2
Models NYD & NYB • Tamper-Resistant Centrifugal Roof Exhaust Fans
®
Table 1: Dimensional Data
Model
A
B
C
Damper
Square
Roof
Opening
Approximate
Weight
NYD-75
19
(483)
30
3
⁄
4
(781)
20
1
⁄
2
(521)
10
(254)
12
1
⁄
2
(318)
62
(28)
NYD-90
19
(483)
30
3
⁄
4
(781)
20
1
⁄
2
(521)
10
(254)
12
1
⁄
2
(318)
75
(34)
NYD/NYB-100
22
(559)
35
1
⁄
2
(902)
25
(635)
12
(305)
14
1
⁄
2
(368)
95
(43)
NYD-120
24
(610)
37
(940)
23
1
⁄
8
(587)
14
(356)
16
1
⁄
2
(419)
95
(43)
NYD-130
24
(610)
37
(940)
23
1
⁄
8
(587)
14
(356)
16
1
⁄
2
(419)
105
(48)
NYD/NYB-140
26
(660)
41
1
⁄
2
(1054)
26
7
⁄
8
(683)
16
(406)
18
1
⁄
2
(470)
135
(61)
NYB-180
30
(762)
45
(1143)
32
5
⁄
8
(829)
18
(457)
20
1
⁄
2
(521)
225
(102)
NYB-240
34
(864)
52
1
⁄
2
(1334)
38
5
⁄
8
(981)
24
(610)
26
1
⁄
2
(673)
314
(142)
All dimensions in inches (millimeters). Weight in pounds (kilograms).
B
C
A
2 1/2 in.
(64 mm)
Receiving
Upon receiving the product, check to make sure
all items are accounted for by referencing the bill
of lading to ensure all items were received. Inspect
each crate for shipping damage before accepting
delivery. Notify the carrier if any damage is noticed.
The carrier will make notification on the delivery
receipt acknowledging any damage to the product.
All damage should be noted on all the copies of
the bill of lading which is countersigned by the
delivering carrier. A Carrier Inspection Report should
be filled out by the carrier upon arrival and reported
to the Traffic Department. If damaged upon arrival,
file a claim with carrier. Any physical damage to the
unit after acceptance is not the responsibility of
Greenheck Fan Corporation.
Unpacking
Verify that all required parts and the correct
quantity of each item have been received. If any
items are missing, report shortages to your local
representative to arrange for obtaining missing
parts. Sometimes it is not possible that all items
for the unit be shipped together due to availability
of transportation and truck space. Confirmation of
shipment(s) must be limited to only items on the bill
of lading.
Handling
Move fan to desired location and fasten securely
through mounting holes in base. Shims may
be necessary depending upon roofing material
thickness. The following diagram depicts
dimensions for models NYD and NYB.
A heavy-gauge stainless steel hasp allows the
unit to be padlocked for security. The hasp design
conceals the padlock beneath the housing skirt,
which keeps it out of sight and the weather.
The motor’s amperage and voltage ratings must
be checked for compatibility to supply voltage
prior to final electrical connection. Electrical lead-in
wires should be run through the conduit provided
between the curb and the bottom of the motor
compartment. Wiring must conform to local and
national codes.
Storage
Fans are protected against damage during
shipment. If the unit cannot be installed and
operated immediately, precautions need to be
taken to prevent deterioration of the unit during
storage. The user assumes responsibility of the fan
and accessories while in storage. Greenheck Fan
Corporation will not be responsible for damage
during storage. These suggestions are provided
solely as a convenience to the user.
Indoor
The ideal environment for the storage of fans and
accessories is indoors, above grade, in a low
humidity atmosphere which is sealed to prevent the
entry of blowing dust, rain or snow. Temperatures
should be evenly maintained between 30° to 110°F
(-1° to 43°C) (wide temperature swings may cause
condensation and “sweating” of metal parts). All
accessories must be stored indoors in a clean, dry
atmosphere.
Remove any accumulations of dirt, water, ice, or
snow and wipe dry before moving to indoor storage.
To avoid “sweating” of metal parts, allow cold
parts to reach room temperature. To dry parts and
packages use a portable electric heater to get rid
of any moisture buildup. Leave coverings loose
to permit air circulation and to allow for periodic
inspection.
CAUTION
Do not lift by the fan hood. Avoid lifting fans in a
way that will bend or distort fan parts. Never pass
slings or timbers through the venturi of fan. Fans
with special coatings or paints must be protected
in handling to prevent damage.
Figure 1
