Curtron CFD-TQ-2-36-1, CFD-TQ-2-42-1, CFD-TQ-2-48-1, CFD-TQ-2-60-1, CFD-TQ-3-60-1 Installation Manual

800•833•5005

Curtron Products • 5350 Campbells Run Road • Pittsburgh, PA 15205-9738 • 412.787.9750

• Fax: [phone] • Web Site: www.curtronproducts.com • E-Mail: [e-mail]

OTHER

CURTRON

PRODUCTS

POLAR-PRO™

SWINGING DOORS

CASER

COOLER CURTAINS

CURTRONIZER

™

STRIP DOORS

TEMP KEEPERS™

COOL KEEPERS

™

STRIP DOORS

Make Food Products

Your Number One Priority!

RACK COVERS

MODEL ENCLOSED:

❏ CFD-TQ-2-36-1
❏ CFD-TQ-2-42-1
❏ CFD-TQ-2-48-1
❏ CFD-TQ-2-60-1
❏ CFD-TQ-3-60-1

❏ IBD-TQ-2-36-1
❏ IBD-TQ-2-42-1
❏ IBD-TQ-2-48-1
❏ IBD-TQ-2-60-1
❏ IBD-TQ-3-60-2

❏ CFD-HH-2-36-1-3S
❏ CFD-HH-2-42-1-3S
❏ CFD-HH-2-48-1-3S
❏ CFD-HH-2-60-1-3S
❏ CFD-HH-3-60-1-3S

INSTALLATION INSTRUCTIONS

AIR DOORS

Make Food Products

Your Number One Priority!

Copyright © 2007 Curtron Products Catalog No. CFD/IBDAD 06-07

2

3

Thank you for choosing a Curtron quality product.

UNCRATING

Carefully examine the carton(s) for damage before opening. If the carton is
damaged, immediately notify the shipping company.

• Remove all protective packaging.

• Remove the cover housing by lifting vertically.

Enclosed is a packet of self-tapping screws which will be used to attach the
cover housing to the mounted chassis.

CAUTION: LIFT THE UNIT BY GRASPING THE INLET RINGS ON THE

BLOWER HOUSING WITHOUT TOUCHING THE BLOWER WHEELS.

Excess weight on the blower wheels may cause improper alignment and bal­ance of the motor shaft and blower wheels.

WARNING:TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR

INJURY TO PERSONS, OBSERVE THE FOLLOWING:

A. Use this unit only in the manner intended by the manufacturer. If you

have any questions, contact the manufacturer.

B. Before servicing or cleaning unit, switch power off at the service panel

and lock service panel to prevent power from being switched on acci­dentally.

C. Installation work and electrical wiring must be done by a qualified person

in accordance with all applicable codes and standards, including fire­rated construction.

D. When cutting or drilling into wall or ceiling, do not damage electrical wiring

and other hidden utilities.

E. Do not operate this fan with any solid state speed control device.

INDOOR AND OUTDOOR MOUNTING FOR CURTRON AIR DOORS

INDOOR MOUNTING - Environmental/Insect/ Dust Control

OUTDOOR MOUNTING - Insect/ Dust Control

NOTE: The air door is weatherproof; therefore, no special covering is required

for outdoor mounting.

IMPORTANT: A minimum of 4” is required above the top of the air door for the
installation and removal of the cover housing.

1. Install the air door so that nothing interferes with the air stream when it is
deflected 20° to either side. If the air stream strikes any obstruction, for
example, the top edge of the doorway, a structural beam or a door opening
device, its efficiency will be reduced. See Figure 1. On electrically heated
units there should be a minimum clearance of at least 4” between the side
of the unit and any combustible material, if the unit is enclosed in the ceiling
or a decorative cover.

2. The outlet nozzle should be no more than 1” above the top of the doorway
opening. See Figure 2A.
If the air door must be mounted higher, then it should be spaced out from
the wall 3/8” for every inch the unit is moved up above the doorway open­ing. Any void between the air door and the wall must be sealed (use foam,
plastics or similar packing) for best performance. See Figure 2B.

