EMI S2HB Installation, Operation and Maintenance Manual

EMI AMErIcA SErIES

MultI-ZonE HEAt PuMP condEnSIng unItS

S2HB, T2HB, T3HB, and

T4HB HeaT PumPS

Nominal Circuit Capacities:

9,000 12,000 18,000 & 24,000 Btuh units.

S2HB Multi-Zone

T2HB, T3HB, & T4HB

Multi-Zone

Enviromaster International LLC

5780 Success Dr.

Rome, NY 13440 www.enviromaster.com

An ISO 9001-2000 Certified Company

P/N# 240006458 Rev. B [10/08]

EMI AMErIcA SErIES MultI-zonE HEAt PuMP condEnSIng unItS inSTallaTion, oPeraTion and mainTenanCe manual

This manual is intended as an aid to qualified service personnel for proper installation, operation, and maintenance of these EMI America Series multi-zone heat pump condensing units. Read the instructions thoroughly and carefully before attempting installation or operation. Failure to follow these instructions may result in improper installation, operation, service, or maintenance, possibly resulting in fire, electrical shock, property damage, personal injury, or death.

Shipping Damage MUST be Reported to the Carrier IMMEDIATELY!!!

Examine the carton for signs of damage if any is evident open packaging and check the unit for shipping damage.

To THe inSTaller

(1) Retain this manual and warranty for future reference.

(2) Before leaving the premises, review this manual to be sure the unit has been installed correctly and run the unit for one complete cycle to make sure it functions properly.

To obtain technical service or warranty assistance during or after the installation of this unit, check our website @ www.

enviromaster.com

or call your installing contractor or distributor. Our technical service department may be contacted at

1-800-228-9364.

When calling for assistance, please have the following information ready:

• Model Number___________________

• Serial Number___________________

• Date of installation________________

!

dAngEr

!

Tampering with the emi america

Series condenser is dangerous and may result in serious injury or death. Tampering voids all warranties. do not attempt to modify or change this unit in any way.

multi-zone Heat Pump Condensing units 2

SaFeTY inSTruCTionS

Read all instructions before using the EMI America Series multi-zone heat pump condenser. Install or locate this unit only in accordance with these instructions. Use this unit only for its intended use as described in this manual.

Check the rating plate on the EMI

America Series multi-zone heat pump condenser before installation to make certain the voltage shown is the same as the electric supply to the unit.

The EMI America Series multi-zone heat pump condenser must be connected only to a properly grounded electrical supply. Do not fail to properly ground this unit.

Turn off the electrical supply before servicing the EMI America Series multi-zone heat pump condenser.

Do not use the EMI America Series multi-zone heat pump condenser if it has damaged wiring, is not working properly, or has been damaged or dropped.

[Save These instructions]

Recognize this symbol as an indication of important

! safety information.

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EMI AMErIcA SErIES MultI-zonE HEAt PuMP condEnSIng unItS deSCriPTion

EMI offers the finest multi-zone heat pump outdoor units in the ductless split market, the

S & T series (S2HB, T2HB, T3HB & T4HB)

Condensing Units. The S & T series (S2HB,

T2HB, T3HB & T4HB) allows the installation of two or more circuits from a single outside location when space or aesthetic requirements limit the use of the number of cabinets outdoors. Each zone is independent so no mixing of refrigerant occurs.

When specifying heat pump(s), it is recommended that the matching indoor unit(s) be equipped with electric heat. All 9,000, and

12,000 Btuh circuit units are equipped with the

Duratec Performance Package which includes a large capacity suction accumulator with surge baffles and enhanced oil management, and a factory installed solid core filter drier. All

18,000 and 24,000 Btuh circuit units include a solid core filter drier and high pressure limit switch. The 18,000 Btuh circuits also include a large capacity suction accumulator with surge baffles and enhanced oil management.

noTe: The crankcase heater is installed with 9,000 and 12,000 Btuh heat pumps.

ConTrolS and ComPonenTS

(FACTORY INSTALLED OR SUPPLIED)

• Compressor and Fan Motor Contactor

• Capacitor

• Low Voltage Connections

• Large Capacity Suction Accumulator (9,

12, & 18 Only)

• High Pressure Control (18 & 24 Only)

• Solid Core Filter Drier

• Thermostatically controlled crankcase heater

(9&12 Only)

• Common suction pressure access point

• Hard Start Capacitor

Thermostatically controlled crankcase heater

– This feature energizes the crankcase heater only when needed, removes the heater from the electrical circuit at conditions where it’s not required, saving unnecessary Watts, and increasing overall system efficiency. multi-zone Heat Pump Condensing units

SiTe PreParaTion

Place the unit on a flat concrete surface or pad if on the ground. Roof mounting should use a build up platform. Piping is through the wall or roof directly to the unit. In areas of heavy snowfall, condensers should be set above the level of maximum anticipated snowfall (12” is usually adequate).

3

SYSTem oPTionS

• Sea Coast Style Coated Coils /

Copper-Copper coils

• Wind Baffles - Louvers • inSTaller SuPPlied iTemS

• Power wiring

• Low Volt wiring - 18 AWG minimum

• Secure mounting pad or foundation

• Refrigerant piping

• Disconnect switch iTemS For ConSideraTion

• Locate the unit as close to the indoor section as possible. Maximum length allowed is 100 equivalent feet.

• Avoid high traffic areas and prevailing wind locations.

• Surface must be level.

• Mount unit above typical snow levels.

Ensure free air flow through the unit. Air must not recirculate from discharge to intake. Air is drawn through the coil with side or top and discharged through the fan grille.

A minimum 48” clearance is necessary for the condenser discharge. Intake

(coil side) clearance is 12” minimum.

Consider how power will be run to the unit from the power source. Refrigerant piping must be a direct line to the indoor unit.

Heat pump units produce condensate in the heat pump mode. Water will drain from the unit at the base. Place the unit so as not to create a hazard for pedestrians.

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S2HB InStAllAtIon InStructIonS SEctIon noTe: For T2HB, T3HB, & T4HB installation refer to the T2HB, T3HB, & T4HB

Installation Instruction section in this manual.

