Lifebreath 2500IFD Specification sheet

* LEAVE FOR HOMEOWNER

NOTE: Due to ongoing research and product development, specifications,

ratings and dimensions are subject to change without notice.

Installing Contractor

Telephone / Contact

Serial Number

Installation Date Model

TO BE COMPLETED BY CONTRACTOR AFTER INSTALLATION

CAUTION

Before installation, careful consideration must be given to

how this system will operate if connected to any other piece

of mechanical equipment, i.e. a forced air furnace or air

handler, operating at a higher static. After installation, the

compatibility of the two pieces of equipment must be

confirmed by measuring the airflow’s of the Heat Recovery

Ventilator (HRV) Energy Recovery Ventilator (ERV) by

using the balancing procedure found in this manual.

It is always important to assess how the operation of any

HRV/ERV may interact with vented combustion equipment

(ie. Gas Furnaces, Oil Furnaces, Wood Stoves, etc.).

NEVER install a ventilator in a situation where its normal

operation, lack of operation or partial failure may result

in the backdrafting or improper functioning of vented

combustion equipment!!!

IMPORTANT - PLEASE READ THIS

MANUAL BEFORE INSTALLING UNIT

OPERATION AND

INSTALLATION MANUAL

TI-59

1203

For Models:

2500IFD

2500EFD

Introduction

These Heat Recovery Ventilators (HRVs) are designed

for commercial and industrial applications to provide

fresh air to a building while exhausting an equal

amount of stale air. During the winter months the

incoming cold fresh air is warmed by utilizing the heat

recovered from the stale air before it is exhausted to

the outdoors. During summer months when the indoor

space is air conditioned, the Heat Recovery Ventilator

will help in cooling the incoming fresh air with the stale

air that is being exhausted.

Table of Contents

Introduction .................................................................... 2

Select Correct HRV......................................................... 3

Specifications - Model 2500IFD .................................. 4

Specifications - Model 2500EFD ................................. 5

Options & Accessories ....................... 6

Operation Instructions ................................................... 7

Installation Tips ............................................................. 7

Remote Controls ........................................................... 8

User Adjustable Defrost ................................................ 8

Defrost Control .............................................................. 8

Fan Defrost ................................................................. 9

Location ...................................................................... 9

Mounting ..................................................................... 9

Drains ......................................................................... 12

Ducting ......................................................................... 12

Return and Supply ....................................................... 13

Air Flow Balancing ....................................................... 14

The Integrated HVAC System ...................................... 15

Electrical Connections ................................................. 15

Maintenance ................................................................ 15

Wiring Diagram ........................................................... 17

Ladder Diagram .......................................................... 18

Warranty .................................................................... 19

I F D

2500

Interior

mount Fan Defrost

E F D

2500

Exterior

(roof mount) Fan Defrost

MAKE UP HEAT REQUIREMENT at 1200 CFM (566L/s)

Nominal Nominal Nominal

Outdoor Temp. kW Req. for kW Req. for kW Req. for

C° F° 20°C (68°F) 25°C (77°F) 30°C (86°F)

Air Delivery Air Delivery Air Delivery

0 32 7 10 14

-10 14 10 14 17

-20 -4 12 15 19

-30 -22 15 19 22

-40 -40 17 21 24

Selecting the Correct Size HRV

Commercial and Institutional Requirements

For outdoor air requirements, ASHRAE has produced the Ventilation Standard 62-1989

that is used to determine acceptable ventilation rates. This standard is referenced directly or

used as “Good Engineering Practice” in most Code documents or design criteria.

