Twin City IM-610 User Manual
BACKWARD INCLINED HINGED
RESTAURANT EXHAUST FAN
INSTALLATION, OPERATION & MAINTENANCE MANUAL
IM-610
August 2014
Twin City Fan & Blower Catalog 610 provides additional information on this equipment, fan performance,
optional accessories and construction features. This
catalog can be found at www.tcf.com or by contacting
your local Twin City Fan & Blower sales representative.
HEAVY DUTY RESTAURANT EXHAUST
Belt Drive Model: BHRE
Type: Centrifugal Roof Exhaust
CFM to 9,043 (15,365 m³/hr)
Static Pressure to 5.00 in. w.g. (1,245 Pa)
Maximum Continuous Operating Temperature:
400°F (204.4°C)
Available in nine sizes: 105 - 245, nominal wheel
diameter 10.5 to 24.5 inches (267-622 mm)
General Installation
CAUTION: Sheet metal parts, screws, clips and similar
items inherently have sharp edges, and it is necessary
that the installer and service personnel exercise caution.
The installation of this equipment shall be in accordance
with the regulations of authorities having jurisdiction and
all applicable codes.
This equipment is to be installed by an experienced
installation company and fully trained personnel. The
mechanical installation of the exhaust ventilator consists
of making final connections between the unit and building services.
CAUTION: Disconnect power and lock out power source
before installing or servicing. Failure to disconnect power
can result in electric shock, fire or serious injury.
1. Do not operate the fan beyond the maximum cataloged RPM. The current should be verified any time
the RPM is adjusted to ensure it is below the
nameplate amperage value.
2. Verify the equipment is compatible with the power source.
3. Allow motor to cool down before servicing to avoid
injury.
Receiving
When the equipment is received, all items should be
carefully checked against the bill of lading to ensure all
items have been received. Inspect each package for
shipping damage before accepting delivery.
If any damage occurred, notify the carrier, who will make
proper notation on the delivery receipt acknowledging
the damage. Damages should be noted on all copies of
the bill of lading and have all copies countersigned by
the delivering carrier. A Carrier Inspection Report should
be filled out and forwarded to the Traffic Department.
If units are damaged in transit, it is the responsibility of
the receiver to make all claims against the carrier. Twin
City Fan is not responsible for damages incurred during
shipment or after acceptance.
Short Term Storage
If fan installation is to be delayed, store the unit in a
protected area, preferably indoors. Protect fan bearings
and motor from moisture and vibration.
Long Term Storage
Prior to storage, grease fan bearings and motor bearings
per manufacturer's specifications. Note, motors which
contain ball bearings are permanently lubricated as built.
No additional lubrication is required. On belt drive units,
belts should be removed or at least the belt tension
reduced to prevent a sag/set from forming in the fan
shaft and belts. Rotate wheel and shaft monthly and
leave in a different position. When unit is to be removed
from storage and activated, check for corrosion and
damage. All bearing grease should be purged and
replaced with fresh grease.
Unpacking
Verify that all required parts and proper quantities have
been received for each item. Report shortages or missing items to your local representative to arrange for
replacement parts.
Sometimes it is not possible for all items to ship together due to availability of carriers and truck space.
Verification of shipments must be limited to only items
on the bill of lading.
©2012 Twin City Fan Companies, Ltd.
Fan
Lifting Lug
Figure 1.
Table 1. Fan Mounting to Roof Curb
Lifting Lug
Handling
Lift fan using all lift points. Use spreader bars to ensure
straps do not come in contact with unit. See Figure 1.
BHRE Size
Fasteners per
Side
105 2 8
122 - 245 3 12
Figure 2.
Total
Fasteners
Installation
Refer to Table 2 for appropriate size roof opening.
Follow curb manufacturer's recommended installation.
1. For lifting locations, see Fig. 1.
2. Position the fan with its wiring conduit in line with
the wiring or external disconnect, towards the power
supply. The location and placement of any supply
fans should be considered.
3. Center fan on roof curb, allow 3/4" (19 mm) space
all around.
4. Attach hinge bracket to fan with 1/2" cap screw and
nut. Adjust curb stop (bolted to fan) so hinge is
flush with roof curb.
5. Rotate hinge bracket such that mounting holes are
vertical and fasten curb hinge with hardware pack
(p/n HWPACK-1) according to Fig. 3.
6. Screw fan to the roof curb using #12-14 dril-flex or
equal 3" (76 mm) from each corner and one fastener centered. Add additional fasteners equally
spaced to satisfy. See Figure 2 and Table 1.
7. Verify the power is de-energized. Run wires to the
disconnect switch. Leave some slack in the wire in
the motor compartment so the motor and wheel
assembly can be lifted for inspection and cleaning.
8. Verify power source is compatible with the fan.
Make connection to the disconnect switch.
9. Check tightness of all fasteners.
10. Verify wheel is centered and spins freely.
11. Restaurant fan installation must be in compliance
with local codes and National Fire Protection
Association's standard NFPA 96.
#12-14 Dril-Flex self drilling
Figure 3.
