® WarmFlo Electric Furnace Installation & Operating Instructions HE-H-**-21 Series All HE-H-**-21 Electric Furnaces must use an AH chip code. If you have a chip code other than AH, please call factory for assistance. Application Full WarmFlo capability with outdoor sensor. This provides warm air outlet temperature dial selection and supply air ramp up with the decrease of outdoor temperature.
Table of Contents Configurator 1 General Comments 2 Application 3 Installation Requirements 5 Mechanical Installation 6 Electrical Installation 8 Setup or Programming 11 Operation Indicators 13 Handheld Analyzer/Laptop Software 14 Troubleshooting 14 Replacement Parts 17 10/04/2007 NI802
Configurator HE-T-KW-CW Type H, A, E, N (see below) Cabinet Width 21 = 21” 24 = 24”* kW Size 10 = 9.6 kW 15 = 14.4 kW 20 = 19.2 kW* 25 = 24 kW* 30 = 28.8 kW* Type All models – ECM™ blower motor, setup selection of four cooling sizes, 50% continuous air (fan – on setting). High efficient air circulation at about 50-watt. H = Full WarmFlo capability with outdoor sensor. This provides warm air outlet temperature dial selection and supply air ramp up with the decrease of outdoor temperature.
General Comments Upflow/Downflow/Horizontal The arrangement of refrigerant coil, hydronics coil, and built-in electric elements need to follow specific air direction or airflow rules, but the orientation of this Electric Furnace is not critical. For upflow and horizontal standard air conditioning applications, the A-coil is mounted at the blower outlet with field provided plenum or AC manufacturer’s case coil.
Installation Setup There are specific peg jumpers relating to cooling tons, heating kW, heat pump reversing valve logic, and thermostat type. These must be properly evaluated and selected to match each installation. The “setup or programming” section has all the detailed instructions and selection tables. The WarmFlo controller also has various dial switch selections relating to duct temperature set point, minimum warm air set point, HP compressor ODT shutoff temperature, and ramp up efficiency dial.
Using a wood boiler with the water coil inlet option is an ideal arrangement. If using a forced wood system, caution must be used when allowing the wood warm air to enter through the ECM™ motor blower. The maximum temperature for the ECM™ motor is approximately 120° F. Specification Chart Model Number Cabinet Width kW rating Btu/h Voltage/Phase Circuit Breaker Amps per CB Source Feed Elements Relays Heat CFM* Max. Temp.
Installation Requirements 1. All installation work must be performed by trained, qualified contractors or technicians. Electro Industries, Inc., sponsors installation and service schools to assist the installer. Visit our web site at 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.
Mechanical Installation Clearances and Accessibility Zero clearance is allowed on all sides for combustible materials. However, 36” should be allowed at the front for operation, maintenance, and service. To reduce the risk of rusting and appearance, do not install the unit directly on the ground or on a floor that is likely to be wet. In such environments the unit must be elevated by use of a sturdy non-porous material.
Whether this unit is sitting on or attached to an inlet cabinet, field designed inlet cabinet, or horizontal supports; verify proper support and mechanical strength is provided within the system installation. Rubber isolation pads should be used where possible to reduce sound and vibration transmission. WARNING WHEN HANGING THIS UNIT, THERE MUST BE UNDER SUPPORTS WHICH DISTRIBUTE THE HANGING CHAINS ACROSS THE SURFACE OF THIS UNIT, DO NOT SIMPLY DRILL A HOLE AND USE A COUPLE OF HANGING BOLTS.
Horizontal, Air Conditioning Similar to upflow above, the air conditioning coil is positioned at the blower outlet. Depending upon the coil type and drip pan it is positioned in a field constructed plenum as required. As horizontal, the return air would enter the blower end of the cabinet with a typical packaged 20” x 20” filter cabinet. Horizontal, Heat Pump As emphasized above, the heat pump coil must be at the blower inlet.
