Table of Contents
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INSTALLATION INSTRUCTION FOR HEAT RECOVERY VENTILATOR (HRV)
Shipping and Packing List
Package 1 of 1 contains:
1 - Assembled ventilator
1 - Bag assembly containing:
2 - Drain spout assemblies
4 - Hanging straps
1 - Installation manual
Required Tools
Installation Tools
• tin snips
• assorted screw drivers
• electric drill
• hammer
• wire strippers
• knife
• caulking gun
• smoke pencil
Balancing Tools
• Pitot Tube Balancing Kit [Case, 8 ft. vinyl tubing, Pitot
tube, magnehelic gauge (0 - 0.25"), and mounting plate]
• Pitot Tube with instructions and Digital Manometer (with
resolution of 0 - 0.25" - must read to 1/100ths of an
inch)
Optional Accessories
• 20 Minute Fan Timer
• Wall Mounted Dehumidistat
• Weather hood Kit
• Round Diffuser
4" (100mm)
6" (150mm)
8" (200mm)
• Kitchen Grille
- may be required by code for kitchen applications
- contains removable grease filter
MODELS RNC95/RNC10/RNC20
HEAT RECOVERY VENTILATOR
HEAT RECOVERY VENTILATOR
(HRV units only)
•
large zip ties
•
fabric flexible duct
- class I rated
•
mastic tape
•
alum. foil duct tape
•
zip ties
•
1/2" I.D. drain hose
Application
Heat Recovery Ventilators (HRV) are designed to provide
fresh air while exhausting an equal amount of stale air.
The HRV is equipped with an aluminum core. The device
uses the stale air that is being exhausted to condition the
fresh air as it is being brought in.
General
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
who have jurisdiction before installation.
Table of Contents
Shipping and Packaging List ............................................1
Required Tools .................................................................1
Application ........................................................................1
General .............................................................................1
Engineering Data...........................................................2-4
RNC95 Specifications and Airflow ....................................5
Clearances & Requirements.............................................6
Installation .....................................................................6-9
Application Illustrations..............................................10-12
Electrical ........................................................................13
Remote Control Devices.................................................14
Wiring the Controls .........................................................15
Operation ........................................................................16
Wiring Diagrams .............................................................17
Interlocking HRV to Furnace...........................................18
Air Flow Balancing.....................................................20-21
Troubleshooting ..............................................................22
Maintenance ..................................................................23
* LEAVE FOR HOMEOWNER
NOTE: Due to ongoing research and product development, specifications,
ratings and dimensions are subject to change without notice.
TM
TW-01
0307
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Table of Contents
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Page 1: Table Of Contents
MODELS RNC95/RNC10/RNC20 HEAT RECOVERY VENTILATOR HEAT RECOVERY VENTILATOR INSTALLATION INSTRUCTION FOR HEAT RECOVERY VENTILATOR (HRV) Shipping and Packing List Application Package 1 of 1 contains: Heat Recovery Ventilators (HRV) are designed to provide fresh air while exhausting an equal amount of stale air. 1 - Assembled ventilator The HRV is equipped with an aluminum core. -
Page 2: Engineering Data
Engineering Data - HRV RNC95 HEAT RECOVERY VENTILATOR HEAT RECOVERY VENTILATOR THERMALLY CONDUCTIVE, PATENTED ALUMINUM CORE Performance (HVI certified) The cross-flow heat recovery core transfers heat between the two air streams. Net supply air flow in cfm (L/s) against external static pressure It is easily removed for cleaning or service. - Page 3 Engineering Data - HRV RNC10 HEAT RECOVERY VENTILATOR HEAT RECOVERY VENTILATOR THERMALLY CONDUCTIVE, PATENTED ALUMINUM CORE Performance (HVI certified) The cross-flow heat recovery core transfers heat between the two air streams. It is easily removed Net supply air flow in cfm (L/s) against external static pressure for cleaning or service.
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Page 4: Engineering Data
Engineering Data - HRV RNC20 HEAT RECOVERY VENTILATOR HEAT RECOVERY VENTILATOR THERMALLY CONDUCTIVE, PATENTED ALUMINUM CORE Performance (HVI certified) The cross-flow heat recovery core transfers heat between the two air streams. Net supply air flow in cfm (L/s) against external static pressure It is easily removed for cleaning or service. -
Page 5: Rnc95 Specifications And Airflow
RNC95 Specifications RNC95 Air Flow The RNC95 Heat Recovery Ventilator (HRV) has been Stale air enters the FRONT RIGHT side port. The air will designed to allow the installer to choose between two pos- pass down the front half of the core, then up the back half sible positions on the cabinet for the INDOOR EXHAUST of the core and out the RIGHT REAR port. -
Page 6: Clearances & Requirements
Clearances and Requirements Connecting Appliances to the HRV WARNING The following appliances should not be connected to the HRV: Before installation, careful consideration must • clothes dryer be given to how this system will operate if connected to any other piece of mechanical •... -
Page 7: Weatherhood Installation
Suspending the Unit using the CAUTION Provided Hanging Straps Unit must be installed level to ensure proper condensate drainage. Due to the broad range of installation operational conditions, consideration must be given for the possibility Wide Head Nails of condensation forming on the unit or WIDE HEAD (not supplied) NAILS... - Page 8 Air Duct Design and Installation A well designed and installed ducting system will allow the WARNING HRV to operate at its maximum efficiency. Include a short length of fabric, flex duct or Always try to keep duct runs as short and straight as pos- other non-metallic connector in the “Fresh Air to sible.
