Wire Requirements - Aprilaire 8570 Safety And Installation Instructions Manual

WIRE REQUIREMENTS

Figure 1 and the table show the number of wires that must be available at the thermostat in stand-alone thermostat systems (i.e. not as
part of an Aprilaire ® Model 6504 Intelligent Zone System). Figure 1 shows optional connections to both an outdoor temperature sensor and
an Aprilaire Automatic Humidifier Control (AHC), but only one or the other can be used. All wire is standard 18-24 gauge thermostat cable.
®
Figure 1 – Thermostat Wire
OPTIONAL –
AUTOMATIC
HUMIDIFIER
CONTROL
(AHC)
2-WIRES
OPTIONAL –
OUTDOOR
TEMPERATURE
SENSOR
2-WIRES
MODEL 8570
THERMOSTAT
When this thermostat is connected to a Model 6504 as
shown in Figure 2, only one four-wire cable need be run
from the thermostat to the Model 6504. Use standard
18-24 gauge thermostat cable.
HVAC
EQUIPMENT
SEE
OPTIONAL –
TABLE
INDOOR
TEMPERATURE
SENSOR
2-WIRES
Application
Single-Stage Furnace/AC
Two-Stage Furnace/AC
Two-Stage Roof Top Unit
Boiler w/AC (2-transformer)
Radiant 1st Stage Heat,
Furnace 2nd Stage and AC
Single-Stage Heat Pump
Two-Stage Heat Pump
Figure 2 – Model 6504 Wire
MODEL 8570
4-WIRES
THERMOSTAT
- 2 -
# Wires Diagram (Page)
5 1 (9)
7 2 (10)
7 3 (11)
6 4 (12)
6 5 (13)
6 6 (14)
8 7 (15)
MODEL 6504