WarmFlo Controller – Inside View, Left Board Remote Sensor Duct sensor, A-coil not in supply plenum – the duct sensor (shorter cable, black wire on ST terminal) is installed approximately 24” above (or airflow distance from element) the Electric Furnace or electric elements. Drill a ½” hole, approximately plenum center. If there is not adequate plenum distance, pick the largest distribution duct and install towards the top of the horizontal duct. Locate, common sense, in the maximum warm air stream.
Electric Furnace Control – Inside View, Right Board There are several room thermostat and outdoor unit possibilities. Pick the following paragraph which relates to your installation. Room Thermostat, Air Conditioning Use conventional heat/cool, 1H/1C, thermostat. It can be mechanical, digital, power robbing, battery operated, setback, etc. If mechanical, set the heat anticipator to 0.2. Connect the standard R, W, G, Y stat terminals to the control board HEAT/COOL terminal block with the same letters.
Utility Load Control If applicable for your installation and your utility authorized electric rate, at the bottom of the control board is a blue wire jumper. Simply remove this jumper and extend the two tabs to the power company receiver having N.C. logic. If opposite control logic is required contact factory for other wiring instructions. Setup or Programming It is extremely important the installer properly sets the peg jumpers for all of the following requirements.
heat loss curve or the higher the operating efficiency. The closer a selected setting is to G, the steeper the heat loss curve or the lower overall heat pump system efficiency. If knob is turned to “full” the WF II will automatically put all stages of electric to full capacity. COMMENT: When using with non-heat pump and OT sensing, this dial is also involved with a temperature ramp-up function.
Electric Furnace Control – Inside View, Right Board Room Thermostat Type On the control board left side is a peg jumper which needs to point either to conventional heat/cool or heat pump thermostat. Heat Minimal Blower Speed Selection This is only used with H/C thermostat. With heat pump thermostat, heat jumper has no function. On the right side is a peg jumper for a LO/MED/HI selection.
Red, next to W Call for electric heat, also represents the input signal (yellow wire) to the WarmFlo control board. Green, Cool Conventional H/C stat has an active Y function or heat pump stat reversing valve is in the cool mode (will depend upon proper setup with RV logic jumper). For 2-speed AC this LED is illuminating during high speed. Amber Represents action within ECM™ blower motor. Factory technician troubleshooting only.
Sensor Temperature Calibration - Both remote sensors are digital electronic and factory calibrated. Normally these do not require field calibration or verification. However, if sensor temperature error is determined, there are two field calibration techniques. Proceed with extreme caution. 1. The outdoor sensor can be calibrated with ice (32°F). Notice a small push button next to the sensor terminal block, with the sensor at 32°F, push and hold for approximately ten seconds.
Bad sensor, could disable cooling – depending upon the ODT setting a bad sensor, even during cooling, can affect the ODT of the compressor and the compressor will be off. Temporary fix is to set the ODT dial to “0” position and get the sensor fixed. Verify with plug-in Analyzer and/or no blinking green LED. Analyzer readout, sensor temperature constant 32° or 0° – these two values represent digital bit patterns that are hard to predict an error function. A blinking green light may or may not be experienced.
Replacement Parts @WFS55612 Sensor ST filter 5 ft. @WFS255612 Sensor 25 ft.
Electro-HELPS IV WarmFlo Terminology, Key Terms ST – supply temperature sensor. This is the warm air or duct sensor (boiler – supply outlet water). OT – outdoor temperature sensor. Provides the WarmFlo board with outdoor temperature information. DT – desired temperature to overcome building heat loss, the diagonal line on heat loss curve. The front panel efficiency knob selects one of 8 curves to determine DT at specific real time OT.
- - New 2008 – version 2.38, 10.03, 12.04, 15.03, etc. – once activated, it remains for the completion of the heat call. Thus it only needs to be a temporary jumper (5 seconds or more) to step on all stages. User needs to remember to cycle the roomstat to cancel this E tab function. A potential convenience or secondary usage for this upgraded E tab function is to provide an easy manual means for rapidly bringing up the building or room temperature if the system has been set for non-occupancy.
