Heat Controller HTH, HTD, HTV User Manual

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INSTALLATION, OPERATION

& MAINTENANCE MANUAL

HTV/HTD/HTH Series

Two-Stage

Geothermal Heat Pumps

2 to 6 Tons

Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Model Breakdown Model Nomenclature – Two Stage Geothermal Heat Pump

1 2

Series

HT = Heat Controller Two Stage

Configuration

V = Vertical Up Flow H = Horizontal D = Vertical Down Flow

Unit Size

024 036 048 060

070

Revision Level

B = Efficiency Upgrade C = Microchannel Air Coil on 036

4 5 6 7

Voltage

1 = 208-230/30/1

Controls

C = CXM

C0 2 4 C1 0 1 A L K

TABLE OF CONTENTS

Model Nomenclature ..........................................2

91011121314

Supply Air Flow & Motor Configuration

Heat Exchanger Options

A = Copper Water Coil, Coated Air Coil J = Copro-Nickel Water Coil, Coated Air Coil

Water Circuit Options

1 = HWG w/Internal Pump 0 = None

Cabinet

0 = Residential

Supply Configuration Motor

Top

Down

Back

Straight

Return Air Flow Configuration

L = Left Return R = Right Return

HTV HTD HTH HTH

ECM ECM ECM ECM

Blower Data ......................................................26

Storage ...............................................................4

Pre-Installation....................................................4

Horizontal Installation .........................................5

Field Conversion of Air Discharge ......................7

Duct System Installation .....................................8

Condensate Piping Installation ...........................8

Vertical Installation........................................9-10

Water Connection Installation ...........................11

Ground Loop Applications ...........................11-12

Open Loop - Ground Water Systems ...............13

Water Quality Standards ..................................15

Hot Water Generator .................................. 16-18

Electrical - Line Voltage .............................. 19-20

Electrical - Low Voltage Wiring ................... 21-22

Accessory Connections ....................................22

Electrical - Thermostat Wiring ..........................23

ECM Blower Control ................................... 24-25

CXM Controls ...................................................27

Safety Features – CXM Control.................. 28-30

Unit Commissioning

And Operating Conditions ................................31

Unit Start-Up and Operating Conditions ...........32

Unit Start-Up Procedure ...................................32

Coax Pressure Drop Tables ..............................34

Unit Operating Conditions .......................... 35-36

Performance Data ...................................... 37-41

Preventive Maintenance ...................................42

Troubleshooting ................................................43

CXM Process Flow Chart .................................44

Functional & Performance

Troubleshooting ..........................................45-46

Troubleshooting Form ......................................47

Refrigerant Circuit Diagram ..............................47

Revision History................................................48

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Safety

Warnings, cautions and notices appear throughout this manual. Read these items carefully before attempting any installation, service, or troubleshooting of the equipment.

DANGER: Indicates an immediate hazardous situation, which if not avoided will result in death or serious injury. DANGER labels on unit access panels must be observed.

WARNING: Indicates a poten tially hazardous situa tion , which if not avoided could result in death or serious injury.

 WARNING! 

WARNING! To avoid the release of refrigerant into the atmosphere, the refrigerant circuit of this unit must be serviced only by technicians who meet local, state, and federal proﬁ ciency requirements.

CAUTION: Indicates a potentially hazardous situation or an

unsafe practice, which if not avoided could result in minor or

moderate injury or product or property damage.

NOTICE: Notiﬁ cation of installation, operation or maintenance

information, which is important, but which is not hazard-related.

 WARNING! 

WARNING! All refrigerant discharged from this unit must be recovered WITHOUT EXCEPTION. Technicians must follow industry accepted guidelines and all local, state, and federal statutes for the recovery and disposal of refrigerants. If a compressor is removed from this unit, refrigerant circuit oil will remain in the compressor. To avoid leakage of compressor oil, refrigerant lines of the compressor must be sealed after it is removed.

 CAUTION! 

CAUTION! To avoid equipment damage, DO NOT use these units as a source of heating or cooling during the construction process. The mechanical components and ﬁ lters will quickly become clogged with construction dirt and debris, which may cause system damage.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

General Information

Inspection

Upon receipt of the equipment, carefully check the shipment against the bill of lading. Make sure all units have been received. Inspect the packaging of each unit, and inspect each unit for damage. Insure that the carrier makes proper notation of any shortages or damage on all copies of the freight bill and completes a common carrier inspection report. Concealed damage not discovered during unloading must be reported to the carrier within 15 days of receipt of shipment. If not ﬁled within 15 days, the freight company can deny the claim without recourse. Note: It is the responsibility of the purchaser to ﬁle all necessary claims with the carrier. Notify your equipment supplier of all damage within ﬁ fteen (15) days of shipment.

Storage

Equipment should be stored in its original packaging in a clean, dry area. Store units in an upright position at all times. Stack units a maximum of 3 units high.

Unit Protection

Cover units on the job site with either the original packaging or an equivalent protective covering. Cap the open ends of pipes stored on the job site. In areas where painting, plastering, and/ or spraying has not been completed, all due precautions must be taken to avoid physical damage to the units and contamination by foreign material. Physical damage and contamination may prevent proper start-up and may result in costly equipment cleanup.

7. Locate and verify any hot water generator (HWG), hanger, or other accessory kit located in the compressor section or blower section.

 CAUTION! 

CAUTION! DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes (e.g., attics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can signiﬁ cantly reduce performance, reliability, and service life. Always move and store units in an upright position. Tilting units on their sides may cause equipment damage.

 CAUTION! 

CAUTION! CUT HAZARD - Failure to follow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing heat pumps.

Examine all pipes, ﬁttings, and valves before installing any of the system components. Remove any dirt or debris found in or on these components.

Pre-Installation

Installation, Operation, and Maintenance instructions are provided with each unit. Horizontal equipment is designed for installation above false ceiling or in a ceiling plenum. Other unit conﬁ gurations are typically installed in a mechanical room. The installation site chosen should include adequate service clearance around the unit. Before unit start-up, read all manuals and become familiar with the unit and its operation. Thoroughly check the system before operation.

Prepare units for installation as follows:

1. Compare the electrical data on the unit nameplate with ordering and shipping information to verify that the correct unit has been shipped.

2. Keep the cabinet covered with the original packaging until installation is complete and all plastering, painting, etc. is ﬁ nished.

3. Verify refrigerant tubing is free of kinks or dents and that it does not touch other unit components.

4. Inspect all electrical connections. Connections must be clean and tight at the terminals.

5. Remove any blower support packaging (water-to-air units only).

6. Loosen compressor bolts on units equipped with compressor grommet vibration isolation until the compressor rides freely on the grommets.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

General Information

Horizontal Unit Location

Units are not designed for outdoor installation. Locate the unit in an INDOOR area that allows enough space for service personnel to perform typical maintenance or repairs without removing unit from the ceiling. Horizontal units are typically installed above a false ceiling or in a ceiling plenum. Never install units in areas subject to freezing or where humidity levels could cause cabinet condensation (such as unconditioned spaces subject to 100% outside air). Consideration should be given to access for easy removal of the ﬁ lter and access panels. Provide sufﬁ cient room to make water, electrical, and duct connection(s).

If the unit is located in a conﬁ ned space, such as a closet, provisions must be made for return air to freely enter the space by means of a louvered door, etc. Any access panel screws that would be difﬁ cult to remove after the unit is installed should be removed prior to setting the unit. Refer to Figure 3 for an illustration of a typical installation. Refer to unit speciﬁ cations catalog for dimensional data.

Conform to the following guidelines when selecting unit location:

Provide a hinged access door in concealed-spline or plaster ceilings. Provide removable ceiling tiles in T-bar or lay-in ceilings. Refer to horizontal unit dimensions for speciﬁ c series and model in unit speciﬁ cations catalog. Size the access opening to accommodate the service technician during the removal or replacement of the compressor and the removal or installation of the unit itself.

Provide access to hanger brackets, water valves and ﬁ ttings. Provide screwdriver clearance to access panels, discharge collars and all electrical connections.

3. DO NOT obstruct the space beneath the unit with piping,

electrical cables and other items that prohibit future removal of components or the unit itself.

4. Use a manual portable jack/lift to lift and support the weight

of the unit during installation and servicing.

Mounting Horizontal Units

Horizontal units have hanger kits pre-installed from the factory as shown in Figure 1. Figure 3 shows a typical horizontal unit installation.

Horizontal heat pumps are typically suspended above a ceiling or within a sofﬁ t using ﬁ eld supplied, threaded rods sized to support the weight of the unit.

Use four (4) ﬁ eld supplied threaded rods and factory provided vibration isolators to suspend the unit. Hang the unit clear of the ﬂ oor slab above and support the unit by the mounting bracket assemblies only. DO NOT attach the unit ﬂ ush with the ﬂ oor slab above.

Pitch the unit toward the drain as shown in Figure 2 to improve the condensate drainage. On small units (less than 8.8kW) ensure that unit pitch does not cause condensate leaks inside the cabinet.

Figure 1: Hanger Bracket

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The installation of water source heat pump units and all associated components, parts and accessories which make up the installation shall be in accordance with the regulations of ALL authorities having jurisdiction and MUST conform to all applicable codes. It is the responsibility of the installing contractor to determine and comply with ALL applicable codes and regulations.

Figure 2: Horizontal Unit Pitch

1/4” (6.4mm) pitch per foot for drainage

Drain

Connection

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Horizontal Installation

Figure 3: Typical Horizontal Unit Installation

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Air Coil -

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To obtain maximum performance, the air coil should be cleaned before start-up. A 10% solution of dishwasher detergent and water is recommended for both sides of the coil. A thorough water rinse should follow.

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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Field Conversion of Air Discharge

Overview -

Horizontal units can be ﬁ eld converted between side

(straight) and back (end) discharge using the instructions below. Note: It is not possible to ﬁ eld convert return air between left or

right return models due to the necessity of refrigeration copper piping changes.

Preparation - It is best to ﬁ eld convert the unit on the ground before hanging. If the unit is already hung it should be taken down for the ﬁ eld conversion.

Side to Back Discharge Conversion

Place unit in well lit area. Remove the screws as shown in Figure 4 to free top panel and discharge panel.

2. Lift out the access panel and set aside. Lift and rotate the

discharge panel to the other position as shown, being careful with the blower wiring.

Check blower wire routing and connections for tension or contact with sheet metal edges. Reroute if necessary .

4. Check refrigerant tubing for contact with

other components.

5. Reinstall top panel and screws noting that the location for

some screws will have changed.

6. Manually spin the fan wheel to ensure that the wheel is not

rubbing or obstructed.

7. Replace access panels.

Figure 4: Left Return Side to Back

Water

Connection End

Water

Connection End

Water

Connection End

Side Discharge

Remove Screws

Move to Side

Replace Screws

Return Air

Rotate

Return Air

Back to Side Discharge Conversion - If the discharge is changed from back to side, use above instruction noting that illustrations will be reversed.

Left vs. Right Return - It is not possible to ﬁ eld convert return air between left or right return models due to the necessity of refrigeration copper piping changes. However, the conversion process of side to back or back to side discharge for either right or left return conﬁ guration is the same. In some cases, it may be possible to rotate the entire unit 180 degrees if the return air connection needs to be on the opposite side. Note that rotating the unit will move the piping to the other end of the unit.

Back Discharge

Figure 5: Right Return Side to Back

Return Air

Supply Duct

Side Discharge

Return Air

Drain

Discharge Air

Connection End

Water

Connection End

Water

Drain

Discharge Air

Back Discharge

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Horizontal Installation

ondensate Pipin

Condensate Piping – Horizontal Units

Pitch the unit toward the drain as shown in Figure 2 to improve the condensate drainage. On small units (less than 2.5 tons/8.8 kW), insure that unit pitch does not cause condensate leaks inside the cabinet.

Install condensate trap at each unit with the top of the trap positioned below the unit condensate drain connection as shown in Figure 6. Design the depth of the trap (water-seal) based upon the amount of ESP capability of the blower (where 2 inches [51mm] of ESP capability requires 2 inches [51mm] of trap depth). As a general rule, 1-1/2 inch [38mm] trap depth is the minimum.

Each unit must be installed with its own individual trap and connection to the condensate line (main) or riser. Provide a means to ﬂ ush or blow out the condensate line. DO NOT install units with a common trap and/or vent.

Always vent the condensate line when dirt or air can collect in the line or a long horizontal drain line is required. Also vent when large units are working against higher external static pressure than other units connected to the same condensate main since this may cause poor drainage for all units on the line. WHEN A VENT IS INSTALLED IN THE DRAIN LINE, IT MUST BE LOCATED AFTER THE TRAP IN THE DIRECTION OF THE CONDENSATE FLOW.

Figure 6: Horizontal Condensate Connection

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* Some units include a painted drain connection. Using a threaded pipe or similar device to clear any excess paint accumulated inside this fitting may ease final drain line installation.

 CAUTION! 

CAUTION! Ensure condensate line is pitched toward drain 1/8 inch per ft [11mm per m] of run.

DUCT SYSTEM INSTALLATION

Duct System Installation

The duct system should be sized to handle the design airﬂ ow quietly. Refer to Figure 3 for horizontal duct system details or ﬁ gure 8 for vertical duct system details. A ﬂ exible connector is recommended for both discharge and return air duct connections on metal duct systems to eliminate the transfer of vibration to the duct system. To maximize sound attenuation of the unit blower, the supply and return plenums should include internal

ﬁ berglass duct liner or be constructed from ductboard for the ﬁ rst few feet. Application of the unit to uninsulated ductwork

in an unconditioned space is not recommended, as the unit’s performance will be adversely affected.

At least one 90° elbow should be included in the supply duct to reduce air noise. If air noise or excessive air ﬂ ow is a problem, the blower speed can be changed. For airﬂ ow charts, consult speciﬁ cations catalog for the series and model of the speciﬁ c unit.

If the unit is connected to existing ductwork, a previous check should have been made to insure that the ductwork has the capacity to handle the airﬂ ow required for the unit. If ducting is too small, as in the replacement of a heating only system, larger ductwork should be installed. All existing ductwork should be checked for leaks and repaired as necessary.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Vertical Installation

Vertical Unit Location

Units are not designed for outdoor installation. Locate the unit in an INDOOR area that allows enough space for service personnel to perform typical maintenance or repairs without removing unit from the mechanical room/closet. Vertical units are typically installed in a mechanical room or closet. Never install units in areas subject to freezing or where humidity levels could cause cabinet condensation (such as unconditioned spaces subject to 100% outside air). Consideration should be given to access for easy removal of the ﬁ lter and access panels. Provide sufﬁ cient room to make water, electrical, and duct connection(s).

If the unit is located in a conﬁ ned space, such as a closet, provisions must be made for return air to freely enter the space by means of a louvered door, etc. Any access panel screws that would be difﬁ cult to remove after the unit is installed should be removed prior to setting the unit. Refer to Figures 7 and 8 for typical installation illustrations. Refer to unit speciﬁ cations catalog for dimensional data.

Install the unit on a piece of rubber, neoprene or other

mounting pad material for sound isolation. The pad should be at least 3/8” [10mm] to 1/2” [13mm] in thickness. Extend the pad beyond all four edges of the unit.

2. Provide adequate clearance for ﬁ lter replacement and drain

pan cleaning. Do not block ﬁ lter access with piping, conduit or other materials. Refer to unit speciﬁ cations for dimensional data.

3. Provide access for fan and fan motor maintenance and for

servicing the compressor and coils without removing the unit.

4. Provide an unobstructed path to the unit within the closet

or mechanical room. Space should be sufﬁ cient to allow removal of the unit, if necessary.

5. Provide access to water valves and ﬁ ttings and screwdriver

access to the unit side panels, discharge collar and all electrical connections.

Downﬂ ow units may be installed directly on the ﬂ oor. The optional internal electric heat is rated for zero clearance to combustible materials.

Figure 7: Vertical Unit Mounting

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Figure 8: Typical Vertical Unit Installation Using Ducted

Return Air

Internally insulate supply duct for first 1.2 m each way to reduce noise

Use turning vanes in supply transition

Flexible canvas duct connector to reduce noise and vibration

Rounded return transition

Internally insulate return transition duct to reduce noise

Rev.: 6/2/09S

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Vertical Installation

Sound Attenuation for Vertical Units - Sound attenuation is

achieved by enclosing the unit within a small mechanical room or a closet. Additional measures for sound control include the following:

1. Mount the unit so that the return air inlet is 90° to the

return air grille. Refer to Figure 9. Install a sound bafﬂ e as illustrated to reduce line-of sight sound transmitted through return air grilles.

Mount the unit on an Unit Isolation Pad to minimize vibration transmission to the building structure. For more information on Unit Isolation Pads, contact your distributor.

Figure 9: Vertical Sound Attenuation

Return Air Inlet

Condensate Piping for Vertical Units - Vertical units utilize a condensate hose inside the cabinet as a trapping loop; therefore an external trap is not necessary . Figure 10a shows typical condensate connections. Figure 10b illustrates the internal trap for a typical vertical heat pump. Each unit must be installed with its own individual vent (where necessary) and a means to ﬂ ush or blow out the condensate drain line. Do not install units with a common trap and/or vent.

Figure 10a: Vertical Condensate Drain

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* Some units include a painted drain connection. Using a threaded pipe or similar device to clear any excess paint accumulated inside this fitting may ease final drain line installation.

Figure 10b: Vertical Internal Condensate Trap

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

High and Low Voltage Knockouts

Vibration Isolation Pad

To Thermostat

Water Connection Installation

External Flow Controller Mounting

The Flow Controller can be mounted beside the unit as shown in Figure 12. Review the Flow Controller installation manual for more details.

Water Connections-Residential (Distributor) Models

Residential models utilize swivel piping ﬁ ttings for water connections that are rated for 450 psi (3101 kPa) operating pressure. The connections have a rubber gasket seal similar to a garden hose gasket, which when mated to the ﬂ ush end of most 1” threaded male pipe ﬁ ttings provides a leak-free seal without the need for thread sealing tape or joint compound. Check for burrs and ensure that the rubber seal is in the swivel connector prior to attempting any connection (rubber seals are shipped attached to the swivel connector). DO NOT OVER TIGHTEN or leaks may occur.

GROUND-LOOP HEAT PUMP APPLICATIONS

Figure 12: Typical Ground-Loop Application

The female locking ring is threaded onto the pipe threads which holds the male pipe end against the rubber gasket, and seals the joint. HAND TIGHTEN ONLY! DO NOT OVERTIGHTEN!

Figure 11: Water Connections

Swivel Nut

Stainless steel

snap ring

Gasket

Hand Tighten

Only!

Do Not

Overtighten!

Brass Adaptor

Pre-Installation

Prior to installation, locate and mark all existing underground utilities, piping, etc. Install loops for new construction before sidewalks, patios, driveways, and other construction has begun. During construction, accurately mark all ground loop piping on the plot plan as an aid in avoiding potential future damage to the installation.

 CAUTION! 

CAUTION! The following instructions represent industry accepted installation practices for closed loop earth coupled heat pump systems. Instructions are provided to assist the contractor in installing trouble free ground loops. These instructions are recommendations only. State/provincial and local codes MUST be followed and installation MUST conform to ALL applicable codes. It is the responsibility of the installing contractor to determine and comply with ALL applicable codes and regulations.

Piping Installation

The typical closed loop ground source system is shown in Figure

12. All earth loop piping materials should be limited to polyethylene fusion only for in-ground sections of the loop. Galvanized or steel ﬁ ttings should not be used at any time due to their tendency to corrode. All plastic to metal threaded ﬁ ttings should be avoided due to their potential to leak in earth coupled applications. A ﬂ anged

ﬁ tting should be substituted. P/T plugs should be used so that ﬂ ow can be measured using the pressure drop of the unit heat

exchanger. Earth loop temperatures can range between 25 and 110°F [-4 to 43°C]. Flow rates between 2.25 and 3 gpm per ton [2.41 to

3.23 l/m per kW] of cooling capacity is recommended in these applications.

Test individual horizontal loop circuits before backﬁ lling. Test vertical U-bends and pond loop assemblies prior to installation. Pressures of at least 100 psi [689 kPa] should be used when testing. Do not exceed the pipe pressure rating. Test entire system when all loops are assembled.

Flushing the Earth Loop

Once piping is completed between the unit, Flow Controller and the ground loop (Figure 12), the loop is ready for ﬁ nal purging and charging. A ﬂ ush cart with at least a 1.5 hp [1.1 kW] pump is required to achieve enough ﬂ uid velocity in the loop piping system to purge air and dirt particles. An antifreeze solution is used in

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Ground-Loop Heat Pump Applications

most areas to prevent freezing. All air and debris must be removed from the earth loop piping before operation. Flush the loop with a high volume of water at a minimum velocity of 2 fps (0.6 m/s) in all piping. The steps below must be followed for proper ﬂ ushing.

1. Fill loop with water from a garden hose through the ﬂ ush cart

before using the ﬂ ush cart pump to insure an even ﬁ ll.

2. Once full, the ﬂ ushing process can begin. Do not allow the

water level in the ﬂ ush cart tank to drop below the pump inlet line to avoid air being pumped back out to the earth loop.

3. Try to maintain a ﬂ uid level in the tank above the return tee

so that air cannot be continuously mixed back into the ﬂ uid. Surges of 50 psi (345 kPa) can be used to help purge air pockets by simply shutting off the return valve going into the ﬂ ush cart reservoir. This “dead heads” the pump to 50 psi (345 kPa). To purge, dead head the pump until maximum pumping pressure is reached. Open the return valve and a pressure surge will be sent through the loop to help purge air pockets from the piping system.

4. Notice the drop in ﬂ uid level in the ﬂ ush cart tank when the

return valve is shut off. If air is adequately purged from the system, the level will drop only 1-2 inches (2.5 - 5 cm) in a 10” (25 cm) diameter PVC ﬂ ush tank (about a half gallon [2.3 liters]), since liquids are incompressible. If the level drops more than this, ﬂ ushing should continue since air is still being compressed in the loop ﬂ uid. Perform the “dead head” procedure a number of times. Note: This ﬂ uid level drop is

your only indication of air in the loop.

Antifreeze may be added before, during or after the ﬂ ushing procedure. However, depending upon which time is chosen, antifreeze could be wasted when emptying the ﬂ ush cart tank. See antifreeze section for more details.