S2HB uniT mounTing SeCTion

Side discharge unit allows for permanent mounting through the feet. This is highly

recommended due to the vertical design of the unit.

1. Loosen the screws on left and right sides of the front panel. (Do not remove these screws.)

Accumulator Compressor Capacitor

Filter Driers

Lag Bolts

5. Insert lag bolts through the holes in the bottom of the unit and tighten to secure.

2. Remove the screws on the front of the panel.

3. T o remove front panel:

4. S lide front panel forward to clear side screws and remove. multi-zone Heat Pump Condensing units 4

6. Insert lag bolts through the holes in the feet on the back of the unit and tighten to secure.

7. Replace the front panel, do not tighten the side screws at this time.

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S2HB ElEctrIcAl WIrIng InStAllAtIon SEctIon

! dAngEr !

The EMI America Series condensing unit must:

• Be connected to a properly grounded electrical supply with the proper voltage as stated on the rating plate.

• Have proper over current protection (i.e. time- delay fuse/HACR-Breaker) as listed on the Rating Plate.

Failure to follow these instructions can result in a fire, explosion, or electrical shock causing property damage, personal injury, or death.

3. Use only HACR type breakers or time delay fuses. Select the wire size according to the ampacity rating.

4. To access electrical connections and wiring diagram: a) Remove the screws on the side panel adjacent to the back panel.

b) The screws adjacent to the front panel should already be loose (don't remove them).

!

dAngEr

!

Do not use the EMI America Series condensing unit with any electrical supply voltage other than the one listed on the rating plate.

Check the rating plate on the unit for the correct voltage rating. Failure to use the correct voltage may result in death, serious bodily injury or property damage. If you have any questions or doubts, consult the factory before installing this unit.

c. Slide the side panel out to access the high/low electrical connections and wire diagram.

1. All electrical wiring must be run according to NEC and local codes.

2. Refer to the unit rating plate for voltage, minimum circuit ampacity and over current protection requirements.

Rating

Plate

Note: Remove the plastic edge guards from the holes and replace with a watertight strain relief fitting (High V) and a split grommet fitting (low V)

5. Power should be run to a weather proof disconnect box usually within 3 feet of the unit.

6. From the disconnect box, run the power through the 7/8" hole on the side of the unit and into the electrical box and anchor with the strain relief fitting.

7. Run wires to the high Volt pigtail in the control box and attach L1 and L2 connections.

Also run green wire to ground wire.

multi-zone Heat Pump Condensing units 5 www.enviromaster.com

S2HB ElEctrIcAl WIrIng InStAllAtIon SEctIon

Inside electrical access panel.

Note:

Refer to the units’ wiring diagram for all wiring.

Wire diagram

8. Check wiring diagram for the required number of low voltage wires to be run between indoor and outdoor sections. low Volt Connection

Low Volt High Volt

Plastic edge guards

9. Connect the 24 Volt wiring matching color to color. Refer to the wiring diagram on the inside panel of the condenser, and also refer to the wiring diagram on the indoor unit. Low Volt interconnect should be at least 18

AWG.

10. T o replace side panel slide the slotted holes of the panel onto the loosened screws of the front panel so that the edge of the front panel covers the edge of the side panel.

Completed electrical Connections

11. Tighten all remaining loose screws.


t2HB, t3HB, And t4HB InStAllAtIon InStructIonS SEctIon noTe: For S2HB installation refer to the S2HB Installation Instruction in this manual.

After the T2HB, T3HB, or T4HB unit is positioned on the concrete slab or platform (refer to the Site Preparation in the front of this manual) the T2HB, T3HB, or T4HB is ready for installation:

1. Remove the screw on the back panel. eleCTriCal Wiring

1. All electrical wiring must be run according to NEC and local codes.

2. Refer to the unit rating plate for voltage, minimum circuit ampacity and over current protection requirements.

3. Use only HACR type breakers or time delay fuses. Select the wire size according to the ampacity rating.

2. R emove panel to expose eletrical wiring.

Mounting

Screw

Remove the four screws on the front panel

Low Volt

High Volt

3. L ocation of electrical and tubing connections on back of unit.

Common

Suction

Pressure

Access

Point

Vapor

(Suction)

Liquid High

Pressure

Reset

(18 & 24)

4. To access wiring diagram: a) Remove the four screws on the front panel of the unit and slide the panel down until the upper edge is free, then remove the panel.

b) The wiring diagram is located on the inside of the front panel.

D w iring iagram


t2HB, t3HB, And t4HB InStAllAtIon InStructIonS SEctIon eleCTriCal Wiring

5. with a screw

driver punch out and remove the knock-outs in the low & high Volt electrical connec

tion box.

Low Volt

Mounting

Screw

High Volt

Knock-out

Note:

Power should be run to a weather proof disconnect box usually within 3 feet of the unit.

6. From the disconnect box feed the high

Volt wires through a weather proof conduit and run the power through the 7/8" hole (from knock-out) in the unit’s electrical box. Anchor with a strain relief fitting.

Refer to the wiring diagram.

9. Connect the 24 Volt wiring matching color to terminal block designation for each zone as labeled. Refer to the wiring diagram on the inside front panel of the condenser, and also refer to the wiring diagram on the indoor unit. Low

Volt interconnect should be at least 18 AWG.

When connecting to the rear terminal strip there are two approaches. a) Using a long straight screw driver over the top of the front terminal strip while holding the wire with needle nose pliers from below. b) Remove the mounting screw (stubby screwdriver), then pull the entire front terminal strip forward, disengaging the tab on left from slot. When finished, reinsert terminal strip tab into slot and reinstall mounting screw.

7. Following the wiring diagram,

run wires to the High Volt pigtail in the control box and attach L1 and L2 connections. Also run green wire to ground lug.

8. Check wiring diagram for the required number of low voltage wires to be run between indoor and outdoor sections.

! CauTion !

Make sure that Low Volt wiring for each circuit is connected to the matching

Low Volt wiring.

