Airmax MaxAir 100e P2, Инструкции по проектированию, установке и обслуживанию

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2. POWER:
24VAC (nominal) supplied by a Class II transformer between terminals "R" (“24VAC LINE”) and "C"
(“24VAC RET”). The
RED “POWER” LED illuminates when the control is powered.
Transformer rating: 20VA minimum
Voltage: 22.5Vac Minimum, 30Vac Maximum
Current: <100ma (All outputs and relays active)
NOTE: SUPPLY 24VAC POWER FROM THE SECONDARY OF AN NEC CLASS-2
TRANSFORMER ONLY.
3. CONTROL SYSTEM INPUTS
a.) 0-10vdc Command — When SW3-1 “TEST” is ON, a 0-10 VDC input to J2 between Vin+
and Vin– produces a variable PWM output of 0% through 100%. The polarity of the input
signal must be observed . See Figs 1 & 2:
Differential Input Voltage: 0 V to 10 VDC represents 0 to 100% PWM
Maximum Input V dc: +10.2 Vdc
Common Mode Voltage: - 0.2 V max negative, +5 V max positive
Signal (differential) Input impedance: >150K Ohm (Vin+ to Vin-)
Common mode impedance: > 150K Ohm to COM
ON/OFF: ON = input VDC > 0.5VDC +/- 0.1V
OFF = input VDC <0.4VDC +/- 0.1V
FIG 2
b.) Switched 24VAC INPUTS (SW3-1 IN "DISCRETE POSITION": (see para. 5.)
G – Fan Only MODE
Y2 & O & G – HIGH COOL MODE
Y1 & O & G – LOW COOL MODE
W1 – 1
st
STAGE HEAT MODE
W2 – 2
nd
STAGE HEAT MODE
Y1 & G & NOT O– Low Stage Heating (with Heat Pump)
Y2 & G & NOT O– High Stage Heating (with Heat Pump)
D – Accessory Control (Dehumidifier, Aquastat, etc). D is connected
to ”R” when shunt H5 is in place. Remove H5 to control the D
terminal by an external switch.