DHW Energy Saver Installation and Configuration Manual
7
HT# 059106-00C
Using the Supply or Return Sensor
Yes, No
Default: No
SELECT
Maintenance/DHW Settings/Supply Settings/Use Sensor
Supply Sensor
SELECT
Maintenance/DHW Settings/Return Settings/Use Sensor
Return Sensor
• By activating the Supply Sensor feature, the Platinum control will utilize Aux Temp 0 input
as the Supply Sensor.
• By activating the Return Sensor feature, the Platinum control will utilize Aux Temp 1 input
as the Return Sensor.
• Any of the two features can be enabled either using the Platinum control menus or the
Platinum control ICMS webpage at (http://www.htcontrols.com).
USE SUPPLY SENSOR
No
Yes
USE RETURN SENSOR
No
Yes
Supply or Return Set Point
Boiler is adjustable from 60°F/16°C to 200F°/93°C
Boiler Default: 140°F/60°C
Pump is adjustable from 60°F/16°C to 200F°/93°C
Pump Default: 120°F/49°C
SELECT
Maintenance/DHW Settings/Supply Settings/Setpoint
Supply Sensor
SELECT
Maintenance/DHW Settings/Return Settings/Setpoint
Return Sensor
• The Supply Set Point determines the maximum temperature at which the boiler/ water
heater relay will de-energize. It is the maximum DHW target temperature the DHW Energy
Saver will try to achieve. The relay will energize whenever the supply temperature drops
below this set point less the differential. See next setting.
• The Return Set Point determines the maximum temperature at which the DHW pump relay
will de-energize. The circulating pump relay will energize whenever the return temperature
drops below this set point less the differential. See next setting.
DHW SUPPLY SETPOINT
140 F
[
]
DHW RETURN SETPOINT
120 F
[
]
Supply or Return Peak and Light Differential
Peak is adjustable from 5F°/3C° to 100F°/56C°
Peak Default: 10F°/6C°
Light is adjustable from 5F°/3C° to 100F°/56C°
Light Default: 20F°/11C°
SELECT
Maintenance/DHW Settings/Supply Settings/Peak Diff or Light Diff
Supply Sensor
SELECT
Maintenance/DHW Settings/Return Settings/Peak Diff or Light Diff
Return Sensor
• Any of the differentials is subtracted from the set point to determine the temperature at
which the boiler/water heater or pump relay will energize.
• The DHW Energy Saver has two independent differentials for each of the supply and return.
The Peak Differential is used to keep a tight control over the DHW temperature during
heavy usage. This differential is used when the DHW Schedule is in the Peak period. Its
value must be less than or equal to the Light Differential for the same sensor.
• The Light Differential is used during the night, low DHW usage, or when a tight control of
the temperature is not required. It allows the boiler or pump relay to turn on for a slightly
longer period. However, due to the reduced usage, the relay will remain off for a much
longer period. This type of differential is used when the DHW Schedule is in the Light
period. Its value must be greater than or equal to the Peak Differential for the same sensor.
DHW SUPPLY PEAK DIFF
20 F
[
]
DHW SUPPLY LIGHT DIFF
40 F
[
]
DHW RETURN PEAK DIFF
20 F
[
]
DHW RETURN LIGHT DIFF
40 F
[
]
