CARRIER Controls And HVAC Accessories Manual L0210306

User Manual: CARRIER CARRIER Controls and HVAC Accessories Manual CARRIER Controls and HVAC Accessories Owner's Manual, CARRIER Controls and HVAC Accessories installation guides

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MicroMetl's 0637 economizer is convertible-it will work in either a down discharge or horizontal

discharge application. Read these instructions completely and carefully before beginning installation•

ILL. 1

For Down Discharge

(for Horizontal Application go to page 4) Compressor

Compartment

1. Remove the side panel from the HVAC unit, ILL

1. Discard panel.

2. Install bottom rack. Slide rack over to right side

(when facing coil) of HVAC unit. Set rack in

front of coil and screw rack to coil frame

through pre-punched hole. Maximum screw

length 1/2".

3. Install top rack. Slide rack over to right side of

HVAC unit. Set rack in front of coil and screw

rack to coil frame. Maximum screw length

1/2". Blank-off should fit between top and

bottom racks to the far left of HVAC unit.

(If using 1" filters, spacer may need to be

removed to position blank-off. Once blank-off

is in position, re-install spacer.)

4. If using 2" wide filter remove spacer. ILL. 3.

5. To change filter:

• Open hinged door.

• Remove middle filter first. Slide remaining

filters to middle of rack for removal.

• To install filters, reverse above operation.

Spacerfor

Side Panel

with HVAC unit.

Remove and discard•

Rack Detail

Blank-off ILL. 2

_ jTop filter Evaporator

HVAC unit

screw BoSom filter/- __

#"

Bo_o

ILL. 3

Screw

1" filter

2" filter

(3) 12" X 24" X 1"

(3) 12" X 24" X 2"

Manufacturer reserves the right to disconlJnue,or change at any IJrne,specificaf_ns, designs and pnces withoutno'dceand without incurnngobliga_ons.

Form No. IlK 582A-42-1 /48/50-10381 Catalog No. 534-80093 Copyright MicroMetl Corporation 2001. All fights reserved.

ILL.5

Install additional screw

'l unit flange into

replacement panel.

MicroMetl

1/2" flange

Install 3/4" x1/8 28 _/2"

gasket along

economizer bottom

Replacement panel.

Shipped with

economizer

Install 3/4" x 1/8"

gasket along

flange

3/8" " -. I

Economizer

cover panel

5. Install the replacement panel (shipped with the economizer) over the compressor compartment of the

HVAC unit. Screw in place through the prepunched holes.

6. Slide the economizer into the return air chamber, ILL. 5. Slide the economizer as far to the left as pos-

sible. The economizer's right side will slightly overlap the bottom filter rack. Be sure economizer is flat.

7. Install gasket and the economizer cover panel over the economizer. Screw in place to the divider in the

HVAC unit, base and top. Also, align economizers 3/8" flange to the outside of 1/2" flange as shown and

secure economizer cover panel to economizer using provided pre-punched holes with 1" long tek screw.

8. Run the _economizer wiring harness through the grommet in the economizer side and through the HVAC

units provided hole located in the upper part of the HVAC unit divider. (Install provided grommet in divider

hole.) Follow the enclosed harness routing diagram. (see page 8)

2

g,

11.

12,

Screw the rainhood to the economizer panel

through prepunched holes. Caulk hood perim-

eter. (After adjusting the minimum position

setting on the actuator, install the 24 3/8" x 19 3/8"

aluminum filter in the rain hood.)

Remove cover panel shipped over the horizontal

return opening. Locate the filter access panel

and gasket mating flanges. Install door latch

angle, Screw the hinge to the HVAC unit over

the horizontal return opening. Adjust the closure

handles for a tight seal.

Install the provided filter access sticker on the

hinged door. kluminum water

entrainment

filter

Horizontal supply A ILL. 7

air cover panel. /" _ -

HVAC_

SIDE VIEW

Down Discharge

Replacement

Door latch

angle

Filter access

door - hinged Install filter

access door

sticker

Aluminum

Filter

13. Be sure the seams are all water tight. Seal as

required.