10. R eplace the unit’s electric box cover and the front panel and tighten screws

.


MultI-zonE HEAt PuMP rEfrIgErAnt PIPIng InStAllAtIon noTe: Refrigerant Piping Installation for all of the multi-zone heat pump models. inTerConneCTing TuBing SPeCS

S2HB, T2HB, T3HB, & T4HB models:

Nominal

Circuit

Capacity

9,000

12,000

18,000

24,000

Maximum

Length

100’

100’

100’

100’

Maximum

Lift

35’

35’

35’

35’

Liquid

Line

OD

1/4”

1/4”

3/8”

3/8”

Suction

Line

OD

1/2”

1/2”

5/8”*

3/4”

* CAH24, UNH24, WLH24 Suction Connection size is 3/4” O.D. and must bush down to 5/8” for 18,000

Btuh circuits at the indoor unit.

The system will support refrigerant runs to the inside unit of up to 100' equivalent feet with a 35' rise included. The units are furnished with sweat connections and are equipped with refrigerant valves and

Schrader fittings for charging and taking pressure readings. The following precautions should be made:

• Be certain no burrs remain on the fittings.

• Use only clean refrigeration tubing.

• Use tube benders to guard against kinking.

• Avoid piping on wet and rainy days and insulate suction line. Be certain that plastic end caps remain in place when inserting through wall openings.

Isolate tubing from transmitting vibration to the building or unit and avoid contact with sharp edges. refrigeration valves should be wrapped with a wet rag "heat sink" to protect valves while brazing.

PiSTon/oriFiCe CHange KiT inSTallaTion

When a WLH24 or UNH24 air handler is matched with a T2HB or T3HB containing a 24,000 Btuh nominal capacity circuit, the air handler must have it’s stock piston changed from 0.059 to 0.063.

Air Handler

A 24,000 Btuh nominal circuit can be identified by the “4” in the model number capacity field (i.e.

T2HBx4xx). Refer to the instructions supplied with kit part number; 240006777.

Circuit Designators: 9 = 9000 Btuh • 2 = 12000 Btuh • 8 = 18000 Btuh • 4 = 24000 Btuh

(ex. - 8400 consists of one 18000 Btuh compressor and one 24000 Btuh compressor) model # air Handler

Condenser

Btuh

Factory installed

Piston/Orifice Size

Field Changeover

Piston/Orifice Size

WLH24 or

UNH24

T2HB2400

T2HB8400

T2HB4400

T3HB9940

T3HB9240

T3HB2240

.059” .063”

Note: T his kit is only supplied with the above Heat Pump models.


P-trAP InStAllAtIon

• A P-trap is recommended when the suction riser is equal to or greater than 20 feet in height.

• When the condenser is installed above the evaporator, the P-trap will help the return of oil back to the compressor.

• The placement of the P-trap should be at the halfway mark of the suction riser. For example if the suction riser is 30 feet tall then a P-trap is recommended at the 15 foot mark of the suction riser (see Figure #1).

• A P-trap may be fabricated using;

(2) street elbows and (2) regular elbows.

A prefabricated trap may be purchased from a Wholesaler or Distributor however the trap should be shallow as the:

(4) elbow configuration. Each elbow is approximately 2 equivalent feet. One Ptrap is equal to approximately 8 equivalent feet.

Figure #1

Condenser

Evaporator multi-zone Heat Pump Condensing units 10 www.enviromaster.com

MultI-zonE HEAt PuMP rEfrIgErAnt PIPIng InStAllAtIon

1. Clean the ends of tubing and insert into fittings.

2. Protect the valves by wrapping with a wet rag "heat sink" before brazing.

5. Verify that the correct piston for the system match is in place, refer to the air handler Installation Instructions.

6. Refer to the indoor air handler Installation Instructions for any specific details regarding the connection of tubing.

Connect and braze tubing into the indoor air handler.

7. Attach manifold set.

Manifold Vacuum Pump Micron Gage

3. The use of a shield is recommend (one can be made from some scrap metal) to protect the paint.

manifold Setup For evacuation

4. Braze tubing into fittings.

8. Evacuate line to 500 microns or less to ensure all moisture has been removed and there are no leaks.

!

WArnIng

!

It is illegal to discharge refrigerant into the atmosphere. Use proper reclaiming methods & equipment when installing or servicing this unit.


MultI-zonE HEAt PuMP rEfrIgErAnt PIPIng InStAllAtIon refer to refrigerant

Charge Table for specified line charge.

Note:

Charging should be done with a dial-a-charge or weighed in with a scale.

9. Once certain of a good evacuation and leak free joints, back-seat the valves

(counter-clockwise) to open and allow factory charge to fill lines and indoor unit.

10. Charge to proper weight, charge based on feet of interconnect (table on next page)

The units are delivered pre-charged with refrigerant for the condenser coil and the evaporator. Charging of the field installed piping is required. Refer to the refrigerant charge table for the proper amount to be added for the applications interconnect piping. Unit service valves are solid brass, for sweat connections.

IMPORTANT: All systems require field charge adjustments. Refer to the "Refrigerant Charge Tables" for proper weight charge and to the supplied “Field Charging

Charts" for proper system pressures and temperature at different outdoor conditions. Superheat should be used for final system charge in cooling mode. Subcool should be used for final system charge in heating mode.

11. Refer to Field Charging Charts to “fine tune” the refrigerant charge to meet your conditions. multi-zone Heat Pump Condensing units reCaP oF ComPleTing

PiPing ConneCTionS

Pressure test all field installed piping and the indoor air handler with nitrogen. Using a suitable vacuum pump, evacuate the tubing and indoor unit to 500 microns or less, with service values remaining front seated (closed).

Before releasing the refrigerant from the condenser, be sure the manifold gauge set is closed so as not to lose vacuum when shutting down the pump.

Release refrigerant from the condensing unit by back seating the service value. Allen wrenches are used to open the valve.

Replace valve caps. Be careful to not back seat the valves past the snap flanges that hold the valve core in place.

