Manual 2100-647
Page
25 of 28
Terminal
Description
MC Terminal Connection
Series "2"
Reference
1
Compressor on Output Signal from Jade
Not Used
"A"
2
24VAC HOT
from Terminal 2 Connected to Unit Transformer to Thermostat
"R" on Tstat
"R"
3
24VAC COMMON
from Unit Transformer to Thermostat
"C" on Tstat
"C"
4
Unit Compressor Operation, Unit Receives Signal from MC for Compressor/
Condenser Fan On
"Y" on Tstat
"Y"
5
Close Damper Input (Close Blade 100%)
Not Used
"F"
6
Electric Heat On Operation, Stage 1 and 2, Unit Receives Signal from Thermostat
"W" on Tstat
"W1"
7
1st Stage Cooling Input, 1st Stage Cooling Signal – Economizer Use Only
Economizer 24V Signal
"Y1"
8
2nd Stage Cooling Input, 2nd Stage Cooling Signal – Economizer Use Only
Economizer 24V Signal
"Y2"
9
Blower Operation (Indoor Blower On), Unit Receives Signal from Thermostat
"G" on Tstat
"G"
10
Filter Switch Normally Closed Dry Contacts
Not Used
"4"
11
Filter Switch Normally Closed Dry Contacts
Not Used
"5"
12
Blade Switch Delay Relay Normally Closed Dry Contacts
Not Used
"8"
13
Blade Switch Delay Relay Normally Closed Dry Contacts
Not Used
"9"
14
Occupied Signal Input, Econ Emergency Open (Open Blade 100%)
Not Used
"E"
15
Econ Open Output (
6V HOT, 24V HOT
after Blade Open 100% and Delay)
Not Used
"10"
16
Alarm Relay Common Dry Contact
Not Used
"3"
17
Alarm Relay Normally Open Dry Contact
Not Used
"2"
18
Alarm Relay Normally Closed Dry Contact
Not Used
"1"
19
24VAC HOT
to Terminal 2 from Unit Transformer Through Smoke Alarm Jumper
Wire*
Building Smoke Alarm
(optional)
"RT"
20
2nd Stage Heating On Operated Through Jumper to Terminal 6
Not Used
"W2'
21
Blade Switch Terminal
24V HOT
When Blade is Open, Sends Signal from Switch
to Delay Relay
Not Used
"7"
TABLE 13
Unit Low Voltage Terminal Connection Chart – Cooling/Heating Thermostat
* Replace jumper wire with smoke alarm connections to interrupt 24VAC unit power if smoke alarm is used in shelter. Jumper can also
be removed to break 24VAC power to unit.
