REZNOR HACE Efficient Air Curtains Installation Guide
- June 27, 2024
- Reznor
Table of Contents
REZNOR HACE Efficient Air Curtains
Specifications:
- Model: HURACANTM SERIES
- Model Types: Unheated (HAC) and Electric Heat (HACE)
- Mounting Height: 6 feet to 14 feet
- Clearances: Refer to Table 1 for specific clearances
- Dimensions: Refer to Figure 2 and Table 2 for detailed dimensions
FAQ
Q: What should I do if the air curtain is being blocked by the door header?
A: Ensure that the air curtain is mounted flush with the top of the door opening as shown in Figure 1 to avoid blockage.
Q: What is the recommended mounting height for Model HACE?
A: The minimum mounting height for Model HACE is 6 feet above the floor to prevent burns from accessible internal surfaces.
HURACANTM SERIES UNHEATED MODEL HAC AND ELECTRIC HEAT MODEL HACE
DANGER
- Failure to follow safety warnings exactly could result in serious injury, death, or property damage.
- Improper installation, adjustment, alteration, service, or maintenance can cause serious injury, death, or property damage.
- Installation and service must be performed by a qualified technician.
- Be sure to read and understand the installation, operation, and service instructions in this manual.
FOR ELECTRIC HEAT UNITS:
- The unit has hot parts inside. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
- This unit is hot when in use. To avoid burns, do not let bare skin touch hot surfaces.
- Do not operate any unit after it malfunctions. Disconnect power at the service panel and have the unit inspected by a reputable electrician before reusing.
- Do not insert or allow foreign objects to enter any unit opening as this may cause electrical shock, fire, or damage to the unit.
- To prevent a possible fire, do not block air intakes or exhaust in any way whatsoever.
- Use this unit only as recommended by the manufacturer. Any other use may cause electrical shock, fire, or damage to the unit.
GENERAL INFORMATION
- This unit has been tested for capacity and efficiency so as to provide many years of safe and dependable comfort providing it is properly installed and maintained. With regular maintenance, this unit will operate satisfactorily year after year. Abuse, improper use, and/or improper maintenance can shorten the life of the appliance and create unsafe hazards.
- To achieve optimum performance and minimize equipment failure, it is recommended that periodic maintenance be performed on this unit. The ability to properly perform maintenance on this equipment requires certain tools and mechanical skills.
Important Safety Information
- Please read all information in this manual thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit. Pay attention to all dangers, warnings, cautions, and notes highlighted in this manual. Safety markings should not be ignored and are used frequently throughout to designate a degree or level of seriousness.
- DANGER: A danger statement describes a potentially hazardous situation that if not avoided, will result in severe personal injury or death and/or property damage.
- WARNING: A warning statement describes a potentially hazardous situation that if not avoided, can result in severe personal injury and/or property damage.
- CAUTION: A caution statement describes a potentially hazardous situation that if not avoided, can result in minor or moderate personal injury and/or property damage.
- NOTE: A note provides important information that should not be ignored.
WARNING
- This appliance is not intended for use by persons with reduced physical, sensory, or mental capabilities or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
- Children should be supervised to ensure that they do not play with the appliance.
CAUTION
To prevent damage to the unit or to its internal components, it is recommended that two wrenches be used when loosening or tightening nuts. Do not overtighten!
Certification
These air curtains are listed by Intertek for use in the United States and in
Canada. They are certified to bear the AMCA Seal for Air Performance. The
ratings shown are based on May 2020 tests and procedures performed in
accordance with AMCA Publication 211 and comply with the requirements of the
AMCA Certified Ratings Program. The AMCA Certified Ratings Seal applies to
airflow rate, average outlet velocity, outlet velocity uniformity, velocity
projection, and power rating with unrestricted discharge.
Installation Codes
These units must be installed in accordance with local building codes. Local
authorities having jurisdiction should be consulted before installation is
made to verify local codes and installation procedure requirements.
Warranty
Refer to the limited warranty form in the literature bag provided with the
unit. The warranty is void if:
- Wiring is not in accordance with the diagram furnished with the unit.
- The air delivery system is modified.