12 www.enviromaster.com

MultI-zonE HEAt PuMP rEfrIgErAnt PIPIng InStAllAtIon mulTi-Zone HeaT PumP reFrigeranT CHarge TaBle

Circuit

Capacity Btuh

9000

12000

18000

Evaporator

Pairing

WLH09

CAH12

UNH09

WLH12

CAH12

UNH12

WLH24

CAH24

UNH24

Line

Chg/ft

0.25 oz

0.25 oz

0.56 oz

Line

Length

10 ft

25 ft

50 ft

10 ft

25 ft

50 ft

10 ft

25 ft

50 ft **

Line

Adjust

3 oz

6 oz

13 oz

3 oz

6 oz

13 oz

6 oz

14 oz

28 oz **

Factory

Charge

42

46

63

24000

WLH24

CAH24

UNH24

0.56 oz

10 ft

25 ft

50 ft

6 oz

14 oz

28 oz

80

86 oz

94 oz

108 oz

** Any 18,000 Btuh circuit with more than 87 feet of tubing (> 112 oz of total refrigerant charge) requires a 25W wrap around Crankcase Heater.

Total

Charge

45 oz

48 oz

55 oz

49 oz

52 oz

59 oz

86 oz

94 oz

108 oz imPorTanT noTeS:

1. To find the charge adjustment and system charge for any evaporator and tubing length:

Line Adjustment = (Line Chg/Ft) x Line Length

System Total = Factory Charge + Line Adjustment

2. Round to the nearest ounce and allow for gauges and hoses.

3. U se R22 refrigerant.

Field CHarging

The use of the superheat method is highly recommended for field charging or checking the existing refrigerant charge in a system.

Because each installation is different in terms of indoor air flow, refrigerant line length, etc.., the factory charge may not be correct for every application. To assure the best performance from the air-conditioner, the refrigerant charge should be checked and adjusted, if need be, on each installation.

For proper superheat readings, a standard low-side refrigerant gauge and an accurate thermometer are needed. A mercury or stem-type thermometer is not adequate for suction-line temperatures. We recommend electric thermocouple thermometers

(available at most refrigeration wholesalers); however an accurate remote-bulb thermometer can be used. When measuring the line temperature, be sure the thermometer is well insulated to assure accurate measurements. The chart below gives superheat values at various outdoor temperatures. Allow at least 5 minutes running time between charge adjustments for the unit to stabilize.

The S & T series (S2HB, T2HB, T3HB &

T4HB) have manifold access points on each of the service valves for the high and low pressures in cooling mode. There is an additional “common suction” access point above each service valve set to provide low pressure access in the heating mode as both service valves are at high side pressure.


MultI-zonE HEAt PuMP fIEld cHArgIng multi-zone Heat Pump Condensing units 14 www.enviromaster.com




MultI-zonE HEAt PuMP rEfrIgErAnt PIPIng InStAllAtIon

Field CHarging

NOTE:

If operating superheat is more than 5°F above the chart value, add refrigerant. If below the chart value remove refrigerant. If below the limit line, remove refrigerant.

Example

(Using the 12,000 Btuh cooling chart):

1. S uction pressure is 65 psi. which equals

38°

F on The R-22 Scale of the Low-

Side gauge.

2. Suction line temperature taken at the unit is 70° F. 70° F minus 38° F equals

32°

F superheat.

3. Outdoor temperature is 90° F, indoor temperature is 80° F.

4. Intersection of the indoor-temperature and outdoor-temperature lines occur on the 12°

F superheat line.

5. Add charge to obtain 12° F superheat.

Instructions:

1. Measure suction pressure and determine evaporator-refrigerant temperature on

R-22 scale of low-side gauge.

2. Measure suction-line temperature on suction line of the unit.

3. Measure outdoor and indoor temperatures.

4. Determine from the table what the superheat should be for the indoor and outdoor temperatures. (Example indicates 12° F superheat.)

5. Adjust charge if needed. Be sure unit is running at stabilized condition.

NOTE:

For installation of the indoor unit and start-up of the system, please refer to the appropriate installation manual for your indoor product to complete the installation.

STarTing THe uniT

• Before starting the unit in cool weather, power the system 24 hours before attempting to start.

• Remove gauge set. Mount all access panels and make sure they are properly secured.

• Do a final system check using the superheat/subcooling method. Record results on Test Unit Performance Data sheet

(next page).

• Make final visual inspection and repair any deficiencies.

(Proceed to the Sequence Of Operation on the following pages)

- Cooling mode superheat is set with a proper sized piston and charge, using the field charging charts.

- Heating mode superheat is set with a TXV and should be 5 -10°F. When charging a system in heat mode, use the subcool method field charging charts.


StArt-uP And trouBlESHootIng tESt ProcEdurE

The Test Unit Performance Data sheet below is provided for use by a qualified service professional. In order for our Technical Service Department to better serve you, please complete and have this information ready when calling. Make sure to include the Model Number, Serial Number, Date of Installation.

Call our Technical Support Department

@ 1-800-228-9364.

Model Number

Serial Number

Test unit Performance data

Date:

Technician:

Mode: Cooling indoor Section

Evaporator Entering Air - DB

Evaporator Entering Air - WB

Evaporator Leaving Air - DB

Evaporator Leaving Air - WB outdoor Section

Entering Air

Leaving Air

Temperature Split operating Pressures

Compressor Suction - PSIG

Compressor Discharge - PSIG

Compressor - Volts

Compressor - Amps

OD Fan Motor - Volts

OD Fan Motor - Amps

ID Fan Motor - Volts

ID Fan Motor - Amps

Total Volts

Total Amps

Power input

Temperatures - degrees F°

Compressor Suction

Compressor Discharge

Liquid Out Cond.

Liquid before Expansion

Suction out Evaporator

Capacity Calculations

DB - Temp Split at evap.

notes

Note:

Rotary compressors are critically charged systems, do not over charge. Refer to the Charge Table specific to the unit being installed or call the factory.

Anti-short cycle protection should be used on systems that use a conventional thermostat.

