HTS HRP 30 C 2 Product manual

SEPT 2001 INSTALLATION AND MAINTENANCE
For Parts and Service Call:
HTS Engineering Ltd.
115 Norfinch Drive, North York Ontario
Tel: [phone]
Fax: [phone]
Visit us on the web at w
ww
www.htseng.com
SEPT 2001 I&M 1.0

Model Nomenclature
HRP = High Rise Heat Pump - Vertical WSHP Chassis
HRP 30 C 2
Unit Size Cfm
30 420
40 478
60 602
80 807
Note: Installation and maintenance are to be performed only by qualified personnel who are
familiar with local code and regulations, and are experienced with the type of equipment.
Transportation and Storage
Upon receipt of the equipment, check cartons and pallets for visible damage. Note any
such damage on the shipper's delivery ticket before signing it. If there is any evidence of rough
handling, immediately open the cartons to check for concealed damage. If any damage is found,
notify the carrier within 48 hours to establish your claim and request their inspection and report.
Our Warranty Claims Department should then be contacted.
All cartons are marked with "UP" arrows and should be transported and stored in their
upright position. If it is necessary to place air conditioning units in other than their upright position
for on-site transfer, the units must be placed in their normal upright position for at least 24 hours
before attempting to start them.
Temporary storage at the job site must be indoors, completely sheltered from rain, snow,
etc. High or low temperatures naturally associated with weather patterns will not harm the
conditioners. Excessively high temperatures [140°F (60°C)] may deteriorate certain plastics and
cause permanent damage.
Design
Vintage
Voltage
2= 208/60/1
Unit Size

Installation
General
1. To prevent damage this equipment should not be operated for supplementary heating and
cooling during the construction period.
2. Inspect the cartons and pallets for any specific tagging numbers indicated by HTS Engineering
per a request from the installing contractor. At this time the voltage, phase and capacity should
be checked against the plans.
3. Check tagging numbers against the plans to ensure unit installation in the correct location.
4. The installing contractor will find it beneficial to confer with piping, sheet metal, ceiling and
electrical foremen, together, before installing any conditioners.
Chassis
It is recommended that a piece of rubber or neoprene pad material, 112" (13mm)
maximum thickness, be placed under the unit cabinet.
Remove chassis from its carton. Remove compressor hold-down bolts from bottom of
chassis.
Connect electrical quick connect plug to matching receptacle on the cabinet mounted
control box.
Slide the chassis into the cabinet until the outside flanges are flush with the front. Install the
coil blockoff panel
Return Air Door
Screw architectural acoustical front panel to the dry wall furring as per detail in shop drawings.

1. Prior to first operation of any HRP unit, the water circulating system must be cleaned and flushed of all
construction dirt and debris. The chassis cannot be connected to system when flushing is being
conducted. Supply and return pipes must be interconnected with factory supplied hoses to properly
flush system. This will prevent the introduction of dirt into the chasis.
2. Fill system at city water makeup connection with all air vents open. After filling close all air vents
assure that boiler and heat rejector are off but flow is allowed through each. The installer/contractor
should start main circulating pump with pressure reducing makeup valve open. Check vents in sequence
to bleed off any trapped air, assuring circulation through all components of the system.
3. Shut off circulating pump and open all drains and vents to completely drain the system. Short circuited
supply and return runouts should now be connected to the HRP unit with factory supplied supply and
return hoses. Teflon tape is recommended over pipe dope for pipe thread connections. Use no sealers at
the swivel flare connections of hoses.
4. Trisodium phosphate is recommended as a cleaning agent during flushing. However, many localities
prohibit the introduction of phosphates into their sewage systems. The current recommendation is to
contact your local water treatment specialist.
5. Refill the system with clean water. Test with litmus paper for acidity, and treat as required to leave the
water slightly alkaline (pH 7.5 to 8.5). The specified percentage of antifreeze may also be added at this
time. Use commercial grade antifreeze designed for HVAC systems only. Do not use automotive grade
antifreeze.
6. Installing contractor to provide written confirmation that the system was properly flushed and balanced.
An independent flushing & balancing agency must be used. Once this is complete a proper start can be
completed by HRP start-up contractor.
7. Set the system heat add setpoint to 70°F (27°C) and the heat rejection setpoint to 85°F (29°C). Supply
power to all motors and start the circulating pumps. After full flow has been established through all
components including the heat rejector (regardless of season) and air vented and loop temperatures
stabilized, each of the HRP units will be ready for check, test and start-up and for air and water
balancing.
8. FAILURE TO PERFORM ANY OF THE ABOVE STEPS WILL RESULT IN
TERMINATION OF MANUFACTURES WARRANTY.
System Description
This decentralized, year round heating and cooling system consists of a two pipe closed loop
water circuit, through which non-refrigerated water is circulated continuously throughout the
building. Locating the piping within the building negates the need for piping insulation. A
supplemental central heat source adding heat to the loop at the lower end of the range and
heat rejecter equipment capable of removing heat at the high end of the range maintains the
loop water temperature throughout the year in an approximate range of 65oto 95oF (18oC to
35oC). Filled with water(usually 30% EG), this circuit provides both a sink and a source of
energy. These systems achieve energy conservation by pumping heat from warm to cold
spaces whenever they coexist anywhere within the building.
General Design Steps
START UP : FLUSHING THE SYSTEM
In moderate weather, units serving the shady side of a building are often heating while those
serving the sunny are in cooling mode. When approximately one-third of the units in operation
are cooling, they add sufficient heat to the water loop so that neither addition to nor rejection of
heat from the water is required.

