Raypak MVB 1003, Installation & Operating Instructions Manual

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Description
The CPC-3 is a microprocessor-based control that can simultaneously
control both draft and/or combustion air pressures. It typically controls
the operation and speed of an Auto-Draft® Inducer and/or a Universal
Blower to maintain draft or pressure set points. A third function provides
for an interface with a motorized louver. The CPC-3 also serves as the
safety interlock with associated burner controls.
Features
The CPC-3 has an 80 character vacuum florescent display that pro-
vides real-time system status and a soft touch keypad. All primary func-
tions can be programmed via distinct buttons, eliminating scrolling
through multiple screens. Included are four burner interlock terminal
strips that can interface with millivolt, 24 Volt, 115 Volt or 230 Volt burn-
er control circuits. The addition of up to three EXP-4E Expansion
Modules allows up to 16 separate burners to be interlocked. LED sta-
tus indicators on the face of the keypad show which interlocked burner
is calling for heat and when the CPC-3 safety circuits approve burner
operation. Additional LED's indicate venter limit(s) status and VFD
operation and fault status. Correct venter rotation can be determined by
display prompts and changed through a dip switch on the circuit board.
Included quick connect cabling completes all control circuit connections
between the CPC-3 and VFD. Features system fault diagnosis with
date and time reference for easy troubleshooting. Built in alarm alerts
building maintenance personnel if system faults. Alarm relay also
allows interface with building management system.
Programming Options
Draft Pressure Set Point, Combustion Air Pressure Set Point, Pre and
Post purge, Automatic or Manual operation. Combustion air modes of
operation include “Open” room pressure or ducted “Sealed” pressure
for sealed combustion burners.
Operation
Upon a call for heat from an interlocked burner the CPC-3 references
the vent system draft and/or combustion air pressure as measured by
the TD-Series Pressure Transducer(s) and activates the Variable
Frequency Drive. The VFD quickly speeds up the inducer/blower until
the vent system draft and/or combustion air set point is reached. When
the set point is reached the CPC-3 completes the circuit to the inter-
locked appliance allowing the normal firing sequence to resume.
Additional burner stages will create a momentary decrease in vent sys-
tem pressures, causing the inducer/blower to speed up to maintain the
set point. If sufficient natural draft and/or combustion air is present the
CPC-3 will deactivate the inducer/blower until it is needed. The inter-
locked burners will be deactivated if the vent system draft set point can-
not be maintained within 0.01" w.c. during predefined time limits based
on combustion air or draft modes of operation.
Material
The housing is made from 18 gauge aluminized steel and is painted
with an industrial powder coating. It has NEMA class 1 construction.
Listings
ETL Listed # 56826
UL508 - Standard for industrial control equipment
CSA C22.2 No. 14-95 - Standard for industrial control equipment
Warranty
2 year warranty
13.6"
15.5"
2.6"
SIDE VIEW FRONT VIEW
IMPORTANT: FOR “OPEN”
COMBUSTION AIR APPLICA-
TIONS WHERE THE CPC-3 IS
CONTROLLING THE MECH-
ANICAL ROOM PRESSURE.
The system will not maintain
room pressure unless doors
have sweeps and all obvious
voids to spaces outside the
mechanical room are sealed.
Tjernlund Products, Inc. • 1601 Ninth Street • White Bear Lake, MN 55110 • (651) 426-2993 • (800) 255-4208 • FAX (651) 426-9547 • www.tjernlund.com
P/N 8513016
FIGURE 8067002 7/26/04
+0.15 to -0.60 In WC / +37 to -159 Pa
0.0002 In WC / 0.05 Pa
32° to 122° F / 0° to 50° C
Combustion Air Range of Operation
Pressure Tolerance
Operating Temperature
+0.15 to -0.60 In WC / +37 to -159 Pa Inducer Range of Operation
Sensor Supply 4 each 24 VDC, 420 mA total
Control Signal 2 each 0 - 10 VDC, 10 mA each
Power Supply 95 - 265 VAC / 47 - 440 Hz / 0.5 Amp
General Purpose 20 A, 240 VAC
Alarm Relay 2 A, 125 VAC
CPC-3 CONTROLLER
Appliance / Pump / AUX Relays
Dimensions, H x W x D
Weight 9.5 lbs / 4.3 kg
15.5 x 13.6 x 2.6 in
394 x 345 x 66 mm
5 each 0 - 10 VDC, 0.25 mA each
1 Digital Input
1 Digital Output
Motor:
+0.10 to -0.10 In WC / +24 to -24 Pa
2 HP, 250 VAC
Open System:
Sealed System:
3.4 - 5.0 VDC, 24 mA max
3.4 - 5.0 VDC, 24 mA max
1 HP, 125 VAC
Sensor:
Drive:
115 / 208-230 / 50 - 60 Hz / 0.5 Amp
Submitt
Submitt
al Dat
al Dat
a Sheet
a Sheet
CPC-3 CONST
CPC-3 CONST
ANT
ANT
PRESSURE CONTROLLER
PRESSURE CONTROLLER