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MODELS RNC95/RNC10/RNC20
TM
HEA HEAT RECO T RECOVER VERY Y VENTILA VENTILAT TO OR R
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. The device
1 - Bag assembly containing:
uses the stale air that is being exhausted to condition the
2 - Drain sp
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Engineering Data - HRV RNC95 TM HEA HEAT RECO T RECOV VER ERY Y V VENTILA ENTILAT TO OR R 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. E.S.P (external static pressure) [cfm (L/s)] MOTORS AND BLOWERS Each air stream has one centrifugal blower driven by a common PSC motor. @ 0.1" (
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Engineering Data - HRV RNC10 TM HEA HEAT RECO T RECOV VER ERY Y V VENTILA ENTILAT TO OR R 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. E.S.P (external static pressure) [cfm (L/s)] MOTORS AND BLOWERS Each air stream has one centrifugal blower driven by a common PSC motor. @ 0.1" (
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Engineering Data - HRV RNC20 TM HEA HEAT RECO T RECOV VER ERY Y V VENTILA ENTILAT TO OR R THERMALLY CONDUCTIVE, PATENTED ALUMINUM CORE Performance (HVI certified) Net supply air flow in cfm (L/s) against external static pressure The cross-flow heat recovery core transfers heat between the two air streams. It is easily removed for cleaning or service. E.S.P (external static pressure) [cfm (L/s)] MOTORS AND BLOWERS Each air stream has one centrifugal blower driven by a common PSC motor. @ 0.1" (
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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. (return from building) port. Illustrations in this manual show Fresh outdoor air will enter the LEFT REAR port and pass standard (side mounted)
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Clearances and Requirements Connecting Appliances to the HRV The following appliances should not be connected to the WARNING HRV: Before installation, careful consideration must • clothes dryer be given to how this system will operate if connected to any other piece of mechanical • range top equipment, i.e. a forced air furnace or air handler, • stovetop fan operating at a higher static. After installation, the • central vacuum system compatibility of the two pieces of equipment must be confirme
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31" (787) Suspending the Unit using the Provided Hanging Straps CAUTION Unit must be installed level to ensure proper condensate drainage. Due to the broad range of installation and operational conditions, consideration must be given for the possibility WideHeadNails WIDEHEAD of condensation forming on the unit or (notsupplied) NAILS (notsupplied) connecting ducting. Objects below the installation may be exposed to condensate. STRAPS AND SCREWS (supplied) • At least 3' (1 m) aw
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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. See Installation Diagrams for various installation Building” hard ducted line in order to keep the options. HRV separately grounded (electrically) from the The inner and outer liners of the
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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. kitchen, and laundry room. Applications such as green- houses, atriums, swimming pools, saunas, etc. have CAUTION unique ventilation r
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Application Illustrations HRV Partially Dedicated System for HRV ● Stale air drawn from key areas of home (bathroom, kitchen, laundry) WARNING 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 Stale Air To Outside Return Air 3’ min. recommended Fresh Air From Outside Cool Air Return STALE AIR from various parts of home. Air i.e. bathrooms (
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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 HIGH speed with air handler Outdoors 40" (1m) MINIMUM blower ON. 3’
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Fully Dedicated System for HRV ● Stale air drawn from key areas of home (bathroom, kitchen, laundry) WARNING 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. i.e. bathrooms (if required), kitchens (if required). main living areas... bedrooms, living room, rec. room etc. *Unit is normally balanced on HIGH speed with air handler blower ON. Field-supplied Bal
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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 electrical connections. switched by the safety (di
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Remote Control Devices the circuit board DIP Switches (Refer to "Mode DIP Switch Optional Main Controls 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. Main controls feature a dehumidistat dial. The dehumidistat is Main controls can be mounted in a central location of the home used to reduce high winter humidity levels. The dehumidistat (i.e. beside the f
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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 Circuit Board Circuit Board Terminal Strip** Terminal Strip** Recirculation Control Remote Dehumidistat Red to Red Red to Red Remove factory Factory Orange to installed jumper Oran
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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. Duration: Approximately 1.5 Method of Operation mins. Good - intermittent operation at all times How much ventilation do I need? Better- continuous operation during day or o
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3/4AMPFUSE Wiring Diagrams RNC3WIRINGDIAGRAM LEGEND HIGHVOLTAGE 12VLOWVOLTAGE AUTO FIELDINSTALLED TRANSFORMER INTERFACE 12VLOWVOLTAGE RELAYCONTACTS BLACK 120V FANMOTORDETAILS POWER WHITE SUPPLY TO GREEN MOTOR GREEN AUTOTRANS T2 T3 T4 T5 T6 T7 T8 T9 N/C COMMON N/O CAPACITOR NEUTRAL SPARE LINE FAN O/P T10 T11 T12 T1 C4 C5 SEE GROUND DEFROST DETAIL P1 VDR2 DIRECTMOUNTEDCAPACITOR VDR3 K1 K2 K3 K4 8 RED FACTORY +12V INSTALLED ORANGE JUMPER OBCS DEFROSTDETAILS BLACK VDR1 DEHUMI
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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. This problem can occur at the thermostat because the Y termi- nal is connected to the G terminal internal to the stat. When R and G are closed at the furnace (
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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. The dehumidistat switches the HRV back from 20% to 80% relative humidity (RH). Most people are to low speed ventilation when the humidity has been comfortable when indoor
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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. If the air flow is not properly bal- the HRV itself and the air handler, if applicable. This will pro- anced, then: vide the maximum pressure that the HRV will need to overcome, and allow for a more accura
