TJERNLUND COP2DB Installation Instructions Manual
Copyright © 2017, Tjernlund Products, Inc. All rights reserved P/N 8504208
OWNER INSTRUCTIONS, DO NOT DESTROY
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THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED, LICENSED
SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT AND
OPERATION OF THIS PRODUCT. READ THESE INSTRUCTIONS THOROUGHLY
BEFORE ATTEMPTING INSTALLATION OR OPERATION. FAILURE TO FOLLOW
THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION, ADJUSTMENT, SERVICE OR MAINTENANCE POSSIBLY RESULTING IN FIRE, ELECTRICAL SHOCK, CARBON MONOXIDE POISONING, EXPLOSION, PERSONAL
INJURY OR PROPERTY DAMAGE.
!
WARNING
!
DO NOT DESTROY. PLEASE READ CAREFULLY AND
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
MODEL COP2 (For RT-Series Inducers)
MODEL COP2DB (For CDB8 Dryer Duct Booster
®
)
(Includes COP Control and Transducer)
INSTALLATION INSTRUCTIONS
REV A 0417
TJERNLUND PRODUCTS, INC.
1601 Ninth Street • White Bear Lake, MN 55110-6794
PHONE (800) 255-4208 • (651) 426-2993 • FAX (651) 426-9547
Visit our web site • www.tjernlund.com
1
TABLE OF CONTENTS
Page (s)
Description and General Information...............................................................................................................................1
Installation Restrictions and Cautions ............................................................................................................................1
Selecting the proper commercial Dryer Duct Booster duct size ......................................................................................2
COP Installation ..............................................................................................................................................................3
Sensing Sampling Tube Location & Installation ...........................................................................................................3-5
Wiring Connections between COP and RT-Series Rooftop Fan or CDB8 Dryer Booster Fan.....................................5-7
Adjusting The Pressure (Exhaust) Set Point & Balancing Individual Connections..........................................................8
Adjustment of Balancing Baffle(s) For Kitchen and Bath Fans .......................................................................................9
Operation Overview ........................................................................................................................................................9
Troubleshooting, Service and Warranty ..................................................................................................................10, 11
Tjernlund Products welcomes your comments and questions. Address all correspondence to:
Customer Service • Tjernlund Products, Inc. • 1601 Ninth Street • White Bear Lake, MN 55110-6794
Call us toll free at 800-255-4208, visit our web site @ www.tjernlund.com or email us at fanmail@tjfans.com.
DESCRIPTION
The COP Constant Operating Pressure Control includes a VFD that will modulate the speed of an approved Tjernlund Exhaust
Fan to maintain a user adjustable negative pressure set point. The set point is adjusted through dip switches mounted on the COP
circuit board. The operating range of the COP control is -0.05” W.C. to -0.53” W.C. in 0.01” W.C. increments.
Pressure is measured in a chase, duct or vent at the farthest point from the Exhaust Fan with the pressure transducer and sensing
tube kit. As exhaust volume increases within the duct/chase/vent the resulting reduction in measured pressure causes the COP
control VFD to speed the fan up to handle the additional exhaust volume and slow the fan down when the exhaust volume is
reduced to maintain a constant exhaust pressure.
GENERAL INFORMATION
Each COP is electrically factory line tested before shipment.
After opening carton, inspect thoroughly for hidden damage. If any damage is found notify freight carrier and your distributor immediately and file a concealed damage claim.
INSTALLATION RESTRICTIONS
1. Do not use the COP2 with gas or oil fired heating equipment without interlocking all burners being served with a CIC1 Interlock
Control and the required number of MAC-Series Multiple Appliance Controls. The interlock feature is not activated unless a
jumper is installed between “A” and “GND” of the COP2 operational mode terminal strip. Follow instructions and wiring diagrams included with the CIC1 Interlock Control and perform operation check to validate the interface with the COP2 Control.
2. The COP is intended for indoor installation only. Do not mount the COP on a heat source or in an environment that exceeds
104oF (40oC).
3. The maximum distance wire can be ran from the COP Control to Exhaust Fan Motor is 100 feet.
The maximum distance wire can be ran from the COP Control to Pressure Transducer is 250 feet. Transducer wiring
should be in metal conduit or utilize shielded cable.
CAUTIONS
The COP must be installed by a qualified installer (an individual properly licensed and/or trained) in accordance with all local codes
or, in their absence, in accordance with the National Electrical Code. Failure to install, maintain and/or operate the COP in accordance with manufacturer's instructions may result in conditions which can produce bodily injury and property damage.