Loop static pressure will ﬂ uctuate with the seasons. Pressures will be higher in the winter months than during the cooling season. This ﬂ uctuation is normal and should be considered when charging the system initially. Run the unit in either heating or cooling for a number of minutes to condition the loop to a homogenous temperature. This is a good time for tool cleanup, piping insulation, etc. Then, perform ﬁ nal ﬂ ush and pressurize the loop to a static pressure of 50-75 psi [345-517 kPa] (winter) or 35-40 psi [241-276 kPa] (summer). After pressurization, be sure to loosen the plug at the end of the Grundfos loop pump motor(s) to allow trapped air to be discharged and to insure the motor housing has been ﬂ ooded. This is not required for Taco circulators. Insure that the Flow Controller provides adequate ﬂ ow through the unit by checking pressure drop across the heat exchanger and compare to the pressure drop tables at the back of the manual.

Low temperature protection should be maintained to 15°F [9°C] below the lowest expected entering loop temperature. For example, if 30°F [-1°C] is the minimum expected entering loop temperature, the leaving loop temperature would be 25 to 22°F [-4 to -6°C] and low temperature protection should be at 15°F [-10°C]. Calculation is as follows: 30°F - 15°F = 15°F [-1°C - 9°C = -10°C].

All alcohols should be premixed and pumped from a reservoir outside of the building when possible or introduced under the water level to prevent fumes. Calculate the total volume of ﬂ uid in the piping system. Then use the percentage by volume shown in Table 2 for the amount of antifreeze needed. Antifreeze concentration should be checked from a well mixed sample using a hydrometer to measure speciﬁ c gravity.

Low Water Temperature Cutout Setting - CXM Control When antifreeze is selected, the FP1 jumper (JW3) should be clipped to select the low temperature (antifreeze 10°F [-12.2°C]) set point and avoid nuisance faults (see “Low Water Temperature Cutout Selection” in this manual). Note: Low water temperature operation requires extended range equipment.

Table 1: Approximate Fluid Volume (gal.) per 100' of Pipe

Fluid Volume (gal [liters] per 100’ [30 meters) Pipe)

Pipe Size Volume (gal) [liters]

1” 4.1 [15.3]

Copper

Rubber Hose 1” 3.9 [14.6]

Polyethylene

Unit Heat Exchanger Typical 1.0 [3.8]

Flush Cart Tank

1.25” 6.4 [23.8]

2.5” 9.2 [34.3]

3/4” IPS SDR11 2.8 [10.4]

1” iPS SDR11 4.5 [16.7]

1.25” IPS SDR11 8.0 [29.8]

1.5” IPS SDR11 10.9 [40.7] 2” IPS SDR11 18.0 [67.0]

1.25” IPS SCH40 8.3 [30.9]

1.5” IPS SCH40 10.9 [40.7] 2” IPS SCH40 17.0 [63.4]

10” Dia x 3ft tall

[254mm x 91.4cm tall]

10 [37.9]

Antifreeze

In areas where minimum entering loop temperatures drop below 40°F [5°C] or where piping will be routed through areas subject to freezing, antifreeze is required. Alcohols and glycols are commonly used as antifreeze; however your local sales manager should be consulted for the antifreeze best suited to your area.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Ground-Loop Heat Pump Applications

Table 2: Antifreeze Percentages by Volume

Minimum Temperature

Type

Methanol Propylene Glycol Ethanol*

* Must not be denatured with any petroleum based product

for Low Temperature Protection

10°F

[-12.2°C]

21% 29% 23%

15°F

[-9.4°C]

17% 24% 20%

[-6.7°C]

GROUND-WATER HEAT PUMP APPLICATIONS

20°F

13% 18% 16%

25°F

[-3.9°C]

8% 12% 11%

Open Loop - Ground Water Systems

Typical open loop piping is shown in Figure 13. Shut off valves should be included for ease of servicing. Boiler drains or other valves should be “tee’d” into the lines to allow acid ﬂ ushing of the heat exchanger. Shut off valves should be positioned to allow ﬂ ow through the coax via the boiler drains without allowing ﬂ ow into the piping system. P/T plugs should be used so that pressure drop and temperature can be measured. Piping materials should be limited to copper or PVC SCH80. Note: Due to the pressure and temperature extremes, PVC SCH40 is not recommended.

Water quantity should be plentiful and of good quality. Consult table 3 for water quality guidelines. The unit can be ordered with either a copper or cupro-nickel water heat exchanger. Consult table 3 for recommendations. Copper is recommended for closed loop systems and open loop ground water systems that are not high in mineral content or corrosiveness. In conditions anticipating heavy scale formation or in brackish water, a cupronickel heat exchanger is recommended. In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be present, an open loop system is not recommended. Heat exchanger coils may over time lose heat exchange capabilities due to build up of mineral deposits. Heat exchangers must only be serviced by a qualiﬁ ed technician, as acid and special pumping equipment is required. Desuperheater coils can likewise become scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger may require occasional acid ﬂ ushing. In some cases, the desuperheater option should not be recommended due to hard water conditions and additional maintenance required.

Water Quality Standards

Table 3 should be consulted for water quality requirements. Scaling potential should be assessed using the pH/Calcium hardness method. If the pH <7.5 and the Calcium hardness is less than 100 ppm, scaling potential is low. If this method yields numbers out of range of those listed, the Ryznar Stability and Langelier Saturation indecies should be calculated. Use the appropriate scaling surface temperature for the application, 150°F [66°C] for direct use (well water/open loop) and DHW (desuperheater); 90°F [32°F] for indirect use. A monitoring plan should be implemented in these probable scaling situations. Other water quality issues such as iron fouling, corrosion prevention and erosion and clogging should be referenced in Table 3.

Pressure Tank and Pump

Use a closed, bladder-type pressure tank to minimize mineral formation due to air exposure. The pressure tank should be sized to provide at least one minute continuous run time of the pump using its drawdown capacity rating to prevent pump short cycling. Discharge water from the unit is not contaminated in any manner and can be disposed of in various ways, depending on local building codes (e.g. recharge well, storm sewer, drain ﬁ eld, adjacent stream or pond, etc.). Most local codes forbid the use of sanitary sewer for disposal. Consult your local building and zoning department to assure compliance in your area. The pump should be sized to handle the home’s domestic water load (typically 5-9 gpm [23-41 l/m]) plus the ﬂ ow rate required for the heat pump. Pump sizing and expansion tank must be chosen as complimentary items. For example, an expansion tank that is too small can causing premature pump failure due to short cycling. Variable speed pumping applications should be considered for the inherent energy savings and smaller pressure tank requirements.

Water Control Valve

Note the placement of the water control valve in ﬁ gure 13. Always maintain water pressure in the heat exchanger by placing the water control valve(s) on the discharge line to prevent mineral precipitation during the off-cycle. Pilot operated slow closing valves are recommended to reduce water hammer. If water hammer persists, a mini-expansion tank can be mounted on the piping to help absorb the excess hammer shock. Insure that the total ‘VA’ draw of the valve can be supplied by the unit transformer. For instance, a slow closing valve can draw up to 35VA. This can overload smaller 40 or 50 VA transformers depending on the other controls in the circuit. A typical pilot operated solenoid valve draws approximately 15VA (see Figure 22). Note the special wiring diagrams for slow closing valves (Figures 23 & 24).

Flow Regulation

Flow regulation can be accomplished by two methods. One method of ﬂ ow regulation involves simply adjusting the ball valve or water control valve on the discharge line. Measure the pressure drop through the unit heat exchanger, and determine ﬂ ow rate from tables 9a through 9c. Since the pressure is constantly varying, two pressure gauges may be needed. Adjust the valve until the desired ﬂ ow of 1.5 to 2 gpm per ton [2.0 to 2.6 l/m per kW] is achieved. A second method of ﬂ ow control requires a ﬂ ow control device

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

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Ground-Water Heat Pump Applications

mounted on the outlet of the water control valve. The device is typically a brass ﬁ tting with an oriﬁ ce of rubber or plastic material that is designed to allow a speciﬁ ed ﬂ ow rate. On occasion, ﬂ ow control devices may produce velocity noise that can be reduced by applying some back pressure from the ball valve located on the discharge line. Slightly closing the valve will spread the pressure drop over both devices, lessening the velocity noise. NOTE: When

EWT is below 50°F [10°C], a minimum of 2 gpm per ton (2.6 l/m per kW) is required.

Water Coil Low Temperature Limit Setting

For all open loop systems the 30°F [-1.1°C] FP1 setting (factory setting-water) should be used to avoid freeze damage to the unit. See “Low Water Temperature Cutout Selection” in this manual for details on the low limit setting.

Figure 13: Typical Open Loop/Well Application

 CAUTION! 

CAUTION! Refrigerant pressure activated water regulating

valves should never be used with this equipment.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Water Quality Standards

Table 3: Water Quality Standards

Water Quality

Parameter

Material

Closed

Recirculating

Open Loop and Recirculating Well

Scaling Potential - Primary Measurement

Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below pH/Calcium Hardness Method

All

pH < 7.5 and Ca Hardness <100ppm

Index Limits for Probable Scaling Situations - (Operation outside these limits is not recommended)

Scaling indexes should be calculated at 66°C for direct use and HWG applications, and at 32°C for indirect HX use. A monitoring plan should be implemented.

Ryznar Stability Index If >7.5 minimize steel pipe use.

Langelier Saturation Index

All

- 6.0 - 7.5

If <-0.5 minimize steel pipe use. Based upon 66°C HWG and

-0.5 to +0.5

Direct well, 29°C Indirect Well HX

Iron Fouling

Iron Fe2+(Ferrous) (Bacterial Iron potential)

Iron Fouling

All

(ferrous)>0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.

If Fe

Above this level deposition will occur.

<0.2 ppm (Ferrous)

<0.5 ppm of Oxygen

Corrosion Prevention

Hydrogen Sulfide (H

Ammonia ion as hydroxide, chloride, nitrate and sulfate compounds

Maximum Chloride Levels

6 - 8.5

All

Copper

Cupronickel

304 S 316 S

Titanium - >1000 ppm >550 ppm >375 ppm

Monitor/treat as

needed

- <0.5 ppm

- <20ppm NR NR

S - <400 ppm <250 ppm <150 ppm S - <1000 ppm <550 ppm < 375 ppm

- <150 ppm NR NR

Minimize steel pipe below 7 and no open tanks with pH <8

At H

S>0.2 ppm, avoid use of copper and copper nickel piping or HX's.

Copper alloy (bronze or brass) cast components are OK to <0.5 ppm.

Rotten egg smell appears at 0.5 ppm level.

Maximum Allowable at maximum water temperature.

10$C24$C38

6 - 8.5

<0.5 ppm

Erosion and Clogging

<10 ppm of particles and a maximum velocity of 1.8 m/s

Particulate Size and Erosion

Manufacturer

The ClimateMaster Water Quality Table provides water quality requirements for ClimateMaster coaxial heat exchangers. When water properties are outside of those requirements, an external secondary heat exchanger must be used to isolate the heat pump heat exchanger from the unsuitable water. Failure to do so will void the warranty for the coaxial heat exchanger.

Notes:

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All

Filtered for maximum 841 micron [0.84 mm, 20 mesh] size.

closed pressurized piping system.

Manufacturer

<10 ppm (<1 ppm "sandfree” for reinjection) of particles and a maximum velocity of 1.8 m/s. Filtered for maximum 841 micron 0.84 mm, 20 mesh] size. Any particulate that is not removed can potentially clog components.

Rev.: 3/22/2012

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Hot Water Generator

The HWG (Hot Water Generator) or desuperheater option provides considerable operating cost savings by utilizing excess heat energy from the heat pump to help satisfy domestic hot water requirements. The HWG is active throughout the year, providing virtually free hot water when the heat pump operates in the cooling mode or hot water at the COP of the heat pump during operation in the heating mode. Actual HWG water heating capacities are provided in the appropriate heat pump performance data.

Heat pumps equipped with the HWG option include a built-in water to refrigerant heat exchanger that eliminates the need to tie into the heat pump refrigerant circuit in the ﬁ eld. The control circuit and pump are also built in for residential equipment. Figure 14 shows a typical example of HWG water piping connections on a unit with built-in circulating pump. This piping layout reduces scaling potential.

The temperature set point of the HWG is ﬁ eld selectable to 125°F or 150°F . The 150°F set point allows more heat storage from the HWG. For example, consider the amount of heat that can be generated by the HWG when using the 125°F set point, versus the amount of heat that can be generated by the HWG when using the 150°F set point.

In a typical 50 gallon two-element electric water heater the lower element should be turned down to 100°F, or the lowest setting, to get the most from the HWG. The tank will eventually stratify so that the lower 80% of the tank, or 40 gallons, becomes 100°F (controlled by the lower element). The upper 20% of the tank, or 10 gallons, will be maintained at 125°F (controlled by the upper element).

Electric water heaters are recommended. If a gas, propane, or oil water heater is used, a second preheat tank must be installed (Figure 15). If the electric water heater has only a single center element, the dual tank system is recommended to insure a usable entering water temperature for the HWG.

Typically a single tank of at least 52 gallons (235 liters) is used to limit installation costs and space. However, a dual tank, as shown in Figure 15, is the most efﬁ cient system, providing the maximum storage and temperate source water to the HWG.

It is always advisable to use water softening equipment on domestic water systems to reduce the scaling potential and lengthen equipment life. In extreme water conditions, it may be necessary to avoid the use of the HWG option since the potential cost of frequent maintenance may offset or exceed any savings. Consult Table 3 for scaling potential tests.

Figure 14: Typical HWG Installation

Powered

Water

Heater

Cold Inlet

Shut Off Valve #1

Shut Off Valve #4

Upper

element to

120 - 130°F

[49 - 54°C]

Lower

element to

100 - 110°F

[38 - 43°C]

Shut-off

Valve #3

Hot Outlet

to home

Using a 125°F set point, the HWG can heat the lower 40 gallons of water from 100°F to 125°F, providing up to 8,330 btu’s of heat. Using the 150°F set point, the HWG can heat the same 40 gallons of water from 100°F to 150°F and the remaining 10 gallons of water from 125°F to 150°F, providing a total of up to 18,743 btu’s of heat, or more than twice as much heat as when using the 125°F set point.

This example ignored standby losses of the tank. When those losses are considered the additional savings are even greater.

 WARNING! 

WARNING! SCALDING OR BURNS. THE 150°F SET POINT MUST ONLY BE USED ON SYSTEMS THAT EMPLOY AN APPROVED ANTI-SCALD VALVE.

A 150°F SETPOINT MAY LEAD TO

Shut Off Valve #2

Insulated water lines 5/8” OD, 50 ft maximum (one way) [16mm OD, 15 meters maximum]

Figure 15: HWG Double Tank In stal la tion

Cold Inlet from

Domestic supply

Hot Outlet

Unpowered

Shut-off Valve #3

Shut Off Valve #2

Water Heater

Insulated water lines - 5/8” OD, 50 ft maximum (one way)

[16mm OD, 15 meters maximum]

Field supplied 3/4’ brass nipple and ‘T’

Hot Outlet to

house

Cold Inlet

Powered

Upper element to 130°F [54°C]

Lower element to 120°F [49°C]

Shut-off

Valve #1

Shut-off

Valve #4

Water Heater

Field Supplied 3/4” brass nipple and “T”

(or owner preference)

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Hot Water Generator

Installation

The HWG is controlled by two sensors and a microprocessor control. One sensor is located on the compressor discharge line to sense the discharge refrigerant temperature. The other sensor is located on the HWG heat exchanger’s “Water In” line to sense the potable water temperature.

ѥWARNING! ѥ

WARNING! THE SENSORS BE DISCONNECTED OR REMOVED AS FULL LOAD CONDITIONS CAN DRIVE HOT WATER TANK TEMPERATURES FAR ABOVE SAFE TEMPERATURE LEVELS IF SENSORS HAVE BEEN DISCONNECTED OR REMOVED.

The microprocessor control monitors the refrigerant and water temperatures to determine when to operate the HWG. The HWG will operate any time the refrigerant temperature is sufÄ ciently above the water temperature. Once the HWG has satisÄ ed the water heating demand during a heat pump run cycle, the controller will cycle the pump at regular Intervals to determine if an additional HWG cycle can be utilized. The microprocessor control Includes 3 DIP switches, SW10 (HWG PUMP TEST), SW11 (HWG TEMP), and SW12 (HWG STATUS).

SW10 HWG PUMP TEST. When this switch is in the “ON” position, the HWG pump is forced to operate even if there is no call for the HWG. This mode may be beneÄ cial to assist in purging the system of air during Initial start up. When SW10 is in the “OFF” position, the HWG will operate normally. This switch is shipped from the factory in the “OFF” (normal) position. NOTE; If left in the “On” position for 5 minutes, the pump control will revert to normal operation.

SW11 HWG TEMP. The control setpoint of the HWG can be set to either of two temperatures, 125°F or 150°F. When SW11 is in the “ON” position the HWG setpoint is 150°F. When SW11 is in the “OFF” position the HWG setpoint is

UNDER NO CIRCUMSTANCES SHOULD

ANTI-SCALD

VALVE PIPING

CONNECTIONS

ANTI-SCALD

VALV E

HOT WATER

TO HOUSE

125°F. This switch Is shipped from the factory in the “OFF” (125°F) position.

SW12 HWG STATUS. This switch controls operation of the HWG. When SW12 is in the “ON” position the HWG is disabled and will not operate. When SW12 is in the “OFF” position the HWG is in the enabled mode and will operate normally. This switch is shipped from the factory in the “ON” (disabled) position. CAUTION: DO NOT PLACE THIS

SWITCH IN THE ENABLED POSITION UNITL THE HWG PIPING IS CONNECTED, FILLED WITH WATER, AND PURGED OR PUMP DAMAGE WILL OCCUR.

CHECK VALVE

8” MAX

WATER HEATER

COLD WATER

SUPPLY

ѥWARNING! ѥ

WARNING! HWG WILL RESULT IN WATER TEMPERATURES SUFFICIENT TO CAUSE SEVERE PHYSICAL INJURY IN THE FORM OF SCALDING OR BURNS, EVEN WHEN THE HOT WATER TANK TEMPERATURE SETTING IS VISIBLY SET BELOW 150°F. THE 150°F HWG SETPOINT MUST ONLY BE USED ON SYSTEMS THA T EMPLOY AN APPROVED ANTI-SCALD VALVE (PART NUMBER AVAS4) AT THE HOT WATER STORAGE TANK WITH SUCH VALVE PROPERLY SET TO CONTROL WATER TEMPERATURES DISTRIBUTED TO ALL HOT WATER OUTLETS AT A TEMPERATURE LEVEL THAT PREVENTS SCALDING OR BURNS!

USING A 150°F SETPOINT ON THE

When the control is powered and the HWG pump output is not active, the status LED (AN1) will be “On”. When the HWG pump output is active for water temperature sampling or HWG operation, the status LED will slowly Å ash (On 1 second, Off 1 second).

If the control has detected a fault, the status LED will Å ash a numeric fault code as follows:

Hot Water Sensor Fault 1 Å ash Compressor Discharge sensor fault 2 Å ashes High Water Temperature (>160ºF) 3 Å ashes Control Logic Error 4 Å ashes

Fault code Å ashes have a duration of 0.4 seconds with a 3 second pause between fault codes. For example, a “Compressor Discharge sensor fault” will be four Å ashes

0.4 seconds long, then a 3 second pause, then four Å ashes again, etc.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Hot Water Generator

Warning! The HWG pump Is fully wired from the factory. Use extreme caution when working around the microprocessor control as it contains line voltage connections that presents a shock hazard that can cause severe injury or death!

The heat pump, water piping, pump, and hot water tank should be located where the ambient temperature does not fall below 50°F [10°C]. Keep water piping lengths at a minimum. DO NOT use a one way length greater than 50 ft. (one way) [15 m]. See Table 7 for recommended piping sizes and maximum lengths.

All installations must be in accordance with local codes. The installer is responsible for knowing the local requirements, and for performing the installation accordingly. DO NOT connect the pump wiring until “Initial Start-Up” section, below. Powering the pump before all installation steps are completed may damage the pump.

Water Tank Preparation

1. Turn off power or fuel supply to the hot water tank.

2. Connect a hose to the drain valve on the water tank.

3. Shut off the cold water supply to the water tank.

4. Open the drain valve and open the pressure relief valve or a hot water faucet to drain tank.

5. When using an existing tank, it should be ﬂ ushed with cold water after it is drained until the water leaving the drain hose is clear and free of sediment.

6. Close all valves and remove the drain hose.

7. Install HWG water piping.

insure maximum utilization of the heat available from the refrigeration system and conserve the most energy. On tanks with both upper and lower elements and thermostats, the lower element should be turned down to 100°F [38°C] or the lowest setting; the upper element should be adjusted to 120-130°F [49-54°C]. Depending upon the speciﬁ c needs of the customer, you may want to adjust the upper element differently. On tanks with a single thermostat, a preheat tank should be used (Fig 15).

6. Replace access cover(s) and restore power or fuel supply.

Initial Start-Up

1. Make sure all valves in the HWG water circuit are fully open.

2. Turn on the heat pump and allow it to run for 10-15 minutes.

3. Set SW12 to the “OFF” position (enabled) to engage the HWG.

4. The HWG pump should not run if the compressor is not running.

5. The temperature difference between the water entering and leaving the HWG coil should be approximately 5-10°F [36°C].

6. Allow the unit to operate for 20 to 30 minutes to insure that it is functioning properly.

HWG Water Piping

1. Using at least 5/8” [16mm] O.D. copper, route and install the water piping and valves as shown in Figures 14 or 15. Install an approved anti-scald valve if the 150°F HWG setpoint is or will be selected. An appropriate method must be employed to purge air from the HWG piping. This may be accomplished by ﬂ ushing water through the HWG (as In Figures 14 and

15) or by Installing an air vent at the high point of the HWG piping system.

2. Insulate all HWG water piping with no less than 3/8” [10mm] wall closed cell insulation.

3. Open both shut off valves and make sure the tank drain valve is closed.

Water Tank Reﬁ ll

1. Close valve #4. Ensure that the HWG valves (valves #2 and #3) are open. Open the cold water supply (valve #1) to ﬁ ll the tank through the HWG piping. This will purge air from the HWG piping.

2. Open a hot water faucet to vent air from the system until water ﬂ ows from faucet; turn off faucet. Open valve #4.

Depress the hot water tank pressure relief valve handle to ensure that there is no air remaining in the tank.

4. Inspect all work for leaks.

Before restoring power or fuel supply to the water heater, adjust the temperature setting on the tank thermostat(s) to

Table 7: HWG Water Piping Sizes and Length

Unit

Nominal

Tonnage

1.5 0.6 50 -

2.0 0.8 50 -

2.5 1.0 50 -

3.0 1.2 50 -

3.5 1.4 50 -

4.0 1.6 45 50

5.0 2.0 25 50

6.0 2.4 10 50

*Maximum length is equivalent length (in feet) one way of type L copper.

