarily shorting the test pins (see Fig. 9-12). All time delays are reduced by a factor of 15.

Test Mode — To enter Test mode on C or D controls, cycle the power 3 times within 60 seconds. The LED (light-emitting diode) will flash a code representing the last fault when enter- ing the Test mode. The alarm relay will also power on and off during Test mode. See Tables 13 and 14. To exit Test mode, short the terminals for 3 seconds or cycle the power 3 times within 60 seconds.

NOTE: Deluxe D Control has a flashing code and alarm relay cycling code that will both have the same numerical label. For example, flashing code 1 will have an alarm relay cycling code 1. Code 1 indicates the control has not faulted since the last power off to power on sequence.

Table 13 — C Control Current LED Status

and Alarm Relay Operations

LED STATUS

 

DESCRIPTION OF OPERATION

ALARM RELAY

 

 

 

Normal Mode

Open

 

On

 

Normal Mode with

Cycle

 

 

(closed 5 sec.,

 

 

 

PM Warning

 

 

 

Open 25 sec.)

 

 

 

 

 

Off

 

C Control is non-functional

Open

Slow Flash

 

Fault Retry

Open

 

Fast Flash

 

Lockout

Closed

Slow Flash

 

 

Open

 

Over/Under Voltage Shutdown

(Closed after

 

 

 

 

15 minutes)

Flashing Code 1

Test Mode — No fault in memory

Cycling Code 1

Flashing Code 2

Test Mode — HP Fault in memory

Cycling Code 2

Flashing Code 3

Test Mode — LP Fault in memory

Cycling Code 3

Flashing Code 4

Test Mode — FP1 Fault in memory

Cycling Code 4

Flashing Code 5

Test Mode — FP2 Fault in memory

Cycling Code 5

Flashing Code 6

Test Mode — CO Fault in memory

Cycling Code 6

Flashing Code 7

 

Test Mode — Over/Under

Cycling Code 7

 

shutdown in memory

 

 

 

 

Flashing Code 8

 

Test Mode — PM in memory

Cycling Code 8

Flashing Code 9

 

Test Mode — FP1/FP2

Cycling Code 9

 

Swapped Fault in memory

 

 

 

 

 

LEGEND

 

 

CO

— Condensate Overflow

 

FP

— Freeze Protection

 

HP

— High Pressure

 

LED — Light-Emitting Diode

 

LP

— Low Pressure

 

PM

— Performance Monitor

 

NOTES:

1.Slow flash is 1 flash every 2 seconds.

2.Fast flash is 2 flashes every 1 second.

3.EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed by a 10-second pause. This sequence will repeat continually until the fault is cleared.

Table 14 — C Control LED Code and

Fault Descriptions

 

LED

FAULT

DESCRIPTION

CODE

 

 

 

1

No fault in memory

There has been no fault since

 

 

 

the last power-down to power-up

 

 

 

sequence

 

2

High-Pressure Switch

HP Open Instantly

 

3

Low-Pressure Switch

LP open for 30 continuous sec-

 

 

 

onds before or during a call

 

 

 

(bypassed for first 60 seconds)

 

4

Freeze Protection Coax

FP1 below Temp limit for 30 con-

 

 

— FP1

tinuous seconds (bypassed for

 

 

 

first 60 seconds of operation)

 

5

Freeze Protection Air Coil

FP2 below Temp limit for 30 con-

 

 

— FP2

tinuous seconds (bypassed for

 

 

 

first 60 seconds of operation)

 

6

Condensate overflow

Sense overflow (grounded) for

 

 

 

30 continuous seconds

 

7

Over/Under Voltage

"R" power supply is <19VAC or

(Autoreset)

Shutdown

>30VAC

 

8

PM Warning

Performance Monitor Warning

 

 

 

has occurred.

 

9

FP1 and FP2 Thermistors

FP1 temperature is higher than

 

 

are swapped

FP2 in heating/test mode, or FP2

 

 

 

temperature is higher than FP1

 

 

 

in cooling/test mode.

