RenewAire HE1.5XRT Energy Recovery Ventilator Instruction Manual

RenewAire HE1.5XRT Energy Recovery Ventilator

WARNING

RISK OF FIRE, ELECTRIC SHOCK, OR INJURY. OBSERVE ALL CODES AND THE FOLLOWING:

1. Before servicing or cleaning the unit, switch power off at disconnect switch or service panel and lockout/tag-out to prevent power from being switched on accidentally. More than one disconnect switch may be required to de-energize the equipment for servicing.
2. This installation manual shows the suggested installation method. Additional measures may be required by local codes an standards.
3. Installation work and electrical wiring must be done by qualified professional(s) in accordance with all applicable codes, standards and licensing requirements.
4. Any structural alterations necessary for installation must comply with all applicable building, health, and safety code requirements.
5. This unit must be grounded.
6. Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment that might be installed in the area affected by this equipment. If this unit is exhausting air from a space in which chimney vented fuel burning equipment is located, take steps to assure that combustion air supply is not affected. Follow the heating equipment manufacturer’s requirements and the combustion air supply requirements of applicable codes and standards.
7. Use the unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.
8. This unit is intended for general ventilating only. Do not use to exhaust hazardous or explosive materials and vapors. Do not connect this unit to range hoods, fume hoods, or collection systems for toxics.
9. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
10. If installed indoors, this unit must be properly ducted to the outdoors.

CAUTION : When an external 10 VDC source control is used, the maximum distance between the EC Motor and 10 VDC source control cannot exceed 33 ft (10 m).
CAUTION: To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc., out of unit.
CAUTION : Make sure clean filters are installed before balancing airflow. Dirty or clogged filters reduce airflow through the unit.
CAUTION : Very low airflow rates may result in fouling of the energy exchanger core. Do not reduce airflow to below 250 cfm per core.

OVERVIEW

DESCRIPTIONS
RenewAire’s light commercial units are offered with optional electronically commutated motors (ECM). EC motors have higher efficiencies with considerable energy savings over a standard permanent split capacitor motor. The ECM offered in RenewAire ERVs are constant torque with a variety of speed control options. The motors operate at fixed speed or variable speed with speed inputs from circuit board-mounted trimming potentiometer(s), panel-mounted potentiometer(s), or 0–10 Vdc analog signal.

OPERATING CONTROLS
A wide variety of low voltage (24 VAC) control schemes may be selected to meet the ventilation needs of the facility. These include time clock, occupancy sensor, carbon dioxide sensor, and others. Building Management Systems (BMS) may also control the unit with external control by others.

PERFORMANCE DATA

HE1.5XIN (H OR V) ECM OPERATING RANGE

HE1.5X-IN ECM

Sample Points
CFM| ESP*| Watts
375| 2.14| 710
481| 2.03| 765
588| 1.90| 814
694| 1.75| 859
800| 1.59| 899
906| 1.40| 933
1013| 1.20| 963
1119| 0.97| 987
1225| 0.71| 1006
1331| 0.42| 1019

HE1.5XRT ECM OPERATING RANGE

HE1.5X-RT ECM

Sample Points
CFM| ESP*| Watts
375| 2.07| 710
481| 1.93| 765
587| 1.78| 814
693| 1.61| 859
800| 1.42| 899
906| 1.22| 933
1012| 0.99| 963
1118| 0.74| 987
1225| 0.46| 1006
1378| 0.00| 1024

INSTALLATION

PRINCIPLES OF EXTERNAL CONTROL
The light commercial units with EC motors are designed for control by a wide variety of low voltage (24 VAC) controls to meet the ventilation needs of the facility. These include time clock, occupancy sensor, carbon dioxide sensor, BMS, and others. These devices are commonly known as 2-wire, 3-wire, and 4-wire devices. RenewAire offers separately the following for standalone control of the ERV:

• Digital Time Clocks TC7D-W and TC7D-E
• Occupancy Sensors MC-C and MC-W
• Carbon Dioxide Sensor/Controllers CO2-W and CO2-D
• Indoor Air Quality Sensor/Controllers IAQ-W and IAQ-D

ELECTRICAL SPECIFICATIONS

Electrical Ratings for ECM Units

 | Phase (unit)| Input Voltage| FLA

(motor)

| MCA (unit)| MOPD (unit)
HE1.5X| 1| 115VAC| 6.7| 15.1| 20
208-230VAC| 3.4| 7.7| 15

WIRING SCHEMATICS

HE1.5X (shown without dampers)

NOTE : Connect the yellow EN wire to the black COM wire to enable the unit.
NOTE : By default the trimming potentiometers on  the board set SPEED 1. A small Phillips head screwdriver can be used to adjust SPEED 1 on the trimming potentiometers.
NOTE : To utilize an external 0–10 VDC analog signal for

SPEED 2:

1. Remove each panel mounted potentiometer by cutting the wires at the potentiometer.
2. Connect the remote analog signal to the yellow wire from the potentiometer.
3. Connect the remote signal ground to the purple wire from the potentiometer.
4. Cap the orange wire from the potentiometer with a wire nut.