Small restaurants, Donut Shops and Fast food stores

Seats 40

Employees 5

Total 45

ASHRAE requirement 20 cfm (10 L/s) per person

Ventilation required 45 x 20 = 900 cfm (450 L/s)

Bank

Customers 25

Staff 9

Total 34

ASHRAE requirement 20 cfm (10 L/s) per person

Ventilation required 34 x 20 = 680 cfm (320 L/s)

Bar or Tavern

Seats 50

Employees 7

Total 57

ASHRAE requirement 30 cfm (15 L/s) per person

Ventilation required 57 x 30 = 1710 cfm (855 L/s)

Bingo Hall

Customers 180

Staff 20

Total 200

ASHRAE requirement 30 cfm (15 L/s) per person

Ventilation required 200 x 30 = 6000 cfm (3000 L/s)

Classroom and School Portables

Seats 29

Teacher 1

Total 30

ASHRAE requirement 15 cfm (7.5 L/s) per person

Ventilation required 30 x 15 = 450 cfm (255 L/s)

Print Shop, Duplicating

Square footage of shop 2000 square ft

ASHRAE requirement 0.5 cfm / ft2(2.5 L/s - m2)

Ventilation required 2000 x 0.5 = 1000 cfm (500 L/s)

Beauty Salon

Customers 12

Employees 6

Total 18

ASHRAE requirement 25 cfm (12.5 L/s) per person

Ventilation required 18 x 25 = 450 cfm (255 L/s)

Swimming Pools

Refer to “Pool” Models Installation Manuals.

Supply to

building

Supply from

outside

Exhaust from

building

Exhaust to

outside

Heat

Exchanger

Service

Panel*

Filter

Service

Panel*

Electrical

Service

Panel*

47"

89.9"

38.4"

24"

16"

SIDE VIEW

FRONT VIEW BACK VIEW

*NOTE: Removable service access panels on both sides of 2500IFD cabinet.

38.4" 2"

24"

16"

Exhaust to Outside

Motors (2)

Supply to Building Drain Pans (2)

Heat Exchange Core

Exhaust from Building

4" Filters

Supply from Outside

SPECIFICATIONS

AIR FLOW

2100 cfm (985 L/s) at 1.0"wg ESP

PERFORMANCE

70% effective at 2500 cfm (1172 L/s)

CORE

Modular aluminum sensible heat recovery core.

Plate-to-plate type. Slides out of either side of cabinet for

service.

MOTORS

Two single shaft PSC, 3-speed, 208/230V,5.1 amps,

1 ph, 1 hp

BLOWERS

Two direct-drive centrifugal blowers, one per air stream.

FILTERS

Two 18" X 24" 4-inch pleated filters in each air stream.

DUCT CONNECTIONS

Four 24" X 16" (610mm X 406mm)

CABINET

20 gauge powder coated galvanized steel (G60) for

superior corrosion resistance. 16 gauge galvanized

frame, insulated with1.5" fibreglass insulation to prevent

condensation.

DRAIN

Two stainless steel drain pans with 1/2" NPT drain

spouts.

MOUNTING

Unit to be set on support brackets hung by threaded rod

type apparatus. Brackets and rod not provided.

CONTROLS

24V terminal strip inside electrical box, to connect

optional remote controls (not included), obtain on/off and

high/low functions.

DEFROST

Factory set defrost time (user adjustable).

Supply motor is shut off while exhaust air defrosts core.

WARRANTY

15 year warranty on heat exchanger, and 2 years

on parts.

WEIGHT

700 lbs.

SHIPPING WEIGHT

1100 lbs.

All units conform to CSA and UL standards.

Model 2500IFD

DATE: ______________________________________________PROJECT: ______________________________________

MECHANICAL CONTRACTOR: _________________________________________________________________________

TI-91I

1203

Hoods (2)

c/w Bug Screen

Motors (2)

Supply Duct

24"x16" Drain Pans (2)

Heat Exchange Core

Exhaust Duct

24"x16"

4" Filters

Supply Hoods

Exhaust

Hoods

Roof Curb

Heat

Exchanger

Service

Panel*

Filter

Service

Panel*

Electrical

Service

Panel*

47"

18"

18" 27"

89.9"

SIDE VIEW

BOTTOM VIEW

*NOTE: Removable service access panels on both sides of 2500EFD cabinet.

*NOTE: Roof curb is one inch smaller than outside dimensions of cabinet.

