Wiring Guide

PC700 Boiler Reset Control Connected to SR501-EXP Switching Relay
ZONE
CONTROL
BOIL
SEN
OUT
SEN
BOILER SENSOR
OUTDOOR
SENSOR
PC700
SWITCH SETTINGS
Master/Slave: Master
Reset/Normal: Reset
SYSTEM
CIRCULATOR
TO: "TT" ON BOILER
POWER
ZONE 1
LED
INDICATORS
FUSE
6 AMP
FUSE
6 AMP
SR 501-EXP-4
POWER
CONTROLS
SLAVE
PRIORITY ON
RESET
PRIMARY PUMP ON
POST PURGE ON
PRIORITY PROTECT ON
PUMP EXERCISE ON
30 SEC/2 WK
MASTER
OFF
OFF
OFF
OFF
OFF
NORMAL
4 MIN/24 HOUR
ACCESSORY
PORT
HN/O N H
120 VAC
CIRCULATOR
PRIMARY
OUTPUT
N/C
INPUT
120 VAC
END
SWITCH
RESET
OVERRIDE
THERMOSTATEXPANSION
X W
R
X1A2CB
24 VOLTS AC ONLY
C
SINGLE ZONE
EXPANDABLE SWITCHING RELAY
THERMOSTAT
T
120 VAC INPUT
H
N
BOILER
To: DHW Aquastat if PC700
Boiler Reset Temperature is
to be overridden during
DHW call.
NOTE 1: Terminals C are for
optional 24V thermostat
COMMON connections.
16