Test Summary

Compressor Superheat

Sub Cooling

Save this information for future servicing. In the event there is a problem with the unit. Perform the test again (if possible) and have both sets of data ready when calling for assistance. multi-zone Heat Pump Condensing units 19 www.enviromaster.com

MultI-zonE condEnSEr SEquEncE of oPErAtIon

EMI America Series multi-zone heat pump condensers are designed to operate with EMI America Series indoor air handlers. Both the condenser

(outdoor unit) and evaporator (indoor unit) have a high

Volt service connection. Each is to be independently connected to the electrical service panel. (See the unit name plate for the

correct breaker type and size). The outdoor and indoor units are also connected to each other through a low Volt interconnect wiring.

A 24V transformer located in the indoor unit provides the low Volt power source.

The S & T series (S2HB, T2HB, T3HB &

T4HB) heat pumps will provide comfort cooling or heat pump operation operate at an outdoor temperature range between

35°F and 115°F for cooling, 0°F and 75°F for (heat pump) heating.

The S & T series (S2HB, T2HB, T3HB

& T4HB) heat pump condensers are designed to operate as a single stage cooling, two stage heating unit. For full operation the unit should be matched with an appropriate EMI indoor unit with electric heat and unit mounted controls or a wall by providing comfort cooling or heating to the indoor space. The reversing valve is energized in cooling. Should the valve fail to actuate, the system will default to the heating mode of operation.

Cooling operation, Multi-zone Heat

Pump:

Cooling mode operation requires that the control (either unit mount or remote wall mount thermostat) make a connection between low-Volt terminals “R” and “Y” along with “R” and “O”. When the indoor control is placed in cooling mode, with the set point temperature below the room temperature, the reversing valve will energize (R & O) along with the compressor and outdoor fan

(R & Y). when the indoor control is satisfied and the room temperature falls below the set temperature, the compressor and fan will de-energize. The EMI indoor unit is equipped with an anti-short cycle timer

(ASCT) will prevent the compressor from re-starting for three minutes.

mounted thermostat.

For two stage heating operation the indoor unit must be equipped with an electric strip heater.

See the instruction manual for the indoor unit on the selection of the proper thermostat for the system.

Condenser Operation:

The transformer located in the indoor unit provides 24V, low-Volt control power to the condenser

(outdoor unit). This can be measured across low-Volt terminals “R” and “C”.

Heating operation, Multi-zone Heat

Pump:

Heating mode operation requires that the control (either unit mount or remote wall mount thermostat) make a connection between low-Volt terminals “R” and “Y” only. When the indoor control is placed in heating mode, with the set point temperature above room temperature, the compressor and outdoor fan (R & Y) will energize. When the indoor control is satisfied and the room temperature rises above the set temperature, the compressor and fan will de-energize. The EMI indoor unit is equipped with an anti-short cycle timer

(ASCT) will prevent the compressor from re-starting for three minutes.

Heat pump condensers utilize a reversing valve to provide reverse cycle operation.

Therefore the outdoor unit will act as either a condenser or an evaporator there-

Note:

For full operation the indoor unit

must have an electric heater. multi-zone Heat Pump Condensing units 20 www.enviromaster.com

Single-Zone and dual-Zone SequenCe oF oPeraTion

TeSTing deFroST oPeraTion uSing TeST PinS deFroST ConTrol the two second defrost cycle is complete, the unit will switch back to heating operation for another 20 seconds. This process will repeat until the jumpers are removed from the test pins.

DFT TST R and DF2

Note:

If the condenser coil is heavily frosted up with ice, it is likely that the

“Defrost Sensor” is already closed. In this case the “R and DFT” jumper can be eliminated. To initiate defrost, momentarily jump pins marked “DFT TST” until the defrost cycle begins. The unit will remain in defrost mode until the condenser coil is defrosted and then it will return to heating mode. When testing is complete be sure to remove the jumper(s). DO NOT leave the unit in test mode with jumper(s) in place.

Warning!

Before removing the access panels to the unit make sure that all power is disconnected from the unit. Failure to do so could result in injury or electric shock.

Defrost operation can be initiated using the test pins located on the circuit board of the condensing unit. “Defrost test operation” will be a time compressed version of the actual defrost cycle.

With the system “off”, using two small alligator clips, jumper the following sets of test pins. “R and DF2” and “DFT TST”.

Defrost control board:

Apply power to the indoor and outdoor units. Place the indoor unit in heating mode with the set point temperature well above room temperature. This is to ensure that the condenser will remain on during the entire defrost test operation.

The condenser will operate in heating for approximately 20 seconds. At that point the unit will enter defrost mode for approximately 2 seconds. During this time the condenser fan will switch off, the reversing valve will energize and the defrost board will energize the indoor electric heat relay through the “W” terminal. After multi-zone Heat Pump Condensing units

Defrost controls with short cycle

protection

(heat pumps only): The unit is equipped with a logic control circuit designed to keep system operating at peek efficiency. The 24V circuit provides control to the indoor and outdoor systems including a three minute, anti-short cycle timer

(ASCT) compressor protection.

The defrost control circuit is designed to keep the condenser coil free from frost and ice during heating mode. This is accomplished through the precise switching sequence of the outdoor fan, reversing valve and indoor auxiliary heater.

Defrost initiation:

The defrost-sensor is located on either the end plate or the return bend of the condenser coil. A defrost cycle will initiate after the sensor closes

(approx. 30° F) and remains closed for the length of time selected on the control board (either 30, 60 or 90 minutes)*.

At the start of the defrost cycle, the reversing valve will change from heating to cooling mode. The condenser fan will also switch off, there-by allowing pressure and temperature to rise within the condenser

21 www.enviromaster.com

MultI-zonE condEnSEr SEquEncE of oPErAtIon coil, melting off any ice build-up. At the same time the unit will switch on the in door electric strip heater to temper the cold air being discharged from the evapo-

rator unit. This will continue until either the defrost-sensor opens (approx. 60° F) or a 10-minute maximum cycle time has elapsed. Defrost times will vary depending on outdoor temperature and moisture conditions. When the defrost cycle is complete the unit will return to normal heating operation.

