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®
SlimFit
Series 3
Field wiring
J. 0 –10 VDC Remote TARGET input –
1. See illustration at right and Figure 52, page 60 (wiring diagram) for details.
2. Remote target using 0–10VDC input requires a 0–10VDC input signal at
P15-4/5 as shown at right.
a. The input positive connection must be at P15 terminal 6 and the common
connection at terminal 5.
3. This illustration also shows how to connect TT or end switch contacts at
INPUT 1, INPUT 2 and INPUT 3.
a. If a Heat/DHW demand is required, connect the demand's dry contact
to an unused input on the control and its pump/valve to the respective
output. Then assign and setup a priority to the input using the Wizard
or manually through the contractor menu.
b. A dry contact heat demand must be applied to one of the inputs in order
to initiate a call for heat.
4. The 0–10VDC signal is used to adjust the supply target temperature, using
the TARGET ADJUST setting. Set TARGET ADJUST during the WIZARD
or manually in the PRIORITY SETTINGS menu for the desired PRIORITY.
a. Many options are available for configuring the control. The following is
a suggested setup that uses factory default settings as much as possible.
b. Use PRIORITY 1 for the DHW heating system when used. This priority's
default values are set for DHW, direct-piped to the boiler. Verify that set-
tings are suitable for the application, change if needed.
c. Use PRIORITY 2 for the heating systems.
For single boilers, the factory default settings for PRIORITY 2
make this priority a good choice for space heating applications.
Set PRIORITY 2 values to the following:
Set TARGET ADJUST value to 0–10V.
Set VOLTS FOR MAX at the voltage that will call for the highest target
temperature. Set SUPPLY MAX at this temperature.
Set VOLTS FOR MIN at the voltage that will call for the lowest target
temperature. Set SUPPLY MIN at this temperature.
For voltages between VOLTS FOR MAX and VOLTS FOR MIN, the
target temperature will range proportionately between SUPPLY
MAX and SUPPLY MIN. See the SlimFit Advanced Manual for a full
discussion.
NOTE: The 0–10VDC signal replaces the ODT sensor as the target temperature
modifier (TARGET ADJUST setting). The control does not control
target.
56
COMMERCIAL CONDENSING GAS
(SlimFit control module, left side)
-
FIRED WATER BOILER
(continued)
OPTIONAL
See Figure 52, page 60 for details
—
Boiler Manual
Part number 550-100-168/0516
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