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
discharge

0637 economizer
application.

is convertible-it

will work in either a down discharge or horizontal

Read these instructions

completely

and carefully before beginning

installation•

ILL. 1

For Down Discharge
(for Horizontal

Application

Compressor
Compartment

go to page 4)

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
length 1/2".

hole. Maximum screw

Side Panel
with HVAC unit.
Remove and discard•

Rack Detail
Blank-off

(If using 1" filters, spacer may need to be
removed to position blank-off. Once blank-off
is in position, re-install spacer.)

ILL. 2

jTop

filter

Evaporator

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.

HVAC unit
screw

BoSom filter/-

Spacerfor

ILL. 3

Bo_o

Screw

1" filter

(3) 12" X 24" X 1"

2" filter

(3) 12" X 24" X 2"

Manufacturer reserves the right to disconlJnue,or change at any IJrne,specificaf_ns, designs and pnces without no'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.

Replacement panel.
Shipped with
economizer
Install 3/4" x 1/8"
gasket along
flange

3/8"

" -.

1/2" flange
MicroMetl
Install 3/4" x 1/8

28 _/2"

economizer bottom
gasket along
Economizer
cover panel

5. Install the replacement
panel (shipped with the economizer)
HVAC unit. Screw in place through the prepunched holes.

over the compressor

compartment

of the

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

Screw the rainhood to the economizer panel
through prepunched holes. Caulk hood perimeter. (After adjusting the minimum position
setting on the actuator, install the 24 3/8" x 19 3/8"
aluminum filter in the rain hood.)

11. 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.

12, Install the provided
hinged door.

filter access sticker on the
kluminum water
entrainment
filter

ILL. 7

Horizontal supply A
air cover panel.
/"
HVAC_

SIDE VIEW

Down Discharge

Replacement

Door latch

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

angle
Filter access
door - hinged

Aluminum
Filter

Install filter
access door
sticker

14. Follow the wiring instructions
(see page 7)

TOP VIEW

enclosed.

ILL. 8

Screw

panel
Compressor

Door
angle
Hinge

[]
DOOR LATCH ANGLE
DETAIL

\
Replacement
Panel

Economizer
Hood

l-or I-IOrlzonl:al Ulscnarg_e_
(for Down Discharge

Application

go to page

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

Compressor
Compartment

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
length 1/2".

hole. Maximum

screw

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.)

Side Panel shipped
with HVAC unit,
Remove and discard

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

Blank-off

"/ /'-_--_

5. To change filter:
• Remove filter access door on economizer

..
""->_

Top filter
rack

Evaporator

cover panel.
• Remove middle filter first. Slide remaining
filters to middle of rack for removal.
• To install filters, reverse above operation.

HVAC unit
s( _ws

Bo_orn filter/-

Rack

-_--_,..-_q_

Detail

ILL. 2
Spacerfor

Filter

Wiath

ILL. 3

BoSom
4

1" filter

(3) 12" X 24" X 1"

2" filter

(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

/16

Filter
access

Install 3/4" x 1/8"
gasket
HVAC bottom
3/4" x 5/8"
Casketing,
3 Sides.

door

28 1/2"
blank-off

Screw

nto base
Caulk these corners
after economizer is
installed

6. Install the replacement
prepunched holes.

panel over the compressor

Install provided economizer
punched holes.

Install the 3/4 x 5/8" gasketing

blank-offto

Remove molded gasket
from economizer for
horizontal application.

compartment.

bottom of economizer.

Screw in place through the

Screw in place through the pre-

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
11. Align the economizer
holes.

cover panel over the opening and economizer.
to the cover panel with 1" long tek screw using the provided pre-punched

NOTE:
The relief damper

must

be sealed

shut for the horizontal
5

discharge

application.

HVAC Unit

ILL. 7

Replacement
with

panel
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 located 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 required 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.

i
i
|

The side hinged panel and
horizontal cover panel will not
be used in the horizontal

applicationl,

_Gra
DischargeA
Orange

Sensor ____

Green
Equipment
Transformer

Yellow

Brown

Green

White

NOTES:

Main24V
Splice Box

Gr_..Lr

[

Red

/'_

OPTIONAL LOW AMBIENT CONTROL

//_

TRANSFORMER

IN HVAC UNIT.

.....

....