*Factory settings 9-24k Btu = 90 minutes W

LOw VOLT INTERCONNECT DIAgRAMS

Refer to the indoor unit for the proper low Volt interconnect wiring.

oPeraTion and mainTenanCe

The EMI America Series outdoor section is the compressor bearing unit of the system.

It operates at the command of the indoor section or room thermostat. Therefore, the operation will be described in the manual pertaining to the indoor section.

EMI units are designed and constructed for reliability and long life with minimal maintenance. You can assure peak operating efficiency by regularly inspecting for free air passage into and through the coil. If debris collect on the air coil, it should be cleaned by

"back-flushing" with a spray of water or vacuuming. Turn oFF PoWer SuPPlY FirST.

Outdoor units may be cleaned or waxed if desired. Use a non-abrasive car wax.

Panels should remain on the unit at all times.

Service should be performed by a QUAli-

FiED service agency only.

SPeCiFiC CHangeS

All EMI products are subject to ongoing development programs so design and specifications may change without notice. Please consult the factory for more information.

general reCommendaTionS

Do not charge the straight cool units on cold days unless weighing in the charge.

The heat pump

systems may be charged in heat cycle between 35 and 75°F. These units use a heat cycle TXV and cannot be charged to superheat; use weight or subcooling method only.

Charging should be done with a dial-acharge or weighed in with a scale.

NOTE:

For more information, please visit our web-site at www.enviromaster.com or call 1-800-228-9364.


44”

S2HB dIMEnSIonS And SPEcIfIcAtIonS noTe:

All EMI products are subject to ongoing development programs so design and specifications may change without notice.

15”

38”

Easy access interconnects on back of unit

Front of unit

Electrical connections

1/2” Diameter Lag Holes

7” 23.94” 7”

3.00”

12.44”

S2HB eleCTriCal SPeCiFiCaTionS model

(1)

VolTS/HZ/PHaSe rla

Fan

HP

ComPreSSor 1 rla lra

ComPreSSor 2 rla lra

ToTal amPS min. Cir. amPS

(2)

9.5

HaCr

BrKr

9900

2200

9200

208-230/60/1

208-230/60/1

208-230/60/1

1.8

1.8

1.8

0.33

0.33

0.33

3.4

4.3

3.4

23

27

23

3.4

4.3

4.3

23

27

27

8.6

10.4

9.5

11.5

10.6

15

15

15

(1) Circuit Designators: 9 = 9,000 Btuh • 2 = 12,000 Btuh (ex. - Model 9200 consists of one 9,000 Btuh compressor and one 12,000 Btuh compressor)

(2) Always refer to the rating plate for Minimum Circuit Ampacity on all multiple compressor units.

S2HB PiPing SPeCiFiCaTionS line Sizes model#

9900

2200

9200 liquid

1/4”

1/4”

1/4”

Suction

1/2”

1/2”

1/2”

Sound daTa dBa

64

65

65

SHiPPing

WeigHT lbs.

159

197

187 multi-zone Heat Pump Condensing units 23 www.enviromaster.com

S2HB SyStEM PErforMAncE wLH

S2HB

S2HB

(Outdoor)

9900 model

2200

9200 indoor units

WLH09 +

WLH09

WLH12 +

WLH12

WLH09 +

WLH12

S2HB / WlH SYSTem PerFormanCe

Cooling

Btuh

18,600

22,600

20,600

Seer

13.0

13.0

13.0

SHr

.80

.72

.76

eer

11.9

11.7

11.7

Btuh

14,800

18,400

16,600

HeaTing

HSPF

7.7

7.7

7.7

C.o.P.

3.3

3.3

3.3

CAH

CAH

S2HB

S2HB

(Outdoor)

9900 model indoor units

2200

9200

CAH12 +

CAH12

CAH12 +

CAH12

CAH12 +

CAH12

S2HB / CaH SYSTem PerFormanCe

Cooling

Btuh

18,600

22,600

20,600

Seer

13.0

13.0

13.0

SHr

79

.75

.77

eer

11.4

11.3

11.3

Btuh

14,600

18,400

16,500

HeaTing

HSPF

7.7

7.7

7.7

C.o.P.

3.1

3.2

3.1


S2HB SyStEM PErforMAncE

UNH

S2HB

Side Discharge model

S2HB

(Outdoor)

9900

2200

9200 indoor units

UNH09 +

UNH09

UNH12 +

UNH12

UNH09 +

UNH12

S2HB / unH Side diSCHarge

Cooling

Btuh Seer SHr eer Btuh

HeaTing

HSPF C.o.P.

18,600

22,600

20,600

13.0

13.0

13.0

.75

.73

.74

11.9

11.7

11.7

14,800

18,400

16,600

7.7

7.7

7.7

3.3

3.3

3.3


t2HB, t3HB, And t4HB dIMEnSIonS And SPEcIfIcAtIonS noTe:


T2HB8800

T2HB8400

T2HB4400

T2HB2400

T2HB9800

T3HB9990

T3HB9920

T3HB9980

T3HB9940

T3HB9220

T3HB9280

T3HB9240

T3HB2280

T3HB2240

T3HB2220

T4HB9999

T4HB9992

T4HB9922

T4HB9222

T4HB2222 lInE SEt, Sound & WEIgHt dAtA line Set diameters model

Sound Weight liquid

3/8”

3/8”

3/8”

1/4” & 3/8”

1/4” & 3/8”

1/4”

1/4”

1/4” & 3/8”

1/4” & 3/8”

1/4”

1/4” & 3/8”

1/4” & 3/8”

1/4” & 3/8”

1/4” & 3/8”

1/4”

1/4”

1/4”

1/4”

1/4”

1/4”

Suction

5/8”

5/8” & 3/4”

3/4”

1/2” & 3/4”

1/2” & 5/8”

1/2”

1/2”

1/2” & 5/8”

1/2” & 3/4”

1/2”

1/2” & 5/8”

1/2” & 3/4”

1/2” & 5/8”

1/2” & 3/4”

1/2”

1/2”

1/2”

1/2”

1/2”

1/2” dBa

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70 lbs.

