Aerco KC Series Installation, Operation & Maintenance Instructions

INSTALLATION
2-7
2.6.1 CONSTANT SETPOINT MODE
The Constant Setpoint Mode is used when it is
desired to have a fixed setpoint that does not
deviate. No wiring connections other than
electrical supply connections are required for
this mode. However, if desired, fault monitoring
or enable/disable interlock wiring can be utilized
(see paragraphs 2.7.9 and 2.7.10).
2.6.2 INDOOR/OUTDOOR RESET MODE
This mode of operation increases supply water
temperature as outdoor temperatures decrease.
An outside air temperature sensor (AERCO PN
122790) is required. The sensor MUST BE
wired to the I/O Box wiring terminals (see Fig.
2.11). For more information concerning the
outside air sensor installation, refer to paragraph
2.7.1. For programming and setup instructions
concerning the indoor/outdoor-reset mode of
operation, refer to Section 5, paragraph 5.1.
Figure 2.10
Input/Output (I/O) Box Location
mA OUT
RS-485
+
COMM.
-
+
-
ANALOG IN
SENSOR COMMON
OUTDOOR SENSOR IN
REMOTE INTL'K IN
B.M.S. (PWM) IN
SHIELD
+
-
+
-
AUX SENSOR IN
NOT USED
EXHAUST SWITCH IN
DELAYED INTL'K IN
FAULT RELAY
120 VAC, 5A, RES
AUX RELAY
120 VAC, 5A, RES
G
NOT USED
NOT USED
NC
COM
NO
NC
COM
NO
RELAY CONTACTS:
120 VAC, 30 VDC
5 AMPS RESISTIVE
DANGER
120 VAC USED
IN THIS BOX
NOT USED
Figure 2.11
I/O Box Terminal Strip

Aerco KC Series Specifications

General

Brand	Aerco
Model	KC Series
Category	Water Heater
Language	English