Nut, 1/2-13
Curb Stop
All hardware found in package HWPACK-1
screw or equal
1/4-11 x .75 Dril-ex screw or equal
6 Locations
Hinge Bracket
(Both Sides)
2
Twin City IM-610
Table 2. Roof Curb Mounting to Building Structure
Concrete Anchoring Instructions for Roof Curbs
BHRE Size Curb Cab Roof Curb
105
122
135
150
165
182
200
222
245
20 x 20
(508 x 508)
23 x 23
(584 x 584)
25 x 25
(635 x 635)
27 1/2 x 27 1/2
(698 x 698)
29 x 29
(737 x 737)
31 1/2 x 31 1/2
(800 x 800)
34 x 34
(864 x 864)
38 x 38
(965 x 965)
41 1/2 x 41 1/2
(1054 x 1054)
18 1/2 x 18 1/2
(470 x 470)
21 1/2 x 21 1/2
(546 x 546)
23 1/2 x 23 1/2
(597 x 597)
26 x 26
(660 x 660)
27 1/2 x 27 1/2
(698 x 698)
30 x 30
(762 x 762)
32 1/2 x 32 1/2
(825 x 825)
36 1/2 x 36 1/2
(927 x 927)
40 x 40
(1016 x 1016)
Figure 4.
Outside of Roof Curb
Curb Height
8" - 18"
(203 - 457 mm)
1 1/2" (38 mm)
less than Fan Curb
[3/4" (19 mm) per side]
Minimum Fasteners
Steel Anchoring Concrete Anchoring Timber Anchoring
3 3 3
3 3 3
3 3 3
3 3 3
3 3 3
3 3 4
3 3 4
3 4 5
4 4 5
1/4" Dia. S.S. Hilti Kwik bolt expansion
anchors or equal.
4-1/2" (114 mm) min. spacing.
Located at each corner as shown.
Each side at center of unit.
Add additional fasteners to satisfy.
1.00
2" (51 mm) Min. Embedment
Outside
Flange
22 1/2 x 22 1/2
(571 x 571)
25 1/2 x 25 1/2
(648 x 648)
27 1/2 x 27 1/2
(698 x 698)
30 x 30 (762 x
762)
31 1/2 x 31 1/2
(800 x 800)
34 x 34 (864 x
864)
36 1/2 x 36 1/2
(927 x 927)
40 1/2 x 40 1/2
(1029 x 1029)
44 x 44 (1118 x
1118)
Corner Detail Of
All Structures - Typ
Roof
Opening
13 1/2 x 13 1/2
(343 x 343)
16 1/2 x 16 1/2
(419 x 419)
18 1/2 x 18 1/2
(470 x 470)
21 x 21
(533 x 533)
22 1/2 x 22 1/2
(571 x 571)
25 x 25
(635 x 635)
27 1/2 x 27 1/2
(698 x 698)
31 1/2 x 31 1/2
(800 x 800)
35 x 35
(889 x 889)
2.00
Curb Height
8" - 18"
(203 - 457 mm)
Curb Height
8" - 18"
(203 - 457 mm)
Roof Opening
Outside Flange
2000 PSI Min. Concrete Strength
Wood Anchoring Instructions for Roof Curbs
Outside of Roof Curb
1 1/2" (38 mm)
less than Fan Curb
[3/4" (19 mm) per side]
#10 Zinc plated wood screw or equal.
Located at each corner as shown.
Each side at center of unit.
3/4" (19 mm) min. spacing, 14-1/2" (368 mm) max. spacing.
Add additional fasteners to satisfy.
1-1/2" (38 mm) Min. Embedment
Roof Opening
Wood Buck
Min. S.G. = .55
Center fasteners
Outside Flange
Steel Anchoring Instructions for Roof Curbs
Outside of Roof Curb
1 1/2" (38 mm)
less than Fan Curb
[3/4" (19 mm) per side]
#12-14 Dril-ex self drilling screw or equal.
Located at each corner as shown.
Each side at center of unit.
3/4" (19 mm) min. spacing, 14-1/2" (368 mm) max. spacing.
Add additional fasteners to satisfy.
Min. 12 ga. or 1/8" (3 mm) thick steel member
Twin City IM-610
Roof Opening
Outside Flange
Fig. 3
3
Grease Box Installation
1. Position Grease Box under the 2" NPT pipe with
approximately 1/2 - 3/4 in. (13-19 mm) overlap using
the inside or outside hole patterns.
2. Mark mounting hole locations on curb cap.
3. Drill two 5/16 in. (8 mm) diameter holes in marked
location.
4. Install 1/4 in. (6 mm) hardware to detail shown.
Figure 5.
20.48
(520 mm)
16.00
(406 mm)
9.00
(229 mm)
A
A
Grease Pad
(Inside box)
.50 - .75
(13 - 19 mm)
Cap Screw
1/4-20 x 3/4
Flat Washer, 1/4
Drain Pipe
B
SECTION A-A
.13
(3 mm)
Hex Nut, 1/4-20
DETAIL B
4
Twin City IM-610
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