SPYDER® BACNET® PROGRAMMABLE CONTROLLERS
63-1328—05 2
DESCRIPTION
The programmable VAV/Unitary controllers are available in three models, as described in Table 1.
a
One Universal Input (UI-1*) is user selectable as a fast digital pulse meter
Each controller is programmable because the user chooses 
which function blocks to use and how to connect them. It is 
configurable because each Function Block has user-defined 
behavior.
The PVB6436AS and PVB6438NS models are Variable Air 
Volume (VAV) controllers, and the PUB6438S and 
PUB6438SR models are Unitary controllers. 
VAV Equipment Control 
(PVB0000AS, PVB4022AS, 
PVB4024NS, PVB6436AS, and 
PVB6438NS)
The VAV controllers provide pressure-independent air flow 
control and pressure-dependent damper control. VAV systems 
generally provide cool air only to zones. However, each 
controller has additional programmable inputs and outputs 
that may be used to control devices, such as a fan or VAV box 
reheat coils. Heaters can be staged electric or modulating hot 
water. Supply and exhaust pressurization control are provided 
on a zone basis.
Unitary Equipment Control 
(PUB1012S, PUB4024S, PUB6438S, 
and PUB6438SR)
Unitary equipment includes natural convection units, radiant 
panels, unit heaters, unit ventilators, fan coil units, and heat 
pumps. Unitary equipment does not require a central fan. 
Depending on design, unitary equipment may perform one or 
all of the functions of HVAC—ventilation, filtration, heating, 
cooling, humidification and distribution. Unitary equipment 
frequently requires a distribution system for steam or hot and 
or chilled water.
SPECIFICATIONS
Electrical
Rated Voltage: 20-30 Vac; 50/60 Hz
Power Consumption: 
100 VA for controller and all connected loads (including the 
actuator on model PVB6436AS)
Controller only Load: 5 VA maximum; models PVB6438NS, 
PUB6438S, and PUB6438SR
Controller and Actuator Load: 9 VA maximum; model 
PVB6436AS
External Sensors Power Output: 20 Vdc ±10% @ 75 mA 
maximum
Environmental
VAV Operating & Storage Temperature Ambient Rating 
(models PVB0000AS, PVB4022AS, PVB4024NS, 
PVB6436AS, and PVB6438NS):
Minimum 32° F (0° C); Maximum 122° F (50° C)
Unitary Operating & Storage Temperature Ambient Rating 
(models PUB1012S, PUB4024S, PUB6438S, and 
PUB6438SR):
Minimum -40° F (-40° C); Maximum 150° F (65.5° C)
Relative Humidity: 5% to 95% non-condensing
Dimensions (H/W/D)
See Fig. 1 to Fig. 4 beginning on page 6 for dimensioned 
drawings.
PUB1012S, PUB4024S, and PVB4024NS:6.25 x 4.81 x 2.26 
in. (15.92 x 12.20 x 5.74 cm)
PUB0000AS, PUB4022AS (including Actuator):6.60 x 8.28 
x 2.26 in. (16.70 x 21.10 x 5.74 cm)
PVB6436AS (including Actuator): 6.27 x 10.316 x 2.26 in. 
(15.92 x 26.20 x 5.74 cm)
PVB6438NS: 5.76 x 6.85 x 2.26 in. (14.62 x 17.40 x 5.74 cm)
Table 1. Controller Configurations.
Controller 
Model
Programmable 
Type
UI 
(Universal 
Input)
DI 
(Digital 
Input)
AO 
(Analog 
Output)
DO 
(Digital 
Output)
Velocity Pressure 
Sensor (Microbridge)
Series 60 Floating 
Actuator
PUB1012S Unitary
1
a
01 2 NO NO
PUB4024S Unitary
4
a
02 4 NO NO
PUB6438S Unitary 6 4 3 8 NO NO
PUB6438SR Unitary 6 4 3 8 Relays NO NO
PVB0000AS VAV 0 0 0 0 YES YES
PVB4022AS VAV
4
a
0 2 2 YES YES
PVB4024NS VAV
4
a
0 2 4 YES NO
PVB6436AS VAV 6 4 3 6 YES YES
PVB6438NS VAV 6 4 3 8 YES NO