2100-250
INSTALLATION
INSTRUCTIONS
WATER SOURCE
HEAT PUMPS
MODELS:
WPV24C
WPV36C
WPV48C
WPV30C
WPV42C
WPV60C
MIS-658
Earth Loop Fluid
Temperatures 25° - 110°
Ground Water Temperatures 45° - 75°
BARD MANUFACTURING COMPANY
Bryan, Ohio 43506
Since 1914...Moving ahead, just as planned.
Manual:
Supersedes:
File:
Date:
2100-250 Rev. E
Rev. D
Volume I, Tab 8
February 10, 2000
Copyright February 2000
CONTENTS
Application and Location .................................... 3
Open Loop (Well System Application) ............. 15
General ................................................................... 3
Shipping Damage ................................................... 3
Application .............................................................. 3
Location .................................................................. 3
Ductwork ................................................................. 3
Filter ........................................................................ 4
Condensate Drain ................................................... 4
Piping Access to the Unit ........................................ 4
Water Connections ............................................... 15
Well Pump Sizing ................................................. 16
System Start Up Procedure .................................. 16
Water Corrosion ................................................... 17
Remedies of Water Problems ............................... 18
Lake and Pond Installations ................................. 18
Sequence of Operation ..................................... 20
Main Power ............................................................. 5
Thermostat Low Voltage Wiring ............................. 5
Cooling With or Without Duct Heaters ................. 20
Single Stage Heat Without Duct Heaters ............. 20
Two Stage Heat With Duct Heaters ...................... 20
Emergency Heat ................................................... 20
Add-On Heat Recovery Hot Water Heater .......... 7
Quick Reference Trouble-Shooting Chart ....... 30
Wiring ................................................................... 5
General ................................................................... 7
Installation .............................................................. 7
Units With Ball Valves ............................................ 8
Start-Up, Checkout Maintenance ........................... 8
Heat Pump Service ................................................. 8
Closed Loop (Earth Coupled Ground
Loop Applications) ......................................... 9
Thermostat Diagrams ........................................ 31
Wiring Diagrams ......................................... 32--34
Ground Source Heat Pump
Performance Report ................................35-36
Circulation System Design ..................................... 9
Heat Pump Connections Without Pump Kit .......... 10
Piping Connections ............................................... 10
System Start Up Procedure .................................. 14
Tables
Figures
Table 1
Table 2
Table 3
Table 4
Table 5A
Table
Table
Table
Table
6
7
8
9
Specifications ......................................... 1
Water Coil Pressure Drop ...................... 1
Indoor Blower Performance ................... 2
Accessory Items - Duct Heaters ............ 6
thru 5F ........................................... 24-26
Capacity & Efficiency Ratings
Capacity Multiplier Factors ................... 27
Correction Factors ............................... 27
Pressure Table - Cooling ...................... 28
Pressure Table - Heating ..................... 29
Figure
Figure
Figure
Figure
Figure
1
2
3
4
5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure
Figure
Figure
Figure
Figure
Figure
16
17
18
19
20
21
Figure 22
Filter ...................................................... 4
Piping To the Unit .................................. 4
Optional Terminal Board Installation ..... 5
Duct Heater ........................................... 6
Installation of Add-On Recovery
Hot Water Heater .................................. 7
Interconnecting Tubing ......................... 8
Units With Ball Valves ........................... 8
Circulations System .............................. 9
............................................................ 11
............................................................ 11
............................................................ 11
Pump Module Hookup ........................ 12
............................................................ 12
Pump Module Hookup Performance ... 13
Pressure and Temperature Sensing
Adapter and Components ................... 13
Water Connections ............................. 16
Acid Cleaning Water Coil .................... 18
Water Well System ............................. 19
Functional Components ...................... 21
Control Location .................................. 21
Water Source Heat Pump Cooling Cycle ...................................... 22
Water Source Heat Pump Heating Cycle ..................................... 23
TABLE 1
SPECIFICATIONS
MODEL
WPV24C
WPV30C
WPV36C
WPV42C
WPV48C
WPV60C
Electrical Rating (60HZ/V/PH)
230/208-1
230/208-1
230/208-1
230/208-1
230/208-1
230/208-1
Operating Voltage Range
253 - 197
253 - 197
253 - 197
253 - 197
253 - 197
253 - 197
Minimum Circuit Ampacity
15.0
14.4
20.5
27.5
34.5
36.0
#14
#14
#12
#10
#8
#8
20
25
35
45
50
60
8.9/9.4
10.3/11.3
14.8/16.3
19.5/21.2
23.7/27.0
25.9/28.8
230/208
230/208
230/208
230/208
230/208
230/208
7/7.5
8.2/9.2
12.7/14.2
14.8/16.5
19.0/22.3
21.2/24.1
9.7
12.2
14.7
18.3
23.7
25.0
50/50
61.7/61.7
82/82
109/109
129/129
169/169
1/4 3-spd
1/3 2-spd
1/3 2-spd
1/2 3-spd
1/2 3-spd
1/2 3-spd
1.9
2.1
2.1
4.7
4.7
4.7
3.16/3/14
3.16/3/14
3.16/3/14
4.6/3/13
4.6/3/13
4.6/3/13
240
240
255
350
370
375
+ Field Wire Size
++Delay Fuse Max. or Ckt. Bkr.
Total Unit Amps 230/208
COMPRESSOR
Volts
Rated Load Amps 230/208
Branch Ckt. Selection Current
Lock Rotor Amps 230/208
BLOWER MOTOR and EVAPORATOR
Blower Motor - HP/Spd
Blower Motor - Amps
Face Area Sq. Ft./ Rows/
Fins Per Inch
SHIPPING WEIGHT LBS.
TABLE 2
WATER COIL PRESSURE DROP
Model
WPV24C
WPV30C
WPV36C
WPV42C
WPV48C, WPV60C
GPM
PSIG
Ft H d
PSIG
Ft H d
PSIG
Ft H d
PSIG
Ft H d
PSIG
Ft H d
4
3.00
6.93
2.50
5.78
---
---
---
---
---
---
5
3.50
8.08
3.20
7.39
2.20
5.08
---
---
---
---
6
4.10
9.50
5.30
12.24
2.75
6.36
1.00
2.31
1.65
3.82
7
4.70
10.85
6.40
14.78
3.40
7.86
1.49
3.44
2.35
5.43
8
---
---
9.60
22.18
4.15
9.59
2.02
4.67
3.10
7.16
9
---
---
---
---
5.00
11.56
2.60
6.01
3.86
8.92
10
---
---
---
---
5.95
13.75
3.22
7.44
4.65
10.75
11
---
---
---
---
---
---
3.90
9.01
5.50
12.71
12
---
---
---
---
---
---
4.60
10.63
6.40
14.79
13
---
---
---
---
---
---
---
---
7.45
17.22
14
---
---
---
---
---
---
---
---
8.60
19.88
15
---
---
---
---
---
---
---
---
9.90
22.89
Manual 2100-250
Page 1
TABLE 3
INDOOR BLOWER PERFORMANCE
j
(CFM – Dry Coil with Filter)
WPV42C, WPV48C, WPV60C
Model
WPV24C
WPV30C
WPV36C
Without Optional
CW45 Installed
With Optional
CW45 Installed
ESP in
WC
Motor Speed
Motor Speed
Motor Speed
Motor Speed
High
Medium
Low
High
Low
High
Medium
Low
High
Medium
.00
1,033
946
774
1,300
1,190
1,740
1,650
1,530
1,740
1,600
.10
983
904
757
1,275
1,150
1,695
1,607
1,510
1,695
1,550
.20
942
870
742
1,210
1,110
1,650
1,570
1,480
1,650
1,520
.30
903
836
720
1,150
1,060
1,602
1,532
1,443
1,625
1,500
.40
857
794
688
1,080
1,000
1,550
1,490
1,400
1,500
1,460
.50
799
742
648
1,010
960
1,490
1,435
1,348
1,440
1,380
.60
740
681
603
920
875
1,420
1,365
1,290
1,390
1,310
j
For wet coil CFM multiply by .96
ESP = External Static Pressure (inches of water)
Manual 2100-250
Page 2
APPLICATION AND LOCATION
GENERAL
Units are shipped completely assembled and internally wired, requiring only duct connections, thermostat wiring, 230-208 volt AC
power wiring, and water piping. The equipment covered in this manual is to be installed by trained, experienced service and
installation technicians. Any heat pump is more critical of proper refrigerant charge and an adequate duct system than a cooling
only air conditioning unit.
These instructions and any instructions packaged with any separate equipment required to make up the entire heat pump system
should be carefully read before beginning the installation. Note particularly any tags and/or labels attached to the equipment.