Nominal

HWG Flow

(gpm)

1/2" Copper

(max length*)

3/4" Copper

(max length*)

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Electrical - Line Voltage

 WARNING!   CAUTION! 

WARNING! To avoid possible injury or death due to electrical shock, open the power supply disconnect switch and secure it in an open position during installation.

Table 4a: HT Series Electrical Data

All TT Units with Emerson ECM Fan Motor TT Units (ECM) Standard TT Units (ECM) with ClimaDry

HT HT HT

Model

026 11.7 58.3 1 0.5 1.7 3.9 16.1 19.0 30 0.8 16.9 19.8 30

024

038 15.3 83.0 1 0.5 1.7 3.9 19.7 23.5 35 0.8 20.5 24.3 35

036

049 21.2 104.0 1 0.5 1.7 6.9 28.6 33.9 50 1.1 29.7 35.0 50

048

064 27.1 152.9 1 0.5 1.7 6.9 34.5 41.2 60 1.1 35.6 42.3 60

060

072 29.7 179.2 1 0.5 1.7 6.9 37.1 44.5 70 1.1 38.2 45.6 70

070

Compressor

RLA LRA Qty

HWG Pump

FLA

Rated Voltage of 208-230/60/1 Min/Max Voltage of 197/254 HACR circuit breaker in USA only All fuses Class RK-5

Ext

Loop

Pump

FLA

Fan

Motor

FLA

Total

Unit FLA

Min

Circuit

Amps

CAUTION! Use only copper conductors for ﬁ eld installed electrical wiring. Unit terminals are not designed to accept other types of conductors.

Max

Fuse/

HACR

(2)

ClimaDry

Pump

FLA

Total

Unit FLA

Circuit

Amps

Min

Max/ Fuse

HACR

(2)

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Electrical - Line Voltage

Figure 16: HT Single Phase Line Voltage

 WARNING! 

WARNING! Disconnect electrical power source to prevent injury or death from electrical shock.

 CAUTION! 

CAUTION! Use only copper conductors for ﬁ eld installed electrical wiring. Unit terminals are not designed to accept other types of conductors.

Electrical - Line Voltage

All ﬁ eld installed wiring, including electrical ground, must comply with the National Electrical Code as well as all applicable local codes. Refer to the unit electrical data for fuse sizes. Consult wiring diagram for ﬁ eld connections that must be made by the installing (or electrical) contractor.

All ﬁ nal electrical connections must be made with a length of ﬂ exible conduit to minimize vibration and sound transmission to the building.

Field Wiring

General Line Voltage Wiring

Be sure the available power is the same voltage and phase shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric Code, whichever is applicable.

Power Connection

Line voltage connection is made by connecting the incoming line voltage wires to the “L” side of the contactor as shown in Figure

16. Consult Tables 4a through 4b for correct fuse size.

208 Volt Operation

All residential 208-230 Volt units are factory wired for 230 Volt operation. The transformer may be switched to the 208V tap as illustrated on the wiring diagram by switching the red (208V) and the orange (230V) wires at the contactor terminal.

Blower Speed Selection – Units with PSC Motor

PSC (Permanent Split Capacitor) blower fan speed can be changed by moving the blue wire on the fan motor terminal block to the desired speed as shown in Figure 17. Optional ECM motor speeds are set via low voltage controls (see “ECM Blower Control”). Most units are shipped on the medium speed tap. Consult speciﬁ cations catalog for speciﬁ c unit airﬂ ow tables. Typical unit design delivers rated airﬂ ow at nominal static (0.15 in. w.g. [37Pa]) on medium speed and rated airﬂ ow at a higher static (0.4 to 0.5 in. w.g. [100 to 125 Pa]) on high speed for applications where higher static is required. Low speed will deliver approximately 85% of rated airﬂ ow at 0.10 in. w.g. [25 Pa].

Unit Power Supply

(see electrical table for wire

and breaker size)

Special Note for AHRI Testing: To achieve rated airﬂ ow for AHRI testing purposes on all PSC products, it is necessary to change the fan speed to “HI” speed. When the heat pump has experienced less than 100 operational hours and the coil has not had sufﬁ cient time to be “seasoned”, it is necessary to clean the coil with a mild surfactant such as Calgon to remove the oils left by manufacturing processes and enable the condensate to properly “sheet” off of the coil.

Figure 17: PSC Motor Speed Selection

Connect the blue wire to:

H for High speed fan M for Medium speed fan L for Low speed fan

Medium is factory setting

Fan Motor

HWG Wiring (Split Units Only)

The hot water generator pump power wiring is disabled at the factory to prevent operating the HWG pump “dry.” After all HWG piping is completed and air purged from the water piping, the pump power wires should be applied to terminals on the HWG power block PB2 as shown in the unit wiring diagram. This connection can also serve as a HWG disable when servicing the unit.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Electrical - Low Voltage Wiring

Thermostat Connections

The thermostat should be wired directly to the CXM board (units with PSC fan). Units with optional ECM motor include factory wiring from the CXM board to the ECM interface board. Thermostat wiring for these units should be connected to the ECM interface board. Figure 18 shows wiring for TT/ TS units with PSC or optional ECM motor. See “Electrical –

Thermostat” for speciÄ c terminal connections.

Figure 18: TT/TS Low Voltage Field Wiring

HT Low Voltage Field Wiring

Low voltage Ä eld wiring for units with PSC FAN (ECM board will not be present)

Low voltage Ä eld wiring for units with ECM fan

Low Water Temperature Cutout Selection

The CXM control allows the Ä eld selection of low water (or water-antifreeze solution) temperature limit by clipping jumper JW3, which changes the sensing temperature associated with thermistor FP1. Note that the FP1 thermistor is located on the refrigerant line between the coaxial heat exchanger and expansion device (TXV). Therefore, FP1 is sensing refrigerant temperature, not water temperature, which is a better indicatio of how water Å ow rate/temperature is affecting the refrigeration circuit.

The factory setting for FP1 is for systems using water (30°F [-1.1°C] refrigerant temperature). In low water temperature (extended range) applications with antifreeze (most ground loops), jumper JW3 should be clipped as shown in Figure 19 to change the setting to 10°F [-12.2°C] refrigerant temperature, a more suitable temperature when using an antifreeze solution. All residential units include water/ refrigerant circuit insulation to prevent internal condensation, which is required when operating with entering water temperatures below 59°F [15°C].

Figure 19: FP1 Limit Setting

CXM PCB

JW3-FP1

jumper should

be clipped for

low temperature

operation

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Electrical - Low Voltage Wiring

Accessory Connections

A terminal paralleling the compressor contactor coil has been provided on the CXM control. Terminal “A” is designed to control accessory devices, such as water valves. Note: This terminal should be used only with 24 Volt signals and not line voltage. Terminal “A” is energized with the compressor contactor. See Figure 20 or the speciﬁ c unit wiring diagram for details.

Figure 20: Accessory Wiring

Water Solenoid Valves

An external solenoid valve(s) should be used on ground water installations to shut off ﬂ ow to the unit when the compressor is not operating. A slow closing valve may be required to help reduce water hammer. Figure 20 shows typical wiring for a 24VAC external solenoid valve. Figures 21 and 22 illustrate typical slow closing water control valve wiring for Taco 500 series (Manufacturer P/N AVM...) and Taco SBV series valves. Slow closing valves take approximately 60 seconds to open (very little water will ﬂ ow before 45 seconds). Once fully open, an end switch allows the compressor to be energized. Only relay or triac based electronic thermostats should be used with slow closing valves. When wired as shown, the slow closing valve will operate properly with the following notations:

1. The valve will remain open during a unit lockout.

2. The valve will draw approximately 25-35 VA through the “Y”

signal of the thermostat. Note: This valve can overheat the anticipator of an electromechanical thermostat. Therefore, only relay or triac based thermostats should be used.

Two-stage Units

HT two-stage units should be designed with two parallel valves for ground water applications to limit water use during ﬁ rst stage operation. For example, at 1.5 gpm/ ton [2.0 l/m per kW], a 048 unit requires 6 gpm [23 l/m] for full load (2nd stage) operation, but only 4 gpm [15 l/m] during 1st stage operation. Since the unit will operate on ﬁ rst stage 80-90% of the time, signiﬁ cant water savings can be realized by using two parallel solenoid valves with two ﬂ ow regulators. In the example above, stage one solenoid would be installed with a 4 gpm [15 l/m] ﬂ ow regulator on the outlet, while stage two would utilize a 2 gpm [8 l/m] ﬂ ow regulator. When stage one is operating, the second solenoid valve will be closed. When stage two is operating, both valves will be open, allowing full load ﬂ ow rate.

Figure 23 illustrates piping for two-stage solenoid valves. Review ﬁ gures 20-22 for wiring of stage one valve. Stage two valve should be wired between terminal “Y2” (ECM board) and terminal “C.”

Note: When EWT is below 50°F [10°C], a minimum of 2 gpm per ton (2.6 l/m per kW) is required.

Figure 21: AVM Valve Wiring

Heater Switch

AVM

Taco Valve

Thermostat

Figure 22: Taco SBV Valve Wiring

Figure 23: Two-Stage Piping

OUT

Solenoid

Valve

Stage 2

From Water Source

NOTE: Shut-off valves, strainers and other required components not shown.

Stage 1

Flow

Regulator

To Discharge

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Figure 24: Units With Optional ECM Fan.

Figure 25: Typical Thermostat 2 Heat/1 Cool (PSC Fan)

Thermostat Installation

The thermostat should be located on an interior wall in a larger room, away from supply duct drafts. DO NOT locate the thermostat in areas subject to sunlight, drafts or on external walls. The wire access hole behind the thermostat may in certain cases need to be sealed to prevent erroneous temperature measurement. Position the thermostat back plate against the wall so that it appears level and so the thermostat wires protrude through the middle of the back plate. Mark the position of the back plate mounting holes and drill holes with a 3/16” (5mm) bit. Install supplied anchors and secure plate to the wall. Thermostat wire must be 18 AWG wire. Wire the appropriate thermostat as shown in Figures 24 and 25 to the low voltage terminal strip on the CXM (units with PSC motor) or ECM control board (units with ECM motor). Practically any heat pump thermostat will work with these units, provided it has the correct number of heating and cooling stages.

ATP32U04 Thermostat

Connection to ECM Control

Compressor

Compressor Stage 2

Reversing Valve

Fan

24Vac Hot

24Vac Common

Fault LED

ECM

Board

Y1 Y2

O G R C

AL1

Y1 Y2

O G R C

Dehumidification

Units with CXM or DXM board and ECM fan motor, utilizing ECM dehumidification mode (without ClimaDry option)

Notes:

1) Units with whole house dehumidification option have slightly different thermostat wiring.Terminal DH at the thermostat is connected to terminal H at the DXM board

2) ECM dehumidification mode slows down fan speed in the cooling mode when dehumidification output from thermostat is active. Normal heating and cooling fan speeds are not affected.

3) ECM board DIP switch SW9 must be in dehumid. mode for

ECM dehumidification mode.

Auxiliary Heat

ATM21U01 Thermostat

Connection to CXM Control

Compressor Heating Stage 2 Reversing Valve

Fan

24Vac Hot

24Vac Common

Fault LED

Y2/W

O G R C

Y W O G R C

AL1

CXM

NOTICE: Units with ClimaDry whole house dehumidiÄ cation option require a separate humidistat or thermostat part number ATP32U04 (See ClimaDry AOM for more details).

ѥCAUTION! ѥ

CAUTION! Refrigerant pressure activated water regulating valves should never be used with ClimateMaster equipment.

CAUTION! Many units are installed with a factory or ¿ eld supplied manual or electric shut-off valve. DAMAGE WILL OCCUR if shut-off valve is closed during unit operation. A high pressure switch must be installed on the heat pump side of any ¿ eld provided shut-off valves and connected to the heat pump controls in series with the built-in refrigerant circuit high pressure switch to disable compressor operation if water pressure exceeds pressure switch setting. The ¿ eld installed high pressure switch shall have a cut-out pressure of 300 psig and a cut-in pressure of 250 psig. This pressure switch can be ordered from ClimateMaster with a 1/4” internal À are connection as part number 39B0005N02.

Electrical - Thermostat Wiring

Manufacturer

Units with CXM or DXM board and ECM fan motor, utilizing ECM dehumidiﬁ cation mode Notes:

1) ECM dehumidiﬁ cation mode slows down fan speed in the cooling mode when dehumidiﬁ cation output from thermostat is active. Normal heating and cooling fan speeds are not affected.

2) ECM board DIP switch SW9 must be in dehumid. mode for ECM dehumidiﬁ cation mode.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

ECM Blower Control

The ECM fan is controlled by an interface board that converts thermostat inputs and ﬁ eld selectable CFM settings to signals used by the ECM motor controller. Units manufactured before July 2005 have version I (P/N 69243707). Units manufactured after July 2005 have version II (P/N 17B0019N01). Fan speeds are selected with jumpers for version I or via a nine position DIP switch for version II. To take full advantage of the ECM motor features, a multi-stage thermostat should be used (2-stage heat/2-stage cool or 3-stage heat/2-stage cool).

HFC-410A packaged units built after May 2009 have ECM controller version III (P/N 17B0034N01). This controller includes logic and a relay to control the HWG functions.

Note: Power must be off to the unit for at least three seconds before the ECM motor will recognize a speed change. The motor will recognize a change in the CFM Adjust or dehumidiﬁ cation mode settings while the unit is powered.

There are four different airﬂ ow settings from lowest airﬂ ow rate (speed tap 1) to the highest airﬂ ow rate (speed tap 4). The charts below indicate settings for both versions of the ECM interface board, followed by detailed information for each setting.

Cooling Settings: The cooling setting determines the cooling (normal) CFM for all units with ECM motor. Cooling (normal) setting is used when the unit is not in dehumidiﬁ cation mode. Tap 1 is the lowest CFM setting, while tap 4 is the highest CFM setting. To avoid air coil freeze-up, tap 1 may not

operating in the normal mode, the cooling airﬂ ow settings are determined by the cooling tap setting above. When dehumidiﬁ cation is enabled there is a reduction in airﬂ ow

in cooling to increase the moisture removal of the heat pump. Consult submittal data or speciﬁ cations catalog for the speciﬁ c unit series and model to correlate speed tap to airﬂ ow in CFM. The dehumidiﬁ cation mode can be enabled in two ways.

1. Constant Dehumidiﬁ cation Mode: When the dehumidiﬁ cation mode is selected (via DIP switch or jumper setting), the ECM motor will operate with a multiplier applied to the cooling CFM settings (approx. 20-25% lower airﬂ ow). Any time the unit is running in the cooling mode, it will operate at the lower airﬂ ow to improve latent capacity. The “DEHUM” LED will be illuminated at all times. Heating airﬂ ow is not affected. NOTE: Do not select dehumidiﬁ cation mode if cooling setting is tap 1.

2. Automatic (Humidistat-controlled) Dehumidiﬁ cation Mode: When the dehumidiﬁ cation mode is selected (via DIP switch or jumper setting) AND a humidistat is connected to terminal DH (version II) or HUM (version I), the cooling airﬂ ow will only be reduced when the humidistat senses that additional dehumidiﬁ cation is required. The DH (or HUM) terminal is reverse logic. Therefore, a humidistat (not dehumidistat) is required. The “DEHUM” LED will be illuminated only when the humidistat is calling for dehumidiﬁ cation mode. Heating airﬂ ow is not affected. NOTE: Do not select dehumidiﬁ cation mode if cooling setting is tap 1.

be used if the dehumidiﬁ cation mode is selected. Consult submittal data or speciﬁ cations catalog for the speciﬁ c unit series and model to correlate speed tap setting to airﬂ ow in CFM.

Heating Settings: The heating setting determines the heating CFM for HT units. Tap 1 is the lowest CFM setting, while tap 4 is

the highest CFM setting. Consult submittal data or speciﬁ cations catalog for the speciﬁ c unit series and model to correlate speed tap setting to airﬂ ow in CFM.

Auxiliary/Emergency Heat Settings: The auxiliary/emergency heat setting determines the CFM when the unit is in auxiliary heat or emergency heat mode. This setting is used for residential units with internal electric heat. When auxiliary electric heat is energized (i.e. compressor and electric heat), the greater of the auxiliary/emergency or heating setting will be used. A “G” (fan) signal must be present from the thermostat for electric heat to operate. Consult the submittal data or speciﬁ cations catalog for the speciﬁ c unit series and model to correlate speed tap setting to airﬂ ow in CFM.

CFM Adjust Settings: The CFM adjust setting allows four selections. The NORM setting is the factory default position. The + or – settings adjust the airﬂ ow by +/- 15%. The +/- settings are used to “ﬁ ne tune” airﬂ ow adjustments. The TEST setting runs the ECM motor at 70% torque, which causes the motor to operate like a standard PSC motor, and disables the CFM counter.

Dehumidiﬁ cation Mode Settings: The dehumidiﬁ cation mode setting provides ﬁ eld selection of humidity control. When

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

ECM Blower Control

Table 5: ECM Board Tap Settings

Cooling settings: TT, TS Units Heating settings: TT, TS Units Aux/Emerg Heat settings: TT, TS Units*

Tap HP CFM Tap

Setting Jumper SW1 SW2 Setting Jumper SW3 SW4 Setting Jumper SW5 SW6

1 1 ON ON 1 1 ON ON 1 1 ON ON 2 2 ON OFF 2 2 ON OFF 2 2 ON OFF 3 3 OFF ON 3 3 OFF ON 3 3 OFF ON 4 4 OFF OFF 4 4 OFF OFF 4 4 OFF OFF

CFM Adjust settings: TT, TS Units Dehum Mode settings: TT, TS Units

Tap CFM Adj Tap Dehumid

Setting Jumper SW7 SW8 Setting Jumper

TEST 1 ON ON NORM pins 1,2

+ 3OFFON

NORM 4 OFF OFF

HT Units HT Units HT Units

Version I Version I Version I 69243707 69243707 69243707

Version I Version I 69243707 69243707

2 ON OFF Dehumid pins 2,3

Version II and III

(17B0019N01 & 17B0034N01)

DIP Switch DIP Switch

DELAY

Version II and III

(17B0019N01 & 17B0034N01)

HT Units HT Units

Version II and III

(17B0019N01 & 17B0034N01)

DIP Switch DIP Switch

Version II and III

(17B0019N01 & 17B0034N01)

Tap AUX CFM

(17B0019N01 & 17B0034N01)

*Residential Units

SW9

OFF

Version II and III

DIP Switch

Figure 26a: ECM Version II Interface Layout

1/4" Spade

Connections

to CXM or

DXM Board

Thermostat

Connections

Dehumidification

LED

GGGGR

TB1

Y2 Y1 G O W C R

DH AL1

A AL1

Fan Speed Selection DIP Switch

DEHUM

OFF

SW9

SW8

SW7

SW6

SW5

SW4

SW3

SW2

SW1

CFM

Thermostat Input LEDs

CFM Counter 1 flash per 100 CFM

ECM Motor Low Voltage Connector

Figure 26c: ECM Version III Interface Layout

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6:

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6:

6:

6:

6:

6:

6:

6:

6:

6SDGH &RQQHFWLRQV WR&;0RU ';0%RDUG

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Figure 26b: ECM Version I Interface Layout

Adjust

Delay

J01

CFM

1/4" Spade Connections to CXM or DXM Board

Thermostat Input LEDs

CFM Counter 1 flash per 100C

ECM Motor Low Voltage Connector

Dehumidification LED

GY1Y2OW1EMCR

LED's

Thermostat Connections

G OW1EM

NC C R

Hum

Dehumid

2 3

2 3 4

TB01

78910

1 2

Norm

CFM

Norm

Tes t

(+)

(–)

CFM

Aux

CFM

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(&00RWRU /RZ 9ROWDJH &RQQHFWRU

+:*3XPS 5HOD\

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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

HT Series ECM Blower Performance Data

Residential

Airﬂ ow in CFM with wet coil and clean air ﬁ lter

Max

Model

ESP

(in. wg)

024

026 1.0 1/2

036

038 0.9 1/2

048

049 1.0 1

060

064 0.7 1

072 0.7 1

070

During Auxiliary operation (residential units only) the CFM will run at the higher if the heating (delay jumper) or AUX settings Airﬂ ow is controlled within +/- 5% up to Max ESP shown with wet coil and standard 1” ﬁ berglass ﬁ lter Do not select Dehumidiﬁ cation mode if HP CFM is on setting 1 All units AHRI/ISO/ASHRAE 13256-1 rated HP (Cooling) Delay (Heating) CFM Setting 3

Note: See the ECM Blower Control section for information on setting taps.

Fan

Motor

(hp)

Range

Default 700 525 550 425 750 600 350 850

Maximum 1000 800 800 600 1000 850 1000 1000

Minimum 600 450 550 400 600 450 300 700

Default 1050 800 850 650 1100 850 550 1350

Maximum 1500 1100 1200 900 1500 1100 1500 1500

Minimum 900 600 825 550 900 600 450 1350

Default 1400 1050 1100 850 1500 1150 700 1500

Maximum 2000 1500 1600 1200 2000 1500 2000 2000

Minimum 1200 900 1100 825 1200 900 600 1350

Default 1750 1300 1400 1050 1875 1450 875 1875

Maximum 2300 1900 2000 1500 2300 1900 2300 2300

Minimum 1500 1100 1375 1000 1500 1100 750 1500

Default 1900 1450 1650 1250 2000 1650 950 2000

Maximum 2300 2200 2000 1800 2300 2200 2300 2300

Minimum 1800 1350 1650 1250 1800 1350 900 1800

Cooling Mode

Stg 1 Stg 2 Stg 1 Stg 2 Stg 1 Stg 2

Dehumid

Mode

Heating Mode

Units Only

Fan

Only

Mode

Aux/

Emerg

Mode

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Description of Operation LED Alarm Relay Normal Mode On Open Normal Mode with UPS Warning On Cycle (closed 5 sec., Open 25 sec.) CXM is non-functional Off Open Fault Retry Slow Flash Open Lockout Fast Flash Closed Over/Under Voltage Shutdown Slow Flash Open (Closed after 15 minutes)

Test Mode - No fault in memory Flashing Code 1 Cycling Code 1 Test Mode - HP Fault in memory Flashing Code 2 Cycling Code 2 Test Mode - LP Fault in memory Flashing Code 3 Cycling Code 3 Test Mode - FP1 Fault in memory Flashing Code 4 Cycling Code 4 Test Mode - FP2 Fault in memory Flashing Code 5 Cycling Code 5 Test Mode - CO Fault in memory Flashing Code 6 Cycling Code 6

Test Mode - Over/Under shutdown in memory

Flashing Code 7 Cycling Code 7

Test Mode - UPS in memory Flashing Code 8 Cycling Code 8 Test Mode - Swapped Thermistor Flashing Code 9 Cycling Code 9

CXM Controls

CXM Control

For detailed control information, see CXM Application, Operation and Maintenance (AOM) manual (part #97B0003N12).

