ITR POLAR HD, Installation And Operating Manual

Page: 58 / 80

Section 8, Operating the Heating Module
8-12 The POLAR™HD Heating Module
• The power LED turns ON when the power to the Distribution
Module Zone Control Board is ON.
Zone 1, 2, 3, 4, 5 Thermostat LED’s (Green)
• The Zone # LED turns ON when the thermostat in the zone is
calling for heat.
Domestic Water LED (Green)
• The domestic water LED turns ON when there is a call for
domestic water heat.
Zone 1, 2, 3, 4, 5 Fans, Summer Loop, Heat Loop 1, Heat
Loop 2, Engine Pre-heat Pump Paired LED’s (Red/Green)
• The nine paired LED’s indicates the functionality of the
devices. The green LED will turn ON when the device is
operating normally. The red LED turns ON if a fuse has been
blown.
8.12 Maintenance
Customer Monthly Maintenance: Check the following and
correct as required:
• Coolant hoses and fittings for leaks and integrity.
• Check coolant level in the overflow bottle (3/4 full when
hot). Fill only when the system is COLD and in small
quantities only to prevent overfilling.
• Exhaust fittings, connections, tubes for leaks, and
integrity.
• Exhaust and air-intake checked for no obstructions.
• Fuel lines, fittings for leaks and integrity.
• External fuel filter for clogging.
Annual Service Requirements: Perform the following:
• Prior to operation for the season, a factory service
tune-up of the modular system should be performed
by trained service personnel. Only personnel familiar
with the equipment modules should perform the service