NorAire EB-HPH Series Manual

09/06/2018 BI903
Installation & Operating Instructions
Model: EB-HPH*
Application – This is a heating only product. There are no previsions for cooling mode operation
Radiant in-floor heating – Single zone or multiple zone.
Baseboard heating – Special “High Temperature Operation”
Hydronic water to air coil above an air handler – Special “High Temperature Operation”
Indirect domestic hot water (water to water heat exchanger) – Special “High Temperature
Operation”
Mixture of the above scenarios (max of one high temperature zone per application)
Accessories
From the factory, this unit will interface with two thermostats, two pumps / zone valves, a single
stage heat pump compressor, an internal or external electric boiler, an external gas boiler, and
special power company interface for load shedding applications.
Important Installer Information
The NorAire Heat Pump system must be installed by an experienced HVAC installer. Sufficient
knowledge of refrigerant line set installation, system charging, and heating performance testing is
required to perform warranty validation.
Heat Pump Outdoor Unit – manual NI217 contains installation information specific to the heat
pump ODU brand supplied by Electro Industries. Please visit www.electromn.com for
installation information specific to other brands.
DO NOT DESTROY THIS MANUAL. PLEASE READ CAREFULLY AND KEEP IN A SAFE
PLACE FOR FUTURE REFERENCE BY A SERVICE TECHNICIAN.
4003560

09/06/2018 BI903
Table of Contents
Basic Efficiency Information 1
NorAire Concept 2
Basic System Overview 3
Handling & Storage 4
Safety Consideration 4
Product Configurator 5
Specification Table 6
Dimensional Drawing 7
Installation Requirements 8
Installation Overview 9
Mechanical Installation 10
Drawing BX902 11
ODU External TXV Installation 12
Drawing BX903 13
Refrigerant Charging Instructions 14
Calculation Examples – Superheat & Subcool/Temp Rise (BC909) 15
Pressure/Temperature Conversion Chart for R-410A 16
Capacity & Performance Chart (BC907) 17
Electrical Hookup 18
Electrical Data – Indoor Unit 19
Electrical Data – Outdoor Unit 19
Circuit Board Layout 20
Control Wiring Information 21
Understanding the Product Display 28
Configuration Setup 29
Understanding the NorAire Product Display 32
Start-Up Inspection & Observations 42
Additional Hookup or Special Equipment Concerns 43
Operational Indicators 43
Troubleshooting 44
Accessories 46
Replacement Parts 46
Drawings UAW107
UAW108
XX017

09/06/2018 1 BI903

09/06/2018 2 BI903
NorAire Concept
NorAire is an air source heat pump that produces hot water. NorAire takes heat energy from the outside air
and uses a refrigeration to water heat exchanger to transfer that heat energy into water, then distributed in a
variety of ways to heat your home.
What Makes NorAire Versatile? NorAire is a highly efficient, intelligent multi-stage heating system
(ASHP, electric boiler and or external gas boiler). It monitors heat pump run time, outdoor temperature,
return temperature, outlet temperature, and a variety of potential system faults. It also monitors multiple
room thermostats, controls circulating pumps and stages in the various heating sources to operate either
together or independently, all while maintaining a comfortable temperature to the space, and maintaining a
high level of energy efficiency. An integrated 2-zone control allows for built-in system flexibility, including
the option to prioritize a zone and define the zone as high temperature electric boiler assist with priority
allowing one zone to service baseboard heat or indirect domestic hot water while using the other zone for
low temperature applications such as in-floor radiant heating. All of this is customizable via the product
display.
Operating Sequence
This represents a unique and very significant part of the NorAire Heat Pump Boiler philosophy and design.
The NorAire as a single package provides total heating comfort throughout the entire heating season. It does
this in a unique way where the heat loss requirement can be satisfied in one of three sequences. Below is a
walkthrough of this sequence. All settings and adjustments are made through the interactive display.
Sequence I – At the start of a heat call, if the outdoor temperature is greater than lockout (adjustable via
product display), the heat pump portion of the NorAire will be called on to heat the space by itself. At the
same time, a timer is started and displayed on the LCD display (accessible via product display). This timer
signifies the amount of time the heat pump will run on its own.
Sequence II – Continuing from the above sequence, if the heat pump portion of the NorAire alone does not
satisfy the original heat call (as noted above), the “Boost In” timer will expire causing the NorAire system to
shift into “Boost Mode”. This means the Electro-Boiler will be enabled to operate with the heat pump to heat
the space. Meaning they will work together or at the same time. “Boost Mode” will continue throughout the
remainder of the thermostat heat call (provided outdoor temperature is above lockout). During “Boost Mode”,
the NorAire controller will reference a variable known as “Differential Temperature” (accessible via product
display) to determine the “Boost Mode” desired temperature (DT). It will take the “Differential
Temperature” value and add it to the return temperature to formulate its desired temperature. While in “Boost
Mode”, you can monitor DT on the LCD display. You will see the boiler elements stage and module to
achieve and maintain this formulated DT. Example:
System is in “Boost Mode”
Return temp = 80°F
“Differential Temperature” setting = 10° (factory default)
Desired temperature will equal 90°F
As the space is heated, the return water temperature will tend to shift upward, DT will track along with this
shift.
Sequence III – Outdoor temperature falls below lockout temperature. At this point, the NorAire controller
will shut the outdoor unit down and reference a variable known as “Heat Source Below Lockout”. This
variable determines which heat source to use to heat the space when outdoor temperature is below lockout
value. If this variable is set to “Electro-Boiler” (factory default), the built-in (or external) Electro-Boiler will
be the heat source selected. If the variable is set to “External Gas Boiler”, the external gas boiler is used to
heat the space.
NOTE: Once the outdoor temperature drops below lockout and NorAire disables the outdoor unit and
transitions to whichever source is selected (Heat Source Below Lockout), a 4°F rise in outdoor temperature is
required before the NorAire controller will switch back to heat pump operation (Boost Mode) during the
same heat call.

