Instinct Installation Manual

69
FACTORY DEFAULT
HEATING SETTING
INSTINCT
Solo
INSTINCT
Combi
MINIMUM
SETTING
MAXIMUM
EZ SETUP RESET INSTALLER RESET
SETTING
CHAPTER 13 - EXTERNAL MODULATING CONTROL
The INSTINCT can directly accept an analog 0-
10 VDC signal from an external modulating boiler
controller to control the firing rate.
13.1. Wiring the Modulating Controller
Run two 18 gauge wires from the external modulating
boiler controller’s 0-10 VDC boiler output to low voltage
terminals X5-1&2 located at the bottom of the CTRL-
Max control module, as shown in Fig. 25 on page 41.
This signal will both enable and modulate the boiler. No
wiring is required at the thermostat terminals.
External modulating control will only function if the
external modulating controller is properly wired to the
INSTINCT as follows:
• X5-1 = +
• X5-2 = -
13.2. CTRLMax Programming
The CTRLMax control module must be programmed to
accept the 0-10 VDC signal from the external modulat-
ing boiler control.
1. Use the Heating EZ Setup function to set
CH D emand t o 0-10V M odulation Sig nal . R efer ence
Section 9.7 on page 48.
13.3. Programming of External Modulating
Control
The external modulating control must be programmed
to send 2 VDC to enable the boiler and run it at low fire,
and 10 VDC to run the boiler at high fire. Once the con-
trol enables the boiler, it must wait 30 seconds to allow
the burner to stabilize before modulating the boiler.
NOTICE
Ensure that the polarity of the connections
from the external modulating boiler controller
to the boiler are correct. Reversed polarity will
lead to no response from the boiler.
CTRLMax Factory Settings
Heating Operation Enabled Enabled ✓
Demand Type
Thermostat &
Out d . C ur v e
Thermostat &
Out d . C ur v e
✓ ✓
Absolute Max CH Setpoint 185°F [85°C] 185°F [85°C] 68°F [20°C] 188°F [87°C]
✓
CH1 Maximum Setpoint 180°F [82°C] 180°F [82°C] 68°F [20°C] 188°F [87°C]
✓ ✓
CH1 Minimum Setpoint 80°F [27°C] 80°F [27°C] 60°F [15°C] 188°F [87°C]
✓ ✓
Outdoor Curve Coldest Day 10°F [-12°C] 10°F [-12°C] -30°F [-34°C] 50°F [10°C]
✓
Outdoor Curve Warmest Day 64°F [18°C] 64°F [18°C] 60°F [15°C] 78°F [25°C]
✓
CH2 Circuit Enabled Enabled
✓
CH2 Maximum Setpoint 140°F [60°C] 140°F [60°C] 68°F [20°C] 194°F [90°C]
✓ ✓
CH2 Minimum Setpoint 80°F [27°C] 80°F [27°C] 60°F [15°C] 190°F [88°C]
✓ ✓
Warm Weather Shutdown Off Off Off 78°F [25°C]
✓ ✓
Circulation Pump Permanent Disabled Disabled
✓
CH Post Pump Time 5 Minutes 5 Minutes Off 20 Minutes
✓
Freeze Protection Enabled Enabled
✓
Frost Protection Setpoint -22°F [-30°C] -22°F [-30°C] -22°F [-30°C] 50°F [10°C]
✓
Parallel Shift Value 0°F [0°C] 0°F [0°C] 0°F [0°C] 144°F [80°C]
✓
CH Call Blocking 2 Minutes 2 Minutes 0 Minute 30 Minutes
✓
CHAPTER 13