PeerlessBoilers PF-110, Installation, Operation & Maintenance Manual

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3. Pump Modes:
The P
URE
F
IRE
boiler allows four different pump modes
to give the installer flexibility in piping arrangements.
4. Special Features:
The P
URE
F
IRE
control offers several special features to
give the installer options in setting up the boiler. These
options are shown in the following table.
30
BOILER CONTROL: INTERNAL WIRING & OPERATION
Table 8.3: Pump Modes
Table 8.4: Control Features
Pump
Mode
Display Text Brief Description
Detail
Section
Page
0 DHW or CH & DHW pump
The General pump is on when the CH pump runs on CH demand.
The DHW pump runs on DHW demand. Either the CH or DHW pump
runs; they never run at the same time.
8.C.1 33
1 General pump with 3-way valve
The General pump is always on when burner is on. A line voltage
(120 VAC) 3-way valve is operated to supply water to the DHW tank.
8.C.1 34
2 Manifold with pump for DHW
The General pump is always on when the burner is on. The CH
pump runs on CH demand. The DHW pump runs on DHW Demand.
Either the CH or DHW pump runs; they never run at the same time.
8.C.1 34
3 Manifold with 3-way valve for DHW This mode is not available at this time. 8.C.1 N/A
Feature Brief Description
Detail
Section
Page
Freeze Protection
Activates pumps if temperatures fall below the specified value. If the temperatures
continue to fall, the boiler is activated.
8.C.3 35
DHW Tank Warm Hold
Prevents boiler from ramping up to high power if the DHW demand is only to keep
the tank warm. This feature is only available if the optional tank sensor is used.
8.E.3 39
Additional Safety Functions
Allows the installer to choose between a low water cutoff and a flow switch for
water level safety shutdown. The default setting is “Low Water Cutoff” and a
factory installed jumper is supplied with the boiler. This jumper should be
replaced with a low water cutoff in jurisdictions where it is required.
8.C.4 35
Vent Temperature Safety
Limit
Reduces the firing rate if the vent temperature approaches the maximum limit of
the vent material. If the vent temperature continues to climb, the
P
URE
F
IRE
control
will shut down the boiler.
8.C.2 35
Outdoor Reset
The P
URE
F
IRE
control changes the boiler supply target temperature to compensate
for changes in load due to milder outdoor temperatures. This increases the
efficiency of the boiler and is more comfortable.
8.D.3 36
Temperature Boost
The temperature boost function increases the boiler supply target to recover more
quickly from setback conditions.
8.D.3 37
Warm Weather Shutdown
The P
URE
F
IRE
control will shut down the boiler’s CH functions if the outdoor
temperature is above an installer defined maximum. This prevents the boiler
from running during warm weather.
8.D.4 38
Anti-Cycling
The anti-cycling function prevents rapid on/off cycling of the boiler. This includes
an override function to be sure that all loads are satisfied.
8.D.4 37
Limited DHW Priority
The P
URE
F
IRE
control provides DHW priority for boiler operation. However, the
control will automatically switch between CH and DHW loads after an installer
determined switch time.
8.E.2 39
DHW Heat Dump
If enabled, the DHW heat dump function serves to dump heat from the boiler
system to the DHW tank after a CH demand has ended.
8.E.4 39
Service Notification
If enabled, the P
URE
F
IRE
control will display a service notification after an installer
defined number of hours or cycles. It can also display a notification based on a
date of the installers choosing.
8.F
39
System Test
The P
URE
F
IRE
boiler will allow the installer to operate the boiler at low power,
high power or ignition input for testing and analysis.
8.G 40
Fault History
The P
URE
F
IRE
control allows service personnel to access the last 15 Blocking
Errors and the last 15 Lockout Errors in addition to records of the interval
between Errors.
8.H 40