Performance Curves - Re-Verber-Ray MP-25-80N Insert Manual

MP Series
Running Circuit:
After ignition, the flame rod continuously monitors the flame presence. If sense of flame is lost for a time
of 1.0 seconds or greater, the TP-351A closes the gas valve circuit and a new trial for ignition sequence is
initiated.
Modulating Circuit:
Pre-heat – During the ignition sequence, the TP-3250 operates the blower and gas valve at 100% operation
to optimize ignition. Once ignition is established, the heater will enter a pre-heat cycle for 90 seconds,
operating the blower motor and gas valve at 100%. However, if the heater has cycled in the previous 5
minutes, the controller will skip the pre-heat cycle, and go straight to modulating operation.
The blower motor and modulating coil on the gas valve are energized directly from the TP-3250
modulating controller. The controller utilizes PID logic to match the selected performance curve to the
heater's operation. Based on the determined system configuration, the control will operate as needed to
match the desired system performance.

Performance Curves

The MP Series is programmed to operate on several different performance curves. These curves are to
allow the user to select the desired operation that best accommodates their specific needs. The
performance curves can be selected either by the Premium User Interface (TP-PUI) or by setting the DIP
switches located under the control cover (Pages 14-15). The three modes are as follows:
• Economy Mode: Unit operates to maximize thermal efficiency.
• Comfort Mode: Unit operates to maximize perceived human comfort.
• Standard Mode: Unit operates as a balance between comfort and economy mode.
Economy Mode: Economy Mode is intended to maximize thermal efficiency. It is designed to provide a
system that is more thermally efficient than the other modes due to quicker dissipation of heat. This
mode is recommended for applications such as:
• Aircraft hangars
• Car washes
• Unpopulated warehouses
Comfort Mode: Comfort Mode is designed to minimize temperature differentials across the length of
the heater. It is intended to provide a system that has a greater perceived comfort than the other modes
because of the reduction of extreme temperature zones. This mode is recommended for applications
such as:
• Patios
• Loading docks
• Break areas and lunch rooms
• Kennels
Standard Mode: Standard Mode is a balance between Comfort Mode and Economy Mode. It is
intended to provide a system that is moderately thermal efficient while still minimizing the greater
temperature differentials associated with economy mode. This mode is recommended for applications
such as:
• Populated warehouse heating
• Service garages
• Fire Stations
• Manufacturing
• Auto showrooms
3.0 Operation • Sequence of Operation • Performance Curves
• Pole barns
• Foundries
• Parts counters and service desks
• Golf driving ranges
• Woodworking shops
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