Laars Pennant PNCP 500, Инструкция по установке и эксплуатации

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LAARS Heating Systems
Page 14
5.3.2 Programming Control Parameters
There are four (4) control parameters that may be
set. They are the Pool Loop Temperature (LSP), the
Pool Loop Temperature Differential (dLS), the Boiler
Temperature (bsp) and the Pump Off Delay (Pd).
The pool loop temperature (desired pool temp-
erature) is set by changing the LSP parameter. After
scrolling through the parameters until LSP is displayed,
press the enter button. The setpoint will be displayed.
Press the up arrow or down arrow buttons until the
desired setpoint is displayed. Press the enter button and
the setpoint will be activated. The display will return to
indicating the present pool loop temperature.
In addition to the ability to set the pool loop
temperature, the differential associated with that
setting may also be adjusted. The differential is set by
changing the dLS parameter. After scrolling through
the parameters until dLS is displayed, press the enter
button. The setpoint will be displayed. Press the up
arrow or down arrow buttons until the desired setpoint
is displayed. Press the enter button and the setpoint
will be activated. The display will return to indicating
the present pool loop temperature.
The boiler operating temperature is set by
changing the bsp parameter. After scrolling through
the parameters until bsp is displayed, press the enter
button. The setpoint will be displayed. Press the up
arrow or down arrow buttons until the desired setpoint
is displayed. Press the enter button and the setpoint
will be activated. The display will then return to
indicating the pool loop temperature.
The last parameter that may be adjusted is Pd, the
pump off delay. After again scrolling through the
parameters until Pd is displayed, press the enter button.
The pump delay time will be displayed. The pump off
delay may be set between 0.1 and 10 minutes. Press the
up arrow or down arrow buttons until the desired setpoint
is displayed. Press the enter button and the setpoint will
be activated. The display will again return to indicating
the present pool loop temperature.
By depressing the upper left hand button at any
time during the programming, the menu may be
returned to the beginning.
5.3.3 Setpoint - LSP
The setpoint is the desired temperature around
which the heater will control (desired pool temp-
erature). It is adjustable between 60° F and 104° F.
5.3.4 Differential - dLS
The differential (dLS) is the number of degrees
between the temperature at which the heater turns off
and the temperature at which the heater restarts. It is
adjustable from 1° F to 10° F.
5.3.5 Pump Operation
The pump energizes when there is a heat demand.
5.3.6 Heater Purge (Pump Delay) - Pd
After a demand is satisfied, the pump will
continue to run for a preset length of time. That length
of time is adjustable from 0.1 to 10 minutes and is
programmed by the parameter Pd.
Caution
Should overheating occur or the gas supply fail to
shut off, turn off the manual gas control valve to the
appliance.
5.4 Limit Controls
In addition to the pool heater temperature
control, Pennant appliances are fitted with a Pool
Loop high limit set at 135° F and an automatic reset
heater high limit with a maximum setting of 190° F.
The Pool Loop high-limit sensing bulb is to be
installed in the sensor well (supplied), downstream of
the heater (see Figure 6). If sufficient capillary length
exists to reach the sensor location, the control may
remain in its location near the rear of the cabinet on
the right side, behind the slide out drawer (see Figure
9). If the sensor location is farther from the heater than
the capillary will reach to, then the control should be
moved to the remote location and the wires extended to
the new location of the control. If the controller needs to
be moved, and it is being moved to an outdoor location,
the control will need to be put in a weather-tight
enclosure to protect it from rain, snow, etc.
The other limit control limits the temperature of
the discharge from the heat exchanger to a maximum
of 190° F. This limit should be set to a minimum of
175° F. To set the limit controls, remove the control
panel cover and pull the control panel out to gain
access. Appliances with reversed heat exchangers have
the limit controls relocated to the left side of the
appliance. The left access door must be removed to
gain access to the limit controls on these appliances.
SECTION 6.
Operating Instructions
6.1 Sequence of Operation
The amber “Ready” light on the front panel
indicates that the control system is energized. Upon a
call for heat from the pool temperature control, the
green “Heat” indicator on the front panel will light.
The green “Pump” indicator on the front panel
will light.
Once the water flow switch makes, and if all of
the safety interlocks are closed, the ignition module(s)
will energize the blower(s) for a 15-second pre-purge,
followed by a 20-second period to allow the ignitor(s)
to heat.
Energizing the blower pressurizes the air box
(which supplies air to the burners) and closes the