1. Open all valves to full open position and turn on power to the conditioner.
2. Set thermostat for FAN ONLY operation by selecting OFF at the system switch and ON at the fan
switch. If AUTO fan operation were selected, the fan would cycle with the compressor. Check for proper
air delivery.
3. Set thermostat to COOL. If the thermostat is an automatic changeover type, simply set the cooling
temperature to the coolest position. On manual changeover types additionally select COOL at the system
switch. Again, many conditioners have time delays which protect the compressor against short cycling.
After a few minutes of operation, check the discharge grilles for cool air delivery. Measure the temperature
difference between entering and leaving water. It should be approximately 1 1/2 times greater than the
heating mode temperature difference. For example, if the cooling temperature difference is 15 degrees, the
heating temperature difference should have been at ten degrees. Without automatic flow control valves,
target a cooling temperature difference of 10° to 14°F (5° to 8°C). Adjust the combination shutoff/balancing
valve in the return line to a water flow rate which will result in the 10° to 14° (5° to 8°C) difference.
4. Set thermostat to HEAT. If thermostat is the automatic changeover type, set system switch to the
AUTO position and depress the heat setting to the warmest selection. Some conditioners have built-in time
delays which prevent the compressor from immediately starting. With most control schemes, the fan will
start immediately. After a few minutes of compressor operation, check for warm air delivery at discharge
grille. If this is a "cold building" start-up, leave unit running until return air to the unit is at least 65°F
(18°C). Measure the temperature difference between entering and leaving air and entering and leaving
water. With entering water of 60° to 80°F (16° to 27°C), leaving water should be 6° to 12°F (3.3° to 6.6°C)
cooler, and the air temperature rise through the machine should not exceed 35°F (19°C). If the air
temperature rise exceeds 35°F (19°C), then the water flow rate is probably inadequate. If the water
temperature difference is less than 6 degrees, the water flow rate is excessive. If the water temperature
difference exceeds 12°F (6.6°C), then the water flow rate is inadequate.
5. Check the elevation and cleanliness of the condensate line. If the air is too dry for sufficient
dehumidification, slowly pour enough water into the condensate pan to ensure proper drainage.
6. If the conditioner does not operate, check the following points:
a. Is supply voltage to the machine compatible?
b. Is thermostat type appropriate?
c. Is thermostat wiring correct?
START UP : AFTER FLUSHING

16 18.5
14
S R
C
P
5
60
14
Supply Air Openings
1/2" Flange
40 582-96 *
Themostat Junction Box
8" - HRP 30 10"- HRP 40
Optional 5" legs
36
Side Power Knockout
Remote Thermostat Wiring
Knockout
Optional Top Power Knockout
Return Air Opening
14
DIMENSIONAL DATA: HRP 30 & 40
Contractor:
Date: Drawing Number:
101
Engineer:
Project:
Revision:
Sept 2001
NOTES:
- Temporary riser supports provided, contractor to supply riser clamps to
support risers in multistory applications.
- Return Air Opening is on the front of the unit, Rear Right Hand Unit shown.
- Unit Includes hose kits and shut off valves.
- Risers are made with type M copper, expanded connections are provided.
- Contractor to provided couples where piping not swagged.
- Optional 2 x 8 Outside Air Opening Available.
TAG: HRP 30 -
TAG: HRP 40 -

