Electro Industries EC001 Operations Instructions

09/11/2014 NI501 Two-Stage Split Geothermal Heat Pump Installation & Operating Instructions Model: (RT-SE*) Application  Retrofit existing

09/11/2014 9 NI501 Figure 1 Horizontal Closed Loop delivering the CFM required on the nameplate. Especially check the number of registers and the n

09/11/2014 10 NI501 Figure 3 P/T Adapter Mechanical Installation Source Water WARNING LOOP DESIGN IS EXTREMELY IMPORTANT FOR PROPER HEAT PUMP OPER

09/11/2014 11 NI501 Figure 4 – Pressurized Closed Loop with Flow Center – Typical piping arrangement. Figure 5 – Non-Pressurized Closed Loop wi

09/11/2014 12 NI501 To Earth Loop From Earth Loop From Flush Cart To Flush Cart Step 3 From Heat Pump To Heat Pump Step 5 To Flush Cart From Flus

09/11/2014 13 NI501 Step 10 Using a single water pressure gauge, measure the pressure drop at the pressure/temperature plugs across the heat pump he

09/11/2014 14 NI501 Open Loop Well to Well – An open system gets its name from the open discharge of water after it has been used by the heat pump.

09/11/2014 15 NI501 Figure 6: Open Loop Well to Well – Typical piping diagram. Open Loop Freeze Protection Switch – Heat pump installations on

09/11/2014 16 NI501 Desuperheater, Domestic Hot Water General All NHP Series units are equipped with a desuperheater and an integrated circulating

09/11/2014 17 NI501 Figure 7 – Desuperheater Piping, Buffer Tank This is the most effective and efficient arrangement and the recommended instal

09/11/2014 18 NI501 Duct System An air filter must always be installed upstream of the air coil on the return air side of the air handler or furnac

09/11/2014 NI501 Table of Contents Introduction 1 Product Configurator (NC029) 2 Mechanical Specifications 3 Electrical Data 4 Product Dimens

09/11/2014 19 NI501 Coil in Supply Plenum Method Coil in Return Ductwork Method

09/11/2014 20 NI501 Field Installed Thermal Expansion Valve (TEV) – Factory matched air coils are provided with a field installed TEV. Care must be

09/11/2014 21 NI501 ST Duct Sensor – See page 31 for details relating to installing ST sensor above coil. Airflow (CFM) – As listed on the unit nam

09/11/2014 22 NI501 Line Set Size Information Model 10 Feet 20 Feet 30 Feet Suction Liquid Suction Liquid Suction Liquid 040 ⅞” ⅜” ⅞” ⅜

09/11/2014 23 NI501 Condensate Drain – Typical condensate drain installation, shown below. If there is no nearby floor drain, a condensate drain p

09/11/2014 24 NI501 Superheat and Subcooling Comments 1. This is a two TXV system – heating, internal to the main cabinet at the water coil refrig

09/11/2014 25 NI501 Determining Subcooling 1. Measure the temperature of the liquid line on the small refrigerant line (liquid line) feeding the ai

09/11/2014 25 NI501 Unit Operating Conditions – Heat Model StageSource TempSource temp Δ GPM Air temp Δ Amps 240Blower AMPSCFMDischarge pressure at

09/11/2014 26 NI501 Unit Operating Conditions – Cool Model StageSource TempSource temp ∆ GPMAir temp Δ Dry bulbAmps 240Blower AMPSCFMDischarge pres

09/11/2014 27 NI501 Pressure/Temperature Conversion Chart for R-410A PRESSURE (PSIG) TEMP °F PRESSURE (PSIG) TEMP °F PRESSURE (PSIG) TEMP °F PRE

09/11/2014 1 NI501 Introduction When used and controlled properly, geothermal heat pumps can save hundreds of dollars in heating and cooling costs

09/11/2014 28 NI501 Electrical Hookup WARNING DISCONNECT ALL ELECTRICAL POWER BEFORE ELECTRICALLY CONNECTING OR SERVICING THE UNIT. FAILURE TO DI

09/11/2014 29 NI501 Disconnect – field provided external safety disconnect is required, see nameplate max amps. Loop pumps – the loop pump station

09/11/2014 30 NI501 EZGEO Controller EZGEO Features Review attached HC112 HELPS document which lists the various characteristics and capability of

09/11/2014 31 NI501 Utility Load Control Bottom 2-screw terminal block marked blue and blu/wht. Remove the jumper and extend the two wires to the u

09/11/2014 32 NI501 EZGEO Board Connections Visual example only – the exact connections will depend upon operating mode. The ST air supp

09/11/2014 33 NI501 Temperature Sensors Duct Sensor (ST) – install in the warm air plenum at least 12” (31 cm) above heat pump A-coil. Locat

09/11/2014 34 NI501 Gas Furnace Hookup – Mode D See hookup drawing NH501, the gas furnace wiring is at the EZGEO board bottom left terminal block.

09/11/2014 35 NI501 Additional Hookup or Special System Equipment Concerns Additional Room Thermostat Connection Points On the EZGEO board, upper l

09/11/2014 36 NI501 Field Setup Overview Your EZGEO-equipped Northern Heat Pump can be set up at your location to fit most any requirements and con

09/11/2014 37 NI501 to interrupt the compressor and transfer to the sequence shown on applicable mode Figures 2, 3, 4. This only applies when a gas

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09/11/2014 38 NI501 Gas Furnace CFM See previous page on gas furnace hookup for proper programming of ECM motor for the required CFM output. Outd

09/11/2014 39 NI501 Operation Indicators Front Panel LED’s - Hi-limit – when the AUX EL hi-limit probe (automatic reset or manual reset) opens th

09/11/2014 40 NI501 Power On, Startup Before applying power to the heat pump, check the following items: 1. Water supply plumbing to the heat pu

09/11/2014 41 NI501 Operational Tips ICM Board – The ICM board performs the functions controlling the compressor operation: system lockout, compres

09/11/2014 42 NI501 Preventative Maintenance Water Coil Maintenance –In closed loop systems, water coil maintenance is generally not needed. Howev

09/11/2014 43 NI501 Troubleshooting – EZGEO Control Comment – Split, mode D, does not required ST sensor. Certain items below only relate to modes

09/11/2014 44 NI501 Troubleshooting/Repair Helps 1. This EZGEO controller contains several interference suppression components, but as an electron

09/11/2014 45 NI501 Alarm/Fault Active The status LED and alarm output continue until power-off reset. The EZGEO system will attempt to maintain ro

09/11/2014 46 NI501 Troubleshooting – General Troubleshooting Guide for Water-to-Air Geo “Heating” Head pressure Subcool Suction pressure Sup

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09/11/2014 4 NI501 Mechanical Specifications – R410A Two-Stage Compressor MODEL RT-SE-040 (3 ton) RT-SE-052 (4 ton) RT-SE-062 (5 ton) Coax & Pi

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09/11/2014 5 NI501 Electrical Data – Single Phase Model Voltage Compressor Desup. Pump Loop Pump (Ext) Total Min. Max. Fuse/ HACR (60 Hz) RLA LRA F

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09/11/2014 6 NI501 Product Dimensions

09/11/2014 7 NI501 Installation Requirements 1. All installation work must be performed by trained, qualified contractors or technicians. Northern

09/11/2014 8 NI501 Mechanical Installation Overview This NHP Series unit cannot produce airflow and cannot correct airflow problems inherent within