Thermostat & Outdoor Curve – A central heating call from a dry contact switch will enable the appliance and the setpoint will vary with the outdoor temperature

Thermostat & Setpoint

for central heating calls.

Constant & Outdoor Curve

Constant & Setpoint

Thermostat & Setpoint - A central heating call from a dry contact switch will enable the appliance and the setpoint will be fixed for central heating calls.

0-10 V Modulation Signal

Constant & Outd. Curve - The appliance will maintain setpoint and the central heating circulators will be constantly enabled without an external call from a dry con-

tact switch. The central heating circulators will be disabled when the outdoor temperature exceeds the Warm Weather Shutdown Temperature setting. The setpoint

will vary with the outdoor temperature for central heating calls.

Constant & Setpoint - The appliance will maintain setpoint and the central heating circulators will be constantly enabled without an external call from a dry contact

switch. The central heating circulators will be disabled when the outdoor temperature exceeds the Warm Weather Shutdown Temperature setting. The setpoint will

be fixed for central heating calls.

0 - 10V Modulation Signal - This option allows the appliance firing rate to be controlled by an external control system. Based on the control input voltage, the

appliance will start to operate for heat demand. The CH temperature is limited by the Absolute maximum temperature (87°C).

•

0 – 2V appliance is off.

2 – 10 V linear power increase from minimum to maximum output.

10 – 2 V linear power decrease from maximum to minimum output.

2 – 1 V appliance on minimum capacity.

1 - 0 V appliance off.

The Installer's Handbook - ACVMax: A1004308 - 660Y2900 - Volume 1 • B

max

min

Voltage