Field Selectable Inputs

Test mode: Test mode allows the service technician to check the operation of the control in a timely manner. By momentarily shorting the test terminals, the CXM control enters a 20 minute test mode period in which all time delays are sped up 15 times. Upon entering test mode, the status LED will ﬂ ash a code representing the last fault. For diagnostic ease at the thermostat, the alarm relay will also cycle during test mode. The alarm relay will cycle on and off similar to the status LED to indicate a code representing the last fault, at the thermostat. Test mode can be exited by shorting the test terminals for 3 seconds. Retry Mode: If the control is attempting a retry of a fault, the status LED will slow ﬂ ash (slow ﬂ ash = one ﬂ ash every 2 seconds) to indicate the control is in the process of retrying.

Field Conﬁ guration Options

Note: In the following ﬁ eld conﬁ guration options, jumper wires should be clipped ONLY when power is removed from the CXM control.

Water coil low temperature limit setting: Jumper 3 (JW3-FP1 Low Temp) provides ﬁ eld selection of temperature limit setting for FP1 of 30°F or 10°F [-1°F or -12°C] (refrigerant temperature).

Not Clipped = 30°F [-1°C]. Clipped = 10°F [-12°C].

Air coil low temperature limit setting: Jumper 2 (JW2-FP2 Low Temp) provides ﬁ eld selection of temperature limit setting for FP2 of 30°F or 10°F [-1°F or -12°C] (refrigerant temperature). Note: This jumper should only be clipped under extenuating circumstances, as recommended by the factory.

Not Clipped = 30°F [-1°C]. Clipped = 10°F [-12°C].

Alarm relay setting: Jumper 1 (JW1-AL2 Dry) provides ﬁ eld selection of the alarm relay terminal AL2 to be jumpered to 24VAC or to be a dry contact (no connection).

Not Clipped = AL2 connected to R. Clipped = AL2 dry contact (no connection).

DIP Switches

Note: In the following ﬁ eld conﬁ guration options, DIP switches should only be changed when power is removed from the CXM control. DIP switch 1: Unit Performance Sentinel Disable - provides ﬁ eld selection to disable the UPS feature.

On = Enabled. Off = Disabled.

DIP switch 2: Stage 2 Selection - provides selection of whether compressor has an “on” delay. If set to stage 2, the compressor will have a 3 second delay before energizing. Also, if set for stage 2, the alarm relay will NOT cycle during test mode.

On = Stage 1. Off = Stage 2

DIP switch 3: Not Used. DIP switch 4: DDC Output at EH2 - provides selection for DDC operation. If set to “DDC Output at EH2,” the EH2 terminal will continuously output the last fault code of the controller. If set to “EH2 normal,” EH2 will operate as standard electric heat output.

On = EH2 Normal. Off = DDC Output at EH2.

NOTE: Some CXM controls only have a 2 position DIP switch package. If this is the case, this option can be selected by clipping the jumper which is in position 4 of SW1.

Jumper not clipped = EH2 Normal. Jumper clipped = DDC Output at EH2.

DIP switch 5: Factory Setting - Normal position is “On.” Do not change selection unless instructed to do so by the factory.

Table 6a: CXM LED And Alarm Relay Operations

-Flash code 2 = 2 quick ﬂ ashes, 10 second pause, 2 quick ﬂ ashes, 10 second pause, etc.

-On pulse 1/3 second; off pulse 1/3 second

Figure 27: Test Mode Pins

Short test pins together to enter Test Mode and speed-up timing and delays for 20 minutes.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

CXM Controls

Safety Features – CXM Control

The safety features below are provided to protect the compressor, heat exchangers, wiring and other components from damage caused by operation outside of design conditions. Anti-short cycle protection: The control features a 5 minute antishort cycle protection for the compressor. Note: The 5 minute anti-short cycle also occurs at power up. Random start: The control features a random start upon power up of 5-80 seconds. Fault Retry: In Fault Retry mode, the Status LED begins slowly ﬂ ashing to signal that the control is trying to recover from a fault input. The control will stage off the outputs and then “try again” to satisfy the thermostat input call. Once the thermostat input call is satisﬁ ed, the control will continue on as if no fault occurred. If 3 consecutive faults occur without satisfying the thermostat input call, the control will go into “lockout” mode. The last fault causing the lockout will be stored in memory and can be viewed by going into test mode. Note: FP1/FP2 faults are factory set at only one try. Lockout: In lockout mode, the status LED will begin fast ﬂ ashing. The compressor relay is turned off immediately. Lockout mode can be “soft” reset by turning off the thermostat (or satisfying the call). A “soft” reset keeps the fault in memory but resets the control. A “hard” reset (disconnecting power to the control) resets the control and erases fault memory. Lockout with emergency heat: While in lockout mode, if W becomes active (CXM), emergency heat mode will occur. High pressure switch: When the high pressure switch opens due to high refrigerant pressures, the compressor relay is de-energized immediately since the high pressure switch is in series with the compressor contactor coil. The high pressure fault recognition is immediate (does not delay for 30 continuous seconds before deenergizing the compressor).

High pressure lockout code = 2

Example: 2 quick ﬂ ashes, 10 sec pause, 2 quick ﬂ ashes, 10 sec. pause, etc. Low pressure switch: The low pressure switch must be open and remain open for 30 continuous seconds during “on” cycle to be recognized as a low pressure fault. If the low pressure switch is open for 30 seconds prior to compressor power up it will be considered a low pressure (loss of charge) fault. The low pr essure switch input is bypassed for the initial 60 seconds of a compressor run cycle.

Low pressure lockout code = 3

Water coil low temperature (FP1): The FP1 thermistor temperature must be below the selected low temperature limit setting for 30 continuous seconds during a compressor run cycle to be recognized as a FP1 fault. The FP1 input is bypassed for the initial 120 seconds of a compressor run cycle. FP1 is set at the factory for one try. Therefore, the control will go into lockout mode once the FP1 fault has occurred.

FP1 lockout code = 4

Air coil low temperature (FP2): The FP2 thermistor temperature must be below the selected low temperature limit setting for 30 continuous

seconds during a compressor run cycle to be recognized as a FP2

fault. The FP2 input is bypassed for the initial 120 seconds of a compressor run cycle. FP2 is set at the factory for one try. Therefore, the control will go into lockout mode once the FP2 fault has occurred.

FP2 lockout code = 5

Condensate overﬂ ow: The condensate overﬂ ow sensor must sense overﬂ ow level for 30 continuous seconds to be recognized as a CO fault. Condensate overﬂ ow will be monitored at all times.

CO lockout code = 6

Over/under voltage shutdown: An over/under voltage condition exists when the control voltage is outside the range of 18VAC to

31.5VAC. Over/under voltage shut down is a self-resetting safety.

If the voltage comes back within range for at least 0.5 seconds, normal operation is restored. This is not considered a fault or lockout. If the CXM is in over/under voltage shutdown for 15 minutes, the alarm relay will close.

Over/under voltage shut down code = 7

Unit Performance Sentinel-UPS (patent pending): The UPS feature indicates when the heat pump is operating inefﬁ ciently. A UPS condition exists when: a) In heating mode with compressor energized, FP2 is greater

than 125°F [52°C] for 30 continuous seconds, or:

b) In cooling mode with compressor energized, FP1 is greater

than 125°F [52°C] for 30 continuous seconds, or:

c) I

n cooling mode with compressor energized, FP2 is less than 40°F [4.5°C] for 30 continuous seconds. If a UPS condition occurs, the control will immediately go to UPS warning. The status LED will remain on as if the control is in normal mode. Outputs of the control, excluding LED and alarm relay, will NOT be affected by UPS. The UPS condition cannot occur during a compressor off cycle. During UPS warning, the alarm relay will cycle on and off. The cycle rate will be “on” for 5 seconds, “off” for 25 seconds, “on” for 5 seconds, “off” for 25 seconds, etc.

UPS warning code = 8

Swapped FP1/FP2 thermistors: During test mode, the control monitors to see if the FP1 and FP2 thermistors are in the appropriate places. If the control is in test mode, the control will lockout, with code 9, after 30 seconds if: a) The compressor is on in the cooling mode and the FP1 sensor

is colder than the FP2 sensor, or:

b) The compressor is on in the heating mode and the FP2 sensor

is colder than the FP1 sensor.

Swapped FP1/FP2 thermistor code = 9.

Diagnostic Features

The LED on the CXM board advises the technician of the current status of the CXM control. The LED can display either the current CXM mode or the last fault in memory if in test mode. If there is no fault in memory, the LED will ﬂ ash Code 1 (when in test mode).

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

CXM Controls

CXM Control Start-up Operation

The control will not operate until all inputs and safety controls are checked for normal conditions. The compressor will have a 5 minute anti-short cycle delay at power-up. The ﬁ rst time after power-up that there is a call for compressor, the compressor will follow a 5 to 80 second random start delay. After the random start delay and anti-short cycle delay, the compressor relay will be energized. On all subsequent compressor calls, the random start delay is omitted.

Table 6b: Unit Operation

TT TS TS

T-stat signal

G Fan only Fan only Fan only

G, Y or Y1 Stage 1 heating

G, Y1, Y2 Stage 2 heating

G, Y1, Y2, W Stage 3 heating

G, W Emergency heat Emergency heat Emergency heat

G, Y or Y1, O Stage 1 cooling

G, Y1, Y2, O Stage 2 cooling

ECM fan ECM fan PSC fan

Stage 1 heating Stage 2 heating Stage 3 heating

Stage 1 cooling Stage 2 cooling

Stage 1 heating Stage 2 heating

N/A

Cooling

N/A

1 Stage 1 = 1st stage compressor, 1st stage fan operation Stage 2 = 2nd stage compressor, 2nd stage fan operation Stage 3 = 2nd stage compressor, auxiliary electric heat, 2nd or 3rd stage fan operation (depending on fan settings) 2 Stage 1 = 1st stage compressor, 1st stage fan operation, reversing valve Stage 2 = 2nd stage compressor, 2nd stage fan operation, reversing valve 3 Stage 1 = compressor, 1st stage fan operation Stage 2 = compressor, 2nd stage fan operation Stage 3 = compressor, auxiliary electric heat, 2nd or 3rd stage fan operation (depending on fan settings) 4 Stage 1 = compressor, 1st stage fan operation, reversing valve Stage 2 = compressor, 2nd stage fan operation, reversing valve 5 Stage 1 = compressor, fan Stage 2 = compressor, auxiliary electric heat, fan 6 Cooling = compressor, fan, reversing valve

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

CXM Controls

Table 7: Nominal resistance at various temperatures

Temp (ºC) Temp (ºF)

-17.8 0.0 85.34 55 131.0 2.99

-17.5 0.5 84.00 56 132.8 2.88

-16.9 1.5 81.38 57 134.6 2.77

-12 10.4 61.70 58 136.4 2.67

-11 12.2 58.40 59 138.2 2.58

-10 14.0 55.30 60 140.0 2.49

-9 15.8 52.38 61 141.8 2.40

-8 17.6 49.64 62 143.6 2.32

-7 19.4 47.05 63 145.4 2.23

-6 21.2 44.61 64 147.2 2.16

-5 23.0 42.32 65 149.0 2.08

-4 24.8 40.15 66 150.8 2.01

-3 26.6 38.11 67 152.6 1.94

-2 28.4 36.18 68 154.4 1.88

-1 30.2 34.37 69 156.2 1.81 0 32.0 32.65 70 158.0 1.75 1 33.8 31.03 71 159.8 1.69 2 35.6 29.50 72 161.6 1.64 3 37.4 28.05 73 163.4 1.58 4 39.2 26.69 74 165.2 1.53 5 41.0 25.39 75 167.0 1.48 6 42.8 24.17 76 168.8 1.43 7 44.6 23.02 77 170.6 1.39 8 46.4 21.92 78 172.4 1.34 9 48.2 20.88 79 174.2 1.30

10 50.0 19.90 80 176.0 1.26 11 51.8 18.97 81 177.8 1.22 12 53.6 18.09 82 179.6 1.18 13 55.4 17.26 83 181.4 1.14 14 57.2 16.46 84 183.2 1.10 15 59.0 15.71 85 185.0 1.07 16 60.8 15.00 86 186.8 1.04 17 62.6 14.32 87 188.6 1.01 18 64.4 13.68 88 190.4 0.97 19 66.2 13.07 89 192.2 0.94 20 68.0 12.49 90 194.0 0.92 21 69.8 11.94 91 195.8 0.89 22 71.6 11.42 92 197.6 0.86 23 73.4 10.92 93 199.4 0.84 24 75.2 10.45 94 201.2 0.81 25 77.0 10.00 95 203.0 0.79 26 78.8 9.57 96 204.8 0.76 27 80.6 9.16 97 206.6 0.74 28 82.4 8.78 98 208.4 0.72 29 84.2 8.41 99 210.2 0.70 30 86.0 8.06 100 212.0 0.68 31 87.8 7.72 101 213.8 0.66 32 89.6 7.40 102 215.6 0.64 33 91.4 7.10 103 217.4 0.62 34 93.2 6.81 104 219.2 0.60 35 95.0 6.53 105 221.0 0.59 36 96.8 6.27 106 222.8 0.57 37 98.6 6.01 107 224.6 0.55 38 100.4 5.77 108 226.4 0.54 39 102.2 5.54 109 228.2 0.52 40 104.0 5.33 110 230.0 0.51 41 105.8 5.12 111 231.8 0.50 42 107.6 4.92 112 233.6 0.48 43 109.4 4.72 113 235.4 0.47 44 111.2 4.54 114 237.2 0.46 45 113.0 4.37 115 239.0 0.44 46 114.8 4.20 116 240.8 0.43 47 116.6 4.04 117 242.6 0.42 48 118.4 3.89 118 244.4 0.41 49 120.2 3.74 119 246.2 0.40 50 122.0 3.60 120 248.0 0.39 51 123.8 3.47 121 249.8 0.38 52 125.6 3.34 122 251.6 0.37 53 127.4 3.22 123 253.4 0.36 54 129.2 3.10

Resistance

(kOhm)

Temp (ºC) Temp (ºF)

Resistance

(kOhm)

CXM Thermostat Details Thermostat Compatibility - Most all heat pump thermostats can be used with the CXM control. However Heat/Cool stats are NOT compatible with the CXM.

Anticipation Leakage Current - Maximum leakage current for

"Y" is 50 mA and for "W" is 20mA. Triacs can be used if leakage current is less than above. Thermostats with anticipators can be used if anticipation current is less than that speciﬁ ed above.

Thermostat Signals -

• "Y" and "W" have a 1 second recognition time when being activated or being removed.

• "O" and "G" are direct pass through signals but are monitored by the micro processor.

• "R" and "C" are from the transformer.

• "AL1" and "AL2" originate from the alarm relay.

• "A" is paralleled with the compressor output for use with well water solenoid valves.

• The "Y" 1/4" quick connect is a connection point to the "Y" input terminal P1 for factory use. This "Y" terminal can be used to drive panel mounted relays such as the loop pump relay.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Unit Commissioning And Operating Conditions

Operating Limits

Environment – Units are designed for indoor installation only. Never install units in areas subject to freezing or where humidity levels could cause cabinet condensation (such as unconditioned spaces subject to 100% outside air). Power Supply – A voltage variation of +/– 10% of nameplate utilization voltage is acceptable.

Determination of operating limits is dependent primarily upon three factors: 1) return air temperature. 2) water temperature, and 3) ambient temperature. When any one of these factors is at minimum or maximum levels, the other two factors should be at normal levels to insure proper unit operation. Extreme variations in temperature and humidity and/or corrosive water or air will adversely affect unit performance, reliability, and service life. Consult Table 8a for operating limits.

Table 8a: Building Operating Limits

Unit

Operating Limits

erating Limits

Air Limits

its

Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC]

bient air, DB 45ºF [7ºC] 39ºF [4ºC]

Rated ambient air, DB 80.6ºF [27ºC] 68ºF [20ºC]

mbient air, DB 80.6ºF [27ºC] 68ºF [20ºC]

Max. ambient air, DB 130ºF [54ºC] 85ºF [29ºC]

bient air, DB 1

Min. entering air, DB/WB 65/45ºF [18/7ºC] 50ºF [10ºC]

ering air, DB/WB 60/45ºF [16/7ºC] 40ºF [4.4ºC] ntering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]

Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]

tering air, DB/WB 100/75ºF [38/24ºC] 80ºF [27ºC]

Max. entering air, DB/WB 100/75ºF [38/24ºC] 80ºF [27ºC]

imits

Water Limits

ering water 30ºF [-1ºC] 20ºF [-6.7ºC]

Min. entering water 20ºF [-6.7ºC] 20ºF [-6.7ºC]

entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC]

Normal entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC]

tering water 120ºF [49ºC] 90ºF [32ºC]

Max. entering water 120ºF [49ºC] 120ºF [49ºC]

Water Flow

Normal Water Flow

Cooling Heating

30ºF [54ºC] 85ºF [29ºC]

70/50ºF Reheat

1.5 to 3.0 gpm / ton

[1.6 to 3.2 l/m per kW]

Commissioning Conditions

Consult Table 8b for the particular model. Starting conditions vary depending upon model and are based upon the following notes:

Notes:

1. Conditions in Table 8b are not normal or continuous operating conditions. Minimum/maximum limits are start-up conditions to bring the building space up to occupancy temperatures. Units are not designed to operate under these conditions on a regular basis.

2. Voltage utilization range complies with AHRI Standard 110.

Table 8b: Building Commissioning Limits

Unit

Commissioning Limits

Air Limits

Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC] Rated ambient air, DB 80.6ºF [27ºC] 68ºF [20ºC] Max. ambient air, DB 130ºF [54ºC] 85ºF [29ºC] Min. entering air, DB/WB 60ºF [16ºC] 40ºF [4.5ºC] Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] Max. entering air, DB/WB 110/83ºF [43/28ºC] 80ºF [27ºC]

Water Limits

Min. entering water 20ºF [-6.7ºC] 20ºF [-6.7ºC] Normal entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] Max. entering water 120ºF [49ºC] 120ºF [49ºC]

Normal Water Flow

Cooling Heating

[1.6 to 3.2 l/m per kW]

1.5 to 3.0 gpm / ton

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Unit Start-Up and Operating Conditions

Unit and System Checkout

BEFORE POWERING SYSTEM, please check the following:

UNIT CHECKOUT

 Balancing/shutoff valves: Insure that all isolation valves are

open and water control valves are wired.

 Line voltage and wiring: Verify that voltage is within an

acceptable range for the unit and wiring and fuses/breakers are properly sized. Verify that low voltage wiring is complete.

 Unit control transformer: Insure that transformer has the

properly selected voltage tap. Residential 208-230V units are factory wired for 230V operation unless speciﬁ ed otherwise.

 Loop/water piping is complete and purged of air. Water/

piping is clean.

 Antifreeze has been added if necessary.  Entering water and air: Insure that entering water and air

temperatures are within operating limits of Table 8.

 Low water temperature cutout: Verify that low water

temperature cut-out on the CXM/CXM control is properly set.

 Unit fan: Manually rotate fan to verify free rotation and insure

that blower wheel is secured to the motor shaft. Be sure to remove any shipping supports if needed. DO NOT oil motors upon start-up. Fan motors are pre-oiled at the factory. Check unit fan speed selection and compare to design requirements.

 Condensate line: Verify that condensate line is open and

properly pitched toward drain.

 HWG pump is disconnected unless piping is completed and

air has been purged from the system.

 Water ﬂ ow balancing: Record inlet and outlet water

temperatures for each heat pump upon startup. This check can eliminate nuisance trip outs and high velocity water ﬂ ow that could erode heat exchangers.

 Unit air coil and ﬁ lters: Insure that ﬁ lter is clean and

accessible. Clean air coil of all manufacturing oils.

 Unit controls: Verify that CXM ﬁ eld selection options are

properly set. Low voltage wiring is complete.

 Blower speed is set.  Service/access panels are in place.

SYSTEM CHECKOUT

 System water temperature: Check water temperature for

proper range and also verify heating and cooling set points for proper operation.

 System pH: Check and adjust water pH if necessary to

maintain a level between 6 and 8.5. Proper pH promotes longevity of hoses and ﬁ ttings (see Table 3).

 System ﬂ ushing: Verify that all air is purged from the system.

Air in the system can cause poor operation or system corrosion. Water used in the system must be potable quality initially and clean of dirt, piping slag, and strong chemical cleaning agents. Some antifreeze solutions may require distilled water.

 Flow Controller pump(s): Verify that the pump(s) is wired,

purged of air, and in operating condition.

 System controls: Verify that system controls function and

operate in the proper sequence.

 Low water temperature cutout: Verify that low water

temperature cut-out controls are set properly (FP1 - JW3).

 Miscellaneous: Note any questionable aspects of

the installation.

 CAUTION! 

CAUTION! Verify that ALL water control valves are open and allow water ﬂ ow prior to engaging the compressor. Freezing of the coax or water lines can permanently damage the heat pump.

 CAUTION! 

CAUTION! To avoid equipment damage, DO NOT leave system ﬁ lled in a building without heat during the winter unless antifreeze is added to the water loop. Heat exchangers never fully drain by themselves and will freeze unless winterized with antifreeze.

Unit Start-up Procedure

1. Turn the thermostat fan position to “ON.” Blower should start.

2. Balance air ﬂ ow at registers.

3. Adjust all valves to their full open position. Turn on the line power to all heat pump units.

4. Room temperature should be within the minimum-maximum ranges of Table 8b. During start-up checks, loop water temperature entering the heat pump should be between 30°F [-1°C] and 95°F [35°C]. Two factors determine the operating limits of water source

5. heat pumps, (a) return air temperature, and (b) water temperature. When any one of these factors is at a minimum or maximum level, the other factor must be at normal level to insure proper unit operation.

a. Adjust the unit thermostat to the warmest setting. Place

the thermostat mode switch in the “COOL” position. Slowly reduce thermostat setting until the compressor activates.

b. Check for cool air delivery at the unit grille within a few

minutes after the unit has begun to operate.