While these instructions are intended as a general recommended guide, they do not in any way supersede any national and/or
local codes. Authorities having jurisdiction should be consulted before the installation is made.
SHIPPING DAMAGE
Upon receipt of the equipment, the carton should be checked for external signs of shipping damage. If damage is found, the
receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier's agent.
APPLICATION
Capacity of the unit for a proposed installation should be based on heat loss calculations made in accordance with methods of
the Air Conditioning Contractors of America, formerly National Warm Air Heating and Air Conditioning Association. The air duct
system should be sized and installed in accordance with Standards of the National Fire Protection Association for the Installation
of Air Conditioning and Ventilating Systems of Other than Residence Type NFPA No. 90A, and Residence Type Warm Air
Heating and Air Conditioning Systems, NFPA No. 90B.
LOCATION
The unit may be installed in a basement, closet or utility room provided adequate service access is insured. Ideally, three sides
of the unit should have a minimum access clearance of two feet but the unit can be adequately serviced if two or only one side
has a minimum two feet of clearance. The unit should be located in the conditioned space to prevent freezing of the water lines.
Clearance to combustible materials is 0 inches for the heat pump. If an optional duct heater is installed, follow the instructions
packed with the duct heater for specifications regarding clearance to combustible material.
Before setting the unit, consider ease of piping, drain and electrical connections for the unit. Also, for units which will be used
with a field installed heat recovery unit, consider the proximity of the unit to the water heater or storage tank. Place the unit on a
solid base, preferably concrete, to minimize undesirable noise and vibration. DO NOT elevate the base pan on rubber or cork
vibration eliminator pads as this will permit the unit base to act like a drum, transmitting objectionable noise.
DUCTWORK
If the unit is to be installed in a closet or utility room which does not have a floor drain, a secondary drain pan under the entire
unit is highly recommended.
DO NOT install the unit in such a way that a direct path exists between any return grille and the unit. Rather, insure that the air
entering the return grille will make at least one turn before entering the unit air coil. This will reduce possible objectionable
compressor and air noise from entering the occupied space.
Design the ductwork according to methods given by the Air Conditioning Contractors of America. When duct runs through
unconditioned spaces, it should be insulated with vapor barrier. It is recommended that flexible connections be used to connect
the ductwork to the unit in order to keep the noise transmission to a minimum.
Manual 2100-250
Page 3
FILTER
This unit must not be operated without a filter. It comes equipped with a disposable filter which should be checked often and
replaced if dirty. Insufficient air flow due to undersized duct systems or dirty filters can result in nuisance tripping of the high or
low pressure control. Refer to Table 1 for correct air flow and static pressure requirements. See FIGURE 1.
FIGURE 1
CONDENSATE DRAIN
Determine where the drain line will run. This drain line contains cold water and must be insulated to avoid droplets of water from
condensing on the pipe and dropping on finished floors or the ceiling under the unit. A trap MUST BE installed in the drain line
and the trap filled with water prior to start up. The use of plugged tees in place of elbows to facilitate cleaning is highly recommended.
Drain lines must be installed according to local plumbing codes. It is not recommended that any condensate drain line be
connected to a sewer main. The drain line enters the unit through the water access panel, see FIGURE 2, and connects to the
FPT coupling under the condensate drain pan.
PIPING ACCESS TO THE UNIT
Water piping to and from the unit enters the unit casing through the water access panel. Piping connections are made directly to
the heat exchanger coil and are 3/4" or 1" FPT. The access panel can be installed on the front of the unit (as received) or on the
right side of the unit. It is highly recommended that the piping from the water coil to the outside of the casing be installed while
the unit is completely accessible and before it is finally set in position. Two 1 3/4" inch plastic bushings are provided (packed
with unit installation instructions) to protect piping from sheet metal edges of access panel. See FIGURE 2.
FIGURE 2
Install 1.750 snap busing
(2 supplied, packed with
installation instructions)
into opening prior to
installatin piping.
Manual 2100-250
Page 4
MIS-381
Remove desired knockout
for piping unit
WIRING
All electrical connections are made through the top of the unit. High voltage connections are made with wire nuts to the factoryprovided pigtail leads in the junction box. Low voltage connections are made to the terminal strip mounted on the top of the unit.
Refer to the wiring diagram for connecting the terminals.
MAIN POWER
Refer to the unit serial plate for wire sizing information and correct protection size. Each unit is marked with a "Minimum Circuit
Ampacity." This means that field wiring connections must be sized to carry that amount of current. Each unit and/or wiring
diagram is also marked "Use Copper Conductors Only," meaning the leads provided are not suitable for aluminum wiring. Refer
to the National Electric Code for complete current-carrying capacity data on the various grades of wiring material.
The unit rating plate lists "Maximum Overcurrent Protective Device" that is to be used with the equipment. This device may be a
time delay fuse or HACR type circuit breaker. The correct size overcurrent protective device must be used to provide for proper
circuit protection and to avoid nuisance trips due to the momentary high starting current of the compressor motor.
THERMOSTAT LOW-VOLTAGE WIRING
A 24 volt terminal strip is mounted on top of the unit with an optional terminal board cover included with the unit installation
instructions. See FIGURE 3. Two types of thermostats are available: 1) single stage heat, single stage cool to operate the heat
pump alone--without backup duct style electric heaters. This thermostat is equipped with a signal light to indicate when the unit
is "locked out" because of the low temperature or high pressure control. Refer to the wiring diagram 4091-810 for correct
connection of the terminals. 2) two stage heat, single cool to operate the heat pump or duct heaters on heating or the heat pump
on cooling. This thermostat is also equipped with a signal light to indicate when the unit is "locked out" because of operation of
the low temperature or high pressure control. In addition, a second signal light tells when the unit has been placed in Emergency
Heat. Refer to the wiring diagram 4091-811 and to the wiring diagram packed with the duct heater for correct connection of the
low voltage terminals.
FIGURE 3
Remove screws from terminal
board. Place cover in position,
and reinstall screws to secure
cover to board
Terminal Board
Left Side
Terminal board cover packed
with installation instructions)
Right Side
MIS-380
Manual 2100-250
Page 5
TABLE 4
ACCESSOSRY ITEMS – DUCT HEATER
(See Figure 4)
PH
Volts
KW
Minimum
Ampacity
8604-080
1
240
5.0
8604-081
1
240
8604-082 k
1
8604-083 k
1
Part No.
Wire Siz e j
Dimensions
CU
AL
Maximum
F u se
27
#10
#8
30
8
10
4
7
7
12
9.8
52
#6
#4
55
8
10
4
7
7
16
240
14.7
78
#4
#1
80
15
18
5
11
9
18
240
19.2
100
#2
#0
100
15
18
5
11
9
18
A
B
C
D
E
F
j Use wire suitable for at leat 75° C.
k Fused units (over 48 amperers).
NOTE: All duct heaters are supplied with backup protection and internal fusing as required by NEC.
FIGURE 4
The following is a verbal description of the proper procedure for connecting the low voltage hookups for the duct heater. (Refer
to wiring diagram 4091-811).
1.
Black wire from duct heater to C on the 24 volt terminal block.
2.
Green wire from duct heater to green wire from thermostat. These wires must be wire nutted and isolated from the terminal
block. Failure to do so will result in improper heater operation.
3.
Connect green with tracer from heater to the G terminal on the 24 volt terminal block.
4.
Connect the white wire from the heater to W2 on 24 volt terminal block.
A.
For the 15 and 20KW duct heaters, connect the white and white with black tracer wires to W2.
Manual 2100-250
Page 6
ADD-ON HEAT RECOVERY HOT WATER HEATER
NOTE: This section applies only if a water heating recovery device is added.
GENERAL
This high efficiency water source heat pump series was designed for easy field installation of a heat recovery device for hot water
heating commonly known as a desuperheater water heater. The amount of annual hot water supplied and thus additional energy
cost savings will depend on the amount of hot water your family uses and the number of hours your heat pump operates. We
recommended that a UL recognized heat recovery device be used. This device must be suitable for potable water.
INSTALLATION
1.
Follow all local, state and national codes applicable to the installation of heat recovery devices.
2.
Follow the installation procedures you receive with the heat recovery device.
3.
Connect the refrigerant lines between the heat recovery device and the heat recovery valves in the heat pump using the
inlet and exit panel on the lower left side of the unit as shown in FIGURE 5. Keep dirt and moisture out of the interconnecting tubing using good refrigeration service procedures. See FIGURE 5. Use refrigeration grade (type L) copper tubing.
