WattMaster MG331-21-VAVCAV User Manual

MG331-21-VAVCAV

r

VAV System

Description

The VAV/CAV Controller Board is designed with
7 usable analog inputs, 2 analog outputs and 5
relay outputs. The controllers input and output
capabilities can be expanded by use of either 2
slot or 4 slot expansion boards that plug into the
WMVAV Controller by means of a modular cable.
The WMVAV Controller can be configured for
control of VAV Units (with or without VAVBOX
Controllers), Constant Volume Units and Air to Air
Heat Pump Units. Features include the following:

• Up to 8 Stages Each of Cooling and Heating
(4 on board, 12 more with expansion boards)

• Selectable Control Sensor

• Fan Proving Interlock

• Wetbulb Control of Economizer Operation

• Accepts Remote Occupied Signal

• Relief Pressure Control

• De-Humidification Capable

• Full Economizer Control

.20 Dia.
Typ. of 4

7.3”

TB1

COMM

T

SHLD

R

LD6

COMM

LD7
PWR

LD8
LED1

LD9
LED2

R1

U7

INPUTS

+VDC

AIN1
AIN2
AIN3

AIN4

AIN5

GND
GND
AOUT1

AOUT2
AIN7
GND

PJ1

TB3

PRESSURE
SENSOR

C21

RN1

1

CX5

1

RN3

+VREF

TESTPOINT

RV1
VREFADJ

C10

EXPANSION

WMVAV Controlle

6.2“

CX1

U1

U5

RS-485

COMM

HH

C1

P1

5.11V

EWDOG

R28

ADDRESS

RN5

PU1
D6
PU2

D7
PU3

D8
PU4

D9
PU5

D11
PU7

D14

C12

D15

C17

C20

R26

PJ2

U3

CX2

U2

EPROM

RAM

TUC-5RPLUS

(1MEG)

YS101816REV. 2

U6

C2

PHILIPS

C3

ADD

1
2
4
8

16

CX10

32
TOKEN

NETWORK

U10

SW1

C11

X2

0-5

0-1

VDC

VDC

JP1

U13

R15

U12

CX14

C14

R19

U14

CX13

U15

C15

R22

R24

R25

CX15

D17

PJ3

T'STAT

6.7”

D1

CX3

CX4

U4

RLY1

RLY2

PAL

1

RLY3

RN2

RLY4

CX6

X1

RLY5

1

RN4

U9

C7

R7

D10

L1

CX12

D12
R13

SC1

D19

D18

C19

C18

VR1

VR2

V1

D2D3D4D5

V2

V3

COM1-3

R1
R2
R3

R4

R5

COM4-5

TB2

V4

V5

U8

NE5090NPB3192
0PS

CX8

R6

C9

R10

D13

9936

R11

U11

MC34064A

C13

C16

TB4

GND

R27

D16

V6

POWER

7824CT

24VAC

M

6.6”

1.1”

• I.A.Q. Control with C0

Sensor Monitoring • Internal Trend Logging

2

• 7 Day, 2 Event per Day Scheduler Built In • 14 Day Holiday Scheduler Built In

• Optimal Start Scheduling Built In • Override from Occupied to Unoccupied Mode

• Supply Air Reset Capability

• Accepts Remote HVAC Mode Selection

Most HVAC unit applications can be configured with the standard WMVAV Controller. If the application requires more inputs
and/or outputs, optional relay expansion boards are available from the factory to provide for additional analog, binary or digi­tal inputs and outputs as required. These expansion boards are installed on either a 2 slot or 4 slot expansion base board
that connects to the WMVAV Controller board via a modular cable connection.

Mounting – Factory Installed

If purchased separately the WMVAV Controller is provided with an integral backplate and can be mounted in the HVAC unit
control panel or remotely located and wired to the HVAC unit.

Technical Data MG331-21-VAV Controller

Power 24 Volt AC Weight 1.5 lb.
Power Consumption 8 VA Maximum Network Connection RS-485
Operating Temp

10°F to 149°F

Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud

Inputs: Outputs:

Room Temperature Type III-10kohm sensor (1) Fan-ON/OFF
Supply Air Temperature Type III-10kohm sensor
Outside Air Temperature Type III-10kohm sensor
Static Pressure Sensor 0-5VDC
Humidity Sensor 4-20Ma

Remote Occupied Signal Binary Contact Economizer Analog Output 0-10 VDC
Fan Proof Of Flow Binary Contact VFD, Bypass or Inlet Vane

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-MG331-21-VAV-WMVAVController-01D.doc Page 1 of 1

Protocol HSI Open Protocol Token Passing

(5) Relays - (2 Amp @ 24 VAC)

(4) User Configurable For :
Heating Or Cooling
Stages, Reversing Valve,
Warm-up Mode Box Com­mand, Hot Gas Reheat
Control, Relief Fan Inter­lock, Preheat Coil

Analog Output 0-10 VDC

Control

MG320-00-VAV

V

r

VAV System

Description

The MG320-00-VAV VAVBOX controller is used for
controlling airflow and operation of VAV terminal
units. It is a programmable digital controller, which
allows for program setpoints to be stored in non­volatile memory. The controller is connected to a
room sensor via a modular cable assembly, which
monitors space temperature allowing the VAVBOX
controller to modulate a damper in response to
space temperature, duct temperature and airflow
requirements in the controlled space.

The MG320-00-VAV VAVBOX Controller has three
integral modular jacks for connection to the actua­tor, airflow sensor (for pressure independent appli­cations) and relay or analog expansion boards, via
modular cables. A 2 wire terminal block is provided
for connection of a 24VDC power transformer, a 2
wire terminal block is provided for the Room Tem­perature Sensor and a 3 wire terminal block is pro­vided for connection of the communications loop.
The controller has an on-board dip switch provided
for board addressing.

The VAVBOX controller is provided with two relays
for tri-state control of the damper actuator. The
actuator connects via a modular cable to the board
and provides the VAVBOX controller with feedback
monitoring for precise positioning of the actuator.

Mounting

Each VAVBOX controller is provided with a plastic
snap track modular mounting base. The snap track
is designed to be mounted with sheet metal screws
to a flat surface using the pre-punched mounting
slots provided. The VAVBOX controller is then
snapped into place on the snap track providing for
easy field mounting and servicing.

7.00"

AVBOX Controlle

FLOW

CX8

U8

RN1

1

B31920PS

74HC573N

D5

R27

CX9

C13

LMC662

C14

D5

R32

T'STA
T

F1

562

YS101

REV. 2

24VAC

GND

Zone Controller Board

R22

ADJ

VREF

P.U .

R23

R28

R24

U11

C11

R20

C15

EWDOG

R25

D7

CX10

COMM

75176

U10

LD3

POWER

R26

250

D4

MDL

VR1

T

7824

7824C

M

4.00"

U4

MS6264L-70PC

9936

RAM

C8

ADD

1
2
4
8
16

32
TOKEN
NET

LD2

LD1

REC

C7

9936

CX4

80C55
2

PHILIPS

PHILIPS

U5

U6

R14

D3

64A
MC340

U7

RAM

8K

32K

EPROM

PCB80C552-5-16WP

500650=1/3

DFD9940SM

93C46

CX6

C5

R100

R13

R12C6R11

Q2

R15

Q3

U3

V4.00F C094

AZZONE

R8

C3

C4

V1

R9

R10

fTimes New

fTimes New

Roman|b0|i0|

Roman|b0|i0|c0|p18;

c0|p18;OMRON

G5L-114P-PS
24VDC
CONTACT:
UL / CSA 5A250VAC

K1

D1

fTimes New

fTimes New

Roman|b0|i0|

Roman|b0|i0|c0|p18;

c0|p18;OMRON

G5L-114P-PS
24VDC
CONTACT:

D2

UL / CSA 5A250VAC

K2

CX3

CX1

U1

TCU32K2V

16L8

R1
R2
R3

CX2

X1

CX5

PJ1

PJ2

V2

Q1

B31920PS

74HC259

U2

C2C1

R4

R5
R6
R7

SION

EXPAN

TOR

ACTUA

R34

R18

U9

C9

C10

R19

ADDRE
SS

SW1

R21

SCAN

L1

R16

R17

Snap Track

Technical Data MG320-00-VAV

VAVBOX Controller

Specifications: Inputs:

Supply Power 24 Volt AC/DC Room Temperature Sensor Type III-10kohm Sensor

Power Consumption 4 VA Maximum Air Flow Sensor

(PI Applications Only)

Operating Temperature

35°F to 125°F

Power Wire Terminals

0-5” H2O Velocity Pressure

Modular Cable Connection

Operating Humidity 90% RH Non-Condensing Communications Wire Terminal s
Memory EEPROM Duct Temperature Sensor Type III-10kohm Sensor

Communications RS-485 - 9600 Baud

Outputs:

Mounting Method Snap Track Actuator Modular Cable Connection
Addressing Rocker Type Dip Switch Expansion Boards- Digital or Analog Modular Cable Connection

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-MG320-VAVBOXController-1C.doc Page 1 of 1

Wire Termi nal s

Wire Termi nal s

VAV System

Description

The OE322 - 3 Relay with Analog Out­put Expansion board is used in conjunc­tion with the MG320–00-VAVZ control­ler board to allow for control of VAV
terminal units, including series and par­allel fan terminal units with up to 3
stages of electric heat, SCR electric
heat or with modulating hot water heat.
The OE322 Analog Output Expansion
board provides 3 relay outputs for pilot
duty switching control, and 1 Analog
output for control of a 0-10V modulating
hot water valve or SCR controlled elec­tric heating coil. The expansion board is
also equipped with 24 VDC (+V and
GND) output terminals for powering a
24 VDC hot water valve actuator if de­sired. A 24 VAC hot water valve actua­tor can also be used but will require the
use of a separate field supplied 24 VAC
transformer to power the valve actuator.

The OE322 - 3 Relay W/ Analog Output
Expansion board connects to the
MG320–00-VAVZ controller board by
means of a modular cable provided with
the OE322 board. Power is supplied to
the board by means of this modular ca­ble. Screw terminals are provided for
connection of field wiring to the relay
and analog outputs.

The relay outputs are N.O. contacts with one common terminal. All outputs and the relay common are electrically
isolated from all other circuitry on the board. All relay outputs are supplied with transient suppression devices
across each set of contacts to reduce EMI and arcing. The relay output contacts are rated for pilot duty control of
a maximum of 2 Amps @ 24 VAC or 24 VDC. The analog output provides a 0 – 10 VDC modulating signal output
into a 1k Ohm minimum load. The 24 VDC (+V and GND) output terminals are rated for control of a 24 VDC
valve actuator with a maximum load rating of 12 Watts or less.

OE322 - 3 Relay W/ Analog Output

Expansion Board

3.00"

4.18"

Mounting

The OE322 - 3 Relay W/ Analog Output Expansion Board is supplied mounted on a plastic Snap Track channel.
The Snap Track channel has two mounting holes which are used to field mount the board with the provided
screws. The board should be mounted in close proximity to the MG320–00-VAV controller board to allow for con­nection of the modular cable.

Technical Data OE322- 3 Relay W/ Analog Output Expansion board

Operating Temp
Weight 4 oz Connection to Controller: Modular Cable

Analog Output Qty. 1 Analog Output Rating 0-10 VDC @ 1k Ohm minimum load
Relay Output Qty. 3 – Electrically Isolated Relay Contact Rating 2 Amp @ 24 VAC
Valve Actuator Power

Terminals Voltage

Three Year Warranty

Form: WMS-OE322-3Relay-1AnOutExpBrd-1C.doc Page 1 of 1

10°F to 149°F

24 VDC 24 VDC Valve Actuator

Operating Humidity 90% RH Non-Condensing

Outputs:

12 Watts

Maximum Load

WattMaster reserves the right to change specifications without notice

VAV System

Description

The OE352 – 2 Slot Modular I/O Base
Board is used in conjunction with the fol­lowing Modular Expansion Boards:

• O354 – 4 Analog Input &
1 Analog Output

• OE355 – 4 Analog Output

• OE356 – 4 Digital Inputs

• OE357 – 4 Relay Outputs

For easy wiring the OE352 – 2 Slot
Modular I/O Base Board provides for up
to (2) of the above expansion boards to
be connected to it by means of an integral
male/female push-in connector arrange­ment. Power is supplied to the Expans ion
Boards through this connector, simplifying
installation and connection. Jumpers are
also provided on the OE352 Modular I/O
Base Board for addressing and configu­ration of the Modular Expansion Board(s).

OE352 – 2 Slot

Modular I/O Base Board

Any combination of Modular Expansion
Boards may be connected to the OE352
Modular I/O Base Board to provide the
input/output capabilities required.

The main controller software used with
the OE352 Modular I/O Base determ ines
which Modular Expansion Boards m ay be
used.

Mounting

The OE352 – 2 Slot Modular I/O Base Board is supplied m ounted on a plastic Snap Track channel. T he Snap
Track channel has two mounting holes, which are used to field mount the board with the provided screws. The
board should be mounted in close proximity to the MG331-21-VAV HVAC Unit Controller board to allow for con­nection of the modular cable.

Technical Data

Operating
Power
Operating Temp

Communications Integral I2 C Chip Weight 8 oz.
Qty of Slots Provided For

Modular Expansion Boards

Three Year Warranty WattMaster reserves the right to change specifications without notice

24 VAC Power Consumption 5 VA Maximum

10°F to 149°F

Operating Humidity 90% RH Non-Condensing

Mounting Provisions Supplied with

2

OE352 – 2 Slot Modular I/O Base Board

Snap Track Base

Form: WMS-OE3522SlotBaseBoard-1B.doc Page 1 of 1

VAV System

Description

The OE353 – 4 Slot Modular I/O Base
Board is used in conjunction with the fol­lowing Modular Expansion Boards:

• O354 – 4 Analog Input &
1 Analog Output

• OE355 – 4 Analog Output

• OE356 – 4 Digital Inputs

• OE357 – 4 Relay Outputs

For easy wiring the OE353 – 4 Slot
Modular I/O Base Board provides for up
to (4) of the above expansion boards to
be connected to it by means of an integral
male/female push-in connector arrange­ment. Power is supplied to the Expans ion
Boards through this connector, simplifying
installation and connection. Jumpers are
also provided on the OE353 Modular I/O
Base Board for addressing and configu­ration of the Modular Expansion Board(s).

OE353 – 4 Slot

Modular I/O Base Board

Any combination of Modular Expansion
Boards may be connected to the OE353
Modular I/O Base Board to provide the
input/output capabilities required.

The main controller software used with
the OE353 Modular I/O Base determ ines
which Modular Expansion Boards m ay be
used.

Mounting

The OE353 – 4 Slot Modular I/O Base
Board is supplied mounted on a plastic
Snap Track channel. The Snap Track
channel has two mounting holes, which
are used to field mount the board with the
provided screws. The board should be
mounted in close proximity to the MG331­21-VAV HVAC Unit Controller board to
allow for connection of the modular cable.