Note: Units have a ﬁ ve minute time delay in the control

circuit that can be bypassed on the CXM/CXM control board as shown below in Figure 27. See controls description for details.

c. Verify that the compressor is on and that the water ﬂ ow

rate is correct by measuring pressure drop through the heat exchanger using the P/T plugs and comparing to Tables 9a through 9b.

d. Check the elevation and cleanliness of the condensate

lines. Dripping may be a sign of a blocked line. Check that the condensate trap is ﬁ lled to provide a water seal.

e. Refer to Table 10. Check the temperature of both entering

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Unit Start-Up Procedure

pressure drop across the heat exchanger versus the data in Tables 9a through 9b. Heat of rejection (HR) can be calculated and compared to catalog data capacity pages. The formula for HR for systems with water is as follows: HR = TD x GPM x 500, where TD is the temperature difference between the entering and leaving water, and GPM is the ﬂ ow rate in U.S. GPM, determined by comparing the pressure drop across the heat exchanger to Tables 9a through 9b.

Check air temperature drop across the air coil when compressor is operating. Air temperature drop should be between 15°F and 25°F [8°C and 14°C].

g. Turn thermostat to “OFF” position. A hissing noise

indicates proper functioning of the reversing valve.

6. Allow ﬁ ve (5) minutes between tests for pressure to equalize before beginning heating test.

a. Adjust the thermostat to the lowest setting. Place the

thermostat mode switch in the “HEAT” position.

b. Slowly raise the thermostat to a higher temperature until

the compressor activates.

c. Check for warm air delivery within a few minutes after the

unit has begun to operate.

d. Refer to Table 10. Check the temperature of both entering

and leaving water. If temperature is within range, proceed with the test. If temperature is outside of the operating range, check refrigerant pressures and compare to Tables 11 through 12. Verify correct water ﬂ ow by comparing unit pressure drop across the heat exchanger versus the data in Tables 9a through 9b. Heat of extraction (HE) can be calculated and compared to submittal data capacity pages. The formula for HE for systems with water is as follows: HE = TD x GPM x 500, where TD is the temperature difference between the entering and leaving water, and GPM is the ﬂ ow rate in U.S. GPM, determined by comparing the pressure drop across the heat exchanger to Tables 9a through 9b.

Check air temperature rise across the air coil when

compressor is operating. Air temperature rise should be between 20°F and 30°F [11°C and 17°C].

f. Check for vibration, noise, and water leaks.

7. If unit fails to operate, perform troubleshooting analysis (see troubleshooting section). If the check described fails to reveal the problem and the unit still does not operate, contact a trained service technician to insure proper diagnosis and repair of the equipment.

8. When testing is complete, set system to maintain desired comfort level.

9. BE CERTAIN TO FILL OUT AND RETURN ALL WARRANTY REGISTRATION PAPERWORK.

WARNING! When the disconnect switch is closed, high voltage is present in some areas of the electrical panel. Exercise caution when working with energized equipment.

CAUTION! Verify that ALL water control valves are open and allow water ﬂ ow prior to engaging the compressor. Freezing of the coax or water lines can permanently damage the heat pump.

 WARNING! 

 CAUTION! 

Note: If performance during any mode appears abnormal, refer to the CXM section or troubleshooting section of this manual. To obtain maximum performance, the air coil should be cleaned before start-up. A 10% solution of dishwasher detergent and water is recommended.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Unit Operating Conditions

Table 9a: HT Coax Water Pressure Drop

Model GPM

2.3

3.0

024

026

3.4

4.5

6.0

3.0

4.5

038

036

6.0

6.8

9.0

4.5

6.0

048

049

6.8

9.0

12.0

6.0

7.5

060

064

9.0

11.3

12.0

15.0

7.0

8.5

070

072

10.5

12.8

14.0

17.0

30°F 50°F 70°F 90°F

0.7

1.1

1.3

2.0

3.1

1.5

2.6

3.8

4.5

6.9

1.5

2.6

3.8

4.5

6.9

0.9

1.7

2.5

3.7

4.1

6.1

1.4

2.2

3.3

4.6

5.4

7.6

Pressure Drop (psi)

0.4

0.7

0.9

1.4

2.3

0.9

1.7

2.7

3.2

5.2

0.6

1.1

1.4

2.5

4.2

0.2

0.9

1.5

2.6

3.0

4.7

0.7

1.3

2.2

3.4

4.1

6.0

0.4

0.6

0.8

1.2

1.9

0.8

1.5

2.3

2.7

4.4

0.5

1.0

1.3

2.3

3.8

0.2

0.7

1.3

2.3

2.6

4.1

0.5

1.1

1.9

3.0

3.6

5.4

0.5

0.7

0.8

1.2

1.8

0.9

1.5

2.2

2.6

4.1

0.3

0.9

1.2

2.2

3.5

0.3

0.8

1.4

2.3

2.6

4.0

0.7

1.2

2.0

2.9

3.5

5.2

Table 10: Water Temperature Change Through Heat Exchanger







Antifreeze Correction Table

Cooling Heating

Antifreeze Type

Water

Propylene Glycol

Methanol

Ethanol

Ethylene Glycol

Antifreeze

Total Cap Sens Cap Power Htg Cap Power

0 1.000 1.000 1.000 1.000 1.000 1.000

5 0.995 0.995 1.003 0.989 0.997 1.070 15 0.986 0.986 1.009 0.968 0.990 1.210 25 0.978 0.978 1.014 0.947 0.983 1.360

5 0.997 0.997 1.002 0.989 0.997 1.070 15 0.990 0.990 1.007 0.968 0.990 1.160 25 0.982 0.982 1.012 0.949 0.984 1.220

5 0.998 0.998 1.002 0.981 0.994 1.140 15 0.994 0.994 1.005 0.944 0.983 1.300 25 0.986 0.986 1.009 0.917 0.974 1.360

5 0.998 0.998 1.002 0.993 0.998 1.040 15 0.994 0.994 1.004 0.980 0.994 1.120 25 0.988 0.988 1.008 0.966 0.990 1.200

EWT 90°F EWT 30°F

WPD

Corr. Fct.

EWT 30°F

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Unit Operating Conditions

Table 11: HT Series Typical Unit Operating Pressures and Temperatures

TE026 Full Load Cooling - without HWG active Full Load Heating - without HWG active

HT024

Entering

Water

Temp

°F

30*

110

Water

Flow

GPM/ton

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

Suction

Pressure

128-138 128-138 128-138

136-146 136-146 136-146

139-149 139-149 139-149

143-153 143-153 143-153

PSIG

Discharge

Pressure

PSIG

186-206 172-192 158-178

281-301 267-287 253-273

368-388 354-374 340-360

465-485 450-470 433-453

*Based on 15% Methanol antifreeze solution

Superheat Subcooling

18-23 18-23 18-23

7-12 7-12 7-12

6-11 6-11 6-11

8-13

6-11 6-11

7-12 5-10

4-9

7-12 5-10 5-10

Water

Temp

Rise

°F

16.3-18.3

12.1-14.1

7.8-9.8

15.7-17.7

11.6-13.6

7.6-9.6

14.9-16.9 11-13

7.2-9.2

13.9-15.9

10.2-12.2

6.5-8.5

Air Temp

Drop °F

19-25 20-26 20-26

19-25 19-25 19-25

18-24 18-24 18-24

17-23 17-23 17-23

Suction

Pressure

PSIG

72-83 75-85 78-88

102-112 106-116 110-120

128-138 134-144 141-151

162-172 166-176 171-181

Discharge

Pressure

PSIG

273-293 275-295 277-297

302-322 303-323 305-325

330-350 332-352 334-354

367-387 372-392 377-397

Superheat Subcooling

6-11 6-11 6-11

8-12 8-12 8-12

10-15 10-15 10-15

14-19 15-20 17-22

3-8 3-8 3-8

6-11 6-11 6-11

8-13 8-13 8-13

10-15 10-15 10-15

Water Temp

Drop

°F

5.9-7.9

4.2-6.2

2.7-4.7

8.9-10.9

6.7-8.7

4.5-6.5

11.3-13.3

8.5-10.5

5.8-7.8

14.4-16.4

10.8-12.8

7.1-9.1

Air

Temp

Rise °F

16-22 17-23 18-24

22-28 23-29 23-29

27-34 28-35 28-35

33-41 34-42 34-42

TE038 Full Load Cooling - without HWG active Full Load Heating - without HWG active

HT036

Entering

Water Temp

°F

30*

110

Water

Flow

GPM/ton

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

Suction

Pressure

PSIG

129-139 128-138 128-138

136-146 135-145 135-145

140-150 140-150 140-150

145-155 145-155 145-155

Discharge

Pressure

PSIG

225-245 211-231 197-217

302-322 283-303 265-285

390-410 369-389 349-369

488-508 467-487 447-467

Superheat Subcooling

15-20 15-20 15-20

9-14 9-14 9-14

7-12 8-13 8-13

10-15

9-14 9-14

13-18 12-17 12-17

13-18

8-13 8-13

13-18

8-13 8-13

Water

Temp

Rise

°F

21.9-23.9

16.1-18.1

10.3-12.3

21.5-23.5

15.8-17.8 10-12

20.5-22.5

14.9-16.9

9.3-11.3 19-21

14-16

9-11

Air Temp

Drop °F

18-24 19-25 19-25

17-23 17-23 17-23

Suction

Pressure

PSIG

69-79 73-83 76-86

96-106 100-110 105-115

123-133 129-139 135-145

157-167 169-179 181-191

Discharge

Pressure

PSIG

293-313 297-317 300-320

322-342 326-346 331-351

352-372 358-378 364-384

390-410 399-419 408-428

Superheat Subcooling

7-12 7-12 7-12

10-15 10-15 10-15

11-16 11-16 11-16

13-18 13-18 14-19

*Based on 15% Methanol antifreeze solution

TE049 Full Load Cooling - without HWG active Full Load Heating - without HWG active

HT048

Entering

Water Temp

°F

30*

110

Water

Flow

GPM/ton

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

Suction

Pressure

PSIG

125-135 123-133 122-132

133-143 132-142 131-141

138-148 137-147 136-146

144-154 143-153 142-152

Discharge

Pressure

PSIG

242-262 224-244 205-225

310-330 290-310 270-290

396-416 374-394 352-372

497-517 472-492 447-467

Superheat Subcooling

13-18 13-18 14-19

8-13 8-13 9-14

7-12 7-12 7-12

10-15

9-14 7-12

8-13 7-12 5-10

7-12 6-11

4-9

5-10

4-9 3-8

Water Temp

Rise

°F

20.9-22.9

15.6-17.6

10.2-12.2

20.5-22.5

15.2-17.2

9.9-11.9

19.2-21.2

14.3-16.3

9.3-11.3 18-20

13.3-15.3

8.5-10.5

Air Temp

Drop °F

19-25 19-25 19-25

18-24 18-24 18-24

17-23 17-23 17-23

Suction

Pressure

PSIG

66-76 69-79 72-82

93-103 98-108

103-113 123-133

130-140 137-147

165-175 175-185 185-195

Discharge

Pressure

PSIG

286-306 289-309 292-312

314-334 320-340 326-346

344-364 354-374 361-381

390-410 401-421 413-433

Superheat Subcooling

7-12 7-12 7-12

8-13 8-13 8-13

9-14 9-14 9-14

13-18 15-20 17-22

*Based on 15% Methanol antifreeze solution

14-19 14-19 14-19

17-22 17-22 17-22

19-24 19-24 19-24

18-23

16.5-21.5 15-20

8-13 9-14 9-14

10-15 10-15 10-15

9-14 9-14 9-14

8-13 8-13 8-13

Water

Temp Drop

°F

8.9-10.9

6.7-8.7

4.5-6.5

12.2-14.2

9.3-11.3

6.4-8.4 15-17

11.6-13.6

8.2-10.2 21-23

15.5-17.5

10.5-12.5

Water Temp

Drop

°F

8-10

6-8 4-6

11.5-13.5

8.7-10.7

5.9-7.9

15-17

11.5-13.5

7.9-9.9

19.6-21.6 15-17

10.3-12.3

Air

Temp

Rise °F

17-23 18-24 19-25

23-29 24-30 24-30

28-35 29-36 30-37

36-44 37-45 39-47

Air

Temp

Rise °F

18-24 19-25 19-25

23-29 24-30 25-31

28-35 29-36 30-37

37-45 38-46 39-47

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Unit Operating Conditions

Table 11: HT Series Typical Unit Operating Pressures and Temperatures: Continued

TE064 Full Load Cooling - without HWG active Full Load Heating - without HWG active

HT060

Entering

Water

Temp

110

30*

Water

Flow

GPM/ton

°F

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

1.5

2.25 3

Suction

Pressure

PSIG

128-138 126-136 125-135

135-145 134-144 133-143

139-149 138-148 138-148

144-154 143-153 142-152

Discharge

Pressure

PSIG

238-258 222-242 205-225

315-335 296-316 276-296

408-428 386-406 364-384

515-535 493-513 469-489

Superheat Subcooling

16-21 21-26 26-31

10-15 12-17 15-20

10-15 10-15 10-15

8-13 8-13 8-13

14-19 13-18 12-17

14-19 13-18

11-16

15-20 13-18

11-16

14-19 13-18 12-17

*Based on 15% Methanol antifreeze solution

HT070

TE072 Full Load Cooling - without HWG active Full Load Heating - without HWG active

Entering

Water Temp

30*

110

Water

Suction

Flow

Pressure

GPM/

°F

ton

1.5

2.25 3

1.5

2.25

1.5

2.25

1.5

2.25

1.5

2.25

131-141 130-140

129-139 135-145

131-141

128-138 139-149

137-147

135-145 145-155

145-155

144-154

PSIG

Discharge

Pressure

PSIG

210-230 205-225 200-220

300-320 295-315 290-310

390-410 370-390 350-370

490-510 470-490 452-472

Superheat Subcooling

10-15 11-16 13-18

10-15 10-15 10-15

10-15 10-15

9-14

12-17 12-17 12-17

15-20 14-19 14-19

16-21 14-19 13-18

*Based on 15% Methanol antifreeze solution

Water Temp

Rise

°F

20.5-22.5

14.9-16.9

9.2-11.2 21-23

15.5-17.5 10-12

20.1-22.1

14.8-16.8

9.5-11.5 19-21

14-16

9-11

Water Temp

Rise

°F

18.5-20.5 14-16

9.5-11.5

17.6-19.6

13.8-15.8 10-12

16.7-18.7

12.6-14.6

8.5-10.5

15.9-17.9

11.7-13.7

7.4-9

Air Temp

Drop °F

21-27 21-27 21-27

22-28 22-28 22-28

21-27 21-27 21-27

20-26 20-26 20-26

Air

Temp

Drop °F

22-28 23-29 24-30

23-29 23-29 23-29

22-28 22-28 22-28

20-27 20-27 20-27

Suction

Pressure

PSIG

66-76 69-79 72-82

90-100 95-105 99-109

115-125 120-130 126-136

157-167 161-171 166-176

Suction

Pressure

PSIG

61-71 65-75 68-78

89-99

98-108

106-116 119-129

132-142 144-154

162-172 172-182 182-192

Discharge

Pressure

PSIG

282-302 285-305 289-309

310-330 313-333 316-336

337-357 341-361 345-365

390-410 394-414 398-418

Discharge

Pressure

PSIG

292-312 296-316 300-320

327-347 337-357 348-368

365-385 380-400 395-415

418-438 430-450 444-464

Superheat Subcooling

10-16 10-16 10-16

11-17 11-17 11-17

12-18 12-18 12-18

15-20 15-20 15-20

9-14 9-14

10-15 12-17

12-17 12-17

14-19 14-19 15-20

Superheat Subcooling

11-16 11-16 10-15

10-15 10-15 10-15

10-15 10-15 11-16

13-18 14-19 15-20

19-24 14-19

9-14

21-26 16-21 11-16

19-24 19-24 19-24

Water Temp

Drop

°F

8-10

6-8 4-6

11.3-13.3

8.5-10.5

5.7-7.7 14-16

10.6-12.6

7.3-9.3

18.2-20.2

13.9-15.9

9.6-11.6

Water

Temp

Drop

°F

7.2-9.2

5.4-7.4

3.5-5.5

10.9-12.9

8.3-10.3

5.7-7.7

14.7-16.7

11.3-13.3

7.9-9.9

19.4-21.4

14.7-16.7

10.1-12.1

Air

Temp

Rise °F

19-25 19-25 20-26

24-30 25-31 26-32

28-35 29-36 30-37

37-45 38-46 39-47

Air

Temp

Rise

°F DB

19-25 20-26 21-27

26-32 28-34 30-36

33-39 36-42 38-44

43-49 45-51 47-53

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Performance Data — HT 024 - Full Load

850 CFM Nominal (ISO Rated) Air ow Cooling, 950 CFM Nominal (ISO Rated) Air ow Heating Performance capacities shown in thousands of Btuh

Cooling - EAT 80/67°F Heating - EAT 70°F

EWT

°F

GPM

3.0 1.1 2.5 730 30.2 20.2 0.95 31.9 33.4 22.7 0.8 3.0 1.1 2.5 820 17.8 1.51 3.5 12.7 90.1 21.6 1.8

3.0 1.1 2.5 850 30.7 21.8 0.98 31.3 34.0 22.7 0.8 3.0 1.1 2.5 950 18.1 1.47 3.6 13.1 87.6 8.7 1.8

4.5 2.0 4.6 730 30.2 20.2 0.88 34.2 33.2 15.1 0.7 4.5 2.0 4.6 820 18.6 1.53 3.6 13.4 91.0 24.1 1.9

4.5 2.0 4.6 850 30.7 21.7 0.92 33.6 33.9 15.1 0.7 4.5 2.0 4.6 950 18.9 1.48 3.7 13.8 88.4 6.1 1.9

6.0 3.1 7.1 730 30.1 20.1 0.86 35.2 33.0 11.2 0.6 6.0 3.1 7.1 820 19.0 1.53 3.6 13.8 91.5 25.4 2.0

6.0 3.1 7.1 850 30.7 21.6 0.89 34.6 33.7 11.2 0.7 6.0 3.1 7.1 950 19.3 1.49 3.8 14.2 88.8 4.7 1.9

3.0 0.9 2.0 730 29.6 20.1 1.04 28.4 33.2 22.5 1.1 3.0 0.9 2.0 820 20.4 1.56 3.8 15.0 93.0 30.0 2.2

3.0 0.9 2.0 850 30.1 21.6 1.08 27.9 33.8 22.5 1.1 3.0 0.9 2.0 950 20.7 1.51 4.0 15.5 90.1 10.3 2.1

4.5 1.6 3.8 730 30.1 20.2 0.97 31.0 33.4 15.1 0.9 4.5 1.6 3.8 820 21.3 1.57 4.0 16.0 94.1 32.9 2.3

4.5 1.6 3.8 850 30.6 21.8 1.00 30.5 34.0 15.1 0.9 4.5 1.6 3.8 950 21.7 1.53 4.2 16.5 91.1 7.3 2.3

6.0 2.6 6.0 730 30.2 20.2 0.93 32.3 33.4 11.3 0.8 6.0 2.6 6.0 820 21.9 1.58 4.0 16.5 94.7 34.5 2.4

6.0 2.6 6.0 850 30.7 21.8 0.97 31.7 34.0 11.3 0.8 6.0 2.6 6.0 950 22.2 1.53 4.2 17.0 91.6 5.7 2.3

3.0 0.7 1.6 730 28.7 19.7 1.15 24.9 32.7 22.2 1.4 3.0 0.7 1.6 820 23.1 1.60 4.2 17.6 96.0 38.3 2.6

3.0 0.7 1.6 850 29.2 21.2 1.20 24.4 33.3 22.2 1.5 3.0 0.7 1.6 950 23.4 1.55 4.4 18.1 92.8 12.1 2.5

4.5 1.4 3.2 730 29.4 20.0 1.07 27.5 33.1 15.0 1.2 4.5 1.4 3.2 820 24.3 1.62 4.4 18.7 97.4 41.7 2.7

4.5 1.4 3.2 850 29.9 21.5 1.11 27.0 33.7 15.0 1.2 4.5 1.4 3.2 950 24.6 1.57 4.6 19.3 94.0 8.6 2.6

6.0 2.3 5.2 730 29.7 20.1 1.03 28.9 33.2 11.3 1.0 6.0 2.3 5.2 820 24.9 1.64 4.5 19.3 98.1 43.6 2.8

6.0 2.3 5.2 850 30.2 21.6 1.07 28.3 33.9 11.3 1.1 6.0 2.3 5.2 950 25.3 1.59 4.7 19.9 94.7 6.6 2.7

3.0 0.7 1.5 730 27.5 19.2 1.28 21.5 31.9 21.7 1.9 3.0 0.7 1.5 820 25.9 1.65 4.6 20.2 99.2 46.5 2.9

3.0 0.7 1.5 850 28.0 20.7 1.33 21.1 32.5 21.7 1.9 3.0 0.7 1.5 950 26.3 1.60 4.8 20.8 95.6 13.9 2.8

4.5 1.3 2.9 730 28.4 19.6 1.19 24.0 32.5 14.7 1.5 4.5 1.3 2.9 820 27.3 1.68 4.8 21.6 100.8 50.4 3.1

4.5 1.3 2.9 850 28.9 21.1 1.23 23.5 33.1 14.7 1.6 4.5 1.3 2.9 950 27.7 1.63 5.0 22.2 97.0 9.9 3.0

6.0 2.0 4.7 730 28.8 19.8 1.14 25.3 32.7 11.1 1.4 6.0 2.0 4.7 820 28.1 1.69 4.9 22.3 101.7 52.6 3.2

6.0 2.0 4.7 850 29.3 21.3 1.18 24.8 33.4 11.1 1.4 6.0 2.0 4.7 950 28.5 1.64 5.1 22.9 97.8 7.6 3.1

3.0 0.6 1.5 730 26.1 18.7 1.42 18.4 31.0 21.1 2.4 3.0 0.6 1.5 820 28.8 1.70 4.9 22.9 102.5 54.7 3.3

3.0 0.6 1.5 850 26.6 20.1 1.47 18.0 31.6 21.1 2.4 3.0 0.6 1.5 950 29.2 1.65 5.2 23.6 98.5 15.7 3.2

4.5 1.2 2.7 730 27.1 19.1 1.32 20.6 31.6 14.3 2.0 4.5 1.2 2.7 820 30.4 1.73 5.1 24.4 104.3 59.1 3.5

4.5 1.2 2.7 850 27.6 20.5 1.37 20.2 32.3 14.3 2.0 4.5 1.2 2.7 950 30.8 1.68 5.4 25.1 100.0 11.2 3.4

6.0 1.9 4.4 730 27.6 19.3 1.27 21.8 32.0 10.9 1.8 6.0 1.9 4.4 820 31.2 1.75 5.2 25.3 105.3 61.6 3.6

