HTPG HTPG2303IOMPRS Inflation System Packaged Refrigeration System Instruction Manual

Instruction Manual for HTPG models including: HTPG2303IOMPRS Inflation System Packaged Refrigeration System, HTPG2303IOMPRS, Inflation System Packaged Refrigeration System, Packaged Refrigeration System, Refrigeration System

[PDF] PACKAGED REFRIGERATION SYSTEM

19 - 20. Electrical Wiring Diagrams . ... The evaporator fans (Aux Relay 1) will turn ON when Evap Temp 1 drops below 35ºF (Freezer) or 55ºF. (Cooler).

File Info : application/pdf, 13 Pages, 1.74MB

HTPG2303IOMPRS IOM Package-Unit

INSTALLATION · MAINTENANCE · OPERATION
PACKAGED REFRIGERATION SYSTEM
Updated April 2023
HTPG2303IOMPRS P/N: 08537801

CONTENTS

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Unit Replacement Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Installation Instructions

Indoor Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 5

Outdoor Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 7

Clearances and Unit Placements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

98-

Before Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

After Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Unit Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Sequence Of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 - 15

EcoNet Controller Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 - 18

Electrical Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 - 20

Electrical Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22- 21

Piping Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement Parts & Shipped Loose Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Packaged Refrigeration System (PRS)

Outdoor Options Available

PAGE 2

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

INSPECTION
Check all items against the bill of landing to make sure all crates or cartons have been received. If there is any damage, report it immediately to the carrier and file a claim. Make sure the voltage on the unit nameplate agrees with the power supply available.
GENERAL SAFETY INFORMATION
1. Installation and maintenance are to be performed only by qualified personnel who are familiar with this type of equipment.
2. Make sure that all field wiring conforms to the requirements of the equipment and all applicable national and local codes.
3. Avoid contact with sharp edges and coil surfaces. They are potential injury hazards. 4. All power sources must be disconnected prior to any servicing or maintenance of this unit. After
disconnecting power, allow 5 minutes for capacitor discharge before servicing motors. 5. Refrigerant recovery devices must be used during installation and service of this equipment. It is illegal
for ALL refrigerants to be released into the atmosphere.
UNIT PLACEMENT REQUIREMENTS
See dimensions and weight tables on pages 9-11 and follow these guidelines: 1. Make sure that the structural integrity of the box can withstand the weight of the unit(s). 2. Do not remove the shipping skid from the unit until it is ready to be lifted into place on top of the walk-in. 3. Do not locate the evaporator section of the unit over a door. 4. The unit supply air pattern must cover the entire walk-in. 5. Leave one unit width between sides of unit and walls. Leave two-unit widths between units. 6. Provide adequate space at the compressor compartment end of the unit and a minimum of two feet above
the unit for servicing. 7. Adequate airflow must be available for condenser. Do not shield the PRS unit, use top of walk-in for storage,
or install the PRS unit in a non-ventilated space. Lack of attention to this detail will cause poor performance and possibly unit failure. 8. Do not locate unit around steam, hot air or fume exhausts. 9. Indoor units are designed for use in areas that range in temperature from 50°F to 110°F. 10. Outdoor installation requires a Roof Kit or condensate drain heater. Roof Kit sold separately. 11. Do not install units in noise sensitive areas. Units must be properly supported to prevent excessive noise and vibration. 12. Installations that do not conform to all the requirements in this manual will void the unit warranty

PACKAGED REFRIGERATION SYSTEM

PAGE 3

PART DESCRIPTION:

IOM DRAWINGS

INSTALLATION INSTRUCTIONS
INDOOR MODELS
GENERAL Installation and maintenance are to be performed by qualified personnel who are familiar with local codes and regulations. Installers should have previous experience with commercial refrigeration equipment.
CAUTION: AVOID CONTACT WITH SHARP EDGES AND COIL SURFACES. THEY ARE POTENTIAL HAZARDS.
The PRS cabinet units have lifting eyes. Use a spreader bar when rigging to prevent damage and to reduce stress on the unit cabinet. IMPORTANT: The compressor compartment cover must be left on units when lifting using the lifting eyes.
1. Inspect packaging for shipping damage. Open package and inspect unit for concealed damage. 2. Follow Figure 1 requirements on page 5. 3. Cut a finished opening in the box ceiling to the dimensions shown in the footprint drawings on page
5. Make sure that the top with the cut-out has the structural integrity to hold the unit. See table on page 10 for unit weights. 4. Make sure that the surface of the box is clean and level where the unit gasket will seal around the opening. 5. Refer to the walk-in box manufacturer's instructions for any procedures that may be necessary to ensure the integrity of the exposed foam in the panels. 6. Make sure the unit is mounted level - no more than 1/8-inch drop per foot. 7. Place the unit into the provided opening with the evaporator air flow directed toward the door (See Figure 1 on page 5). Be careful not to damage the grill during installation. 8. Make sure that the condenser air flow is not obstructed. 9. On indoor units, condensate is evaporated by a discharge line loop run through the drain pan under the compressor, so a drain line is not required. In high moisture environments, the condensate should be drained to a sink or floor drain using flexible tubing. 10. Install the trim pieces around the inside opening.

PART NO.

IOM

PAGE 4

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

ALL BRAKES ARE 90° UNLESS OTHERWISE SPECIFIED.
REV

SEE LAST SHEET FOR TOLERANCES

ORIG. EC DATE:
2/8/23

DRAWN BY:
KJ

MATERIAL:

ORIG. EC NO.:

NO REVISION TO DESIGN, MATERIAL, TOOLING, OR PROCESS IS ACCEPTABLE WITHOUT PRIOR APPROVAL FROM RHEEM THROUGH AN AUTHORIZED CHANGE NOTICE, A REVISED ENGINEERING SPECIFICATION AND A RESAMPLING OF PARTS. THE SUPPLIER IS RESPONSIBLE FOR NOTIFYING RHEEM R & D AND PURCHASING DEPARTMENTS IN WRITING OF ANY CHANGES AFFECTING PRODUCT QUALITY, PERFORMANCE, RELIABILITY, PACKAGING, DELIVERY OR WORKMANSHIP. "ANY DOCUMENTS REFERRED TO ON THIS DRAWING ARE INCLUDED IN THE SPECIFICATIONS FOR THIS COMPONENT".

DATE:

REV BY: EC NO:

CREATED BY DIVISION: REV NOTE:

STATE:

INSTALLATION & CLEARANCES
INDOOR MODELS

MOUNTING RAILS MAY BE USED TO FASTEN UNIT TO TOP
OF WALK-IN MINIMUM BOTH SIDES TO INSIDE WALLS = UNIT WIDTH MINIMUM SPACE BETWEEN MULTIPLE UNITS = 2X UNIT WIDTH
DO NOT MOUNT UNITS ABOVE
DOOR OPENING.

AIR FLOW

2 FT. MINIMUM CLEARANCE FOR SERVICING. DO NOT SHIELD UNIT OR USE TOP OF WAK-IN FOR STORAGE. ADEQUATE AIRFLOW MUST BE AVAILABLE FOR CONDENSER.
2 INCH MINIMUM TO INSIDE WALL

SUPPLY AIR

RETURN AIR

FIG. 1

NOTE: Units are ONLY designed for top mount applications PACKAGED REFRIGERATION SYSTEM

PAGE 5

DRAWN BY:
KJ

PART DESCRIPTION:

ORIG. EC DATE:
2/8/23

INSTALLATION INSTRUCTIONS
OUTDOOR MODELS
GENERAL Installation and maintenance are to be performed by qualified personnel who are familiar with local codes and regulations. Installers should have previous experience with commercial refrigeration equipment.
CAUTION: AVOID CONTACT WITH SHARP EDGES AND COIL SURFACES. THEY ARE POTENTIAL HAZARDS.
The PRS cabinet units have lifting eyes. Use a spreader bar when rigging to prevent damage and to reduce stress on the unit cabinet. IMPORTANT: The compressor compartment cover must be left on units when lifting using the lifting eyes.
Installation is the same as indoor models except as follows: 1. Units must be curb mounted (curb provided by others). To help with curb sizing, see pages 8-9 which
show unit footprint dimensions for each cabinet size. Curb height should be limited to 6 inches. The curb should be insulated and divide supply and return air flows. 2. Make sure curb is level and properly flashed to prevent water leakage into walk-in. 3. Water from rain or snow may get into compressor section of unit. Make sure the curb under this part of unit is designed with openings so water will not collect inside the curbing. 4. The condensate drain outlet is located on the side of the unit. Field piping may be connected to the outlet provided it is adequately sloped and heated to prevent freezing, where necessary. The drain line in the unit is trapped. 5. Secure unit to curb using the base mounting rail. 6. Install weather hood and optional condenser hail guard.
NOTE: Roof membrane (supplied by others) must be cut to allow for evaporator air flow from the unit into the cooled environment (box).

ORIG. EC NO.:

IOM DRAWINGS

SEE LAST SHEET FOR TOLERANCES

MATERIAL:

PART NO.

IOM

ALL BRAKES ARE 90° UNLESS OTHERWISE SPECIFIED.
REV

PAGE 6

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

DATE:

REV BY: EC NO:

CREATED BY DIVISION: REV NOTE:

STATE:

INSTALLATION & CLEARANCES
OUTDOOR MODELS

CONDENSER COVER MUST BE LEFT IN PLACE.
OUTDOOR ROOF AND HAIL GUARD TO BE
APPLIED AFTER UNIT HAS BEEN INSTALLED
AREA OF CURB UNDER CONDENSER SECTION MUST BE FREE TO DRAIN ONTO ROOF
SO WATER DOES NOT GET TRAPPED INSIDE OF CURB

LIFTING EYES
CURB & FLASHING BY OTHERS FOR GUIDANCE, SEE NOTE 1

FIG. 2
NOTE: Units are ONLY designed for top mount applications PACKAGED REFRIGERATION SYSTEM

PAGE 7

PAGE 9

2-foot clearance on all other sides

5 8

3-foot clearance on the side with electrical panel and

Allow for a minimum

1 2

3 16

3 4

5 8

3 4

3 8

POWER IN

7 16

3 8

1 2

PACKAGED REFRIGERATION SYSTEM

1 2

CLEARANCES & UNIT PLACEMENTS
SMALL CABINET DIMENSIONS

1 3 16

13 16

AIR OUT

AIR IN

3 4

1 1 6

7 1 6

1 16

1 2

STATE:

CREATED BY DIVISION: REV NOTE: Heat Transfer Products Group

REV BY: EC NO: DATE:

DRAWN BY:
KJ

ORIG. EC DATE:
11/4/22

ORIG. EC NO.:

SEE LAST SHEET FOR TOLERANCES

MATERIAL:

ALL BRAKES ARE 90° UNLESS OTHERWISE SPECIFIED.

PART DESCRIPTION:

PART NO.

REV

SMALL CAB DIMENSIONAL,PKG UNIT

SM_DIM_PKG

15"
Allow for a minimum 3-foot clearance on the side
with electrical panel and 2-foot clearance on all other sides
15"

7 8

3 4

25"

1 1 16

7 8

3 8

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

POWER IN

7 16

CLEARANCES & UNIT PLACEMENTS
LARGE CABINET DIMENSIONS

3 8

1 2

5 5

13 16

AIR OUT

AIR IN

PAGE 8

3 4

1 1 6

7 16

1 16

1 2

STATE:

CREATED BY DIVISION: REV NOTE: Heat Transfer

REV BY:

Products Group

EC NO: DATE: ALL BRAKES ARE 90°

BEFORE UNIT START-UP
1. Check all mechanical and electrical connections for looseness that may have developed during transit and tighten as necessary.
2. Adhere to all applicable building and electrical codes when wiring unit. 3. Make sure supply power is correct voltage and phase for unit and is fused properly. 4. If unit is supplied with a power cord, plug unit into power supply.
IMPORTANT
Do not use extension cords to connect unit to power! Plug-in to grounded three prong outlet! Do not remove grounding prong! Do not use a power adapter!
5. If unit is not offered with a cord, hard wire to power suitable supply.
AFTER UNIT START-UP
1. To protect the compressor (in the event of a brief power interruption), the electronic controller is programmed for a one-minute start-up time delay.
2. See EcoNet Controller Operation section to set box temperature (factory settings are 35ºF for air defrost coolers, and -10ºF for freezers) and change any control parameters that may have to be adjusted to fit the application.
3. Unit defrosting operation should be checked after start-up and periodically thereafter. The amount and pattern of frosting can vary greatly. Frost build-up is dependent on the temperature of the room, the type of product being stored, and usage profile.

PAGE 10

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

PRS WEIGHT

Model

Cabinet Size

HPH050M48AA HPH055M48AA HPO080M48AA HPO100M48AA HPO120M48AA HPH050M48DA HPH055M48DA HPO080M48DA HPO100M48DA HPO120M48DA HPO150M48DA HPO150L48DA HPO250L48DA HPO300L48DA HPO350L48DA

Small Small Small Small Large Small Small Small Small Large Large Small Small Large Large

APX. NET WEIGHT

206 206 206 206 235 206 206 206 206 235 235 218.5 218.5 264 264

93.4 93.4 93.4 93.4 106.6 93.4 93.4 93.4 93.4 106.6 106.6 99.1 99.1 119.7 119.7

APX. SHIP WEIGHT

286 286 286 286 313 286 286 286 286 313 313 298.5 298.5 342 342

129.7 129.7 129.7 129.7 142 129.7 129.7 129.7 129.7 142 142 135.4 135.4 155.1 155.1

ACCESSORY WEIGHT

Part #

Item

08537285 08537289 08537411 08537412

LRG ROOF KIT SM ROOF KIT SM SNOW GUARD LRG SNOW GUARD

PACKAGED REFRIGERATION SYSTEM

APX. NET WEIGHT

24.5

11.1

21.6

9.8

4.3

1.9

4.9

2.2

PAGE 11

MAINTENANCE
The following items should be checked every six months. Make sure all power is shut off to unit before performing any maintenance or service.
1. Tighten all electrical connections. 2. Check all wiring and insulators. 3. Check contactor for proper operation. 4. Check all fan motors. Tighten motor mount screws/nuts and fan set screws. 5. Clean the condenser and evaporator coil surfaces.
CAUTION: Avoid contact with sharp edges and coil surfaces. They are potential hazards.
6. Check the operation of the control system. Make sure all safety controls are operating properly. 7. Make sure evaporator is defrosting properly. 8. Clean the drain pan and drain lines. Check the drain pan and drain line for proper drainage. 9. On outdoor units make sure the crankcase and drain line heaters, and thermostat are functioning
properly. 10. On low temperature units make sure drain line heater is operating properly.
SERVICE
All service to the evaporator section is performed by removing the top panel. The PRS uses an EEV controlled by the EcoNet Controller. Drain pan and defrost heaters on electric defrost models are retained with clips and can be removed for service. The electrical compartment is accessed by the lift off hinged door. The compressor and condenser fans are serviced by removing the condenser section top panel. The PRS unit is factory charged with R448A.

PAGE 12

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

REFRIGERANT CHARGE
COMING SOON
PACKAGED REFRIGERATION SYSTEM

PAGE 13

SEQUENCE OF OPERATION
Set the rocker switch by the access panel to the ON position to power up the EcoNet controller.