Technical Data OE353 – 4 Slot

Modular I/O Base Board

Operating
Power
Operating Temp

Communications Integral I2 C Chip Weight 8 oz.
Qty of Slots Provided For

Modular Expansion Boards

Three Year Warranty

24 VAC Power Consumption 5 VA Maximum

10°F to 149°F

Operating Humidity 90% RH Non-Condensing

Mounting Provisions Supplied with

4

WattMaster reserves the right to change specifications without notice

Snap Track Base

Form: WMS-OE353-4SlotBaseBoard-1B.doc Page 1 of 1

OE354 – 4 Analog Input/1 Analog

VAV System

Description

The OE354 - 4 Analog Input/1 Analog
Output Modular Expansion Board is us ed
in conjunction with the OE352 - 2 Slot
Modular I/O Base Board or the OE353 - 4
Slot Modular I/O Base Board. The OE354
Expansion Board provides 4 analog in­puts and 1 analog output.

For easy wiring the OE354 – 4 Analog
Input/1 Analog Output Modular Expansion
Board connects to the OE352 or OE353
Modular I/O Base Boards by means of an
integral connector arrangem ent. Power is
supplied to the OE354 - Expansion Board
through this connector, sim plifying instal­lation and connection. Jumpers are pro­vided on the OE352 and OE353 Modular
I/O Base Boards for addressing of the
OE354 - Expansion Board(s).

The analog inputs have removable pull­up resistors associated with each input,
which can be used for connection of
thermistor type sensors or dry contact
closure configuration. The pull-up resis­tors are removed when a voltage signal is
to be used. Jumpers are pr ovided to con­figure the inputs for either 0-5 Volt or 0-10
Volt operation. Input and output resolution
is 0.4% or (0.04 Volts).

Output Modular Expansion Board

Technical Data OE354 – 4 Analog Input/1 Analog Output

Modular Expansion Board

Operating
Power
Operating Temp

Communications Integral I2 C Chip Weight 4 oz.

From OE352/OE353

Modular I/O Board

10°F to 149°F

Power Consumption 2 VA Maximum

Operating Humidity 90% RH Non-Condensing

Inputs:

Analog Input Qty. 4 Analog Input Types 10K Thermistor, Dry Contact, 0-10 or 0-5 Volt

Output:

Analog Output Qty. 1 Analog Output Rating 0-10 VDC @ 1K Ohm

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-OE354-4AI-1AO-ModExpBoard-1B.doc Page 1 of 1

OE355 – 4 Analog Output

VAV System

Description

The OE355 - 4 Analog Output Modular
Expansion Board is used in conjunc tion
with the OE352 - 2 Slot Modular I/O
Base Board or the OE353 - 4 Slot
Modular I/O Base Board. The OE355
Expansion Board provides (4) 0-10 VDC
analog outputs for driving actuators,
valves etc.

For easy wiring the OE355 – 4 Analog
Output Modular Expansion Board con­nects to the OE352 or OE353 Modular
I/O Base Boards by means of an inte­gral connector arrangement. Power is
supplied to the OE355 - Expansion
Board through this connector, simplify­ing installation and connection. Jumpers
are also provided on the OE352 and
OE353 Modular I/O Base Boards for
addressing of the OE355 - Expansion
Board(s).

Modular Expansion Board

The analog outputs are designed to
drive a 1K Ohm minim um load. All out­puts have a resolution of 1.6% or (.16
Volts).

Technical Data

Operating
Power
Operating Temp

Communications Integral I2 C Chip Weight 4 oz

Analog Output Qty. 4 Analog Output Rating 0-10 VDC @ 1K Ohm

Three Year Warranty WattMaster reserves the right to change specifications without notice

From OE352/OE353

Modular I/O Board

10°F to 149°F

Power Consumption 2 VA Maximum

Operating Humidity 90% RH Non-Condensing

Outputs:

OE355 – 4 Analog Output

Modular Expansion Board

Form: WMS-OE355-4AO-ModExpBoard-1B.doc Page 1 of 1

VAV System

Description

The OE356 - 4 Digital Input Modular Ex ­pansion Board is used in conjunction with
the OE352 - 2 Slot Modular I/O Base
Board or the OE353 - 4 Slot Modular I/O
Base Board. The OE356 Expansion
Board provides 4 digital inputs f or s ensing
status of connected dry contact closures
or connected voltage depending on how
the external equipment is wired to the
digital inputs on the OE356 board.

For easy wiring the OE356 – 4 Digital In­put Modular Expansion Board connects to
the OE352 or OE353 Modular I/O Base
Boards by means of an integral connector
arrangement. Power is supplied to the
OE356 - Expansion Board through this
connector, simplifying installation and
connection. Jumpers ar e also provided on
the OE352 and OE353 Modular I/O Base
Boards for addressing of the OE356 - Ex­pansion Board(s).

OE356 - 4 Digital Input

Modular Expansion Board

The digital inputs on the OE356 share one
common terminal between the 4 inputs.
The comm on terminal may be connected
to either 24 VAC or the 24 VAC com mon
depending on how the board is to be
wired to the equipment. Inputs are opti­cally isolated from other circuitry.

Technical Data OE356 – 4 Digital Input

Modular Expansion Board

Operating
Power
Operating Temp

Communications Integral I2 C Chip Weight 4 oz.

Digital Input Qty. 4 Digital Input Rating 24 VAC or Dry Contact Closure

Three Year Warranty WattMaster reserves the right to change specifications without notice

From OE352/OE353

Modular I/O Board

10°F to 149°F

Power Consumption 2 VA Maximum

Operating Humidity 90% RH Non-Condensing

Inputs:

Form: WMS-OE356-DigitalInput-ModExpBoard-1B.doc Page 1 of 1

VAV System

Description

The OE357 - 4 Relay Output Modular
Expansion Board is used in conjunc tion
with the OE352 - 2 Slot Modular I/O
Base Board or the OE353 - 4 Slot
Modular I/O Base Board. The OE357
Expansion Board provides 4 relay out­puts for pilot duty switching control.

For easy wiring the OE357 – 4 Relay
Output Modular Expansion Board con­nects to the OE352 or OE353 Modular
I/O Base Boards by means of an inte­gral connector arrangement. Power is
supplied to the OE357 - Expansion
Board through this connector, simplify­ing installation and connection. Jumpers
are also provided on the OE352 and
OE353 Modular I/O Base Boards for
addressing of the OE357 - Expansion
Board(s).

OE357 - 4 Relay Output

Modular Expansion Board

The relay outputs are N.O. contacts with
one common terminal. All outputs and
the relay common are electrically iso­lated from all other circuitry on the
board. All relay outputs are supplied
with transient suppression devices
across each set of contacts to reduce
EMI and arcing. The relay output con­tacts are rated for pilot duty control at a
maximum of 2 Amps @ 24 VAC or 24
VDC.

Technical Data OE357 – 4 Relay Output

Modular Expansion Board

Operating
Power
Operating Temp

Communications Integral I2 C Chip Weight 4 oz

From OE352/OE353

Modular I/O Board

10°F to 149°F

Power Consumption 2 VA Maximum

Operating Humidity 90% RH Non-Condensing

Outputs:

Relay Qty. 4 Relay Contact Rating 2 Amps @ 24 VAC

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-OE357-4RelayOutput-ModExpBoard-1B.doc Page 1 of 1

VAV System

Description

The patented design, OE21x series Standard
Room Sensor provides accurate sensing of
the room temperature. Its design allows for
flush wall mounting yet rejects the influence of
surface and internal wall temperatures. The
Standard Room Sensor is used in conjunction
with the WMVAV and the VAVBOX controllers.
Wire terminals are provided on the sensor for
connection to the controllers.

The Room Sensor’s attractive styling and off
white casing color make it suitable for most
building decors. If interior decoration requires,
the Room Sensor casing can also be painted
or wall papered without affecting the sensor's
performance. Room Sensors are available in 4
different configurations:

• OE210 Sensor Plain

• OE211 Sensor with Override

• OE212 Sensor with Setpoint

Adjustment

• OE213 Sensor with Setpoint

Adjustment and Override

3.25“

OE210, 211, 212 & 213

Standard Room Sensors

2.75“

W

A
R
M
E
R

C
O
O
L
E
R

2.00“

TMP

GND

AUX
OUT

4.50“

0.88“

0.25“

2.50"

Wall Cut-Out Dimensions
When Sensor Is To Be
Mounted Without

2.75“

Handy Box (By Others)

Modular cable from the W MVAV or VAVBOX
controllers to the Modular Room Sensor
should not be run in conduit with other AC line
voltage wiring, or with any conductors carrying
highly inductive loads.

Mounting

The Room Sensors are designed to be
mounted on a vertical, 2” x 4” electrical box
recessed in the wall. If the wall cannot be
penetrated, a plastic surface mount box such
as those made by Wiremold™, may be used to
mount the sensor to the wall surface.

W W
A A
R R
M M
E E
R R

C C
O O

OVR OVR

OE210 OE211

Room Sensor - Plain

Room Sensor
With Override

Technical Data OE210, OE211, OE212, OE213 Standard Room Sensor

Sensor Element Type III Thermistor

10k ohm @ 77º F

Accuracy

±0.4º F between 40º F to 95º F

Range -30º F to 150º F Weight 4 oz.

3 Year Warranty WattMaster reserves the right to change specifications without notice

Mounting Designed to be Flush Mounted to Wall

Line Loss 0.25º F max. error, using 22 AWG wire at 1000 ft

O O
L L
E E
R R

OE212

Room Sensor

With Setpoint Adjust

using Vertical 2” x 4” Handy Box (by others)

OE213

Room Sensor

With Setpoint Adjust

& Overide

Form: WMS-StandardRoomSensor-1B.doc Page 1 of 1

MG392-05

r

VAV System

Description

The MG392-05 Modular System Manager
provides a direct link to enable the system
operator to view the status and to adjust
the setpoints of any controller on the con­trol system communications loop. The
Modular System Manager is designed to
be used with the WattMaster VAV Control
System. The System Manager is housed
in an attractive beige colored plastic en­closure. The System Manager is
equipped with a four line by 20 character
backlighted display panel and a 24 key
membrane k eypad for data selection and
entry. All keypad operations are simple
and straight forward, utilizing non-cryptic
plain English language messages. Menu
driven programm ing allows for eas y setup
and operation without the need for spe­cialized training. The System Manager
also has 2 integral LED’s for user notifi­cation of system alarm conditions and
override initiations. Protection from un­authorized users is provided by the Sys­tem Manager’s integral multi-level pass­code authorization programming.

Modular System Manage

9.00"

System Manager

STATUS

SETPOINTS

NEXT

SCHEDULES

OVERRIDES

ALARMS

13

2

MINUS

-

PREV

6

ESC

9

4

708

DEC

5

DOWN

ENTER

UP

CLEAR

6.25"

1.81"

The Modular System Manager is con­nected to the communic ations and power
loop of the system via modular cables
that simply plug into the System Manager
board and are pigtailed into 6 individual
wires on the other end for hard wiring into
a 24 VAC transformer (by others) the lo­cal communications wiring loop.

Mounting

The Modular System Manager is designed f or wall mounting. Mounting holes are provided to attach the Modular
System Manager to a standard handy box. It is recomm ended that the System Manager be m ounted at approxi­mately eye level to allow for ease of programming and r eading of the display. The System Manager is typically
mounted in the building manager or s uperintendent’s office or in an equipm ent room. The attractive enclosure is
quite suitable for mounting in any location or with most decors.

Technical Data MGOE392-05

Modular System Manager

Power 24 Volt AC/DC Display 4 Line by 20 Character Backlighted LCD
Power Consumption 5 VA Maximum Network Connection RS-485
Operating Temp

10°F to 149°F
Operating Humidity 90% RH Non-Condensing Housing Material Beige Plastic
Keypad 24 Key Membrane Type Communications RS-485 - 9600 Baud

3 Year Warranty WattMaster reserves the right to change specifications without notice

Protocol HSI Open Protocol Token Passing

Form: WMS-MG392-05-ModularSystemManager-1C.doc Page 1 of 1

VAV System

Description

The MG391-05 Modular Service Tool
is a system interface that provides a
direct link to enable the system op­erator to view the status, configure
and to adjust the setpoints of any
controller on the control system
communications loop. The Modular
Service Tool is housed in an attrac­tive beige colored plastic enclosure.
The display area is covered with a
clear plastic bezel for protection of
the display screen. The Modular
Service Tool has a four line by 20
character display panel with adjust­able contrast control and a 27 key
membrane keypad for data selection
and entry. All keypad operations are
simple and straight forward, utilizing
non-cryptic plain English language
messages. Menu driven program­ming allows for easy setup and op­eration without the need for special­ized training. The MG391-05 Modu­lar Service Tool is supplied with (4)
AA (1.5V) Volt alkaline battery, a 120
VAC/5 VDC power supply and a
communication cable terminated
with an 8 pin DIN connector for con­nection to the Service Tool. The ca­ble allows the user to setup and pro­gram any controller equipped with a
8 pin DIN connector to be pro­grammed by simply plugging the
quick connect terminal into the
socket on the controller. A PL101904
Modular Service Tool Adapter is also
provided for use on controllers that
do not have 8 pin DIN connectors on
their circuit board.

2.02"

1.63"

MG391-05

Modular Service Tool

4.75”

Mode

Selection

”
0
0

.
0
1

13

2

654

708

9

-

The Modular Service Tool is designed to be carried by the system installer or service technician. Its rugged plastic
housing, provides superior protection for the electronic components housed inside. The OE391-054 Modular
Service Tool is a top quality service tool that will stand up to the demands of the typical job site environment for
many years.

Technical Data MGE391-05 Modular Service Tool

Power (4) AA (1.5V) Batteries

Supplied
Power Switch Membrane Switch Network Connection RS-485
Operating Temp
Operating Humid-

ity
Keypad 27 Key Membrane Style Communications RS-485 9600 Baud

3 Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-MG391-05-ModularServiceTool-1C.doc Page 1 of 1

90% RH Non-Condensing Color Beige

10°F to 149°F

Display 4 Line by 20 Character

Protocol HSI Open Protocol Token Passing

MG364-22– MiniLink

VAV System

Description

The MG364-22 MiniLink Polling Device is
a network controller that is used to inte­grate multiple local communication loops
into a network communications system.
“Network” loop terminals on the MiniLink
Polling Device are designed to be con­nected to the CommLink II and to other
MiniLink Polling Devices on the ”Network”
communications loop. “Local” loop termi­nals are designed to be connected to
controllers installed on the “Local” com­munications loop.

The MiniLink Polling Device is provided
with a 2 wire terminal block for connection
to the required 24 VAC source(by others).
It also has (2) 3 wire terminal blocks for
communications wiring. One of the termi­nal blocks is field connected to the “Local”
communications loop and the other is
field connected to the “Network” commu­nications loop.