DIMENSIONAL DATA: HRP 60 & 80
Contractor:
Date: Drawing Number:
102
Engineer:
Project:
Revision:
Sept 2001
NOTES:
- Temporary riser supports provided, contractor to supply riser clamps to
support risers in multistory applications.
- Return Air Opening is on the front of the unit, Rear Right Hand Unit shown.
- Unit Includes hose kits and shut off valves.
- Risers are made with type M copper, expanded connections are provided.
- Contractor to provided couples where piping not swagged.
- Optional 2 x 8 Outside Air Opening Available.
18 21.5
16
S R
C
P
5
60
16
Supply Air Openings
1/2" Flange
40 582-96 *
Themostat Junction Box
12" HRP 60 14" HRP 80
Optional 5" legs
38
Side Power Knockout
Remote Thermostat Wiring
Knockout
Optional Top Power Knockout
Return Air Opening
16
TAG: HRP 60 -
TAG: HRP 80 -

DISCHARGE ARRANGEMENTS: HRP 30 - 80
Contractor:
Date: Drawing Number:
103
Engineer:
Project:
Revision: Sept 2001
NOTES:
- Any combination of discharge arrangements are available
- Supply Riser is towards the center line of unit
- All Handings determined looking at return air opening
R- Right B - Back T- top
L - Left F - Front
See Schedule for
Unit Handing

RETURN AIR PANEL
MODEL SIZE A B C D
HRP 30 & 40 36 18 14 32
HRP 60 & 80 38 20 16 34
Contractor:
Date: Drawing Number:
105
Engineer:
Project:
Revision:
Sept 2001
Notes:

ACOUSTIC RETURN AIR PANEL
MODEL SIZE A B C D
HRP 30 20 30.5 18 36
HRP 40 20 30.5 18 36
HRP 60 22 32.5 20 36
HRP 80 22 32.5 20 38
Contractor:
Date: Drawing Number:
107
Engineer:
Project:
Revision: Sept 2001
Notes:

ACOUSTIC RETURN AIR PANEL : FURING DETAILS
Unit Size Width Depth Return Air
Opening Min Stud To Stud Distance A "B" with Side Risers "B" With Back Risers
HRP 30 16 18.5 14 18 1/4 Min 18 23
HRP 40 16 18.5 14 18 1/4 Min 18 23
HRP 60 18 21.5 16 20 1/4 Min 21.5 26.5
HRP 80 18 21.5 16 22 1/4 Min 21.5 26.5
o
Notes:
- Return air Panel is field painted by others
- Drywall frame is to be mounted such that there is 1/2" maximu
m
clearance between heat pump return air flange and return air pane
l
- Mount Return Air Panel centered in front of Return Air opening
- For REAR risers allow an additional 5" clearance at back of units
- Installing contractor to insulate drywall enclosure with acoustical
thermal batt insulation.
Return Air Flange
1/2" Clearance Gap Required
Stud
Acoustic Return Air Panel
4 Mounting Screws Secured
into Studs
Drywall
Stud To Stud Distance "A"
Unit Width
Unit Depth
R
S
C
C
S R
For rear risers allow 5"
clearance at back of units
B
Rear Stud
Stud
5" min
Contractor:
Date:
Engineer:
Project:
Revision:
Sept 2001
Drawing no:
108

RETURN AIR PANEL : FURING DETAILS
Unit Size Width Depth Return Air
Opening Min Stud To Stud Distance A "B" with Side Risers "B" With Back Risers
HRP 30 16 18.5 14 18 1/4 Min 18.5 23
HRP 40 16 18.5 14 18 1/4 Min 18.5 23
HRP 60 18 21.5 16 20 1/4 Min 21.5 26.5
HRP 80 18 21.5 16 20 1/4 Min 21.5 26.5
Contractor:
Date: Drawing Number:
106
Engineer:
Project:
Revision:
Sept 2001
o
Notes:
- Return air Panel is field painted by others
- Drywall frame is to be mounted such that there is 1/2" maximu
m
clearance between heat pump return air flange and return air pane
l
- Mount Return Air Panel centered in front of Return Air opening
- For REAR risers allow an additional 5" clearance at back of units
- Installing contractor to insulate drywall enclosure with acoustical
thermal batt insulation.
Return Air Flange
1/2" Clearance Gap Required
Stud Stud
Return Air Panel
4 Mounting Screws Secured
into Studs
Drywall
2.5" Min
Stud To Stud Distance "A"
Unit Width
Unit Depth
R
S
C
C
S R
For rear risers allow 5"
clearance at back of units
B
Rear Stud