Figure 1

Figure 2B

Figure 2A

FLUSH MOUNT

AIR

DOOR

1”

TOP OF
DOORWAY

3”

2”

SPACER

SEAL

SPACER

3/8”

3/4”

4” MINIMUM SPACE REQUIRED

AIR INTAKE

AIR

DOOR

AIR

FLOW

MAX.

20°

MAX.

20°

OUTLET NOZZLE

4

5

MOTOR /BLOWER MOUNTING

Drill and install the mounting hardware (sup­plied by others). The keyhole slots in the back­plate accommodate 1/4” mounting hardware.

See Figure 4.

3. Do not fully tighten the mounting screws.

4. Lift the motor/blower assembly by the sheet
metal frame over the door with the outlet
nozzle facing down. DO NOT LIFT BY THE

BLOWER WHEELS.

5. Slip the motor/blower
assembly over the 4
mounting screws.

6. Tighten the 4 mount­ing screws for a
secure attachment.

See Figure 5.

7. Replace cover with
sheet metal screws.

AIR DOOR

BACKPLATE

8 KEYHOLE

MOUNTING SLOTS

Figure 3

Select and mark two vertical holes on each end of the backplate. See Figure 3.
The mounting holes and hardware must be capable of supporting a minimum
of three times the net weight of the air door.

See Table 1.

If sufficient support is not available, go to Optional Mounting.

AMBIENT ELECTRIC

MODEL NET WEIGHT NET WEIGHT

LBS. LBS.

TABLE 1

CFD-TQ-2-36-1 70 75
CFD-TQ-2-42-1 80 85
CFD-TQ-2-48-1 82 87
CFD-TQ-2-60-1 97 102
CFD-TQ-3-60-1 110 115

1/4”

1/4”

Figure 5

LINE-UP KEYHOLES ON

ALL 4 SCREWS

PUSH

BACKPLATE

TOWARD WALL

SLIDE BACK­PLATE DOWN

TIGHTEN ALL

4 SCREWS

If the location of the keyhole slots on the backplate do not provide suitable
support, locate and mark the best alternative location on the wall.

Transfer the marks to the backplate of the air door.

Before drilling holes in the backplate of the air door, check to make sure the
new holes will not interfere with the internal components of the air door.

Drill the 4 holes in the wall and 4 holes in the backplate.

Lift the motor/blower assembly by the sheet metal frame over the door with
the outlet nozzle facing down. DO NOT LIFT BY THE BLOWER WHEELS.

Install the 4 mounting screws (supplied by others).

OPTIONAL MOUNTING

ELECTRIC WIRING

CAUTION: Electrical Shock Hazard
Disconnect power source whenever working on unit. WARNING: To
reduce risk of fire or electric shock, DO NOT use this fan with any
solid state speed control device.

1. Make sure the correct voltage, as marked on the unit, is used.

2. Connect the proper size conductor wire (supplied by others) to the pigtail
leads in the junction box.

See Figure 6. For motor amp ratings see Table 2.

3. Connect conductor wire to power source.

4. An optional knock-out is supplied on the left-hand side of the cover hous­ing to connect wiring from the left-hand side.

Figure 6

Table 2

Weights are the same for comparable

length units in CFD-HH and IBD-TQ Series

Figure 4

JUNCTION BOX

Standard Amps for Amps for

Motor Voltages1/2 Motor3/4 Motor

120, 1ø, 60 hz 7.2 7.5

208, 1ø, 60 hz 4.0 3.8

240, 1ø, 60 hz 4.0 3.8

460, 1ø, 60 hz N/A 1.8

6

The heater circuit may be controlled by a remote
thermostat or a remote mounted three position ­fan only/off/fan with heat. See Figure 7.

Connect the proper wires (located in the junction
box) to the terminals of the thermostat or three
position switch. See wiring diagram located in
the inside of the cover housing. See Figure 8.

Overheating protection is provided by thermal
cutouts built into the heater coil assembly.

ELECTRICALLY HEATED MODELS

Remote Thermostat Or
Remote Three Position

Switch

Figure 7

Figure 8

IMPORTANT: All electrical wiring

should be performed by qualified
personnel and done in accordance
with local codes and regulations.

