Engineered air PD SERIES Installation, Operation And Maintenance Manual Download Page 19

A

   

PD MANUAL

 

 

IOM-39 

19 of 36 

Aug 99 R1 

 

OPERATION

 

 

Warning:

 

This

 

unit

 

is

 

connected

 

to

 

high

 

voltages.

 

Electrical

 

shock

 

or

 

death

 

could

 

occur

 

if

 

instructions

 

are

 

not

 

followed.

 

This

 

equipment

 

contains

 

moving

 

parts

 

that

 

can

 

start

 

unexpectedly.

  

Injury

 

or

 

death

 

could

 

occur

 

if

 

instructions

 

are

 

not

 

followed.

  

All

 

work

 

should

 

be

 

performed

 

by

 

a

 

qualified

 

technician.

 

Always

 

disconnect

 

and

 

lock

 

out

 

power

 

before

 

servicing.

 

DO

 

NOT

 

bypass

 

any

 

interlock

 

or

 

safety

 

switches

 

under

 

any

 

circumstances.

 

 

 

 

Warning:

 

Proper

 

commissioning

 

and

 

start

up

 

of

 

the

 

air

 

handling

 

system

 

is

 

the

 

responsibility

 

of

 

the

 

installing

 

contractor.

 

It

 

is

 

recommended

 

that

 

an

 

air

 

balance

 

be

 

completed

 

by

 

a

 

certified

 

air

 

balancing

 

contractor

 

to

 

insure

 

the

 

air

 

volume

 

being

 

delivered

 

matches

 

the

 

unit

 

rating

 

plate.

 

Failure

 

to

 

perform

 

a

 

proper

 

air

 

balance

 

can

 

cause

 

injury

 

or

 

death,

 

damage

 

to

 

the

 

equipment,

 

property

 

damage,

 

system

 

operational

 

problems,

 

or

 

be

 

a

 

cause

 

of

 

poor

 

air

 

quality.

 

Moisture

 

carry

 

over

 

can

 

result

 

from

 

improper

 

air

 

flow.

 

 

 

This

 

unit

 

may

 

incorporate

 

one

 

or

 

more

 

functions

 

and

 

a

 

variety

 

of

 

controls

 

and

 

options

 

to

 

suit

 

individual

 

requirements.

  

A

 

description

 

of

 

the

 

unit

 

functions

 

and

 

options

 

is

 

shown

 

on

 

the

 

Electrical

 

Data

 

Sheet

 

and

 

unit

 

wiring

 

diagram.

  

Carefully

 

check

 

your

 

wiring

 

diagram

 

to

 

verify

 

that

 

all

 

remote

 

controls

 

are

 

properly

 

located

 

and

 

correctly

 

field

 

wired.

 

 

Dehumidification

 

systems

 

first

 

cool

 

the

 

air

 

with

 

an

 

evaporator

 

coil

 

operating

 

below

 

the

 

dew

 

point

 

temperature,

 

at

 

which

 

time

 

moisture

 

is

 

removed.

  

The

 

cool

 

air

 

is

 

then

 

reheated

 

back

 

to

 

the

 

required

 

supply

 

air

 

temperature.

  

Reheat

 

is

 

generally

 

accomplished

 

using

 

a

 

second,

 

parallel,

 

internal

 

condensing

 

coil

 

to

 

provide

 

the

 

necessary

 

amount

 

of

 

reheat.

  

In

 

some

 

cases,

 

a

 

secondary

 

heat

 

source

 

may

 

be

 

used

 

to

 

reheat

 

the

 

air

 

i.e.

 

electric

 

or

 

gas

 

fired

 

heat

 

exchanger.

  

Condenser

 

reheat

 

systems

 

may

 

employ

 

either

 

a

 

switched

 

or

 

modulating

 

control

 

system.

  

Excess

 

heat

 

may

 

be

 

removed

 

using

 

the

 

outside

 

condenser,

 

and/or

 

a

 

pool

 

water

 

heat

 

exchanger,

 

depending

 

on

 

the

 

system

 

arrangement.

   

 

Some

 

equipment

 

may

 

contain

 

programmable

 

unitary

 

controllers

 

or

 

programmable

 

logic

 

controllers

 

(PLC).

  

Additional

 

information

 

can

 

be

 

obtained

 

from

 

the

 

specific

 

programmable

 

control

 

manufacturer.