DISCHARGE OPENINGS: FURING DETAILS
Model HRP30 HRP40 HRP60 HRP80
Discharge
Opening 8 x 14 10 x 14 12 x 16 16 x 16
Notes:
- 1/2" clearance required around entire unit
-Discharge flanges are 1/2" (Not Intended to be Attached to
Discharge Grille or Ductwork.)
- Installing contractor to insulate drywall enclosure with
acoustical thermal batt insulation. (Recommended)
Opening Width
Opening Width
Opening Width
Opening Width
Back Discharge
Left Discharge
Front Discharge
Stud
Stud
1/2" Clearance required
Top Discharge Opening
1/2" Discharge Flange
Right Discharge
Return Air Location
Contractor
Date: Drawing Number:
109
Engineer:
Project:
Revision: Sept 2001

Riser Size 3/4 1 1 1/4 1 1/2 2 2 1/2
Riser Sleeve Dimension "X" 7 7 7 7 9 9
Riser Sleeve Dimension "Y" 9 9 9 9 11 11
Contractor:
Date: Drawing Number:
104
Engineer:
Project:
Revision: Sept 2001
Notes:
- Temporary riser supports provided, contractor to supply clamps
for multistory applications.
- Supply riser towards center line of unit
- Riser couplings are not provided, expanded connections are
provided.
-
RISER & SLEEVING SIZES AND LOCATIONS
Right Hand Unit
Left Hand Unit
R
C
S
Return Air
CR
S
RS
CR
SC
Return Air
5
7/8
7/8
5
7/8
Return Air
Return Air
7/8
7/8
X
Y
Y
X
X
Y
X
Right Hand Unit
6.5
8
Y
Left Hand Unit
6.5
8
7/8
2.25
5.25
2.25
5.25

Troubleshooting
Should a major problem develop, refer to the following information for possible cause and
corrective steps:
Neither fan nor compressor run:
1. The fuse may be blown or the circuit breaker is open. Check electrical circuits and motor
windings for shorts or grounds. Investigate for possible overloading. Replace fuse or reset
circuit breakers after fault is corrected.
2. Wires may be loose or broken. Replace or tighten.
3. Supply voltage may be faulty. Check thermostat for correct wiring and check 24 volt
transformer for burnout.
Fan operates but compressor does not:
1. Check capacitor.
2. Wires may be loose or broken. Replace or tighten.
3. The high pressure may have tripped due to:
a. fouled or plugged condenser.
b. lack of or no condenser water.
c. too warm condenser water.
d. not enough airflow over the coil due to dirty filters.
e. coil or fan motor failure.
4. The low temperature switch may have tripped due to:
a. fouled or plugged condenser.
b. lack of or no condenser water.
c. too warm condenser water.
d. not enough airflow over the coil due to dirty filters.
e. coil or fan motor failure.
5. Check thermostat setting, calibration and wiring.
6. The compressor overload protection is open. If the compressor dome is extremely hot, the
overload will not reset until cooled down. If the overload is external, replace it. If the overload
is internal, replace the compressor.
7. The internal winding of the compressor motor may be grounded to the compressor shell. If so,
replace the compressor .
8. The compressor winding may be open. Check continuity with ohmmeter. If the winding is
open, replace the compressor.
Compressor attempts to start but doesn't:
1. Check capacitor.
2. Check for defective compressor by making resistance check on winding.
3. Check run capacitor.
Compressor runs in short cycle:
1. Check thermostat mounting and location.
2. Check all relays, relaying and contacts.
3. Check run capacitor.
4. Check high pressure switch.
5. Check low temperature switch.
6. See if reversing valve has not fully shifted to either side.
Insufficient cooling or heating:
1. Check thermostat for improper location.
2. Airflow may be insufficient. Check and clean the filter.
3. The reversing valve may be defective, creating a bypass of refrigerant. If the unit will not heat,
check the reversing valve coil.
4. Check capillary tubes for possible restriction of refrigerant flow.
5. Check for restriction in water flow.
Insufficient water flow through condenser:
1. Check to see that valves are open all the way.
2. Check for air in lines.