325

325

325

325

325

325

325

325

325

325

325

325

325

325

325

325

325

325

325


t2HB, t3HB, And t4HB SPEcIfIcAtIonS noTe:


inTerConneCTing TuBing SPeCS

T2HB, T3HB, & T4HB models:

Nominal

Circuit

Capacity

9,000

12,000

18,000

24,000

Maximum

Length

100’

100’

100’

100’

Maximum

Lift

35’

35’

35’

35’

Liquid

Line

OD

1/4”

1/4”

3/8”

3/8”

Suction

Line

OD

1/2”

1/2”

5/8”*

3/4”

* CAH24, UNH24, WLH24 Suction Connection size is 3/4” O.D. and must bush down to 5/8” for 18,000

Btuh circuits at the indoor unit.

9990

9920

9980

9940

9220

9280

9240

2280

ELECTRICAL SPECIFICATIONS • t2HB, t3HB, And t4HB - 208/230V - 60 HErtz 1 - PHASE

FAN MTR COMPRESSOR

CAPACITY

AMPS HP

CIRCUIT #1 CIRCUIT #2 CIRCUIT #3 CIRCUIT #4

TOTAL

AMPS MCA

HACR

BRKR

MIN

VOLT

RLA LRA RLA LRA RLA LRA RLA LRA

T2HB

8800

8400

4400

2400

9800

1.8

1.8

1.8

1.8

1.8

0.33

0.33

0.33

0.33

0.33

5.4

5.4

8.8

4.3

3.4

36

36

54

27

23

5.4

8.8

8.8

8.8

5.4

36

54

54

54

36

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

12.6

16.0

14.0

18.2

19.4

21.6

14.9

17.1

10.6

12.0

15

25

30

25

15

197

197

197

197

197

T3HB

2240

2220

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

0.33

0.33

0.33

0.33

0.33

0.33

0.33

0.33

0.33

0.33

3.4

3.4

3.4

3.4

3.4

3.4

3.4

4.3

4.3

4.3

23

23

23

23

23

23

23

27

27

27

3.4

3.4

3.4

3.4

4.3

4.3

4.3

4.3

4.3

4.3

23

23

23

23

27

27

27

27

27

27

3.4

4.3

5.4

8.8

4.3

5.4

8.8

5.4

8.8

4.3

23

27

36

54

27

36

54

36

54

27

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

12.0

12.9

14

13.0

14

15.4

17.4

19.6

13.8

14.9

14.9

16.3

18.3

20.5

15.8

19.2

14.7

17.2

21.4

15.8

15

15

20

25

15

20

25

20

30

20

197

197

197

197

197

197

197

197

197

197

T4HB

9999

9992

9922

9222

2222

1.8

1.8

1.8

1.8

1.8

0.33

0.33

0.33

0.33

0.33

3.4

3.4

3.4

3.4

4.3

23

23

23

23

27

3.4

3.4

3.4

4.3

4.3

23

23

23

27

27

3.4

3.4

4.3

4.3

4.3

23

23

27

27

27

3.4

4.3

4.3

4.3

4.3

23

27

27

27

27

15.4

16.3

16.3

17.4

17.2

18.3

18.1

19.2

19

20.1

20

20

20

20

25

Circuit Designators: 9 = 9000 Btuh 2 = 12000 Btuh 8 = 18000 Btuh 4 = 24000 Btuh (ex. - 8400 consists of one 18000 Btuh compressor and one 24000 Btuh compressor)

197

197

197

197


t2HB, t3HB, And t4HB SPEcIfIcAtIonS wLH

T2HB, T3HB, or T4HB

Top Discharge

WlH / t2HB, t3HB, or t4HB SyStEM PErforMAncE dAtA model Cooling Heating outdoor

T2HB8800

T2HB8400

T2HB4400

T2HB2400 indoor air Handler

(2) WLH24

(2) WLH24

(2) WLH24

(1) WLH12 + (1) WLH24

Btuh

36000

42000

48000

35000

Seer

13

13

13

13

SHr

0.72

0.68

0.65

0.67

eer

12.1

11.9

11.8

11.7

Btuh

26800

32000

37400

27800

HSPF

7.7

7.7

7.7

7.7

CoP

3.3

3.2

3.2

3.2

T2HB9800

T3HB9990

T3HB9920

T3HB9980

T3HB9940

T3HB9220

T3HB9280

(1) WLH09 & (1) WLH24

(3) WLH09

(2) WLH09 + (1) WLH12

(2) WLH09 + (1) WLH24

(2) WLH09 + (1) WLH24

(1) WLH09 + (2) WLH12

(1) WLH09 + (1) WLH12 +

(1) WLH24

27200

27800

29800

36400

42500

31800

38500

13

13

13

13

13

13

13

0.74

0.80

0.76

0.76

0.71

0.74

0.73

12.0

11.9

11.8

12.0

11.8

11.7

11.9

20800

22200

24000

28200

33400

25800

30000

7.7

7.7

7.7

7.7

7.7

7.7

7.7

3.3

3.3

3.3

3.3

3.2

3.3

3.3

T3HB9240 (1) WLH09 + (1) WLH12 +

(1) WLH24

44500 13

0.69

11.7

35200

7.7

3.2

T3HB2280

T3HB2240

T3HB2220

(2) WLH12 + (1) WLH24

(2) WLH12 + (1) WLH24

(3) WLH12

40500

46500

34000

13

13

13

0.76

0.68

0.72

11.8

11.7

11.7

31800

37000

27600

7.7

7.7

7.7

T4HB9999

T4HB9992

T4HB9922

T4HB9222

T4HB2222

(4) WLH09

(3) WLH09 + (1) WLH12

(2) WLH09 + (2) WLH12

(1) WLH09 + (3) WLH12

(4) WLH12

37200

39000

41000

43000

45000

13

13

13

13

13

0.8

0.77

0.76

0.72

0.72

11.9

11.8

11.8

11.6

11.7

29600

31400

33200

35000

36800

7.7

7.7

7.7

7.7

7.7


3.3

3.2

3.3

3.3

3.3

3.3

3.3

3.3


t2HB, t3HB, And t4HB SPEcIfIcAtIonS

CAH


Top Discharge cAH / t2HB, t3HB, or t4HB SyStEM PErforMAncE dAtA model Cooling Heating outdoor indoor air Handler Btuh Seer SHr eer Btuh HSPF CoP