The tube diameter should be the same as the valve for lengths up to 15 feet each way. For lengths between 15 and 25 feet,
increase the diameter 1/8". Avoid placing the heat recovery device over 25 feet from the heat pump.
This tubing should be insulated with Armaflex insulation. Tubing should be protected from abrasion and damage.
FIGURE 5
Connection between outlet of
heat recovery device and
discharge line to reversing valve
MIS-094
Refrigerant flow
4.
Connection from compressor discharge tube to inlet
of heat recovery device
Evacuate the heat recovery device interconnecting tubing and heat exchanger through the process service ports A or B
shown in FIGURE 6 and pressurize with Refrigerant 22 and perform a leak check. Release the charge used for pressurization, leak check and re-evacuate. Add 1 ounce of refrigerant for each 10 feet of additional interconnecting tubing to the total
system charge. Replace the caps and tighten.
Manual 2100-250
Page 7
FIGURE 6
MIS-629
UNITS WITH BALL VALVES
5.
Remove valve stem caps "C" and "D" shown in FUGURES 6 & 7. Turn the valve stems one-quarter turn counter-clockwise. See FIGURE 7. This now perrmits the discharge refrigerant from the compressor to flow through valve No. 1 to the
heat recovery coil heat exchanger and back through valve No. 2 and then to the condenser inlet. Replace the valve stem
cap and finger tighten. Then tighten an additional 1/4 turn. A metal to metal seal is now complete. See FIGURE 7.
FIGURE 7
6.
Wire the heat recovery device er the diagram supplied with the heat recovery unit. Turn power to the air conditioner prior
to wiring the heat recovery unit. DO NOT in sny esy alter any factory or safety circuits on the air conditioner.
START-UP, CHECKOUT MAINTENANCE
Follow the procedures supplied iwth the heat recovery unit.
HEAT PUMP SERVICE
Wile performing any heat pump service analysis, turn water pump switch to off as it could affect the refrigerant and be misleding.
Manual 2100-250
Page 8
CLOSED LOOP
(Earth Coupled Ground Loop Applications)
NOTE: Low temperature thermostat must be reset from factory setting to 15º for closed loop
applications.
This unit is designed to work on earth coupled ground loop systems, however, these systems operate at entering water (without
antifreeze) temperature well below the temperature normally experienced in water well system.
For information on earth coupled loop design, piping connections to heat pump and installation refer to manual 2100-099, "Earth
Coupled Loop System Design Manual," available from your distributor.
THE CIRCULATION SYSTEM DESIGN
Equipment room piping design is based on years of experience with earth coupled heat pump systems. The design eliminates
most causes of system failure.
Surprisingly, the heat pump itself is rarely the cause. Most problems occur because designers and installers forget that a closed
loop earth coupled heat pump system is NOT like a household plumbing system.
Most household water systems have more than enough water pressure either from the well pump or the municipal water system
to overcome the pressure or head loss in 1/2 inch or 3/4 inch household plumbing. A closed loop earth coupled heat pump
system, however, is separated from the pressure of the household supply and relies on a small, low wattage pump to circulate
the water and antifreeze solution through the earth coupling, heat pump and equipment room components.
The small circulator keeps the operating costs of the system to a minimum. However, the performance of the circulator MUST be
closely matched with the pressure or head loss of the entire system in order to provide the required flow through the heat pump.
Insufficient flow through the heat exchanger is one of the most common causes of system failure. Proper system piping design
and circulator selection will eliminate this problem.
Bard supplies a worksheet to simplify head loss calculations
and circulator selection. Refer to "Circulating Pump
Worksheet" section in manual 2100-099.
FIGURE 8
Two general methods are used to pipe the water circuit in
the equipment room. The first and easiest to use is to
install a pump module. This module comes complete
with connecting hose and heat pump adapters available
from Bard. A second method is to "site build" the piping
at the installation.
To move the transfer fluid (water or antifreeze and water
solution) through the earth loop system and the water
source heat pump, some type of circulation system is
required. Design of circulation system must include
provisions for the following. See FIGURE 8.
1.
Selection of a circulation pump or pumps for total
system.
2.
Providing air bleed off before start-up running.
3.
Providing for flow monitoring.
4.
Positive pressure control and limiting.
5.
Antifreeze charging capability.
NOTE: The expansion and contraction of earth loop piping may cause a 50 to 60 psig water pressure charge in system between
summer to winter.
Manual 2100-250
Page 9
The components for a circulation system are, See Figure 8:
1.
Circulating pump systems are engineered for each individual system to provide the correct water flow and overcome the
friction loss of the system piping. Isolation flanges or ball valves are used to insulate pump from system piping. You need
to be able to remove the pump from piping without losing the transfer fluid for repairs if ever required.
*Determining pressure drop and selecting a circulation pump or pumps. It is very important in selecting the circulating
pump that a very accurate pressure drop calculation be made because final pressure drop at the selected pump must pump
against will to determine the actual flow rate (GPM) that is delivered to the water source heat pump, the pumping cost and
efficiency of the entire system.
2.
Ball valve and flange
3.
Barb X MIP brass adapter
4.
Brass test plugs--in order to start up and troubleshoot a closed loop system properly, water in and water out temperatures
at the heat pump must be monitored. A test plug is installed on one leg of each connection line. A probe thermostat can
be temporarily inserted, the temperature monitored and the thermometer removed. Use one thermometer to monitor these
temperatures. Using two different thermometers to measure the temperature differential can introduce large measurement
errors. They are also used to measure pressure drop to determine coil flow rate.
5.
Bard X insert brass adapter
6.
Two boiler drains are located on both sides of the circulator for final filling, air purging and antifreeze addition.
The top drain should be the highest point in the equipment room piping. This will help purge air out of the system during final
filling at start up.
7.
PE or PB pipe to fit transition
8.
One inch reinforced flexible hose
9.
90º street ell (brass)
10.
Flow meter (Bard part No. 8603-017)--or equivalent side to monitor water flow is recommended.
HEAT PUMP CONNECTIONS WITHOUT PUMP KIT
The units have various female connections inside on water coil. To keep losses small, all piping and components in the heat
pump should be one inch copper or plastic. The transition to one inch pipe should be made at the exterior of the heat pump if 3/4
inch piping is used in small heat pump models.
Be sure to use a backup wrench when installing the adapters to the heat pump.
PIPING CONNECTIONS
Up to 12 feet of reinforced flexible hose is used. Cut hoses to the desired lengths and install with as few bends as possible.
Close bends increase pipe head loss so any bends should be as wide as possible. Use the clamps to secure hoses in position.
Manual 2100-250
Page 10
FIGURE 9
SUPPLY AIR
RETURN AIR
Legend
1 - Circulation pump
2 - Ball valve & flange
7 - Barb X MIP brass adapter
11 - Petes plug
14 - Barb X insert brass adapter
15 - Ball valve threaded
16 - PE to fit transition
17 - Flexible hose
19 - 90º street ell (brass)
20 - Visual flow meter
21 - Saddle fusion fitting
22 - End cap
23 - PE 3408 pipe
24 - 90º PE 3408
25 - U-bend PE 3408
Drawings courtesy of Oklahoma State University
DETAIL C
Polybutylene may also be used in
place of Polyethylene pipe shown
on drawings.
Manual 2100-250
Page 11
FIGURE 12
PUMP MODULE HOOKUP
GPM-1 WITHOUT CABINET SHOWN
GROUND
LOOP
WATER IN
HEAT PUMP
WATER OUT
COMPRESSOR
WATER OUT
(PRESSURE TEMPERATURE
TEST PLUG)
WATER IN
(PRESSURE TEMPERATURE
TEST PLUG)
PIPING ACCESS PANEL (MAY BE
INSTALLED AS SHOWN OR ON
LEFT OR RIGHT SIDE OF UNIT.
iNSTALL 1.750 SNAP BUSHING
FIGURE 13
Manual 2100-250
Page 12
GROUND LOOP
WATER OUT
Head (Feet)
FIGURE 14
PUMP MODULE HOOKUP
Flow (GPM)
Head (Feet)
FIGURE 15
PRESSURE AND TEMPERATURE SENSING ADAPTER AND COMPONENTS
Flow (GPM)
Manual 2100-250
Page 13
SYSTEM START UP PROCEDURE
1.
Be sure main power to the unit is OFF at disconnect.
2.
Set thermostat system switch to OFF, fan switch to AUTO.
3.
Move main power disconnect to ON. Except as required for safety while servicing, DO NOT OPEN THE UNIT
DISCONNECT SWITCH.
4.
Check system air flow for obstructions.
A.
Move thermostat fan switch to ON. Blower runs.
B.
Be sure all registers and grilles are open.
C.
Move thermostat fan switch to AUTO. Blower should stop.
5.
Flush, fill and pressurize the closed loop system as outlined in manual 2100-099.
6.
Fully open the manual inlet and outlet valves. Start the loop pump module circulator(s) and check for proper operation. If
circulator(s) are not operating, turn off power and diagnose the problem.
7.
Check fluid flow using a direct reading flow meter or a single water pressure gauge, measure the pressure drop at the
pressure-temperature plugs across the water coil. Compare the measurement with flow versus pressure drop table to
determine the actual flow rate. If the flow rate is too low, recheck the selection of the loop pump module model for
sufficient capacity. If the module selection is correct, there is probably trapped air or a restriction in the piping circuit.
8.
Start the unit in cooling mode. By moving the thermostat switch to cool, fan should be set for AUTO.
9.
Check the system refrigerant pressures against the cooling refrigerant pressure table in the installation manual for rated
water flow and entering water temperatures. If the refrigerant pressures do not match, check for air flow problem then
refrigeration system problem.
10.
Switch the unit to the heating mode. By moving the thermostat switch to heat, fan should be set for AUTO.
11.
Check the refrigerant system pressures against the heating refrigerant pressure table in installation manual. Once again,
if they do not match, check for air flow problems and then refrigeration system problems.
NOTE: If a charge problem is determined (high or low):
A.
Check for possible refrigerant leaks.
B.
Recover all remaining refrigerant from unit and repair leak.
C.
Evacuate unit down to 29 inches of vacuum.
D.
Recharge the unit with refrigerant by weight. This is the only way to insure a proper charge.
Manual 2100-250
Page 14
OPEN LOOP (Well System Applications)
NOTE: Low temperature thermostat factory set to 25º for open loop applications.
WATER CONNECTIONS
It is very important that an adequate supply of clean, noncorrosive water at the proper pressure be provided before the installation is made. Insufficient water, in the heating mode for example, will cause the low temperature control to trip, shutting down the
heat pump. In assessing the capacity of the water system, it is advisable that the complete water system be evaluated to prevent
possible lack of water or water pressure at various household fixtures whenever the heat pump turns on. All plumbing to and
from the unit is to be installed in accordance with local plumbing codes. The use of plastic pipe, where permissible, is recommended to prevent electrolytic corrosion of the water pipe. Because of the relatively cold temperatures encountered with well
water, it is strongly recommended that the water lines connecting the unit be insulated to prevent water droplets from condensing
on the pipe surface.
Refer to piping, FIGURE 16. Slow closing Solenoid Valve (6) with a 24V coil provides on/off control of the water flow to the unit.
Refer to the wiring diagram for correct hookup of the valve solenoid coil.
Constant Flow Valve (7) provides correct flow of water to the unit regardless of variations in water pressure. Observe the water
flow direction indicated by the arrow on the side of the valve body. Following is a table showing which valve is to be installed with
which heat pump.
CONSTANT FLOW VALVES
Part No.
Min. Available
Flow Rate
Pressure PSIG
GPM
8603-007
15 (1)
6
8603-008
15 (1)
8
8603-010
15 (1)
4
8603-011
15 (1)
5
(1)The pressure drop through the constant flow valve will vary depending
on the available pressure ahead of the valve. Unless a minimum of 15 psig
is available immediately ahead of the valve, no water will flow.
Strainer (5) installed upstream of constant flow valve (7) to collect foreign material which would clog the flow valve orifice.
The figure shows the use of shut-off valves (9) and (11), on the in and out water lines to permit isolation of the unit from the
plumbing system should future service work require this. Globe valves should not be used as shutoff valves because of the
excessive pressure drop inherent in the valve design. Instead use gate or ball valves as shut-offs so as to minimize pressure
drop.
Drain cock (8) and (10), and tees have been included to permit acid cleaning the refrigerant-to-water coil should such cleaning be
required. See WATER CORROSION.
Drain Cock (12) provides access to the system to check water flow through the constant flow valve to insure adequate water flow
through the unit. A water meter 1-10 GPM (8603-013) is used to check the water flow rate.
Manual 2100-250
Page 15
FIGURE 16
WELL PUMP SIZING
Strictly speaking, sizing the well pump is the responsibility of the well drilling contractor. It is important, however, that the HVAC
contractor be familiar with the factors that determine what size pump will be required. Rule of thumb estimates will invariably
lead to under or oversized well pumps. Undersizing the pump will result in inadequate water to the whole plumbing system but
with especially bad results to the heat pump--NO HEAT/NO COOL calls will result. Oversized pumps will short cycle and could
cause premature pump motor or switch failures.
The well pump must be capable of supplying enough water and at an adequate pressure to meet competing demands of water
fixtures. The well pump must be sized in such a way that three requirements are met:
1.
Adequate flow rate in GPM
2.
Adequate pressure at the fixture.
3.
Able to meet the abobe from the depth of the well-feet of lift.
The pressure requirements put on the pump are directly affected by the diameter of pipe being used, as well as, by the water
flow rate through the pipe. The worksheet included in manual 2100-078 should guarantee that the well pump has enough
capacity. It should also ensure that the piping is not undersized which would create too much pressure due to friction loss. High
pressure losses due to undersized pipe will reduce efficiency and require larger pumps and could also create water noise
problems.
SYSTEM START UP PROCEDURE
1.
Be sure main power to the unit is OFF at disconnect.
2.
Set thermostat system switch to OFF, fan switch to AUTO.
3.
Move main power disconnect to ON. Except as required for safety while servicing -- DO NOT OPEN THE
UNIt DISCONNECT SWITCH.
4.
Check system air flow for obstructions.
A.
Move thermostat fan switch to ON. Blower runs.
B.
Be sure all registers and grilles are open.
C.
Move thermostat fan switch to AUTO. Blower should stop.
5.
Fully open the manual inlet and outlet valves.
6.
Check water flow.
Manual 2100-250
Page 16
7.
A.
Connect a water flow meter to the drain cock between the constant flow valve and the solenoid valve. Run a hose
from the flow meter to a drain or sink. Open the drain cock.
B.
Check the water flow rate through constant flow valve to be sure it is the same as the unit is rated for. (Example 4
GPM for a WPV30).
C.
When water flow is okay, close drain cock and remove the water flow meter. The unit is now ready to start.
Start the unit in cooling mode. By moving the thermostat switch to cool, fan should be set for AUTO.
A.
Check to see the solenoid valve opened.
8.
Check the system refrigerant pressures against the cooling refrigerant pressure table in the installation manual for rated
water flow and entering water temperatures. If the refrigerant pressures do not match, check for air flow problem then
refrigeration system problem.
9.
Switch the unit to the heat mode. By moving the thermostat switch to heat, fan should be set for AUTO.
A.
10.
Check to see the solenoid valve opened again.
Check the refrigerant system pressures against the heating refrigerant pressure table in installation manual. Once again,
if they do not match, check for air flow problems and then refrigeration system problems.
NOTE: If a charge problem is determined (high or low):
A.
Check for possible refrigerant loss.
B.
Discharge all remaining refrigerant from unit.
C.
Evacuate unit down to 29 inches of vacuum.
D.
Recharge the unit with refrigerant by weight. This is the only way to insure a proper charge.
WATER CORROSION
Two concerns will immediately come to light when considering a water source heat pump, whether for ground water or for a
closed loop application: Will there be enough water? And, how will the water quality affect the system?
Water quantity is an important consideration and one which is easily determined. The well driller must perform a pump down
test on the well according to methods described by the National Well Water Association. This test, if performed correctly, will
provide information on the rate of flow and on the capacity of the well. It is important to consider the overall capacity of the well
when thinking about a water source heat pump because the heat pump may be required to run for extended periods of time.
The second concern, about water quality, is equally important. Generally speaking, if the water is not offensive for drinking
purposes, it should pose no problem for the heat pump. The well driller or local water softening company can perform tests
which will determine the chemical properties of the well water.
Water quality problems will show up in the heat pump in one or more of the following ways:
1.
Decrease in water flow through the unit.
2.
Decreased heat transfer of the water coil (entering to leaving water temperature difference is less).
There are four main water quality problems associated with ground water. These are:
1.
Biological Growth. This is the growth of microscopic organisms in the water and will show up as a slimy deposit through
out the water system. Shock treatment of the well is usually required and this is best left up to the well driller. The
treatment consists of injecting chlorine into the well casing and flushing the system until all growth is removed.
2.
Suspended Particles in the Water. Filtering will usually remove most suspended particles (fine sand, small gravel) from
the water. The problem with suspended particles in the water is that it will erode metal parts, pumps, heat transfer coils,
etc. So long as the filter is cleaned and periodically maintained, suspended particles should pose no serious problem.
