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Page 21

13HPD SERIES

Table 3. Normal Operating Pressure − 10 and Vapor +5 PSIG*

IMPORTANT

Minor variations in these pressures may be expected due to differences in installations. Significant differences could mean
that the system is not properly charged or that a problem exists with some component in the system.

Model

13HPD−018

13HPD−024

13HPD−030

13HPD−036

13HPD−042

13HPD−048

13HPD−060

Temp. 

5

F (

5

C)**

Liquid / Vapor

Liquid / Vapor

Liquid / Vapor

Liquid / Vapor

Liquid / Vapor

Liquid / Vapor

Liquid / Vapor

Cooling

65 (18)

141 / 81

148 / 80

146 / 78

154 / 78

139 / 67

146 / 75

145 / 72

75 (24)

163 / 82

176 / 82

171 / 79

180 / 80

163 / 74

171 / 77

171 / 75

85 (29)

191 / 84

206 / 83

201 / 80

216 / 81

191 / 81

198 / 78

199 / 77

95 (35)

222 / 85

240 / 84

233 / 81

246 / 81

220 / 84

229 / 79

230 / 78

105 (41)

256 / 87

277 / 86

271 / 81

284 / 82

256 / 85

268 / 81

266 / 79

115 (45)

296 / 89

322 / 87

313 / 83

328 / 85

294 / 87

308 / 81

304 / 81

Heating

50(10)

192 / 64

185 / 60

198 / 58

196 / 58

204 / 59

197 / 39

212 / 57

40 (4)

180 / 53

176 / 50

188 / 47

185 / 47

195 / 49

189 / 31

200 / 47

30 (−1)

172 / 43

165 / 49

175 / 35

176 / 37

184 / 39

181 / 25

187 / 38

20 (−7)

164 / 34

162 / 31

163 / 26

170 / 30

178 / 32

175 / 18

174 / 34

*These are most−popular−match−up pressures. Indoor match up, indoor air quality, and indoor load cause pressures to vary.
**Temperature of the air entering the outside coil.

System Operation

The outdoor unit and indoor blower cycle on demand from
the room thermostat. When the thermostat blower switch
is in the 

ON

 position, the indoor blower operates

continuously.

LIQUID LINE BI−FLOW FILTER DRIER

The pre−installed liquid line bi−flow filter drier as illustrated
in figure 1 is approved for use with HCFC−22 only. Do not
replace liquid line filter drier with component designed for
use with HFC−410A.

EMERGENCY HEAT FUNCTION (ROOM
THERMOSTAT)

An emergency heat function is designed into some room
thermostats. When the room thermostat is placed in the
emergency heat position, the outdoor unit is disabled and
only the backup heat source is used to provide heat.
Typically the thermostat will have an LED or will indicate on
the display the system is in the emergency heat mode to
remind the homeowner that he is operating in the
emergency heat mode.
Emergency heat is usually used during an outdoor
shutdown, but it should also be used following a power
outage if power has been off for over an hour and the
outdoor temperature is below 50°F (10°C). System should
be left in the emergency heat mode at least six hours to
allow the crankcase heater sufficient time to prevent
compressor slugging.

HIGH PRESSURE SWITCH (S4) (−018 MODEL ONLY)

S4 is standard on the 13HPD−018 model and an option on
all other models. S4 is a manual re−set switch located on
the liquid line. When liquid line pressure rises above the
factory setting of 410 + 10 psi, the switch opens and shuts
off the compressor.

MANUAL RESET

BUTTON

Figure 19. High Pressure Switch (S4) Manual Reset

Defrost System

The 13HPD defrost system includes two major
components, a defrost control (CMC1) and defrost
thermostat switch (S6).

Содержание 13HPD-018-230

Страница 1: ...st System 21 Maintenance 24 Start Up and Performance Checklist 24 WARNING Installation or repairs made by unqualified persons can result in hazards to you and others Installation MUST conform with local building codes or in the absence of local codes with the National Electrical Code NFPA 70 ANSI C1 1993 or current edition and Canadian Electrical Code Part 1 CSA C22 1 CAUTION Improper selection of...

Страница 2: ...y designed for use in systems that use check thermal expansion valve CTXV See the 13HPD product specification sheet for approved check expansion valve match ups and application information Important The heat pump must have properly matched system components including indoor unit and refrigerant metering device Mismatched equipment may have an impact on the operation performance reliability and war...

