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SlimFit
®
Series 2
Field wiring
(see Figure 52 & Figure 53)
J. 0 –10 VDC Remote TARGET input –
Terminal Block P15 #5 & #6
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 manually in the PRIORITY SETTINGS menu for the
desired PRIORITY.
a. Many options are available for configuring the control. The fol-
lowing 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 settings 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 high-
est target temperature. Set SUPPLY MAX at this temperature.
•
Set VOLTS FOR MIN at the voltage that will call for the low-
est 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.
Part number 550-100-561/0224
commercial condensing gas
-
— Boiler Manual
fired water boiler
(continued)
OPTIONAL
See Figure 52, page 48 for details
57
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