Installation / Operation Instruction Manual

25
SECTION VII
OPERATING INSTRUCTIONS
SYSTEM START-UP
Follow boiler installation instructions to place boiler in
operation.
SEQUENCE OF OPERATIONS
1. Aquastat senses stored water temperature below
desired setpoint.
a. Domestic hot water priority only: Normally closed
contacts open to interrupt space heating.
b. Normally open contact closes, energizing the
domestic hot water circulator.
2. Aquastat senses stored water temperature at desired
setpoint.
a. Aquastat contacts open, turning off domestic hot
water circulator and de-energizing relay.
b. Normally open contacts open, stopping boiler
operation.
c. Domestic hot water priority only: Normally closed
contacts close, returning boiler control to space
heating.
WARNING
Water heaters are heat-producing appliances. To avoid damage
or injury there must be no materials stored against the water
heater, and proper care must be taken to avoid unnecessary
contact (especially by children) with the water heater.
UNDER NO CIRCUMSTANCES SHALL FLAMMABLE
MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE
USED OR STORED IN THE VICINITY OF THE WATER
HEATER OR IN ANY LOCATION FROM WHICH FUMES
COULD REACH THE WATER HEATER.
Installation or service of this water heater requires ability
equivalent to that of a licensed tradesman in the field
involved. Plumbing and electrical work are required.