Страница 3: ...ervice Valves USING MANIFOLD GAUGE SET When checking the system charge only use a manifold gauge set that features low loss anti blow back fittings OPERATING SERVICE VALVES The liquid and vapor line service valves are used for removing refrigerant flushing leak testing evacuating checking charge and charging Each valve is equipped with a service port which has a factory installed valve core Figure...

Страница 4: ... TURN To Access Service Port A service port cap protects the service port core from contamination and serves as the primary leak seal 1 Remove service port cap with an appropriately sized wrench 2 Connect gauge set to service port 3 When testing is completed replace service port cap and tighten as follows With torque wrench Finger tighten and torque cap per table 1 Without torque wrench Finger tig...

Страница 5: ...ressure relief valve Compressor has internal vacuum protection that is designed to unload the scrolls compressor stops pumping when the pressure ratio meets a certain value or when the suction pressure is as high as 20 psig Compressor suction pressures should never be allowed to go into a vacuum Prolonged operation at low suction pressures will result in overheating of the scrolls and permanent da...

Страница 6: ...ier 24 inches 610 mm from the sides of the unit in the direc tion of prevailing winds as il lustrated DETAIL C WIND BARRIER INLET AIR INLET AIR INLET AIR INLET AIR PREVAILING WINTER WINDS These units operate under a wide range of weather conditions therefore several factors must be considered when positioning the outdoor unit The unit must be positioned to give adequate clearances for sufficient a...

Страница 7: ...system contains both refrigerant and oil Some rubber roofing material may absorb oil and cause the rubber to swell when it comes into contact with oil The rubber will then bubble and could cause leaks Protect the roof surface to avoid exposure to refrigerant and oil during service and installation Failure to follow this notice could result in damage to roof surface Replacement Line Set This sectio...

Страница 8: ...ving the wet rag from the service valve Temperatures above 250ºF can damage valve seals IMPORTANT Use silver alloy brazing rods with 5 minimum silver alloy for copper to copper brazing Use 45 minimum alloy for copper to brass and copper to steel brazing WARNING Danger of fire Bleeding the refrigerant charge from only the high side may result in pressurization of the low side shell and suction tubi...

Страница 9: ... FLAME AWAY FROM SERVICE VALVE Flow regulated nitrogen at 1 to 2 psig through the low side refrigeration gauge set into the liquid line service port valve and out of the suction vapor line service port valve CUT AND DEBUR CAP AND CORE REMOVAL Cut ends of the refrigerant lines square free from nicks or dents and debur the ends The pipe must remain round Do not crimp end of the line Remove service c...

Страница 10: ...VALVE PREPARATION FOR NEXT STEP 7 WARNING 1 FIRE PERSONAL INJURY OR PROPERTY DAMAGE will result if you do not wrap a wet cloth around both liquid and suction line service valve bodies and copper tube stub while brazing in the line set The braze when complete must be quenched with water to absorb any residual heat 2 Do not open service valves until refrigerant lines and indoor coil have been leak t...

Страница 11: ...ne orifice housing Take care not to twist or damage distributor tubes during this process G Remove and discard check expansion valve and the two Teflon rings H Use a field provided fitting to temporary reconnect the liquid line to the indoor unit s liquid line orifice housing LOW HIGH EXISTING INDOOR UNIT GAUGE MANIFOLD INVERTED CYLINDER CONTAINS CLEAN LIQUID HCFC 22 TO BE USED FOR FLUSHING LIQUID...

Страница 12: ... distributor assembly B Install one of the provided Teflon rings around the stubbed end of the expansion valve and lightly lubricate the connector threads and expose surface of the Teflon ring with refrigerant oil C Attach the stubbed end of the expansion valve to the liquid line orifice housing Finger tighten and use an appropriatelysized wrench to turn an additional 1 2 turn clockwise as illustr...

Страница 13: ...e valve on the HCFC 22 cylinder and the valve on the high pressure side of the manifold gauge set Disconnect the HCFC 22 cylinder C Connect a cylinder of dry nitrogen with a pressure regulating valve to the center port of the manifold gauge set D Adjust dry nitrogen pressure to 150 psig 1034 kPa Open the valve on the high side of the manifold gauge set in order to pressurize the line set and the i...

