20
7038-206E
August 3, 2015
5700 STEP TOP
D. Adjusting The Blower Speed Control
The blower speed control for this unit is adjusted at the factory,
and normally does not require further adjustment.
1. With the appliance plugged in, turn the speed control
knob to slow (full clockwise).
2. With a small screwdriver, adjust the blower speed by
turning the adjustment mechanism through the hole on
the side of the speed control.
3. Adjust the speed so the blower runs slowly, but does
not stop. Turn clockwise to slow the blower and
counterclockwise to increase the speed.
NOTE:
When the speed control is turned clockwise, it will
click on to high speed. Continue to turn the speed control
clockwise to decrease the speed. At full clockwise, the blower
should blow gently, but should not stop.
C. Door Handle Assembly
1. Install washer on door handle shaft.
2. Slide door handle through door.
3. Install second washer(s) as shown.
4. Install key in groove.
5. Align groove in latch cam with key; slide latch cam over
shaft
6. Install locknut but do not overtighten as the door
handle needs to move smoothly.
7. Install spring handle turning in a counter-clockwise
motion to desired location on door handle rod.
Figure 20.1
Locknut
Door Cross Section
(example)
Latch Cam
Spacing
Washers
Square Key
Door Handle
Spring
Handle
2 inch (51mm) clearance
required from bend in door
handle rod to end of spring
handle.
CAUTION
• Do NOT overtighten lock nut.
• Door handle needs to move smoothly.
E. Calculating Alternate Floor Protection
Material
Thermal Conductivity: k value
The k value indicates the amount of heat (in BTU’s) that will fl ow
in 1 hour through 1 square foot of a uniform material 1 inch thick
for each degree (F) of temperature difference from one side of
the material to the other. The LOWER the k factor means less
heat is being conducted through the non-combustible material to
the combustible material beneath it. The k value of a material
must be equal or smaller then the required k value to be accept-
able.
(BTU)
(inch)
(foot
2
(hour) (
o
F)
Thermal Resistance: R value
The R value is a measure of a material’s resistance to heat trans-
fer. R value is convenient when more than one material is used
since you can add the R values together, whereas you can not
do this for k value. The HIGHER the R factor means less heat
is being conducted through the non-combustible material to the
combustible material beneath it. The R value of a material must
be equal or larger then the required R value to be acceptable.
Converting k to R:
Divide 1 by k and multiply the results times the thickness in inch-
es of the material.
R = 1/k x inches of thickness
Converting R to k:
Divide the inches of thickness by R.
k = inches of thickness/R
Calculations:
Example: Floor protection requires k value of 0.84 and 3/4 inch
thick.
Alternative material has a k value of 0.6 and is 3/4 inch thick.
Divide 0.6 by .75 = k value of 0.80. This k value is smaller than
0.84 and therefore is acceptable.
F. Hearth Protection Requirements
FLOOR PROTECTION:
•
Must be non-combustible material.
•
Extend beneath heater and to the front, sides and rear as
indicated.
• The floor must be non-combustible or otherwise
adequately protected from radiant heat given off by the
unit and from sparks and falling embers.
•
A layer of thin brick or ceramic tile over a combustible fl oor
is NOT suffi cient.
In US installations,
it is necessary to install a fl oor protector
of a minimum of 1 inch (k value = 0.49, R value = 2.04) of
non-combustible material a minimum of 16 inches (406mm)
in front of glass and 8 inches (203mm) to both sides of the
