Johnson Controls CVWSEK-240BK/DP Owner's manual

R-410A

Issue Date:

August 10, 2017

MODEL CVWSEK-240BK/DP WATERSIDE ECONOMIZER

FOR CSV240B LEFT-HAND VERTICAL R-410A

STYLE B

WATER-COOLED SELF-CONTAINED UNITS

INSTALLATION, OPERATION,

& MAINTENANCE Supersedes: 145.15-IOM4 (514) Form 145.15-IOM4 (817)

IMPORTANT!

READ BEFORE PROCEEDING!

GENERAL SAFETY GUIDLINES

This equipment is a relatively complicated apparatus.

During installation, operation, maintenance or service,

individuals may be exposed to certain components or

conditions including, but not limited to: refrigerants

, oils,

materials under pressure, rotating components, and

both high and low voltage. Each of these items has the

potential, if misused or handled improperly, to cause

bodily injury or death. It is the obligation and respon-

sibilty of operating/service personnel to identify and

recognize these inherent hazards, protect themselves,

and proceed safely in completing their tasks. Failure to

comply with any of these requirements could result in

serious damage to the equipment and the property in

which it is situated, as well as sever personal injury or

death to themselves and people at the site.

This document is intended for use by owner-authorized

operating/service personnel. It is expected that this

individual possesses independent training that will en-

able them to perform their assigned tasks properly and

safely. It is essential that, prior to performing any task

on this equipment, this individual shall have read and

understood this document and any referenced materials.

This individual shall also be familiar with and comply with

all applicable governmental standards and regulations

pertaining to the task in question.

SAFETY SYMBOLS

The following symbols are used in this document to alert the reader to areas of potential hazard.

DANGER indicates an imminently haz-

ardous situation which, if not avoided,

will result in death or serious injury.

WARNING indicates a potentially haz-

ardous situation which, if not avoided,

could result in death or serious injury.

CAUTION identifies a hazard which

could lead to damage to the machine,

damage to other equipment and/or

environmental pollution. Usually and

instruction will be given, together with a

brief explanation.

NOTE is used to highlight additional in-

formation which may be helpful to you.

All wiring must be in accordance with published specifications and must be performed ONLY by

qualified service personnel. Johnson Controls will not be responsible for damages/problems

resulting from improper connections to the controls or application of improper control signals.

Failure to follow this will void the manufacturers’warranty and cause serious damage to property or injury

to persons.

TABLE OF CONTENTS

4 …… Economizer Coil Installation

6 …… Economizer Piping & Valve Installation

12 ……Temperature Control Panel Installation

14.…. Unit Schematic Diagram

14 …… WSE Harness Connections

14.…. Sequence of Operation

17….. Appendix I .3 Way Waterside Economizer Diverting Valve Adjustment

21……Appendix II. System 450 control model C450CCN-3C quick set up instruction

PRIOR TO INSTALLING OR SERVICING THE UNIT, LOCK ALL ELECTRICAL POWER SUPPLY

SWITCHES IN THE OFF POSTION. FAILURE TO DISCONNECT POWER SUPPLY MAY RESULT IN

ELECTRICAL SHOCK OR EVEN DEATH.

ECONOMIZER COIL INSTALLATION

1) Position the drain pan using bent down lip of the drain pan according to illustration. Make sure the drain pan is

level, do not force it. Push the drain pan against the unit; the pan assembly is designed to rest on the heads

of the corner post screws. Using self-drilling screws, attach drain pan support angles to corner posts.

2) Identify the Left-hand and Right-hand WSE Coil Brackets. The Brackets are designed for easy positioning.

Press the Left Bracket against the top of the unit then slide it sideways to left until the bracket flange butts

against the inside bend of the left unit corner post. The bottom of the Bracket will be inside the drain pan.

Repeat the same for the Right Bracket. Attach the Brackets to the corner posts using self-drilling screws in

ALL pre-punched clearance holes. Check distance between coil mounting holes centers prior to lifting the coil

into the drain pan.

3) Center the U-shaped Top Filler between the WSE Coil Brackets, then align Top Filler with Unit Top. The

longer flange (one with pre-punched holes) must face Unit Top front flange. Using supplied self-drilling

screws, attach Top Filler to Unit Top.

