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16
Heat-Timer Corp.
Setting the Control
Default Display and Changing Settings
The MPCQ Platinum is equipped with an 80 character (20 character per
row x 4 rows) digital display. The Display's default screen is divided into
4 rows of text as per the diagram.
The following is a list of the buttons and knobs and their functionality:
SELECT/ADJUST Is a turning knob and a push button. When turned in
the default screen will scroll through all the boilers.
When pushed will enter the Settings menu. In
menus, it scrolls through the available options when
dialed. When clicked, it accepts the selected value.
BACK
When in the default screen, pushing it will display
the date, time, Space Average, and the Auxiliary
input status. When in any menu, pushing it will go
back to the parent menu.
NEXT
In the default screen, it scrolls forward through the
boilers. In Boiler Menu, goes to the next setting. In
Schedules, goes to next schedule time for that day.
BOILER (DAY)
When in the default screen, will display the Boiler Menu. In the Boiler menu, switches between boilers. In
Schedules, switches between different weekdays.
PREV. (DEL)
In the default screen, it scrolls backward through the boilers' status. In Schedules, it clears a specific schedule
setting. In the Boiler Menu, will display the previous boiler settings.
HELP
When clicked on a specific menu item will provide help instructions.
When powering up the MPCQ Platinum for the first time, it will take you through an 70 second count down followed by the System
Startup Settings then another 10 second boot setup and finally end with the default system screen. Once the control is mounted and
wired, set up an initial pilot program.
• Set and adjust System Startup Settings (page 17)
• Set and adjust System Settings (page 20)
• Set and adjust Stage Settings (page 23)
• Set and adjust Maintenance (page 29)
• Set and adjust Schedules (page 26)
Display Messages
The MPCQ Platinum normal display layout reserved the second line for message indications. The following is a list of the most
common Message Display Line information:
• Est Pres at 10 psi
• Cycle On: 1/5 min
• Cycle Off: 6/60 min
• Fast C/D: 68°F
• Pres L/O: 2 psi
• Space L/O: 71°F
• Vari Boost Active
• Manual Boost 29 min
• Summer
• No Call For Heat
The MPCQ Platinum is set to Cycle Operation Mode and is energizing stages to establish heat prior
to starting a heating cycle. See Cycle Operation Concept on page 4.
The MPCQ Platinum is in the Cycle-On period for a minute out of a total Cycle-On of 5 minutes.
See Cycle Operation Concept on page 4.
The MPCQ Platinum is in the Cycle-Off period. Only 6 minutes has elapsed from the total cycle of
60 minutes. See Cycle Operation Concept on page 4.
The Boost option is Vari+ESD. The MPCQ Platinum is turning off stages at the end of the last
Day schedule setting for the Fast Cool Down until the space average temperature drops below 68°F
(Night Space Target). See Fast Cool Down on page 22.
In Cycle Operation Mode the MPCQ Platinum is in Pressure Lockout until the pressure drops to 2
psi. See Heat Establish Pressure on page 29.
In Cycle Operation Mode the MPCQ Platinum is in Space Lockout until the space average drops
below 71°F. See Space Lock on page 32.
The MPCQ Platinum has started a Vari Boost in a Cycle Operation Mode. See Boost on page 22.
The MPCQ Platinum has started a Manual Boost in a Cycle Operation Mode. Only 29 minutes are
left to terminate the Manual Boost. See Boost on page 22.
The control is set to Summer. No heat is active. See Season on page 20.
The Outdoor temperature is above the Outdoor Cutoff. See Day/Night Cutoff on page 21.
Digital display shows the date, heating
status, and cutoff, outdoor, and system
values. To view and adjust settings,
press the Adjust/Select button.
Sensor Status
o
OD= 31
F
Messages
Cycle On: 2/15min
Boilers
<AB>
CD
Boiler Status
HIGH
HIGH
HELP
PREV.
(DEL)
Depress the knob to move
forward through the menus and to
accept changes. To change a
setting's value, rotate the knob.
ADJUST
SYS= 12psi
PRESS TO
EF
GH
SELECT
LOW
---
BACK
BOILER
NEXT
(DAY)
Depress the button to go back
through the menus, or to view a
setting value without changing it
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