Catalog
53
BLOWERS / INSTALLATION GUIDELINES
Installation and Blower Selection Guidelines
1. Distance from cooking
surface:
For optimal
performance, the
distance from the
cooking surface to
the bottom of the
range hood should
be between 24" to
3 0", unl e s s
otherwise noted.
DO NOT install a
Broan Elite range hood less than 24"
above cooking surface.
To maintain hood performance at
heights greater than the recommended
range, use the following guidelines:
• For every 3" increase in installation
height, add 100 CFM to the minimum
exhaust requirement and/or a
minimum of 3" to the hood/liner
width (may require going to the next
hood width).
2. Range hood width:
The hood should never be less than
the width of the cooktop.
3. Required blower CFM based
on cooktop BTU output.
For gas cooktops under 60,000 BTUs, or
electric choose a blower with a minimum
of 100 CFM per lineal foot of your
cooktop width. For example, a 36" wide
cooktop requires a blower with a
minimum of 300 CFM.
• High heat cooking or aromatic foods
may require additional CFM. Always
check with the range manufacturer.
NOTE: Increasing capture area by 3"
on each side is also a recommended
way to address this issue.
• As a means to estimate the
approximate CFM requirement for
cooktops OVER 60,000 BTUs, choose
a blower with 1 CFM per 100 BTU of
cooktop output. To quickly calculate
this number, add the BTU output from
all burners and drop the last two zeros.
For example, if the total BTU output of
the cooktop burners is 65,000 BTUs,
choose a blower with at least
650 CFM.
4. Additional CFM needs for
a Grill or Griddle:
If your cooktop has a grill or griddle,
ADD 200 CFM to your estimated CFM
needs as calculated in step 3. For
example, if your cooktop BTU output
requires a 650 CFM blower, add 200
CFM for a total of 850 CFM.
Installation Example:
A consumer purchases a cooktop with these
specifications:
• Four burner, 36" cooktop
• Burner output is 60,000 BTU
• The cooktop features a grill
• Installation requirements call for the range hood to be 33"
over the range (3" above recommended maximum height)
Blower CFM Option 1:
(Using the guidelines above) The blower must equal
a minimum of 600 CFM (60,000 BTU) + 200 CFM
(for Grill requirement) + 100 CFM (for 3" of installation height)
= 900 CFM
Blower CFM Option 2:
(Using the guidelines above) Select a range hood that is a
minimum of 3" WIDER than the cooktop, a minimum 600 CFM
(60,000 BTU) + 200 CFM (for Grill requirement) = 800 CFM
Model Mounting CFM Max Cooktop BTU HVI Volts Amps
Rough-In
Duct
Inlet/Outlet
†
Direction Motor Type
P5 Internal 460V/500H 60,000 Y 120 1.8 3-1/4"x10" — V or H —
P8 Internal 850V/900H 95,000 Y 120 3.4 3-1/4"x14" — V or H —
331H
††
Exterior 600 60,000 Y 120 2.3 10" round — — Single-Speed
332H
††
Exterior 900 90,000 Y 120 5.8 10" round — — Single-Speed
335
††
Exterior 1200 120,000 Y 120 3.0 10" round — — Single-Speed
336
††
Exterior 1500 120,000 Y 120 3.8 10" round — — Single-Speed
HLB3
††^
In-Line 280/260* 40,000 Y 120 2.6 — 8" or 10" round V or H Single-Speed
HLB6
††
In-Line 600/600* 65,000 Y 120 2.9 — 10"/10" round V or H Single-Speed
HLB9
††
In-Line 800/700* 85,000 Y 120 3.0 — 10"/10" round V or H Single-Speed
HLB11
††
In-Line 1100/1000* 110,000 Y 120 5.0 — 10"/10" round V or H Single-Speed
†† Model 332KR Rough-In Kit required for installation with hood series RM60000, 64000 and RMIP (Model 421 10" In-Line damper recommended for Exterior blowers).
* Straight CFM/Right angled CFM (rated with transitions provided).
† Transitions provided with unit.
^ Not recommended for use with grill applications.
Internal, In-Line and Exterior blower specifications table