User Guide

© 2018 tekmar 301P
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D - 02/18
5 of 8
L
120VAC Power
RELAY I EXERCISING
RELAY I POST PURGE
PUMP 1
N L N
TT
Away C R Rh W
Boiler A
X X
C R W
T-STAT
tN4
Legend
B1 = Boiler
P1 = Pump Zone
T1 = Thermostat
Legend
B1 = Boiler
P1 = Pump Zone
T1 = Thermostat
B1
B1
P1
P1
NLG
115 Vac
T1
T1
301P
Mechanical
Electrical
The Switching Relay 301P operates a circulator when the thermostat calls for heat.
The boiler is fired whenever a zone calls for heat.