Polling Device

The MiniLink Polling Device utilizes token
passing communication architecture. The
MiniLink Polling Device is designed to
serve as the local communications loop
master. This means that it is responsible
for sending the token to all the controllers
on the local communications loop. Net­work communications are of the RS-485
type operating at 19,200 baud. Local
communications are also of the RS-485
type and operate at on systems requiring
override or alarm indication. It also pro­vides tenant-logging capabilities for the
WattMaster VAV system.

MiniLink Polling Device Is Supplied Factory Mounted To

Control Enclosure. Cover Shown Removed For Clarity

Mounting

The MiniLink Polling Device is factory
mounted in a galvanized sheet metal en­closure. Mounting holes are provided in
the enclosure for surface mounting.

Technical Data MGE364-22 – MiniLink

Polling Device

Power 24 Volt AC System Connection Molex® Connectors & Terminals
Power Consumption 6VA Maximum Network Connection RS-485
Operating Temp
Operating Humidity 90% RH Non-Condensing Housing Material 22 Ga. Galvanized Steel
Communications RS-485 - 9600 Baud, Local Communications RS-485 - 19200 Baud, Network

3 Year Warranty WattMaster reserves the right to change specifications without notice

10°F to 149°F

Protocol HSI Open Protocol Token Passing

Form: WMS-MG364-22MiniLinkPollingDevice-1B.doc Page 1 of 1

VAV System

Description

The OE361 - CommLink II Communica­tions Interface allows user ac cess to any
controller connected to the controls sys­tem. The CommLink II comes packaged
in an attractive beige colored plastic en­closure. The Comm Link II is powered by
a small wall mounted plug-in transfor mer
that is included. Locally, an optional on­site computer may be connected to the
CommLink II for direct access to system
control parameters. Remote access is
obtained via an optional modem which is
connected with the CommLink II Com­munication Interface. With a modem in­stalled, the CommLink II may be config­ured to call a number, if an alar m condi­tion occurs. With the modem option the
system could be dialed and monitored
from a remote location by a PC. Com­puter and modem cables (6ft long) are
provided with the CommLink II.

OE361 – CommLink II

Communications Interface

Mounting

If an on-site computer is to be used for
direct connection and monitoring of the
system, the CommLink II should be lo­cated near the computer terminal to
monitor the system. If no on-site com­puter is to be used, locate the Comm Link
II near the phone line jack for ease of
connection to a modem. If for any reason
you use cables of greater length than
those provided with the CommLink II (6 ft.
long) be sure the cables that connect the
CommLink II to the modem and the
CommLink II to the on-site computer do
not exceed twenty-five feet in length.

Technical Data OE 361 - CommLink II Communication Interface

Power 24 Volt AC Computer Connection RS-232
Plug-in Transformer 110V to 24V (Included) Network Connection RS-485
Power Consumption 14 VA Maximum Protocol HSI Open Protocol Token Passing
Operating Temperature
Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud

Three Year Warranty WattMaster reserves the right to change specifications without notice

10°F to 140°F

Physical Connections (2) 9 Pin/DB9 Male

Form: WMS-OE361-CommLink-1B.doc Page 1 of 1

1.50

7.00

REAR VIEW

FRONT VIEW

VAV System

Description

The OE361-08 CommLink III Communi­cations Interface allows com puter access
into the WattMas ter VAV controls system
and also provides communications across
multiple local communications loops on
the control system.

The CommLink III comes pac kaged in an
attractive beige colored plastic enclos ure.
The Comm Link III is powered by a small
wall mounted plug-in transformer that is
included. Locally, an optional on-site Per­sonal Computer with Prism software in­stalled may be connected to the
CommLink III to provide direct access to
system control parameters by using the
supplied USB cable (6 ft. long).

Remote telephone access to the control
system can be obtained via the optional
OE419-05 Modem Kit which can be field
installed inside the CommLink III Com­munication Interface. With the optional
modem kit installed, the control system
can be accessed remotely by using a
Remote Link modem (purchased sepa­rately) connected to a Personal Computer
with Prism software installed at the re­mote location and dialing the phone num­ber of the phone line the CommLink III
with modem kit is c onnected to. Also with
the modem k it installed the CommLink III
can be configured to call a pager or cell
phone number, if an alarm condition oc­curs. A USB cable (6ft long) is provided
with the CommLink III for connection to
your computer.

OE361-08 CommLink III

Communications Interface

5.25

Mounting

If an on-site c omputer is to be used for direct c onnection and monitoring of the system, the Comm Link III s hould
be located near the c omputer term inal to m onitor the system . If no on-site com puter is to be used and/or you are
installing the optional modem kit, locate the CommLink III near the phone line jack for ease of connection.

Technical Data OE361-08 CommLink III Communication Interface

Power 24 Volt AC Computer Connection USB Version 1.1 or 2.0
Plug-in Transformer 110V to 24V (Included) Network Connection RS-485
Power Consumption 14 VA Maximum Protocol HSI Open Protocol Token Passing
Operating Temperature
Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-OE361-08-CommLinkIII-01A.doc Page 1 of 1

10°F to 140°F

Cabling Included (1) 6 Ft. Long USB Cable

1.50

7.00

REAR VIEW

FRONT VIEW

VAV System

Description

The OE361-12 Comm Link IV Communi­cations Interface allows com puter acc es s
into the WattMas ter VAV controls system
and also provides communications
across multiple local communications
loops on the control system.

The CommLink IV comes packaged in
an attractive beige colored plastic enclo­sure. The Com mLink IV is powered by a
small plug-in transf ormer that is included.
Locally, an optional on-site personal
computer with Prism software installed
may be connected to the CommLink IV
to provide direct access to system con­trol parameters. A USB cable ( 6 ft. long)
is provided with the CommLink IV for
connection to your computer.

Remote telephone acces s to the control
system can be obtained by purchasing
the optional OE419-06 Remote Link II
modem. With the optional Rem ote Link II
modem installed, the c ontrol system can
be accessed remotely by using another
Remote Link II m odem (purchas ed sepa­rately) connected to a personal computer
with Prism software installed at the re­mote location. W ith the Remote Link in­stalled at the job site, the Com mLink IV
can be configured to call a pager or cell
phone number if an alarm condition oc­curs.

OE361-12 CommLink IV

Communication Interface

5.25

An optional OE415-02 IP Module Kit is
also available that provides an Ethernet
connection to the controls system from
any computer connected to your build­ing’s LAN. It can also be configured to
allow access to the control system from
the Internet if your Ethernet firewall is
configured for this option.

Mounting

If an on-site computer is to be used for direct c onnection and monitoring of the system, the CommLink IV should
be located near the c omputer term inal to m onitor the system . If no on-site com puter is to be used and/or you are
installing the Remote Link II option, locate the CommLink IV near the phone line jack for ease of connection.

Technical Data OE361-12 CommLink IV Communication Interface

Power 24 Volt AC *Remote Link II Conn. RS-232 Serial Port (9 pin)
Plug-in Transformer 120V to 24VAC (Included) **Ethernet Conn. RJ-45 Ethernet Port
Power Consumption 14 VA Maximum Network Loop RS-485 - 19,200 Baud
Operating Temperature
Operating Humidity 90% RH Non-Condensing Cabling Included (1) 6 Ft. Long USB Cable
Computer Conn. USB Version 1.1 or 2.0 Local Loop RS-485 - 9600 Baud

Three Year Warranty

* This Port Is Only Used With The Optional OE419-06 Remote Link II. ** This Port Is Only Used With The Optional OE415-02 IP Module Kit.

Form: WMS-CLKIV-SUB-01A-0907 Page 1 of 1

10°F to 140°F

Protocol HSI Open Protocol Token Passing

WattMaster reserves the right to change specifications without notice

VAV System

OE366 USB-Link

Description

The OE366 USB-Link allows com puter access into
the WattMaster VAV controls system and also pro­vides communications across multiple local com­munications loops on the control system when a
CommLink Communications Interface is installed
on the system.

The USB-Link provides a direct link to enable the
system operator to view the status and to configure
and adjust the setpoints of any controller on the
control system communications loop using the
Prism II computer front end software.

The USB-Link is small in size and is powered by
the USB port of the computer it is plugged into,
making it com pletely portable and allowing connec­tion to the system from any controller.

The USB-Link is supplied with a USB cable, a mini­DIN male com munication cable, and two mini-DIN
to terminal adapters. The communication cable
allows the user to walk up to any controller that has
a communication s ocket and plug in the USB-Link
to gain access to the system. The adapters are
used for boards that do not have a f emale mini-DIN
plug connection.

To use the USB-Link, you will need a computer
with an available USB 1.1 or 2.0 port with the in­cluded USB drivers installed. You will also need the
Prism II computer front end software installed on
the computer.

CAUTION: The USB-Link does not work with Prism
I software. It only works with Prism II.

Technical Data OE366 USB-Link

Operating Temperature
Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud

Computer Connection USB Version 1.1 or 2.0 Adapters Included PL1019054 and PL101905 Mini-DIN

Three Year Warranty

10°F to 140°F

Cabling Included (1) 6 Ft. Long USB Cable and

(1) 7 Ft. Long Communications Cable

Plug Adapters

WattMaster reserves the right to change specifications without notice

Form: WMS-OE366-USB-Link-01A.doc Page 1 of 1

VAV System

w

w

Description

The OE419-04 Remote Link is essen­tially a 14,400 baud modem. The Re­mote Link is used f or achieving remote
communications with all WattMaster
VAV systems. Built in error correction
(V.42/mnp 2-4) and data compression
(V.42bis/mnp 5) will maximize data
transfer integrity and boost average
throughput up to 57.6 kbps. The Re­mote Link connects to the Com mLink II
communications interface at the Orion
control system location. A telephone line
connects the Remote Link to the local
phone service. By dialing the telephone
number that the Remote Link is con­nected to, (using a modem from a re­mote location) the Orion system can be
monitored and controlled using the
WattMaster Prism computer front end
software package.

OE419-04 Remote Link

1

4

5"

R

em

ote

Lin

k

SIG

DET

RDY

SND

REC

PWR

Front Vie

7"

1

2

1"

Mounting

The Remote Link should be mounted
close to a serviceable telephone outlet.
It connects via a serial data cable to the
CommLink II communications interface
and via a telephone cable to the tele­phone outlet jack. A molded cable for
connection from the CommLink to the
Remote Link is supplied with the
CommLink . If an on-site com puter is re­quired, it should be connected to the
CommLink at or near the location where
the Remote Link is located. If for any
reason you use cables of greater length
than those provided with the CommLink
II (6 ft. long) be sure the cables that
connect the CommLink II to the Remote
Link and the Comm Link II to the on-site
computer do not exceed twenty-five feet
in length.

SERIAL #

TELCO

LINE

SERIAL DATA

POW

ER

Rear Vie

Technical Data

OE419-04 Remote Link

Power 9 Volt DC Computer Connection RS-232, 25 Pin DB25 Female
Plug-in Transformer 110V to 9V (Included) Phone Connection RJ-11 Female
Power Consumption 500mA Maximum Line Speed 14,400 bps
Operating Temperature

10°F to 140°F

Data Compression V.42bis/MNP 5

Operating Humidity 90% RH Non-Condensing Error Correction V.42/MNP 2-4

WattMaster reserves the right to change specifications without notice

3 Year Warranty

Form: WMS-OE419-SUB-01B Page 1 of 1

1.50

7.00

REAR VIEW

FRONT VIEW

VAV System

OE419-06 Remote Link II

Description

The OE419-06 Remote Link II is essentially
a 14,400 baud modem that connects to the
CommLink IV via a serial cable. W hen it is

5.25

used as a modem ( at the remote com puter
location) it connects to the remote com­puter via a USB cable. The Remote Link II
is used to provide for rem ote dial-up com­munications with the CommLink II or
CommLink IV communication interfaces.

The Remote Link II connects to the
CommLink II or IV communications inter­face at the control system loc ation. A tele­phone line connects the Remote Link II to
the local phone service. By dialing the tele­phone number at the job site that the Re­mote Link II is connected to (using another
Remote Link II m odem from a r em ote loca­tion), the control system can be monitored
and controlled using the Prism computer
front end software package.

Mounting

The Remote Link II should be mounted
close to a serviceable telephone outlet. The
CommLink II or CommLink IV communica­tions interface connects to the Remote Link
II with the supplied 6 ft. long serial cable.

It is recommended that a second Remote
Link II be used as the dial out modem at
the remote computer location. WattMaster
will not support any other internal or exter­nal modems by other manuf ac turer s. A 6 ft.
long USB cable is supplied with the Re­mote Link II to connect to the remote com­puter USB port when the Remote Link II is
used at the remote c omputer loc ation. If an
on-site computer at the job location is re­quired, it should be connected to the
CommLink II or IV at or near the location
where the Remote Link II is located, f or ease of connection. If you need to use a longer serial or USB cable, you
will need to purchase these from an elec tronics supply store. Do not use any USB or serial cables longer than 25
ft.

Technical Data

Power 9 VDC
Plug-in Transformer 120 VAC to 9 VDC

Power Consumption 500mA Maximum Phone Connection RJ-11 Female
Operating Temperature
Operating Humidity 90% RH Non-

CommLink Connection 6 ft. - Serial Cable Error Correction V.42/MNP 2-4

3 Year Warranty

Form: WMS-OE419-06-RemoteLnkII-01A.doc Page 1 of 1

OE419-06 Remote Link II

(Included)

10°F to 140°F

Condensing

Computer Connection
For Remote Modem Use

Line Speed 14,400 bps
Data Compression V.42bis/MNP 5

WattMaster reserves the right to change specifications without notice

6 ft. USB Cable For Use With

USB Version 1.1 or 2.0 Ports

VAV System

9VDC

10BaseT

OE415 IP-Link Kit

Description

The OE415 IP-Link Kit is used to provide
TCP/IP Internet and/or intranet connec­tion for Ethernet networked computer
systems allowing them to communicate
with the WattMaster VAV System through

V

R

T

K

C

C

E

N

R

A

S

L

the Commlink. The OE415 IP-Link Kit
Includes the IP-Link device with serial
cable, 110/9 Volt power supply, iLan
EPROM for the CommLink, WattMaster
Prism software CD and documentation,
Connect One firmware and documenta­tion CD, and the IP-Link Technical Guide

Computer Front End
Software & Manual

and installation instructions.
The TCP/IP connection provided on the

IP-Link is a TCP connection on a single
port number and is static in nature.
Firewall and proxy servers can easily be
configured to allow traffic to and from the
IP-Link. The nature of the data is raw in
form and comprised of packets native to
WattMaster Prism software. The IP-Link
device will respond to ICMP traffic (PING)
for verification of proper configuration.
Prism software is required in order to
read and send data to the IP-Link and
through the CommLink to the WattMaster
VAV system. The CommLink must have
the included iLan EPROM chip installed to
communicate with the WattMaster VAV
system. The IP-Link connects to the CommLink via the supplied RS232 DB9 Serial Cable. The IP-Link connects
to the host Ethernet system by means of a 10BaseT, RJ-45 jack on the back of the IP-Link. Power is provided to
the IP-Link by the 110/9 Volt Power supply furnished in the kit. The kit also contains a firmware CD used for set­ting up the IP-Link. Setup of the IP-Link requires a knowledgeable IT person familiar with configuring network
adapters and TCP/IP systems. WattMaster Prism software is included for installation to the local intranet or re­mote Internet PC(s) that will be used to program and monitor the WattMaster VAV system.

onnect

C

Documentation

C

ne

PWR

Firmware &

onnect

www.connectone.com

ne

3.25”

onnect

”
0
5

T

.

