LAARS Stor - Installation, Operation and Maintenance Instructions - Manual (Page 27)

27
Electrical Connections continued-
SYSTEM START-UP
Follow boiler installation instructions to place boiler in operation.
SEQUENCE OF OPERATIONS
1. Aquastat senses stored water temperature drops below desired
setting.
a. Domestic hot water priority only: Normally closed contacts open
to interrupt space heating.
2. Aquastat satisfied.
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.
WATER TEMPERATURE ADJUSTMENT
1. The aquastat controls the maximum water temperature in the tank.
The differential is variable 5 to 30°F with a 160°F maximum
setting, set at the factory to a 5°F differential and 120°F
temperature.
WARNING
SCALDING
This water heater can deliver scalding temperature water at any
faucet in the system. Be careful whenever using hot water to avoid
scalding injury. By setting the aquastat on this water heater to
obtain an increased water temperature, you may create the potential
for scald injury. To protect against injury, you should install an
ASSE approved mixing valve (a device to limit the temperature of
water to protect against scald injury via mixing hot and cold water
supply) in the water system. This valve will reduce point of
discharge temperature in branch supply lines. Such valves are
available from the manufacturer of this water heater or a local
plumbing supplier. Please consult with a plumbing professional.