Carrier 30RQSY078 User Manual

INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
Reversible Air-to-Water Heat Pumps
30RQS/30RQSY 039-160 “A”
Original instructions
Nominal cooling capacity 40-160 kW
50 Hz
Touch Pilot Junior
For the operation of the control please refer to the
Touch Pilot Junior Control manual for the 30RB/30RQ 017-160 series
30RQS
30RQSY

Carrier 30RQSY078 Specifications

General

Model	30RQSY078
Type	Heat Pump
Cooling Capacity (BTU/h)	78, 000
Refrigerant	R-410A
Phase	3
Compressor Type	Scroll
Voltage	208-230

Summary

INTRODUCTION

Installation Safety Considerations

Safety precautions and initial checks required before unit installation and start-up.

MOVING AND SITING THE UNIT

Siting the Unit

Recommendations for selecting an appropriate installation location, considering access and environmental factors.

Checks Before System Start-up

Essential checks to perform on the complete installation before initiating system start-up.

INSTALLATION SPECIFICS FOR 30RQSY UNITS

Duct Connection

Details on connecting air distribution ductwork to the 30RQSY units for suction and discharge.

DIMENSIONS AND CLEARANCES

4.1 30RQS 039 and 045-078, Units with and without Hydronic Module

Dimensional data and clearance requirements for 30RQS units.

4.5 30RQSY 050-078, Units with and without Hydronic Module, without Filter Frame

Dimensional data and clearance requirements for 30RQSY units.

4.9 30RQS/RQSY 039-078 Units with Buffer Tank Module

Dimensional data and clearance requirements for 30RQS/RQSY units with buffer tank module.

4.2 30RQS 080-160, Units with and without Hydronic Module

Dimensional data and clearance requirements for 30RQS units.

4.6 30RQSY 050-078, Option 23B, Units with and without Hydronic Module, with Filter Frame

Dimensional data and clearance requirements for 30RQSY units with filter frame.

4.10 30RQS/RQSY 080-160 Units with Buffer Tank Module

4.3 30RQSY 039-045, Units with and without Hydronic Module, without Filter Frame

Dimensional data and clearance requirements for 30RQSY units.

4.7 30RQSY 080-120 Units with and without Hydronic Module

Dimensional data and clearance requirements for 30RQSY units.

4.11 30QBS/RQSY 039-080 Units with Desuperheater

4.4 30RQSY 039-045, Option 23B, Units with and without Hydronic Module, with Filter Frame

Dimensional data and clearance requirements for 30RQSY units with filter frame.

4.8 30RQSY 140-160 Units with and without Hydronic Module

Dimensional data and clearance requirements for 30RQSY units.

4.12 30RQS/RQSY 090-120 Units with Desuperheater

APPLICATION DATA

10.1 Operating Range, Cooling Mode

Defines the operating ranges for cooling mode for standard units.

10.2 Operating Range, Heating Mode

Defines the operating ranges for heating mode for standard units.

10.3 Water Heat Exchanger Water Flow Rate

10.6 Water Loop Volume

ELECTRICAL CONNECTION

11.1 Control Box

11.4 Recommended Wire Sections

11.5 Field Control Wiring

NOMINAL SYSTEM WATER FLOW CONTROL

13.1 Units Without Hydronic Module

13.6 Pump Pressure/Flow Rate Curve

13.3 Variable Speed Pump - Pressure Differential Control

Control method for variable speed pumps based on pressure differential.

13.7 Available External Static Pressure

13.4 Variable Speed Pump - Temperature Difference Control

Control method for variable speed pumps based on temperature difference.

13.5 Plate Heat Exchanger Pressure Drop

START-UP PROCEDURES

14.1 Preliminary Checks

Essential preliminary checks to perform before unit start-up.

14.4 Supplementary Electric Resistance Heaters

14.2 Actual Start-up

Detailed steps and important considerations for the actual unit start-up process.

14.3 Operation of Two Units in Master/Slave Mode

MAJOR SYSTEM COMPONENTS

15.1 Compressors

15.5 Electronic Expansion Valve (EXV)

15.8 Water Evaporator/Condenser

15.12 Four-Way Valve

15.2 Lubricant

15.6 Moisture Indicator

15.9 Refrigerant

15.13 Control Box

15.3 Air Evaporator/Condenser

15.7 Filter Drier

15.10 High-Pressure Safety Switch

15.4 Fans

15.11 Storage Tank

OPTIONS

Option 116V: HP Variable-Speed Single-Pump Hydronic Module

Hydronic module with variable speed pump for energy savings and control.

Option 49: Partial Heat Recovery

PARTIAL HEAT RECLAIM USING DESUPER-HEATERS (OPTION 49)

18.1 Physical Data with Desuperheaters

18.3 Installation

18.2 Installation and Operation of Heat Reclaim

Instructions for installing and operating the heat reclaim with desuperheater option.

18.4 Control Configuration with Desuperheater Option

Describes efficiency and reclaim priority modes for desuperheater control.

18.5 Operating Limits

STANDARD MAINTENANCE

20.1 Level 1 Maintenance

Simple weekly maintenance tasks that can be performed by the user.

20.4 Tightening Torques for Electrical Connections

20.8 Refrigerant Volume

20.2 Level 2 Maintenance

Maintenance requiring specific skills, covering electrical, hydronic, and mechanical checks.

20.5 Tightening Torques for Bolts and Screws

20.9 Characteristics of R-410A

20.3 Level 3 (or Higher) Maintenance

Advanced maintenance operations requiring manufacturer or authorized agent intervention.

20.6 Air Heat Exchanger Maintenance

20.7 Water Heat Exchanger Maintenance