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Heat-Timer Corp.
• When PID is Selected, the following are the settings that directly affects this modes operation:
◦ Reaction Time (See page
SELECT
Settings/System Settings/More Settings/Stage Settings/Reaction Time
◦ Purge Delay (See page
SELECT
Settings/System Settings/More Settings/Stage Settings/Purge Delay
◦ Minimum Run Time (See page
SELECT
Settings/System Settings/More Settings/Stage Settings/Min Runtime
◦ Standby Delay (See page
SELECT
Settings/System Settings/More Settings/Stage Settings/Standby Delay
◦ Last Stage Hold (See page
SELECT
Settings/System Settings/More Settings/Stage Settings/Lst Stage Hold
• The Oversize option sequence stages based on how many Throttling ranges is the system temperature away from the Target
Temperature. At one Throttling range below the Set Point, only one stage will be on. For each additional Throttling range below
the Set Point, an additional stage will be activated. The last stage on will be allowed to exceed the Set Point by one Throttling
range before turning off that stage. This helps to prevent the last stage from short cycling. See OSS Operation on page 5.
• When Oversize (OSS) is Selected, the following are the settings that directly affects this modes operation:
◦ Throttle (See page
SELECT
Settings/System Settings/More Settings/Stage Settings/Throttle
Boiler Type
On/Off, 2-Stage, 3-Stage, or 4-Stage
Default: On/Off
SELECT
Settings/System Startup/.../Boiler Type
• The MPCQ Platinum can control multiple multi-stage boilers.
• The number of stages per boiler multiplied by the number of boilers will give the total
number of stages the MPCQ Platinum will control.
--- BOILER TYPE --
On/Off
2-Stage
3-Stage
4-Stage
--- TOTAL BOILER ---
8
[
]
Total Boiler
Adjustable from 1 to 24 depending on Boiler Type
Default: varies
SELECT
Settings/System Startup/.../Total Boiler
• The MPCQ Platinum can control up to a total of 24 stages using a maximum of two Extension panels. Enter the total number of
boilers to be controlled.
• Make sure that the extension panels are connected (See page
12) and powered before adjusting the Total Boiler value.
On/Off Sequence
(Not Available for on/Off Boilers)
Lo/Hi/Lo/Hi or Lo/Lo/Hi/Hi
Default: Lo/Hi/Lo/Hi
SELECT
Settings/System Startup/.../On-Off Sequence
• The MPCQ Platinum can sequence multi-stage burners by boiler (Lo/Hi/Lo/Hi). In
this option, the MPCQ Platinum will start the first boiler’s lowest stage followed by
the remaining stage for that boiler. Then, do the same for the following boilers.
--ON/OFF SEQUENCE --
Lo/Hi/Lo/Hi
Lo/Lo/Hi/Hi
• If the Lo/Lo/Hi/Hi option was selected, the MPCQ Platinum will start the first boiler’s lowest stage followed by the second boiler’s
lowest stage until all boilers set to Auto mode has all their lowest stages on. When more stages are need, the MPCQ will start the
secondary stages starting with the lead boiler followed by the next and so on. This option is more efficient for many copper tube
and low mass boilers.
Sensor Fault
Stages On or Stages Off
Default: Stages On
SELECT
Settings/System Startup/.../Sensor Fault
• This selection determines the status of the stage relays when either the Outdoor Sensor
or System Sensor is at fault, sensor reading will display either
OPEN
or
SHORT
. In
addition, the Display second line will show
SENSOR FAULT
.
--- SENSOR FAULT ---
Stages On
Stages Off
• When Stages On is selected and a sensor is at fault, the System relay in addition to all the stages relays will energize. This will allow
all the boilers to run on their own limits.
• When Stages Off is selected and a sensor is at fault, all boiler stages relays and system relay will de-energize.
Day Light Saving
Enable or Disable
Default: Enable
SELECT
Settings/System Startup/.../Day Light Saving
• Enable this feature in areas where Day Light Saving is observed to account for the time
changes without having to manually change the time twice a year.
- DAY LIGHT SAVING
Enable
Disable