COOLING

On start-up, the controller will zero the Electronic Expansion Valve (EEV) and turn on Aux Relay 1 to start the evaporator fans.
After 1 minute, If the Space Temperature is greater than the Setpoint + Setpoint Control, the controller will begin a cooling cycle and the EEV will open. The controller will maintain an active cooling cycle for a minimum of 5 minutes by default (configurable via SettingsEquipmentCmp. Min. Run Time).
With the EEV open, the Suction Pressure will begin to increase. When the Suction Pressure is greater than the Cut-Out Setpoint + Cut-In Offset, the controller will turn ON Aux Relay 2 to start the compressor and the condenser fans.
1. If the condensing pressure is below 120 PSIG, the fan speed control switch (FS) will close causing the condenser fans to operate at low speed.
2. If the condensing pressure rises above 180 PSIG the fan speed control switch (FS) will open causing the condenser fans to operate at high speed.
Immediately after the compressor starts, the Suction Pressure will temporarily decrease as the controller starts metering the EEV to seek balanced system operation.
The evaporator fans (Aux Relay 1) will turn ON when Evap Temp 1 drops below 35ºF (Freezer) or 55ºF (Cooler).
When the EEV is open, the controller will ignore the low pressure Cut-Out Setpoint for the first 60 seconds of compressor (Aux Relay 2) operation. This bypass period is to prevent any possible unwanted low pressure cut-out during the initial decrease in Suction Pressure, and it is only applied on an active cooling cycle while the EEV is open.
After the bypass time has elapsed, if the Suction Pressure drops below the Cut-Out Setpoint, the Aux Relay 2 will turn OFF and stop the compressor. The controller is still in an active cooling cycle with the EEV open, which will cause the Suction Pressure to rise again and turn the compressor (Aux Relay 2) back ON and reset the 60 second bypass timer.
When the Space Temp Setpoint is satisfied, the cooling cycle ends, and the controller will close the EEV causing a pump down. The compressor (Aux Relay 2) will turn OFF when the Suction Pressure drops below the Cut-Out Setpoint.
While the EEV is closed, if the Suction Pressure rises above Cut-Out Setpoint + Cut-In Offset, the compressor (Aux Relay 2) will momentarily turn ON to keep the system pumped down, then immediately turn OFF when Suction Pressure falls below the Cut-Out Setpoint. There is no low pressure bypass timer when the EEV is closed.

PAGE 14

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

SEQUENCE OF OPERATION

DEFROST

FREEZER · Electric Defrost
Default defrost logic is based on cooling run time (default 6 hours; can be adjusted via SettingsEquipmentDef. Cmp. Run Time). Optional alternate defrost logic is Adaptive (SettingsEquipmentDefrost Type). See EcoNet Evaporator Controller Installation Manual for more information on Adaptive Defrost.
When the defrost cycle starts, the controller will close the EEV and wait 1 minute to allow the compressor to pump down before turning on the defrost heaters. (This pump down delay can be adjusted via SettingsEquipmentDef. Pmp. Dn. Delay.)
After this delay, the evaporator fans will turn OFF, and the defrost heaters will turn ON. While the controller is undergoing a defrost cycle ("Defrosting" indicated on the controller display), the compressor will remain OFF.
The defrost termination will occur when Evap Temp 1 reaches 55F (adjustable via SettingsEquipmentDefrost Termination Temp), or when the 1 hour defrost time limit is reached (adjustable via SettingsEquipmentDef. Max Run Time).
When the defrost cycle ends, the controller will allow a 5-minute Drain Time with the EEV still closed and evaporator fans turned off. At this time, if the Suction Pressure has risen above the Cut-Out Setpoint + Cut-In Offset, the compressor (Aux Relay 2) will be allowed to momentarily turn on if needed to keep the system pumped down. When the Drain Time ends, the controller will open the EEV to begin the next cooling cycle.
COOLER · Air Defrost
Default defrost logic is based on cooling run time (default 6 hours; can be adjusted via SettingsEquipmentDef. Cmp. Run Time). Adaptive Defrost is not applicable for Cooler (air defrost) setting.
When the defrost cycle starts, the controller will close the EEV to force a pump down and keep the evaporator fans running at low speed after the compressor has turned OFF. While the controller is undergoing a defrost cycle ("Defrosting" indicated on the controller display) the compressor will remain OFF.
The defrost termination will occur when Evap Temp 1 reaches 40F (adjustable via SettingsEquipmentDefrost Termination Temp), or when the 1 hour defrost time limit is reached (adjustable via SettingsEquipmentDef. Max Run Time).
When the defrost cycle ends, the controller will open the EEV to begin the next cooling cycle.