Troubleshooting
Should a major problem develop, refer to the following information for possible cause and
corrective steps:
Neither fan nor compressor run:
1. The fuse may be blown or the circuit breaker is open. Check electrical circuits and motor
windings for shorts or grounds. Investigate for possible overloading. Replace fuse or reset
circuit breakers after fault is corrected.
2. Wires may be loose or broken. Replace or tighten.
3. Supply voltage may be faulty. Check thermostat for correct wiring and check 24 volt
transformer for burnout.
Fan operates but compressor does not:
1. Check capacitor.
2. Wires may be loose or broken. Replace or tighten.
3. The high pressure may have tripped due to:
a. fouled or plugged condenser.
b. lack of or no condenser water.
c. too warm condenser water.
d. not enough airflow over the coil due to dirty filters.
e. coil or fan motor failure.
4. The low temperature switch may have tripped due to:
a. fouled or plugged condenser.
b. lack of or no condenser water.
c. too warm condenser water.
d. not enough airflow over the coil due to dirty filters.
e. coil or fan motor failure.
5. Check thermostat setting, calibration and wiring.
6. The compressor overload protection is open. If the compressor dome is extremely hot, the
overload will not reset until cooled down. If the overload is external, replace it. If the overload
is internal, replace the compressor.
7. The internal winding of the compressor motor may be grounded to the compressor shell. If so,
replace the compressor .
8. The compressor winding may be open. Check continuity with ohmmeter. If the winding is
open, replace the compressor.
Compressor attempts to start but doesn't:
1. Check capacitor.
2. Check for defective compressor by making resistance check on winding.
3. Check run capacitor.
Compressor runs in short cycle:
1. Check thermostat mounting and location.
2. Check all relays, relaying and contacts.
3. Check run capacitor.
4. Check high pressure switch.
5. Check low temperature switch.
6. See if reversing valve has not fully shifted to either side.
Insufficient cooling or heating:
1. Check thermostat for improper location.
2. Airflow may be insufficient. Check and clean the filter.
3. The reversing valve may be defective, creating a bypass of refrigerant. If the unit will not heat,
check the reversing valve coil.
4. Check capillary tubes for possible restriction of refrigerant flow.
5. Check for restriction in water flow.
Insufficient water flow through condenser:
1. Check to see that valves are open all the way.
2. Check for air in lines.

Troubleshooting
Water drips from conditioner:
1. Check for dirty filter.
2. Check to see if condensate drain runs uphill.
3. See if blower motor is up to speed.
4. Check for loose or mispositioned blower.
5. Are drains properly trapped?
Noisy unit operation:
1. Check for fan wheel hitting the housing. Adjust for clearance.
2. Check for bent fan wheel. Replace if damaged. Check for loose fan wheel on shaft. Tighten.
3. Make sure compressor is floating free on its isolator mounts.
4. Check for tubing touching compressor or other surface. Readjust tubing by bending slightly.
5. Check screws on all panels. Tighten.
6. Check for chattering or humming in the contactor relays due to low voltage or a defective holding coil.
Replace component.
7. Check water balance to unit for proper water flow rate.
Start-up
1. Open all valves to full open position and turn on power to the conditioner.
2. Set thermostat for FAN ONLY operation by selecting OFF at the system switch and ON at the fan
switch. If AUTO fan operation were selected, the fan would cycle with the compressor. Check for proper
air delivery.
3. Set thermostat to COOL. If the thermostat is an automatic changeover type, simply set the cooling
temperature to the coolest position. On manual changeover types additionally select COOL at the system
switch. Again, many conditioners have time delays which protect the compressor against short cycling.
After a few minutes of operation, check the discharge grilles for cool air delivery. Measure the temperature
difference between entering and leaving water. It should be approximately 1 1/2 times greater than the
heating mode temperature difference. For example, if the cooling temperature difference is 15 degrees, the
heating temperature difference should have been at ten degrees. Without automatic flow control valves,
target a cooling temperature difference of 10° to 14°F (5° to 8°C). Adjust the combination shutoff/balancing
valve in the return line to a water flow rate which will result in the 10° to 14° (5° to 8°C) difference.
4. Set thermostat to HEAT. If thermostat is the automatic changeover type, set system switch to the
AUTO position and depress the heat setting to the warmest selection. Some conditioners have built-in time
delays which prevent the compressor from immediately starting. With most control schemes, the fan will
start immediately. After a few minutes of compressor operation, check for warm air delivery at discharge
grille. If this is a "cold building" start-up, leave unit running until return air to the unit is at least 65°F
(18°C). Measure the temperature difference between entering and leaving air and entering and leaving
water. With entering water of 60° to 80°F (16° to 27°C), leaving water should be 6° to 12°F (3.3° to 6.6°C)
cooler, and the air temperature rise through the machine should not exceed 35°F (19°C). If the air
temperature rise exceeds 35°F (19°C), then the water flow rate is probably inadequate. If the water
temperature difference is less than 6 degrees, the water flow rate is excessive. If the water temperature
difference exceeds 12°F (6.6°C), then the water flow rate is inadequate.
5. Check the elevation and cleanliness of the condensate line. If the air is too dry for sufficient
dehumidification, slowly pour enough water into the condensate pan to ensure proper drainage.
6. If the conditioner does not operate, check the following points:
a. Is supply voltage to the machine compatible?
b. Is thermostat type appropriate?
c. Is thermostat wiring correct?

