Advertisement
Cold Start Boiler Application - Priority Figure 3b.
Opera�on:
When any thermostat calls for
heat, appropriate circulator is energized and
the isolated end switch (X‐X) will start the
boiler.
Priority Opera�on:
switched to the priority se�ng and is ac�vat‐
ed, all other zones will stop opera�on un�l
zone 6 is sa�sed. When Zone 6 is not
switched to priority, all zones will operate
independently.
When Zone 6 is
Jumper Placement:
be placed between terminals ZC and ZR. Con‐
nect the isolated end switch to the aquastat
on the boiler
Power input:
Connect 120 volt as power
input to terminals N and H. Neutral wire to
terminal N. Hot wire to terminal H.
14
The jumper should
Advertisement
