McQuay T170 Installation Manual

Installation and Maintenance Manual IM-846

Group: Fan Coil

Part Number: IM 846

Date: July 2006

T170 Thermostat

24 VAC/120–277 VAC

3-Speed Fan Control (Continuous or Cycling) or Staged Fan Control

USUS

Contents

Installation Instructions . . . . . . . . . . . . . . . . . . . . . 3

Thermostat Model and Part Number . . . . . . . . . . . . . . . . . . . . . . . . 3

Optional Occupancy Detection Sensors/Kits . . . . . . . . . . . . . . . . . . 3

Mounting and Wiring the Thermostat . . . . . . . . . . . . . . . . . . . . . . . . 3

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Thermostat Button Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

System Button Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

UP/Down Arrow Button Operation . . . . . . . . . . . . . . . . . . . . . . 5

Fan Button Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Speed Button Operation (TA170-001) . . . . . . . . . . . . . . . . . . . 5

F/C Button Operation (TB170-001) . . . . . . . . . . . . . . . . . . . . . 5

Verifying Thermostat Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Thermostat Menu Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Menu Function Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Menu Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Condensate Overflow Interrupt . . . . . . . . . . . . . . . . . . . . . . . . 6

Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Standard Fan Configuration (TA170-001). . . . . . . . . . . . . . . . 7

Staged Fan Configuration (TB170-001) . . . . . . . . . . . . . . . . . 7

Controlled Off Factory Configuration . . . . . . . . . . . . . . . . . . . 7

Fancoil Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2-Pipe Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4-Pipe Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Setback Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Optional Occupancy Detection Equipment Opera-

tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

SB200-001 Occupancy Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

SD200-001 Occupancy Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SD200-002 Occupancy Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Installation Instructions

WARNING

• BEFORE ATTEMPTING TO INSTALL, OPERATE, OR

SERVICE THIS THERMOSTAT, CAREFULLY READ THESE INSTRUCTIONS.

• Failure to observe safety information and comply with instructions could result in PERSONAL INJURY, DEATH, AND/OR PROPERTY DAMAGE.

• To avoid potential fire and/or explosion, do not use in potentially flammable or explosive atmospheres.

• Retain these instructions for future reference. This product, when installed, is part of an engineered system whose specifications and performance characteristics are not designed or controlled by McQuay. You must review your application and national and local codes to assure that your installation is functional and safe.

DANGER

Hazardous voltage. To avoid electrical shock or damage to equipment, disconnect power before installing or servicing. Failure to follow these instructions will result in death or serious injury.

Installation Instructions

Mounting and Wiring the Thermostat

The thermostat base mounts to a field provided 4″ × 4″ outlet

box with a 2 assembly mounts to the thermostat base.

Figure 1: Mounting the thermostat

To avoid damaging the unit, make all wiring connections inside the box.

″ × 4″ mud ring (Figure 1). The thermostat cover

4 × 4 outlet box

CAUTION

2 × 4 mud ring

Cover locking snaps (both sides)

Base

Cover assembly

Thermostat Model and Part Number

McQuay offers two different thermostats depending on the fan speed control used (Table 2).

Table 1: Thermostat model and part numbers

Thermostat Model # McQuay Part # Fan Speed Control

TA170-001 107345335

TB170-001 107345336

Note – For a list of thermostat features, refer to ED 3611.

3-Speed Fan Control

Staged Fan

Optional Occupancy Detection Sensors/Kits

In addition to the T170 thermostat, McQuay offers optional occupancy detection sensors (see page 9) that can be ordered and used in conjunction with the thermostat. When ordering, use the associated kit number(s) provided in Table 2.

Table 2: Occupancy sensor model and kit numbers

Sensor Model # McQuay Kit #

SA200-001 6677877211

SB200-001 6677877311

SD200-001 6677877411

SB200-002 6677877511

Disconnect power before installing or servicing.

2 Run line voltage wiring (and low voltage wiring if

applicable) into the field provided outlet box and mud ring (Figure 1).

3 Locate all connections within the mud ring/connection box

and wire nut all unused wires.

4 Remove the thermostat cover assembly from its base to

gain access to the circuit board (Figure 2).

Figure 2: Circuit board

McQuay IM 846 3

Installation Instructions

On the circuit board, set the voltage selection switch (Figure 2) to the appropriate voltage for the application

• 24 V = 24 VAC

• 110–277 V = 120, 240, or 277 VAC.

Note:

The circuit board is shipped with the voltage selection switch in the 110-227 V position. For 24 VAC use, the switch must be in the 24 V position.

CAUTION

Before applying power, the voltage selection switch must be in the appropriate position. Failure to select the correct voltage can cause thermostat malfunction or permanently damage the thermostat.

6 The circuit board is also equipped with configuration

jumpers (JP1, JP3, and JP4 in Figure 2). Depending on the application, it may be necessary to reconfigure the following jumpers:

•JP4: 2/4 Pipe Sensor Jumper - This jumper selects between 2-pipe (jumper ON) and 4-pipe (jumper OFF) operation (see “Fan Operation” on page 7).

•JP3: Door/Window Switch Jumper - This jumper is shipped normally open. Placement of a jumper allows for occupancy detection and door/window switch only operation (see “Optional Occupancy Detection Equipment Operation” on page 9).

•JP1: Removal of this jumper allows the sensor to be located in a remote location.

CAUTION

To use a remote sensor on units with local sensing capability, remove jumper JP1 to disable local sensing. Failure to remove JP1 can cause improper operation of the thermostat with a remote probe installed.

7 Connect the color coded thermostat wires (Figure 3) to the

line voltage wires located in the mud ring/connection box and secure the connections with wire nuts.

Figure 3: Wiring diagram

White/Black

White/Yellow

White/Violet

LOW VOLTAGELINE VOLTAGE

White/Blue

White/Gray

Yellow

Blue

Red

White/Brown

White/Red

THERMOSTAT CONNECTIONS

White/Orange

Brown

Black

Setback input/door switch

Circuit common

Occupacy detector

Cool

(main output)

Heat

(secondary output)

Fan low

Fan medium

Fan high

Outside air

Remote probe

Pipe sensor

L2/Neutral

Outputs

(see ratings)

Accessories

available

from

McQuay

CAUTION

Use copper wire only. Insulate or wire nut all unused leads. Avoid electrostatic discharge to the thermostat. Failure to do so can cause thermostat malfunction or permanently damage the thermostat.

8 Install the thermostat base to the mud ring/outlet box using

two furnished mounting screws. Tighten the screws evenly but do not over tighten.

Note: An output ratings chart (Table 3) is located on the

inside of the base.

Table 3: Output ratings

Output ratings

Voltage

24 VAC NA NA NA 24 VA NA

120 VAC 5.8 34.8 6.0 125 VA 1/4

240 VAC 2.9 17.4 5.0 125 VA 1/4

277 VAC 2.4 14.4 4.2 125 VA 1/4

Inductive

FLA LRA

Resistive

amps

Pilot duty HP

DANGER

Hazardous voltage. Combined load current is not to exceed 20 amps. Mount only to a grounded metallic box. Low voltage wiring is Class 2. To avoid electrical shock or damage to equipment, disconnect power before installing or servicing. Failure to follow these instructions will result in death or serious injury.

With the base now secured, verify that the circuit board is firmly snapped into the cover and is not dislodged.

10 Install the cover assembly to the base, pressing firmly to

engage the cover locking snaps.

4 McQuay IM 846

+ 8 hidden pages