6.0 1.9 4.4 850 28.1 20.7 1.31 21.4 32.6 10.9 1.9 6.0 1.9 4.4 950 31.7 1.70 5.5 25.9 100.9 8.6 3.5

3.0 0.7 1.5 730 24.6 18.0 1.58 15.6 30.0 20.4 3.0 3.0 0.7 1.5 820 31.6 1.76 5.3 25.6 105.7 62.9 3.6

3.0 0.7 1.5 850 25.0 19.4 1.64 15.3 30.6 20.4 3.0 3.0 0.7 1.5 950 32.1 1.70 5.5 26.3 101.3 17.5 3.5

4.5 1.2 2.7 730 25.7 18.5 1.47 17.5 30.7 13.9 2.5 4.5 1.2 2.7 820 33.4 1.79 5.5 27.3 107.7 67.9 3.8

4.5 1.2 2.7 850 26.1 19.9 1.52 17.2 31.3 13.9 2.6 4.5 1.2 2.7 950 33.9 1.74 5.7 28.0 103.0 12.4 3.7

6.0 1.8 4.2 730 26.2 18.7 1.41 18.5 31.0 10.6 2.3 6.0 1.8 4.2 820 34.3 1.81 5.6 28.2 108.8 70.6 3.9

6.0 1.8 4.2 850 26.7 20.1 1.46 18.2 31.7 10.6 2.4 6.0 1.8 4.2 950 34.9 1.76 5.8 28.9 104.0 9.6 3.8

3.0 0.7 1.6 730 23.0 17.4 1.76 13.1 29.0 19.8 3.6 3.0 0.7 1.6 820 34.4 1.81 5.6 28.2 108.9 71.2 3.9

3.0 0.7 1.6 850 24.5 19.2 1.70 14.5 30.3 19.8 3.3 3.0 0.7 1.6 950 35.0 1.76 5.8 29.0 104.1 19.3 3.8

4.5 1.2 2.7 730 24.1 17.8 1.64 14.7 29.7 13.5 3.2 4.5 1.2 2.7 820 36.3 1.86 5.7 30.0 111.0 76.7 4.2

4.5 1.2 2.7 850 24.5 19.2 1.70 14.5 30.3 13.5 3.3 4.5 1.2 2.7 950 36.9 1.80 6.0 30.7 105.9 13.7 4.0

6.0 1.8 4.1 730 24.6 18.0 1.58 15.6 30.0 10.2 3.0 6.0 1.8 4.1 820 37.3 1.88 5.8 30.9 112.1 79.7 4.3

6.0 1.8 4.1 850 25.1 19.4 1.63 15.3 30.6 10.2 3.0 6.0 1.8 4.1 950 37.9 1.82 6.1 31.6 106.9 10.5 4.2

3.0 0.7 1.6 730 21.5 16.9 1.95 11.0 28.1 19.2 4.4

3.0 0.7 1.6 850 21.8 18.1 2.02 10.8 28.7 19.2 4.5

4.5 1.2 2.7 730 22.5 17.2 1.82 12.3 28.7 13.0 3.9

100

4.5 1.2 2.7 850 22.9 18.5 1.89 12.1 29.3 13.0 4.0

6.0 1.8 4.1 730 23.0 17.4 1.76 13.1 29.0 9.9 3.7

6.0 1.8 4.1 850 23.4 18.7 1.82 12.8 29.6 9.9 3.7

3.0 0.7 1.5 730 20.0 16.4 2.17 9.2 27.4 18.7 5.3

3.0 0.7 1.5 850 20.3 17.7 2.25 9.0 28.0 18.7 5.4

4.5 1.1 2.6 730 20.9 16.7 2.03 10.3 27.8 12.6 4.7

110

4.5 1.1 2.6 850 21.3 17.9 2.10 10.1 28.5 12.6 4.8

6.0 1.7 4.0 730 21.4 16.8 1.96 10.9 28.1 9.6 4.5

6.0 1.7 4.0 850 21.8 18.1 2.03 10.7 28.7 9.6 4.5

3.0 0.5 1.2 730 18.7 16.2 2.41 7.7 26.9 18.3 6.3

3.0 0.5 1.2 850 19.0 17.4 2.50 7.6 27.5 18.3 6.4

4.5 1.0 2.4 730 19.5 16.3 2.26 8.6 27.2 12.3 5.6

120

4.5 1.0 2.4 850 19.8 17.5 2.34 8.5 27.8 12.3 5.8

6.0 1.7 3.9 730 19.9 16.4 2.18 9.1 27.3 9.3 5.3

Interpolation is permissible; extrapolation is not. Operation below 40°F EWT is based upon a 15% methanol antifreeze solution. All entering air conditions are 80°F DB and 67°F WB in cooling, and 70°F DB in heating. Operation below 60°F EWT requires optional insulated water/refrigerant circuit. AHRI/ISO certi ed conditions are 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating. See performance correction tables for operating conditions other than those listed above. Table does not re ect fan or pump power corrections for AHRI/ISO conditions. For operation in the shaded areas, please see the Performance Data Selection Notes. All performance is based upon the lower voltage of dual voltage rated units.

6.0 1.7 3.9 850 20.2 17.6 2.26 8.9 28.0 9.3 5.5

PSI

WPD

CFM

TC SC kW

Operation not recommended

EER HR LWT HWC

PSI

WPD

CFM

HC kW

Operation not recommended

COP

LAT LWT HWC

GPM

6.0 3.7 8.6 820 16.4 1.49 3.2 11.3 88.5 16.2 1.6

6.0 3.7 8.6 950 16.6 1.44 3.4 11.7 86.2 3.9 1.5

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Performance Data — HT 036 - Full Load

1250 CFM Nominal (ISO Rated) Air ow Cooling, 1250 CFM Nominal (ISO Rated) Air ow Heating Performance capacities shown in thousands of Btuh

Cooling - EAT 80/67°F Heating - EAT 70°F

EWT

°F

GPM

4.5 2.6 6.0 1080 44.8 27.6 1.44 31.1 49.7 22.5 1.1 4.5 2.6 6.0 1080 27.9 2.12 3.9 20.7 93.9 20.8 2.4

4.5 2.6 6.0 1250 45.6 29.7 1.49 30.5 50.6 22.5 1.1 4.5 2.6 6.0 1250 28.3 2.05 4.0 21.3 91.0 9.5 2.4

6.8 4.5 10.5 1080 44.2 27.4 1.39 31.8 48.9 14.8 0.9 6.8 4.5 10.5 1080 29.2 2.14 4.0 21.9 95.1 23.5 2.6

6.8 4.5 10.5 1250 44.9 29.5 1.44 31.2 49.9 14.8 0.9 6.8 4.5 10.5 1250 29.7 2.07 4.2 22.6 92.0 6.7 2.5

9.0 6.9 16.0 1080 43.6 27.3 1.38 31.7 48.3 10.9 0.8 9.0 6.9 16.0 1080 30.0 2.15 4.1 22.6 95.7 25.0 2.7

9.0 6.9 16.0 1250 44.4 29.3 1.43 31.1 49.3 10.9 0.8 9.0 6.9 16.0 1250 30.4 2.08 4.3 23.3 92.5 5.2 2.6

4.5 2.0 4.7 1080 44.7 27.6 1.54 28.9 49.9 22.6 1.4 4.5 2.0 4.7 1080 31.9 2.18 4.3 24.4 97.3 29.1 2.9

4.5 2.0 4.7 1250 45.4 29.6 1.60 28.4 50.9 22.6 1.5 4.5 2.0 4.7 1250 32.4 2.12 4.5 25.2 94.0 11.2 2.9

6.8 3.8 8.7 1080 44.8 27.6 1.46 30.7 49.8 15.0 1.1 6.8 3.8 8.7 1080 33.5 2.22 4.4 25.9 98.7 32.3 3.1

6.8 3.8 8.7 1250 45.6 29.7 1.51 30.1 50.8 15.0 1.2 6.8 3.8 8.7 1250 34.0 2.15 4.6 26.7 95.2 7.9 3.0

9.0 5.9 13.6 1080 44.7 27.6 1.43 31.3 49.6 11.2 1.0 9.0 5.9 13.6 1080 34.4 2.23 4.5 26.7 99.5 34.1 3.2

9.0 5.9 13.6 1250 45.5 29.7 1.48 30.7 50.5 11.2 1.0 9.0 5.9 13.6 1250 34.9 2.16 4.7 27.5 95.8 6.1 3.2

4.5 1.7 3.9 1080 43.7 27.3 1.68 26.0 49.5 22.4 1.9 4.5 1.7 3.9 1080 35.9 2.27 4.6 28.2 100.8 37.5 3.4

4.5 1.7 3.9 1250 44.5 29.3 1.75 25.5 50.4 22.4 2.0 4.5 1.7 3.9 1250 36.5 2.20 4.9 29.0 97.0 12.9 3.3

6.8 3.2 7.5 1080 44.5 27.5 1.57 28.3 49.9 15.1 1.5 6.8 3.2 7.5 1080 37.8 2.31 4.8 29.9 102.4 41.1 3.7

6.8 3.2 7.5 1250 45.3 29.6 1.63 27.7 50.8 15.1 1.6 6.8 3.2 7.5 1250 38.4 2.24 5.0 30.7 98.4 9.1 3.6

9.0 5.2 11.9 1080 44.7 27.6 1.53 29.3 49.9 11.3 1.4 9.0 5.2 11.9 1080 38.8 2.33 4.9 30.8 103.3 43.1 3.8

9.0 5.2 11.9 1250 45.5 29.7 1.58 28.8 50.9 11.3 1.4 9.0 5.2 11.9 1250 39.4 2.26 5.1 31.7 99.2 7.0 3.7

4.5 1.5 3.5 1080 42.2 26.8 1.86 22.7 48.5 22.0 2.6 4.5 1.5 3.5 1080 40.0 2.36 5.0 31.9 104.3 45.8 3.9

4.5 1.5 3.5 1250 42.9 28.8 1.93 22.3 49.5 22.0 2.7 4.5 1.5 3.5 1250 40.6 2.29 5.2 32.8 100.1 14.6 3.8

6.8 2.9 6.7 1080 43.4 27.2 1.73 25.1 49.3 14.9 2.1 6.8 2.9 6.7 1080 42.1 2.42 5.1 33.9 106.1 50.0 4.2

6.8 2.9 6.7 1250 44.1 29.2 1.79 24.7 50.2 14.9 2.1 6.8 2.9 6.7 1250 42.8 2.34 5.4 34.8 101.7 10.3 4.1

9.0 4.7 10.8 1080 43.9 27.3 1.67 26.3 49.6 11.2 1.9 9.0 4.7 10.8 1080 43.3 2.44 5.2 34.9 107.1 52.2 4.3

9.0 4.7 10.8 1250 44.6 29.4 1.73 25.9 50.5 11.2 1.9 9.0 4.7 10.8 1250 43.9 2.37 5.4 35.8 102.5 8.0 4.2

4.5 1.5 3.4 1080 40.2 26.0 2.06 19.5 47.3 21.4 3.4 4.5 1.5 3.4 1080 44.1 2.47 5.2 35.7 107.8 54.1 4.4

4.5 1.5 3.4 1250 40.9 28.0 2.14 19.2 48.2 21.4 3.5 4.5 1.5 3.4 1250 44.8 2.39 5.5 36.6 103.2 16.3 4.3

6.8 2.7 6.3 1080 41.7 26.6 1.91 21.8 48.2 14.6 2.8 6.8 2.7 6.3 1080 46.5 2.53 5.4 37.8 109.8 58.8 4.7

6.8 2.7 6.3 1250 42.4 28.6 1.98 21.4 49.2 14.6 2.9 6.8 2.7 6.3 1250 47.2 2.45 5.6 38.8 104.9 11.5 4.5

9.0 4.4 10.1 1080 42.4 26.8 1.84 23.0 48.6 11.0 2.5 9.0 4.4 10.1 1080 47.8 2.56 5.5 39.0 111.0 61.3 4.8

9.0 4.4 10.1 1250 43.1 28.8 1.91 22.6 49.6 11.0 2.6 9.0 4.4 10.1 1250 48.5 2.48 5.7 40.0 105.9 8.9 4.7

4.5 1.5 3.4 1080 38.0 25.2 2.29 16.6 45.8 20.8 4.3 4.5 1.5 3.4 1080 48.2 2.58 5.5 39.4 111.3 62.5 4.9

4.5 1.5 3.4 1250 38.6 27.1 2.37 16.3 46.7 20.8 4.4 4.5 1.5 3.4 1250 49.0 2.50 5.7 40.4 106.3 18.0 4.7

6.8 2.7 6.2 1080 39.6 25.8 2.13 18.6 46.8 14.2 3.6 6.8 2.7 6.2 1080 50.9 2.65 5.6 41.8 113.6 67.6 5.2

6.8 2.7 6.2 1250 40.3 27.7 2.20 18.3 47.8 14.2 3.7 6.8 2.7 6.2 1250 51.6 2.56 5.9 42.9 108.2 12.7 5.0

9.0 4.2 9.7 1080 40.4 26.1 2.05 19.7 47.4 10.7 3.3 9.0 4.2 9.7 1080 52.3 2.69 5.7 43.1 114.8 70.4 5.3

9.0 4.2 9.7 1250 41.1 28.1 2.12 19.4 48.3 10.7 3.4 9.0 4.2 9.7 1250 53.1 2.60 6.0 44.2 109.3 9.8 5.2

4.5 1.5 3.5 1080 35.6 24.1 2.54 14.0 44.3 20.1 5.3 4.5 1.5 3.5 1080 52.4 2.69 5.7 43.2 114.9 70.8 5.3

4.5 1.5 3.5 1250 37.9 26.7 2.45 15.4 46.2 20.1 4.7 4.5 1.5 3.5 1250 53.2 2.60 6.0 44.3 109.4 19.7 5.2

6.8 2.6 6.1 1080 37.2 24.9 2.37 15.7 45.3 13.7 4.6 6.8 2.6 6.1 1080 55.3 2.76 5.9 45.8 117.4 76.4 5.6

6.8 2.6 6.1 1250 37.9 26.7 2.45 15.4 46.2 13.7 4.7 6.8 2.6 6.1 1250 56.1 2.68 6.1 47.0 111.6 13.9 5.5

9.0 4.1 9.5 1080 38.1 25.2 2.28 16.7 45.9 10.4 4.3 9.0 4.1 9.5 1080 56.8 2.81 5.9 47.3 118.7 79.5 5.8

9.0 4.1 9.5 1250 38.7 27.1 2.36 16.4 46.8 10.4 4.3 9.0 4.1 9.5 1250 57.7 2.72 6.2 48.4 112.7 10.8 5.6

4.5 1.5 3.5 1080 33.2 23.0 2.82 11.8 42.8 19.4 6.5

4.5 1.5 3.5 1250 33.7 24.8 2.92 11.6 43.7 19.4 6.7

6.8 2.6 6.1 1080 34.8 23.8 2.63 13.2 43.7 13.2 5.7

100

6.8 2.6 6.1 1250 35.4 25.6 2.73 13.0 44.7 13.2 5.8

9.0 4.1 9.4 1080 35.6 24.1 2.54 14.0 44.3 10.0 5.3

9.0 4.1 9.4 1250 36.2 26.0 2.63 13.7 45.2 10.0 5.4

4.5 1.4 3.2 1080 30.8 21.9 3.11 9.9 41.5 18.8 7.9

4.5 1.4 3.2 1250 31.4 23.5 3.23 9.7 42.4 18.8 8.0

6.8 2.5 5.9 1080 32.3 22.6 2.92 11.1 42.3 12.8 7.0

110

6.8 2.5 5.9 1250 32.9 24.3 3.03 10.9 43.2 12.8 7.1

9.0 4.0 9.2 1080 33.1 23.0 2.83 11.7 42.7 9.7 6.6

9.0 4.0 9.2 1250 33.7 24.7 2.93 11.5 43.6 9.7 6.7

4.5 1.1 2.6 1080 28.7 20.8 3.43 8.4 40.4 18.4 9.4

4.5 1.1 2.6 1250 29.2 22.3 3.55 8.2 41.4 18.4 9.6

6.8 2.4 5.4 1080 30.0 21.4 3.23 9.3 41.0 12.4 8.4

120

6.8 2.4 5.4 1250 30.5 23.1 3.35 9.1 41.9 12.4 8.6

9.0 3.9 8.9 1080 30.7 21.8 3.13 9.8 41.4 9.4 7.9

9.0 3.9 8.9 1250 31.2 23.4 3.25 9.6 42.3 9.4 8.1

PSI

WPD

CFM

TC SC kW

Operation not recommended

EER HR LWT HWC

PSI

WPD

CFM

HC kW

Operation not recommended

COP

LAT LWT HWC

GPM

9.0 8.3 19.1 1080 25.6 2.09 3.6 18.5 91.9 15.9 2.1

9.0 8.3 19.1 1250 26.0 2.02 3.8 19.1 89.2 4.2 2.1

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Performance Data — HT 048 - Full Load

1550 CFM Nominal (ISO Rated) Air ow Cooling, 1650 CFM Nominal (ISO Rated) Air ow Heating Performance capacities shown in thousands of Btuh

Cooling - EAT 80/67°F Heating - EAT 70°F

EWT

°F

GPM

6.0 1.2 2.8 1330 58.6 39.7 1.89 31.0 65.0 22.1 1.8 6.0 1.2 2.8 1430 35.6 3.03 3.4 25.2 93.0 21.6 3.6

6.0 1.2 2.8 1550 59.6 42.6 1.96 30.4 66.3 22.1 1.8 6.0 1.2 2.8 1650 36.1 2.94 3.6 26.1 90.3 8.7 3.5

9.0 2.7 6.4 1330 58.4 40.7 1.78 32.8 64.5 14.6 1.8 9.0 2.7 6.4 1430 36.9 3.07 3.5 26.5 93.9 24.1 3.6

9.0 2.7 6.4 1550 59.4 43.8 1.85 32.2 65.7 14.6 1.8 9.0 2.7 6.4 1650 37.5 2.98 3.7 27.3 91.0 6.1 3.5

12.0 4.7 10.8 1330 58.0 41.3 1.73 33.5 64.0 10.9 1.8 12.0 4.7 10.8 1430 37.7 3.10 3.6 27.1 94.4 25.5 3.7

12.0 4.7 10.8 1550 59.0 44.4 1.80 32.9 65.2 10.9 1.9 12.0 4.7 10.8 1650 38.3 3.00 3.7 28.1 91.5 4.7 3.6

6.0 1.0 2.3 1330 57.8 38.4 2.06 28.1 64.8 22.0 2.0 6.0 1.0 2.3 1430 40.3 3.17 3.7 29.5 96.1 30.2 3.8

6.0 1.0 2.3 1550 58.8 41.3 2.13 27.6 66.1 22.0 2.0 6.0 1.0 2.3 1650 40.9 3.07 3.9 30.4 93.0 10.1 3.7

9.0 2.4 5.6 1330 58.5 39.3 1.93 30.3 65.1 14.7 1.8 9.0 2.4 5.6 1430 42.1 3.21 3.8 31.2 97.3 33.1 3.9

9.0 2.4 5.6 1550 59.5 42.3 2.00 29.7 66.3 14.7 1.9 9.0 2.4 5.6 1650 42.8 3.11 4.0 32.1 94.0 7.1 3.8

12.0 4.2 9.7 1330 58.6 39.8 1.87 31.3 65.0 11.0 1.8 12.0 4.2 9.7 1430 43.1 3.24 3.9 32.1 97.9 34.7 4.0

12.0 4.2 9.7 1550 59.6 42.8 1.94 30.7 66.2 11.0 1.8 12.0 4.2 9.7 1650 43.8 3.14 4.1 33.1 94.6 5.5 3.9

6.0 0.9 2.0 1330 56.1 37.4 2.25 24.9 63.8 21.7 2.3 6.0 0.9 2.0 1430 45.5 3.30 4.0 34.3 99.5 38.6 4.1

6.0 0.9 2.0 1550 57.1 40.2 2.33 24.4 65.0 21.7 2.4 6.0 0.9 2.0 1650 46.2 3.20 4.2 35.3 95.9 11.8 4.0

9.0 2.2 5.1 1330 57.4 38.1 2.11 27.2 64.6 14.6 2.0 9.0 2.2 5.1 1430 47.8 3.35 4.2 36.4 101.0 41.9 4.3

9.0 2.2 5.1 1550 58.4 41.0 2.18 26.7 65.9 14.6 2.1 9.0 2.2 5.1 1650 48.5 3.25 4.4 37.5 97.2 8.3 4.1

12.0 3.9 9.0 1330 57.9 38.5 2.04 28.4 64.9 11.0 1.9 12.0 3.9 9.0 1430 49.1 3.38 4.3 37.5 101.8 43.7 4.3

12.0 3.9 9.0 1550 58.9 41.4 2.11 27.9 66.1 11.0 2.0 12.0 3.9 9.0 1650 49.8 3.28 4.5 38.7 98.0 6.4 4.2

6.0 0.8 1.9 1330 53.7 36.5 2.48 21.7 62.2 21.1 2.9 6.0 0.8 1.9 1430 51.1 3.43 4.4 39.4 103.1 46.9 4.5

6.0 0.8 1.9 1550 54.7 39.2 2.57 21.3 63.4 21.1 2.9 6.0 0.8 1.9 1650 51.9 3.33 4.6 40.5 99.1 13.5 4.3

9.0 2.0 4.7 1330 55.5 37.1 2.31 24.0 63.4 14.4 2.5 9.0 2.0 4.7 1430 53.8 3.50 4.5 41.9 104.9 50.7 4.7

9.0 2.0 4.7 1550 56.4 39.9 2.40 23.6 64.6 14.4 2.5 9.0 2.0 4.7 1650 54.7 3.39 4.7 43.1 100.7 9.6 4.5

12.0 3.6 8.4 1330 56.3 37.5 2.24 25.2 63.9 10.9 2.3 12.0 3.6 8.4 1430 55.4 3.54 4.6 43.3 105.9 52.8 4.8

12.0 3.6 8.4 1550 57.2 40.3 2.32 24.7 65.1 10.9 2.3 12.0 3.6 8.4 1650 56.2 3.43 4.8 44.5 101.5 7.4 4.6

6.0 0.8 1.8 1330 51.0 35.6 2.73 18.7 60.3 20.5 3.6 6.0 0.8 1.8 1430 56.9 3.57 4.7 44.7 106.8 55.1 4.9

6.0 0.8 1.8 1550 51.8 38.2 2.83 18.3 61.5 20.5 3.7 6.0 0.8 1.8 1650 57.7 3.46 4.9 45.9 102.4 15.3 4.7

