MTD 248-604A Manual de instalación descargar pdf (Pagina 32)

Page 32 of 42 Self-Contained WSHP Unit Ventilator Models ARQ, ERQ, GRQ IM 1083

Maximum sensor wire length for less than 1°F error

Gauge Length

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)

Rigorously adhere to eld wiring procedures regarding proper

lockout and tagout of components.

MicroTech

II™

Remote Wall Mounted Sensor

To avoid electrical shock, personal injury or death:

1. Installer must be qualied, 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.

Window Exposure

Interior Wall

Unit

= Correct Sensor Location

Figure 55: Correct Wall Sensor Locations

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.

Window Exposure

= Incorrect Sensor Location

Window Exposure

Interior Wall

Window Exposure

Unit

Interior Wall

Window Exposure

Cubicle Wall

Shelving

File Cabinet

Shelving

Figure 56: Incorrect Unit and Wall Sensor Locations

Figure 54: Basic Remote Wall Sensor

LED

Tenant Override Button

Sensor

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.

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 gures 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 gure 59).

Table 14: Max Sensor Wire Length and Gauge

WARNING

NOTICE

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 41 42

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MTD 248-604A Manual de instalación Pagina 32

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