Temperature Control System - Hardy H3 Installation And Operating Instructions Manual

Section VII 7-2

Temperature Control System

DAMPER AQUASTAT, P/N H2000.08 - (WARNING: When working with electrical circuits,
use caution to avoid electrical shock) – This thermostat has a probe that is in a well in the
water tank of the wood heater. It has one set of contacts that open on a temperature rise
and close on a temperature fall. This thermostat is normally set at 170'F to 180'F. It
controls the damper solenoid and the forced air draft. If the damper solenoid and forced air
draft will not operate, place a jumper wire across the thermostat terminals. If they operate
when the thermostat is jumpered out, and the temperature of the water in the heater is
below the set point on the thermostat, the thermostat is defective. Do not leave the jumper
on the thermostat because the heater will overheat.
DAMPER SOLENOID, P/N H 2001.00 - (WARNING: When working with electrical circuits,
use caution to avoid electrical shock) – This solenoid lifts the cover off the intake to the
forced air draft blower. The solenoid is controlled by the damper thermostat. It should lift
the cover when the forced air blower comes on and drop the cover after the blower goes
off. If the solenoid does not drop the cover when the blower goes off, the solenoid should
be replaced. The forced air draft intake cover must be in place when the blower is not
running or the heater will overheat and cause excessive wood usage.
FORCED AIR DRAFT BLOWER, P/N H2002.12 - (WARNING: When working with electrical
circuits, use caution to avoid electrical shock) – This blower supplies air to the fire box
when the damper thermostat calls for heat. If the blower wheel or the intake to the blower
is clogged, the blower will not deliver the proper amount of air to the fire. The blower can
be disassembled and cleaned. Be sure to seal the blower motor back to the blower
housing if the blower is disassembled. The motor should be oiled at the beginning of each
heating season. When the heater is not in use, the power cord for the blower should be
unplugged.
HARDY MANUFACTURING CO., INC (MODEL H3, H5, & H6) PAGE 29