C

A

1

C

V

R

K

C

E

N

R

S

L

ne

PWR

5.25”

Serial

Mode

Technical Data OE415 IP-Link Kit

Power Supply 9 Volt VDC, 350mA System Connection RS-232 DB9 Female Serial Port
Power Consumption 2 Watts Network Connection 10BaseT Ethernet – RJ-45 MDI Socket
Operating Temp

32°F to 158°F

Operating Humidity 90% RH Non-Condensing Standard Compliance Ethernet IEEE 802.3 10BaseT
Data Rate Up to 230 Kbps Flow Control Hardware (DTR, RTS, CTS, DCD) and

1 Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-OE415-IP-Link Ki-1A.doc Page 1 of 1

Internet Protocols ARP,IP,ICMP,UDP,TCP,DNS,DHCP,

SMTP, POP3, MIME, HTTP

Software

4

”

VAV System

OE415-02 IP Module Kit

Description

The OE415-02 IP Module Kit (when installed and
configured in the Comm Link IV communication in­terface) provides TCP/IP Internet and/or intranet

1.28”

connection for Ethernet networked computer sys­tems allowing them to comm unicate with your con­trol system. The OE415-02 IP Module Kit consists
of the IP Module and a 10 ft. long CAT5 Ethernet
crossover cable.

1.3

The IP Module plugs into a mating 40 pin (2 x 20)
connector located on the CommLink IV circuit
board. Installation is easily accomplished by re-

IP Module

moving the CommLink IV case cover screws, re­moving the case cover to acc ess the circuit board,
and then plugging the IP Module into its mating
socket connector. Corr ect alignment is made easy
because of the (4) slot alignment tabs located
around the perimeter of the processor base. It is
not possible to incorrectly align the IP Module to
the socket connector because of this feature.

The TCP/IP connection provided by the IP Module
installed in the CommLink IV is a TCP connection
on a single port number and is static in nature.
Firewall and proxy servers can easily be configured
to allow traffic to and fr om the Comm Link IV when
the IP Module is installed. The nature of the data is
raw in form and comprised of packets native to
Prism software. The IP Module will respond to
ICMP traffic (PING) for verification of proper con-

CAT5 Ethernet Cable

figuration. Prism software is required in order to
read and send data to the IP Module and through
the CommLink IV to the control system. The IP
Module connects to the host Ethernet system by
means of the supplied 10 ft. long CAT 5 Ethernet
crossover cable which plugs into the 10/100 Base­T, RJ-45 jack on the back of the Comm Link IV and into a Ethernet router or Ether net modem on your building’s
LAN. Setup of the Comm Link IV with the IP Module requires a k nowledgeable IT person fam iliar with configuring
network adapters and TCP/IP system s. Prism software must be installed on the local LAN c omputer(s) and/or
remote Internet computers that will be used to program and monitor the control system.

Technical Data

Operating Temperature
Operating Humidity 90% RH Non-Condensing Network Connection 10/100 Base-T Ethernet

Protocols Supported ARP, UDP, TCP, Telnet,

Network Interface IEEE 802.3 RJ45 Ethernet

3 Year Warranty

Form: WMS-OE415-02-IPModuleKit-01A.doc Page 1 of 1

OE415-02 IP Module Kit

10°F to 140°F

ICMP, SNMP, DHCP, BOOTP,

Auto IP, HTTP, SMTP, TFTP

10BASE-T Or 100BASE-TX

(Auto-sensing)

Media Access Control CSMA/CD with ACK

RJ-45 MDI Socket

Flow Control XON/XOFF (Software), CTS/RTS

(Hardware), None

Management Internal Web Server, SNMP (Read

Only), Serial Login, Telnet Login,

Device Installer Software

WattMaster reserves the right to change specifications without notice

OE310-21-LP

g

r

VAV System

Description

The OE310-21-LP Lighting Controller
allows an Orion Control System to also
control the building lighting systems
along with the HVAC system. The
Lighting Controller is provided with 7
schedules, each providing 2 start/stop
events per day and 14 start/ stop holi­day events. Lighting Controller sched­ules are designed to operate from a
starting time, a contact closure or a per­centage light level as sensed by a (0-

1.5kohm, 0-100%) light level sensor,
thus providing maximum lighting control
flexibility. As an example, a lighting
schedule could be programmed to allow
the lighting circuit to come on at dusk,
based on a light sensor and then turned
off at a given time during the night
based on a time schedule. With the
Lighting Controller, lighting schedules
may be overridden to “on” with a user
provided pushbutton. This pushbutton is
wired to the analog input that corre­sponds to the schedule number, on the
Lighting Controller. Schedule override
time periods are programmed from the
Orion Prism program. Lighting Control­ler output relays may be configured for
continuous ON mode during the occu­pied schedule or a short pulse when the
schedule starts and another short pulse
when the schedule ends. Pulsed output requires an optional Expansion Relay Board and a GE
equivalent lighting relay. The Lighting Controller may be connected to any local loop at any point on the Orion
system. Orion Prism computer front end software is used to interface with the Lighting Panel Controller functions.
The Lighting Controller cannot be programmed through the System Manager operator interface.

9.00

7.63

7.13

CPU

RAM

Li

hting Controlle

GND

+5V

SIG

ANALOG

INPUTS

+V
+V

1

2
3
4
5
6
7
8
G
G

ANALOG

OUTPUTS

EPROM

PIN 1PIN 1

PAL

A1
A2

G

PIN 1PIN 1

8.25

™

RR-7 or RR-9 or

1.00

Mounting

The Lighting Controller is provided with an integral backplate for mounting inside of a control enclosure. It is rec­ommended that Lighting Controller be mounted in the in a control enclosure in the building equipment room. An
optional factory control enclosure for the Lighting Controller is available.

Technical Data OE310-21-GPC

GPC-17 Controller

Power 24 Volt AC Weight 1.5 lb.
Power Consumption 10 VA Maximum Network Connection RS-485
Operating Temp

10°F to 149°F

Protocol HSI Open Protocol Token Passing

Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud

Inputs: Outputs:

Types Allowed Type Provided Continuous Contact Closure or

Connected to Analog Input

by Others)

be Programmed to Follow or

Total Inputs Available 1 Total Outputs Available 7

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-OE310-21-LightingController-01A.DOC Page 1 of 1

Pushbutton Override

#8 (N.O. Binary Contact

All Schedules May

Not Follow the Override

Start Pulse and Stop Pulse

for Each of the 7 Schedules

(N.O. Binary Contact)

Relay Power Rating 2 Amp @ 24 VAC

VAV System

A

OE331-21-GPC Plus

GPC Plus Controller

Description

The OE331-21 General Purpose Con­troller Plus (GPC Plus) is used for con­trolling equipment or processes that can­not be controlled using HVAC controllers.
The Prism computer front end software is
used to interface with the GPC Plus con­troller functions. The GPC Plus Controller
provides the flexibility to control, schedule
and/or monitor equipment such as unit
heaters, exhaust fans, motorized louvers,
etc.. The GPC Plus has (6) configurable
inputs which will accept signals from
thermistor temperature sensors, 4-20mA
or 0-5VDC transmitters or dry contact
closures. An additional modular input is
provided for connection of an OE271
static pressure sensor. The GPC Plus
has (5) relay outputs for on/off control
and (2) analog outputs. With the addition
of the OE352 2 Slot Expansion Base
Board and (1) OE357 4 Relay Expansion
Board, (4) additional relay outputs are
available providing for a maximum of (9)
usable relay outputs. The GPC Plus also
has (5) separate 2 event per day sched­ules, each with its own optimal start func­tions built in. In addition the GPC Plus
provides lead/lag start capabilities.

.20 Dia.
Typ. of 4

7.3”

TB1

COMM

T

SHLD

R

LD6

COMM

LD7
PWR

LD8

LED1

LD9

LED2

R1

INPUTS

+VDC
AIN1
AIN2
AIN3

AIN4
AIN5

GND

GND
AOUT1
AOUT2

AIN7

GND

PJ1

TB3

PRESSURE
SENSOR

C21

RN1

1

CX5

1

RN3

+VREF

TEST POINT

U7

RV1
VREF ADJ

EXPANSION

6.2“

CX1

U1

U5

RS-485

COMM

HH

C1

P1

5.11V

EWDOG

R28

RN5

PU1
D6
PU2
D7
PU3
D8
PU4
D9
PU5
D11
PU7

C10

D14

C12

D15

C17

C20

R26

PJ2

U3

CX2

U2

EPROM

RAM

TUC-5R PLUS

(1 MEG)

YS101816 REV. 2

U6

C2

PHILIPS

C3

ADD

DDRESS

1
2
4
8

16

CX10

32
TOKEN
NETWORK

U10

SW1

C11

X2

0-5

0-1

VDC

VDC

JP1

U13

R15

U12

CX14

C14

R19

U14

CX13

U15

C15

R22
R24
R25

CX15

D17

PJ3

T'STAT

6.7”

D1

CX3

CX4

U4

RLY1

RLY2RLY3RLY4RLY5

PAL

1

RN2

CX6

X1

1

RN4

U9

C7

R7

D10

CX12

D12
R13

SC1

D19

D18

C19

C18

VR1

VR2

V1

D2D3D4D5

V2

V3

COM1-3

R1
R2
R3
R4
R5

COM4-5

TB2

V4

V5

U8

NE5090NPB3192
0PS

CX8

R6

L1

C9

R10

D13

9936

R11

U11

MC34064A

C13

C16

TB4

GND

R27

D16

V6

POWER

7824CT

24VAC

M

6.6”

1.1”

Mounting

The GPC Plus is provided with an integral backplate for mounting inside of a control enclosure. It is recom­mended that the GPC Plus be mounted in the HVAC unit control enclosure, or in a control enclosure in the
building equipment room. An optional factory control enclosure for the GPC Plus is available.

Technical Data OE331-21-GPCPLUS

GPC Plus Controller

Power 24 Volt AC Weight 1.5 lb.
Power Consumption 8 VA Maximum Network Connection RS-485
Operating Temp

10°F to 149°F

Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud

Inputs: Outputs:

Types of Allowed
Inputs

Total Inputs Available 7 Analog Output Qty. 2
Static Pressure Inputs 1 (Modular ) Analog Output Signal 0-10 VDC
Configurable Inputs 6 Optimal Start Schedules (5) Total - (1) for Each Schedule
Schedules Available (5) 2 Event per day Lead Lag Scheduling (1) Output can be Configured

Three Year Warranty WattMaster reserves the right to change specifications without notice

Type III-10kohm sensors Total Relay Qty. On Board 5

4-20ma sensors
N.O. Binary Contact
N.C. Binary Contact Relay Power Rating (2 Amp @ 24 VAC)

Protocol HSI Open Protocol Token Passing

Total Relay Qty. Available With
Optional Expansion Board

9

Form: WMS-OE331-21-GPCPlusController-01A.doc Page 1 of 1

OE310-21-GPC

r

VAV System

GPC-17 Controlle

Description

The GPC-17 Controller is used for con­trolling equipment or processes that can­not be controlled using standard HVAC
Unit controllers. The WattMaster Prism
computer front end software is used to
interface with the GPC-17 controller func­tions. The GPC-17 is designed with 6 uni­versal inputs, 7 binary outputs and 2
analog output. Each input can be config­ured for use with a Type III-10k ohm
thermistor temperature sensor, 4-20ma
sensor, 0-5 VDC sensor or a N.O. or N.C.

9.00

binary contact closure. Sensor reading
values can be selected for the specific
input type, such as, %RH, Deg. F, RPM,
etc.. If a thermistor type temperature sen­sor is used, a calibration option is avail­able to offset the actual temperature in
relation to the displayed reading. It also
has one input configures for Duct Static
Pressure and one configured for Building
Pressure. The 7 binary outputs may be
configured to operate based on any of the
8 sensor inputs, outdoor air temperature,
the GPC-17 controller’s internal schedule
or an external schedule. They can also be
configured to use AND/OR logic state­ments. A Relay Expansion Board can be
connected to the GPC-17 to give it an
extra 8 relay outputs. In addition to the
relay outputs the GPC-17 contains two 0­10VDC analog outputs which can be configured for simple floating point or PID control. The analog output can
also be configured to operate based on any of the 8 sensor inputs, outdoor air temperature, the GPC-17 control­ler’s internal schedule or an external schedule. In addition an Analog Output Expansion Board can be connected
to the GPC-17, giving it two additional analog outputs.

7.63

7.13

RAM

CPU

EPROM

PIN 1PIN 1

PAL

GND

+5V

SIG

ANALOG

INPUTS

+V
+V

1

2

3
4
5
6
7

8
G
G

ANALOG

OUTPUTS

A1
A2

G

PIN 1PIN 1

8.25

1.00

Mounting

The GPC-17 is provided with an integral backplate for mounting inside of a control enclosure. It is recommended
that the GPC-17 be mounted in the HVAC unit control enclosure, or in a control enclosure in the building equip­ment room. An optional factory control enclosure for the GPC-17 is available.

Technical Data OE310-21-GPC

GPC-17 Controller

Power 24 Volt AC Weight 1.5 lb.
Power Consumption 10 VA Maximum Network Connection RS-485
Operating Temp

10°F to 149°F

Protocol HSI Open Protocol Token Passing

Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud

Inputs: Outputs:

Types Allowed Type III-10kohm sensors Relay Qty. 7

4-20ma sensors Relay Power Rating (2 Amp @ 24 VAC)

N.O. Binary Contact Analog Output Qty. 2

N.C. Binary Contact Analog Output Signal 0-10 VDC

Total Inputs Available 8

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-OE310-21-GPC-17Controller-01A.doc Page 1 of 1

A

VAV System

Description

The OE331-21-KWH (Kilowatt Hour)

OE331-21-KWH

KWH Module

Module provides the ability to record and
display KW usage and to limit demand.
Using the Prism Graphical Computer
Front End, a status screen displays cur­rent demand, yesterday’s demand, and
the peak demand values and times for
both. Historical logs from the previous
month and the current month are also
available and can be downloaded for
archiving via the PRISM software inter­face. A running total of power consump­tion is also displayed on the Status
Screen. This value can be manually re­set at any time allowing the user to moni­tor overall power consumption over long
periods of time.

