5. Product Specifications
Product specification includes a one piece wall mounted
temperature sensor and controller design; two piece designs
are not acceptable for controlling a room temperature.
Following specifications are subject to change without notice.
D11
9-24-14
FAN COIL UNIT CONTROLS
Fig. 3 EPIC Control Sequence Example: VAV Modulating
Cooling and Modulating Heating (4-pipe and 2-pipe hydronic
operation)
MAX.
HEATING
MAX.
COOLING
MIN.
DEAD BAND
2°F
-2 °F +2 °FHEATING
SETPOINT
COOLING
SETPOINT
100
80
60
40
20
0
90 °F DISCHARGE TEMP.
52
°F DISCHARGE TEMP.
ROOM TEMPERATURE INCREASE
CHILLED WATER FLOW
AIRFLOW (% OF TOTAL CAPACITY)
HOT WATER FLOW
Fig. 4 EPIC Control Sequence Example: VAV Modulating
Cooling/Modulating Heating w/Aux Staged Electric Heat
MAX.
HEATING
MIN.
DEAD BAND
2
˚
F
-2 °F HEATING
SETPOINT
100
80
60
40
20
0
90 °F DISCHARGE TEMP.
ROOM TEMPERATURE DECREASE
AIRFLOW (% OF TOTAL CAPACITY)
HOT WATER FLOW
MAX.
HEATING
MAX.
COOLING
MIN.
DEAD BAND
2
°F
-2
°F
1.7
°F
0.7
°F
+2
˚
FHEATING
SETPOINT
COOLING
SETPOINT
100
80
60
40
20
0
STAGE 2 HEAT/FAN
STAGE 1 HEAT/FAN
52
°F DISCHARGE TEMP.
ROOM TEMPERATURE INCREASE
CHILLED WATER FLOW
AIRFLOW (% OF TOTAL CAPACITY)
HEATING MODE
COOLING MODE
Fig. 5 Unit dimensions
3 1/2" (89) 1 1/8" (29)
5 1/8"
(130)
This device complies with part 15 of the FCC Rules. Operation
is subject to the following two conditions:
1. This device may not cause harmful interference
2. This device must accept any interference received,
including interference that may cause undesired operation.
Design
Indoor use only
Material
White flame-retardant plastic
Weight
Approx. 6 oz. (170 grams)
Supply Voltage
24 VAC (-15%, +20%), 50 – 60 Hz, 12 VA,
nonsupervised (all circuits, including supply voltage,
are power limited circuits)
Wiring
Class 2 only
Inputs
0–12 volts DC with internal 10 k
pull-up resistors
Relay Outputs
SPST, 24 volts, 1 amp AC or DC
Maximum for all relay outputs is 3 amps
Analog Outputs
Short protected 10 mA 0 – 12 VDC
Environmental
Limits
Operating 32 to 140 °F (0 to 49 °C)
Shipping - 40 to 160 °F (- 40 to 71 °C)
Humidity 0 to 95% RH, noncondensing
Regulatory
UL 916 Energy Management Equipment
FCC Class A, Part 15, Subpart B and complies with
Canadian ICES-003 Class A
Direct Digital Controls (con’t)
The following are examples of two Engineered Comfort control
sequences:
FanCoilUnits-New_FanCoilUnits 9/29/14 9:06 AM Page D11
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