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C
s
s
ommeRCial
pliT
ysTems
1. Disconnect all electrical power to the unit.
2. Mount the enclosure in a convenient location near the
control box.
3. Secure the NTC1 baseplate to the enclosure using the
screws provided.
IMPORTANT
Do not remove the NTC1−1 baseplate.
BASEPLATE
Figure 2. NTC1 Network Thermostat Controller
(A113) Mounting Hole Locations
Heartbeat LED
See following table for LED function and "Figure 1. NTC1
Network Thermostat Controller" on page 2 for location.
Table 1. Heartbeat LED
LED
Green on for 1 second, off for 1
second
Green on for 3 seconds, off for 3
seconds
Red on for 1 second, off for 1
second
Pushbutton
A short push of the pushbutton by−passes on/off delays.
The heartbeat LED indicates when the delay is initiated.
See "Table 1. Heartbeat LED" to reset the controller, press
and hold the pushbutton.
Manual Output Test Switches
Manual switches simulate a thermostat demand to confirm
proper unit operation. Switches have three positions: on,
off, and auto. Place switches in the auto position for normal
unit operation. Place switch in the off position to disable
the output and in the on position to test unit function. See
the following figure.
MOUNTING
HOLES IN
EACH
CORNER
Indicates
Normal operation.
Delay initiated
No run lockout
Figure 3. Manual Output Test Switches
Unit Address DIP Switches
See "Figure 1. NTC1 Network Thermostat Controller" on
page 2 for DIP switch location.
Table 2. Address Values
DIP Switch Label
1
2
3
4
5
• Assign a unique address for each building controller
attached to the network.
• The address of each building controller will be 100 plus
the address set by the switches. For two examples,
see the following figure. Up to 31 unique addresses are
available.
Example of Address 101
Figure 4. Unit Address Dip Switches
Configuration DIP Switches
T
U
- s
ypes of
niTs
Set configuration DIP switches 1 and 2 to identify the type
of unit. See the following table and figure.
NOTE: Switches 7 and 8 should be OFF.
Table 3. Configuration DIP Switches
Switch 1
Switch 2
OFF
OFF
ON
OFF
OFF
ON
ON
ON
Page 3
ON
AUTO
Value
1
2
4
8
16
Example for Address 113
DIP Address 1 + 3 + 4 = 113
1
2
wiTChes
and
Type of Unit
Electric Cool/Electric Heat
Heat Pump Type 1 Unit
Heat Pump Type 2 Unit
Electric Cool/Gas Heat
OFF
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