OPTIONS EC Motors

3.3.2 TC7D Timer High Speed Field Wiring (Optional Accessory)

OPERATION

AIRFLOW PERFORMANCE
The ERV is factory wired to operate at low adjustable SPEED 1 and variable SPEED 2. Airflows must be measured and the unit’s potentiometers adjusted so that it operates at the airflow volumes specified for the installation. Use the pressure taps in the core and filter doors to determine the airflow. Section 4.3 translates the pressure drop across the energy recovery core to the actual airflow volume.

MEASURING AIRFLOW

Equipment Required

• Magnehelic gauge or other device capable of measuring 0–1.5 in. water of differential pressure.
• 2 pieces of flexible tubing, 1/8″ ID, 1/16″ wall works best.

Cross Core Static Pressure Measurement Instructions

• The individual differential pressures (DP) are measured using the installed pressure ports located in the front of the units core access doors.
• To read SCFM of Fresh Air (FA) install the “high” pressure side (+) of your measuring device to the Outside Air (OA) port and the “low” pressure side (-) to the Fresh Air (FA) port.
• To read SCFM of Room Air (RA) install the “high” pressure side (+) of your measuring device to the Room Air (RA) port and the “low” pressure side (-) to the Exhaust Air (EA) port.
• Use the reading displayed on your measurement device to cross reference the CFM output using the conversion chart.
• Adjust airflow by changing the potentiometer setting for the measured airstream.

AIRFLOW VERSUS PRESSURE DROPS

AIRFLOW PREDICTED BY PRESSURE DROP ACROSS CORE (SCFM)

DP (“H2O)| HE1.5XIN ECM| HE1.5XRT ECM
FA| RA| FA| RA
0.10| —| —| 335| —
0.15| 380| 320| 450| —
0.20| 500| 440| 555| —
0.25| 620| 565| 650| —
0.30| 740| 695| 745| —
0.35| 860| 825| 835| 300
0.40| 980| 960| 920| 380
0.45| 1095| 1095| 1005| 475
0.50| 1215| 1235| 1085| 575
0.55| 1330| 1375| 1165| 685
0.60| 1450| 1515| 1240| 805
0.65| 1565| —| 1315| 935
0.70| —| —| 1385| 1070
0.75| —| —| 1460| 1220
0.80| —| —| 1530| 1375
0.85| —| —| —| 1535

FACTORY ASSISTANCE
In the unlikely event that you need assistance from the factory for a specific issue with the ERV or its ECM Option, make sure that you have the information called for in the Unit Records pages at the front of the ERV manual. The person you speak with at the factory will need that information to properly identify the unit and the installed options.

To contact RenewAire Customer Service:
Call800-627-4499
Email: RenewAireSupport@RenewAire.com
Remember that RenewAire Customer Service can only assist with the ERV and its options, it cannot resolve engineering issues that result from air handling system design by others.

About RenewAire
For over 40 years, RenewAire has been a pioneer in enhancing indoor air quality (IAQ) in commercial and residential buildings of every size. This is achieved while maximizing sustainability through our fifth generation, static- plate, enthalpic-core Energy Recovery Ventilators (ERVs) that optimize energy efficiency, lower capital costs via load reduction and decrease operational expenses by minimizing equipment needs, resulting in significant energy savings. Our ERVs are competitively priced, simple to install, easy to use and maintain and have a quick payback. They also enjoy the industry’s best warranty with the lowest claims due to long-term reliability derived from innovative design practices, expert workmanship and Quick Response Manufacturing (QRM). As the pioneer of static-plate core technology in North America, RenewAire is the largest ERV producer in the USA. We’re committed to sustainable manufacturing and lessening our environmental footprint, and to that end our Waunakee, WI plant is 100% powered by wind turbines. The facility is also one of the few buildings worldwide to be LEED and Green Globes certified, as well as having achieved ENERGY STAR Building status. In 2010, RenewAire joined the Soler & Palau (S&P) Ventilation Group in order to provide direct access to the latest in energy-efficient air-moving technologies. For more information, visit: renewaire.com 201 Raemisch Road | Waunakee, WI | 53597 | 800.627.4499 | RenewAire.com

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| RenewAire HE1.5XRT Energy Recovery Ventilator [pdf] Instruction Manual
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