 

LEGEND

 

FP

— Freeze Protection

 

HP

— High Pressure

 

LED — Light-Emitting Diode

 

LP

— Low Pressure

 

PM

— Performance Monitor

 

22

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Contents Contents Safety ConsiderationsInstallation GeneralPhysical Data Aquazone 50RHE006-060 Units Unit 50RHELeft Return Right ReturnTypical Installation 50RHE Units Conversion Left Return, Side Discharge to Back Discharge 030,036 Dimensions mm50RHE Units 042,048Typical Ground-Water Piping Installation Water Quality Guidelines Electrical WiringCondition Acceptable Level RVS PSCCAP FP1Comp Blower Motor Capacitor Performance Monitor Blower Relay Loss of Charge Pressure Switch Motorized ValveBMC Sensor, Air Coil Freeze ProtectionTypical Aquazone Deluxe D Control Wiring 3-Phase Unit Unit Circuit 50RHE VOLTS-PHASE Voltage Compressor FAN Total MIN MAXElectrical Data RLA LRA FUSE/HACR FLAAirflow 50RHE Blower Performance50RHE Unit SpeedLow Voltage Wiring See Fig PRE-START-UPControl Jumper Settings See Field Selectable InputsSTART-UP Control Accessory Relay ConfigurationsOperating Limits Water Temperature Change Through Heat Exchanger Unit Start-Up Cooling ModeUnit Start-Up Heating Mode Cooling HeatingTypical Unit Operating Pressures and Temperatures 50RHE Coaxial Water Pressure DropOperation Approximate Fluid Volume L Per 30 m of PipeAntifreeze Percentages by Volume Units with Aquazone Complete C ControlControl LED Code Fault Descriptions Control Current LED Status Alarm Relay OperationsSystem Test Description Status LED Test LED ServiceAlarm Relay ESDGravity Flow Method Refrigerant Charging TroubleshootingAir Coil Fan Motor Removal Troubleshooting Fault Heating Cooling Possible Cause SolutionUnit Does Not Operate Page Page Copyright 2004 Carrier Corporation 50RHE R-407C Unit START-UP Checklist II. START-UPHeating Cycle Analysis Cooling Cycle Analysis

50RHE006-060 specifications

The Carrier 50RHE006-060 is a robust commercial rooftop unit designed for efficient heating and cooling in various applications. This model is part of Carrier’s renowned line of HVAC systems, known for their reliability and performance. With a nominal cooling capacity of 5 tons and heating capacity of 6 tons, this unit is suitable for medium-sized commercial spaces such as retail stores, offices, and schools.

One of the standout features of the Carrier 50RHE006-060 is its advanced scroll compressor technology. This type of compressor is recognized for its efficiency and durability, offering quiet operation while minimizing energy consumption. The inclusion of a variable-speed blower motor enhances comfort by providing consistent airflow while also reducing energy costs by adjusting the speed according to the demand.

Another key characteristic is its integrated microprocessor control system, which allows for precise temperature management. This feature not only provides optimal comfort but also ensures energy savings. The system’s controls can be easily integrated with existing building management systems, allowing for seamless operation and monitoring.

The Carrier 50RHE006-060 boasts enhanced insulation properties, which help reduce noise during operation and improve energy efficiency. Its robust design can withstand various weather conditions, making it a reliable choice for rooftop installation. Moreover, it is designed with accessibility in mind, featuring service doors that allow for easy maintenance, reducing downtime and operational costs.

In terms of efficiency, the unit is designed to meet or exceed EPA energy efficiency standards. It utilizes environmentally friendly refrigerants, adhering to regulations aimed at reducing greenhouse gas emissions. Additionally, the design includes a high-efficiency heat exchanger, which maximizes heat transfer and improves overall performance.

The Carrier 50RHE006-060 is also equipped with a dual-stage heat function, allowing it to provide optimal heating for varying weather conditions, ensuring comfort during the colder months. Furthermore, the unit’s design incorporates features such as hot gas bypass for improved dehumidification, making it adaptable to different climates and enhancing indoor air quality.

In summary, the Carrier 50RHE006-060 stands out with its efficient compressor technology, smart control systems, robust construction, and environmentally conscious design. These features make it a top choice for commercial spaces seeking an effective, reliable, and energy-efficient heating and cooling solution.
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