- Improper maintenance, faulty installation, or unapproved additions or modifications.
Unit Location
CAUTION
Do not install the unit where it may be exposed to water spray, rain, or
dripping water.
NOTE: For model HACE, it is recommended that the intake air temperature be
≥66°F (≥19°C).
The bottom of the air curtain should be flush with the top of the door opening
if possible so that its air stream has a clear path to the open doorway and is
not blocked by the door header before it reaches the open door. If the air
curtain has to be raised above the opening, ensure that for every 1 inch that
the air curtain is mounted above a door header, it is mounted 1/2 inch away
from the wall as shown in Figure 1.
Mounting Height
WARNING
FOR MODEL HACE: If touched, the internal surfaces that are accessible from
outside the unit will cause burns. Suspend the unit a minimum of 6 feet (1.8
meters) above the floor.
The maximum mounting height is 14 feet (4.3 meters). The minimum mounting height is 6 feet (1.8 meters).
Clearances
CAUTION
The air discharge at the bottom of the air curtain MUST NOT be blocked.
The air curtain must be installed so that the clearances listed in Table 1 are provided for with regards to operation, inspection, and service.
Table 1. Clearances
Air Curtain Surface| Minimum Clearance (Inches (mm))
Top, bottom| 2 (51)
Front| 30 (762)
Rear| 0 (0)
Sides| 1/2 (13)
Dimensions
Figure 2. Dimensions (Refer to Table 2)
Table 2. Dimensions
Dimension (See Figure 2 )
| Unit Size (No. of Motors-Door Width (Inches))
1- 36| 1- 42| 1- 48| 1- 60| 2-
72| 2- 84| 2- 96| 3- 108| 3- 120|
3- 132| 4- 144| 4- 156| 4- 168
Inches (mm)
A (overall width)| 37
(940)
| 43
(1093)
| 49
(1245)
| 61
(1550)
| 73
(1855)
| 85
(2159)
| 97
(2464)
| 109
(2769)
| 119
(3023)
| 134
(3404)
| 146
(3709)
| 158
(4014)
| 170
(4318)
B1 (top mounting holes) | 9-1/2 (242)
B2 (top mounting holes) | 36-3/5 (916)| 42-3/5 (1069)| 48-3/5 (1221)|
60-3/5 (1526)| 72-3/5 (1831)| 84-3/5 (2136)| 96-3/5 (2440)| 108-3/5 (2745)|
118-3/5 (2999)| 133-3/5 (3380)| 145-3/5 (3685)| 157-3/5 (3990)| 169-3/5 (4295)
C (rear mounting holes) *****| 8-1/2 (216)
D (nozzle opening)| 2-3/4 (70)
E (nozzle width)| 36
(915)
| 42
(1067)
| 48
(1220)
| 60
(1524)
| 72
(1829)
| 84
(2134)
| 96
(2439)
| 108
(2744)
| 118
(2998)
| 133
(3379)
| 145
(3683)
| 157
(3988)
| 169
(4293)
***** Four (4) 0 .38-inch holes top and rear .
Weights
Table 3. Weights
Model
| Unit Size (No. of Motors-Door Width (Inches))
1- 36| 1- 42| 1- 48| 1- 60| 2-
72| 2- 84| 2- 96| 3- 108| 3- 120|
3- 132| 4- 144| 4- 156| 4- 168
Pounds (kg)
HAC| 90
(41)
| 97
(44)
| 104
(48)
| 117
(54)
| 169
(77)
| 187
(85)
| 203
(93)
| 245
(112)
| 274
(125)
| 290
(132)
| 338
(154)
| 356
(162)
| 374
(170)
HACE| 95
(44)
| 102
(47)
| 109
(50)
| 121
(55)
| 177
(81)
| 195
(89)
| 210
(96)
| 255
(116)
| 284
(129)
| 301
(137)
| 354
(161)
| 372
(169)
| 390
(177)
INSTALLATION
Unpacking and Inspection
CAUTION
DO NOT grasp blower wheels when moving the air curtain as the wheels may bend
and become unbalanced, which can affect safety and performance.
- Remove and save the truss-head screws that secure the return air screen. Remove and save the screen and filter.