Note: With an Electro-Mate it is assumed there is always standby or gas furnace. For non-automatic or wood, suggest using EMA and select the desired outlet temperature. ODT dial switch mode – within the program chip default and Analyzer/software programming this function defines the use of the dial switch on the circuit board labeled “ODT”. The dial switch selects the temperature, the setup function selects what the temperature does.
Blower operation – the air handler or fossil fuel furnace blower is operated from its own fan center (G screw). The activation of this “G” input is either directly from a heat pump (total electric system) roomstat “G” screw or in the case of dual heat from the Furnace Interface module (WF-EZ3, LGR4, EM3, etc.). The Interface module and its wiring or association with the room thermostat completely controls the blower.
HANDHELD ANALYZER/LAPTOP SOFTWARE PC software (ET-SOFT-WF) or Handheld (WF-ANZ*) – now has provisions for the following setup or reprogramming functions. Caution – do not attempt to reprogram a forced air (Electro-Mate) chip for boiler application.
When the warm air sensor is calling for more than the heat pump and Stage 1 100% output, Stage 2, etc. turns on. Stage 1 may not necessarily remain at 100%, but can be modulated downward to meet the requirements of the warm air sensor. Also on the next call for heat, the WarmFlo II controller remembers what stages were on and starts at that point. A clamp-on amp meter at the service input can be used to “visualize” the Stage 1 modulation and/or Stages 2, 3, and 4 functions.
Outdoor sensor reference or heating requirement level* – the outdoor digital sensor “tells” the WarmFlo “brain” its desired (DT) value or decision making capability. This is for desired or required supply temperatures greater than the “min. warm air” horizontal line setting. At each internal calculation cycle a DT is determined by reading the outdoor temperature (OT) and then finding the appropriate warm air point on the appropriate or selected diagonal line.
Electric Furnace/Air Handler – Inlet Cabinets Factory available accessory cabinets can make the Electro Electric Furnace/Air Handler more effective and easier to install. Typically these are designed for upflow applications. Side Entry, Filter Cabinet HE-IF-21 Return air duct connection opening is 16” x 19”. There is an access door on both sides, thus this cabinet can be positioned in any direction or orientation to the Electric Furnace/Air Handler.
WARMFLO (OT & ST), HEAT/COOL STAT, A/C (1 SPEED) HE-H-**-** (CHIP CODE "AH") OUTSIDE WHITE (COM) BLACK (OT) RED (RED) SENSOR 0 WHITE (COM) BLACK (ST) RED (RED) T1 60 70 8 0 5 0 8 E RED ST OT COM 0 J2 C5 T4 TB1 HP-ODT T3 T2 R C Y SENSOR 70 T6 DUCT 60 5 RV LOGIC-HI W W T5 Y ROOM THERMOSTAT Y/Y2 K1 Y/Y2 C Y1 T8 RV(O) TB1 C Y1 T5 K4 T7 Y COM A/C DF(W1) T6 J7 O G HP TO HEAT/COOL R LED1 G J1 A1 G SET JUMPER HEAT TB2 OUTDOOR UNIT R HEAT/COOL SW3 ODT
WARMFLO (OT & ST), HEAT/COOL STAT, A/C (2 SPEED) HE-H-**-** (CHIP CODE "AH") DUCT WHITE (COM) BLACK (ST) RED (RED) T1 STAT R W1 G J2 RV LOGIC-HI R R W W G JUMPER ROOM THERMOSTAT C Y1 K1 Y1 T8 TB1 C T5 K4 T7 RV(O) T6 Y1 Y2 C Y1 Y2 C DF(W1) J7 O G HP TO HEAT/COOL Y/Y2 LED1 G Y/Y2 J1 T5 Y2 HEAT R TB2 HEAT/COOL SW3 W2 SET Y1 J1 COOL ODT LED5 Y1 OUTDOOR UNIT A1 A/C Y2 C5 T4 TB1 HP-ODT T3 T2 R C Y SENSOR CONVENTIONAL RED ST OT COM WHITE (COM) BL
WARMFLO (OT & ST), HEAT PUMP STAT, HEAT PUMP (1 SPEED) HE-H-**-** (CHIP CODE "AH") DUCT WHITE (COM) BLACK (ST) RED (RED) T1 STAT R W G J2 C5 T4 HEAT J1 COOL ODT LED5 RV LOGIC-HI R TB2 O Y1 O HP G E SET RV LOGIC-HI HEAT/COOL E RED ST OT COM R C Y T1 T2 T6 T3 TB1 ROOM THERMOSTAT SW4 CAL.