14. Follow the wiring instructions enclosed.

(see page 7)

TOP VIEW ILL. 8

Door

angle

Screw

DOOR LATCH ANGLE

DETAIL

panel

Hinge

Economizer

Hood

3

[]

Compressor

\

Replacement

Panel

l-or I-IOrlzonl:al Ulscnarg_e_

(for Down Discharge Application go to page 1)

1. Remove the side panel from the HVAC unit,

ILL. 1, discard the panel.

2. Install bottom rack. Slide rack over to right

side (when facing coil) of HVAC unit. Set rack

in front of coil and screw rack to coil frame

through pre-punched hole. Maximum screw

length 1/2".

3. Install top rack. Slide rack over to right side of

HVAC unit. Set rack in front of coil and screw

rack to coil frame. Maximum screw length

1/2". Blank-off should fit between top and

bottom racks to the far left of HVAC unit. (If

using 1" filters, spacer may need to be re-

moved to position blank-off. Once blank-off is

in position, re-install spacer.)

Side Panel shipped

with HVAC unit,

Remove and discard

Compressor

Compartment

4. If using 2" wide filter remove spacer. ILL. 3.

5. To change filter:

•Remove filter access door on economizer

cover panel.

• Remove middle filter first. Slide remaining

filters to middle of rack for removal.

• To install filters, reverse above operation.

Spacerfor

ILL. 3

BoSom

Blank-off Top filter

\ __ ..

"/ /'-_--_ ""->_ rack Evaporator

HVAC unit

s( _ws Bo_orn filter/- -_--_,..-_q_

#"

Rack Detail

ILL. 2

4

Filter Wiath

1" filter

2" filter

(3) 12" X 24" X 1"

(3) 12" X 24" X 2"

ILL. 6

Replacement panel

with economizer

Install additional screw

unit flange into

replacement panel.

;unit

9,, Install 3/4" x 1/8"

asket along HVAC

divider flange.

Economizer

panel

Install 3/4" x 1/8"

gasket

HVAC bottom 3/4" x 5/8"

Casketing,

3 Sides.

7.

/16 Filter

access door

blank-off

Caulk these corners

after economizer is

installed

28 1/2"

Screw _

nto base

Remove molded gasket

from economizer for

horizontal application.

6. Install the replacement panel over the compressor compartment. Screw in place through the

prepunched holes.

7. Install provided economizer blank-offto bottom of economizer. Screw in place through the pre-

punched holes.

8. Install the 3/4 x 5/8" gasketing on the bottom flanges of the economizer, ILL. 6.

9. Turn the economizer on its side as shown, ILL. 6. Slide the economizer into the cabinet and as far

to the left as possible. The economizer will set against the left side of the HVAC unit. Caulk as

required.

10. Install the economizer cover panel over the opening and economizer.

11. Align the economizer to the cover panel with 1" long tek screw using the provided pre-punched

holes.

NOTE:

The relief damper must be sealed shut for the horizontal discharge application.

5

HVAC Unit

ILL. 7

Replacement panel

with economizer

Filter access door for

Lpplieation

Install filter access

door sticker.

Rainhood with

water entrainment

filter

11. Route the economizer wiring harness through

the grommet in the economizer side and

through the HVAC unit's provided hole lo-

cated in the upper part of the HVAC unit

divider. (Intall provided grommet in divider

hole.) Followthe harness routing diagram.

(see page 8)

12. Screw the rainhood to the economizer panel

through the prepunched holes. Caulk hood

perimeter. An extended socket will be re-

quired for the left side of the hood. After

adjusting the minimum position setting on the

actuator, install the aluminum filter in the

rainhood. Install the provided filter access

sticker on the horizontal filter door.