9.0 2.0 4.5 1330 52.9 36.2 2.55 20.8 61.6 14.0 3.1 9.0 2.0 4.5 1430 60.0 3.66 4.8 47.6 108.9 59.4 5.1

9.0 2.0 4.5 1550 53.9 38.9 2.64 20.4 62.9 14.0 3.1 9.0 2.0 4.5 1650 61.0 3.54 5.0 48.9 104.2 10.9 5.0

12.0 3.5 8.1 1330 53.9 36.5 2.46 21.9 62.3 10.6 2.8 12.0 3.5 8.1 1430 61.8 3.71 4.9 49.1 110.0 61.8 5.2

12.0 3.5 8.1 1550 54.8 39.3 2.55 21.5 63.5 10.6 2.9 12.0 3.5 8.1 1650 62.7 3.59 5.1 50.5 105.2 8.4 5.1

6.0 0.8 1.8 1330 47.9 34.6 3.02 15.8 58.2 19.8 4.5 6.0 0.8 1.8 1430 62.7 3.73 4.9 50.0 110.6 63.3 5.3

6.0 0.8 1.8 1550 48.7 37.2 3.13 15.5 59.4 19.8 4.5 6.0 0.8 1.8 1650 63.7 3.62 5.2 51.3 105.7 17.1 5.2

9.0 1.9 4.4 1330 50.0 35.3 2.82 17.7 59.6 13.5 3.8 9.0 1.9 4.4 1430 66.2 3.84 5.1 53.1 112.9 68.2 5.6

9.0 1.9 4.4 1550 50.8 37.9 2.92 17.4 60.8 13.5 3.9 9.0 1.9 4.4 1650 67.2 3.72 5.3 54.5 107.7 12.1 5.4

12.0 3.4 7.8 1330 51.0 35.6 2.72 18.7 60.3 10.3 3.6 12.0 3.4 7.8 1430 68.1 3.90 5.1 54.8 114.1 70.9 5.8

12.0 3.4 7.8 1550 51.9 38.3 2.82 18.4 61.5 10.3 3.6 12.0 3.4 7.8 1650 69.2 3.78 5.4 56.3 108.8 9.4 5.6

6.0 0.8 1.9 1330 44.7 33.4 3.36 13.3 56.2 19.1 5.5 6.0 0.8 1.9 1430 68.5 3.91 5.1 55.1 114.3 71.6 5.8

6.0 0.8 1.9 1550 47.6 36.8 3.25 14.6 58.7 19.1 4.9 6.0 0.8 1.9 1650 69.5 3.79 5.4 56.6 109.0 18.9 5.6

9.0 1.9 4.4 1330 46.8 34.2 3.14 14.9 57.5 13.0 4.8 9.0 1.9 4.4 1430 72.2 4.05 5.2 58.4 116.8 77.0 6.2

9.0 1.9 4.4 1550 47.6 36.8 3.25 14.6 58.7 13.0 4.9 9.0 1.9 4.4 1650 73.3 3.92 5.5 60.0 111.2 13.3 6.0

12.0 3.3 7.7 1330 47.9 34.6 3.03 15.8 58.2 9.9 4.5 12.0 3.3 7.7 1430 74.2 4.13 5.3 60.1 118.1 80.0 6.4

12.0 3.3 7.7 1550 48.7 37.2 3.14 15.5 59.4 9.9 4.6 12.0 3.3 7.7 1650 75.4 4.00 5.5 61.7 112.3 10.3 6.2

6.0 0.8 1.9 1330 41.6 32.2 3.75 11.1 54.4 18.5 6.7

6.0 0.8 1.9 1550 42.4 34.6 3.88 10.9 55.6 18.5 6.9

9.0 1.9 4.3 1330 43.6 33.0 3.50 12.5 55.5 12.6 5.9

100

9.0 1.9 4.3 1550 44.3 35.5 3.62 12.2 56.7 12.6 6.1

12.0 3.3 7.6 1330 44.6 33.4 3.38 13.2 56.1 9.6 5.6

12.0 3.3 7.6 1550 45.4 35.9 3.50 13.0 57.3 9.6 5.7

6.0 0.8 1.8 1330 38.8 30.9 4.19 9.2 53.1 18.1 8.2

6.0 0.8 1.8 1550 39.5 33.2 4.35 9.1 54.3 18.1 8.4

9.0 1.8 4.3 1330 40.5 31.7 3.91 10.3 53.8 12.2 7.3

110

9.0 1.8 4.3 1550 41.2 34.1 4.06 10.2 55.0 12.2 7.4

12.0 3.3 7.5 1330 41.4 32.1 3.78 11.0 54.3 9.2 6.8

12.0 3.3 7.5 1550 42.1 34.5 3.92 10.8 55.5 9.2 7.0

6.0 0.7 1.6 1330 36.4 29.6 4.71 7.7 52.5 17.9 9.9

6.0 0.7 1.6 1550 37.0 31.8 4.88 7.6 53.7 17.9 10.1

9.0 1.8 4.1 1330 37.8 30.4 4.39 8.6 52.7 12.0 8.8

120

9.0 1.8 4.1 1550 38.4 32.6 4.55 8.4 53.9 12.0 9.0

12.0 3.2 7.4 1330 38.5 30.8 4.24 9.1 53.0 9.0 8.3

12.0 3.2 7.4 1550 39.2 33.1 4.39 8.9 54.2 9.0 8.5

PSI

WPD

CFM

TC SC kW

Operation not recommended

EER HR LWT HWC

PSI

WPD

CFM

HC kW

Operation not recommended

COP

LAT LWT HWC

GPM

12.0 5.2 12.1 1430 33.0 2.94 3.3 23.0 91.4 16.2 3.4

12.0 5.2 12.1 1650 33.5 2.85 3.4 23.8 88.8 4.0 3.3

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Performance Data — HT 060 - Full Load

1825 CFM Nominal (ISO Rated) Air ow Cooling, 2050 CFM Nominal (ISO Rated) Air ow Heating Performance capacities shown in thousands of Btuh

Cooling - EAT 80/67°F Heating - EAT 70°F

EWT

°F

GPM

7.5 1.7 3.9 1590 75.3 49.7 2.68 28.1 84.4 22.9 1.9 7.5 1.7 3.9 1750 46.9 3.95 3.5 33.4 94.8 21.1 4.1

7.5 1.7 3.9 1850 76.6 53.4 2.78 27.5 86.1 22.9 2.0 7.5 1.7 3.9 2050 47.6 3.82 3.6 34.5 91.5 9.2 4.0

11.3 3.7 8.6 1590 74.9 50.3 2.57 29.1 83.6 15.2 1.8 11.3 3.7 8.6 1750 49.1 3.98 3.6 35.6 96.0 23.7 4.2

11.3 3.7 8.6 1850 76.2 54.0 2.67 28.5 85.3 15.2 1.8 11.3 3.7 8.6 2050 49.9 3.86 3.8 36.7 92.5 6.5 4.1

15.0 6.1 14.1 1590 74.2 50.5 2.53 29.3 82.9 11.3 1.8 15.0 6.1 14.1 1750 50.4 4.00 3.7 36.7 96.7 25.1 4.2

15.0 6.1 14.1 1850 75.5 54.3 2.62 28.8 84.5 11.3 1.8 15.0 6.1 14.1 2050 51.2 3.88 3.9 37.9 93.1 5.1 4.1

7.5 1.2 2.7 1590 74.4 48.8 2.86 26.0 84.2 22.9 2.3 7.5 1.2 2.7 1750 53.9 4.06 3.9 40.0 98.5 29.3 4.4

7.5 1.2 2.7 1850 75.7 52.5 2.97 25.5 85.8 22.9 2.3 7.5 1.2 2.7 2050 54.7 3.94 4.1 41.3 94.7 11.0 4.2

11.3 3.0 7.0 1590 75.2 49.5 2.72 27.6 84.5 15.3 2.0 11.3 3.0 7.0 1750 56.7 4.12 4.0 42.7 100.0 32.4 4.5

11.3 3.0 7.0 1850 76.5 53.2 2.82 27.1 86.1 15.3 2.0 11.3 3.0 7.0 2050 57.6 3.99 4.2 44.0 96.0 7.8 4.4

15.0 5.3 12.2 1590 75.3 49.8 2.66 28.3 84.3 11.5 1.9 15.0 5.3 12.2 1750 58.3 4.15 4.1 44.1 100.8 34.1 4.6

15.0 5.3 12.2 1850 76.6 53.6 2.76 27.8 86.0 11.5 1.9 15.0 5.3 12.2 2050 59.2 4.02 4.3 45.5 96.7 6.1 4.4

7.5 0.9 2.0 1590 72.4 47.8 3.08 23.5 82.9 22.5 2.8 7.5 0.9 2.0 1750 61.1 4.21 4.3 46.8 102.4 37.5 4.7

7.5 0.9 2.0 1850 73.6 51.4 3.20 23.0 84.5 22.5 2.9 7.5 0.9 2.0 2050 62.1 4.08 4.5 48.2 98.0 12.8 4.6

11.3 2.6 6.0 1590 74.0 48.6 2.91 25.4 84.0 15.2 2.4 11.3 2.6 6.0 1750 64.5 4.28 4.4 49.9 104.1 41.1 4.9

11.3 2.6 6.0 1850 75.3 52.2 3.02 25.0 85.6 15.2 2.5 11.3 2.6 6.0 2050 65.5 4.15 4.6 51.3 99.6 9.1 4.7

15.0 4.7 10.8 1590 74.6 48.9 2.83 26.3 84.3 11.5 2.2 15.0 4.7 10.8 1750 66.3 4.32 4.5 51.6 105.1 43.1 5.0

15.0 4.7 10.8 1850 75.9 52.6 2.94 25.9 85.9 11.5 2.3 15.0 4.7 10.8 2050 67.3 4.19 4.7 53.0 100.4 7.1 4.8

7.5 0.7 1.7 1590 69.5 46.7 3.35 20.7 81.0 22.0 3.5 7.5 0.7 1.7 1750 68.5 4.37 4.6 53.6 106.2 45.7 5.1

7.5 0.7 1.7 1850 70.7 50.3 3.47 20.4 82.6 22.0 3.6 7.5 0.7 1.7 2050 69.5 4.24 4.8 55.1 101.4 14.7 5.0

11.3 2.4 5.4 1590 71.7 47.6 3.15 22.8 82.5 15.0 3.0 11.3 2.4 5.4 1750 72.3 4.46 4.7 57.1 108.3 49.9 5.3

11.3 2.4 5.4 1850 73.0 51.1 3.26 22.4 84.1 15.0 3.1 11.3 2.4 5.4 2050 73.4 4.33 5.0 58.6 103.2 10.4 5.2

15.0 4.3 10.0 1590 72.7 48.0 3.05 23.8 83.1 11.3 2.8 15.0 4.3 10.0 1750 74.4 4.52 4.8 59.0 109.4 52.1 5.5

15.0 4.3 10.0 1850 74.0 51.6 3.16 23.4 84.8 11.3 2.8 15.0 4.3 10.0 2050 75.5 4.38 5.1 60.6 104.1 8.1 5.3

7.5 0.7 1.7 1590 66.1 45.5 3.67 18.0 78.7 21.4 4.4 7.5 0.7 1.7 1750 75.8 4.55 4.9 60.3 110.1 53.9 5.6

7.5 0.7 1.7 1850 67.3 48.9 3.81 17.7 80.3 21.4 4.5 7.5 0.7 1.7 2050 77.0 4.41 5.1 61.9 104.8 16.5 5.4

11.3 2.3 5.2 1590 68.6 46.4 3.43 20.0 80.4 14.6 3.8 11.3 2.3 5.2 1750 80.1 4.67 5.0 64.2 112.4 58.6 5.8

11.3 2.3 5.2 1850 69.8 49.9 3.56 19.6 82.0 14.6 3.8 11.3 2.3 5.2 2050 81.3 4.52 5.3 65.9 106.7 11.7 5.7

15.0 4.1 9.5 1590 69.9 46.9 3.32 21.0 81.2 11.0 3.5 15.0 4.1 9.5 1750 82.4 4.73 5.1 66.3 113.6 61.2 6.0

15.0 4.1 9.5 1850 71.1 50.4 3.44 20.6 82.8 11.0 3.5 15.0 4.1 9.5 2050 83.7 4.59 5.3 68.0 107.8 9.1 5.8

7.5 0.8 1.8 1590 62.5 44.1 4.05 15.4 76.3 20.8 5.5 7.5 0.8 1.8 1750 83.1 4.75 5.1 66.9 114.0 62.2 6.1

7.5 0.8 1.8 1850 63.5 47.5 4.19 15.1 77.8 20.8 5.6 7.5 0.8 1.8 2050 84.4 4.61 5.4 68.7 108.1 18.3 5.9

11.3 2.2 5.2 1590 65.1 45.1 3.78 17.2 78.0 14.1 4.7 11.3 2.2 5.2 1750 87.8 4.89 5.3 71.1 116.4 67.4 6.4

11.3 2.2 5.2 1850 66.2 48.5 3.91 16.9 79.6 14.1 4.8 11.3 2.2 5.2 2050 89.1 4.74 5.5 73.0 110.3 13.0 6.2

15.0 4.1 9.4 1590 66.4 45.6 3.65 18.2 78.8 10.7 4.3 15.0 4.1 9.4 1750 90.3 4.97 5.3 73.4 117.8 70.2 6.6

15.0 4.1 9.4 1850 67.5 49.0 3.78 17.9 80.4 10.7 4.4 15.0 4.1 9.4 2050 91.7 4.81 5.6 75.3 111.4 10.0 6.4

7.5 0.8 2.0 1590 58.7 42.6 4.49 13.1 74.0 20.2 6.7 7.5 0.8 2.0 1750 90.3 4.97 5.3 73.3 117.8 70.4 6.6

7.5 0.8 2.0 1850 62.3 47.0 4.33 14.4 77.1 20.2 5.9 7.5 0.8 2.0 2050 91.7 4.81 5.6 75.2 111.4 20.1 6.4

11.3 2.3 5.2 1590 61.3 43.7 4.18 14.7 75.5 13.7 5.8 11.3 2.3 5.2 1750 95.2 5.12 5.4 77.8 120.4 76.2 7.1

11.3 2.3 5.2 1850 62.3 47.0 4.33 14.4 77.1 13.7 5.9 11.3 2.3 5.2 2050 96.7 4.96 5.7 79.7 113.7 14.2 6.9

15.0 4.0 9.3 1590 62.6 44.2 4.03 15.5 76.4 10.4 5.4 15.0 4.0 9.3 1750 97.9 5.21 5.5 80.1 121.8 79.3 7.3

15.0 4.0 9.3 1850 63.7 47.5 4.18 15.2 77.9 10.4 5.5 15.0 4.0 9.3 2050 99.4 5.05 5.8 82.1 114.9 11.0 7.1

7.5 0.9 2.0 1590 55.2 41.1 5.00 11.0 72.3 19.7 8.1

7.5 0.9 2.0 1850 56.2 44.2 5.18 10.8 73.9 19.7 8.3

11.3 2.3 5.2 1590 57.5 42.1 4.65 12.4 73.4 13.3 7.1

100

11.3 2.3 5.2 1850 58.5 45.3 4.82 12.1 75.0 13.3 7.3

15.0 4.0 9.3 1590 58.8 42.6 4.48 13.1 74.1 10.1 6.7

15.0 4.0 9.3 1850 59.8 45.9 4.65 12.9 75.6 10.1 6.8

7.5 0.8 1.8 1590 52.2 39.6 5.60 9.3 71.3 19.4 9.8

7.5 0.8 1.8 1850 53.1 42.6 5.80 9.2 72.9 19.4 10.0

11.3 2.2 5.1 1590 54.1 40.6 5.20 10.4 71.8 13.1 8.7

110

11.3 2.2 5.1 1850 55.0 43.6 5.39 10.2 73.4 13.1 8.8

15.0 4.0 9.2 1590 55.2 41.1 5.01 11.0 72.3 9.8 8.2

15.0 4.0 9.2 1850 56.1 44.2 5.19 10.8 73.8 9.8 8.3

7.5 0.6 1.3 1590 50.0 38.5 6.30 7.9 71.5 19.5 11.7

7.5 0.6 1.3 1850 50.8 41.4 6.53 7.8 73.1 19.5 11.9

11.3 2.0 4.7 1590 51.3 39.2 5.83 8.8 71.2 12.9 10.4

120

11.3 2.0 4.7 1850 52.2 42.1 6.04 8.6 72.8 12.9 10.6

15.0 3.8 8.8 1590 52.1 39.6 5.62 9.3 71.3 9.7 9.8

15.0 3.8 8.8 1850 53.0 42.6 5.82 9.1 72.9 9.7 10.0

PSI

WPD

CFM

TC SC kW

Operation not recommended

EER HR LWT HWC

PSI

WPD

CFM

HC kW

Operation not recommended

COP

LAT LWT HWC

GPM

15.0 7.3 16.8 1750 42.8 3.89 3.2 29.5 92.6 16.1 4.0

15.0 7.3 16.8 2050 43.4 3.77 3.4 30.6 89.6 4.1 3.8

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Performance Data — HT 070 - Full Load

1950 CFM Nominal (Rated) Air ow Cooling, 2100 CFM Nominal (Rated) Air ow Heating P erformance capacities shown in thousands of Btuh

Cooling - EAT 80/67°F Heating - EAT 70°F

EWT

°F

GPM

8.5 2.2 5.1 1590 82.4 50.1 3.04 27.1 92.8 22.2 3.6 8.5 2.2 5.1 1750 51.6 4.77 3.2 35.3 97.3 21.7 5.4

8.5 2.2 5.1 1850 83.8 53.9 3.15 26.6 94.6 22.2 3.7 8.5 2.2 5.1 2050 52.4 4.63 3.3 36.6 93.7 8.6 5.2

12.8 4.6 10.6 1590 82.3 50.0 2.90 28.4 92.2 14.7 3.6 12.8 4.6 10.6 1750 54.0 4.83 3.3 37.5 98.6 24.1 5.5

12.8 4.6 10.6 1850 83.7 53.8 3.00 27.9 93.9 14.7 3.7 12.8 4.6 10.6 2050 54.8 4.68 3.4 38.8 94.8 6.1 5.4

17.0 7.6 17.6 1590 81.9 49.8 2.84 28.9 91.6 11.0 3.6 17.0 7.6 17.6 1750 55.3 4.86 3.3 38.7 99.2 25.4 5.6

17.0 7.6 17.6 1850 83.3 53.5 2.94 28.3 93.3 11.0 3.7 17.0 7.6 17.6 2050 56.1 4.71 3.5 40.1 95.3 4.7 5.5

8.5 1.6 3.8 1590 81.3 49.8 3.27 24.9 92.4 22.2 3.9 8.5 1.6 3.8 1750 59.4 4.96 3.5 42.4 101.4 30.0 5.9

8.5 1.6 3.8 1850 82.7 53.5 3.39 24.4 94.3 22.2 4.0 8.5 1.6 3.8 2050 60.3 4.80 3.7 43.9 97.2 10.3 5.7

12.8 3.9 8.9 1590 82.2 50.1 3.09 26.6 92.8 14.8 3.6 12.8 3.9 8.9 1750 62.1 5.02 3.6 45.0 102.9 32.9 6.1

12.8 3.9 8.9 1850 83.6 53.9 3.21 26.1 94.6 14.8 3.7 12.8 3.9 8.9 2050 63.1 4.87 3.8 46.5 98.5 7.3 5.9

17.0 6.7 15.5 1590 82.4 50.1 3.02 27.3 92.7 11.1 3.6 17.0 6.7 15.5 1750 63.6 5.06 3.7 46.4 103.7 34.5 6.2

17.0 6.7 15.5 1850 83.8 53.9 3.13 26.8 94.5 11.1 3.7 17.0 6.7 15.5 2050 64.6 4.90 3.9 47.9 99.2 5.6 6.1

8.5 1.3 3.0 1590 79.1 49.0 3.54 22.3 91.2 21.9 4.5 8.5 1.3 3.0 1750 66.9 5.14 3.8 49.4 105.4 38.4 6.5

8.5 1.3 3.0 1850 80.5 52.6 3.67 21.9 93.0 21.9 4.6 8.5 1.3 3.0 2050 67.9 4.99 4.0 50.9 100.7 12.0 6.3

12.8 3.4 7.8 1590 80.8 49.6 3.34 24.2 92.2 14.7 4.0 12.8 3.4 7.8 1750 70.1 5.23 3.9 52.3 107.1 41.8 6.8

12.8 3.4 7.8 1850 82.2 53.3 3.46 23.8 94.0 14.7 4.1 12.8 3.4 7.8 2050 71.2 5.07 4.1 53.9 102.1 8.5 6.6

17.0 6.0 13.9 1590 81.5 49.8 3.24 25.1 92.5 11.1 3.8 17.0 6.0 13.9 1750 71.8 5.27 4.0 53.8 108.0 43.7 7.0

17.0 6.0 13.9 1850 82.9 53.6 3.36 24.7 94.3 11.1 3.9 17.0 6.0 13.9 2050 72.9 5.11 4.2 55.5 102.9 6.5 6.8

8.5 1.2 2.7 1590 76.1 47.8 3.87 19.6 89.3 21.4 5.4 8.5 1.2 2.7 1750 74.4 5.34 4.1 56.2 109.4 46.8 7.3

8.5 1.2 2.7 1850 77.4 51.4 4.01 19.3 91.1 21.4 5.6 8.5 1.2 2.7 2050 75.5 5.18 4.3 57.9 104.1 13.6 7.1

12.8 3.1 7.1 1590 78.3 48.7 3.63 21.6 90.7 14.5 4.7 12.8 3.1 7.1 1750 78.0 5.44 4.2 59.4 111.3 50.7 7.7

12.8 3.1 7.1 1850 79.7 52.3 3.76 21.2 92.5 14.5 4.8 12.8 3.1 7.1 2050 79.2 5.28 4.4 61.2 105.8 9.6 7.4

17.0 5.6 13.0 1590 79.3 49.1 3.52 22.6 91.3 11.0 4.4 17.0 5.6 13.0 1750 80.0 5.50 4.3 61.2 112.3 52.8 7.9

17.0 5.6 13.0 1850 80.7 52.7 3.64 22.2 93.1 11.0 4.5 17.0 5.6 13.0 2050 81.2 5.33 4.5 63.0 106.7 7.4 7.7

8.5 1.1 2.6 1590 72.4 46.3 4.26 17.0 87.0 20.9 6.7 8.5 1.1 2.6 1750 81.9 5.56 4.3 62.9 113.3 55.2 8.1