- Remove four 3/8-inch lag screws that secure the air curtain to the bottom of the crate.
- The unit was test-operated and inspected at the factory prior to packaging and was in operating condition. If, upon removing it from its packaging, the unit is found to have incurred any damage in shipment, document the damage with the transporting agency and contact an authorized Factory Distributor. If you are an authorized Distributor, follow the FOB freight policy procedures.
Pre-Installation Checklist
- Read this manual and become familiar with the installation requirements.
- Before beginning, make preparations for necessary supplies, tools, and manpower.
- Check to see if there are any field-installed options (refer to Table 4) that need to be assembled/installed prior to unit installation. Ensure that all options ordered are at the installation site.
NOTE: To install controls, refer to the installation instructions provided with the control.
Table 4. Field-Installed Options
Option| Description
CK41–CK51| Mounting struts, 0–20 inch offset
CK52| Quick-mounting plate
CL1| Single-stage 24V thermostat, 50–90°F, with fan switch (model HACE)
CL22| Two-stage 24V digital thermostat, with fan switch (model HACE)
CL23| Two-stage 24V thermostat, heat/cool, programmable (model HACE)
CL83| Two-stage 24V WiFi thermostat, programmable (model HACE)
CL84| Two-stage 24V smart thermostat, heat/cool (model HACE)
CL90| BACnet thermostat, heat/cool, programmable (model HACE)
CM1| Locking cover for option CL1 (model HACE)
CM1B| Locking cover for options CL22 and CL23 (model HACE)
CN13| Commercial door switch
CN14| Industrial door switch
CN15| Remote-mounted HIGH/OFF/LOW selector switch
CN16| Remote-mounted ON/OFF selector switch
CN17| Decorator-mounted HIGH/OFF/LOW selector switch
CN18| Decorator-mounted ON/OFF selector switch
RB7| Touch screen controller (model HAC)
RB8| Touch screen controller (model HACE)
Unit Mounting
WARNING
- Before mounting the unit, check the supporting structure to verify that it has sufficient load-carrying capacity to support the weight of the unit (refer to Weights section).
- Ensure that all field-supplied hardware used to mount the unit is of sufficient size and strength to support the weight of the unit.
- DO NOT add additional weight to a mounted unit.
Mount the unit (see Figure 3) as follows:
-
Mark and drill mounting holes based on chosen method described in step 2.
WARNING
To prevent injury, ensure that assistance is available before attempting to lift the air curtain into place. Use two or more persons, slings and hoist, or lift as necessary. -
Install mounting hardware as follows, lift unit into mounting position, and secure unit to wall or ceiling:
- a. To wall-mount unit (see Figure 3, DETAIL A):
- Install four 3/8-inch bolts or lag screws through back of cabinet to secure air curtain to wall. Use long ratchet extension to avoid having to remove motor/blower plate.
- Install four bolts or lag screws through 7/8-inch holes in motor/blower plate.
- b. To wall-mount unit using optional quick-mounting plate (see Figure 3, DETAIL B):
- Install quick-mounting plate (option CK52) on back of cabinet using field-supplied 3/8-inch fasteners.
- Secure quick-mounting plate to wall using field-supplied 3/8-inch fasteners.
- c. To wall-mount unit using field-supplied side extension brackets (see Figure 3, DETAIL C):
- Install field-supplied side extension brackets on back of cabinet using field-supplied fasteners.
- Secure side extension brackets to wall using suitable field-supplied fasteners.
- d. To suspend unit using field-supplied threaded rods (see Figure 3, DETAIL D):
- Install 3/8-16 threaded rod into threaded insert in each corner of cabinet top. Ensure that rods do not extend more than 3/4 inch into cabinet.
- Connect threaded rods to ceiling support using suitable field-supplied fasteners.
- e. To wall-mount unit using field-supplied angle brackets (see Figure 3, DETAIL E):
- Install field-supplied angle brackets on top of cabinet using field-supplied fasteners. For proper sizing, provide distance from wall to back of air curtain (maximum offset = 20 inches).
- Secure angle brackets to wall using suitable field-supplied fasteners.