13. Follow _he wiring instructions, see page 7.

iThe side hinged panel and

ihorizontal cover panel will not

| be used in the horizontal

iapplicationl,

6

Equipment

Transformer Yellow

Brown

Green

White

Main24V

SpliceBox

0

_. Gr_..Lr

[

NOTES: Red

/'_ OPTIONAL LOW AMBIENT CONTROL

//_ TRANSFORMER IN HVAC UNIT.

Z_ POWER SUPPLY. DISCONNECT MEANS AND OVERLOAD

PROTECTION AS REQUIRED.

z_ MUST BE INSTALLED ON SUPPLY AIR FAN. 3000 OHM AT

25 C, 77 F

/.k REMOVE JUMPER WHEN OPTIONAL REMOTE

POTENTIOMETER IS USED

z_IS IS AN ELECTRONIC SWITCH WHICH CLOSES WHEN

POWERED BY A 24 VAC INPUT.

Z_ RELAY 1K & 2K ACTUATE WHEN THE OUTSIDE AIR

SENSED BY THE ENTHALPY OR DRY BULB IS LOWER

THAN THE SET POINT A-D.

Z_ FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR

SHOULD BE REMOVED ONLY IF ASENSOR IS ADDED

TO SR AND + FOR DIFFERENTIAL CHANGEOVER.

/_ RESISTER ONLY REQUIRED FOR FIXED DRY BULB.

_Gra

DischargeA

Sensor ____ Orange

Green _]

J[ Dry Bulb

outside air

sensor

(or optional

enthalpy)

..... i

.... 1 t

It

It

OplJonalRemote

'Poteni]ometer

Form No. IlK 582A-42-1 /48/50-103SI Catalog No. 534-80093

GO

NOTES:

Equipment

Transformer

Ax D_ Bulb Outside

Air Sensor

(or optional enthalpy)

WIRING LEGEND

(_ Terminals

Z_ OPTIONAL LOW AMBIENT CONTROL.

EQUIPMENTTRANSFORMERMUSTBESIZEDTOACCOMMO- ___Wire nut or equivalent connection

z_ DATE AN ADDITIONAL 12VA. IF NOT, AN ADDITIONAL

OPTIONALTRANSFORMERISREQUIRED. __MMC wiring harness

-- Field supplied low voltage wire

n, _Gray

Sensor

Main 24V

AC FUAIOR

,YEtLOW [IT,

III IZI : III I

n. ',',,,,',

Ill,,I I I

m_il II I

ItJ U II

iILJL_ II

I,, _._Z!__Im ',k.....

,,,,, ,:, ;;

I

iii l 4% ] I

lli I I

1,I ', I , 1 _ Op'donal Remote

iI tl Ii '1[;....... _ Poten_neler

i I

Ill Le- ...... -I I [

Z_ POWER SUPPLY. DISCONNECT MEANS AND OVERLOAD

PROTECTION AS REQUIRED.

Z_ MUST BE INSTALLED IN SUPPLY AIR STREAM. 3000 OHMS

AT 25_C, 77eF

Z_ REMOVE JUMPER WHEN OPTIONAL REMOTE POTENTIOM-

ETER IS USED

/_ lS IS ANELECTRONIC SWITCH WHICH CLOSES WHEN

POWERED BY A 24 VAC INPUT.

//_ RELAY 1K & 2K ACTUATE WHEN THE OUTSIDE AIR SENSED

BY THE ENTHALPY OR DRY BULB IS LOWER THAN THE SET

POINT A-D.

FACTORY INSTALLED 620 OHM. 1 WATF, 5% RESISTOR

,_ SHOULD BE REMOVED ONLY IF AN ENTHALPY OR ADJUST-

ABLE DRY BULB SENSOR IS ADDED TO SR AND + FOR

_ DIFFERENTIAL

RESISTOR ONLY REQUIRED FOR FIXED DRY BULB.

