MS — Motor Switch
NEC — National Electrical Code
P1 — Field Wiring Terminal Block
RVS — Reversing Valve Solenoid
S-WTR — Source Water
TRANS — Transformer
Factory Line Voltage Wiring
Factory Low Voltage Wiring
Field Line Voltage Wiring
Field Low Voltage Wiring
Printed Circuit Trace
AL — Alarm Relay Contacts
ASTAT — Aquastat Device
COMP — Compressor
CC — Compressor Contactor
DTS — Discharge Temperature Switch
FP1 — Sensor, Source Low Temp Protection
FP2 — Sensor, Load Low Temp Protection
HP — High Pressure Switch
HPWS — High Pressure Water Switch
HWG — Hot Water Generator
JW1 — Jumper Wire for Alarm
LED — Light Emitting Diode
LOC — Loss of Charge Pressure Switch
L-WTR — Load Water
Relay/Contactor Coil
Solenoid Coil
Thermistor
Ground
Indicator Light
G=Green, R=Red
(Comp On) (Alarm Light)
See notes on page 10.
