Specifications

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2 McQuay ED 9043

Features

The T170 thermostat can enhance your HVAC system by

offering you the following performance features.

• Automatic heat/cool system changeover

• Fossil fuel or electric heat compatible

• Large luminescent display and industry first lighted keypad

• Permanent program memory

• Configuration menu allows keypad selection of options, no

additional sub-bases required

• Selectable energy management recovery

• Onboard system and thermostat diagnostics

• Single stage models accept remote indoor sensor

• Staging models accept up to three indoor sensors and offer

temperature averaging or weighted average by sensor

location and program time

Specifications

Table 1: Thermostat specifications

Terminals (typical connection to MPS I)

Use the terminal output information below to help you wire the

thermostat properly for your multi-stage system.

1 On 3 - 6 ton units, a terminal block is not supplied. Use a

wirenut to extend from the leads provided in the unit to the

thermostat.

2 W1, W2, and Y2 are optional depending upon the size and

selected options of the unit.

3 Colors shown above are typical for the MPS I.

Electrical Rating Single

Stage:

mV to 30 V (ac), NEC Class II, 50/60

Hz or DC

Electrical Rating Staging:

20 to 30 V (ac), NEC Class II

Terminal Load:

5 A per terminal, 2.5 A max. combined

Setpoint Range:

45° to 99°F (7° to 37°C)

Anticipation, Heating:

Adjustable

Anticipation, Cooling:

Adjustable

Rated Differential Single

Stage:

Heat 0.5° to .5°F, Cool 0.8° to 2.2°F

Rated Differential Staging:

Heat 0.5° to .5°F, Cool 0.5° to 2.2°F

Operating Ambient:

32° to +0°F (0° to +43°C)

Operating Humidity

90% non-condensing max.

Shipping Temperature Range:

-4° to 50°F (-20° to 65°C)

Dimensions (H x W x D):

4 1/8" x 6 7/8" x 1 3/8"

Thermostat Terminals (Upper)

L PH D SA SB SC OT

Malfunction Light X-10 Module Input Not Used Remote

Sense A

Remote

Sense B

Remote

Sense C

Outdoor

Sensor

Thermostat Terminals (Lower)

System E C R W3/A1 W2 E2/P W1 Y2 Y1 B O G

Multi-Stage No Function 24 Volt

(Common)

24 Volt

(Hot)

Heat Mode

3rd Stage

Heat Mode

2nd Stage

No Function Heat Mode

1st Stage

Cool Mode

2nd Stage

Cool Mode

1st Stage

Energized

in Heat and

Off Mode

Energized

in Cool

Mode

Blower/Fan

Energized on call

for Cool (and heat

if configureed to

Electric Heat

Terminal Block

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