09/06/2018 3 BI903
Basic System Overview

09/06/2018 4 BI903
Handling & Storage
Receiving
It is the receiver’s (person and/or company signing off on the receiving Bill of Lading) responsibility to
inspect for shipping damage. All shipping claims must be made by the receiver.
Storage
This NorAire product packed or unpacked, shall not be exposed to rain, snow, or other adverse
environment. This product is designed for in-building storage and installation only. As much as possible
this Noraire unit must be covered with plastic throughout the construction phase to avoid accumulation of
dust and moisture on the components and the complete control box. The receiver and installing contractor
are responsible for maintaining the cleanliness and quality of this unit until installation is complete and
approved by the user/end customer.
Safety Consideration
WARNING
BEFORE PERFORMING SERVICE OR MAINTENANCE OPERATIONS ON A SYSTEM, TURN OFF
MAIN POWER SWITCHES TO THE INDOOR UNIT. IF APPLICABLE, TURN OFF THE ACCESSORY
HEATER POWER SWITCH. ELECTRICAL SHOCK COULD CAUSE PERSONAL INJURY.
Installing and servicing electric heating equipment can be hazardous due high voltage and electrical
components. Only trained and qualified service personnel should install, repair or service heating and air
conditioning equipment. Untrained personnel can perform the basic maintenance functions of cleaning
coils and cleaning and replacing filters. All other operations should be performed by trained service
personnel. When working on heating and air conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit and other safety precautions that may apply, such as the
following safety measures:
Follow all safety codes.
Wear safety glasses and work gloves.
Use a quenching cloth for brazing operations.
Have a fire extinguisher available for all brazing operations.

09/06/2018 5 BI903
Product Configurator

09/06/2018 6 BI903
Specification Table

09/06/2018 7 BI903
Dimensional Drawing

09/06/2018 8 BI903
Installation Requirements
1. All installation work must be performed by trained, qualified contractors or technicians. Electro
Industries, sponsors installation and service schools to assist the installer. Visit our Website at
www.electromn.com for upcoming service schools.
WARNING
ALL ELECTRICAL WIRING MUST BE IN ACCORDANCE WITH NATIONAL ELECTRIC CODE
AND LOCAL ELECTRIC CODES, ORDINANCES, AND REGULATIONS.
WARNING
OBSERVE ELECTRIC POLARITY AND WIRING COLORS. FAILURE TO OBSERVE COULD
CAUSE ELECTRIC SHOCK AND/OR DAMAGE TO THE EQUIPMENT.
CAUTION
This unit can only be used for its intended design as described in this manual. Any internal
wiring changes, modifications to the circuit board, modifications or bypass of any controls, or
installation practices not according to the details of this manual will void the product warranty,
the safety certification label, and manufacturer product liability. Electro Industries cannot be
held responsible for field modifications, incorrect installations, and conditions which may
bypass or compromise the built-in safety features and controls.
CAUTION
This unit shall not be operated (either heating section or blower) until the interior of the
structure is completed and cleaned. This also means all duct work must be complete with
filter, etc. Manufacturer’s warranty is void if this unit is operated during structure
construction.
CAUTION
Hazards or unsafe practices could result in property damage, product damage, severe personal
injury and/or death.
2. Remember, safety is the installer’s responsibility and the installer must know this product well
enough to instruct the end user on its safe use.
At Electro Industries, the safety of the installer and the end user is of highest priority. Remember,
safety is the installer’s responsibility and the installer must know this product well enough to instruct
the end user on its safe use. Professional installers should be trained and experienced in the areas of
handling electrical components, sheet metal products, and material handling processes. Use them.

