Carrier HRVXXLVU Installation Instructions Manual
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Carrier HRVXXLVU Installation Instructions Manual

Carrier HRVXXLVU Installation Instructions Manual

Heat recovery ventilator
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HEAT RECOVERY
HRVXXLVU
VENTILATOR

Installation Instructions

NOTE: Read the entire instruction manual before starting the
installation.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury or property
damage. Consult a qualified installer, service agency or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory- -authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings and cautions
included in literature and attached to the unit. Consult local
building codes and the current edition of the National Electrical
Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical
Code CSA C22.1.
Recognize safety information. When you see this symbol
on
the unit and in instructions or manuals, be alert to the potential for
personal injury. Understand the signal words DANGER,
WARNING, and CAUTION. These words are used with the
safety- -alert symbol. DANGER identifies the most serious hazards,
which will result in severe personal injury or death. WARNING
signifies hazards, which could result in personal injury or death.
CAUTION is used to identify unsafe practices, which may result
in minor personal injury or product and property damage. NOTE
is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
INTRODUCTION
The Heat Recovery Ventilator (HRV) is used to exchange indoor
stale air with outside fresh air. The HRV unit is equipped with a
special heat recovery core which transfers sensible heat between
the fresh incoming air and stale exhaust air.
A12520
It is required to locate the HRV in a conditioned space. Special
HRVXXLVU
attention should be given to condensate drain, duct application,
balancing the HRV, and locating unit for easy access and routine
maintenance. The cross- -flow design core allows entering and
leaving air streams to transfer heat energy without mixing.
LOCATION
Inspect Equipment
Move carton to final installation location. Remove the HRV from
carton taking care not to damage unit. Remove all packaging and
inspect unit for damage. Remove parts bag from inside unit. File
claim with shipping company if shipment is damaged or
incomplete.

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  • Page 1: Installation Instructions

    HEAT RECOVERY HRVXXLVU VENTILATOR Installation Instructions NOTE: Read the entire instruction manual before starting the installation. SAFETY CONSIDERATIONS Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause death, personal injury or property damage.

  • Page 2: Component Description

    COMPONENT DESCRIPTION 7. Blowers bring in fresh- -air from outside and exhaust stale- - air to outside. The following listed items are components of HRVXXLVU. See 8. Capacitor required for motor operation. Fig. 1). 9. Condensation tray collects condensate from heat recovery core.
  • Page 3 NOTE: Balancing dampers should be installed in stale- -air exhaust or existing forced- -air system. To operate properly, the fresh- -air and fresh air intake ducts before connecting to the HRVXXLVU supply and stale- -air return from HRV connect directly to return- -air units.

  • Page 4: Wall Control

    5. Connect unit drain to building’s main drain. Provide slight The unit operates continuously when LOW or HIGH is selected slope from unit for run- -off. (see Table 1). Table 1 – Basic Control DAMPER MODE OPERATION POSITION SPEED Closed to outside Air exchange with Open to outside outside...
  • Page 5 Table 3 – Standard Control DEHUMIDISTAT DAMPER AIR EXCHANGE MODE OPERATION FAN SPEED ON LED POSITION POSITION Closed to outside Satisfied Air exchange with outside Open to outside Call for dehumidification High Satisfied Closed to outside Intermittent Call for dehumidification Air exchange with outside Open to outside High Table 4 –...

  • Page 6: Electrical Connections

    Cooling: Table 5 recommends humidity levels to avoid condensation. AUTO - - the ventilator selects the speed based on indoor humidity Table 5 – Recommended Humidity Levels and outdoor temperature. It may cycle on/off every 30 minutes depending on humidity and outside temperature. OUTSIDE DOUBLE ---PANE TRIPLE ---PANE...
  • Page 7 Fig. 9 - - Balancing HRVXXLVU BALANCING HRV Balancing Dampers The dampers for the HRVXXLVU are field supplied and should be Balancing intake and exhaust airflow is very important for proper permanently located in fresh- -air intake and stale- -air exhaust ducts system operation and optimum performance when applying an between HRV and exterior wall (see Fig.

  • Page 8: Ventilation Evaluation

    12” (304 mm) 36” (914 mm) A12452 Fig. 12 - - Balancing HRVXXLVU Measure exhaust air first, it is typically the lowest pressure due to The ventilation capacity of an HRV unit while at maximum speed nature of system and duct work. Next, measure fresh air. If fresh air is defined according to greatest total airflow required.

  • Page 10: Control Board Operation

    In addition, regularly check and clean screens on exterior intake and exhaust hoods when necessary. CAUTION A92385 Fig. 15 - - HRVXXLVU Airflow During UNIT COMPONENT DAMAGE HAZARD Recirculation and Defrost Failure to follow this caution may result in unit component damage.

  • Page 11: Troubleshooting

    TROUBLESHOOTING Table 6 – Temperature/Ohm Relationship TEMP 〈°F/°C) OHMS WARNING 30/--- 1 34,480 32/0 32,630 ELECTRICAL SHOCK HAZARD 34/1 30,760 36/2 29,220 Failure to follow this warning could result in personal injury or death. 38/4 27,470 40/5 26,020 Before installing or servicing system, always turn off, tag and lockout main power to system.
  • Page 12 Be sure to unplug and inspect the unit before proceeding with these steps. Start with problem 1, then problem 2 and so on. Table 7 – Troubleshooting Problem: Possible causes: You should try this: S Erratic operation of the electronic S Unplug the unit.

  • Page 13: High Speed

    Override Test Table 8 – Factory Set Blower Connection High or Low Speed To use override test function, a thermistor must be connected to the MAIN control board. Unit must not be in defrost mode during an override CONTROL BLOWER ELECTRICAL SPEED test.
  • Page 14 Yellow J1--- 4 Catalog No: IM---HRVLVU ---01 Copyright 2012 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 10/12 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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