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Part number 550-100-180/0917
57
J. 0 –10 VDC Remote TARGET input –
OPTIONAL
4ERMINAL"LOCK0
1. See illustration at right and Figure 52, page 48 (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 manu-
ally in the PRIORITY SETTINGS menu for the desired PRIORITY.
a. Many options are available for configuring the control. The following is a sug-
gested 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 settings
are suitable for the application, change if needed.
c. Use PRIORITY 2 for the heating systems.
r
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:
r
Set TARGET ADJUST value to 0–10V.
r
Set VOLTS FOR MAX at the voltage that will call for the highest target
temperature. Set SUPPLY MAX at this temperature.
r
Set VOLTS FOR MIN at the voltage that will call for the lowest target
temperature. Set SUPPLY MIN at this temperature.
r
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.
See Figure 52, page 48 for details
SlimFit
®
Series 2
COMMERCIAL
CONDENSING
GAS
-
FIRED
WATER
BOILER
—
Boiler Manual
Field wiring
(see
&IGURE&IGURE
(continued)