Consult with your well driller.
Manual 2100-250
Page 17
3.
Corrosion of Metal. Corrosion of metal parts results from either highly corrosive water (acid water, generally not the case
with ground water) or galvanic reaction between dissimilar metals in the presence of water. By using plastic plumbing or
dielectric unions galvanic reaction is eliminated. The use of corrosion resistant materials (such as the Cupro Nickel coil)
through the water system will reduce corrosion problems significantly.
4.
Scale Formation. Of all the water problems, the formation of scale by ground water is by far the most common. Usually
this scale is due to the formation of calcium carbonate by magnesium carbonate or calcium sulfate may also be present.
Carbon dioxide gas (CO2), the carbonate of calcium and magnesium carbonate, is very soluble in water. It will remain
dissolved in the water until some outside factor upsets the balance. This outside influence may be a large change in water
temperature or pressure. When this happens, enough carbon dioxide gas combines with dissolved calcium or magnesium in the water and falls out of solution until a new balance is reached. The change in temperature that this heat pump
produces is usually not high enough to cause the dissolved gas to fall out of solution. Likewise, if pressure drops are kept
to a reasonable level, no precipitation of carbon dioxide should occur.
REMEDIES OF WATER PROBLEMS
Water Treatment. Water treatment can usually be economically justified for closed loop systems. However, because of the large
amounts of water involved with a ground water heat pump, water treatment is generally too expensive.
Acid Cleaning the Water Coil or Heat Pump Recovery Unit. If scaling of the coil is strongly suspected, the coil can be cleaned up
with a solution of Phosphoric Acid (food grade acid). Follow the manufacturer's directions for mixing, use, etc. Refer to the
"Cleaning Water Coil," FIGURE 17. The acid solution can be introduced into the heat pump coil through the hose bib (part 8 of
FIGURE 17). Be sure the isolation valves (parts 9 and 11 of FIGURE 17) are closed to prevent contamination of the rest of the
system by the coil. The acid should be pumped from a bucket into the hose bib (part 8 of FIGURE 17) and returned to the
bucket through the other hose bib (part 10 of FIGURE 5). Follow the manufacturer's directions for the product used as to how
long the solution is to be circulated, but it is usually circulated for a period of several hours.
FIGURE 17
LAKE AND POND INSTALLATIONS
Lakes and ponds can provide a low cost source of water for heating and cooling with a ground water heat pump. Direct usage of
the water without some filtration is not recommended as algae and turbid water can foul the water to freon heat exchanger.
Instead, there have been very good results using a dry well dug next to the water line or edge. Normal procedure in installing a
dry well is to backhoe a 15 to 20 foot hole adjacent to the body of water (set backhoe as close to the water's edge as possible).
Once excavated, a perforated plastic casing should be installed with gravel backfill placed around the casing. The gravel bed
should provide adequate filtration of the water to allow good performance of the ground water heat pump.
The following is a list of recommendations to following when installing this type of system:
A.
A lake or pond should be at least 1 acre (40,000 square feet) in surface area for each 50,000 BTUs of ground water heat
pump capacity or have 2 times the cubic feet size of the dwelling that you are trying to heat (includes basement if heated).
Manual 2100-250
Page 18
B.
The average water depth should be at least 5 feet and there should be an area where the water depth is at least 12 to 15
feet deep.
C.
If possible, use a submersible pump suspended in the dry well casing. Jet pumps and other types of suction pumps
normally consume more electrical energy than similarly sized submersible pumps. Pipe the unit the same as a water well
system.
D.
Size the pump to provide necessary GPM for the ground water heat pump. A 12 GPM or greater water flow rate is
required on all modes when used on this type system.
E.
A pressure tank should be installed in dwelling to be heated adjacent to the ground water heat pump. A pressure switch
should be installed at the tank for pump control.
F.
All plumbing should be carefully sized to compensate for friction losses, etc., particularly if the pond or lake is over 200 feet
from the dwelling to be heated or cooled.
G.
Keep all water lines below low water level and below the frost line.
H.
Most installers use 4 inch field tile (rigid plastic or corrugated) for water return to the lake or pond.
I.
The drain line discharge should be located at least 100 feet from the dry well location.
J.
The drain line should be installed with a slope of 2 inches per 10 feet of run to provide complete drainage of the line when
the ground water heat pump is not operating. This gradient should also help prevent freezing of the discharge where the
pipe terminates above the frost line.
K.
Locate the discharge high enough above high water level so the water will not back up and freeze inside the drain pipe.
L.
Where the local conditions prevent the use of a gravity drainage system to a lake or pond, you can instead run standard
plastic piping out into the pond below the frost and low water level.
WARNING
Thin ice may result in the vicinity of the discharge line.
For complete information on water well systems and lake and pond applications, refer to Manual 2100-078 available from your
distributor.
FIGURE 18
Well Cap
Electrical Line
Pitless Adapater
To Pressure Tank
Water Supply Line
Drop Pipe
15' to 20'
Deep
Gravel Fill
Water Level
12' to 15'
Lake
or
Pond
Perforated
Plastic Casing
Submersible Pump
Manual 2100-250
Page 19
SEQUENCE OF OPERATION
1. COOLING WITH OR WITHOUT DUCT HEATERS
Whenever the system lever is moved to COOL, thermostat system switch completes a circuit R to O, energizing the
reversing valve solenoid. On a call for cooling, the cooling bulb completes a circuit from R to G, energizing the blower
relay coil. The blower relay contacts complete a 230 volt circuit to the blower motor and the blower operates. R to Y
circuit is completed at the same time as the fan circuit and current flows from Y to terminal 4 at the lockout relay. Terminal
4 of the lockout relay provides two paths for current flow.
1.
Through the lockout relay coil which offers the resistance of the lockout relay coil.
2.
Through the normally closed contacts of the lockout relay to terminal 5 of the lockout relay and then through the high
and low pressure switches to the compressor contactor coil.
If the high pressure and low temperature switches remain closed (refrigerant pressure and temperature remains normal),
the path of least resistance is through these safety controls to the compressor contactor coil. The contacts of the
compressor contactor complete a 230 volt circuit to the compressor and the compressor runs. If discharge pressure
reaches the set point of the high pressure control, the normally closed contacts of the high pressure control open and
current no longer flows to the compressor contact coil--the coil drops out. Current now can take the path of least resistance through the lockout relay coil, energizing the lockout relay coil and opening terminals 4 and 5 of the lockout relay.
The lockout relay will remain energized as long as a circuit is completed between R and Y at the thermostat. In the
meantime, since the compressor is operating, refrigerant pressure will equalize and the high pressure switch will automatically reset. However, the circuit to the compressor contact will not be complete until the lockout relay is de-energized by
moving the thermostat system switch to OFF, breaking the circuit from R to Y dropping out the lockout relay coil and
permitting terminals 4 and 5 to make. When the high pressure switch closes, a circuit is complete to L at the thermostat,
energizing the signal light to indicate a malfunction. When the system switch is moved from OFF to COOL, the cycle is
repeated.
2. SINGLE STAGE HEAT WITHOUT DUCT HEATERS
Compressor circuit R to Y including lockout relay and pressure controls is the same as cooling. Blower circuit R to G is
the same as cooling. With system switch set to HEAT, no circuit is completed between R and O and reversing valve
solenoid is not energized.
3. TWO STAGE HEAT WITH DUCT HEATERS
First stage heat is the same as single heating without duct heater. When the second stage thermostat bulb makes, a
circuit is completed from C to W2, energizing the duct heater heat contactor, through the heating element and manual
reset limit. C to W2 also simultaneously energizes the 24 volt coil on the interlock relay, closing the contacts, which in
turn energize the low voltage coil on the blower relay to close the high voltage contacts and power the blower motor. The
elements and blower remain energized as long as C to W2 are made.
4. EMERGENCY HEAT
When the system switch is moved to EMER, the compressor circuit R to Y is disconnected. Control of the electric heaters
is from C to W2 and W3 through the thermostat second stage heating bulb. Blower operation is controlled by the second
stage heating bulb. Operation is the same as above, "Two Stage Heat with Duct Heaters."