PACKAGED REFRIGERATION SYSTEM

PAGE 15

CONTROLLER OPERATION
ECONET
The EcoNet Evaporator Controller on the PRS controls the following: 1. Evaporator fans On/Off via Auxiliary Relay 1. 2. Compressor On/Off via Auxiliary Relay 2, based on Suction Pressure Cut-Out and Offset setpoints. 3. Electronic Expansion Valve (EEV) to control superheat with readings from Suction Temperature sensor
and Suction Pressure transducer. EEV will also fully close for system pump down. 4. Defrost (Air or Electric) based on cooling runtime or adaptive defrost algorithms.

NOTES

· Controller version HT-PG01-00-01-23 or newer is required for PRS operation.

· Verify Voltage Selector Switch is set to the correct setting (115V or 230V) before applying power to the unit.

Aux Temp Sensor (not used)

Drain Temp Sensor (not used)

EcoNet Connection Terminals
Digital Inputs

Space Temp Sensor
Wire Harness Connector - Suction Pressure - Suction Temperature - Evap. Temp 1 - Evap. Temp 2 (not used) - EEV Connector
Controller Display & Navigation Buttons

PWM Fan Output (not used)

ECONET BOARD

Auxiliary Relays

Defrost Relays

PAGE 16

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

Voltage Selector Switch Main Power Connector

CONTROLLER OPERATION
ECONET
CONTROLLER CONFIGURATIONS FOR PRS OPERATION Scan QR code to access EcoNet Controller IOM for a complete list of configuration settings

CONFIGURATION PARAMETER Aux Relay Config. Cut-Out Setpoint Cut-In Offset

ADJUSTMENT RANGE Comp-Fan Control; Fan Control -2 PSIG to 60 PSIG
10 PSIG to 50 PSIG

DEFAULT SETTING
"Comp-Fan Control" "0 PSIG" for Freezer units; "20 PSIG" for Cooler units
"20 PSIG"

Def. Pmp. Dn. Delay

None; 1 min; 2 mins; 3 mins; 4 mins; 5 mins

"1 min" for Comp-Fan Control; "None" for Fan Control

CONFIGURATION SETTINGS Navigate to SettingsEquipment on controller display to view/adjust:

1. Aux Relay Config. a. Comp-Fan Control: Controller will use Auxiliary Relay 1 for evaporator fan on/off control, and Aux Relay 2 for compressor on/off control based on Suction Pressure transducer reading. Applicable to PRS. NOTE: PRS MUST be set to Comp-Fan Control or damage to equipment will result!!! b. Fan Control: Controller will use Auxiliary Relays 1 and 2 to control dual speed fan motors on evaporator. This setting is not applicable for PRS!!!
2. Cut-Out Setpoint: Pressure setpoint at which the compressor will turn off.
3. Cut-In Offset: Pressure differential for compressor to turn on.
4. Def. Pmp. Dn. Delay: Defrost pump down delay for Freezer units; when an electric defrost cycle starts, the controller will wait the specified amount of time after the EEV closes to allow for compressor pump down before turning on the defrost heaters.