09/06/2018 9 BI903
Installation Overview

09/06/2018 10 BI903
Mechanical Installation
1. To ensure proper heat transfer efficiency, it is important that the system is properly designed to have
correct amount of water flow (GPM).
2. It is very important to install this system using the correct pipe and to use “full port” fittings as shown
below.
3. For models including the integrated boiler, install pressure relief valve per attached BX902 drawing.
4. Install expansion tank, air separator with air bleed, and circulating pump in the outlet water piping as
referenced in the mechanical installation overview section above.
5. Fill system with water/glycol when all boiler piping is complete.
6. Install refrigeration line set piping that connects the outdoor unit to the indoor unit.
a. Please refer to the outdoor unit installation manual for specific installation instructions
relating directly to the outdoor unit.
7. Refer to the Refrigerant Charging Procedure below.

2
1
4
3
5
NOTE:
Pressure relief valve included only on
models containing integrated boiler.
ITEM NO. PART NUMBER DESCRIPTION QTY.
1 XEL7850 1" 90 DEG ELBOW 1
2 XTEE7060 PIPE-TEE 1" BLK 1
3 XNPL7780 PIPE-NIPPLE 1" X 2 1/2" STANDARD BLK 1
4 #5453 Valve Relief 30 PSIG .75" NPT Male 1
5 2200-54-00 EB-HP Assembly 1
REVISIONS
REV. DATE DESCRIPTION
A 4/15/16 Released for Production
B 5/17/16 Remove XNPL7783
C 6/14/17 Add relief valve note
CRN
PROPRIETARY AND CONFIDENTIAL
NOTE: THE INFORMATION CONTAINED IN THIS DRAWING
IS THE SOLE PROPERTY OF ELECTRO INDUSTRIES INC. ANY
REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF ELECTRO INDUSTRIES INC. IS
PROHIBITED.
RELIEF KIT
DESCRIPTION
BX902
NUMBER
STATUS
10/20/15
Production
REV
Monticello, MN 55362
[phone]
Electro
Industries
C
DRAWN
DATE
NAME
CHECKED
APPROVED SCALE
NTS
1 OF 1
EB-HP
06/14/17
1 of 1
BX902

09/06/2018 12 BI903
ODU External TXV Installation
Reference detailed drawing BX903.
NOTE: If the heat pump you are installing has a factory installed TXV, do not install the TXV provided
with the NorAire unit.
Give special attention to the following:
1. Remove ODU orifice/piston at the small valve line set connection (detail Y).
2. The supplied external TXV is orientated and installed in the liquid or small line set at the
ODU small valve as shown.
3. Inside, identify the compressor suction pipe and install the TXV capillary tube temperature
bulb as shown (detail X).
4. Bulb must be thoroughly insulated after installation.
5. Ensure nitrogen flow is used with the line set connection/brazing.
6. Wet rag must be used during TXV brazing.
Purge and evacuation comments:
1. Vacuum pump is connected to either ODU line set valve service port.
2. Evacuate system to less than 500 microns.
Procedure for finishing TXV ¼” tube tee adapter to ODU low side service port:
1. This process is similar to “purging” a gauge set hose.
2. Route the ¼” tube flare nut at its final location and close to the ODU low side service port.
3. Connect flare nut to the service port and using wrenches tighten the flare nut to the service
port.
4. Attach low side gauge set hose to new low side service port next to the TXV, the purge low
side refrigerant hose.
5. Open line set valves and continue with the “Refrigerant Charging Instructions”, next page.

