NorAire NC-FE series User Manual

05/16/2014 NI216
Indoor Unit (IDU)
Installation & Operating Instructions
Model: NC-FE-***
Application
 Air source heat pump with hydronic (or warm water) and chilled
water output
 Equipped with Electro-Boiler boost and Backup
 Dual heat (gas boiler) – mode selection, external backup boiler
and/or gas furnace only possible with Buffer Tank Controller (see
Field Setup section)
 LMC (Load Management Control), PC setup selects –HP and Boiler
or Boiler only
Effective – Version 2.** and above.
System Configuration
 This IDU is designed and configured to work with a standard
outdoor air source heat pump unit (ODU). The specific ODU
combined with this IDU is controlled by Electro Industries and their
associated HVAC distributor. Electro Industries maintains a list of
approved ODU make and model series. The distribution of this list
is limited to the distributors or contractors involved in this program.
 This update includes capability for buffer controller combination.
 Notice – If this IDU is installed with an ODU not shown on the approved list; functional integrity,
performance, support, warranty, and product liability does not apply.
Minimum Qualified Installer
 Since this is a split heat pump configuration, HVAC trade or experienced technicians are required.
- ODU – Responsibility and knowledge for this part of the configuration with refrigerant
line set installation and adjustments related to superheat, sub-cool, and refrigerant charge.
- Hydronic – field provided accessories and configuration relating to circulator pump
sizing, flow rates, buffer tank, zoning, chiller water coil, forced air flow, etc.
Drawings: HX103, NH205, NR203, UAW105, XX017, XX036
DO NOT DESTROY THIS MANUAL. PLEASE READ CAREFULLY AND KEEP IN A SAFE
PLACE FOR FUTURE REFERENCE BY A SERVICE TECHNICIAN.
4003560

NorAire NC-FE series Specifications

General

Brand	NorAire
Model	NC-FE series
Category	Heat Pump
Language	English

Summary

Application

System Configuration

Minimum Qualified Installer

Introduction

Installation Tasks

Highlights key installation steps and attention points.

Control

Explains the IDU's control mechanism via external and internal devices.

Safety Considerations

NorAire Configurator

Mechanical Specifications

Electrical Data

Electrical Data – IDU Control/Pump

Details electrical specs for the IDU's control and internal pump.

Electrical Data – Internal Electro-Boiler

Lists electrical specifications for the internal backup boiler.

Installation Overview, Required System Components

Installation Requirements

Mechanical Installation – Hydronic/Warm Water Output

Water Fill/Purge Procedure

Radiant (Only) Heat Circuit Procedure

Purge or Recheck Defrost Boiler Bypass

Radiant Heat & Cooling/Chilled Water I Circuit Procedure

Cooling/Chilled Water II Circuit Procedure

Mechanical Installation – Outdoor Unit (ODU)

Electrical Hookup

IDU - Power Source

Explains how to connect the IDU to the building's power supply.

Outdoor Unit (ODU) – Power Source

Directs users to ODU manual for power source connection details.

Control Hookup

Describes thermostat and buffer tank controller connection requirements.

Outdoor Unit (ODU) – Control

Outlines low voltage wiring between IDU and ODU control.

Additional Hookup or Special Equipment Concerns

Buffer Tank Controller

Provides recommendations and configuration notes for the BTC.

RV Logic Selection, Control Board Top

Explains how to match reversing valve logic to the ODU.

Utility Interrupt Device, Blue and Blue/Wht Terminal Block

Details the function and connection of the utility interrupt feature.

Option – COM/NC/NO Tabs

Describes the use of Form C contacts for boiler shutoff valve relay.

Configuration, Forced Air Stat-W (Heating)

Specifies configuration for forced air water coil heating with specific kits.

Mode C, Backup Configuration

Details backup configuration requirements for external boilers or furnaces.

Field Setup or Programming

RV Logic Pin Jumper

Explains the RV logic jumper setting on the controller board.

Operating Mode

Describes the rotary dial switch for system configuration modes.

Buffer Tank Controller (HP-BTC) Connected

Notes jumper removal and mode setting for BTC connection.

Outdoor Temp SW OVER

Explains how outdoor temperature affects boiler backup operation.

PC Setup Download

Guides on using software for defaults, monitoring, and configuration.

Utility Interrupt

Mentions PC setup determines utility interrupt action.

Operation Indicators

Front Panel

Describes the meaning of front panel indicator lights like POWER ON, STATUS, ALARM.

Control Board, Back Panel

Details the indicator lights on the controller's back panel.

User Instructions

External Aquastat or Controlling Thermostat

Explains how external thermostats control heating and cooling functions.

Setup & Options

Refers users to other sections for programming and accessory information.

Configuration

Discusses system design, sizing, and the importance of proper operation.

Control Sequence Information

Basic

Outlines six key factors influencing the control sequence analysis.

Internal housekeeping or overrides

Covers internal system checks like ACD, pump operation, and backup modes.

Start Up, Power On

Installation check points

Lists pre-startup verification steps for piping, electrical, and controls.

Use of software CD and accompanying USB cable

Explains the use of diagnostic software for monitoring and configuration.

Temperature sensor monitor

Describes the software feature for real-time temperature sensor monitoring.

SERVICE or ALARM history

Details how to access and interpret the system's service and alarm logs.

Factory defaults

Guides on understanding and managing factory default settings.

GPM Water Flow Calculator

Explains how to measure and calculate water flow rates for system performance.

ODU pressures and R-410A charge verification

Advises on verifying refrigerant charge and pressures as per ODU manual.

Troubleshooting

System logic description

Explains how control sequences are affected by field setup and conditions.

Various voltage checks

Suggests checking key voltage points for diagnostic purposes.

Anti-cycle delay (ACD)

Refers to the control sequence section for information on ACD.

Option PC software CD and provided USB cable

Highlights the diagnostic value of the software for changing delay times.

Hint, testing the control board by itself could be very difficult

Warns about the difficulty of testing the board without external sensors.

Temperature sensor sequence usage

Explains how different sensors are used in sequence calculations.

Bad temperature sensor, power on LED

Describes LED indications for detected sensor faults.

Nuisance service LED low flow or alarm compressor no response LED

Notes that these sequence calculations can be disabled via PC setup.

Accessories

Buffer Tank Controller

Details the HP-BTC controller and its features.

Zone Controller

Lists various zone controller models and their capabilities.

Chilled Water Coils

Presents available chilled water coil options with specifications.

Replacement Parts

Electro Industries, Inc. Residential Limited Product Warranty

TWENTY YEAR (20) LIMITED WARRANTY ON BOILER ELEMENTS AND VESSELS

Specifies the 20-year warranty for boiler elements and vessels.

TWENTY YEAR (20) LIMITED WARRANTY ON SPIN FIN ELEMENTS

Details the 20-year warranty coverage for spin fin elements.

FIVE YEAR (5) LIMITED WARRANTY ON OPEN WIRE ELEMENTS

Covers the 5-year warranty for open wire elements.

CONDITIONS AND LIMITATIONS:

THIS WARRANTY DOES NOT COVER: