Honeywell Q674F - Manual (Page 3)

3 69-0435—10
Fig. 2—Installation of Q674 Subbase on wall.
WIRES THROUGH
WALL OPENING
WALL
WALL
ANCHORS
(2)
SUBBASE
MOUNTING
HOLES
MOUNTING
SCREWS (2)
M926
Fig. 3—Subbase components and leveling
procedure.
SPIRIT LEVEL
MOUNTING HOLES (2)
M927
TOP MOUNTING HOLES (2)
WIRING
TERMINAL
THERMOSTAT
CABLE OPENING
TO SPRING FINGER CONTACTS
ON THE THERMOSTAT
(UP TO 12)
POST (2) FOR
MOUNTING
THERMOSTAT
IMPORTANT: Use 18 gauge, color-coded thermostat
cable for proper wiring.
3. Pull wires through the cover plate (if used) and
sub-base cable opening. See Fig. 3. Take care that wires
do not fall back into the wall opening.
4. Secure the cover plate (if used) and subbase with the
screws provided. Do not fully tighten the subbase screws.
5. Level the subbase using a spirit level, as shown in
Fig. 3, and firmly tighten subbase mounting screws.
The subbase mounting holes provide for minor out-of-
level adjustments.
IMPORTANT: An incorrectly leveled subbase will cause
the temperature control to deviate from set point.
WIRING THE SUBBASE
All wiring must comply with local electrical codes and
ordinances. Follow equipment manufacturer wiring instruc-
tions when available. To wire subbase, proceed as follows:
Fig. 4—Wiring Connections.
FOR STRAIGHT
INSERTION–
STRIP 5/16 in. [8 mm]
FOR WRAPAROUND–
STRIP 7/16 in. [11 mm]
SUBBASE TERMINAL SCREW M928
BARRIER
1. Connect the system wires to the subbase as shown
in Figs. 5-11. A letter code located near each terminal is
for identification. The terminal barrier permits straight or
conventional wraparound wiring connection. See Fig. 4.
2. Firmly tighten each terminal screw.
3. Fit wires as close as possible to the subbase. Push
excess wire back into the hole.
4. Plug hole with nonflammable insulation to pre-
vent drafts from affecting the thermostat.