X
Y
OUTDOOR
UNIT (ODU)
FIELD
BRAZE *
FIELD
BRAZE *
FIELD
BRAZE
Field Supplied Bi-Flow
Filter/Dryer (verify the unit
does not already have a
filter/dryer installed inside
the unit prior to installation)
TO
INDOOR UNIT
(IDU)
Capillary Tube
Small
Valve
7/8" Lineset
3/8" Lineset
To
Indoor Unit
(IDU)
FIELD
BRAZE*
Large
Valve
Be sure to isolate
capillary tube from
sheet metal housing
Verfiy the "IN" stamped on body is toward IDU
* FIELD BRAZE
You MUST wrap the TXV with a wet
rag BEFORE brazing or you WILL
damage the valve internally.
To Coil
To tube between
Accumulator and Reversing
Valve
From Reversing
Valve
RETURN
DURING PURGE
To purge (vacuum) indoor unit,
rotate valve to this position
to seal off equalizer tube.
SEE PROCEDURE, NEXT PAGE
SUCTION
AT COMRESSOR
DISCHARGE
AT COMPRESSOR
NEW low side
service port
Loop this tube
Attach coupling to low side
service port
(Do not attach to KING valve)
Original Low Side
Service Port
DETAIL X :
Capillary Bulb on Suction LIne
Capillary bulb on expansion valve must
be mounted securely to the larger
diameter copper suction pipe, at 4 or 8
o'clock position, between the
compressor and the accumulator with
the strap from the TXV kit. See TXV
instructions for additional bulb
placement detail. Bulb must be
thoroughly insulated after installation.
DETAIL Y :
Orifice
CRITICAL!!
Must remove orifice during TXV
kit installation. System will not
work correctly if left in place.
H
Completely different assembly 2201-54-04 made to
to get this detail, all other components hiding.
DETAIL H
TXV IN
(toward IDU)
CRN
PROPRIETARY AND CONFIDENTIAL
NOTE: THE INFORMATION CONTAINED IN THIS DRAWING
IS THE SOLE PROPERTY OF ELECTRO INDUSTRIES INC. ANY
REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE
WRITTEN PERMISSION OF ELECTRO INDUSTRIES INC. IS
PROHIBITED.
N-TXV(3,4,5)
DESCRIPTION
2201-54-01
NUMBER
STATUS
11/2/15
Production
REV
Monticello, MN 55362
[phone]
Electro
Industries
F
EB-HP
DRAWN
DATE
NAME
CHECKED
APPROVED SCALE
NTS
1 OF 1
Field Installation Kit
EB-HP
06/22/16
1 of 1
BX903

09/06/2018 14 BI903
Refrigerant Charging Instructions
1. Prior to charging the system with refrigerant, ensure proper pressure leak test and evacuation
have been performed on the system.
2. Depending upon length of line set, additional refrigerant charge may be required. Refer to the
outdoor unit’s installation manual.
3. To achieve proper system performance, it is important to verify system water flow and refrigerant
charge.
4. Verify you have the “Nominal” amount of water flow BEFORE checking the refrigerant charge.
5. Ideal refrigerant charging conditions are between 35 and 60 degrees F.
6. DO NOT just charge the refrigeration system until the sight glass is clear/full. You could end up
overcharging the refrigeration system. The refrigerant sight glass is to be used as a reference point
only.
7. Refer to “Calculation Examples for Superheat and Subcooling” drawing CS102 for proper
attachment of gauges and thermocouples to calculate your superheat and subcooling using your
PT (pressure temperature) chart.
8. Calculate your water temperature rise across your COAX coil using the thermocouples as shown
on drawing CS102.
9. Use the data you have calculated and gathered: outdoor temperature, temperature rise, low and
high refrigerant pressures, superheat, subcooling, and amps on the “Capacity and Performance”
chart to help determine if your system is properly charged by comparing your numbers to the
charts. They should be relatively close.
10. Observe the number of bubbles in your sight glass. A properly charged system may still have
some bubble showing. If your sight glass is completely white with bubbles, you may still need to
add refrigerant to the system. Double check your calculated numbers again to verify them with
the “Capacity and Performance” chart.
11. ADDING REFRIGERANT: Once you have verified your calculations and have determined that
the refrigerant charge is still low, proceed with the following.
12. When adding refrigerant to the system, it is important to only add refrigerant in 4-ounce
increments. Make sure you let the system stabilize for 10 minutes before adding any more
refrigerant or taking any readings to calculate your data on the “Capacity and Performance” chart.
13. Repeat step 13 listed above until your calculated data from the information you have been
gathering is relatively close to the information listed on the “Capacity and Performance” chart to
achieve the proper refrigerant charge in the system.
Note: With an empty refrigeration system due to leaks or needed service repairs, refer to the outdoor
unit factory nameplate refrigerant charge weight/amount.
Note: Pressure tap caps must be installed and tight at all times.