WarmFlo Air Handler (HE-(A,H)-20-2(1,4)), Individual relays WIRING SCHEMATIC AIR HANDLER (WF, AH) MODEL: HE-(A,H)-20-2(1,4) UPCB5632 CS C2 U1 HECBW5845 (NW823) C1 SENSOR CONNECTIONS RV LOGIC-HI J1 4 5 6 7 SC3 A1 R K4 A2 R L1 L2 L1 L2 CB1 CB2 CB2 BK HP CS 7 HI 8 9 10 PWR T11 24 VAC F1 T12 T9 E2 T10 INTERFACE BLUE PC1 BK 150°F E1 R BK 3 K3 2.
WarmFlo Air Handler (HE-(A,H)-15-21), Individual relays WIRING SCHEMATIC AIR HANDLER (WF, AH) MODEL: HE-(A,H)-15-21 UPCB5632 CS C2 U1 HECBW5845 (NW823) C1 SENSOR CONNECTIONS RV LOGIC-HI J1 3 4 GY Y RW 6 7 SC3 A1 J7 ODT T1 HP T2 K3 E T4 CS T15 HI L1 L2 L1 L2 CB1 CB2 CB2 BK 24V 240V HL3 BK 150°F E2 K1 8 9 T11 24 VAC F1 T12 T9 T10 BLU/WHT E3 GY R RELAY 1 2 HL2 BK INTERFACE BLUE STAGING R R E1 R K3 2.
WarmFlo Air Handler (HE-(A,H)-10-21), Individual relays WIRING SCHEMATIC AIR HANDLER (WF, AH) MODEL: HE-(A,H)-10-21 UPCB5632 CS C2 U1 HECBW5845 (NW823) C1 SENSOR CONNECTIONS RV LOGIC-HI J1 3 1 CB1 GY Y RW 8 YG O SC2 SC3 T1 A1 V+ GND LO HI L2 7 8 9 10 PWR T11 24 VAC F1 T12 T9 T10 INTERFACE BLUE PC1 BK HL1 BK BK 150°F RELAY 1 2 GY STAGING TRIAC (K1) K2 NOTES 1. SENSOR CABLES AND CONNECTIONS NOT 2. STAGES SHOWN. 1-4 ARE 24VAC WHEN INACTIVE.
Electro Industries, Inc. Limited Product Warranty Effective February 5, 2009 Electro Industries, Inc. warrants to the original owner, at the original installation site, for a period of two (2) years from date of installation, that the product and product parts manufactured by Electro Industries are free from manufacturing defects in materials and workmanship, when used under normal conditions and when such product has not been modified or changed in any manner after leaving the plant of Electro Industries.
THESE WARRANTIES DO NOT COVER: 1. Costs for labor for removal and reinstallation of an alleged defective product or product parts, transportation to Electro Industries, and any other materials necessary to perform the exchange, except as stated in this warranty. Replacement material will be invoiced to the distributor in the usual manner and will be subject to adjustment upon verification of defect. 2.
