Honeywell TR40, TR42 Installation Instructions
Zio® Lite TR40/42 LCD and
CAUTION
non-LCD Wall Modules
INSTALLATION INSTRUCTIONS
BEFORE INSTALLATION
Fig. 1. LCD Wall Module.
Erratic System Operation Hazard.
Failure to follow proper wiring practices can
introduce disruptive electrical interference (noise).
Keep wiring at least one foot away from large inductive
loads such as motors line starters, lighting ballasts,
and large power distribution panels.
Shielded cable is required in installations where these
guidelines cannot be met.
Ground the shield only to the grounded controller
case.
IMPORTANT
All wiring must comply with local electrical codes and
ordinances or as specified on installation wiring diagrams.
— For information on Sylk bus distance limitations, see
Table 1 on page 2.
— All wiring is polarity insensitive.
INSTALLATION
Mount the wall module on an inside wall approximately 54 in.
(1372 mm) from the floor (or in the specified location), to allow
exposure to the average zone temperature. Do not mount the
wall module on an outside wall, on a wall containing water
pipes, or near air ducts. Avoid locations that are exposed to
discharge air from registers or radiation from appliances,
lights, or the sun.
The wall module can be mounted on a wall, on a standard
utility conduit box using No. 6 (3.5 mm) screws or on a 60 mm
wall outlet box (see Fig. 3). When mounting directly on a wall,
use the type of screws appropriate for the wall material.
2-3/8 (60)
4-41/64
(118)
3-1/4
(83)
2-3/8
(60)
2-3/8 (60)
3-11/64 (81)
Fig. 2. Subbase mounting holes and locking tabs.
M34633
62-0467-05
ZIO® LITE TR40/42 LCD AND NON-LCD WALL MODULES
CAUTION
M34634
STANDARD UTILITY
CONDUIT BOX
SUBBASE
NO. 6 SCREW
60 mm WALL
OUTLET BOX
SUBBASE
3.5 mm SCREW
WALL MODULE
WALL
MODULE
53/64 (21)
M34635
3-5/16 (84)
4-49/64
(121)
Fig. 3. Mounting on standard utility conduit box or
60 mm wall outlet box.
Fig. 4. LCD Wall Module dimensions in inches (mm).
Wiring
All terminal connections can be made to the backside of the
module. There are no field adjustable/replaceable
components inside the module.
Attach the wires from the programmable controller and
network to the appropriate wall module terminals, as indicated
in Fig. 6 on page 3.
Improper Electrical Contact Hazard.
Screw-type terminal blocks are designed to accept
no more than one 14AWG (2.5mm sq) conductor.
Connect multiple wires that are 14AWG (2.5mm sq)
with a wire nut. Include a pigtail with this wire group
and attach the pigtail to the individual terminal block.
Wiring Wall Modules
Wire the terminal block shown in Fig. 6 as follows:
1. For single wires, strip 3/16 in. (5 mm); for multiple wires
going into one terminal, strip 1/2 in. (13 mm) insulation
from the conductor. See Fig. 5 for wiring multiple
TR40/42s.
2. Insert the wire in the required terminal location and
tighten the screw to complete the termination.
3. Review and verify the terminal connection wiring
illustrated in Fig. 6.
Table 1.
Recommended maximum distance
from controller to any Sylk device
Standard
thermostat wire,
(non-twisted),
Single twisted pair,
non-shielded,
Quantity and type
of device
a
10 wall modules,
any type
4 Sylk field devices
of any type
(including Zelix)
10 Sylk field
devices of any type
(excluding Zelix)
a
For Spyders, use the Resource Usage View in the Spyder Tool
stranded or solid
18-22 AWG 24 AWG 18-24 AWG
500 ft
(150 m)
400 ft
(120 m)
400 ft
(120 m)
400 ft
(120 m)
300 ft
(100 m)
300 ft
(100 m)
shielded or non-
shielded, stranded
b
or solid
c,d
100 ft
(30 m)
100 ft
(30 m)
100 ft
(30 m)
to determine the maximum number of devices. For ComfortPoint™ Open controllers, there is a maximum of 3 TR40/42s.
b
As a rule of thumb, single twisted pair (2 wires per cable
only), thicker gauge, non-shielded cable yields best results
for longer runs.
c
The 30 m distance for standard thermostat wire is conserva-
tive, but meant to reduce the impact of any sources of electrical noise (including but not limited to VFDs, electronic
ballasts, etc). Shielded cable recommended only if there is a
need to reduce the effect of electrical noise.
d
These distances also apply for shielded twisted pair.
62-0467—05 2
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