Are other boiler system components delivered with the ZWB 42-3 covered by warranty?

Other components not manufactured by BTC are primarily warranted by their respective manufacturers. However, BTC also warrants these components to be free from defects in workmanship and material for one year from the installation date, provided they are installed and properly maintained by a qualified heating contractor. If a defect exists, BTC will repair or replace them if a defect in workmanship or materials is determined.