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INSTALLATION

WARNING: To reduce the risk of fire, do not store or 

use gasoline or other flammable vapors and liquids 

in the vicinity of the heater.
CAUTION: High temperature, risk of fire, keep 

electrical cords, drapery, furnishings, and other 

combustibles at least 3 feet (0.9 m) from the front of 

the heater and away from the side and rear.

1.  Remove the retaining screw, unplug wiring harness

and lift heater assembly from housing. (FIG. 2)

2.  Slide the wiring cover out of housing. (FIG. 3)

(16”-ON-CENTER STUDS ONLY)

1. Choose which side of housing will be mounted

directly to a wall stud. Then, insert a mounting

bracket, from the opposite side, into the channel

at the top of housing. (FIG. 4)

NOTE

: Locate housing at least 6” from the floor and

any adjacent walls.

2.  Use measuring guide on side of housing to posi-

tion housing so that it will be flush with finished

wall. Drive two (2) nails through the holes in side

of housing and into stud. (FIG. 5)

3. Extend mounting bracket, level housing, and nail

to other stud. (FIG. 6)

(24”-ON-CENTER STUDS ONLY)

1.  Choose which side of housing will be mounted di-

rectly to a wall stud. From this side, push a mounting

bracket as far as possible into the channel at the

top of housing. (FIG. 4)

NOTE

: Locate housing at least 6” from the floor and

any adjacent walls. 

2.  Use measuring guide on side of housing to posi-

tion housing so that it will be flush with finished

wall. Drive two (2) nails through the holes in side

of housing and into stud. (FIG. 5)

3.  Secure the two (2) mounting brackets together (with 

screw supplied). Level housing and nail to opposite 

stud, as shown. (FIG. 7)

WIRING

Installation work and electrical wiring must be 

done by a qualified person(s) in accordance with 

all applicable codes and standards, including fire-

rated construction codes and standards.
(ALL INSTALLATIONS)

1.  Feed electrical power cable through open knockout 

in corner of housing and attach with appropriate

connector. Allow 6” of wire inside of housing.

NOTE

: Use other housing knockout when wiring

units in parallel.

2. Connect black to black, white to white, green to

green or bare wire. Replace wiring cover. (FIG. 8)

FIG. 2

FIG. 3

FIG. 4

FIG. 5

MEASURING 

GUIDE

FIG. 6

FIG. 7

MEASURING 

GUIDES 

NAIL 

HERE

 

Summary of Contents for NuTone 174178170

Page 1: ...essary when any heater is used by or near children or invalids and whenever the heater is left operating and unattended 7 Do not operate any heater after it malfunctions Disconnect power at service panel and have heater inspected by a reputable electrician before reusing Do not use outdoors 9 To disconnect heater turn controls to off and turn off power to heater circuit at main disconnect panel or...

Page 2: ...ratings for each model MODELS VOLTS AMPS WATTS BTU HR 170 120 8 33 4 16 1000 500 3413 1707 240 4 16 1000 3413 208 3 61 750 2560 174 120 12 5 6 25 1500 750 5120 2560 240 6 25 1500 5120 208 5 41 1125 3840 178 240 8 33 4 16 2000 1000 6827 3413 208 7 21 3 61 1500 750 5120 2560 BOLD ratings are factory wired See OPTIONAL WIRING CONVERSIONS section on page 3 for wattage and voltage conversion instructio...

Page 3: ...r stud FIG 6 24 ON CENTER STUDS ONLY 1 Choose which side of housing will be mounted di rectly to a wall stud From this side push a mounting bracket as far as possible into the channel at the top of housing FIG 4 NOTE Locate housing at least 6 from the floor and any adjacent walls 2 Use measuring guide on side of housing to posi tion housing so that it will be flush with finished wall Drive two 2 n...

Page 4: ...ng NOTE Mask can be put in place before or after heater assembly is re installed 2 Remove mask before operation ALL INSTALLATIONS 3 Secure heater assembly with retaining screw and plug wiring harness into receptacle 4 Fasten grille to heater with two 2 screws provided FIG 13 5 Push knob onto thermostat stem 6 Turn on power at service entrance Turn thermostat to its highest setting and make sure he...

Page 5: ...170 99270725 Heating Element Model 174 99270742 Heating Element Model 178 15 93270619 Wire Clamp 16 97008682 Partition Plate Assembly 17 99260428 Nut 6 32 x 5 16 Keps 2 Required 18 97008675 Plug Assembly 19 97008677 Thermostat Wire Assembly 20 97008678 Overload Wire Assembly 21 99030191 Thermostat 22 98006973 Thermostat Bracket 23 99260464 Lock Nut 24 99150533 Screw 8 18 x 5 8 Ph Pan Head 25 98006...

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