Analog Input #2 on the KWH Module
monitors all incoming contact closures
from a KW pulse meter (usually provided
by the utility company) and times them to
generate the current KW Demand. A
user adjustable setpoint is provided to

.20 Dia.
Typ. of 4

7.3”

TB1

COMM

T

SHLD

R

LD6

COMM

LD7
PWR

LD8
LED1

LD9
LED2

R1

U7

INPUTS

+VDC

AIN1
AIN2
AIN3

AIN4

AIN5

GND

GND
AOUT1

AOUT2

AIN7

GND

PJ1

TB3

PRESSURE
SENSOR

C21

RN1

1

CX5

1

RN3

+VREF

TEST POINT

RV1
VREF ADJ

C10

EXPANSION

6.2“

CX1

U1

U5

RS-485

COMM

HH

C1

P1

5.11V

EWDOG

R28

RN5

PU1
D6
PU2

D7
PU3

D8
PU4

D9
PU5

D11
PU7

D14

C12

D15

C17

C20

R26

PJ2

U3

CX2

U2

EPROM

RAM

TUC-5R PLUS

(1 MEG)

YS101816 REV. 2

U6

C2

PHILIPS

C3

ADD

DDRESS

1
2
4
8

16

CX10

32
TOKEN
NETWORK

U10

SW1

C11

X2

0-5

0-1

VDC

VDC

JP1

U13

R15

U12

CX14

C14

R19

U14

CX13

U15

C15

R22

R24

R25

CX15

D17

PJ3

T'STAT

6.7”

D1

CX3

CX4

U4

RLY1

RLY2RLY3RLY4RLY5

PAL

1

RN2

CX6

X1

1

RN4

U9

C7

R7

D10

L1

CX12

D12
R13

SC1

D19

D18

C19

C18

VR1

VR2

V1

D2D3D4D5

V2

V3

COM1-3

R1
R2
R3

R4

R5

COM4-5

TB2

V4

V5

U8

NE5090NPB3192
0PS

CX8

R6

C9

R10

D13

9936

R11

U11

MC34064A

C13

C16

TB4

GND

R27

D16

V6

POWER

7824CT

24VAC

M

6.6”

1.1”

define what each pulse represents in
Kilowatts Per Hour. A Demand Factoring
Constant is also provided if it appears that contact bounce may be affecting the operation. The Demand Factor is
simply the number of times to average the current demand reading to create the final Demand Reading. It is nor­mally left at a value of '1' unless a problem is encountered.

Two additional setpoints are provided for the EMS Demand Limiting Broadcast. A Limit Setpoint and a Propor­tional Reset Range are provided so that the user can adjust when to begin shedding demand and how rapidly
this occurs. Any controllers equipped to "hear" this broadcast begin spreading their heating and cooling setpoints
proportionally until the maximum EMS Adjustment limit is reached. This value is also user adjustable for each
individual controller so that the rate at which demand is shed can be optimally configured for special cases where
not all zones can tolerate a large change in temperature.

Mounting

The KWH Module is provided with an integral backplate for mounting inside of a control enclosure. It is recom­mended that the KWH Module be mounted in the HVAC unit control enclosure, or in a control enclosure in the
building equipment room. An optional factory control enclosure for the KWH Module is available.

Technical Data OE331-21-KWH

KWH Module

Power 24 Volt AC Weight 1.5 lb.

Power Consumption 8 VA Maximum Network Connection RS-485

Operating Temp

10°F to 149°F

Protocol HSI Open Protocol Token Passing

Operating Humidity 90% RH Non-Condensing Communications RS-485 - 9600 Baud

Input Available Output Available

AIN2 Dry Contact Closure from

KW Pulse Meter (By Others)

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-OE331-21-KWH-Module-01A.doc Page 1 of 1

RS-485 Communications Loop EMS Demand Limiting

Broadcast

VAV System

Description

The OE510-XX-VAV Pressure Depend­ent Round Damper consists of a round
air damper, MG320-VAV controller, and
OE282 damper actuator. An optional
auxiliary relay board (OE321) is avail­able for control of auxiliary heat and/or

1/2" Foil Faced
Insulation

OE510-XX-VAV – Pressure

Dependent Round Damper

Round Damper
Blade Assembly

Zone Controller

control of series or parallel flow fan ter­minal units.

The MG320-VAV Zone Controller is

W

A

O

IR

L

F

F

L
R
I

O

A

W

microprocessor based and communi­cates with the HVAC Unit Controller on
the WMVAV communications loop. The
VAV Controller monitors the space tem­perature and allocates the proper air-

Actuator

flow into its assigned space to achieve
the desired comfort and ventilation lev­els.

Control Enclosure
(Cover Removed)

Pressure Dependent Round Dampers
are used in air conditioning systems
that do not require pressure independent airflow control. If your system requires pressure independent control of
the airflow, see the “OE511 - Pressure Independent Round Damper” data sheet for the correct specifications.

All Round Dampers are tested and certified in accordance with ARI standard 880. An ARI label is affixed to all
units.

Mounting

The Round Damper assembly should be mounted according to standard duct installation practices with airflow
direction as shown in the illustration above. After installation of the Round Damper in the ductwork, insulation
should be applied around any remaining uninsulated surface on the air valve inlet and outlet. The Round Damper
should be mounted so the control enclosure is positioned to the left or right side of the ductwork with the control
enclosure in a vertical plane. Do not mount the Round Damper Assembly with the control enclosure on the top or
bottom of the ductwork. Adequate clearance should be maintained between the control panel and any obstruc­tion to allow for removal of the control panel cover and access to the controls.

Technical Data

OE510-XX-VAV Pressure Dependent

VAV Controller: Air Damper Construction:

Supply Power 24 Volt AC Damper Body 24 Ga. Galv. Steel
Power Consumption 12 VA Maximum Damper Blade Round -18 Ga. Galv. Steel
Operating Temperature

35°F to 125°F

Damper Bearings Oil Impregnated Bronze
Operating Humidity 90% RH Non-Condensing Damper Seal
Communications RS-485 - 9600 Baud Leakage Less Than 1% @ 3” SP

Insulation ½” Foil Faced Fiberglass

Inputs: Dimensions:

Room Temperature Sensor
Setpoint Adjustment OE520-06 (6”) 19.00 5.88 9.38
Actuator Position Feedback OE520-08 (8”) 19.00 7.88 11.38

Outputs:

Expansion Port for Auxiliary Relay Board OE520-14 (14”) 22.00 13.88 17.38
Actuator Port for Connection to Damper Actuator OE520-16 (16”) 22.00 15.88 19.38

WattMaster reserves the right to change specifications without notice

Three Year Warranty On Electronic Components One Year Warranty On Air Damper

Air Damper Model “A” “B” “C”

OE520-10 (10”) 19.00 9.88 13.38

OE520-12 (12”) 22.00 11.88 15.38

Round Damper

Volara® Type A Gasket

Form: WM-OE510-RndDmpr-Sub-01A Page 1 of 2

VAV System

OE510-XX-VAV – Pressure

Dependent Round Damper

Round Damper Sizing

Use a load program to determine the peak
load for each zone. These calculations will be
used to select Round Damper sizes.

The WMVAV System utilizes a typical low
pressure duct design. To reduce noise prob­lems, duct pressures should not exceed 1”
W.C.

Primary trunk ducts used with WMVAV sys­tems should not be “undersized”. This is es­pecially true of “pressure dependent” sys­tems. With larger trunk ducts, it is easier to
assure relatively constant pressure to each
Round Damper. Runs should be as short as
possible, and the trunk duct system kept as
symmetrical as possible to facilitate system
balancing. Wherever possible, run the trunk
ducts above corridors and locate the Round
Dampers above corridors to reduce the noise
in the space and facilitate service of the
valves. Trunk ducts should be sized for no
more than 0.1” W.C. drop per 100 ft. of duct,
and a maximum duct velocity of 2000 FPM.

Using the maximum acceptable velocity for a branch duct (typi­cally 1000-1500 FPM for minimal noise), find the smallest
Round Damper that will deliver the required CFM as determined
by the load program. Locate the branch velocity used in the
duct design program in the left hand column of the Round
Damper Selection Data table. Move across the table and find
the Round Damper, which will provide the acceptable CFM to
meet the zone airflow requirements.

Note: Compare the Round Damper size selected against

the duct size to determine if the next size up or
down will provide acceptable performance without
requiring a transition fitting.

Round Damper Selection Data

Round Damper Round Duct Size

(Area Ft

Velocity Through Round Damper

FPM

500

750

1000

1250

1500

1750

2000

2

)

WattMaster reserves the right to change specifications without notice

6”

(0.188)

94

(0.01)

141

(0.03)

188

(0.05)

235

(0.07)

282

(0.09)

329

(0.12)

376

(0.15)

OE510-XX-VAV Pressure Dependent

8”

(0.338)

10”

(0.532)

12”

(0.769)

Airflow Through Round Damper - CFM

(ΔP

inches W.C. w/ Damper Full Open)

S

169

(0.01)

254

(0.02)

338

(0.03)

423

(0.04)

507

(0.06)

592

(0.08)

676

(0.10)

266

(0.01)

399

(0.01)

532

(0.02)

665

(0.03)

798

(0.04)

931

(0.06)

1064

(0.07)

385

(0.01)

577

(0.02)

769

(0.03)

961

(0.04)

1154

(0.05)

1346

(0.06)

1538

(0.07)

Round Damper

14”

(1.050)

525

(0.01)

788

(0.01)

1050

(0.02)

1313

(0.03)

1575

0.04)
1838

(0.05)

2100

(0.07)

16”

(1.375)

687

(0.01)

1031

(0.01)

1375

(0.01)

1718

(0.02)

2062

(0.03)

2405

(0.04)

2749

(0.05)

Form: WM-OE510-RndDmpr-Sub-01A Page 2 of 2

VAV System

Description

The OE511-XX-VAV Pressure Independ­ent Round Damper consists of a round air
valve, MG320-VAV zone controller, OE282
damper actuator, airflow sensor and a

1/2" Foil Faced
Insulation

OE511-XX-VAV–Pressure

Independent Round Damper

Round Damper
Blade Assembly

Zone Controller

crossflow air pickup probe. An optional
auxiliary relay board (OE321) is available
for control of auxiliary heat and/or control
of series or parallel flow fan terminal units.

W

A

IR

LO

F

F
LO

IR

A

W

The MG320-VAV Zone Controller is micro­processor based and communicates with
the HVAC Unit Controller on the WMVAV
communications loop. The VAV Controller
monitors the space temperature and allo-

Actuator

cates the proper airflow into its assigned
space to achieve the desired comfort and
ventilation levels.

Control Enclosure
(Cover Removed)

The Pressure Independent Round Damper
is used in systems that require pressure
independent airflow control. If your system
does not require pressure independent
control, please see the “OE510 Pressure
Dependent Round Damper” data sheet for
the correct specifications.

All Round Dampers are tested and certified in accordance with ARI standard 880. An ARI label is affixed to all
units.

Mounting

The Round Damper assembly should be mounted according to standard duct installation practices with airflow
direction as shown in the illustration above. After installation of the Round Damper in the ductwork, insulation
should be applied around any remaining uninsulated surface on the air valve inlet and outlet. The Round Damper
should be mounted so the control enclosure is positioned to the left or right side of the ductwork with the control
enclosure in a vertical plane. Do not mount the Round Damper with the control enclosure on the top or bottom of
the ductwork. Adequate clearance should be maintained between the control panel and any obstruction to allow
for removal of the control panel cover and access to the controls.

Technical Data

VAV Controller: Air Damper Construction:

Supply Power 24 Volt AC Damper Body 24 Ga. Galv. Steel
Power Consumption 12 VA Maximum Damper Blade Round -18 Ga. Galv. Steel
Operating Temperature
Operating Humidity 90% RH Non-Condensing Damper Seal
Communications RS-485 - 9600 Baud Leakage Less Than 1% @ 3” SP

35°F to 125°F

Damper Bearings Oil Impregnated Bronze

Insulation ½” Foil Faced Fiberglass

Inputs: Dimensions:

Zone Temperature Sensor
Setpoint Adjustment OE521-06 (6”) 19.00 5.88 9.38

Actuator Position Feedback OE521-08 (8”) 19.00 7.88 11.38
Air Flow Sensor OE521-10 (10”) 19.00 9.88 13.38

Outputs:

Expansion Port for Auxiliary Relay Board OE521-14 (14”) 22.00 13.88 17.38

WattMaster reserves the right to change specifications without notice

Three Year Warranty On Electronic Components One Year Warranty On Air Damper

Air Damper Model “A” “B” “C”

OE521-12 (12”) 22.00 11.88 15.38

OE521-16 (16”) 22.00 15.88 19.38

OE511-XX-VAV Pressure Independent

Round Damper

Volara® Type A Gasket

Form: WM-OE511-RndDmpr-Sub-01A Page 1 of 2

VAV System

Round Damper Sizing

Use a load program to determine the peak
load for each zone. These calculations will
be used in selecting the appropriate zone
damper sizes.

The WMVAV System utilizes a typical low
pressure duct design. To reduce noise
problems, duct pressures should not ex­ceed 1” W.C.

Primary trunk ducts used with WMVAV sys­tems should not be “undersized”. This is
especially true of “pressure dependent” sys­tems. With pressure independent systems
this is not as critical. With larger trunk ducts,
it is easier to assure relatively constant
pressure to each Round Damper. Runs
should be as short as possible, and the
trunk duct system kept as symmetrical as
possible to facilitate system balancing.
Wherever possible, run the trunk ducts
above corridors and locate the Round
Dampers above corridors to reduce the
noise in the space and facilitate service of
the valves. Trunk ducts should be sized for
no more than 0.1” W.C. drop per 100 ft. of
duct, and a maximum duct velocity of 2000
FPM.

OE511-XX-VAV–Pressure

Independent Round Damper

With pressure independent systems it is possible to exceed this
rule by up to 50%. However it is advised that unless you are ex­perienced with VAV duct design the 2000 FPM rule should be
used. Using the maximum acceptable velocity for a branch duct
(typically 1000-1500 FPM for minimal noise), find the smallest
damper that will deliver the required CFM as determined by the
load program.

Locate the branch velocity used in the duct design program in
the left hand column of the Round Damper Selection Data table.
Move across the table and find the damper, which will provide
the acceptable CFM to meet the zone airflow requirements.

Note: Compare the Round Damper size selected against

the duct size to determine if the next size up or down
will provide acceptable performance without requir­ing a transition fitting.