R1- RELAY IS FIELD SUPPLIED AND FIELD INSTALLED. MOUNT

RELAY IN CONTROL BOX, ABOVE INDOOR FAN RELAY

__L--Field supplied high voltage wire

lel ...... q _ i I

IIL.... 1 III I--Other low voltage wire

I L---I IIII I

THERMOSTAT I shock or equipment damage

Form No. IlK £.n_.A-42-1 /48/50-103SI Catalog No. 534-80093

Routing

Wiring

Harness

A _'-'--'3

Economizer

Damper

Supply

fan/

or

Dart enthalpy

module (optional)

iWater

"q--'--'J entrainment

EconOmizer A filter in hood

rainhood

Economizer harness

Economizer actuator

Economizer

rainhoed

Damper actuator

and dry bulb or Compressor

enthalpy

Main 24V

splice box

Discharge

sensor. Field

To.._op_View

Wiring harness. Factory

attached to economnzer

actuator. Factory run to

splice box.

Replacement panel

shipped with econo-

mizer

Main 24V

=lice box

harness

"A-A"SideView

Discharge

sensor. Field

install.

ACCESSORY SLIDE-IN

ECONOMIZER CONTROL

INSTALLATION,

1. Unpackage economizer,

2. Install accessory in unit per

installation instructions provided.

3. Remove parts bag and instruc-

tions from inside of accessory.

4, Install the discharge sensor in the

supply fan section. The sensor

must protrude into the supply air

stream.

5, Uncoil the wiring harness.

Connect the two gray wires of the

harness to the discharge sensor

leads using the two wire nuts

provided.

6. Route the remainder of the wire

harness through the unit to the

main 24V splice box.

7. Mount thermostat downstairs per

the manufacturer's instructions.

Run proper wire from the thermo-

stat to the unit control panel.

8,

9,

10.

11.

Review the MicroMetl wiring

diagram from this booklet.

Connect unit, wire from the

thermostat and harness from the

economizer, together to match the

diagram.

Follow start-up instructions below.

Adjust change over setpoint on

logic module.

Adjust minimum position set point

on logic module.

d[.:']

1. After unit is wired begin start-up procedures.

2. Set thermostat functions to OFF. Set comfort levels to

minimum cool and minimum heat.

3. Turn unit power on following manufacturer's start up

instructions.

4. Turn thermostat fan function to ON. Unit indoor blower

should start and damper motor will drive to minimum vent

position. Minimum vent position should be adjusted on

the economizer logic for the proper percentage of outdoor

air. *

5. Switch the thermostat function from OFF to HEAT or AUTO.

Bring the comfort setpoint for heat up to engage first stage

heating. Follow manufacturer's procedures to check

heating cycle. Bring the comfort setpoint for heat up to

engage second stage heating if available. Check this

heating cycle also.

6. Under no circumstance should the economizer operate in

a heating mode except for minium vent position.

g

7. Change the thermostat function from HEAT to COOL or

leave in AUTO. Drop the comfort setpoint down to engage

first stage call for cooling. The first stage cooling call

travels to the economizer. If the outdoor air is above the A

through D setpoint, (see chart on next page), the first

stage mechanical cooling is brought on. As the comfort

setpoint is reduced more there will be a second call for

cooling which will bring on second stage mechanical

cooling if available.

8. In the cooling mode if the outdoor air is below the satpoint,

the first stage call for cooling will open the economizer. As

the comfort setpoint is reduced more there will be a

second call for cooling. This call will bdng on the first

stage mechanical cooling to back up the economizer.

9. Once all stages have been cycled, and all adjustments

made return thermostat to its proper operating mode,

replace all doors, panels and hoods.

10. Leave a copy of these instructions with the customer.

These instructions are for fully modulating elec-

tronically controlled economizers utilizing solid

state logic throughout. A standard single or

(recommended) two stage thermostat is all that is

needed to complete the control and economizer

system for the HVAC equipment.

1.

2.

3.

4.

5.