 

Often

 

this

 

information

 

is

 

available

 

from

 

the

 

control

 

manufacturer’s

 

website.

 

 

COOLING

 

COMPONENTS

 

 

Refer

 

to

 

the

 

wiring

 

diagram

 

and

 

unit

 

function

 

for

 

specific

 

information.

  

Standard

 

pressure

 

control

 

settings

 

are

 

found

 

on

 

page

 

34

 

and

 

the

 

following

 

notes.

  

Application

 

specific

 

control

 

settings

 

are

 

noted

 

on

 

the

 

wiring

 

diagram

 

and

 

in

 

the

 

unit

 

function.

 

 

1.

 

Hermetic

 

Compressors:

 

 

a.

 

Low

 

Pressure

 

Controls:

 

All

 

compressors

 

have

 

an

 

auto

reset

 

low

 

pressure

 

control

 

with

 

contacts

 

that

 

open

 

at

 

low

 

Summary of Contents for PD SERIES

Page 1: ...TORY USA HEAD OFFICE AND FACTORY CANADIAN EASTERN FACTORY 1401 HASTINGS CRES SE CALGARY ALBERTA T2G 4C8 Ph 403 287 2590 Fx 888 364 2727 32050 W 83rd STREET DESOTO KANSAS 66018 Ph 913 583 3181 Fx 913 5...

Page 2: ...And Degreasing Of Water And Glycol Coils 14 Heat Transfer Fluids 14 Pool Water Piping 15 Before Start Up 15 Start Up Check List 15 Operation 19 Cooling Components 19 Refrigerant Handling 21 Compressor...

Page 3: ...o control the relative humidity to minimize the associated problems The primary function of a pool dehumidifier PD series unit is to manage the humidity levels within the facilities This helps to redu...

Page 4: ...lterations or where ENGINEERED AIR s installation and service requirements have not been met The foregoing warranty is in lieu of all other warranties express or implied ENGINEERED AIR specifically di...

Page 5: ...internal damage Remove protective covers and check for internal damage Replace covers if the unit is not being assembled or installed at this time Open access doors and check for internal damage Close...

Page 6: ...e Part 1 C S A Standard C22 1 Provincial and Local Codes and in accordance with the local authorities having jurisdiction 2 This unit shall be electrically grounded in accordance with the latest editi...

Page 7: ...ion 5 The installation of this unit shall be in accordance with all other National State and Local Codes and in accordance with the local authorities having jurisdiction MINIMUM CLEARANCE TO COMBUSTIB...

Page 8: ...nstructed on a structural steel base frame The unit base frame is equipped with lifting lugs specifically located to facilitate proper lifting of the unit Spreader bars must be used to keep rigging aw...

Page 9: ...the unit As a minimum sleepers that are installed perpendicular to the length of the unit must be continuous across the width of the unit and shall be installed at the end lifting point base rails and...

Page 10: ...ame of adjacent sections This may require personnel to work under the unit during assembly Injury or death can result from improper support or improper loading of the curb Additional temporary support...

Page 11: ...led unit When ordered factory installed pipe chases and or electrical chases are built into the unit floor Factory chases are provided with covers that need to be replaced and sealed after piping and...

Page 12: ...ad Amps 1 Maximum Total Length of Run 50 Ft 100 Ft 150 Ft 200 Ft 250 Ft 300 Ft 350 Ft 400 Ft 450 Ft 500 Ft 15 m 30 m 45 m 60 m 75 m 90 m 105 m 120 m 135 m 150 m 1 16 AWG 16 AWG 16 AWG 16 AWG 16 AWG 16...

Page 13: ...coil connections when installing piping For refrigerant coils all piping is to be installed by a qualified refrigeration mechanic All refrigeration specialties shall be installed using good refrigera...

Page 14: ...rain traps FLUSHING AND DEGREASING OF WATER AND GLYCOL COILS Coil tubing may contain material or residue from manufacturing transportation or storage To prevent possible damage to other components in...

Page 15: ...pass any interlock or safety switches under any circumstances The start up and operation must be in accordance with safe practices Start up must be performed by qualified personnel Complete attached s...

Page 16: ...kwards will typically have low head pressure high suction pressure and are usually noisy Screw compressors MUST be checked with a phase meter before starting If rotation is incorrect instantaneous per...