EB-HPH
03/17/17
1 of 1
BC909 02

09/06/2018 16 BI903

05/16/2016 BC907
NorAireHeatPumpBoiler–Capacity&Performance

SizeOT
Air,°F
MINIMUMFLOW
3GPM,90°FRT
NOMINALFLOW
6GPM,90°FRT
MAXIMUMFLOW
7GPM,90°FRT
Btu/hRisePressSH/SCAmpsCOPBtu/hRisePressSH/SCAmpsCOPBtu/hRisePressSH/SCAmpsCOP
3‐TON
6032.421.6417/1265.2/16.511.73.3833.311.1350/12510.6/14.910.14.0333.39.5354/1279.2/14.810.154.01
4727.418.3397/1074.5/19.911.32.9627.39.1351/1045.1/13.210.33.2427.27.8345/1019.1/13.310.23.26
3524.416.3384/915.1/15.411.22.6723.77.9338/895.9/12.310.12.8724.57.0335/876.4/12.410.152.94
2519.813.2361/744.7/14.610.82.2421.07.0326/735.1/9.810.02.5720.45.8325/735.3/8.710.02.49
1516.911.3348/615.8/12.310.61.9418.16.0324/606.5/8.510.02.2117.75.1319/606.2/7.910.02.16
1016.010.7338/544.5/9.810.51.8715.85.3318/556.1/7.710.01.9415.64.5316/546.2/7.19.91.92

SizeOT
Air,°F
MINIMUMFLOW
3.5GPM,90°FRT
NOMINALFLOW
8GPM,90°FRT
MAXIMUMFLOW
10GPM,90°FRT
Btu/hRisePressSH/SCAmpsCOPBtu/hRisePressSH/SCAmpsCOPBtu/hRisePressSH/SCAmpsCOP
4‐TON
6043.424.8458/1205.4/33.317.53.0344.411.1397/11910.8/26.315.53.5044.58.9380/1166.8/22.115.03.62
4735.020.0435/1037.4/31.416.82.5440.410.1386/1037.1/24.715.23.2540.08.0368/1004.5/22.314.63.34
3532.218.4418/864.3/28.416.22.4236.09.0374/884.8/22.514.92.9536.07.2366/835.3/21.114.82.97
2532.018.3411/736/29.116.02.4428.87.2366/705.9/21.914.82.3829.05.8365/734.2/20.514.72.41
1525.514.6397/615.1/2715.71.9825.66.4360/594.9/20.114.62.1424.04.8359/596.3/18.214.62.00
1021.512.3381/554.9/24.015.31.7222.45.6360/544.5/19.514.61.8722.54.5348/534.2/17.314.41.90

SizeOT
Air,°F
MINIMUMFLOW
3.5GPM,90°FRT
NOMINALFLOW
8GPM,90°FRT
MAXIMUMFLOW
10GPM,90°FRT
Btu/hRisePressSH/SCAmpsCOPBtu/hRisePressSH/SCAmpsCOPBtu/hRisePressSH/SCAmpsCOP
5‐TON
6055.631.8461/1164.1/12.727.82.4459.114.8391/1176.8/17.023.43.0954.510.9351/1106.3/7.721.03.17
4746.926.8421/946.1/17.625.52.2549.712.4369/913.8/16.122.52.7047.69.5349/923.8/8.821.42.71
3542.724.4414/804.0/13.225.42.0545.011.3359/794.1/16.422.22.4842.78.6338/773.8/7.921.012.48
2536.520.9400/674.8/14.224.81.8039.69.9348/667.4/14.622.02.2038.97.8326/655.0/8.420.672.29
1532.918.8374/575.6/12.123.61.7033.48.4343/554.9/13.121.91.8733.16.6323/534.4/7.820.651.95
1029.717.0363/515.6/11.823.01.5831.88.0333/514.8/10.921.51.8130.06.0321/484.6/5.920.71.77

500xGPMxDifferential=Btu/h Btu/h=COPVoltsxAmpsx3.41=GPM
   AmpsxVoltsx3.41 500x∆T

NOTE:DatareadingsshownaboveweretakenusingaNordyneODUandareforreferencepurposesonly,yourresultsmayvary.

09/06/2018 18 BI903
Electrical Hookup
Panel breaker sizes – based upon the installed unit capacity, specification pages show model
number/amps/kW, service from appropriate size panel breaker based on NEC code.
Note: NorAire unit includes a factory provided circuit breaker. This qualifies as the local
disconnect at the product or appliance.
Note: Single feed bus kit is available for 15kW and 20kw models, order part number 5701.