Damper actuator .., 9901-0083 provides 24v modulating

control of economizer dampers, 25 in. lb. of torque.

(Honeywell M7415A-1006)

Ball joint for linkage connection.

Discharge sensor ... 9901-0001 provides a signal (3000

Ohms at 25°C or 77°F) to the actuator during free cooling

or economizer mode. The signal opens the economizer

damper until the discharge temperature drops below 55 °.

At this time the signal causes the motor to modulate the

damper and mix outside air with return air to maintain a

50° R to 56 ° R discharge temperature.

Wire nuts to connect discharge sensor to the harness.

Economizer logic ... 9901-0017 accepts input from

discharge _ensor and outside air sensor. Analyzes input

to control actuator modulation and economizer switching.

Logic also houses minimum position adjustment and

enthalpy or adjustable dry bulb adjustment. When used

with optional differential sensors in the return air, the logic

is capable of selecting the most economical air available

for cooling. (Honeywell W7459A-1001)

6. Dry bulb...9901-0183 senses temperature of outside air

and provides signal to the economizer logic. Opens

outside air at 60 °, closes outside air at 70 ° (enthalpy

optional).

7. 5/8" grommet fits 5/8" hole that wires may pass through to

keep from chaffing.

8. Wire clamps to secure wires to base, dividers, etc..

9. Wire harness color coded and pre-wired to actuator and

economizer logic... 9962-0087.

10. 1/2" hex head screws to secure wire clamps.

10

The purpose of an economizer is to use outdoor air

for cooling, whenever possible, to reduce compres-

sor operation.

The economizer system initially responds to a signal

from the cooling thermostat and functions as a true

first stage for cooling, while providing maximum fuel

economy. The economizer is automatically locked

out during the heating mode and holds the outdoor

air damper at the minimum position settings.

During the occupied period, on a call for cooling,

when outdoor air temperature or enthalpy (optional)

conditions are low, the economizer actuator will

proportion to maintain between 50 °-F and 56-oF at

thermistor discharge sensor.

If the mixed or discharge temperature is above 56°- F,

actuator will open to admit additional outdoor air until

the temperature returns to the 50 °-to 56-° F range. If

the mixed or discharge air temperature is below 50_

F, the actuator will proportion closed, shutting the

outdoor air damper until the temperature returns to

the 50 -oto 56-oF range. During the occupied period,

the actuator will not close past the minimum

position.

If the fully open actuator cannot satisfy the space

demand, mechanical cooling is sequenced on.

During the unoccupied period, the actuator will

override minimum position setting and drive fully

closed. On a loss of power, the actuator will spring

return fully closed.

When in heating operation, or when outdoor air

temperature or enthalpy (optional) conditions are

high, economizer operation is locked out, and

actuator is held at minimum position.

The staging relay is used when the first stage

compressors must provide mechanical cooling

when assisting the economizer.

The staging relay can be omitted when the second

stage compressors can be used to assist the

economizer with mechanical cooling.

tt

Lvli_ It it It, iI "..-V_L='_((*},Ir "__';i_71_Jf,, [_, [

The minimum position potentiometer keeps the outdoor air 2. If remote control of dampers is desired, connect the

damper from closing completely during system operation remote potentiometer to P and P and turn it fully

to provide ventilation, clockwise before adjusting the minimum position.

1. Make sure the factory installed jumper is in place

across terminals P and P_.

3. Connect 24V AC to system and adjust the potentiom-

eter on the face of the logic module with a screwdriver

for desired minimum position.

Single enthalpy: The enthalpy changeover setpoints is set to

return the outdoor air damper to minimum position when the

enthalpy rises above its set point. The enthalpy setpoint

scale markings, located on W7459 are A,B,C,D as shown

below. The factory-installed 620-ohm lumper must be in

place across terminals + and S,_unless using differential

enthalpy.

10

20-

W

---_13£

I-uJ

<;__ d0-

uJ:E

_O 40-

zo:

:_ow

_t)>

__wO 5o-

XQ_O

_ ,,0,< 60-

Q:.q 70-

wI

D 80

lid

IC .

