Honeywell T874/Q674 Benutzerhandbuch

60-1147-4

2

M925

VERTICAL 
OUTLET
BOX

ADAPTER
RING

SUBBASE

COVER 
PLATE

MOUNTING
SCREWS (2)

MOUNTING
SCREWS (2)

1

SUBBASE

MOUNTING
SCREWS (2)

HORIZONTAL
OUTLET
BOX

1

2

2

1   NOT INCLUDED WITH UNIT.

2   ACCESSORY PARTS AVAILABLE (193121A).

WIRES THROUGH
WALL OPENING

WALL 

WALL
ANCHORS
(2)

SUBBASE

MOUNTING
HOLES

MOUNTING
SCREWS (2)

M926

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

Install the thermostat about 5 ft [1.5 m] above the floor in

an area with good air circulation at average temperature.

Do not install the thermostat where it can be affected by:
— drafts, or dead spots behind doors and in corners.
— hot or cold air from ducts.
— radiant heat from sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall

behind the thermostat.

The thermostat subbase can be mounted on a vertical

outlet box, horizontal outlet box or directly on the wall.

1. If you must mount the subbase on a vertical outlet box,

order 193121A Adapter Assembly (Fig. 1). The as-sembly
includes an adapter ring, two screws and a cover plate to cover
marks on the wall. Install the ring and cover plate on the
vertical outlet box.

For a wall installation, hold subbase in position and mark

holes for anchors (Fig. 2). Obtain wall anchors locally. Take
care that the wires do not fall back into the wall opening. Set
aside subbase. Drill four 3/16 in. [4.8 mm] holes and gently
tap anchors into the holes until flush with the wall.

2. Pull wires through the cover plate (if used) and subbase

cable opening (Fig. 3).

3. Secure the cover plate (if used) and subbase with the

screws provided. Do not fully tighten the subbase screws.

4. Level the subbase using a spirit level, as shown in  Fig.

3, and firmly tighten the subbase mounting screws. The
subbase mounting holes provide for minor out-of-level ad-
justments.

IMPORTANT: An incorrectly leveled subbase will cause

IMPORTANT: Use 18-gauge color-coded thermostat cable

Disconnect power supply before beginning installation to

prevent electrical shock or equipment damage.

All wiring must comply with local electrical codes and

ordinances. Follow equipment manufacturer wiring instruc-
tions when available. To wire subbase, proceed as follows:

1. Connect the system wires to the subbase as shown in

Figs. 5-7. A letter code located near each terminal is for
identification. The terminal barrier permits straight or con-
ventional wraparound wiring connection (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 prevent

drafts from affecting the thermostat.

1. Remove the thermostat cover by pulling the bottom

edge of the cover outward and away from the base until it
snaps free of the mounting slots.

NOTE: The cover is hinged at the top and must be re-moved

by pulling outward at the bottom.