Domestic Hot Water (Dhw) - PEERLESS PureFire PF-80 Installation, Operation & Maintenance Manual

BOILER CONTROL: INTERNAL WIRING & OPERATION
Table 8.9: Outdoor Design Temperature (ODT) – U.S. Cities
City State
Mobile AL 29°F
Anchorage AK -18°F
Juneau AK
Flagstaff AZ
Tucson AZ 32°F
Little Rock AR 20°F
Fayetteville AR 12°F
Sacramento CA 32°F
San Diego CA 44°F
San Francisco CA 38°F
Boulder CO
Denver CO
Hartford CT
Waterbury CT
Wilmington DE 14°F
Orlando FL 38°F
Tallahassee FL 30°F
Atlanta GA 22°F
Boise ID 10°F
Idaho Falls ID -6°F
Chicago IL -4°F
Maximum CH Input Limit: The P
allows the installer to limit the maximum input of the
boiler under a CH load if desired. This can be used
when the boiler is sized primarily for a DHW load and
is oversized for the CH load. This can be set between
50% and 100% and the default is 100%.
CH Response Time: This feature allows the installer to
adjust the response time of the boiler. The "I" value is
adjustable from 15 to 100 with 15 providing the
fastest response. The default value is 60. If the boiler
achieves its target very quickly with limited
modulation, increase the "I" value to reduce the
response time. If the boiler modulates very slowly to
its target and has problems keeping up with the load,
reduce the "I" value to increase the response time.
E. DOMESTIC HOT WATER (DHW)
1. DHW Modes:
Table 8.2 provides an overview of the domestic hot
water modes. The following are detailed descriptions
of the operation of these modes:
Mode 0 – No DHW: When this mode is selected, the
control will not respond to either a thermistor signal or
a contact closure at the DHW terminals (#5 & #6).
There is also no output to DHW Pump Terminals.
Mode 1 – DHW Store with Sensor: In this mode, the
P F ® control accepts a temperature input from an
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optional domestic tank sensor (54157). This sensor
provides the DHW water temperature value to the
control. The control targets the user selected DHW
setpoint and modulates the boiler firing rate accordingly.
46
ODT City
-2°C Springfield
-28°C Indianapolis
1°F -17°C Des Moines
4°F -16°C Wichita
0°C Bowling Green
-7°C New Orleans
-11°C Bangor
0°C Portland
7°C Baltimore
3°C Boston
8°F -13°C Springfield
1°F -17°C Detroit
7°F -14°C Marquette
2°F -17°C Minneapolis
-10°C Jackson
3°C St. Louis
-1°C Billings
-6°C Omaha
-12°C Carson City
-21°C Manchester
-20°C Atlantic City
F ® control
URE IRE
State ODT
IL 2°F -17°C Albuquerque
IN 2°F -17°C New York City
IA -5°F -21°C Rochester
KS 7°F -14°C Greensboro
KY 10°F -12°C Fargo
LA 33°F 1°C Columbus
ME -6°F -21°C Tulsa
ME -1°F -18°C Portland
MD 13°F -11°C Philadelphia
MA 9°F -13°C Pittsburgh
MA 0°F -18°C Charleston
MI 6°F -14°C Sioux Falls
MI -8°F -22°C Dallas
MN -12°F -24°C Salt Lake City
MS 25°F -4°C Burlington
MO 6°F -14°C Richmond
MT -10°F -23°C Seattle
NE -4°F -20°C Spokane
NV 9°F -13°C Morgantown
NH -3°F -19°C Green Bay
NJ 13°F -11°C Cheyene
Be sure to use only the tank sensor indicated. Other
sensors will not provide accurate tank temperatures
and may cause severe personal injury due to scalding.
Before selecting Mode 1, connect the DHW sensor to
terminals #5 & #6. Failure to do this will result in a
blinking screen warning as covered in Section 10.D.
Water temperatures over 125°F can instantly cause
severe burns or death from scalding. Children, elderly
and disabled individuals are at the highest risk of
scalding. See instruction manual for the indirect tank
before setting the water heater temperature. Instruct
users to feel the water temperature before bathing or
showering. Anti-scald valves are recommended.
Mode 2 – DHW Store with Thermostat: This is the
default mode for the control. In this mode, the
P F ® control is connected to the DHW tank
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temperature limit. When the limit closes, the control
modulates the boiler firing rate to target a boiler
supply setpoint. This setpoint is a user selected value
with a factory default of 180 °F. The allowable range
for this value is 134°F to 195°F.
The "Store Warm Hold" function will not be functional
if the DHW tank mode is set to 2. This requires a
DHW tank sensor.
City State ODT
NM 16°F
NY 15°F
NY 5°F
NC 18°F
ND -18°F
OH 5°F
OK 13°F
OR 24°F
PA 14°F
PA 5°F
SC 28°F
SD -11°F
TX 22°F
UT 8°F
VT -7°F
VA 17°F
WA 27°F
WA 2°F
WV 8°F
WI -9°F
WY -1°F
WARNING
NOTICE
DANGER
NOTICE
-9°C
-9°C
-15°C
-8°C
-28°C
-15°C
-11°C
-4°C
-10°C
-15°C
-2°C
-24°C
-6°C
-13°C
-22°C
-8°C
-3°C
-17°C
-13°C
-23°C
-18°C