Round Damper Selection Data

Round Damper Round Duct Size

(Area Ft

CFM @ 1” Velocity Pressure
(Air Flow Probe “K” Factor)

Velocity Through Round Damper

FPM

500

750

1000

1250

1500

1750

2000

2

)

WattMaster reserves the right to change specifications without notice

OE511-XX-VAV Pressure Independent

Round Damper

6”

(0.188)

474 950 1417 2120 2908 3700

8”

(0.338)

10”

(0.532)

12”

(0.769)

14”

(1.050)

16”

(1.375)

Airflow Through Round Damper - CFM

(ΔP

inches W.C. w/ Air Damper Full Open)

S

94

(0.01)

141

(0.03)

188

(0.05)

235

(0.07)

282

(0.09)

329

(0.12)

376

(0.15)

169

(0.01)

254

(0.02)

338

(0.03)

423

(0.04)

507

(0.06)

592

(0.08)

676

(0.10)

266

(0.01)

399

(0.01)

532

(0.02)

665

(0.03)

798

(0.04)

931

(0.06)

1064

(0.07)

385

(0.01)

577

(0.02)

769

(0.03)

961

(0.04)

1154

(0.05)

1346

(0.06)

1538

(0.07)

525

(0.01)

788

(0.01)

1050

(0.02)

1313

(0.03)

1575

0.04)
1838

(0.05)

2100

(0.07)

687

(0.01)

1031

(0.01)

1375

(0.01)

1718

(0.02)

2062

(0.03)

2405

(0.04)

2749

(0.05)

Form: WM-OE511-RndDmpr-Sub-01A Page 2 of 2

VAV System

r

OE255 & OE256 – CO2Senso

Description

The OE255 & OE256 CO2 Sensors are
used in conjunction with various other
WattMaster controllers to monitor and
control CO

levels in the building envi-

2

ronment.
Some typical applications are:

• Controlling ventilation in a building

where the occupancy varies fre­quently

• Controlling ventilation to ensure ex-

cess outside air is not causing en­ergy waste

• To ensure good air distribution

throughout building zones

The OE256 is used for monitoring room

levels and is designed for wall

CO

2

mounting in the required space. The
OE255 is designed to be mounted on the
return air duct of the HVAC unit and in­cludes a aspiration box with a probe that
samples air from the return air stream.

3-1/4"

1-1/8"

5-5/8"

™

Both models use the patented dual beam Absorption Infrared

technology. This technology provides a very accu­rate and stable sensor that is guaranteed to maintain its accuracy for a minimum of 5 years between calibrations.
The OE255 & OE256 CO

Sensors accuracy is ± 50 ppm @1000 ppm. Annual drift is 10 ppm per year. Repeat-

2

ability is ±20 ppm.

Application

Both models utilize a sub-base mounting plate with terminal blocks providing for quick and easy mounting and
wiring. The OE256 wall mounted sensor’s sub-base is compatible with standard junction boxes for ease of wall
mounting and wiring. A locking screw secures the whole assembly to the wall. The OE255 duct mounted sensor
has a enclosure with pickup probe assembly that is mounted to the ductwork. The standard sensor sub-base and
housing is then attached to the enclosure to provide for secure mounting of the sensor. The OE255 also is sup­plied with a clear enclosure cover to seal the sensor from dust and dirt.

Technical Data OE255 & OE256 – CO2 Sensor

Input Power 18-30 VAC RMS, 50/60 Hz

Half Wave Rectified
Operating Temperature
Sample Method Diffusion Or Flow –through

Sensitivity
Analog Output 0-10 VDC

One Year Warranty WattMaster reserves the right to change specifications without notice

32°F to 122°F

50-100 ml/min

±10 ppm

4-20 mA

Power Consumption 1.75 VA Maximum Average

2.75 VA Peak Power
Operating Humidity 0-95% RH Non-Condensing
Measurement Range 0 to 2000 ppm

(Adjustable to 10,000 ppm).
Resolution
Agency Certification FCC Part 15 Class B

±1 ppm

Form: WMS-OE255-6-CO2Sensor-1B.doc Page 1 of 3

VAV System

r

OE255 & OE256 – CO2Senso

2-7/8''

2-3/8''

2-3/8''

4-1/4''

3-3/4''

4. Relay Common

5. Relay Norm Closed

6. 4-20mA Output

3. Relay Norm Open

1. - Not Used

2. - Not Used

7. Signal Ground

8. 0-10V Output

Pin Designations

1. AC+/DC+

2. AC/GND

CO2 Sensor Sub-base

(Used On OE255 & OE256)

Pin Designations

3-1/2''

3-1/4''

5-1/16''

4-1/4''

8''

Aspiration Tube

1-1/8''

7''

Shown W/ Cover Removed

6-1/2''

1-1/16'' and 1-1/8''
Knockouts

7/8'' Knockouts

Aspiration Box

(Included & Used With OE255 Only)

Form: WMS-OE255-6-CO2Sensor-1B.doc Page 2 of 3

VAV System

r

Sensor
Mounting Base

OE255 & OE256 – CO2 Senso

Clear Cover

Sensor & Sub-base

CO

2

Aspiration Tube

OE255 – Duct Mounted CO2 Sensor Assembly

For optimum sensing,
the 3 holes located on
the inlet tube must
face the duct airflow.

OE255 – Duct Mounted CO2 Sensor Mounting

Form: WMS-OE255-6-CO2Sensor-1B.doc Page 3 of 3

VAV System

r

Description

The OE258 Building Static Pressure Sen­sor is used to sense building pr essure in
applications where monitoring of the
building static pressure is required to in­sure the building maintains the proper air
pressurization.

OE258 – Building Pressure Senso

0.95

MODEL 265

0.156 DIA. HOLE
TYP. 2 PL.

The OE258 Building Pressure Sensor
case is molded from fire retardant glass
filled polyester. The sensor utilizes a ten­sioned stainless steel diaphragm and in­sulated stainless steel electrode. This
arrangement allows up to 10 PSI over­pressure without damage to the unit. T he
sensor provides a 0.0 to 5.0 VDC output
in response to a –0.25 to +0.25 inch WC
pressure differential. Ac curacy is ± 1% of
full scale of the sensor.

For easy wiring the OE258 Building Static
Pressure Sensor has (3) 6- 32 screw ter­minal wiring connectors. The sensor has
(2) ¼” barbed fittings provided for the
connection of tubing to the high and low
pressure ports.

The OE258 Static Pressure Sensor is
designed to be mounted to a flat surf ace
by means of the (2) 0.156 diam eter holes
provided in the sensor casing. For accu­rate readings the sensor must be
mounted in a vertical position.

2.74

HIGH

setra

LOW

-

0.95

+

1.89

3.16

+

+

1.64

Technical Data OE258 - Building Static

Pressure Sensor

Operating Pressure
Range

Operating Temp
Circuit 3 Wire Non-repeatability
Accuracy

Three Year Warranty WattMaster reserves the right to change specifications without notice

Form: WMS-OE258-6-BuildingPressureSensor-1B.doc Page 1 of 1

-0.25” WC to +0.25” WC
Pressure Differential

0°F to 150°F

± 1% of full scale

Power Input
Signal Output
Hysteresis

Weight 3 ounces

± 0.1% of full scale

± 0.05% of full scale

9-30 VDC

0 to 5 VDC

VAV System

r

Description

The OE282 Damper Actuator is a shaft
mounted, floating point control actuator.
Actuators are 24VAC/24VDC with a 10K
ohm feedback signal for position monitor­ing. Wiring connection to the actuator is by
means of a modular phone cable connector
located on the actuator cover. The actuator
is rated for 35 in-lb of torque. All actuators
are electronically protected against over­load. The angle of rotation is mechanically
limited to 95°. When the end position of the
actuator or damper is reached, the actuator
automatically stops. For adjustment pur­poses, the gears can be manually disen­gaged by pushing the manual override
button on the actuator cover.

Applications

The OE282 Damper Actuator is used to
provide control of air volume dampers in
the WattMaster VAV systems. It is gener­ally used in conjunction with an MG3204­00-VABOX controller board.

OE282 - Damper Actuato

Mounting

The Damper Actuator is designed to fit ei­ther a 3/8” diameter or 1/2” diameter
damper shaft. T he Damper Actuator slides
over the damper shaft through its integral
U-bolt clamp and is then tightened in place
using the 2 nuts provided on the U-bolt
clamp.

Technical Data OE282

Damper Actuator

Power Supply
Life Cycle Rating 2.5 Million Cycles with Mechanical Stops
Power Consumption 3 VA Maximum Power Connection RJ-11 Modular Jack
Operating Temp
Operating Humidity 5 to 95% RH Non-Condensing Quality Standard ISO 9001
Overload Protection

Feedback Signal 10K ohm 1W Potentiometer Torque Minimum 35 in-lb
Running Time 80-110 Seconds. Weight 1.2 lb.

Three Year Warranty WattMaster reserves the right to change specifications without notice

24VAC ± 20% 50/60HZ

-22°F to 122°F

Electronic Throughout 0 to 95°
Rotation

Angle of Rotation

Servicing Maintenance Free

Agency Listings UL873 listed

Max. 95°, Adjustable

CSA 4813 02 Certified

Form: WMS-OE282-DamperActuator-1B.doc Page 1 of 1

OE271 - For

Applications

0-5” H O Pressure Range - 5 VDC Operation

2

Minimum Typical Maximum

Full Scale Output
(Positive Pressure)

Null Offset

Span*

Non-Linearity

Hystereisis And Repeatability

Temperature Error

Null +10 To 40 C°°
Span +10 To 40 C°°

Stability (1 Year)

Supply Voltage (Vs)

Common Mode Pressure

Pressure Overload

Positive Pressure (Hi Side)
Negative Pressure (Lo Side)

Burst Pressure

Positive Pressure (Hi Side)
Negative Pressure (Lo Side)

*Span Is The Algebraic Difference Between End Points (Null OffsetAnd Full Scale Output)

3.92 VDC

0.17 VDC 0.2-0.3 VDC 0.33 VDC

3.59 VDC 3.91 VDC

4.75 VDC 5.0 VDC

Requiring 0-5” H O Pressure Range

3.95-4.05 VDC

3.65-3.85 VDC

±0.3 % Span ±0.5 % Span

±0.03 % Span

±1.0 % Span
±1.0 % Span

±0.5 % Span

Airflow Sensor

2

4.08 VDC

±0.05 % Span

±1.5 % Span
±1.5 % Span

8.0 VDC

15 PSI

25“ H O

2

15“ H O

2

50“ H O

2

25“ H O

2

1.29"

2.94"

0.15"

2.50"

2.20"

IN (Red)

GND

OUT

IN

UP

OE271

S.P. Sensor

(-)LO

Top View

12.0" APPROX.

OUT (Black)

GND (Green)

0.15" DIA.

0.60"

0.200" (3/16" Tubing Conn.)

0.125" (1/8" Tubing Conn.)

Warning!

The plastic housing on the sensor is electrically
conductive. Avoid contact with any electrical components.
It is acceptable to mount the sensor on grounded sheet
metal such as ductwork, electrical panels, etc.

Warning!

Use extreme care when mounting the sensor to avoid
damage to the plastic housing. Do not overtighten the
mounting screws! Do not use mounting screws which are
too large for the holes!

General Notes

Caution:

1.) The Airflow Sensor Should Be Mounted In
A Vertical Position As Shown With Arrow Pointing
Up. ( Tubing Connections Pointing Down). If This
Mounting Position Is Not Possible In Your
Application, It May Be Mounted In A Horizontal
Position. When Mounted In A Horizontal Position
Accuracy Will Be Affected By Approximately 2% Full
Scale Null Shift Due To Diaphragm Gravity Effect
Error.

Duct Static Pressure Sensor Applications
Mounting Information

When The OE271 Is Used As A Duct

Pressure Sensor

Ductwork Near The Static Pressure Pickup Tube. If
The Sensor Is Mounted In This Manner, Away
From The Controller, The Modular Plug Must Be
Cut Off And 3-conductor 24 Gauge Minimum Wire
Must Be Butt Spliced Between The Sensor And
The Modular Plug To Extend The Sensor Wire
Length. Total Wire Length Should Not Exceed
100Ft. If Desired The Sensor May Also Be Located
Near The Controller, With The Modular Plug On
The Sensor Directly Connected To The Mating
Controller Jack. When This Method Is Used Tubing
Must Be Run From The Sensor To The Static
Pressure Pickup Tube. Tubing Should Not Exceed
250 Ft. And Must Be Continuous Without Any
Splices.

It May Be Mounted To The

0.35"

2.)All Wiring To Be In Accordance With Local And
National Electrical Codes And Specifications.

VAV Pressure Independent Airflow Sensor
Applications Mounting Information

Static

When The OE271 Is Used As An Airflow
For VAV Applications It Should Be Mounted In The
VAV Box Control Enclosure Near The Box
Controller Board. The Modular Plug should be
Connected To The VAV Controller Board
Connection. Tubing Must Be Run From The
Sensor to The Airflow Pickup Probe Tubing
Connection.

G-OE271TRAN1.CDR

DATE:

PAGE

1

FILENAME

08/19/08

1.95"

Side View

Sensor

JOB NAME

DRAWN BY:

DESCRIPTION:

OE271

Pressure Sensor

0.55"

1.00"

B. CREWS

OE230 (6" Probe) & OE231 (12" Probe)

Caution!

The Duct Sensor Is Used For Sensing Supply
Or Return Air Temperatures. Location Of The
Sensors Is Very Important In Order To Obtain
Accurate Temperature Readings. The
Following Recommendations Should Be
Followed:

Supply Air

When Used As A Supply Air Sensor The
Sensor Should Be Mounted In The Supply Air
Duct As Close To The HVAC Unit As Possible
And Upstream Of The Bypass Damper (If
Used) For Best Results. For Best Accuracy,
Apply Insulation On The Outside Of The
Ductwork Over The Sensor. This Will Help
Thermal Gradients From Affecting The Sensor.

Return Air

When Used As A Return Air Sensor The
Sensor Should Be Mounted In The Return Air
Duct As Close To The HVAC Unit As Possible
And Upstream Of The Bypass Damper (If
Used) For Best Results. For Best Accuracy,
Apply Insulation On The Outside Of The
Ductwork Over The Sensor. This Will Help
Thermal Gradients From Affecting The Sensor.

See The Systems Installation And Operation
Manual For Other Design Considerations And
Recommendations Regarding Duct
Temperature Sensor Location.

Duct Temperature Sensors

Thread
Together

5-1/2" (OE230)

11-1/2" (OE231)

Leads Are Non-polarized.
Butt Splice Leads To 24 Gauge
Wire Minimum. Connect Leads
To "Analog In" And "Ground"
At Controller.