Z_ POWER SUPPLY. DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
z_

MUST
BEFINSTALLED ON SUPPLY AIR FAN. 3000 OHM AT
25 C, 77

/.k

REMOVE JUMPER WHEN OPTIONAL REMOTE
POTENTIOMETER IS USED

z_IS POWERED
IS AN ELECTRONIC
BY A 24 VAC SWITCH
INPUT. WHICH CLOSES WHEN
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 A SENSOR IS ADDED
TO SR AND + FOR DIFFERENTIAL CHANGEOVER.

RESISTER ONLY REQUIRED FOR FIXED DRY BULB.

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

Catalog No. 534-80093

OplJonalRemote
Poteni]ometer

_]
Dry Bulb
outside air
sensor
(or optional
enthalpy)

_Gray

Sensor
Equipment
Transformer

Main 24V

,YEtLOW

[ IT,

AC FUAIOR

D_ Bulb Outside
Air Sensor
(or optional enthalpy)

III

IZI :

',',,,,',
Ill,,

I
J

NOTES:

OPTIONAL LOW AMBIENT CONTROL.

EQUIPMENTTRANSFORMERMUSTBESIZEDTOACCOMMODATE AN ADDITIONAL 12VA. IF NOT, AN ADDITIONAL
OPTIONALTRANSFORMERISREQUIRED.

il I
I

POWER SUPPLY.
DISCONNECT MEANS AND OVERLOAD
PROTECTION
AS REQUIRED.

MUST BE INSTALLED IN SUPPLY AIR STREAM. 3000 OHMS
AT 25_C, 77eF

REMOVE JUMPER WHEN OPTIONAL REMOTE POTENTIOMETER IS USED

lS IS AN ELECTRONIC 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 ADJUSTABLE 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

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

Catalog No. 534-80093

WIRING LEGEND
U

II
LJL_

I,, _._Z!__Im ',k.....
,,,,, I
,:,
;;
iii
lli

4%
I

]

Op'donal Remote

;.......

Poten_neler

iI tl Ii '1[
i I
Ill

lel

L e- ......

......

I I L ....
I L---I

1
I

Terminals

___Wire

l
I

1,I ', I
Z_

III I

__MMC

q
I
I

-I

_
I
I

THERMOSTAT

nut or equivalent

wiring

harness

Field supplied low voltage wire

[

__L--Field

supplied

I
I

--Other

low voltage wire

connection

I shock or equipment damage

high voltage

wire

_'-'--'3

Supply

Routing
Wiring
Harness

ACCESSORY
SLIDE-IN
ECONOMIZER
CONTROL
INSTALLATION,
1. Unpackage economizer,

Main 24V
splice box

fan/

Discharge
sensor. Field

Install accessory in unit per
installation instructions provided.

Remove parts bag and instructions from inside of accessory.

Install the discharge sensor in the
supply fan section. The sensor
must protrude into the supply air
stream.

Uncoil the wiring harness.
Connect the two gray wires of the
harness to the discharge sensor
leads using the two wire nuts
provided.

Route the remainder of the wire
harness through the unit to the
main 24V splice box.

Mount thermostat downstairs per
the manufacturer's instructions.
Run proper wire from the thermostat to the unit control panel.

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

To.._op_
View
Wiring harness. Factory
attached to economnzer
actuator. Factory run to
splice box.

Economizer

Replacement panel
shipped with economizer

Damper
or
enthalpy
(optional)

Dart
module
EconOmizer
rainhood

"q--'--'J

Economizer

Water
entrainment
filter in hood
Economizer harness
actuator

Economizer
rainhoed
Main 24V
=lice box

below.

harness
10. Adjust change over setpoint on
logic module.
Damper actuator
and dry bulb or
enthalpy

Compressor

d
1.
2.
3.
4.

Discharge
sensor. Field
install.

"A-A"SideView

[.:']

11. Adjust minimum position set point
on logic module.

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.

After unit is wired begin start-up procedures.
Set thermostat functions to OFF. Set comfort levels to
minimum cool and minimum heat.
Turn unit power on following manufacturer's start up
instructions.
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.
*
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.
Under no circumstance should the economizer operate in
a heating mode except for minium vent position.

These instructions are for fully modulating electronically 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.

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

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)

Dry bulb...9901-0183 senses temperature of outside
and provides signal to the economizer logic. Opens
outside air at 60 °, closes outside air at 70 ° (enthalpy
optional).