T2HB8800

T2HB8400

T2HB4400

T2HB2400

T2HB9800

T3HB9990

T3HB9920

T3HB9980

(2) CAH24

(2) CAH24

(2) CAH24

(1) CAH12 + (1) CAH24

(1) CAH12 & (1) CAH24

(3) CAH12

(3) CAH12

(2) CAH12 + (1) CAH24

36000

42000

48000

35000

27200

27800

29800

36400

13

13

13

13

13

13

13

13

0.76

0.80

0.78

0.77

0.75

0.71

0.67

0.69

11.9

11.6

11.4

11.9

12.3

12.1

11.7

11.5

24400

30600

36800

27600

19400

21800

23800

26800

7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.7

T3HB9940

T3HB9220

T3HB9280

T3HB9240

T3HB2280

T3HB2240

T3HB2220

T4HB9999

(2) CAH12 + (1) CAH24

(3) CAH12

(2) CAH12 + (1) CAH24

(2) CAH12 + (1) CAH24

(2) CAH12 + (1) CAH24

(2) CAH12 + (1) CAH24

(3) CAH12

(4) CAH12

42500

31800

38500

44500

40500

46500

34000

37200

13

13

13

13

13

13

13

13

0.75

0.71

0.75

0.8

0.72

0.76

0.75

0.71

11.7

11.5

11.3

11.6

11.6

11.3

11.8

11.8

33000

25600

28600

34800

30400

36800

27600

29200

7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.7

T4HB9992

T4HB9922

T4HB9222

T4HB2222

(4) CAH12

(4) CAH12

(4) CAH12

(4) CAH12

39000

41000

43000

45000

13

13

13

13

0.78

0.77

0.75

0.75

11.5

11.4

11.2

11.3

31000

33000

34800

36800

7.7

7.7

7.7

7.7

3.1

3.1

3.1

3.1


3.1

3.1

3.1

3.2

3.1

3.1

3.1

3.1

3.1

3.2

3.1

3.1

3.1

3.1

3.1

3.1


t2HB, t3HB, And t4HB SPEcIfIcAtIonS


Top Discharge

UNH unH / t2HB, t3HB, or t4HB SyStEM PErforMAncE dAtA

Model Cooling Heating

Outdoor

T2HB8800

T2HB8400

T2HB4400

T2HB2400

T2HB9800

T3HB9990

T3HB9920

T3HB9980

T3HB9940

T3HB9220

T3HB9280

T3HB9240

Indoor Air Handler

(2) UNH24

(2) UNH24

(2) UNH24

(1) UNH12 + (1) UNH24

(1) UNH09 + (1) UNH24

(3) UNH09

(2) UNH09 + (1) UNH12

(2) UNH09 + (1) UNH24

(2) UNH09 + (1) UNH24

(1) UNH09 + (2) UNH12

(1) UNH09 + (1) UNH12 +

(1) UNH24

(1) UNH09 + (1) UNH12 +

(1) UNH24

Btuh

36000

42000

48000

35000

27200

27800

29800

36400

42500

31800

38500

44500

SEER SHR EER

13 0.72

12.1

13

13

13

13

13

13

13

13

13

13

13

0.68

0.65

0.67

0.74

0.80

0.76

0.76

0.71

0.74

0.73

0.69

11.9

11.8

11.7

12.0

11.9

11.8

12.0

11.8

11.7

11.9

11.7

Btuh

26800

32000

37400

27800

20800

22200

24000

27200

33400

25800

30000

35200

HSPF

7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.7

7.7

3.3

3.2

T3HB2280

T3HB2240

T3HB2220

T4HB9999

T4HB9992

(2) UNH12 + (1) UNH24

(2) UNH12 + (1) UNH24

(3) UNH12

(4) UNH09

(3) UNH09 + (1) UNH12

40500

46500

34000

37200

39000

13

13

13

13

13

0.76

0.68

0.72

0.8

0.77

11.8

11.7

11.7

11.9

11.8

31800

37000

27600

29600

31400

7.7

7.7

7.7

7.7

7.7

T4HB9922

T4HB9222

(2) UNH09 + (2) UNH12

(1) UNH09 + (3) UNH12

41000

43000

13

13

0.76

0.72

11.8

11.6

33200

35000

7.7

7.7

3.3

3.3

T4HB2222 (4) UNH12 45000 13 0.72

11.7

36800 7.7

3.3

Circuit Designators: 9 = 9000 Btuh 2 = 12000 Btuh 8 = 18000 Btuh 4 = 24000 Btuh (ex. - 8400 consists of one 18000 Btuh compressor and one 24000 Btuh compressor)

3.3

3.2

3.3

3.3

3.3

COP

3.3

3.2

3.2

3.2

3.3

3.3

3.3

3.3

3.2

3.3


emi’S HigH Seer ProduCT line eVaPoraTorS wLC/wLH

High wall Evaporator

CAC/CAH

Cassette Evaporator

UNC/UNH

Universal Evaporator

S2C & S2H

Dual Zone

Side Discharge

S1C & S1H

Single Zone

Side Discharge

CondenSerS

T2C, T3C & T4C

T2H, T3H & T4H

2, 3, & 4 Zone

Top Discharge multi-zone Heat Pump Condensing units 31 www.enviromaster.com

Phone: 1-800-228-9364

Fax: 1-800-232-9364

5780 Success Drive,

Rome, NY 13440

EMI S2HB Installation, Operation and Maintenance Manual

EMI AMErIcA SErIES

MultI-ZonE HEAt PuMP condEnSIng unItS

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PiSTon/oriFiCe CHange KiT inSTallaTion

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