8.5 1.1 2.6 1850 73.7 49.8 4.42 16.7 88.7 20.9 6.8 8.5 1.1 2.6 2050 83.2 5.38 4.5 64.8 107.6 15.2 7.9

12.8 3.0 6.8 1590 75.0 47.4 3.98 18.9 88.6 14.2 5.8 12.8 3.0 6.8 1750 86.0 5.68 4.4 66.6 115.5 59.6 8.6

12.8 3.0 6.8 1850 76.3 50.9 4.12 18.5 90.4 14.2 5.9 12.8 3.0 6.8 2050 87.3 5.50 4.6 68.5 109.4 10.7 8.4

17.0 5.4 12.4 1590 76.3 47.9 3.85 19.8 89.4 10.7 5.4 17.0 5.4 12.4 1750 88.2 5.75 4.5 68.6 116.7 61.9 8.9

17.0 5.4 12.4 1850 77.6 51.5 3.99 19.5 91.2 10.7 5.5 17.0 5.4 12.4 2050 89.5 5.57 4.7 70.5 110.4 8.3 8.7

8.5 1.2 2.7 1590 68.4 44.7 4.72 14.5 84.5 20.3 8.2 8.5 1.2 2.7 1750 89.5 5.79 4.5 69.8 117.4 63.6 9.1

8.5 1.2 2.7 1850 69.5 48.1 4.89 14.2 86.2 20.3 8.4 8.5 1.2 2.7 2050 90.9 5.61 4.7 71.7 111.0 16.9 8.8

12.8 2.9 6.7 1590 71.2 45.8 4.40 16.2 86.2 13.8 7.1 12.8 2.9 6.7 1750 94.1 5.93 4.6 73.9 119.8 68.4 9.8

12.8 2.9 6.7 1850 72.4 49.3 4.56 15.9 88.0 13.8 7.3 12.8 2.9 6.7 2050 95.5 5.75 4.9 75.9 113.2 11.9 9.5

17.0 5.2 12.1 1590 72.6 46.4 4.24 17.1 87.1 10.5 6.6 17.0 5.2 12.1 1750 96.7 6.02 4.7 76.1 121.1 71.0 10.1

17.0 5.2 12.1 1850 73.8 49.9 4.40 16.8 88.8 10.5 6.7 17.0 5.2 12.1 2050 98.1 5.83 4.9 78.2 114.3 9.2 9.8

8.5 1.2 2.8 1590 64.1 43.0 5.26 12.2 82.0 19.7 10.0 8.5 1.2 2.8 1750 97.3 6.04 4.7 76.7 121.5 72.0 10.2

8.5 1.2 2.8 1850 68.1 47.4 5.07 13.4 85.4 19.7 9.0 8.5 1.2 2.8 2050 98.8 5.85 4.9 78.8 114.6 18.5 9.9

12.8 2.9 6.7 1590 67.0 44.1 4.89 13.7 83.6 13.4 8.8 12.8 2.9 6.7 1750 102.6 6.22 4.8 81.3 124.3 77.2 11.0

12.8 2.9 6.7 1850 68.1 47.4 5.07 13.4 85.4 13.4 9.0 12.8 2.9 6.7 2050 104.1 6.03 5.1 83.6 117.0 13.1 10.7

17.0 5.2 12.0 1590 68.4 44.7 4.71 14.5 84.5 10.1 8.2 17.0 5.2 12.0 1750 105.5 6.32 4.9 83.9 125.8 80.1 11.4

17.0 5.2 12.0 1850 69.6 48.1 4.88 14.2 86.3 10.1 8.4 17.0 5.2 12.0 2050 107.1 6.12 5.1 86.2 118.4 10.1 11.1

8.5 1.2 2.8 1590 59.8 41.2 5.88 10.2 79.9 19.2 12.2

8.5 1.2 2.8 1850 60.9 44.3 6.09 10.0 81.6 19.2 12.5

12.8 2.9 6.7 1590 62.6 42.3 5.46 11.5 81.2 13.0 10.8

100

12.8 2.9 6.7 1850 63.7 45.5 5.66 11.2 83.0 13.0 11.0

17.0 5.2 12.0 1590 64.0 42.9 5.27 12.2 82.0 9.9 10.1

17.0 5.2 12.0 1850 65.1 46.2 5.46 11.9 83.8 9.9 10.3

8.5 1.1 2.6 1590 55.7 39.5 6.61 8.4 78.2 18.8 14.7

8.5 1.1 2.6 1850 56.7 42.5 6.85 8.3 80.0 18.8 15.0

12.8 2.9 6.6 1590 58.3 40.6 6.13 9.5 79.2 12.7 13.1

110

12.8 2.9 6.6 1850 59.3 43.6 6.36 9.3 81.0 12.7 13.4

17.0 5.1 11.8 1590 59.6 41.1 5.91 10.1 79.8 9.6 12.3

17.0 5.1 11.8 1850 60.7 44.2 6.12 9.9 81.6 9.6 12.6

8.5 0.9 2.1 1590 52.0 38.1 7.45 7.0 77.4 18.6 17.6

8.5 0.9 2.1 1850 52.9 41.0 7.72 6.8 79.2 18.6 18.0

12.8 2.7 6.2 1590 54.2 39.0 6.91 7.8 77.8 12.5 15.8

120

12.8 2.7 6.2 1850 55.2 41.9 7.16 7.7 79.6 12.5 16.1

17.0 5.0 11.5 1590 55.5 39.4 6.65 8.3 78.2 9.4 14.9

17.0 5.0 11.5 1850 56.4 42.4 6.90 8.2 80.0 9.4 15.2

PSI

WPD

CFM

TC SC kW

Operation not recommended

EER HR LWT HWC

PSI

WPD

CFM

HC kW

Operation not recommended

COP

LAT LWT HWC

GPM

17.0 8.9 20.6 1750 46.6 4.66 2.9 30.7 94.7 16.4 5.2

17.0 8.9 20.6 2050 47.3 4.52 3.1 31.9 91.4 3.8 5.0

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Preventive Maintenance

Water Coil Maintenance

(Direct ground water applications only) - If the system is installed in an area with a known high mineral content (125 P.P.M. or greater) in the water, it is best to establish a periodic maintenance schedule with the owner so the coil can be checked regularly. Consult the well water applications section of this manual for a more detailed water coil material selection. Should periodic coil cleaning be necessary, use standard coil cleaning procedures, which are compatible with the heat exchanger material and copper water lines. Generally, the more water ﬂ owing through the unit, the less chance for scaling. Therefore, 1.5 gpm per ton [2.0 l/m per kW] is recommended as a minimum ﬂ ow. Minimum ﬂ ow rate for entering water temperatures below 50°F [10°C] is 2.0 gpm per ton [2.6 l/m per kW].

Water Coil Maintenance

(All other water loop applications) Generally water coil maintenance is not needed for closed loop systems. However, if the piping is known to have high dirt or debris content, it is best to establish a periodic maintenance schedule with the owner so the water coil can be checked regularly. Dirty installations are typically the result of deterioration of iron or galvanized piping or components in the system. Open cooling towers requiring heavy chemical treatment and mineral buildup through water use can also contribute to higher maintenance. Should periodic coil cleaning be necessary, use standard coil cleaning procedures, which are compatible with both the heat exchanger material and copper water lines. Generally, the more water ﬂ owing through the unit, the less chance for scaling. However, ﬂ ow rates over 3 gpm per ton (3.9 l/m per kW) can produce water (or debris) velocities that can erode the heat exchanger wall and ultimately produce leaks.

Hot Water Generator Coils

See water coil maintenance for ground water units. If the potable water is hard or not chemically softened, the high temperatures of the desuperheater will tend to scale even quicker than the water coil and may need more frequent inspections. In areas with extremely hard water, a HWG is not recommended.

months to minimize the problem. The condensate pan may also need to be cleaned periodically to insure indoor air quality. The condensate drain can pick up lint and dirt, especially with dirty ﬁ lters. Inspect the drain twice a year to avoid the possibility of plugging and eventual overﬂ ow.

Compressor

Conduct annual amperage checks to insure that amp draw is no more than 10% greater than indicated on the serial plate data.

Fan Motors

All units have lubricated fan motors. Fan motors should never be lubricated unless obvious, dry operation is suspected. Periodic maintenance oiling is not recommended, as it will result in dirt accumulating in the excess oil and cause eventual motor failure. Conduct annual dry operation check and amperage check to insure amp draw is no more than 10% greater than indicated on serial plate data.

Air Coil

The air coil must be cleaned to obtain maximum performance. Check once a year under normal operating conditions and, if dirty, brush or vacuum clean. Care must be taken not to damage the aluminum ﬁ ns while cleaning. CAUTION: Fin edges are sharp.

Cabinet

Do not allow water to stay in contact with the cabinet for long periods of time to prevent corrosion of the cabinet sheet metal. Generally, vertical cabinets are set up from the ﬂ oor a few inches [7 - 8 cm] to prevent water from entering the cabinet. The cabinet can be cleaned using a mild detergent.

Refrigerant System

To maintain sealed circuit integrity, do not install service gauges unless unit operation appears abnormal. Reference the operating charts for pressures and temperatures. Verify that air and water ﬂ ow rates are at proper levels before servicing the refrigerant circuit.

Filters

Filters must be clean to obtain maximum performance. Filters should be inspected every month under normal operating conditions and be replaced when necessary. Units should never be operated without a ﬁ lter.

Washable, high efﬁ ciency, electrostatic ﬁ lters, when dirty, can exhibit a very high pressure drop for the fan motor and reduce air ﬂ ow, resulting in poor performance. It is especially important to provide consistent washing of these ﬁ lters (in the opposite direction of the normal air ﬂ ow) once per month using a high pressure wash similar to those found at self-serve car washes.

Condensate Drain

In areas where airborne bacteria may produce a “slimy” substance in the drain pan, it may be necessary to treat the drain pan chemically with an algaecide approximately every three

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Troubleshooting

General

If operational difﬁ culties are encountered, perform the preliminary checks below before referring to the troubleshooting charts.

• Verify that the unit is receiving electrical supply power.

• Make sure the fuses in the fused disconnect switches are intact.

After completing the preliminary checks described above, inspect for other obvious problems such as leaking connections, broken or disconnected wires, etc. If everything appears to be in order, but the unit still fails to operate properly, refer to the “CXM Troubleshooting Process Flowchart” or “Functional Troubleshooting Chart.”

CXM Board

CXM board troubleshooting in general is best summarized as simply verifying inputs and outputs. After inputs and outputs have been veriﬁ ed, board operation is conﬁ rmed and the problem must be elsewhere. Below are some general guidelines for troubleshooting the CXM control.

Field Inputs

All inputs are 24VAC from the thermostat and can be veriﬁ ed using a volt meter between C and Y, G, O, W. 24VAC will be present at the terminal (for example, between “Y” and “C”) if the thermostat is sending an input to the CXM board.

Sensor Inputs

All sensor inputs are ‘paired wires’ connecting each component to the board. Therefore, continuity on pressure switches, for example can be checked at the board connector.

CXM Troubleshooting Process Flowchart/Functional Troubleshooting Chart

The “CXM Functional Troubleshooting Process Flowchart” is a quick overview of how to start diagnosing a suspected problem, using the fault recognition features of the CXM board. The “Functional Troubleshooting Chart” on the following page is a more comprehensive method for identifying a number of malfunctions that may occur, and is not limited to just the CXM controls. Within the chart are ﬁ ve columns:

• The “Fault” column describes the symptoms.

• Columns 2 and 3 identify in which mode the fault is likey to occur, heating or cooling.

• The “Possible Cause column” identiﬁ es the most likely sources of the problem.

• The “Solution” column describes what should be done to correct the problem.

 WARNING! 

WARNING! HAZARDOUS VOLTAGE! DISCONNECT

ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING. Failure to disconnect power before servicing can cause severe personal injury or death.

The thermistor resistance should be measured with the connector removed so that only the impedance of the thermistor is measured. If desired, this reading can be compared to the thermistor resistance chart shown in the CXM AOM manual. An ice bath can be used to check calibration of the thermistor.

Outputs

The compressor relay is 24VAC and can be veriﬁ ed using a voltmeter. The fan signal is passed through the board to the external fan relay (units with PSC motors only). The alarm relay can either be 24VAC as shipped or dry contacts for use with DDC controls by clipping the JW1 jumper. Electric heat outputs are 24VDC “ground sinking” and require a volt meter set for DC to verify operation. The terminal marked “24VDC” is the 24VDC supply to the electric heat board; terminal “EH1” is stage 1 electric heat; terminal “EH2” is stage 2 electric heat. When electric heat is energized (thermostat is sending a “W” input to the CXM controller), there will be 24VDC between terminal “24VDC” and “EH1” (stage 1 electric heat) and/or “EH2” (stage 2 electric heat). A reading of 0VDC between “24VDC” and “EH1” or “EH2” will indicate that the CXM board is NOT sending an output signal to the electric heat board.

Test Mode

Test mode can be entered for 20 minutes by shorting the test pins. The CXM board will automatically exit test mode after 20 minutes.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

See “Does

not Operate

in Clg”

See “Only

Comp

Runs”

Start

Did Unit

Attempt to

Start?

Did Unit

Lockout at

Start-up?

Unit Short

Cycles?

Only Fan

Runs?

Only

Compressor

Runs?

Did unit lockout

after a period of

operation?

Does unit

operate in

cooling?

Unit is OK!

‘See Performance

Troubleshooting’ for

further help

Check Main

power (see power

problems)

Check fault LED code

on control board

Yes

See HP

Fault

See

LP/LOC

Fault

See FP1

Fault

See FP2

Fault

See

Condensate

Fault

See Over/

Under

Voltage

No fault

shown

Replace

CXM

See “Unit

short

cycles”

See “Only

Fan Runs”

Yes

CXM Functional Troubleshooting Flow Chart

CXM Process Flow Chart

 WARNING! 

WARNING! HAZARDOUS VOLTAGE! DISCONNECT

ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING. Failure to disconnect power before servicing can cause severe personal injury or death.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Functional Troubleshooting

Fault Htg Clg Possible Cause Solution

Check line voltage circuit breaker and disconnect.

Main power problems

HP Fault Code 2

High Pressure

LP/LOC Fault Code 3

Low Pressure / Loss of Charge

LT1 Fault Code 4

Water coil low temperature limit

LT2 Fault Code 5

Air coil low temperature limit

Condensate Fault Code 6

Over/Under Voltage Code 7

(Auto resetting)

Unit Performance Sentinel Code 8

No Fault Code Shown

Unit Short Cycles

Only Fan Runs

Only Compressor Runs

Unit Doesn’t Operate in Cooling

XXGreen Status LED Off

X Reduced or no water ﬂ ow in cooling X Water Temperature out of range in cooling Bring water temp within design parameters.

X Reduced or no air ﬂ ow in heating

X Air temperature out of range in heating Bring return air temp within design parameters. XXOvercharged with refrigerant Check superheat/subcooling vs typical operating condition table. XXBad HP Switch Check switch continuity and operation. Replace. XXInsufﬁ cient charge Check for refrigerant leaks

X Compressor pump down at start-up Check charge and start-up water ﬂ ow.

X Reduced or no water ﬂ ow in heating

X Inadequate antifreeze level Check antifreeze density with hydrometer.

Improper temperature limit setting (30°F vs

10°F [-1°C vs -2°C])

X Water Temperature out of range Bring water temp within design parameters. XXBad thermistor Check temp and impedance correlation per chart

X Reduced or no air ﬂ ow in cooling

X Air Temperature out of range Too much cold vent air? Bring entering air temp within design parameters.

Improper temperature limit setting (30°F vs

10°F [-1°C vs -12°C])

XXBad thermistor Check temp and impedance correlation per chart. XXBlocked drain Check for blockage and clean drain. XXImproper trap Check trap dimensions and location ahead of vent.

X Poor drainage

X Moisture on sensor Check for moisture shorting to air coil.

XXPlugged air ﬁ lter Replace air ﬁ lter .

xXRestricted Return Air Flow Find and eliminate restriction. Increase return duct and/or grille size.

XXUnder Voltage

XXOver Voltage X Heating mode FP2>125°F [52°C] Check for poor air ﬂ ow or overcharged unit.

Cooling Mode FP1>125°F [52°C] OR FP2<

40ºF [4ºC])

XXNo compressor operation See "Only Fan Operates". XXCompressor overload Check and replace if necessary. XXControl board Reset power and check operation. XXDirty air ﬁ lter Check and clean air ﬁ lter. XXUnit in "test mode" Reset power or wait 20 minutes for auto exit. XXUnit selection Unit may be oversized for space. Check sizing for actual load of space. XXCompressor overload Check and replace if necessary XXThermostat position Ensure thermostat set for heating or cooling operation. XXUnit locked out Check for lockout codes. Reset power. XXCompressor Overload Check compressor overload. Replace if necessary.

XXThermostat wiring

XXThermostat wiring Check G wiring at heat pump. Jumper G and R for fan operation XX

Fan motor relay

XX Check fan power enable relay operation (if present). XXFan motor Check for line voltage at motor. Check capacitor.

XXThermostat wiring

X Reversing valve

X Thermostat setup Check for ‘O’ RV setup not ‘B’. X Thermostat wiring Check O wiring at heat pump. Jumper O and R for RV coil ‘click’.

X Thermostat wiring

Check for line voltage between L1 and L2 on the contactor. Check for 24VAC between R and C on CXM/DXM' Check primary/secondary voltage on transformer. Check pump operation or valve operation/setting. Check water ﬂ ow adjust to proper ﬂ ow rate.

Check for dirty air ﬁ lter and clean or replace. Check fan motor operation and airﬂ ow restrictions. Dirty Air Coil- construction dust etc. Too high of external static. Check static vs blower table.

Check pump operation or water valve operation/setting. Plugged strainer or ﬁ lter. Clean or replace.. Check water ﬂ ow adjust to proper ﬂ ow rate.

Clip JW3 jumper for antifreeze (10°F [-12°C]) use.

Check for dirty air ﬁ lter and clean or replace. Check fan motor operation and airﬂ ow restrictions. Too high of external static. Check static vs blower table.

Normal airside applications will require 30°F [-1°C] only.

Check for piping slope away from unit. Check slope of unit toward outlet. Poor venting. Check vent location.

Check power supply and 24VAC voltage before and during operation. Check power supply wire size. Check compressor starting. Need hard start kit? Check 24VAC and unit transformer tap for correct power supply voltage. Check power supply voltage and 24VAC before and during operation. Check 24VAC and unit transformer tap for correct power supply voltage.

Check for poor water ﬂ ow, or air ﬂ ow.

Check thermostat wiring at heat pump. Jumper Y and R for compressor operation in test mode.

Jumper G and R for fan operation. Check for Line voltage across BR contacts.

Check thermostat wiring at heat pump. Jumper Y and R for compressor operation in test mode

Set for cooling demand and check 24VAC on RV coil and at CXM/DXM board. If RV is stuck, run high pressure up by reducing water ﬂ ow and while operating

engage and disengage RV coil voltage to push valve.

Put thermostat in cooling mode. Check 24 VAC on O (check between C and O); check for 24 VAC on W (check between W and C). There should be voltage on O, but not on W. If voltage is present on W, thermostat may be bad or wired incorrectly.

Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.

Performance Troubleshooting

Performance Troubleshooting Htg Clg Possible Cause Solution

XXDirty ﬁ lter Replace or clean.

Check for dirty air ﬁ lter and clean or replace.

Insufﬁ cient capacity/ Not cooling or heating

High Head Pressure

Low Suction Pressure

Low Discharge Air Temperature in Heating

High humidity

X Reduced or no air ﬂ ow in heating

X Reduced or no air ﬂ ow in cooling

XXLeaky duct work XXLow refrigerant charge Check superheat and subcooling per chart.

XXRestricted metering device Check superheat and subcooling per chart. Replace.

X Defective reversing valve Perform RV touch test. XXThermostat improperly located Check location and for air drafts behind stat. XXUnit undersized Recheck loads & sizing. Check sensible clg. load and heat pump capacity. XXScaling in water heat exchanger Perform scaling check and clean if necessary. XXInlet water too hot or too cold Check load, loop sizing, loop backﬁ ll, ground moisture.

X Reduced or no air ﬂ ow in heating

X Reduced or no water ﬂ ow in cooling

X Inlet water too hot Check load, loop sizing, loop backﬁ ll, ground moisture. X Air temperature out of range in heating Bring return air temperature within design parameters.

X Scaling in water heat exchanger Perform scaling check and clean if necessary. XXUnit overcharged Check superheat and subcooling. Re-weigh in charge. XXNon-condensables in system Vacuum system and re-weigh in charge. XXRestricted metering device. Check superheat and subcooling per chart. Replace.

X Reduced water ﬂ ow in heating.

X Water temperature out of range. Bring water temperature within design parameters.

X Reduced air ﬂ ow in cooling.

X Air temperature out of range Too much cold vent air? Bring entering air temperature within design parameters. XXInsufﬁ cient charge Check for refrigerant leaks. X Too high of air ﬂ ow Check fan motor speed selection and air ﬂ ow chart. X Poor performance See ‘Insufﬁ cient Capacity’

X Too high of air ﬂ ow Check fan motor speed selection and airﬂ ow chart.

X Unit oversized Recheck loads & sizing. Check sensible clg load and heat pump capacity.

Check fan motor operation and airﬂ ow restrictions. Too high of external static. Check static vs. blower table. Check for dirty air ﬁ lter and clean or replace. Check fan motor operation and airﬂ ow restrictions. Too high of external static. Check static vs. blower table. Check supply and return air temperatures at the unit and at distant duct registers

if signiﬁ cantly different, duct leaks are present.

Check for dirty air ﬁ lter and clean or replace. Check fan motor operation and air ﬂ ow restrictions. Too high of external static. Check static vs. blower table. Check pump operation or valve operation/setting. Check water ﬂ ow. Adjust to proper ﬂ ow rate.

Check pump operation or water valve operation/setting. Plugged strainer or ﬁ lter. Clean or replace. Check water ﬂ ow. Adjust to proper ﬂ ow rate.

Check for dirty air ﬁ lter and clean or replace. Check fan motor operation and air ﬂ ow restrictions. Too high of external static. Check static vs. blower table.

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Troubleshooting Form

Note: Never connect refrigerant gauges during startup procedures. Conduct water-side analysis using P/T ports to determine water ﬂ ow and temperature difference. If water-side analysis shows poor performance, refrigerant troubleshooting may be required. Connect refrigerant gauges as a last resort.

01-2013

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Heat Controller HTH, HTD, HTV User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual