Hoffmann 906 series Manual
Thermostat Hardware
• Thermostat cover
• Thermostat base
• Electrical box cover (for a 2” X 4” electrical box).
Mounting Hardware
•
Two #6 x 1/2” painted screws (secures electrical box
cover to electrical box).
• Two #6 x 1” phillips screws (secures Thermostat base to
electrical box cover).
• Three Wire nuts (secures stat wiring to field wiring).
• Two Wall anchors (for direct to wall mounting).
Electrical Mounting
All 906 Series Thermostats – Figure 1
(Miniature & standard sizes)
1.
Remove Thermostat cover from Thermostat base. (See
Figure 3.)
2.
Insert wires from Thermostat base through the 1/2”
hole in the electrical box cover.
3.
Wire Thermostat to field Thermostat cable using wire
nuts. (Color-coded to assure proper connection.)
4.
Mount electrical box cover to the electrical box with
two #6 x 1/2” painted head screws. (See Figure 1.)
NOTE
Be sure the Thermostat base is centered on electrical
box cover. If incorrectly installed, the Thermostat base
will not symmetrically align with the electrical box
cover.
5.
Attach Thermostat base to electrical box cover with the
two premounted #6 x 1” phillips screws. Do Not Remove
nylon shims. The Thermostat base can be mounted with
less than 1/16” clearance to the electrical box cover.
NOTE
Clearance is required to allow the Thermostat cover to
snap onto the base.
CAUTION
Thermostat base should be firmly secured to the elec-
trical box cover. Do not over tighten!
6.
Place Thermostat cover onto Thermostat base, securing
the left side first, then push right side until it “snaps”
securely into place.
Description
Direct To Wall Mounting – Figure 2
Miniature size, horizontal Thermostats
906-13 Series: 13AW, 13ADRW, 19CDRW, 19DDRW, 23W,
and 23ADRW only
1.
Remove Thermostat cover from Thermostat base. (See
Figure 3.)
2.
Wire Thermostat base to field Thermostat cable using
wire nuts. (Color coded to assure proper connection.)
3.
Place the Thermostat base on the wall at the proposed
mounting location. Use the two premounted #6 x 1”
phillips screws (in the Thermostat base) as a template to
mark the location for the wall anchoring hole location.
4.
Drill holes at markings for plastic wall anchors. Do Not
Remove nylon shims (holding the pre-mounted screws
in the Thermostat base).
5.
Install wall anchors. Attach Thermostat base directly
to the wall with the two premounted #6 x 1” phillips
screws. Thermostat base will mount with less than 1/16”
clearance to wall.
6.
Place Thermostat cover onto Thermostat base, secur-
ing left side first, then push right side until it “snaps”
securely into place.
Thermostat Release Cover
(Miniature size, horizontal Thermostats) Figure 3.
906-13 Series: 13AW, 13ADRW, 19CDRW, 19DDRW, 23W,
and 23 ADRW only
NOTE
The Thermostat assembly should be held against a
solid surface, if it is not mounted on the wall.
1.
When facing the Thermostat cover, place a small screw-
driver between the 4th and 5th ribbed openings on the
right side of the Thermostat cover.
Hoffman
|
Controls
Installation & Operating
|
Installation & Operating
|
Instructions
906 Series
Electronic Thermostats
Hoffman
|
Controls
2463 Merrell Road, Dallas, Texas 75229 • Phone: (972) 243-7425 • Fax: (972) 247-8674 • Toll Free: 1-888-HCC-1190
|
2463 Merrell Road, Dallas, Texas 75229 • Phone: (972) 243-7425 • Fax: (972) 247-8674 • Toll Free: 1-888-HCC-1190
|
www.hoffmancontrols.com Form: 173-0173-000 Rev. A
2.
Push firmly to the left and to the back side of cover
until latch releases the base from the cover.
3.
To attach the cover, place the cover onto the
Thermostat base, securing left side first, then push right
side until it “snaps” securely into place.
Duct Sensor Installation
Mounting Procedure
• Drill 5/16” size hole in the duct.
• Remove grommet from sensor.
• Install grommet into the 5/16” hole.
• Slide the sensor into the grommet.
Mounting Instructions
Figures 1, 2, and 3 (below) depicts the miniature size,
horizontal Thermostat; 906-13AW, 13ADRW, 19CDRW,
19DDRW, 23ADRW, 23W. The standard size, vertical
Thermostats (906-13W and 906-13DRW not shown) are
specially designed for electrical box mounting only.
Figure
1
–
Thermostat
– Thermostat –
component
assembly
when
mounting
a
Thermostat
to
an
electrical
box
that
is
installed
in
the
wall.
Note:
Do not remove nylon shins (not shown) from
the phillips screws.
Figure 2
– Thermostat component assembly when mount-
Figure 2 – Thermostat component assembly when mount-Figure 2
ing a Thermostat directly to a wall surface.
Note:
Do not remove nylon shins (not shown) from
the phillips screws.
Figure 3
– the proper positioning of a small screwdriver
Figure 3 – the proper positioning of a small screwdriver Figure 3
to release the latch the secures the Thermostat cover to the
Thermostat base.
Note:
The 906 Series
Thermostat design
allows only those
persons with specific
instructions entry
to the internal
components.
Remote Duct Sensor
Thermostat Model No. Output Signal Material
906-13ADRW 490-0029-007 10K Thermoplastic
906-13DRW 490-0029-007 10K Thermoplastic
906-19CDRW 490-0037-007 mV Stainless Steel
906-19DDRW 490-0037-007 mV Stainless Steel
906-23ADRW 490-0029-007 mV Thermoplastic
Remote Duct Sensor
906 Series Thermostat Wiring
Electrical Box Mounting
Figure 1
Cover Release
Cover Release
Figure 3
Direct to Wall Mounting
Figure 2
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