4.0"

3/4"

Mounting Plate

1/4" Hex Head Sheet Metal Screws

Mounting Plate

Gasket

Adhesive Backed Drill Guide
Mounting Template

Duct Work

Temp Resistance* Voltage

F Ohms @ Input*

°

-10.............93333 ........4.620

-5...............80531 ........4.550

0 ...............69822 ........4.474

5 ...............60552 ........4.390

10..............52500 ........4.297

15..............45902 ........4.200

20..............40147 ........4.095

25..............35165 ........3.982

30..............30805 ........3.862

35..............27140 ........3.737

40..............23874 ........3.605

*Chart Notes:

1. Use the resistance column to check the thermistor sensor while disconnected from the controllers (not powered).

2. Use the voltage column to check sensors while connected to powered controllers. Read voltage with meter set on DC volts.
Place the "-"(minus) lead on GND terminal and the "+"(plus) lead on the sensor input terminal being investigated. If the voltage
is above 5.08 VDC, the sensor or wiring is "open." If the voltage is less than 0.05 VDC, the sensor or wiring is shorted.

Notes:

1.)All Wiring To Be In Accordance With
Local And National Electrical Codes
And Specifications.

Drill 5/16" Hole In Ductwork For Probe

Temperature Sensor Resistance/Voltage Chart

Temp Resistance* Voltage

F Ohms @ Input*°

45..............21094 ........3.470

50..............18655 ........3.330

52..............17799 ........3.275

54..............16956 ........3.217

56..............16164 ........3.160

58..............15385 ........3.100

60..............14681 ........3.042

62..............14014 ........2.985

64..............13382 ........2.927

66..............12758 ........2.867

68..............12191 ........2.810

Temp Resistance* Voltage

F Ohms @ Input*°

69..............11906 ........2.780

70..............11652 ........2.752

71..............11379 ........2.722

72..............11136 ........2.695

73..............10878 ........2.665

74..............10625 ........2.635

75..............10398 ........2.607

76..............10158 ........2.570

78..............9711 ..........2.520

80..............9302 ..........2.465

82..............8893 ..........2.407

Temp Resistance* Voltage

F Ohms @ Input*

°

84..............8514 ..........2.352

86..............8153 ..........2.297

88..............7805 ..........2.242

90..............7472 ..........2.187

95..............6716 ..........2.055

100............6047 ..........1.927

105............5453 ..........1.805

110............4923 ..........1.687

115............4449 ..........1.575

120............4030 ..........1.469

125............3656 ..........1.369

JOB NAME

FILENAME

G-DUCSENS1.CDR

DATE:

04/25/02

PAGE

1

DESCRIPTION:

OE230 & OE231

Duct Temperature Sensor

DRAWN BY:

B. CREWS

Static Pressure Pickup Tube OE290

Connect This End Of Tubing To “Hi”
Port Of Pressure Sensor

1/4“ O.D. X 3/16” I.D. x 14” Long - Fire Rated Tubing
Slide Over 1/4“ Barb Fitting
Tubing Not To Exceed 250 Ft. Length.
Do Not Splice Tubing.

1/8“ MPT
Threaded Pipe

Thread
Together

1/4“ Barb Fitting

3/4"

2-3/4“

1/4" Hex Head Sheet Metal Screws

Drill 5/16" Hole In Ductwork For Probe

Mounting Plate

Mounting Plate

Gasket

Adhesive Backed Drill Guide
Mounting Template

Duct Work

4.0"

Caution!

In Order To Obtain Accurate Static Pressure Readings
The Static pressure Pickup Probe Should Be Mounted
Per The Following Recommendations:

1.)The Probe Should Be Mounted In a Straight Section
Of Ductwork Approx. 2/3 The Length Of the Supply Duct,
Downstream Of The HVAC Unit.

2.)The Probe Should Not Be Mounted Less Than 3 Duct
Diameters Downstream Or Not Less Than 2 Duct
Diameters Upstream Of Any Elbow or Takeoff.

See The Systems Installation And Operation Manual For
Other Design Considerations And Recommendations
Regarding Static Pressure Pickup Tube Location.

Notes:

1.)The Static Probe(OE290) Is Supplied With A 14“
Length Of Tubing For Connection To The Static
Pressure Sensor. The Static Pressure Sensor
(OE271) Is Designed To Be Mounted Adjacent To The
Location Where The Static Pickup Tube Is Mounted
And Wired Back To The Controller Board. The Static
Pressure Sensor Can Also Be Mounted Close To The
Controller Board And Tubing (By Others) Routed
From The Sensor To The Static Pickup Probe. Be
Sure Not To Kink The Tubing Between The Static
Pickup Probe And The Static Pressure Sensor.

FILENAME

G-SPUTUBE1.CDR

04/29/02

DATE:

PAGE

1

Static Pressure Pickup Tube

JOB NAME

DRAWN BY:

DESCRIPTION:

OE290

B. CREWS

Gasketed Cover

CAUTION!
See Note 3

2.88“

Cover
Mounting
Screw

- Typ.

2.25“

0.19 Dia.
Hole Typ.

3.19“

Closure Plug

CAUTION!
See Note 2

Mounting Bar
& Screws - Typ.

4.63“

6.00

3.50“

1/2

Wiring Terminal.
Connect Wiring
To Controller Using
24 Gauge Minimum
Wire. Only 2
Conductors are
Required.

Sensor Tube

CAUTION!
See Note 1

Closure Plug

CAUTION!
See Note 2

1.63"

Front View Side View Back View

See Note #1

Incorrect

Correct

Sensor Mounting

Postion

Outside Air Relative Humidity Sensor OE265-03

*Chart Notes:

1. Be sure that +24VDC power is being supplied to the sensor. For voltage measurement s
meter to DC Volts. C
board that is connected to the sensor. The input on the controller board must have a 250 ohm
resistor to ground installed and have it’s associated pull-up resistor removed for the sensor to
function properly. For current measurement set the ammeter to DC Amps and connect the
meter’s lead in series with the T1 terminal on the sensor. Use an accurate humidity
measurement device to determine RH (relative humidity) such as an aspirating psychrometer.
Use the Output VDC column to read the Output Voltage or the Output mA column to read the
Output Amperage corresponding with the RH percentage measured with the psychrometer. If the
measured voltage or amperage is within 3% of what is listed for the corresponding RH, then the
sensor is functioning properly.

Notes:

1.)The Outside Air Sensor Must Be

Mounted In A Horizontal Position As
Shown (Sensor Tube Pointing Left
or Right with Slots Pointing Down).

Water Must Not Be Allowed To
Stand In Sensor Tube. Rainwater
Will Damage Sensor.

Be Located Where It Will Not Be
Affected By Direct Sunlight Or Heat
Producing Equipment. If Possible
Mount Under Roof Eave Or Similar
Protected Location. If Sensor Is Not
Located As Specified, Erroneous
Outside Air Humidity Readings Will
Result.

onnect the meter between ground and the input terminal on the controller

2.)Unused Conduit Opening(s) Must
Have Closure Plugs Installed And Must
Be Coated with Sealing Compound To
Provide Raintight Seal. Rainwater Will

Damage Sensor!

Sensor Must

3.)Gasket Must Be Installed Under Cover
Plate To Provide Raintight Seal.

Rainwater Will Damage Sensor!

4.)All Wiring To Be In Accordance With
Local And National Electrical Codes
And Specifications.

et the

Humidity Sensor Current/Voltage Chart

RH Output* Output

%

0 ...............4.00 ...........1.00

5 ...............4.80 ...........1.20

10..............5.60 ...........1.40

15..............6.40 ...........1.60

20..............7.20 ...........1.80

25..............8.00 ...........2.00

30..............8.80 ...........2.20

35..............9.60 ...........2.40

40..............10.40 .........2.60

45..............11.20 .........2.80

50..............12.00 .........3.00

mA VDC*

FILENAME

G-OA-HUMID1.CDR

DATE:

05/14/01

PAGE

1

Outside Air Humidity Sensor

RH Output* Output

% mA VDC*

55..............12.80 .........3.20

60..............13.60 .........3.40

65..............14.40 .........3.60

70..............15.20 .........3.80

75..............16.00 .........4.00

80..............16.80 .........4.20

85..............17.60 .........4.40

90..............18.40 .........4.60

95..............19.20 .........4.80

100............20.00......... 5.00

JOB NAME

DRAWN BY:

DESCRIPTION:

OE265-03

B. CREWS

VAV System

Description

The OE265-06 Wall Mounted Humidistat
is used with the WMVAV controller to initi­ate dehumidification mode when the rela­tive humidity rises above the user adjust­able setpoint.

The Wall Mounted Humidistat is adjustable
for relative humidity between 10% to 90%
with a differential relative humidity of 5%.

OE265-06 – Wall Mounted

Humidistat

2.88"

1.63”

The electrical switch on the Humidstat is a
snap-acting SPDT type. The switch is rated

% Relative Humidity

40 60 80

20

at 8 Amps resistive load and 60 VA pilot
duty load at 24 VAC.

3.31”

4.38”

The Humidistat is enclosed in an attractive
beige plastic housing with a removable
cover. The cover face is of brushed bronze
with relative humidity markings indicating
relative humidity setpoints between 10% to
90%. A removable dial is provided for the
adjustment of the relative humidity set­point. The Humidistat is also provided with

Mounting Holes
In Humidistat Base

a blank cover plate to facilitate tamper
proof installations. The external setpoint
cover plate is first removed and then the
blank cover plate is installed. An Allen
screw and 5/64” Allen wrench is also pro­vided to complete the tamper proof hard­ware..

Six inch long color coded leads are pro­vided on the back of the Humidistat base
for wiring connections. A green grounding lead is provided for grounding requirements.

Mounting

The Humidistat can be mounted to a electrical handy box using the provided screws. It can also be mounted di­rectly to the wall if your wiring codes allow for mounting of 24 Volt devices without a handy box. Mounting screws
for direct wall mounting must be provided by others.

Technical Data

Humidity Sensing
Element

Control Dial Settings 10 to 90% RH Location NEMA 1 Indoor Locations Only
Differential 5% RH Housing Beige Plastic with Brushed Bronze Cover

Operating Humidity 5% to 95% RH Non-

Operating Temp

Three Year Warranty

Form: WMS-OE265-06-Humidistat-1A.doc Page 1 of 1

Nylon Ribbon Electrical Switch Snap acting SPDT Rated at 8 Amps

Connections 6” Long Color Coded Wire Leads with

condensing

40°F to 125°F

Weight 1 Lb.

WattMaster reserves the right to change specifications without notice

OE265-06 Wall Mounted Humidistat

Resistive Load. 60 VA Pilot Duty Load

Plate. Also includes Tamper Proof Cover

Plate and Tamper Resistant Hardware

Ground Wire

OE265-07 – Duct Mounted

VAV System

Description

The OE265-07 Duct Mounted
Humidistat is used with the
HVAC unit controller to initiate
dehumidification mode when the
relative humidity in the return air
duct rises above the user adjust­able setpoint. The Duct Mounted
Humidistat is designed to be
mounted on the side of the HVAC
unit return air duct.

The Duct Mounted Humidistat is
adjustable for relative humidity
setpoints between 15% to 95%.
The Duct Mounted Humidistat
has a relative humidity differential
of 5%.

The electrical switch on the Duct
Mounted Humidstat is of the
snap-acting SPDT type. The
switch is rated at 8 Amps resis­tive load and 345 VA pilot duty
load at 120 VAC.

4.75”

6.50”

3

0

2

0

1

% HUMIDITY

6

50

0

4

0

Humidistat

2.24"

0

7

0

8

0

9

0

1.25"

2.81"

The Humidistat is enclosed in a metal housing with a removable cover and duct mounting plate. The mounting
base plate face is labeled with relative humidity markings indicating relative humidity setpoints between 15% to
95%. A dial knob is provided for the adjustment of the relative humidity setpoint. The dial knob can be locked at
the setpoint position by tightening the dial lock screw to facilitate tamper proof installations.

Color coded wiring terminals are provided for wiring connections to the humidistat. A green grounding lead is
provided for grounding requirements.

Mounting

The Duct Mounted Humidistat is designed to be mounted on the side of the HVAC unit return air duct. 4 screws
are provided for mounting the humidistat to the return air duct. A mounting template is also provided to help lo­cate the mounting holes and the duct cut-out on the duct wall.

Technical Data

Humidity Sensing
Element

Control Dial Settings 15 to 95% RH Location NEMA 1 Indoor Locations Only
Differential 5% RH Housing Painted Metal
Operating Humidity 5% to 95% RH Non-

Operating Temp

Three Year Warranty

Nylon Ribbon Electrical Switch Snap acting SPDT Rated at 8 Amps

Connections Color Coded Wire Terminals with Ground

condensing

40°F to 125°F

Weight 1.5 Lb.

WattMaster reserves the right to change specifications without notice

OE265-07 Duct Mounted Humidistat

Resistive Load. 345 VA Pilot Duty Load

Terminal

Form: WMS-OE265-07-Humidistat-1A.doc Page 1 of 1

Gasketed Cover

CAUTION!
See Note3

2.88“

Cover
Mounting
Screw

- Typ.

2.25“

8.00“

0.19 Dia.
Hole Typ.

3.19“

Closure Plug

CAUTION!
See Note 2

4.63“

0.38“

Front View

Wiring Terminal.
Connect Wiring
To Controller Using
24 Gauge Minimum
Wire. Only 2 Conductors
are Required.

Side View

Return Air Relative Humidity Sensor OE265-04

Humidity Sensor Current/Voltage Chart

RH Output* Output

%

0 ...............4.00 ...........1.00

5 ...............4.80 ...........1.20

10..............5.60 ...........1.40

15..............6.40 ...........1.60

20..............7.20 ...........1.80

25..............8.00 ...........2.00

30..............8.80 ...........2.20

35..............9.60 ...........2.40

40..............10.40 .........2.60

45..............11.20 .........2.80

50..............12.00 .........3.00

*Chart Notes:

1. Be sure that +24VDC power is being supplied to the sensor. For voltage measurement s
meter to DC Volts. C
board that is connected to the sensor. The input on the controller board must have a 250 ohm
resistor to ground installed and have it’s associated pull-up resistor removed for the sensor to
function properly. For current measurement set the ammeter to DC Amps and connect the
meter’s lead in series with the T1 terminal on the sensor. Use an accurate humidity
measurement device to determine RH (relative humidity) such as an aspirating psychrometer.
Use the Output VDC column to read the Output Voltage or the Output mA column to read the
Output Amperage corresponding with the RH percentage measured with the psychrometer. If the
measured voltage or amperage is within 3% of what is listed for the corresponding RH, then the
sensor is functioning properly.

mA VDC*

onnect the meter between ground and the input terminal on the controller

RH Output* Output

% mA VDC*

55..............12.80 .........3.20

60..............13.60 .........3.40

65..............14.40 .........3.60

70..............15.20 .........3.80

75..............16.00 .........4.00

80..............16.80 .........4.20

85..............17.60 .........4.40

90..............18.40 .........4.60

95..............19.20 .........4.80

100............20.00......... 5.00

et the

3.50“

1/2

Back View

Mounting Sensor to Duct

Mounting Tab
& Screw - Typ.