With Aux Relay Config. set to Comp-Fan Control, the EcoNet controller will rely on the Suction Pressure transducer reading to determine when to cycle the compressor ON or OFF via Auxiliary Relay 2.
When a cooling cycle starts, the controller will open the EEV which will cause the Suction Pressure to increase.
The compressor will turn ON when: Suction Pressure (PSIG) is greater than Cut-Out Setpoint + Cut-In Offset

PACKAGED REFRIGERATION SYSTEM

PAGE 17

CONTROLLER OPERATION
ECONET
To prevent compressor short cycling, when a cooling cycle starts (EEV opens) the controller will keep the compressor on for a minimum amount of time even if the Suction Pressure briefly gets below the Cut-Out Setpoint. When a cooling cycle ends (setpoint is satisfied, defrost starts, etc.), the controller will close the EEV. The compressor running will cause the Suction Pressure to decrease. The compressor will turn OFF when: Suction Pressure (PSIG) is less than the Cut-Out Setpoint When there is no call for cooling (EEV is closed), the compressor will turn off immediately whenever the Suction Pressure drops below the Cut-Out Setpoint.
EXAMPLE 1 · Low Temperature Unit Cut-Out Setpoint = 0 PSIG Cut-In Offset = 20 PSIG Compressor will turn ON when Suction Pressure is greater than 20 PSIG. Compressor will turn OFF when Suction Pressure is less than 0 PSIG.
EXAMPLE 2 · Medium Temperature Unit Cut-out Setpoint = 20 PSIG Cut-In Offset = 20 PSIG Compressor will turn ON when Suction Pressure is greater than 40 PSIG. Compressor will turn OFF when Suction Pressure is less than 20 PSIG.
NOTE If the unit is defrosting, the controller will not allow the compressor to turn on. When the unit is not defrosting, the controller will allow the compressor to turn on for the next cooling cycle when the EEV opens, or for pump down if needed while the EEV is closed.

TROUBLESHOOTING GUIDE
MODES OF OPERATION: MEDIUM TEMP

CONTROL CIRCUIT INPUTS

SYSTEM RESPONSE

Rocker Switch

Cntrl Mode

LP Bypass Timer*

LP Pmp dwn Cntrl* Delay*

Drain time*

Fan Delay*

HS Comp CCH

Cond Fans

Evap Dr Line Def

Fans

Htr

Htrs

Off

Cooling Active

Bypass

- On Off Slow Fast

Cooling Active

Bypass

O - On Off Fast Fast

Cooling Active

- Off On

Off Slow

Cooling Active

- On Off Slow Fast

Cooling Active

O - On Off Fast Fast

Cooling Active

O-

- Off On

Off Slow

Cooling Satisfied

- Off On

Off Slow

Defrost

Off

Off Slow

Closed Open

NOTE
· "-" implies that the feature is either not applicable or that the feature does not affect this mode of operation.
· Control inputs identified with * are on board the EcoNet 1.0 controller.