- Page 9 Stale Air Exhaust System Drain Connection (HRV Only) The stale air exhaust system draws air from the points in During a defrost cycle, the HRV may produce some con- the house where the worst air quality problems occur. densation. This water should flow into a nearby drain, or Stale air ducts should be installed in the bathroom, be taken away by a condensate pump.
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Page 10: Application Illustrations
Application Illustrations Partially Dedicated System for HRV Stale air drawn from key areas of WARNING home (bathroom, kitchen, laundry) HRV must be balanced. Fresh air supplied to return air duct of air handler DIRECT CONNECTION of the SUPPLY AIR STREAM to the AIR HANDLER COLD AIR RETURN (Stale air drawn from key areas of home) Outdoors Return Air... - Page 11 Simplified Installation for HRV (Return/Return Method) It is mandatory that the air handler blower WARNING run continuously or HRV operation be interlocked with the air handler blower. HRV must be balanced. Check local codes/authority having jurisdiction for acceptance. DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM and EXHAUST AIR STREAM to the AIR HANDLER COLD AIR RETURN *Unit is normally balanced on Return Air...
- Page 12 Fully Dedicated System for HRV Stale air drawn from key areas of ● WARNING home (bathroom, kitchen, laundry) HRV must be balanced. Fresh air supplied to main living ● areas of house Outdoors Stale Air To Outside Fresh Air From Outside Fresh air to house - STALE AIR from various parts of home.
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Page 13: Electrical
Electrical The HRV unit should be plugged into a standard designat- WARNING ed (120VAC) electrical outlet with a ground. The outlet should be serviced by a separate 15 amp/120V circuit. An In order to prevent electric shock when cleaning extension cord should not be used with this appliance. A or servicing the HRV, it is extremely important to qualified service technician should make any required confirm the polarity of the power line that is... -
Page 14: Remote Control Devices
Remote Control Devices Optional Main Controls the circuit board DIP Switches (Refer to "Mode DIP Switch Settings"). The amount of ventilation required in your home will fluctuate according to the activity level in the house. Higher activity levels The Dehumidstat Dial require more ventilation. -
Page 15: Wiring The Controls
Wiring the Controls 2040 ON/OFF Dehumidistat Ventilation Dehumidistat Control (DVC) Remove Remove Red to Red Red to Red factory installed factory installed jumper when jumper when Orange to Orange to installing this Orange installing this Orange control* control* Black to Black Black to Black Low Fan to Blue... -
Page 16: Operation
Operation For most installations the HRV will normally be set to oper- Self Test ate continuously on low speed. To suit various lifestyles, The ventilator will automatically initiate a self test the HRV offers a selection of operating modes. sequence when power is applied. Fan motor is cycled and then damper motor is cycled. -
Page 17: Wiring Diagrams
Wiring Diagrams RNC3 WIRING DIAGRAM LEGEND HIGH VOLTAGE 12V LOW VOLTAGE AUTO FIELD INSTALLED TRANSFORMER INTERFACE 12V LOW VOLTAGE RELAY CONTACTS BLACK FAN MOTOR DETAILS 120V POWER WHITE SUPPLY GREEN MOTOR GREEN AUTO TRANS N/C COMMON N/O CAPACITOR NEUTRAL SPARE LINE FAN O/P GROUND... -
Page 18: Interlocking Hrv To Furnace
Interlocking HRV Operation to an Airhandler/Furnace Blower When using the Interface relay contacts to initiate blower operation on a fur- nace, certain thermostats will initiate the outdoor cooling condenser when R and G are closed. Use this wiring configuration to prevent the Interface relay contacts from initializing the condenser unit. - Page 19 Dehumidistat Operation (HRV only) The optional HRV remote controls include a dehumidistat The dehumidistat switches the ventilator to high speed which controls humidity levels during the heating season. when the moisture level in the building exceeds the The control has a selector knob with set points ranging desired setpoint.
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Page 20: Air Flow Balancing
Air Flow Balancing It is necessary to have balanced air flow in an HRV. The vol- The first step is to operate all mechanical systems on high ume of air brought in from the outside must equal the volume speed, which have an influence on the ventilation system, i.e. of air exhausted by the unit. - Page 21 Pitot Tube and Gauge Pitot Tube Air Flow Balancing Kit DUCT with magnehelic gauge, Pitot tube, hose and carry case. FLOW Pitot tube Magnehelic gauge High Pressure Side Low Pressure Side Placement of Pitot Tube HRV NOTE: Graphic is for illustrative purposes only. Duct connection ports may vary.
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Page 22: Troubleshooting
Troubleshooting Symptom Cause Solution Poor Air Flow • 1/4” (6mm) mesh on the outside hoods is plugged • clean exterior hoods or vents • filters plugged • remove and clean filter • core obstructed • remove and clean core • house grilles closed or blocked •... -
Page 23: Maintenance
Maintenance 1. Inspect Exterior Hoods at least once a month. 4. Motors - Maintenance Free Make sure exhaust and fresh air supply hoods are not 5. Drain (condensate) Line - Clean Once a Year blocked or restricted by leaves, grass, or snow. In winter, it Inspect drain line, drain spout and “P”...
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Questions and answers
Need 2 drain spouts ( with nuts) and also some replacement filters