See Note #1

Notes:

1.)The Sensor Should Be Mounted so
that the 8“ Probe is in the Center of
the Return Air Duct. It Should be
Mounted Away from Fans, Elbows,
Heating or Cooling Coils or Other
Equipment that Could Affect the
Measurement of Relative Humidity.
Also, the Sensor Should be
Mounted in an Area that Receives
Adequate Air Flow for Accurate
Operation. The Sensor may be
Mounted Horizontally or Vertically to
the Return Air Duct..

2.)Unused Conduit Opening(s) Must
Have Closure Plugs Installed to
Prevent Dust or Insects Infiltrating the
Sensor Electrical Box..

3.)TheSensor Probe Gasket Must Be
Installed Between the Back of the
Sensor Box and the Duct to Provide an
Airtight Seal.

4.)All Wiring To Be In Accordance With
Local And National Electrical Codes
And Specifications.

FILENAME

G-HUMSRIR1.CDR

DATE:

04/25/02

PAGE

1

Return Air Humidity Sensor

JOB NAME

DRAWN BY:

DESCRIPTION:

OE265-04

B. CREWS

3.23”

1.25"

OptionalCustomer
SuppliedHandibox

CoverMounting
1/16”AllenScrews

FrontView

WallMountRelativeHumiditySensor OE265-01

HumiditySensorCurrent/VoltageChart

RHOutput*Output

%

0...............4.00...........1.00

5...............4.80...........1.20

10..............5.60...........1.40

15..............6.40...........1.60

20..............7.20...........1.80

25..............8.00...........2.00

30..............8.80...........2.20

35..............9.60...........2.40

40..............10.40.........2.60

45..............11.20.........2.80

50..............12.00.........3.00

*ChartNotes:

1.Besurethat+24VDCpowerisbeingsuppliedtothesensor.For
voltagemeasurementsonnectthe
meterbetweengroundandtheinputterminalonthecontroller
boardthatisconnectedtothesensor.Theinputonthecontroller
boardmusthavea250ohmresistortogroundinstalledandhave
it’sassociatedpull-upresistorremovedforthesensortofunction
properly.ForcurrentmeasurementsettheammetertoDCAmps
andconnectthemeter’sleadinserieswiththeT1terminalonthe
sensor.Useanaccuratehumiditymeasurementdeviceto
determineRH(relativehumidity)suchasanaspirating
psychrometer.UsetheOutputVDCcolumntoreadtheOutput
VoltageortheOutputmAcolumntoreadtheOutputAmperage
correspondingwiththeRHpercentagemeasuredwiththe
psychrometer.Ifthemeasuredvoltageoramperageiswithin3%
ofwhatislistedforthecorrespondingRH,thenthesensoris
functioningproperly.

mAVDC*

etthemetertoDCVolts.C

RHOutput*Output

%mAVDC*

55..............12.80.........3.20

60..............13.60.........3.40

65..............14.40.........3.60

70..............15.20.........3.80

75..............16.00.........4.00

80..............16.80.........4.20

85..............17.60.........4.40

90..............18.40.........4.60

95..............19.20.........4.80

100............20.00.........5.00

SideView

TerminalsFor
ThermistorAnd/Or
MembraneSwitch
Option(N.O.Only)

SwitchPinsFor
MembraneSwitch
Option

Optional
Thermistor
Soldering
Connector
Pins

MountingDiagram

SeeNote1

Power
Supply
24VDC

4-20Ma
Signal

ToTemperatureInput
(WhenUsed)

CalibrationPotZero

HumiditySensingElement

TypicalWiringDiagram

SeeNote3

Notes:

1.)Thesensorisdesignedtobewall
mountedinroomswhereappearance
isimportant.Itmaybemounted
directlyondrywalloronanysingle
gangelectricaloutletboxwithno
adaptersrequired.Toggleboltsor
otherdirectwallmountscrewscanbe
usedwhereconduitisnotrequired.It
includesadetachablemountingplate.
Thecoverissecuredwithtamper­resistanthexscrews.Thesensor
shouldbemountedapproximatelyfive
feetabovethefloor,onaninteriorwall,
awayfromanyheatingorcooling
generatingdevices.Plugthewireway
holetopreventfalsereadingsbyair
draftswithinthewall.

2.)AllWiringToBeInAccordanceWith
LocalAndNationalElectricalCodes
AndSpecifications.

3.)TheseWiringInstructionsAre
TypicalForAllSensorApplications.
SeeControllerWiringDiagramsFor
DetailedWiringInstructionsand
TerminationsForYourSpecific
Application.

FILENAME

G-HUMSRWALL1.CDR

DATE:

012/18/02

PAGE

1

WallMountedHumiditySensor

JOBNAME

DRAWNBY:

DESCRIPTION:

OE265-01

B.CREWS

GasketedCover

CAUTION!
SeeNote3

3.00”

Cover
Mounting
Screw-Typ.

SensorTube

CAUTION!
SeeNote1

2.30”

MountingTab
&Screw-Typ.

ClosurePlug

CAUTION!
SeeNote2

2.70”

ClosurePlug

CAUTION!
SeeNote2

0.21"Dia.x0.73
Lg.Slot-Typ.

MountingTab
&Screws-Typ.

Incorrect

SeeNote#1

FrontView SideView

BackView

Incorrect

SensorMounting

OutsideAirSensor OE250

TemperatureSensorResistance/VoltageChart

TempResistance*Voltage

FOhms@Input*

°

-10.............93333........4.620

-5...............80531........4.550

0...............69822........4.474

5...............60552........4.390

10..............52500........4.297

15..............45902........4.200

20..............40147........4.095

25..............35165........3.982

30..............30805........3.862

35..............27140........3.737

40..............23874........3.605

*ChartNotes:

1.Usetheresistancecolumntocheckthethermistorsensorwhiledisconnectedfromthecontrollers(notpowered).

2.Usethevoltagecolumntochecksensorswhileconnectedtopoweredcontrollers.ReadvoltagewithmetersetonDC
volts.Placethe"-"(minus)leadonGNDterminalandthe"+"(plus)leadonthesensorinputterminalbeinginvestigated.If
thevoltageisabove5.08VDC,thenthesensororwiringis"open."Ifthevoltageislessthan0.05VDC,thesensoror
wiringisshorted.

TempResistance*Voltage

FOhms@Input*°

45..............21094........3.470

50..............18655........3.330

52..............17799........3.275

54..............16956........3.217

56..............16164........3.160

58..............15385........3.100

60..............14681........3.042

62..............14014........2.985

64..............13382........2.927

66..............12758........2.867

68..............12191........2.810

TempResistance*Voltage

FOhms@Input*°

69..............11906........2.780

70..............11652........2.752

71..............11379........2.722

72..............11136........2.695

73..............10878........2.665

74..............10625........2.635

75..............10398........2.607

76..............10158........2.570

78..............9711..........2.520

80..............9302..........2.465

82..............8893..........2.407

TempResistance*Voltage

FOhms@Input*

°

84..............8514..........2.352

86..............8153..........2.297

88..............7805..........2.242

90..............7472..........2.187

95..............6716..........2.055

100............6047..........1.927

105............5453..........1.805

110............4923..........1.687

115............4449..........1.575

120............4030..........1.469

Correct

Postion

Notes:

1.)TheOutsideAirSensorMustBe
MountedInAVerticalPositionAs
Shown(SensorTubePointing
Down).

WaterMustNotBe
AllowedToStandInSensor
Tube.RainwaterWillDamage
Sensor.

SensorMustBeLocated
WhereItWillNotBeAffectedBy
DirectSunlightOrHeatProducing
Equipment.IfPossibleMountUnder
RoofEaveOrSimilarProtected
Location.IfSensorIsNotLocated
AsSpecified,ErroneousOutsideAir
TemperatureReadingsWillResult.

2.)UnusedConduitOpening(s)Must
HaveClosurePlugsInstalledAndMust
BeCoatedwithSealingCompoundTo
ProvideRaintightSeal.WaterCan

DamageSensor!

3.)GasketMustBeInstalledUnderCover
PlateToProvideRaintightSeal.

RainwaterCanDamageSensor!

4.)AllWiringToBeInAccordanceWith
LocalAndNationalElectricalCodes
AndSpecifications.

FILENAME

G-OE250-OAS-PDWG.CDR

DATE:

PAGE

1

04/25/02

OutsideAirTemperatureSensor

JOBNAME

DRAWNBY:

DESCRIPTION:

OE250

B.CREWS

Butt Splice Wire Leads To Extend Wires To
Controller Terminals. Connect One Wire
Lead To Return Water Temperature Or
Supply Water Temperature Terminal At The
Controller As Required By Intended Use.
Secure Other Wire Lead To Ground
Terminal At The Controller. See Note 3.

Secure Sensor Element And Thermal
Mastic Strip To Pipe With Supplied
Wire Tie. Be Sure To Tighten Wire Tie
Snugly To Ensure Good Thermal Contact
Between Pipe And Sensing Element.

Sensing Element
(Supplied)

Install Sensing
Element With
Curved Face
Touching Pipe
Surface As Shown

Wire Tie
(Supplied)

Supply Or Return
Water Pipe. See Note1&2.

Important Note:
For Accurate Temperature
Readings
It Is Necessary To Place
Insulation Over The Sensor
After Installation. This
Prevents The Ambient
Temperature From Affecting
The Sensor. Insulation Should
Cover The Sensor And Extend
6“ to 12” Beyond Each End Of
The Sensor.

Temp Resistance* Voltage

F Ohms @ Input*

°

-10.............93333 ........4.620

-5...............80531 ........4.550

0 ...............69822 ........4.474

5 ...............60552 ........4.390

10..............52500 ........4.297

15..............45902 ........4.200

20..............40147 ........4.095

25..............35165 ........3.982

30..............30805 ........3.862

35..............27140 ........3.737

40..............23874 ........3.605

*Chart Notes:

1. Use the resistance column to check the thermistor sensor while disconnected from the controllers (not powered).

2. Use the voltage column to check sensors while connected to powered controllers. Read voltage with meter set on DC volts.
Place the "-"(minus) lead on GND terminal and the "+"(plus) lead on the sensor input terminal being investigated. If the voltage
is above 5.08 VDC, the sensor or wiring is "open." If the voltage is less than 0.05 VDC, the sensor or wiring is shorted.

Notes:

1.)Sensor Should Be Mounted At
Location Along Pipe Length
That Best Represents Desired
Temperature Reading.

2.)Sensing Element Shown
Mounted To Top Of Pipe. The
Sensor Element May Be Located

At Any Location Around Pipe.

3.)All Wiring To Be In Accordance
With Local And National Electrical
Codes And Specifications.

Thermal Mastic

Place Between Pipe
And Sensing Element. Pipe Should Be
Clean And Smooth To Provide Proper
Thermal Contact With Sensing Element.

Thermal Mastic Strip
(Supplied)

Temperature Sensor Resistance/Voltage Chart

Temp Resistance* Voltage

F Ohms @ Input*°

45..............21094 ........3.470

50..............18655 ........3.330

52..............17799 ........3.275

54..............16956 ........3.217

56..............16164 ........3.160

58..............15385 ........3.100

60..............14681 ........3.042

62..............14014 ........2.985

64..............13382 ........2.927

66..............12758 ........2.867

68..............12191 ........2.810

Temp Resistance* Voltage

F Ohms @ Input*°

69..............11906 ........2.780

70..............11652 ........2.752

71..............11379 ........2.722

72..............11136 ........2.695

73..............10878 ........2.665

74..............10625 ........2.635

75..............10398 ........2.607

76..............10158 ........2.570

78..............9711 ..........2.520

80..............9302 ..........2.465

82..............8893 ..........2.407

FILENAME

G-OE233-W-TempSnsr1a.CDR

DATE: 01/03/05

PAGE

OE233 - Strap-On Temperature

1

Temp Resistance* Voltage

F Ohms @ Input*

°

84..............8514 ..........2.352

86..............8153 ..........2.297

88..............7805 ..........2.242

90..............7472 ..........2.187

95..............6716 ..........2.055

100............6047 ..........1.927

105............5453 ..........1.805

110............4923 ..........1.687

115............4449 ..........1.575

120............4030 ..........1.469

125............3656 ..........1.369

JOB NAME

CONTROLS

DRAWN BY:

DESCRIPTION:

B. CREWS

Sensor Kit Installation

GasketedCover

CAUTION!
SeeNote3

SensorWire
LeadsInside
WeatherProof
Enclosure

AmbientLight
SensorEye
ThreadedInto
WaterProof
Enclosure

3.00”

Cover
Mounting
Screw-Typ.

2.30”

FrontView SideView

AmbientLightSensor OE259

MountingTab
&Screw-Typ.

ClosurePlug

CAUTION!
SeeNote2

2.70”

0.21"Dia.x0.73
Lg.Slot-Typ.

MountingTab
&Screws-Typ.

ClosurePlug

CAUTION!
SeeNote2

BackView

TheAmbientLightSensorIsAPhotoSensitiveResistorHousedInAWaterProofEnclosure.
ItIsUsedInConjunctionWithTheOE310-21-LPLightingControllerToSenseThePresenceOrAbsence
OfAmbientLightForTheControlOfLightingCircuitsConnectedToTheController.TheSensor
HasAResistanceInExcessOf1MOhmsInDarknessAndRangesDownToLessThan1.5KOhmsIn
BrightLight.TheSensorWireConnectionsAreNon-Polarized.SeeTheOE310-21-LPWiringDiagramFor
CorrectWiringConnections.SeeNote1ForMountingLocationCautions.

Notes:

1.)TheAmbientLightSensorShould
BeInstalledOutdoorsWhereItCan
SenseTheAmbientLightLevel.Do
NotMountInAShadyAreaOrNear
AnyObstructionsThatWouldBlock
TheSensorEye.TheAmbientLight
SensorShouldBeMountedOnIts
SideInAHorizontalPositionSo
WaterWillNotPuddleAroundThe
SensorEye.

2.)UnusedConduitOpening(s)Must
HaveClosurePlugsInstalledAndMust
BeCoatedwithSealingCompoundTo
ProvideRaintightSeal.WaterCan

DamageSensor!

CorrectMountingPosition IncorrectMountingPosition

3.)GasketMustBeInstalledUnderCover
PlateToProvideRaintightSeal.

RainwaterCanDamageSensor!

4.)AllWiringToBeInAccordanceWith
LocalAndNationalElectricalCodes
AndSpecifications.

FILENAME

G-OE259-AmbLightSnsr1A.CDR

DATE: B.CREWS

PAGE

1

06/17/03

DESCRIPTION:

AmbientLightSensor

JOBNAME

DRAWNBY:

OE259