Install Instructions

23
C. GENERAL NOTES
• Household water usage patterns will affect water
temperature at any faucet or shower. Occasionally
check temperature at each point of use, then adjust
thermostat accordingly. Always recheck temperature
after adjusting thermostat.
• When hot water is used in repeated small quantities, a
“stacking” effect can develop in the water heater. The
upper layer of water in tank can be hotter than lower
layer.
• Lowering the thermostat setting or installing automatic
mixing valves as indicated in these instructions will
reduce water temperature levels. Consult your installer
or service technician.
D. ADJUSTING THE WATER HEATER
THERMOSTAT
Water heater thermostat is factory set to its lowest
temperature.This may or may not be suitable for your
needs.
Turn thermostat knob clockwise  to increase water
temperature.
Turn thermostat knob counter-clockwise  to
decrease water temperature.
• Measure water temperature at a hot water faucet
immediately after first heating cycle. Further
temperature adjustment may be necessary as water
heating system is used. Recheck water temperature at
faucet after adjustment.
• When adjusting thermostat, be sure boiler limit control
is set a minimum of 20ºF higher.
WATER HEATER START-UP
At no time should boiler limit control be set above
210°F. This can cause severe personal injury, death or
substantial property damage if ignored.
WARNING
Studies have indicated that dangerous bacteria,
including legionella, pneumophila, can form in the
potable water distribution system if certain minimum
water temperatures are not maintained. Contact your
local health department for more information.
WARNING
Figure 6.2: Peerless
®
Partner
®
Knob
DANGER
HOT WATER CAN SCALD!
– Install an automatic mixing valve at water heater or
at each hot water faucet, bath and shower outlet.
Selection and installation must comply with valve
manufacturer’s recommendation and instructions.
– Use the lowest practical temperature setting.
– Measure water temperature at hot water faucet after
any adjustment. You must follow “Adjusting the
Water Heater Thermostat” procedures.