Microtech Ii Remote Wall-Mounted Sensor - Daikin ARQ Installation Manual

MicroTech II™ Remote Wall Mounted Sensor
WARNING
Rigorously adhere to field wiring procedures regarding proper
lockout and tagout of components.
WARNING
To avoid electrical shock, personal injury or death:
1. Installer must be qualified, experienced technician.
2. Disconnect power supply before installation to prevent
electrical shock and damage to equipment.
3. Make all connections in accordance with electrical wiring
diagrams, and in compliance with national and local codes.
Use copper conductors only.
4. Do not exceed ratings of the device. This is a low voltage
device: Never apply more than 12VAC/VDC to any lead or
damage will result.
5. Avoid locations where excessive moisture, corrosive fumes,
or vibrations are present.
Figure 54: Basic Remote Wall Sensor
Sensor
When Using A Remote Wall Mounted
Temperature Sensor
If a decision is made to use a Remote Wall Mounted Temperature
Sensor instead of the unit mounted room air sensor then placement of
the Remote Wall Mounted Temperature Sensor is critical for proper
room temperature sensing (see figures 55 and 56). The UVC is capable
of using one of two remote wall mounted temperature sensors. Figure
59 shows a 4-wire connection (plus shield drain wire) (see table 14).
It is recommended that additional wires be pulled to compensate for
potential wire breakage or future options. The Basic Wall Mounted
Temperature Sensor requires only 3-wires (plus shield drain wire) since
the Basic Wall Mounted Temperature Sensor has no setpoint adjustment
(see figure 59).
NOTICE
All MicroTech II equipped unit ventilators are provided as standard
with a unit mounted space temperature sensor. The unit mounted
temperature sensor is provided with a quick disconnect plug (white)
located outside of box with numbered wires 101 and 102. When
using a remote wall mounted temperature sensor the unit mounted
temperature sensor quick disconnect plug must be separated so
that the unit mounted sensor is disconnected from the UVC.
Page 32 of 42
LED
Tenant Override Button
Self-Contained WSHP Unit Ventilator Models ARQ, ERQ, GRQ
Figure 55: Correct Wall Sensor Locations
Window Exposure
Interior Wall
Window Exposure
Interior Wall
Interior Wall
Figure 56: Incorrect Unit and Wall Sensor Locations
Window Exposure
Unit
Interior Wall
Cubicle Wall
Interior Wall
Interior Wall
Window Exposure
Note:
Avoid placing wall sensor near drafty areas such as doors or windows.
Avoid external walls, or dead spots near exposed columns. Avoid
direct sunlight on wall sensor.
Table 14: Max Sensor Wire Length and Gauge
Maximum sensor wire length for less than 1°F error
Gauge
14 AWG 800 ft. (244 m)
16 AWG 500 ft. (152 m)
18 AWG 310 ft. (94 m)
20 AWG 200 ft. (61 m)
22 AWG 125 ft. (38 m)
= Correct Sensor Location
Window Exposure
Unit
Interior Wall
= Incorrect Sensor Location
Shelving
File Cabinet
Interior Wall
Shelving
Window Exposure
Length
IM 1083