American Standard Silver 302 and 303 Touchscreen Thermostat
Part No. 37-7775005
09/2020 11-HD17D1-1C-EN 3
SPECIFICATION DESCRIPTION
Product Models
ACONT302 and 303
Products
302/303
Size
4-9/16” x 5-13/16” x 1-3/16” (HxWxD)
Configurations
Heat Pump, Heat/Cool, Dual Fuel, Heat Only, Cooling Only
Maximum Number of Stages
4 Stages Heat, 2 Stages Cooling
Operating Temperature
32°F to 105°F (0 to +41°C) / 90% RH Non Condensing
Shipping Temperature Range
-40 to 150°F (-90 to +65°C)
Input Power (DC)
Two 1.5V AA Alkaline
Input Power (AC)
20-30 VACm NEC Class 11m 50/60 HZ
Terminal Load
1.5A per Terminal, 2.5A Maximum, all Terminals Combined
Wire Usage
18 AWG
System Modes
Auto, Heating, Cooling, Off, Emergency Heat
Fan Modes
Auto, On, Program
Setpoint Temperature Range
45°F to 99°F, (7 to 37°C)
Humidification Setpoint Range
5 to 50% (303 only)
Dehumidification Setpoint Range
40 TO 95% (303 only)
Indoor Temperature Display Range
32°F to 99°F
Outdoor Temperature Display Range
-40°F to 140°F
Indoor Humidity Display Range
0°F to 100°F
RATED DIFFERENTIALS
Fast
Slow
Heat (Single Stage/Multi-Stage)
0.6°F
1.5F
Cool (Single Stage/Multi-Stage)
1.2°F
1.7°F
Heat Pump
1.2°F
1.7°F
Emer Heat
0.6°F
1.7°F
THERMOSTAT APPLICATION GUIDE
Thermostat Configuration Options
Thermostat Applications
Maximum Stages Heat/Cool
Single Stage 1 No Heat Pump (SS1)
Gas, Oil, Electric, Heat Only, Cool Only or Heat/
Cool Systems, 2 or 3 wire Hydronic Zone (Hot
Water or Steam) Systems, 24 Volt or Millivolt
1+1
Multi Stage 2 No Heat Pump (MS2)
2+2
Heat Pump 1
Single Stage Compressor Heat Pump (HP1)
Single Stage Compressor Heat Pump Systems -
up to 2 Stages Aux./Emergency Heat
3+1
Heat Pump 2
Two Stage or Two Compressor Heat Pump (HP2)
Two Stage or Two Compressor Heat Pump
systems - up to 2 Stages Aux./Emergency Heat
4+2
*On every application, 24VAC loads should be reviewed to be sure the indoor unit control power transformer is adequately sized.
2. Product Specifications
3. General Information
3.1 Overview
The 302 and 303 are programmable thermostats with 5” diagnoal,
blue backlit, touchscreen displays. The 303 features a built-
in humidity sensor that may be used to control a whole house
humidifier (HM) and cooling dehumidification (DHM).
3.2 Contents
— 1-Thermostat
— 1-Sub-base
— 2-Phillips slotted head mounting screws
— 2-Nylon Drywall Anchors
— 1-Installation Guide / User Guide
3.3 Accessories
— Wired Remote Indoor Sensor ZZSENSAL0300AAA
— Wired Remote Outdoor Sensor BAYSEN30ATEMPAA
— Wall Cover Plate BAYCOVR300AA