- f. To wall-mount unit when installing new door using field-supplied angle brackets (see Figure 3, DETAIL F):
- Raise door canister above top of opening so that air curtain can be installed below.
- Install field-supplied angle brackets on top of cabinet using field-supplied fasteners. If air curtain is not wide enough to clear door track, install optional mounting struts (CK option) to extend mounting points for clearance past canister.
- Secure angle brackets to wall using suitable field-supplied fasteners.
- g. To wall-mount unit in front of door canister or other obstruction using field-supplied angle brackets (see Figure 3, DETAIL G):
- Install field-supplied angle brackets on top of cabinet using field-supplied fasteners. If necessary for proper positioning of air curtain, use field-supplied 3/8-16 threaded rods as shown.
- Secure angle brackets to wall using suitable field-supplied fasteners.
- Install suitable side baffles on both sides of air curtain to seal gaps as shown in Figure 3, DETAIL H. Use permanent barriers or PVC strips extended to floor for maximum effectiveness.
-
Install return air screen and filter that were removed when unpacking unit.
Electrical Connections
CAUTION
-
Ensure that all wiring is in accordance with the wiring diagram provided with the unit.
All electrical wiring and connections, including electrical grounding MUST BE made in accordance with the National Electric Code ANSI/NFPA No. 70 (latest edition) or, in Canada, the Canadian Electric Code (Part 1, CSA C.22.1). In addition, the installer should be aware of any local ordinances that might apply. -
Check the rating plate on the unit for the supply voltage and current requirements.
Route the supply wiring and any control wiring through the electric supply entrance shown in Figure 2 and use wire nuts to make connections inside the unit’s junction box.
CONTROLS
Refer to Table 4 for specific control option descriptions. Refer to the
Electrical Connections section for control wiring connections.
Automatic Door Switch
Two door switch options are available to automatically start and stop the air
curtain as its door opens and closes. An integral time-delay relay that is
factory-set at 30 seconds (field-adjustable up to 100 seconds) ensures that
the unit does not continually cycle in high-traffic areas.
Manual Control Switch
Various manual control switch options are available—ON/OFF/HIGH/LOW/AUTO for
either model and HEAT ON/HEAT OFF for model HACE. Selector switches and
SmartTouch control are available.
Disconnect Switch
A non-fused disconnect switch option is available to disconnect all power from
the unit so that it can be serviced or inspected. For units that would
typically require more than one power source due to high amp draws (according
to the National Electric Code), branch fusing can be added so that the unit
can be run from a single power source.
OPERATION
Pre-Startup Checklist
Check the following before startup:
- Check suspension—unit must be secure and at desired angle.
- Check electrical wiring—ensure that all wire gauges are as recommended—verify that fusing or circuit breakers are adequate for load use.
- Check polarity—verify that line voltage exists between black (live) wire and earth ground.
- Place literature bag that contains limited warranty form, this manual, and any control or optional information in accessible location near unit.
Startup
Start up the unit as follows:
- Turn ON electric power to unit.
- Place disconnect switch (if used) in ON position. 3. Place manual control switch (if used) in ON position.
MAINTENANCE
WARNING
- Ensure that electrical power is OFF before servicing the unit
- Eye protection is recommended when cleaning the unit.
CAUTION
- When any service is completed, ensure that the unit is reassembled correctly so that no unsafe conditions are created.
- If replacement parts are required, use only factory-authorized parts.
NOTE: To ensure long life and satisfactory performance, a unit that is operated under normal conditions should be inspected and cleaned at the start of each heating season. If the unit is operating in an area where an unusual amount of dust or soot or other impurities are present in the air, more frequent maintenance is recommended.
The unit is designed to operate with a minimum of maintenance. However, to ensure long life and satisfactory performance, routine service is recommended. When servicing, follow standard safety procedures and the specific instructions and warnings in this manual. The following is designed to aid a qualified service person in maintaining and servicing this equipment.
Service Checklist
At a minimum, perform the following annually:
- Clean all dirt, lint, and grease inside and out.
- Replace any parts that do not appear sound.
- Check for any damaged wiring and replace as necessary.
- Adjust steering vane as necessary.