5/8" grommet fits 5/8" hole that wires may pass through to
keep from chaffing.

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

Wire harness color coded and pre-wired to actuator and
economizer logic... 9962-0087.

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

sensor to the harness.

air

The purpose of an economizer
is to use outdoor air
for cooling, whenever possible, to reduce compressor operation.

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.

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.

When in heating operation, or when outdoor air
temperature or enthalpy (optional) conditions are
high, economizer operation is locked out, and
actuator

During the occupied period, on a call for cooling,
when outdoor air temperature or enthalpy (optional)
conditions are low, the economizer actuator will
proportion
thermistor

to maintain between
discharge sensor.

is held at minimum

position.

The staging relay is used when the first stage
compressors
must provide mechanical cooling
when assisting the economizer.

50 °-F and 56 -oF at

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-o F range. During the occupied period,
the actuator will not close past the minimum
position.

The staging relay can be omitted when the second
stage compressors
can be used to assist the
economizer

with mechanical

cooling.

Lvli_

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

The minimum position potentiometer keeps the outdoor air
damper from closing completely during system operation
to provide ventilation,

If remote control of dampers is desired, connect the
remote potentiometer to P and P and turn it fully
clockwise before adjusting the minimum position.

1. Make sure the factory installed jumper is in place
across terminals P and P_.

Connect 24V AC to system and adjust the potentiometer 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

20W

---_13£
I-uJ

<;__ d0-

lid

_O
zo:

uJ:E

40-

:_ow
_t)>
__wO 5oXQ_O

e0 ::..i_ O>
0::0 w
aw(.9

:EwZ

_,_

:_Wz°
_-o
80W (j

_ ,,0,< 60-

Q:.q

70-

wI
D

'
'

EXAMPLE
ENTHALPY

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.

MlcroMeU
Call Toll-Free: 1-800-662-4822
Fax: 1-317-543-5986

_,1

FOR DETERMINING
CONTROL SETTING
(1008-0100)

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

LII

_L''-

Enthalpy Changeover Set
Point

._.iMinimum
Damper
Position Setting
.._p...--.--LEDLights up to
indicate Outdoor Air is
Suitable for Free
Cooling
W7459 Logic Module

icroMetlWest
Call Toll-Free: 1-800-884-4662
Fax: 1-775-356-9184

Manufac_rer reservesthe rightto discontinue,or change at any time, specifications,designsand priceswithoutno'_ceand withoutincurnngobligations.
Copyhght MicroMetl Corporation 2001. All rights reserved.
12

Features:

SUBMITTED TO

• 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
• 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.

COMPANY:

M. HARGIS

DRAWN BY:
JOB NAME:
EQUIPMENT:
NOTES:

Supply air
cover panel
shipped on
HVAC unit.

Carrier Unit No.
48/50GS

Economizer

50JS 048-060

P.N.

of prepaint steel.

Carrier P,N.

0637-0211

48/50GX. 50GL 48GP 042-060
50JX, JZ 042-048

(NOTE 1)

CPECOMZR004A00

50JX, JZ 060

0637-0311

CPECOMZR006A00

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

SIDE

VIEW

Down Discharge
Replacement panel
shipped with
economizer

Filters

Hinged
latched door for
down discharge
filter access

Aluminum

water

entrainment
filter

outside air
damper

THIS OOCUMENT

"
Economizer's barometnc
relief damper
(For down discharge only)

IS THE PROPERTY

OF MICROM ETL CORPORATION

MICROMETLCORPORATION*3035N

with
water entrainment

"-....
_,.

filter

AND IS DELIVER E D UPON THE EXPRESS

SHADELANDAVENUE,SUITE300

° INOIANAPOLIS,

CONDITION

THAT THE CONTENTS

IN 46226*l-800-662-4822_MICROMETLWES

WILL NOT BE DISCLOSED

O R US ED WITHOUT

T°202SOUTH

°SPARKS,NV

18THS-

MICROMETL'S

WRI_

89431 ol 800-884-466E

EN CONSENT

Ilk 582A-42-1

/ 48/50-103SI

Catalog

No. 534-80093

Page 16

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Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 3, 2, 1, 4
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CARRIER Controls And HVAC Accessories Manual L0210306

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