MODELS 170F, 174F & 178F
FAN FORCED WALL HEATERS
FINISH ASSEMBLIES
FOR USE WITH BROAN MODEL 171H ROUGH-IN HOUSING
READ AND SAVE THESE INSTRUCTIONS
!
CAUTION
1. This product may ONLY be installed horizontally in a wall.
WARNING
1. ALL ELECTRICAL WORK MUST BE DONE IN ACCOR-
DANCE WITH LOCAL OR NATIONAL ELECTRICAL CODE
AS APPLICABLE. FOR SAFETY, THIS PRODUCT MUST
BE GROUNDED. IF YOUARE UNFAMILIAR WITH METH-
ODS OF INSTALLING ELECTRICAL WIRING, SECURE
THE SERVICES OF A QUALIFIED ELECTRICIAN.
DO NOT MOUNT IN ANY OTHER POSITION.
2. Install heater at least 6” from floor or any adjacent vertical
surface.
3. DO NOT locate heater behind a door, furniture, drapes,
etc., where the air flow to the unit would be restricted.
2. WHEN WIRING, SERVICING OR CLEANING THIS UNIT,
TURN OFF POWER AND LOCK OUT SERVICE PANEL.
FAILURE TO DO SO COULD ALLOW OTHERS OR THER-
MOSTAT TO TURN ON POWER UNEXPECTEDLY WHICH
MAY CAUSE FATAL ELECTRICAL SHOCK.
4. Provide heater with an appropriately-rated electrical cir-
cuit to prevent tripped breakers or blown fuses. (See chart
below).
5. DO NOT CONNECT HEATER TO DIMMER SWITCH OR
SPEED CONTROL.
6. To avoid motor bearing damage and noisy and/or unbal-
anced impellers, keep drywall spray, construction dust,
etc., off power unit.
7. Please read specification label on product for further infor-
mation and requirements.
3. To avoid electrical shock:
• DO NOT install unit in a tub or shower enclosure or any
location where it may come in contact with water.
• NEVER place a switch where it can be reached from a
tub or shower.
4. DO NOT install this unit in an area where chemicals or
other flammables are stored or used. Explosion and fire
may result.
PLAN THE INSTALLATION
This wall heater finish assembly is intended for installation
into a Broan Model 171H rough-in housing — after the wall
has been completed.
Follow these basic steps when installing this heater:
• Remove the housing mask.
• Fasten finish assembly inside housing.
• Plug assembly in.
The heater can be operated using the Broan Model 86 Line-
Voltage Thermostat from a wall location or the Broan Model
83 Integral Thermostat installed into heater. Purchase the con-
trol separately.
• Attach grille.
The table below lists the ratings for each model.
DRYWALL
WALL
MODELS VOLTS AMPS
WATTS
BTU/HR
STUD
120
240
208
8.33/4.16
4.16
3.61
1000/500
1000
3413/1707
3413
170F
GRILLE
750
2560
120
240
208
240
208
12.5/6.25
6.25
1500/750
1500
5120/2560
5120
HEATER
HOUSING
174F
178F
5.41
1125
3640
8.33/4.16 2000/1000
7.21/3.61 1500/750
6827/3413
5120/2560
BOLD ratings are factory wired. See "OPTIONAL WIRING
CONVERSIONS" section on pages 2 and 3 for wattage and
voltage conversion instructions.
POWER
CABLE
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COMPLETE THE INSTALLATION
USE AND CARE
WARNING
DISCONNECT ELECTRIC POWER AT SERVICE
ENTRANCE BEFORE CLEANING OR SERVICING UNIT.
THERMAL OVERLOAD PROTECTOR
If heater fails to operate when thermostat is turned to its high-
est setting: Turn power off at service entrance. Remove grille
and press button marked "RESET".
CLEANING
Clean the heater using the round brush tool on your vacuum
cleaner. Remove large accumulations of dust, lint, etc., that
might impede the flow of air through the heater. Such block-
age will lower its efficiency and create a possible over-heat-
ing condition.
To clean grille, use a soft cloth which has been moistened with
household window cleaner.
CAUTION: METAL AND ELECTRICAL PARTS SHOULD
NEVER BE IMMERSED IN WATER.
1. Attach grille.
Fasten grille to heater with two (2) screws from parts bag.
2. Check operation.
Turn on power at service entrance. Turn thermostat to its
highest setting and make sure heating element and blower
come on. Then turn it to its lowest setting and make sure
element and blower shut off.
Broan-NuTone LLC One Year Limited Warranty
Broan-NuTone LLC warrants to the original consumer purchaser of its products that such products will be free from defects in materials
or workmanship for a period of one year from the date of original purchase. THERE ARE NO OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE.
During this one-year period, Broan-NuTone LLC will, at its option, repair or replace, without charge, any product or part which is found
to be defective under normal use and service.
THIS WARRANTY DOES NOT EXTEND TO FLUORESCENT LAMP STARTERS AND TUBES. This warranty does not cover (a) normal
maintenance and service or (b) any products or parts which have been subject to misuse, negligence, accident, improper maintenance
or repair (other than by Broan-NuTone LLC), faulty installation or installation contrary to recommended installation instructions.
The duration of any implied warranty is limited to the one-year period as specified for the express warranty. Some states do not allow
limitation on how long an implied warranty lasts, so the above limitation may not apply to you.
BROAN-NUTONELLC’SOBLIGATIONTOREPAIRORREPLACE,ATBROAN-NUTONELLC’SOPTION,SHALLBETHEPURCHASER’S
SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY. BROAN-NUTONE LLC SHALL NOT BE LIABLE FOR INCIDENTAL,
CONSEQUENTIAL OR SPECIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH PRODUCT USE OR PERFORMANCE.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may
not apply to you.
This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. This warranty supersedes
all prior warranties.
To qualify for warranty service, you must (a) notify Broan-NuTone LLC at the address or telephone number below, (b) give the model
number and part identification and (c) describe the nature of any defect in the product or part. At the time of requesting warranty service,
you must present evidence of the original purchase date.
Broan-NuTone LLC, 926 West State Street, Hartford, WI 53027 (1-800-637-1453)
3
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SERVICE PARTS
KEY
NO.
PART
NUMBER DESCRIPTION
1
2
3
4
5
6
7
8
97008681 Housing
98003036 Mounting Bracket (2 Required)
99260512 #8-18 Sheet Metal Nut (2 Required)
99390015 Grounding Clip
97005422 Receptacle Assembly
98006975 Wiring Cover
KEY
NO.
PART
NUMBER DESCRIPTION
99020130 Blower Wheel
17
18
19
20
21
22
23
24
25
26
27
28
99260428 Nut, #6-32 x 5/16 Keps (2 Required)
97008675 Plug Assembly
97008677 Thermostat Wire Assembly
97008678 Overload Wire Assembly
99270743 Terminal Jumper
99150533 Screw, #8-18 x 5/8 Ph. Pan Head
98006970 Grille
99150528 Grille Screw (2 Required)
99090681 Grille Logo
99080248 Motor (Models 170F and 174F)
99080252 Motor (Model 178F)
99270735 Tab Adapter
99030194 Thermal Overload
99271091 Guard
98006974 Element Bracket
99150491 Screw, #8-18 x 3/8 Ph. Pan Head
(5 Required)
99270741 Heating Element (Model 170F)
99270725 Heating Element (Model 174F)
99270742 Heating Element (Model 178F)
93270619 Wire Clamp
9
10
11
12
13
14
99090688 Cover Label
93270493 Wire Tie
99150470 Screw, #8-18 x 3/8 Ph. Truss Hd.
15
16
97008682 Partition Plate Assembly
Always order replacement parts by part number - NOT key number.
Broan-NuTone LLC, 926 West State Street, Hartford, WI 53027
99041235H
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