- Check for proper blower motor rotation.
Maintenance Procedures
Cleaning Return Air Screen and Filter
Periodically clean return air screen and filter (see Figure 4). The cleaning
schedule will vary per location depending on the amount of particles in the
air. The holes in the screen must be free from obstructions to ensure that the
blower(s) can get enough air to function properly.
- Turn OFF electrical power to unit.
- Remove and save screws that secure return air screen and remove screen and filter from unit.
- Flush filter and screen with hot water or steam.
- Allow filter and screen to dry.
- Install filter and return air screen on unit and secure screen using existing screws.
- Turn ON electrical power to unit and check for proper operation.
Steering Vane Maintenance
The unit’s steering vane is factory-set and does not normally require
adjustment. However, in a location with high winds, the steering vane may be
adjusted to counteract the wind.
- Turn OFF electrical power to unit.
- Adjust steering vane (see Figure 4) as necessary:
- a. Wrap steering vane with rag to prevent scratching it.
- b. Grip left end of vane with channel locks (see Figure 5) and rotate it in direction of desired air flow.
- c. Repeat steps 2a and 2b for right side of steering vane.
- Clean steering vane as necessary by wiping it down with damp rag. 4. Turn ON electrical power to unit and check for proper operation.
Blower and Motor Assembly Maintenance
Clean, repair, or replace (as necessary) blower and motor assembly (see Figure
4) as follows:
- Turn OFF electrical power to unit.
- Remove and save screws that secure return air screen and remove screen and filter from unit.
- Clean any dirt, lint, and/or grease from blower and motor assembly and ensure that motor shaft and blower wheel rotate freely.
- If blower and/or motor require repair or replacement:
- a. Mark and disconnect blower motor wires (refer to Electrical Connections section).
- b. If blower housing is held in place by support strap, drill out top and bottom support strap rivets and rotate strap. c. Remove and save four blower housing screws for each blower housing.
- d. Disconnect each motor’s motor ground strap from motor mount.
- e. For each motor, loosen motor clamp on each side of motor and remove entire blower and motor assembly from blower and motor panel.
- f. Loosen motor shaft setscrews and disassemble motor(s) from blower(s). Repair/replace/clean components as necessary. If replacing motor, ensure that motor’s terminal block is on right facing down.
- g. Reassemble motor(s) and blower(s), tighten motor shaft setcrews, and position entire blower and motor assembly on blower and motor panel. For each motor, secure motor clamp on each side of motor. h. Connect each motor’s motor ground strap to motor mount and secure each blower housing using existing screws. If blower housing is held in place by support strap, secure strap in place using rivets.
- Connect blower motor wires.
- Install filter and return air screen on unit and secure screen using existing screws.
- Turn ON electrical power to unit and check for proper operation.
Electrical Component Replacement
Replace any faulty control or relay as follows:
- Turn OFF electrical power to unit.
- Remove and save screws that secure return air screen and remove screen and filter from unit.
- Mark and disconnect component’s wires (refer to Electrical Connections section).
- Remove and save component’s fastening hardware and remove existing component.
- Install replacement component and secure using existing fastening hardware.
- Connect component’s wires.
- Install filter and return air screen on unit and secure screen using existing screws.
- Turn ON electrical power to unit and check for proper operation.
Electric Heat Coil Replacement (Model HACE)
Replace any faulty electric heat coil (see Figure 4) as follows:
-
Turn OFF electrical power to unit.
-
Remove and save screws that secure return air screen and remove screen and filter from unit.
WARNING
To prevent injury, ensure that assistance is available before attempting to lift the blower and motor panel, with the blower and motor assembly attached, for unit size 2-72 and larger. -
Remove and save screws that secure blower and motor panel to cabinet. Remove panel with blower and motor
assembly—a two-person task for unit size 2-72 and larger. -
Mark and disconnect electric heat coil wires (refer to Electrical Connections section).
-
Remove and save three screws that secure existing electric heat coil to back of blower and motor panel and
remove coil. -
Position replacement electric heat coil on back of blower and motor panel and secure using existing screws.
-
Connect replacement electric heat coil wires.
