Installation Guide

92
Do it Once. Do it Right.
®
TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: [phone] FAX: [phone].
TACO (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: [phone]. FAX: [phone].
Visit our web site at: http://www.taco-hvac.com
Printed in USA
Copyright 2010
TACO, Inc.
SR501-HC-4 Switching Relay Instruction Sheet (page 2)
ONE ZONE HC
S
WITCHING RELAY
SR 501-HC-4
LED
INDICATORS
R
W1
2
4 VAC THERMOSTAT
W2
COM
24
VAC
TT T
NHX1
RELAY 2RELAY 1
120 VAC
INPUT
2
40 VAC
CIRCULATOR
X1
X2
X2
N
H1
H
2
ONE ZONE, NO BOILER ENABLE
(CONTROL & CIRCULATOR SAME POWER SOURCE)
CONTROL POWER
I
NPUT (120 VAC)
POWER
RELAY 1
RELAY 2
(240 VAC)
{
{
ONE ZONE HC
SWITCHING RELAY
SR 501-HC-4
LED
INDICATORS
R
W1
2
4 VAC THERMOSTAT
W2
COM
24
VAC
TT T
NHX1
RELAY 2RELAY 1
120 VAC
INPUT
240 VAC
CIRCULATOR
X1
X2
X2
N
H1
H2
ONE ZONE, NO BOILER ENABLE
(CONTROL & CIRCULATOR DIFFERENT POWER SOURCE)
H
POWER
RELAY 1
RELAY 2
CONTROL POWER
INPUT (120 VAC)
(240 VAC)
{
{
ONE ZONE HC
SWITCHING RELAY
S
R 501-HC-4
LED
INDICATORS
R
W1
W2
COM
24
VAC
TT T
NHX1
RELAY 2RELAY 1
120 VAC
INPUT
C
IRCULATOR #1
(
120 VAC)
X1
X2
X2
N
TWO ZONE, NO BOILER ENABLE
H
CIRCULATOR #2
(120 VAC)
THERMOSTAT #2
(24 VAC)
T
HERMOSTAT #1
(
24 VAC)
POWER
I
NPUT
(
120 VAC)
POWER
RELAY 1
R
ELAY 2