Watts AERCO SmartPlate SP23 User Manual

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 3 – FUNCTIONAL DESCRIPTION
OMM-0069_0H • SP-100 • 1/30/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 25 of 134
120 VAC, 60 Hz
OR
220 Hz, 50 Hz
HEAT
EXCHANGER
MIXED
TEMP
24 VAC XFMR
WITH 3A, 24 VAC
CKT BRKR
POWER INPUT
OVER-TEMP
SWITCH
CONTROL BOX
CIRC
PUMP
DOMESTIC WATER
DOMESTIC
COLD
WATER IN
TEMPERATURE
CONTROLLER
DHW DUAL OUTLET TEMP
MIXED IN
BW OUT
BW IN
STRAINER
A
AB
3-WAY
24 VAC
0 – 10 V
DHW
OUT
B
FEED FORWARD TEMP
DHW OUT
BOILER
WATER (BW)
OUT
STRAINER
POWER
SWITCH
TO CIRC
PUMP
TC
OUT
TC
IN
BOILER
WATER (BW)
IN
(SEE NOTE 1)
( SEE NOTE 2)
NOTES:
1. THE BW TC IN & BW TC OUT THERMOCOUPLES ARE CONNECTED TO DISPLAY DEVICES IN THE
CONTROL BOX. THESE ARE “INDICATION ONLY” DISPLAYS WHICH MAY BE USER-CONFIGURED FOR
ALARM SETTINGS.
2. THE BOILER WATER BYPASS LINE IS NORMALLY OPEN (3-WAY VALVE CONFIGURATION). FOR A
2-WAY CONFIGURATION, CLOSE THE VALVE ON THE BYPASS LINE. ENSURE THAT A BYPASS LINE IS
INSTALLED EXTERNAL TO THE SMART PLATE.
DHW OUTLET TEMP
F
FUSE
TC MIX
TC DUAL
Figure 3-1. SmartPlate Water Heater Functional Block Diagram
120 VAC, 60 Hz
OR
220 VAC, 50 Hz
or
220 VAC, 60 Hz

Watts AERCO SmartPlate SP23 Specifications

General

Brand	Watts
Model	AERCO SmartPlate SP23
Category	Water Heater
Language	English