Typical Steam Heat Configuration; Initial Program; Selecting The System Features - heat-timer MPC Platinum Installation And Operation Manual

• During a heating cycle, the control switches between the different cycle states. The states are divided into groups.
• During any of the operational states, the control has the output relays energized. And during the energy saving states, the control
has the output relays de-energized.
• An Internet control Cycle Timeline is viewable on the History tab of the ICMS site. They are part of the Stock History.
• State Groups are divided into either Boiler-On or Boiler-Off. The Boiler-On groups are represented by the reddish background.
They are graphed on the upper portion of the Cycle-Timeline Internet history graph. The Boiler-Off groups are graphed on the
bottom portion of the graph and has a bluish background.
• These Internet graphs help troubleshoot and fine tune the control operation.

TYPICAL STEAM HEAT CONFIGURATION

The MPC Platinum works with virtually any non-vacuum steam heated system. The MPC Platinum can control a boiler directly to
create steam. For systems where a central plant provides steam, the MPC Platinum opens or closes a motorized valve to allow or
prevent steam from entering the heating system. The MPC Platinum also works with one or two-pipe steam systems.
However, based upon the specific layout of the steam heating system there are several differences in locating the heating system
sensor and in the output wiring to the boiler or motorized valve that the user need to observe. It is important to carefully check the
piping diagrams at the end of this manual to determine which of the following four layouts matches your heating system:
• One Pipe Steam - Motorized Valve
• Two Pipe Steam - Motorized Valve
• One Pipe Steam - Direct Burner Operation
• Two Pipe Steam - Direct Burner Operation
For subatmospheric vacuum type steam systems, see Heat-Timer SRC Platinum Control on the Heat-Timer web site
(http://www.heat-timer.com).

INITIAL PROGRAM

Setting an Initial Program ease's the configuration of the MPC Platinum while giving the opportunity to utilize many of the energy
saving and comfort features. The program should consist of the following:
• Select the features your system can utilize,
• Make sure you have the right control and accessories,
• Install the Control,
• Set the System Startup,
• Set the System Settings,
• Set the Schedules
• Adjust the Day and Night Heat Adjustments and the Set Point

SELECTING THE SYSTEM FEATURES

Heat-Timer designed the MPC Platinum with low-pressure steam building heating as the primary purpose. With this in mind, the
user can use many of the control features to ease, enhance, and improve the system performance. Below is a list of its major features.
Steam Outdoor Reset
• The MPC Platinum regulates the amount of steam sent to the building based on the outdoor temperature. It uses the Cycle concept
based on the Day and Night Heat Adjustment and outdoor cutoffs to regulate the heat. The colder it gets, the longer the Cycle-On
runs. See "AUTO/BYPASS Switch" on page 16.
Night Setback
• Whenever the outdoor temperature falls below the Outdoor Cutoff, the MPC Platinum adjusts the Cycle-ON and Cycle-OFF ratio
to hold a constant Day or Night heat level. The Night heat level is for when the building is unoccupied or tenants are sleeping.
Day and Night Schedules
• The MPC Platinum has 4 Day and 4 Night settings for each day of the week. By setting a Schedule, Day and Night Heat
Adjustments, and Outdoor Cutoffs, you can save energy while providing comfortable heat to the building. The settings allow
the MPC Platinum to reduce the length of the steam Cycle-ON portion during the night or when building is unoccupied. See
"Schedules" on page 29.
6
MPC Platinum Installation and Operation Manual