IA

5O

e0 ::..i_ O>

i 0::0 w

aw(.9

T:EwZ

:_,_

::_Wz°

'_-o

-80W (j

'LII _,1

EXAMPLE FOR DETERMINING

ENTHALPY CONTROL SETTING

(1008-0100)

i I]'il I_ _[;]il ir_l I[i.] i_1 i[. [_._,_;] dl.."._[_ i,[. |1_ 'i[.] i f; iii

Differential enthalpy control (optional) utilizes two enthalpy

sensors connected to one W7459 Economizer Control.

The enthalpy setpoint scale markings, located on the W7459,

are A,B,C,D. Turn the setpoint potentiometer fully clockwise

past the D setting. The economizer will select the air with

lower enthalpy for cooling; i.e., if outdoor air has lower

enthalpy than return air, then the outdoor air damper will be

opened to bring in outdoor air for free cooling. The differential

enthalpy connects to S_and + on the W7959 logic.

Note: The C7650A adjustable dry bulb can also be used for

differential change over. Only the temperature of the outdoor

air and return air will be compared and the best selected for

free cooling.

MMlcroMeU

Call Toll-Free: 1-800-662-4822

Fax: 1-317-543-5986

_ icroMetlWest

Call Toll-Free: 1-800-884-4662

Fax: 1-775-356-9184

.% _L''- Enthalpy Changeover Set

Point

._.iMinimum Damper

Position Setting

.._p...--.--LEDLights up to

indicate Outdoor Air is

Suitable for Free

Cooling

W7459 Logic Module

Manufac_rerreservesthe rightto discontinue,or change at anytime, specifications,designsand priceswithoutno'_ceand withoutincurnngobligations.

Copyhght MicroMetl Corporation 2001. All rights reserved. 12

SUBMITTED TO

COMPANY:

DRAWN BY: M. HARGIS

JOB NAME:

EQUIPMENT:

NOTES:

Supply air

cover panel

shipped on

HVAC unit.

Features:

• Economizer can be used in a down or horizontal application.

• Fully assembled, easy to install in both down and horizontal application.

•Modulating control system factory installed and wired (optional).

• Rainhood ships assembled, includes a water entrainment filter and is constructed of prepaint steel.

• Low leak outside air damper.

•Barometric relief damper (for down discharge only).

•Insulated filler access door is hinged and latched.

•Includes filter rack and (3) 12" x 24" x 1"filters.

Carrier Unit No. Economizer P.N. Carrier P,N.

48/50GS 50JS 048-060 0637-0211

48/50GX. 50GL 48GP 042-060 (NOTE 1) CPECOMZR004A00

50JX, JZ 042-048

50JX, JZ 060 0637-0311 CPECOMZR006A00

NOTE:

1. DPDT relay (HN61KK040) for heat pump application is field provided on the 0637-0211.

Replacement panel

shipped with

economizer

SIDE VIEW

Down Discharge

Filters

Hinged

latched door for

down discharge

filter access

"with

outside air Economizer's barometnc "-.... water entrainment

damper relief damper _,. filter

(For down discharge only)

Aluminum water

entrainment

filter

THIS OOCUMENT IS THE PROPERTY OF MICROM ETL CORPORATION AND IS DELIVER ED UPON THE EXPRESS CONDITION THAT THE CONTENTS WILL NOT BE DISCLOSED O R US ED WITHOUT MICROMETL'S WRI_ EN CONSENT

MICROMETLCORPORATION*3035N SHADELANDAVENUE,SUITE300 °INOIANAPOLIS, IN 46226*l-800-662-4822_MICROMETLWES T°202SOUTH 18THS- °SPARKS,NV 89431 ol 800-884-466E

14

15

Ilk 582A-42-1 /48/50-103SI Catalog No. 534-80093 Page 16