Heating stops when outside
temperature gets warmer
 �Boost� mode that
automatically increases the
temperature when needed
 Works only when triggered
by the thermostat
 Ability to purge the pump
when system is not running
 Adjustable between 50 �F
and 190 �F
 Safety control to limit
excessively high temperatures
 Electrical supply and heat
pump contact (contact only
with commercial boilers)
 Breakers with 33 & 36 kW
residential models
 24 V electrical supply
for thermostat and other
accessories
 30 PSI safety relief valve
 Drain/purge valve