Manual 2100-250
Page 20
FIGURE 19
MIS-096
FIGURE 20
Manual 2100-250
Page 21
FIGURE 21
WATER SOURCE HEAT PUMP
COOLING CYCLE
MIS-329
Manual 2100-250
Page 22
FIGURE 22
WATER SOURCE HEAT PUMP
HEATING CYCLE
MIS-328
Manual 2100-250
Page 23
CAPACITY AND EFFICIENCY APPLICATION
RATINGS BASED ON 15% SODIUM CHLORIDE
TABLES 5A – 5F
MODEL WPV24C
800 CFM
Table 5A
Dry
Bulb/
Wet Bulb
5 GPM
Fluid Temperature Entering Water Coil Degrees F
30 k
40 k
75 / 62
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
23,400
17,700
27,500
23.50
80 / 67
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
85 / 72
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
Cooling Capacity
50
60
70
80
90
100
110
22,750 22,090
17,100 16,700
26,600 25,700
21.31
19.09
21,428
16,200
24,800
16.86
20,767
15,700
23,900
14.60
20,100
15,200
23,000
12.40
19,444
14,600
22,100
10.15
18,782
14,100
21,200
7.90
18,121
13,600
20,300
5.75
24,900
18,200
29,300
24.30
24,203
17,700
28,300
21.99
23,500
17,200
27,400
19.70
22,796
16,600
26,400
17.40
22,000
16,200
25,400
15.10
21,380
15,600
24,500
12.80
20,685
15,100
23,500
10.50
19,981 19,277
14,600 14,000
22,500 21,600
8.20
5.90
27,400
19,100
32,200
25.90
26,624
18,600
31,200
23.50
25,850
18,000
30,100
21.00
25,075
17,500
29,000
18.60
24,300
16,900
28,000
16.10
23,527
16,400
26,900
13.70
22,753
15,800
25,900
11.20
21,979
15,300
24,800
8.70
21,205
14,800
23,700
6.30
Fluid Temperature Entering Water Coil Degrees F
Dry Bulb
70
Heating Capacity
25 k
30 k
40 k
50
60
70
80
Total Heating
Total Heat of Absorption
14,400
10,900
3.20
15,100
11,700
3.26
17,200
13,500
3.53
19,400
15,300
3.80
27,700
21,400
4.2
30,500
23,900
4.5
33,300
26,400
4.90
MODEL WPV30C
1,000 CFM
6 GPM
Table 5B
Dry
Bulb/
Wet Bulb
Fluid Temperature Entering Water Coil Degrees F
30 k
40 k
50
60
70
80
90
100
110
75 / 62
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
31,600
23,300
36,700
25.30
30,300
22,700
35,500
22.90
28,900
22,000
34,300
20.50
27,600
21,300
33,100
18.10
26,300
20,600
2,000
15.70
25,000
19,900
30,700
13.30
23,600
19,300
29,600
10.90
22,300
18,600
28,400
8.50
21,000
17,900
27,200
6.10
80 / 67
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
33,600
24,100
39,100
26.10
32,200
23,400
37,700
23.60
30,800
22,700
36,500
21.20
29,400
22,000
35,200
18.70
27,900
21,300
34,000
16.20
26,500
20,600
32,700
13.70
25,100
19,800
31,400
11.20
23,700
19,100
30,200
8.80
22,300
18,400
28,900
6.30
85 / 72
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
36,900
25,300
42,900
27.90
35,400
24,500
41,500
25.30
33,800
23,800
40,100
22.60
32,300
23,000
38,700
20.00
30,700
22,300
37,400
17.30
29,200
21,600
36,000
14.60
27,600
20,800
34,600
12.00
26,100
20,100
33,200
9.40
24,600
19,400
31,800
6.70
Cooling Capacity
Fluid Temperature Entering Water Coil Degrees F
Dry Bulb
Heating Capacity
25 k
30 k
40 k
50
60
70
80
70
Total Heating
Total Heat of Absorption
COP j
16,666
12,600
3.00
18,333
13,900
3.20
21,666
16,400
3.50
25,000
18,900
3.90
27,700
21,400
4.20
30,500
23,900
4.50
33,300
26,400
4.90
Manual 2100-250
Page 24
MODEL WPV36C
1,150 CFM
7 GPM
Table 5C
Dry
Bulb/
Wet Bulb
Fluid Temperature Entering Water Coil Degrees F
30 k
40 k
50
60
70
80
90
100
110
75 / 62
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
37,200
26,900
41,200
24.00
35,700
26,200
40,400
21.60
34,200
25,400
39,600
19.20
32,600
24,600
38,800
16.90
31,100
23,800
38,000
14.50
29,600
23,000
37,200
12.10
28,000
22,200
36,400
9.70
26,500
21,400
35,600
7.30
25,000
20,600
34,800
5.00
80 / 67
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
39,600
27,800
43,900
24.80
38,000
27,000
43,000
22.30
36,400
26,200
42,200
19.90
34,700
25,400
41,300
17.40
33,100
24,500
40,500
15.00
31,500
23,700
39,600
12.50
29,800
22,900
38,800
10.00
28,200
22,100
37,900
7.60
26,600
21,300
37,000
5.10
85 / 72
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
43,600
29,200
48,300
26.50
41,800
28,300
47,300
23.90
40,000
27,500
46,400
21.20
38,200
26,600
45,400
18.60
36,400
25,800
44,500
16.00
34,600
24,900
43,600
13.30
32,800
24,000
42,600
10.70
31,000
23,200
41,700
8.10
29,200
22,300
40,700
5.40
Cooling Capacity
Fluid Temperature Entering Water Coil Degrees F
Dry Bulb
Heating Capacity
25 k
30 k
40 k
50
60
70
80
70
Total Heating
Total Heat of Absorption
COP j
23,400
16,400
2.90
25,200
18,100
3.00
29,000
21,500
3.40
32,700
25,000
3.70
36,400
28,400
4.00
40,100
31,900
4.30
43,800
35,300
4.60
MODEL WPV42C
1,550 CFM
Table 5D
Dry
Bulb/
Wet Bulb
9 GPM
Fluid Temperature Entering Water Coil Degrees F
Cooling Capacity
30 k
40 k
50
60
70
80
90
100
110
75 / 62
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
53,500 50,700
38,700 37,10061,500 ,59,500
23.30
21.00
47,900
35,600
57,400
18.60
45,100
34,000
55,400
16.20
42,300
32,400
53,300
13.80
39,500
30,800
51,200
11.50
36,800
29,200
49,200
9.10
34,000
27,700
47,100
6.70
31,200
26,100
45,100
4.40
80 / 67
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
57,000
40,000
65,500
24.00
53,900
38,300
63,200
21.60
51,000
36,700
61,100
19.20
48,000
35,000
58,900
16.70
45,000
33,400
56,700
14.30
41,500
31,800
54,500
11.90
39,100
30,100
52,300
9.40
36,100
28,500
50,100
7.00
33,200
26,900
47,900
4.50
85 / 72
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
62,600
42,000
72,000
25.70
59,300
40,200
69,600
23.10
56,100
38,500
67,200
20.50
52,800
36,800
64,800
17.90
49,500
35,100
62,400
15.30
46,300
33,400
60,000
12.70
43,000
31,600
57,600
10.00
39,800
30,000
55,100
7.50
36,500
28,200
42,700
4.84
Fluid Temperature Entering Water Coil Degrees F
Dry Bulb
Heating Capacity
25 k
30 k
40 k
50
60
70
80
70
Total Heating
Total Heat of Absorption
COP j
29,800
19,300
2.75
32,800
22,100
3.00
38,800
27,800
3.30
45,000
33,500
3.80
51,100
39,100
4.20
57,200
44,800
4.60
63,300
50,500
5.00
Manual 2100-250
Page 25
MODEL WPV48C
1,550 CFM
Table 5E
Dry
Bulb/
Wet Bulb
9 GPM
Fluid Temperature Entering Water Coil Degrees F
30 k
40 k
50
75 / 62
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
54,467
37,675
62,530
18.97
82,378
36,346
61,486
17.43
50,290
35,017
60,442
15.89
80 / 67
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
57,944
38,840
66,522
19.58
55,722 53,500
37,470 36,100
65,411 64,300
17.99
16.40
85 / 72
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
63,738
40,782
73,174
20.91
61,294 58,850 56,405 53,961
39,343 37,905 36,466 35,027
71,952 70,730 69,507 68,285
19.21
17.51
15.81
14.11
Cooling Capacity
60
70
80
90
100
110
48,201 46,112
33,687 32,358
59,397 58,353
14.34
12.80
44,023
31,029
57,308
11.26
41,934 39,845
29,699 28,370
56,264 55,219
9.71
8.17
37,756
27,041
54,175
6.63
51,277
34,729
63,188
14.80
46,833
31,988
60,966
11.62
44,611 42,388