CAUTION: Disconnecting more than one power supply

may be required to de-energize the unit.

Table 3

Aluminum

Cover Housing

Bottom 4

Housing

Screws

Motor/Blower

Assembly

Power

Source

Wires

Top 4 Housing Screws

AMP DRAW OF ELECTRIC HEAT

Voltage

7.5 kw 10 kw 15 kw

208v 1ø - 60 hz 36.1 48.0 72.0

240v 1ø - 60 hz 31.4 41.7 62.5

208v 3ø - 60 hz 20.9 27.8 41.6

240v 3ø - 60 hz 18.1 24.1 36.1

480v 3ø - 60 hz 9.0 12.0 18.0

Note: When amp draw of motors and heaters are in

excess of 48 amps, two power supplies are required.

7

AIR DIRECTIONAL VANES ADJUSTMENT

AIR FLOW ADJUSTMENTS

Adjustment of the air directional vanes may be made by grasping each vane with
pliers or channel locks and twisting. It is recommended to place a rag or newspa­per between the plier jaws and the vanes to prevent scratching.

If the vanes will not twist with a pair of pliers, it may be necessary to remove the
cover housing and loosen the 2 vane mounting screws located on each end of the
outlet nozzle. ALWAYS DISCONNECT THE POWER SOURCE BEFORE

REMOVING THE COVER.

1. With the air door operating and door in its full open position, check to

see that nothing is obstructing the air flow at the discharge nozzle.

2. Find the air stream split location. Hold a handkerchief, by the corner,

approximately 12” above the floor. Gently move the handkerchief back

and forth in the doorway. Make sure the air is being directed to both the

inside and outside. See Figure 9. The split location is indicated when the

handkerchief is vertical with minimal or no fluttering. See Figure 9.

3. FOR INDOOR MOUNTING - The split location should be approximately

3” outside the doorway and 12” above the floor. See Figure 10.

4. FOR EXTERIOR MOUNTING - The split location should be approxi-

mately 6” outside the doorway and 12” above the floor. See Figure 11.

OUTSIDE INSIDE

12” Minimum

Figure 9 Figure 10

Figure 11

INSIDE

INSIDE

OUTSIDE

OUTSIDE

12” Above

Floor

12” Above

Floor

3”

6”

8

OPTIONAL CONTROLS

If an automatic door switch (rated at 22 amps) or a start/stop push button sta­tion (rated at 24 amps) is used, refer to the wiring diagram found on the inside
of the housing for proper wiring.

CAUTION: disconnect the main power supply before installing the cover.

When the installation of the motor/blower section and wiring is complete, slide the
cover over the assembly and fasten with the 8 screws that are provided: 4 on the
top and 4 on the bottom. finally, connect the main power supply. See Figure 8.

WARNING: The motor has internal self-resetting thermal overload protec­tion. Always disconnect the power source before servicing.

MOTOR /BLOWER WHEEL ASSEMBLY/COVER HOUSING

To keep your Curtron Air Door operating at peak efficiency, semi-annual
cleaning of the blower wheels and cover housing is recommended. The
housing can easily be removed for access to the motor/blower assembly by
removing the cover housing screws. See Figure 8. Remove dust and dirt
build-up from the blower wheels and housing. The motor is totally enclosed
and permanently lubricated, and does not require any additional lubrication.
Re-install the cover housing and housing screws after maintenance is com­plete.

ALUMINUM AIR FILTER

Every Curtron Air Door comes with a built-in re-usable Aluminum Air Filter
which should be cleaned twice a year. Simply remove the intake grill mount­ing screws and detach the grill from the cover housing. The filter can then
be easily lifted out of the frame. Clean with soap and water and allow to dry
before placing the filter back into the frame. Replace the intake grill and
mounting screws. See Figure 12.

NOTES:

MAINTENANCE AND CLEANING

Model No.

Serial No.

Date of Purchase

INTAKE GRILL

MOUNTING

SCREWS

INTAKE GRILL

MOUNTING SCREWS

INTAKE GRILL

RE-USABLE

ALUMINUM AIR FILTER

COVER

HOUSING

Figure 12