Page 17: ...orator coil allowing the evaporator to have the most efficient moisture removal The bypass is factory set to a default value and must be field adjusted to ensure proper operation With the system runni...

Page 18: ...possible for conditions other than low refrigerant charge to cause the sight glass to bubble Bubbling may occur when condenser fans cycles on superheat setting is too low or filter drier is plugged e...

Page 19: ...ur wiring diagram to verify that all remote controls are properly located and correctly field wired Dehumidification systems first cool the air with an evaporator coil operating below the dew point te...

Page 20: ...or a separate device 4 Head Pressure Control Head pressure controls are designed to maintain an adequate operating head pressure to allow the TX valve and other components to work correctly Low head...

Page 21: ...R134a 150 psig 1040 kPa R407C 270 psig 1870 kPa R410A 370 psig 2550 kPa Caution When recovering refrigerant from a system equipped with a water cooled condenser the water valve must be manually opened...

Page 22: ...the oil completely and add the compressor manufacturers measured oil charge for replacement compressors before placing the compressor into operation Contact the compressor manufacturer for the type a...

Page 23: ...refrigerant into the system slowly until the system sight glass is clear The system must be at design air flow and load If the system is equipped with an Engineered Air Intercooler sight glass only r...

Page 24: ...igerant and the rest of the circuit will be out of gas 4 To check for refrigerant in the inactive coil install a refrigerant gauge on the inactive condenser coil reheat pool heat or condenser coil and...

Page 25: ...nt determine and fix the cause Properly remove and dispose of the contamination Properly clean and sanitize the affected area using only approved sanitizers suitable for HVAC equipment To provide a ma...

Page 26: ...ssible without slipping in the pulley grooves Belt deflection 3 4 19mm for each foot 300mm of span between the pulleys FOR FANS EQUIPPED WITH PILLOW BLOCK BEARINGS Belt Deflection Allow 1 64 0 4mm of...

Page 27: ...15 16 49mm 69 in lb 7 8 Nm 155 in lb 17 5 Nm 228 272 in lb 26 31 Nm 2 3 16 56mm 87 in lb 9 8 Nm 155 in lb 17 5 Nm 228 272 in lb 26 31 Nm 2 7 16 62mm 147 in lb 16 6 Nm 155 in lb 17 5 Nm 228 272 in lb...

Page 28: ...2000 2500 3000 3500 4000 4500 Shaft DIA 11 16 3 3 2 1 1 1 1 1 1 15 16 2 7 16 3 2 2 1 1 2 11 16 2 5 16 2 2 1 1 3 7 16 3 15 16 1 1 Suggested initial greasing interval If safety permits re lubricate whi...

Page 29: ...ease having these properties are Shell Alvania No 2 Mobil Mobilith AW2 Mobilith SHC100 Texaco Premium RB2 American Rykon Premium 2 Lubricate bearings prior to extended shutdown or storage and rotate s...

Page 30: ...E 20 160 SAE 30 180 SAE 40 Static oil level should be at the center of the lower most roller do not overfill MOTOR LUBRICATION Refer to motor manufacturer for lubrication recommendations On motors hav...

Page 31: ...the best service interval To clean rinse with water Shake off excess water and re install These filters do not require an oil adhesive Pleated Throwaway and or Replaceable Media Cartridge Bag Replace...

Page 32: ...C glycol or other suitable fluid COATING MAINTENANCE Most natatorium HVAC equipment will have an epoxy interior coating Regularly inspect the coating for integrity Touch up epoxy paint is readily avai...

Page 33: ...capacity and increased refrigerant head pressure Should this condition occur the condenser coil should be chemically cleaned or replaced Air Cooled The external surface of finned coils can be cleaned...

Page 34: ...noted above or the maximum rated working pressure of the receiver or 90 of the receiver PRV Hot gas bypass Start to open pressure 52 psig 350 kPa 30 psig 210 kPa 105 psig 720 kPa CFC1 Cut In 290 psig...

Page 35: ...ssor discharge temperature switch tripped Reset switch and check refrigerant charge Ice formation on evaporator coil Cold inlet temperature Raise the entering air temperature Air filters dirty Replace...

Page 36: ...scharge Compressor 1 psig psig Compressor 2 psig psig Compressor 3 psig psig Compressor 4 psig psig Compressor 5 psig psig Compressor 6 psig psig Compressor 7 psig psig Compressor 8 psig psig Condense...

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