38.4" 28"

19.2"

44.95" 44.95"

Bottom duct

connections

16" X 24"

Centre

Point

Fresh Air

Supply

Hood Hood

Stale Air

Return

89.9"

8" 8" 21.8" 25" 8" 8"

12"

DATE: ____________________________________________PROJECT: ________________________________________

MECHANICAL CONTRACTOR:__________________________________________________________________________

Model 2500EFD

(ROOFTOP)

TI-91E

1203

All units conform to CSA and UL standards.

SPECIFICATIONS

AIR FLOW

2100 cfm (985 L/s) at 1.0"wg ESP

PERFORMANCE

70% effective at 2500 cfm (1172 L/s)

CORE

Modular aluminum sensible heat recovery core.

Plate-to-plate type. Slides out of either side of cabinet

for service.

MOTORS

Two single shaft PSC, 3-speed, 208/230V,5.1 amps, 1 ph,

1 hp

BLOWERS

Two direct-drive centrifugal blowers, one per air stream.

FILTERS

Two 18" X 24" 4-inch pleated filters in each air stream.

DUCT CONNECTIONS

Four 24" X 16" (610mm X 406mm) to and from the building

under cabinet.

Four 28" X 18" (711mm X 457mm) hoods

included on side of cabinet with screens.

CABINET

20 gauge powder coated galvanized steel (G60) for

superior corrosion resistance. 16 gauge galvanized

frame, insulated with 1.5" fibreglass insulation to pre-

vent condensation.

DRAIN

Two stainless steel drain pans with 1/2" NPT drain

spouts.

MOUNTING

Rooftop mounted on optional roof curb (Part No. 53-

2500)

CONTROLS

24V terminal strip inside electrical box, to connect

optional remote controls (not included), obtain on/off

and high/low functions.

DEFROST

Factory set defrost time (user adjustable).

Supply motor is shut off while exhaust air defrosts core.

WARRANTY

15 year warranty on heat exchanger, and 2 years on

parts.

WEIGHT

700 lbs.

SHIPPING WEIGHT

1100 lbs.

OPTIONAL CURB

WEIGHT 50 lbs.

AIRFLOWS (Each Air Stream)

1316 (2800)

1175 (2500)

1034 (2200)

893 (1900)

752 (1600)

611 (1300)

470 (1000)

329 (700)

188 (400)

47 (100)

AIRFLOW L/s (CFM)

50 75 100 125 150 175 200 225 250 275 300 325 350 375

(

0.1

) (0.2) (0.3) (0.4) (0.5) (0.6) (0.7) (0.8) (0.9) (1.0) (1.1) (1.2) (1.3) (1.4) (1.5)

400 425 450 475 500 525 550

(1.6) (1.7) (1.8) (1.9) (2.0) (2.1) (2.2)

EXTERNAL STATIC PRESSURE IN PASCALS (in. W.C.)

70%

60%

50%

850

(1800) 944

(2000) 1039

(2200)

TEMPERATURE EFFECTIVENESS

AIRFLOW IN L/s (CFM)

NOTE: Exhaust Relative Humidity (RH) at 40%

EFFECTIVENESS

1133

(2400) 1228

(2600) 1322

(2800) 1416

(3000)

HIGH SPEEDHIGH SPEED

MEDIUM SPEEDMEDIUM SPEED

LOW SPEEDLOW SPEED

Performance

Options and Accessories

99-101: CRANK TIMER

Mechanical timer to activate high speed.

99-116: DEHUMIDISTAT VENTILATION CONTROL (DVC)

Turns unit on/off via slider switch and high/low via built-in

dehumidistat.

99-130: DEHUMIDISTAT

Activates high speed when indoor humidity

rises above set point on control.

99-140: 4" TECHGRILLE

99-141: 5" TECHGRILLE

99-142: 6" TECHGRILLE

99-148: 8" TECHGRILLE

Round, white, step-type diffusers.

53-2500: OPTIONAL ROOF CURB

Supports HRV on roof and connects

HRV to ducting below.

WEIGHT: 50lbs

Information about design-built electric make-up heat

coils available upon request.