-
Install blower and motor panel with blower and motor assembly on cabinet and secure panel using existing screws.
-
Install filter and return air screen on unit and secure screen using existing screws.
-
Turn ON electrical power to unit and check for proper operation.
TROUBLESHOOTING
Table 5. Troubleshooting
Symptom| Probable Cause| Remedy
A . Unit will not start| 1 . No power to unit| Turn ON power and ensure
disconnect switch is in ON position
2 . Loose or incorrect electrical connection| Ensure that all wiring
connections are sound and in accordance with wiring diagram provided with unit
3 . Blown fuse(s)| Replace fuse(s)
B . Insufficient air or no air produced| 1 . Dirty intake screen and/or
filter| Clean intake screen and/or filter; replace as necessary
2 . Restricted air intake| Remove obstruction or move air curtain
3 . Blower wheel not rotating| Check and tighten shaft setscrew(s) as
necessary
4 . Restricted air discharge| Remove obstruction (e .g ., door header,
automatic door opener, etc .) or move air curtain
5 . Air discharge deflecting into wall| Ensure that for every 1 inch air
curtain is mounted above door header, it is mounted 1/2 inch away from wall
6 . Negative air pressure| Equalize building pressure
7 . Blower motor not operating| Repair or replace blower motor
C . Excessive blower noise and/or vibration| 1 . Loose blower wheel| Tighten
setscrew on motor shaft
2 . Loose air intake| Tighten air intake screws
3 . Dirty intake screen and/or filter| Clean intake screen and/or filter;
replace as necessary
4 . Dirty blower wheel| Remove and clean blower wheel
5 . Damaged blower or unbalanced blower wheel| Repair or replace blower and/or
blower wheel
6 . Worn out blower motor| Replace blower motor
7 . Blower wheel hitting or rubbing on blower housing| Repair or replace bent
motor shaft and/or clear housing from blower wheel path
D . Control(s) not operating properly| 1 . Control(s) not set properly| Ensure
that control(s) is set properly
2 . Loose or incorrect electrical connection| Ensure that all wiring
connections are sound and in accordance with wiring diagram provided with unit
3 . Faulty control(s)| Repair or replace control(s)
E . Air not directed properly| 1 . Improper nozzle direction| Ensure that
nozzle directs air outside
2 . Improper nozzle angle| Ensure that nozzle directs air at desired angle
(optimum angle is 15 degrees)
F . Insufficient heat or no heat produced by electric heat unit| 1 . Time-
delay relay and/or control(s) not set properly| Ensure that time-delay relay
and/or control(s) are set properly
2 . Loose or incorrect electrical connection| Ensure that all wiring
connections are sound and in accordance with wiring diagram provided with unit
3 . Faulty time-delay relay and/or control(s)| Repair or replace time-delay
relay and/or control(s)
4 . Burned out heating element(s)| Replace heating element(s)
5 . Insufficient air movement over heating element(s)| Check probable causes
for symptom B and implement remedies as necessary
6 . Faulty contactor| Repair or replace contactor
7 . Ambient temperature too low| Ensure that intake air is ≥66 ° F
(recommended minimum)
G . Electric heat unit producing too much heat| 1 . Control(s) not set
properly| Ensure that control(s) is set properly
2 . Insufficient air movement over heating element(s)| Check probable causes
for symptom B and implement remedies as necessary
3 . Incorrect supply voltage| Ensure that supply voltage is in accordance with
unit rating plate
4 . Faulty control(s)| Repair or replace control(s)
INSTALLATION RECORD
(TO BE COMPLETED BY INSTALLER)
For service or repair, contact the Installer. For additional assistance, contact the Distributor. For more information, contact your Factory Representative.
For more information on Reznor HVAC products:
- Contact your local Reznor representative at 1-800-695-1901
- Refer to the technical specifications, manuals, and consumer materials found at www.reznorhvac.com
Specifications and illustrations subject to change without notice or incurring
obligations. Latest version of this manual is available at
www.reznorhvac.com.
©2024 Nortek Global HVAC LLC, O’Fallon, MO. All rights reserved.
HAC-HACE-IOM (06-24) 1047119-0
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>