4) Carefully lift the WSE coil and place it inside of the drain pan, coil connections facing left side of the unit (see

illustration). Push the WSE Coil against the Brackets; align holes on the WSE Coil flange with mating holes on

the Brackets.

5) Slide provided bolts through the mounting holes on the Brackets and the WSE Coil flange (Insert bolts,

threaded end first, through “windows” in the Brackets).

6) Tighten the WSE Coil to the unit using provided nuts and lock-washers.

7) Attach unit filter rack to entering air face of waterside economizer coil, using self-drilling screws.

Applies ONLY to DELUXE WSE KIT

8) After the unit piping has been completed, attach Return Bends Cover and Header Cover using provided self-

drilling screws.

Exercise care when working around the sharp metal edges of door panels or flanges.

These edges can be sharp, and can cause injury.

LEFT HAND COIL

BRACKET

RIGHT HAND COIL

BRACKET

DRAIN PAN

SUPPORT ANGLE

BASIC KIT INSTRUCTIONS

LH WATERSIDE ECONOMIZER PIPING AND VALVE INSTALLATION:

1) Refer to the accompanying illustrations for recommended piping and valve mounting layout. The piping

layout may be varied from that illustrated, to suit on-site conditions or requirements, provided that the correct

water flow arrangement is maintained. The 3-way diverting valve ports are marked ‘A’, ‘B’, and ‘C’. The

common port need to be changed from port ‘C’to port ‘A’if the common port is not ‘A’(Please see the

appendix I.—-3 way waterside economizer diverting valve adjustment). Proper orientation of the valve ports

is critical for correct operation of the economizer cycle.

2) Wrought copper adapters are provided with the kit to adapt the 3 X 2”NPT valve connections, and the CSV

Unit’s 2” NPT water inlet connection, to 2-1/8 OD copper tube fittings. The balance of required fittings, and

the straight tube lengths, must be field provided (see piping layout illustrations).

3) It is recommended that the connection of the economizer-bypass pipe branch, to the CSV condenser water

inlet, be soldered or brazed in place in after being fully threaded into the unit inlet fitting. This will ensure that

this joint remains a permanent leak-free connection. (See accompanying photo)

4) The copper adapters for the 3-way valve should be first soldered to the short lengths of tubing connecting

them to the adjacent fittings, before being threaded into the valve body.

DO NOT install the valve actuator until piping assembly is complete. A low-

temperature solder alloy should be used to prevent annealing or out-of round

distortion which can occur with high temperature brazing. Use a good quality pipe

sealant on the threaded fittings, and fully tighten the adapters into the brass valve

body (Torque should not exceed 75 ft-lb).

5) Assemble the tubing and fittings into the correct arrangement as shown. Tack all tubes in place before

soldering to ensure proper fit-up.

6) Pressure test the completed piping assembly with nitrogen. Test pressure should at least equal the working

water supply pressure to the unit. Maximum pressure rating for the 3-way diverting valve is 580 psig.

7) Locate the remote electronic temperature sensor (it will be attached to the Temperature Control Panel

assembly). The sensor must be securely attached to the surface of the incoming water supply line, upstream

of the 3-way valve (use wire ties, tape, or gear clamps). The sensor leads will need to be extended; the two

sensor leads must be connected to the terminal strip on the Temperature Control Panel. A wire routing hole

is provided in the condenser corner post of the unit (early model units require field punching –use a wire

protection bushing).

8) Insulate all exposed water piping to prevent sweating; ensure that the water temperature sensor location is

well insulated. Insulation should cover horizontal stub-outs on economizer coil; insulation of the vertical coil

headers is not required.

9) Install actuator motor to the 3-way diverting valve. Before tightening the self-centering shaft adapter,

manually rotate the diverting valve stem to the fully counter-clockwise position. The actuator motor position

should be in the fully counter-clockwise position; if not, depress the black ‘de-clutch’ button and rotate the

shaft adapter assembly to the fully CCW position stop. Slide the anti-rotation bracket forward to engage the

clip on the connection end of the actuator motor. Do not seat the anti-rotation bracket at the end of the slot;

allow sufficient end-play for the motor to ‘float’ on the valve platform

10) Remove the cover from the actuator, and connect three wire leads to the terminal strip. Lead length must be

sufficient to reach the terminal strip of the ‘Temperature Control Panel’, which will be installed immediately

inside the left hand end panel of the condenser section (behind the water bypass piping / valve assembly).

