Smart Temp SmartZone SZ2-240 Wiring Diagram

240V

Typical A/C unit

*HP Mode

Fan

Heat *(R/V)

Power Open

Cool *(COMP)

Heat 2

Switched Output

Voltage Max 240V 10amps

Power Open

Power Close

Power Close

Damper Supply

Damper Actuator 2

Damper Actuator 1

42157 Thermostat

W/BW/B

GG

Y/OY/O

RCRC

RHRH

Heat 1

240V

INPUT

24Ac Fuse

Fuse

500ma

* Dip switch ONE ON
for Heat Pump Mode

( Cool relay energized with heat call)

Dip Switch ONE must be OFF for Gas
Heat with Add on Cooling Installations`

Fan

ON

*

STD

HP

Cool

W1

Relay

Common

11

Zone 1 StatZone 1 Stat

W2

GGYYRRX

Equipment Fuse

Diagnostics Leds

24Vac

Fuse

W1

NO1

15amp

Zone 2 StatZone 2 Stat

W2

NC1 Nc2

24Vac

X

Heat 2

2
1

Relay

NO2

Common

SmartZone

2 ZONE LOGIC PANEL2 ZONE LOGIC PANEL

SZ-2HP/240

N/A

15amp

Fuse

Damper Fuse

42157 Thermostat

W/BW/B

GG

Y/OY/O

RCRC

RHRH

Drawing Revision History

07.05.2002

Smart Temp

Installation Drawing

Drawing Name

SZ-2 HP/HC- 240 Zone control

SZ-2 HP/HC- 240 Zone control

with 42-157

with 42-157

All care has been taken in the preparation of this drawing however
Smart Temp Australia accept no responsibility for damage that may

REV A

By: JK

be caused by using this information. This is a guide only.

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