30,618 29,248
59,855 58,744
10.02
8.43
40,166
27,877
57,633
6.84
49,055
33,359
62,077
13.21
51,516 49,072 46,627 44,183
33,588 32,149 30,710 29,271
67,063 65,841 64,618 63,396
7.30
12,41
10.71
9.01
Fluid Temperature Entering Water Coil Degrees F
Dry Bulb
Heating Capacity
25 k
30 k
40 k
50
60
70
70
Total Heating
Total Heat of Absorption
COP j
32,500
21,516
2.76
35,000
23,933
2,90
40,000
28,766
3.12
45,000
33,600
3.35
50,000
38,433
3.57
55,000
43,266
3.79
80
90
60,000 65,000
18,100 52,933
4.01
4.233
MODEL WPV60C
1,570 CFM
Table 5F
Dry
Bulb/
Wet Bulb
11 GPM
Fluid Temperature Entering Water Coil Degrees F
Cooling Capacity
30 k
40 k
50
60
70
80
90
48,542
31,693
63,839
10.20
75 / 62
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
58,777
44,972
65,511
19.61
57,071 55,366
42,759 40,546
65,232 64,954
18.04
16.47
53,660
38,332
64,675
14.90
51,954
36,119
64,396
13.33
50,248
33,906
64,118
11.76
80 / 67
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
62,529
46,362
69,692
20.23
60,714 58,900
44,081 41,800
69,396 69,100
18.61
17.00
57,085
39,518
68,803
15.38
55,270
37,237
68,507
13.76
53,455 51,640
34,935 32,674
68,211 67,914
12.14
10.52
85 / 72
Total Cooling
Sensible Cooling
Total Heat of Rejection
EER j
63,738
40,782
73,174
20.91
61,294 58,850 56,405 53,961
39,343 37,905 36,466 35,027
71,952 70,730 69,507 68,285
19.21
17.51
15.81
14.11
100
46,836 45,130
29,480 27,267
63,561 63,282
8.63
7.06
49,825
30,392
67,618
8.90
48,011
28,111
67,322
7.28
51,516 49,072 46,627 44,183
33,588 32,149 30,710 29,271
67,063 65,841 64,618 63,396
7.30
12.41
10.71
9.01
Fluid Temperature Entering Water Coil Degrees F
Dry Bulb
Heating Capacity
25 k
30 k
40 k
50
60
70
70
Total Heating
Total Heat of Absorption
COP j
32,500
21,516
2.79
35,000
23,933
2.90
40,000
28,766
3.12
45,000
33,600
3.35
50,000
38,433
3.57
55,000
43,266
3.79
Manual 2100-250
Page 26
110
80
90
60,000 65,000
48,100 52,933
4.01
4.21
TABLE 6
CAPACITY MULTIPLIER FACTORS
% of Rated Air Flow
-10
Rated
10
Total Btuh
0.975
1.00
1.02
Sensible Btuh
0.950
1.00
1.05
TABLE 7
CORRECTION FACOTRS FOR PERFORMANCE
AT OTHER WATER FLOWS
Heating
Cooling
Rated Flow
Plus - GPM
Btuh
Watts
Btuh
Watts
2
1.00
98
1.01
1.00
4
1.01
97
1.03
1.01
6
1.02
96
1.05
1.02
8
1.02
95
1.06
1.02
Manual 2100-250
Page 27
Manual 2100-250
Page 28
TABLE 8
PRESSURE TABLE – COOLING
COOLING
Model
WPV24C
Rated Flow
Rated GPM*
Rated CFM 800
WPV30C
Rated Flow
Rated GPM*
Rated CFM 1000
WPV36C
Rated Flow
Rated GPM*
Rated CFM 1500
WPV42C
Rated Flow
Rated GPM*
Rated CFM 1550
WPV48C
Rated Flow
Rated GPM*
Rated CFM
WPV60C
Rated Flow
Rated GpM*
Rated CFM 1570
Room Air
Temperature
75 D B
62 WB
80 D B
67 WB
85 D B
72 WB
75 D B
62 WB
80 D B
67 WB
85 D B
72 WB
75 D B
62 WB
80 D B
67 WB
85 D B
72 WB
75 D B
62 WB
80 D B
67 WB
85 D B
72 WB
75 D B
62 WB
80 D B
67 WB
85 D B
72 WB
75 D B
62 WB
80 D B
67 WB
85 D B
72 WB
Fluid Temperature Entering Water Coil °F
Pressure
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
Low S i de
High Side
30o
70
142
75
146
81
151
66
96
71
98
76
102
57
91
61
93
66
97
59
101
63
103
68
107
68
111
73
114
79
118
59
90
63
92
68
96
35o
71
149
76
153
82
158
67
107
72
110
77
113
58
102
62
105
67
108
60
112
64
115
69
119
67
121
72
125
78
129
60
101
64
104
69
107
See notes regarding Tables 8 and 9 after Table 9 on Page 29.
40o
72
156
77
160
83
165
68
118
73
121
78
125
59
113
63
116
68
120
61
123
65
126
70
130
67
132
72
136
78
140
61
112
65
115
70
119
45o
73
162
78
167
84
172
69
129
74
132
79
137
60
124
64
127
69
132
62
134
66
137
71
142
66
142
71
146
77
151
62
123
66
126
71
131
50o
74
169
80
174
86
180
70
140
75
144
80
149
61
135
66
139
70
143
63
145
68
149
73
154
66
153
71
157
77
162
63
134
68
138
73
142
55o
75
176
81
180
87
187
70
151
75
155
81
160
62
146
67
150
72
155
64
156
69
160
74
165
65
163
70
167
76
173
64
145
69
149
74
154
60o
76
183
82
187
88
194
71
162
76
166
82
172
63
157
68
161
73
167
65
167
70
171
75
177
65
174
70
178
76
184
65
156
70
160
75
166
65o
77
189
83
194
89
201
72
173
77
177
83
184
64
168
69
172
74
178
66
178
71
182
76
189
65
184
70
189
75
195
66
167
71
171
76
177
70o
78
196
84
201
90
208
73
184
78
189
84
195
65
179
70
184
75
190
67
189
72
194
77
200
64
195
69
200
75
206
67
178
72
183
77
189
75o
79
203
85
208
91
215
74
195
79
200
85
207
66
190
71
195
76
202
68
200
73
205
79
212
64
205
69
211
74
217
68
189
73
194
79
201
80o
81
209
86
215
93
222
75
206
80
211
86
219
67
201
72
206
78
214
69
211
74
216
80
224
63
215
68
221
73
229
69
200
74
205
80
212
85o
82
216
87
221
94
229
76
217
81
223
87
230
68
212
73
218
79
225
70
222
75
228
81
236
63
225
68
232
73
240
70
211
75
217
81
224
90o
83
233
88
228
95
236
77
228
82
234
88
242
70
223
74
229
80
237
71
233
76
239
82
247
63
235
68
243
73
250
71
222
76
228
82
236
95o
84
229
90
235
96
243
77
239
83
245
89
254
71
234
76
240
81
249
72
244
78
250
83
259
62
246
67
254
72
262
72
233
78
239
83
248
100o
85
236
91
242
97
251
78
250
84
256
90
265
72
245
77
251
82
260
73
255
79
261
85
271
62
256
67
264
72
273
73
244
79
250
85
259
105o
86
243
92
249
99
258
79
261
85
268
91
277
73
256
78
263
84
272
75
266
80
273
86
282
61
267
66
275
71
284
75
255
80
262
86
271
100o
87
249
93
256
100
265
80
272
86
279
92
289
74
267
79
274
85
284
76
277
81
284
87
294
61
277
66
286
71
295
76
266
81
273
87
283
TABLE 9
PRESSURE TALBLE – HEATING
HEATING
Fluid Temperature Entering Water Coil °F
Room Air
Temp.
Pressure
Model
25o
30o
35o
40o
45o
50o
55o
60o
65o
70o
75o
80o
WPV24C
Rated Flow
Rated GPM*
Rated CFM 800
70o D B
Low S i de
High Side
35
148
40
177
44
181
49
186
54
190
59
195
63
199
68
203
73
208
77
212
82
217
87
221
WPV30C
Rated Flow
Rated GPM*
Rated CFM 1000
70 o D B
Low S i de
High Side
30
179
34
183
68
187
42
191
46
195
51
200
55
204
59
208
63
212
67
216
71
220
86
225
WPV36C
Rated Flow
Rated GPM*
Rated CFM 1500
70 o D B
Low S i de
High Side
30
190
37
195
41
201
45
206
49
212
54
218
58
223
62
229
66
234
70
240
74
245
79
251
WPV42C
Rated Flow
RatedU GPM*
Rated CFM 155
70 o D B
Low S i de
High Side
32
173
36
178
40
184
44
189
48
195
53
201
57
206
61
212
65
217
69
223
73
228
78
234
WPV48C
Rated Flow
Rated GPM*
Rated CFM
70 o D B
Low S i de
High Side
28
184
32
189
36
195
40
200
43
206
47
212
51
217
54
223
57
228
61
234
65
239
69
245
WPV60C
Rated Flow
Rated GpM*
Rated CFM 1570
70 o D B
Low S i de
High Side
31
214
35
219
39
225
43
230
47
236
52
242
56
247
60
253
64
258
68
264
72
269
77
275
Low side pressure ± 2 PSIG
High side pressure ± 5 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil and rated fluid flow rate through the water coil. If
there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated
and recharged to serial plate specifications.