1. Disconnect power supply from the COP when making wiring connections and servicing the COP. Failure to do so may result
in personal injury and/or equipment damage.
2. All installation restrictions and instructions in the Tjernlund Exaust Fan installation instructions must be followed when using the COP.
3. Make certain power source is adequate for the COP and Tjernlund Exhaust Fan requirements. Do not add equipment to a circuit
when the total electrical load is unknown.
2
SELECTING THE PROPER COMMERCIAL DRYER DUCT BOOSTER DUCT SIZE
Dryers operate most efficiently when exhaust velocities between 1200-2200 feet-per-minute (FPM) are maintained. The number of
co-ducted dryers operating, exhaust fan model selection and the diameter and length of the common exhaust duct can dramatically affect exhaust velocity. Follow the recommendations below to maximize the efficiency of the Tjernlund exhaust system and
connected dryers.
Over sizing the exhaust manifold will reduce velocities and allow more opportunity for lint to drop out of the exhaust stream.
Undersized or excessively long exhaust manifolds will increase drying time and operating costs. COP controller set point adjustments will allow velocities to be fine tuned.
Common exhaust manifold sizing and Dryer Booster Fan selection
1. Based on the CFM total for all connected dryers find the Total Dryer CFM value in the left column of the table equal to or
greater than that CFM and determine the common manifold minimum or maximum duct diameter.
2. Trace to the right to select the Dryer Booster and determine the maximum equivalent length of common duct based upon your
choice of either the minimum or maximum duct diameter.
Example:
4 Dryers @ 225 CFM/ea.
4 x 225 = 900 Total Dryer CFM
Minimum duct diameter at 900 CFM is 9 inches
Maximum duct diameter at 900 CFM is 12 inches
Installing a common duct sized between 9” and 12” is the optimal size range for maintaining a proper velocity across all operating
conditions. Trace to the right to select the desired Dryer Booster and maximum equivalent feet of common duct based on your
duct diameter choice.
Important Common Manifold Construction Recommendations
Always install a capped length of straight pipe at least 1 pipe diameter long behind the dryer farthest from the exhaust termination
for a stable place to measure exhaust pressure. Always connect individual dryers to the common manifold using wye connectors
pointed towards the exhaust termination. Do not use straight tee connections.
3
COP INSTALLATION
The COP is intended for indoor installation only. Do not mount the COP on a heat source or in an environment that exceeds
104oF (40oC). Examples of improper mounting surfaces include vent pipe, top of heater casing or any place where radiant or
convective heat would cause the junction box temperature to exceed temperature limits.
Using the key hole slots on the back of the COP junction box as a template, mark (4) holes on the mounting surface, drill 1/4” pilot
holes for wall anchors if necessary, and secure junction box using provided screws.
PRESS
URE SENSING TUBE LOCATION
PRESSURE SENSING TUBE LOCATION
MULTIPLE DRYERS JOINED IN A COMMON HORIZONTAL DUCT
The sensing tube should be installed in the vent cap of a tee or at the rear of a common exhaust manifold, in back of the vent connector that is farthest from the Dryer Exhaust Fan. The tee is necessary so that only static pressure is measured, (See Diagram
A). If the pressure sensing tube is installed in the side of a duct it will also measure velocity pressure, giving an incorrect signal
back to the COP Control. If mounting on the side of the duct is unavoidable, the sensing tube should be flush to the interior wall of
the duct. Avoid sampling near or in elbows. Duct connections should be sealed to prevent leakage or entrainment. Installer must
provide access for lint clean out.
BEHIND THE DRYER FURTHEST FROM INDUCER
BE LOCATED TWICE THE MANIFOLD DIAMETER
IF POSSIBLE, THE SENSING TUBE SHOULD
D
2D
DRYER FURTHEST
FROM THE INDUCER
MINIMUM
XCOP1
SENSING
TUBING TO
DIAGRAM A
Dryers Common Vented Vertically with CDB8 & COP2DB
Dryers Common Vented Through Side Wall with CDB8 & COP2DB
DRYER FURTHEST
FROM EXHAUST FAN
IF POSSIBLE, THE SENSING TUBE SHOULD
BE LOCATED ONE MAINIFOLD PIPE DIAMETER
BEHIND THE DRYER FURTHEST FROM INDUCER
SENSING
TUBING TO
TRANSDUCER
1 D
MINIMUM
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