See Panel wiring diagram for proper terminal connections.

DELUXE KIT INSTRUCTIONS

WATERSIDE ECONOMIZER PIPING AND VALVE INSTALLATION:

1) Refer to the accompanying illustrations for recommended piping and valve mounting layout. The piping

layout may be varied from that illustrated, to suit on-site conditions or requirements, provided that the

correct water flow arrangement is maintained. The 3-way diverting valve ports are marked ‘A’, ‘B’, and ‘C’.

The common port need to be changed from port C to port A if the common port is not port ‘A’(Please see

the appendix I.—-3 way waterside economizer diverting valve adjustment). Proper orientation of the valve

ports is critical for correct operation of the economizer cycle.

2) All required fittings, and the straight tube lengths, are provided with the kit (see piping assembly A-D

illustrations for full instructions). Wrought copper adapters are provided with the kit to adapt the 3 X 2”NPT

valve connections, and the CSV Unit’s 2” NPT water inlet connection, to 2-1/8 OD copper tube fittings.

3) It is recommended that the connection of the economizer-bypass pipe branch, to the CSV condenser water

inlet, be soldered or brazed in place in after being fully threaded into the unit inlet fitting. This will ensure that

this joint remains a permanent leak-free connection. (See accompanying photo on page 5)

4) The copper adapters for the 3-way valve should be first soldered to the short lengths of tubing (see piping

assembly “B”) connecting them to the adjacent fittings, before being threaded into the valve body (Do not

install the valve actuator until piping assembly is complete). A low-temperature solder alloy should be used

to prevent annealing or out-of round distortion which can occur with high temperature brazing. Use a good

quality pipe sealant on the threaded fittings, and fully tighten the adapters into the brass valve body (Torque

should not exceed 75 ft-lb).

5) Assemble the tubing and fittings into the correct arrangement as shown. Tack all tubes in place before

soldering to ensure proper fit-up.

6) Pressure test the completed piping assembly with nitrogen. Test pressure should at least equal the working

water supply pressure to the unit (NOTE: Maximum pressure rating for the 3-way diverting valve is 580 psig).

7) Locate the remote electronic temperature sensor (it will be attached to the Temperature Control Panel

assembly). The sensor must be securely attached to the surface of the incoming water supply line, upstream

of the 3-way valve (use wire ties, tape, or gear clamps). The two sensor leads must be connected to the

terminal strip on the Temperature Control Panel. A wire routing hole is provided in the condenser corner post

of the unit (early model units require field punching –use a wire protection bushing).

8) Insulate all exposed water piping to prevent sweating; ensure that the water temperature sensor location is

well insulated. Insulation should cover horizontal stub-outs on economizer coil; insulation of the vertical coil

headers is not required.

9)Install actuator motor to the 3-way diverting valve. Before tightening the self-centering shaft adapter,

manually rotate the diverting valve stem to the fully counter-clockwise position. The actuator motor position

should be in the fully counter-clockwise position; if not, depress the black ‘de-clutch’ button and rotate the

shaft adapter assembly to the fully CCW position stop. Slide the anti-rotation bracket forward to engage the

clip on the connection end of the actuator motor.

10) Remove the cover from the actuator, and connect three wire leads to the terminal strip. Lead length must

be sufficient to reach the terminal strip of the ‘Temperature Control Panel’, which will be installed

immediately inside the left hand end panel of the condenser section (behind the water bypass piping / valve

assembly). See Panel wiring diagram for proper terminal connections.

Piping Parts Supplied in DELUXE KIT

Part #

Qty

Description

CLR-218

ELBOW - 2-1/8" LG RADIUS 90DEG CxC

CST-218

ELBOW -STREET 2-1/8" 90DEG CxF

CPA-21820M

2-1/8 ODS X 2" MPT ADAPTER

CPT-218

COPPER TEE - 2-1/8" CxCxC

RTL-200

3-5/8"