* Flow Rates for Various Fluids
Flow rate required GPM fresh water
WPV24C
WPV30C
WPV36C
WPV42C
WPV48C
WPV60C
4
4
5
6
8
Flow rate required GPM 15% sodium chloride
5
6
7
9
11
Flow rate required GPM 25%GS4
5
6
7
9
11
Manual 2100-250
Page 29
Compressor Will Not Run
No Power at Contactor
Compressor Will Not Run
Power at Contactor
Compressor "Hums"
But Will Not Start
Heating or Cooling Cycles
Compressor Cycles on Overload
Ë Ë
Å Å Å Å
Å Å Å
Å Å Å Ë
Å
Å
Å Å Å
Å Å
Å
Å
Å Å Å Ë Å Å Å Å
Air Filters Dirty
Air Volume Low
Motor Winding Defective
Fins Dirty or Plugged
Plugged or Restricted Metering Device (Clg)
Low Water Temperature (Htg)
Water Volume Low (Clg)
Water Volume Low (Htg)
Scaled or Plugged Coil (CLg)
Scaled or Plugged Coil (Htg)
Water Coil
Plugged or Restricted Metering Device (Htg)
Defective Valve or Coil
Leaking
INDOOR SECTION
Indoor Blower Moto
and Coil
Ë
Ë Ë Å Å Ë
Ë
Ë
Å
Ë Ë Ë Ë
Ë Ë Ë Å
Å
Ë Å
Å
Ë
Å
Å
Å
Å
Ë
Å
Ë
Ë
Å
Ë Å Å Å Å
Å
Ë Å
Å
Ë Ë Å
Å
Head Pressure Too High
Head Pressure Too Low
Å
Suction Pressure Too High
Å
Ë
Ë Ë Ë Å Å
Å
Å
Å
Å
Ë Å
Å
Ë Ë Å Ë Å Å
Ë
Ë
Å
Å
Å
Ë
Å
Å
Å
I.D. Coil Frosting or Icing
High Compressor Amps
Ë Ë
Å
Å Å
Å
Å Å Å Ë Ë
Å Å Å Å
Å
Å
Suction Pressure Too Low
Å
Ë
Å Å
Ë Å Å Å Å
Å
Å Å
Å
Ë
Å
Compressor Runs Continuously
– No Cooling
Liquid Refrigerant Flooding Back
To Compressor
Compressor Runs Continuously
– No Heating
Å
Å
Å
Å
Å
Å
Ë Å Å Å Å
Ë
Ë Å Å Å Å
Ë Ë
Å
Excessive Water Usage
Cooling
Cycle
Solenoid Valve Stuck Open (Htg or Clg)
Solenoid Valve Stuck Closed (Clg)
Solenoid Valve Stuck Closed (Htg)
Unequalized Pressures
Non-Condensables
Low Suction Pressure
High Suction Pressure
Low Head Pressure
High Head Pressure
Ë Å
Compressor Noisy
Reversing Valve Does Not Shift
Rev.
Valve
Å Å Å Ë Ë Å Å
Å Å Å Å
Thermostat Check Light
Lite-Lockout Relay
Compressor Off on High
Pressure Control
Compressor Off on Low
Pressure Control
I.D. Blower Will Not Start
Refrigerant Overcharge
Refrigerant Charge Low
Motor Wingings Defective
Valve Defective
Seized
Bearings Defective
Discharge Line Hitting Inside of Shell
Indoor Blower Relay
Compressor
Pressure Controls (High or Low)
Contactor Coil
Thermostat
Low Voltage
Control Transformer
Loose Terminals
Faulty Wiring
Start Capacitor
Run Capacitor
Control Circuit
Potential Relay
Compressor Overload
Defective Contacts in Contactor
Low Voltage
Loose Terminals
Faulty Wiring
Power Failure
˜ DENOTES COMMON CAUSE
Ð DENOTES OCCASIONAL CAUSE
Blown Fuse or Tripped Breaker
Line Voltage
Heating Cycle
Manual 2100-250
Page 30
WATER COIL SECTION
Water
Solenoid
Refrigerant System
POWER SUPPLY
Ë
Å
Å Å
Ë
Å Å
Liquid Refrigerant Flooding Back
To Compressor
Å Å
Excessive Operation Costs
Ë Ë
Ice in Water Coil
Ë Ë
Å Å
Ë
Ë
Å
Ë
Å Å
Aux. Heat on I.D. Blower Off
Å Å Å Å
Å
Ë
Ë Å
Å
Ë
Å
Å
Å
Å
Å
Ë Ë
Å
Å
Å Å
Ë Ë
Å
Å
Å Å
Å
Ë Ë Ë
Ë
Å
Ë Ë Ë
THERMOSTAT DIAGRAMS
Manual 2100-250
Page 31
Manual 2100-250
Page 32
Manual 2100-250
Page 33
Manual 2100-250
Page 34
GROUND SOURCE HEAT PUMP
PERFORMANCE REPORT
This performance check report should be filled out by installer and retained with unit.
DATE: ________________________ TAKEN BY:
1.
OUTDOOR UNIT:
Mfgr. ___________________
Model No. ____________
S/N
INDOOR UNIT (Split System):
Mfgr. ___________________
Model No. ____________
S/N
2.
Person Reporting ____________________________________________________
3.
Company Reporting __________________________________________________
4.
Installed By ______________
5.
User's (Owner's) Name _______________________________________________
Address ___________________________________________________________
______________________________________________________________
Unit Location _______________________________________________________
6.
Date Installed _________
WATER SYSTEM INFORMATION
7.
Open Loop System (Water Well) ____________ Closed Loop System _________
A. If Open Loop where is water discharged?
8.
The following questions are for closed loop systems only!
A. Closed loop system designed by: _____________________________________
B.
C.
D.
E.
Type of antifreeze used ___ % Solution ______________________________
System type:
Series ________________ Parallel ________________
Pipe material: _________ Nominal Size _____________________________
Pipe installed:
1. Horizontal_______________ Total length of pipe ________________ ft.
No. pipes in trench ________ Depth bottom pipe ________________ ft.
2. Vertical _________________ Total length of bore hole ____________ ft.
Manual 2100-250
Page 35
THE FOLLOWING INFORMATION IS NEEDED
TO CHECK PERFORMANCE OF UNIT.
FLUID SIDE DATA
9. Entering fluid temperature
10. Leaving fluid temperature
11. Entering fluid pressure
12. Leaving fluid pressure
13. Pressure drop thru coil
14. Gallons per minute through the water coil
15. Liquid or discharge line pressure
16. Suction line pressure
17. Voltage at compressor (unit running)
18. Amperage draw at line side of contactor
19. Amperage at compressor common terminal
20. *Suction line temperature 6" from compressor
21. *Superheat at compressor
22. *Liquid line temperature at metering device
23. *Coil subcooling
Cooling
____________
____________
____________
____________
____________
____________
____________
____________
____________
____________
____________
____________
____________
____________
____________
INDOOR SIDE DATA
Cooling
24. Dry bulb temperature at air entering indoor coil
____________
25. Web bulb temperature of air entering indoor coil
____________
26. Dry bulb temperature of air leaving indoor coil
____________
27. Wet bulb temperature of air leaving indoor coil
____________
28. Indoor fan motor operating voltage (split system only) __________
29. Indoor fan motor operating amperage
____________
30. *Static pressure drop across indoor coil (split system only) _______
31. *Supply air static pressure (packaged unit)
____________
32. *Return air static pressure (packaged unit)
____________
*Items that are optional.
30.
Other information about installation
Manual 2100-250
Page 36
Heating
________ F
________ F
________ PSIG
________ PSIG
________ PSIG
________ GPM
________ PSIG
________ PSIG
________ V
________ A
________ A
________ F
________ F
________ F
________ F
Heating
________ F
________ F
________ F
________ F
________ V
________ A
________ WC
________ WC
________ WC
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