PAGE 18

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

PACKAGED REFRIGERATION SYSTEM

PAGE 19

TROUBLESHOOTING GUIDE
MODES OF OPERATION: LOW TEMP

CONTROL CIRCUIT INPUTS

SYSTEM RESPONSE

Rocker Switch

Cntrl Mode

LP Bypass Timer*

LP Pmp dwn Cntrl* Delay*

Drain time*

Fan Delay*

HS Comp CCH

Cond Fans

Evap Dr Line Def

Fans

Htr

Htrs

Off

Cooling Active

Bypass

Cooling Active

Bypass

Cooling Active

Cooling Satisfied

Defrost

Pmp dwn

Defrost

Pmp dwn

- On Off Slow Fast

O - On Off Fast Fast

- Off On

Off Slow

- On Off Slow Fast

O - On Off Fast Fast

O-

- Off On

Off Slow

- Off On

Off Slow

Off Slow Fast Off

Off

O-

Off Fast Fast Off

Off

Defrost

Delay

Off

Off Slow Off

Off

Defrost

Off On

Off

Defrost

- O Off

Off

Defrost

Cooling Active

Bypass

Cooling Active

Bypass

Delay

Off

Delay

O-

On Off Slow Off

Off

Delay

Off Fast Off

Off

Closed Open

PAGE 20

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

ELECTRICAL WIRING DIAGRAMS
MEDIUM TEMP AIR DEFROST 115/1 OR 208-230/1

PACKAGED REFRIGERATION SYSTEM

PAGE 21

ELECTRICAL WIRING DIAGRAMS
LOW TEMP ELECTRIC DEFROST 208-230/1

PIPING DIAGRAMS

MEDIUM TEMP

LOW TEMP

PAGE 22

INSTALLATION · OPERATION · MAINTENANCE
HTPG2303IOMPRS

PACKAGED REFRIGERATION SYSTEM

PAGE 23

REPLACEMENT PARTS
Below is list of common replacement parts. Should you need something outside of this list, please call our Parts Team at 1-855-HTPARTS (1-855-487-2787) or email Parts@htpg.com.

PART NUMBER (P/N)
08323272 08326021 08536858 08537151 08216216 08221175 08397064 08397068 08219621 08219623 08219624 08219636 08219543 08219544 08219540 08219424 08537183

DESCRIPTION
A3-40-525-12 SLIDE LATCH LATCH,APEX,#8335-02
EVAP BOX,GASKET,LG CAB,PKG UNIT EVAP BOX,GASKET,#X2199,SM CAB,PKG UNIT
MOTOR,35W,EC,115/230,2SP,NIDEC FAN,PROP.,12-24X1/4,CW,AL,ECM GRILLE,WIRE,BLACK,16.88X15.75 MOUNT,MOTOR,WIRE,12IN,4 LEG
PRESSURE TRANSDUCER,0-150 PSIA SPACE TEMP THERMISTOR ASSEMBLY, 10KOHMS - ECONET
CONTROL BOARD, REFRIGERATION EVAP TEMP, FLUSH MOUNT THERMISTOR,10K OHM - ECONET
EEV,SER-AA-3X4 ODF,NOCBL EEV,SER-A-3X4 ODF, NOCBL EEV,SER-B-3X4 ODF,NOCBL SWITCH,HI PRESS,AUTO RESET 400 CONTROL,PRES,ENCAP,OPEN RISE,180PSIG

SHIPPED LOOSE
ACCESSORIES
PRS shown with outdoor weather hood and hail guard option. The weather hood and hail guard are shipped loose and field assembled and installed. Sizes are available for both cabinets.

Controller version HT-PG01-00-01-23 or newer is required for PRS operation

WARRANTY
The Seller warrants against defect in materials and workmanship in products which it manufactures for (1) year from the date of installation or up to 18 (eighteen) months from the date of shipment, whichever event occurs first, when properly installed and operated under normal use. This guarantee does not include any labor or other charges made outside of the Seller's factory for replacement or repair of defective parts unless specifically stated in the body of the Sellers invoice. On parts not manufactured by HTPG, such as motors, controls, valves and compressors we extend to the Buyer the same warranties made to us by the manufacturer.
The Seller's only liability under this warranty or otherwise shall be the repair or replacement (at Seller's option) of nonconforming goods or parts. Seller assumes no liability for incidental or consequential damages such as injury to persons or property, or lost profits.
Claims must be submitted to our Warranty Group within 90 days of the repair. To submit a claim, visit https://www.htpg.com/submit-a-claim/
GET A DIGITAL VERSION OF THE GUIDE
by scanning this QR code or the one located in the ebox of the unit
HTPG.com
©2023 Heat Transfer Products Group Published March 2023 HTPG2303IOMPRS

References

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