Maintenance
1. Normal maintenance on all conditioners is generally limited to filter changes and fan motor
lubrication. Lubrication of the fan motor should be performed in accordance with the
instruction label on the conditioner. Be sure to use nondetergent electric motor oil.
2. Filter changes are required at regular intervals. The time period between changes will
depend upon the project requirements. Some applications such as motels produce a lot of
lint from carpeting and linen changes, and will require more frequent filter changes. It is
suggested that the filter be checked at 60-day intervals for the first year until experience is
acquired. If light cannot be seen through the filter when held up to sunlight or a bright light, it
should be changed. A more critical standard may be desirable.
3. The condensate drain pan should be checked annually, and cleaned and flushed as
required.
4. Recording of performance measurements of volts, amps, and water temperature differences
(both heating and cooling) is recommended. A comparison of logged data 3 with start-up
and other annual data is useful as an indicator of general equipment condition.
5. Periodic lockouts always are caused by air or water problems. The lockout (shutdown) of
the conditioner is a normal protective result. Check for dirt in the water system, water flow
rates, water temperatures, airflow rates (maybe dirty filter), and air temperatures. If the
lockout occurs in the morning following a return from night setback, entering air below
machine limits may be the cause.

Operating Limits
Environment
This equipment is designed for indoor installation only. Sheltered locations such as attics, garages, etc.,
generally will not provide sufficient protection against extremes in temperature and/or humidity, and
equipment performance, reliability, and service life may be adversely affected.
Air and water limits
Cooling Heating
Min Ambient Air 50oF(10oC) 50oF(10oC)
Normal Ambient Air 80oF(27oC) 70oF(21oC)
Max Ambient air 110oF(38oC) 85oF(29oC)
Min Entering Air 50oF(10oC) 50oF(10oC)
Normal Entering Air, db/wb 80/67oF(27/19oC) 70oF(21oC)
Max Entering Air, db,wb 95/78oF(35/26oC) 80oF(27oC)
Water Enthalpy Chart Cooling Heating
Min Entering Water 55oF(13oC) 55oF(13oC)
Normal Ambient Air 85oF(29 oC) 70oF(21oC)
Max. Entering Water 110oF (43oC) 90oF(32oC)
Operating Voltages chart Volts Min Volts Max
115/1/60 110 127
208/60/1 203 253
230/60/1 203 253

Unit Size Namplate
Voltage Compressor RLA Compressor LRA Fan Motor FLA Max Fuse Size
(Amps)
HRP 30 208/ 230 - 1 4.5 /4.3 25 0.68 15
HRP 40 208/ 230 - 1 5.7 / 5.4 27 0.68 15
HRP 60 208/ 230 - 1 8.5 / 8.1 47 0.68 15
HRP 80 208/ 230 - 1 11.7 / 11.0 56 2.7 20
NOTES:
1. Minimum circuit ampacity are for non electric heat units.
2. Maximum fuse size should be HACR type circuit breaker C/B & wiring to C/B
by others.
3. Compressor and fan motors are permanent split capacitor type, all single phase.
A vertical stacking heat pump provides the essential benefits of a centralized system but gives the
individual choice of heating or cooling. Additionally, the occupant may select heating, cooling,
or may shut off the unit without affecting conditions maintained in other spaces.
General Design Steps
Electrical Data – HTS Signature Series : High Rise Heat Pumps
During hot weather with most or all units cooling, heat removed from the air is transfer to the water
loop. A water tower rejects the excess heat outdoors to maintain a maximum water temperature of
approximately 95oF