Duct Collar Supports

Return air

opening Factory installed

perimeter wooden

nailer strip

Supply air

opening

Bottom duct

connections

16" X 24"

8" 8" 21.8" 25" 8" 8"

12"

0.7"

TOP VIEW

14"

SIDE VIEW

Centre

Point

Fresh Air

Supply

Stale Air

Return

36.5"

88.5"

Roof Curb (optional)

Part No. 53-2500

Operation Instructions

The LIFEBREATH 2500 series HRV is designed

tobe operated continuously or intermittently to meet

the requirements of the application.

Continuous Operation

For continuous operation, a simple jumper across

the ON/OFF and COMMON jumper terminals is

needed. HIGH/LOW speed selection requires

another jumper across HIGH/LOW and COMMON;

select as required (see below and wiring diagram).

Internittent Operation

Due to variance in the times in which buildings are

occupied and equipment or machinery operated,

intermittent ventilation may be the preferred

method.

Dry contacts located inside the electrical panel

enable this unit to turn ON and OFF, and/or jump

between HIGH and LOW speeds when optional low

voltage controls are connected (see above and

pg. 9).

Optional Remote Controls

Basic controls such as dehumidistats, mechanical

crank timers, 24-hour timers or toggle switches can

be used to control the unit (see pg. 9).

Installation Tips

1. Whichever method is chosen to operate the

2500, keep in mind that Air-to Air exchangers

in general are not "booster fans" and are

normally sized to ventilate at a steady rate.

To achieve optimum performance from the

2500, the desired ventilation rate (speed of

the system) should be reached before the

contaminant to be removed has reached

its maximum.

EXAMPLE: A bingo hall opening at 7:00PM that is

sized for 5000 cfm should have at least this amount

of air exchange by that time. If the unit is not turned

on or set to its designated speed until after the con-

taminant has reached an uncomfortable level, then

it may result in a number of hours

passing before the system could catch up.

2. It is highly recommended that back draft

dampers be installed in the supply and

exhaust duct work to the outside, to prevent

air from entering in through the HRV when the

unit is off. Failure to install back draft

dampers may result in damage to HVAC

equipment and/or other building components.

ON/OFF

Low Voltage-24VAC

HIGH/LOW

T3 - On/Off

T2 - High/Low

T1 - Common

Off 1020

DEHUMIDISTAT

Optional Remote Controls

OFF

HIGH

LOW

Supplied

and Installed

by Contractor

Dehumidistat

SettingRelativeto

OutsideConditions

WINTER:

Setdehumidistat

between30%to40%.

Ifhomeis toodry,

adjusttohighersetting.

If homeis toohumid,

adjusttolowersetting.

SUMMER:

Setdehumidistat

toOFF.

User Adjustable Defrost

DEHUMIDISTAT VENTILATION CONTROL*

LOCATION: Spa or pool area, anywhere that humidity

is a concern. (connect 1/unit only)

• Ventilation control turns HRV system OFF and ON.

• Dehumidistat increases ventilation when required

• High speed override switch

Red - common / Black - hi/low / Orange - on/off

PART NO. 99-116 c/w 3 wire cable 60' (18m)

REMOTE DEHUMIDISTAT

LOCATION: Spa or pool area, anywhere that humidity

is a concern.

• Provides high speed ventilation when humidity level

exceeds selected setting.

PART NO. 99-130

CRANK TIMER

•Provides high speed ventilation as required.

Crank Timer - 60 minute

PART NO. 99-101 ON/OFF

HIGH/LOW

COMMON

ON OFF

hrs

0.2

0.4 0.6

0.8

1.0

Factory pre-set dial positions

DO NOT ADJUST

Defrost timer device

(see wiring diagram

for location)

Yellow (outer dial)

adjusts length of time

between defrost cycles

(OFF cycle)

Orange (center dial)

adjusts time spent in

defrost mode

(ON cycle)

Orange

Yellow

ON OFF

OPERATION

Once the snap disk senses temperatures below

-3˚C (27˚F), it will activate the defrost mode,

which begins with the Defrost OFF cycle, and

then continues into the Defrost ON cycle.

