Installation Instructions
Owner's Guide
Page
46
Normal Operation
-FLOW-
-FREEZE PROTECTION SYSTEM-
• The ow rate through the micro-boiler is limited to a maximum of 7.0 GPM (26.5 L/min.).
• The temperature setting, along with the return temperature of the water in the system will
determine the ow rate output of the micro-boiler.
This will keep your micro-boiler from freezing and being damaged.
• This micro-boiler comes equipped with heating blocks to protect it against damage associated with
freezing.
• For this freeze protection system to operate, there has to be electrical power to the micro-boiler.
Damage to the heat exchanger caused by freezing temperatures due to power loss is not covered
under the warranty. In cases where power losses can occur, consider the use of a backup power
supply.
• The freeze protection system will activate when the freeze protection thermostat senses
temperatures at 36.5° F (2.5° C) or lower.
• It is the installer's responsibility to be aware of freezing issues and take all preventative measures.
The manufacturer will not be responsible for any damage to the heat exchanger as a result of
freezing.
• In any area subject to freezing temperatures, freezing issues can occur if cold air enters through
the venting into the heat exchanger by either negative pressures within the installation location
or by strong wind. The manufacturer highly recommends the use of a backow preventer (sold
separately) to minimize the amount of cold air entering through the exhaust venting when the
micro-boiler is off.
• If you will not be using your boiler for a long period of time:
1. Completely drain the water out of the micro-boiler. Refer to "-UNIT DRAINING-" on page 47.
2. Disconnect power to your boiler.
Only pipes within the micro-boiler are protected by the freeze protection
system. Any water pipes (hot or cold) located outside the micro-boiler will not
be protected. Properly protect and insulate these pipes from freezing.
CAUTION