Страница 14: ...nect the manifold gauge to the vacuum pump turn the pump on and continue to evacuate the line set and indoor unit until the absolute pressure does not rise above 500 microns 29 9 inches of mercury within a 20 minute period after shutting off the vacuum pump and closing the manifold gauge valves G When the absolute pressure requirement above has been met disconnect the manifold hose from the vacuum...

Страница 15: ... Electrical Code CEC Refer to the furnace or air handler installation instructions for additional wiring application diagrams and refer to unit nameplate for minimum circuit ampacity and maximum overcurrent protection size 24VAC TRANSFORMER Use the transformer provided with the furnace or air handler for low voltage control power 24VAC 40 VA minimum Figure 12 illustrates typical outdoor unit wirin...

Страница 16: ...l box cover NOTE For proper voltages select thermostat wire gauge per the following chart Wire run length AWG Insulation type less than 100 30m 18 color coded temperature rating 35ºC minimum more than 100 30m 16 3 Install room thermostat ordered separately on an inside wall approximately in the center of the conditioned area and 5 feet 1 5 m from the floor It should not be installed on an outside ...

Страница 17: ...er Unit Start Up and Weigh In Charging 6 Monitor the system to determine the amount of moisture remaining in the oil It may be necessary to replace the filter drier several times to achieve the required dryness level If system dryness is not verified the compressor will fail in the future Unit Start Up and Weigh In Charging 1 Check that fan rotates freely 2 Inspect all factory and field installed ...

Страница 18: ...FOR TESTING AND CHARGING GAUGE SET A C D LOW HIGH B INSIDE OUTDOOR UNIT TRUE SUCTION PORT CONNECTION NOTE Refrigerant tank should be turned right side up to deliver vapor during charge optimizing procedure Figure 14 Gauge Set Connections for Initial Weigh WEIGH IN CHARGING Liquid Line Set Diameter Ounces per 5 feet g per 1 5 m adjust from 15 feet 4 6 m line set 3 8 9 5 mm 3 ounce per 5 85 g per 1 ...

Страница 19: ...nergizing electric heat and measuring temperature rise between the return air and supply air temperatures at the indoor coil blower unit voltage supplied to the unit amperage being drawn by the heat elements Then apply the measurements taken in following formula to determine CFM CFM Amperage x Volts x 3 41 1 08 x Temperature Rise F 1 Determine the desired DT Measure entering air temper ature using...

Страница 20: ...rant 13 If refrigerant is added or removed retest using approach method Outdoor Ambient Temperature is 65ºF 18 3ºC or BELOW SCº Subcooling Values F 1 0 C 0 6 Model 018 024 030 036 042 048 060 F C 6 3 3 11 6 8 4 4 6 3 3 6 3 3 4 2 2 9 5 NOTE For best results use the same electronic thermometer to check both outdoor ambient and liquid line temperatures F 1 0 C 0 5 Figure 17 HCFC 22 Subcooling TXV Cha...

Страница 21: ...n the ON position the indoor blower operates continuously LIQUID LINE BI FLOW FILTER DRIER The pre installed liquid line bi flow filter drier as illustrated in figure 1 is approved for use with HCFC 22 only Do not replace liquid line filter drier with component designed for use with HFC 410A EMERGENCY HEAT FUNCTION ROOM THERMOSTAT An emergency heat function is designed into some room thermostats W...

Страница 22: ... unit is cycling in and out of the defrost mode The compressor will be cycled off for 30 seconds going in and out of the defrost mode when the compressor delay jumper is removed Test Option P1 A TEST option is provided for troubleshooting The TEST mode may be started any time the unit is in the heating mode and the defrost thermostat is closed or jumpered If the jumper is in the TEST position at p...

Страница 23: ...C O Thermostat Input Reversing valve solenoid Y1 Thermostat Input Controls the operation of the unit P5 DELAY Delay Mode The defrost control has a field selectable delay to reduce occasional sounds that may occur while the unit is cycling in and out of the defrost mode When a jumper is installed on the DELAY pins the compressor will be cycled off for 30 seconds going in and out of the defrost mode...

Страница 24: ... including the outdoor coil Consult your installing contractor for proper intervals procedures for your geographic area or service contract Indoor Unit 1 Clean or change filters 2 Some blower motors are prelubricated and permanently sealed No more lubrication is needed 3 Adjust blower speed for cooling Measure the pressure drop over the coil to determine the correct blower CFM Refer to the unit in...

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