Factory pre-set defrost

cycle and time are:

DEFROST ON

=.15 HR. (10 mins)

DEFROST OFF

=.50 HR. (30 mins)

32ºF (0ºC) No defrost required

13ºF (-11ºC) 10 mins. defrost ON - 30 mins. defrost OFF

-40ºF (-40ºC) 15 mins. defrost ON - 30 mins. defrost OFF

EXAMPLES OF DEFROST CYCLES

Fan Defrost

The Models 2500IFD and 2500EFD are equipped with

an electronically controlled fan defrost system to remove

frost that collects on the warm air side of the aluminum

heat transfer surfaces of the heat exchanger core.

When the outside temperature drops below 27˚F(-3˚C),

a defrost timer is activated which provides for an auto-

matic defrost cycle. During the automatic defrost cycle,

the fresh air supply is shut off while the exhaust fan

continues to operate. Both the times between defrost

cycles and the length of time spent in defrost are

adjustable (see pg. 9 for details). This allows warm

inside air to flow over the heat exchanger core, melting

any frost accumulation. After the defrost period, the

fresh air supply fan automatically returns to the normal

speed and fresh outside air continues to be drawn into

the building. Water from the melted frost collects in the

bottom drip pans and drains out through the bottom

drain connections. The defrost cycle repeats automati-

cally until the air temperature rises above 27°F (-3°C).

Location

The 2500EFD is designed to be mounted outdoors, usual-

ly fastened to a roof curb assembly. Special care and

attention should be given to positioning the cross mem-

bers of the roof curb, so that they line up exactly with the

duct openings on the HRV (see pg. 7). The 2500IFD

must be located in a heated space where the surrounding

air temperature does not fall below freezing point. The

exhaust air temperature must be above 60˚F (16˚C) for

proper defrost operation.

If the air temperature is too low the defrost time may

need to be increased. The unit must be mounted level

(horizontal) to obtain proper drainage of water from the

heat exchange cores and drip pans.The warranty will be

void if these conditions are not met.

Typically, the HRV is positioned close to an outside wall or

the roof to simplify the connections and keep the length of

insulated ducting to a minimum.

A minimum clearance of 40 in. (1 m) on one side of the

HRV is recommended to service the heat exchanger

cores and the filters.

Mounting

The 2500EFD is designed to be mounted on a roof curb.

When assembling the curb, note position of cross

members which provide duct support. Note access

through the roof will be required.

It is also important to ensure that the perimeter of the

curb is insulated, but the interior of the curb is not. This

allows heat from the building to prevent freezing of the

drain lines and pans.

The 2500IFD should be hung by a threaded rod

type assembly which provides a cradle for the unit

(see pg. 11). Note that 2X4's should sit under the unit to

avoid damage to the lip of the cabinet. The HRV may

also be mounted on an equipment platform provided that

the drain hoses are clear and there is sufficient space for

service access.

STALE AIR

TO OUTSIDE

FRESH AIR

FROM OUTSIDE

STALE AIR

FROM INSIDE FRESH AIR

TO INSIDE

FILTERS MOTORS

BLOWERCORE

BLOWERDRAIN PANS

P-TRAP

Mounting the 2500

2500EFD

Roof mount

NOTE: Roof curb is one inch smaller than outside

dimensions of cabinet

Roof curb

2500IFD

Platform mount (not provided)

Mount unit on wooden or metal support

assembly. Unit must be raised an adequate height

for installation and slope of drain lines.

Vibration isolators

May be anchored to floor,

leaving space for drain connections.

2500IFD

Saddle mount (not provided)

Hang unit with threaded rods and U channel members.

2 X 4 under unit and

on top of hanging bracket

to prevent weight of unit from

being put on lip of cabinet

Threaded rods

U channels

Lip

* NOTE: When installing your

Lifebreath®HRV, flexible

duct connectors should be

installed between the HRV

and the galvanized ductwork

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