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Page 7

Installing Vertical Runs of Refrigerant Piping

(new construction shown)

PVC Pipe

Fiberglass

Insulation

Caulk

Outside Wall

Vapor Line

(wrapped with Armaflex)

Liquid Line

IMPORTANT - Refrigerant

lines must not contact

structure.

Outside Wall

Inside Wall

Liquid Line

Vapor Line

IMPORTANT - Refrigerant

lines must not contact wall.

Wood Block

Between Studs

Strap

Sleeve

Wood Block

Strap

Sleeve

Wire Tie

Wire Tie

Wire Tie

NOTE - Similar installation practices should be used if
line set is to be installed on exterior of outside wall.

Figure 7

Summary of Contents for 10HPB18

Page 1: ...h 5 tons 504 828M 06 04 Supersedes 02 04 Table of Contents 10HPB Outdoor Units 1 Shipping Packing List 1 General Information 1 Unit Dimensions 2 Setting the Unit 3 Electrical 4 Refrigerant Piping 6 Re...

Page 2: ...8 111 6 3 8 162 6 3 8 162 Top View Base Section 3 4 19 4 3 8 111 4 3 8 111 4 3 8 111 4 3 8 111 4 3 8 111 coil drain outlets around perimeter of base optional unit stand off kit 4 field installed liqu...

Page 3: ...to allow adequate drainage of defrost water and prevent ice buildup 3 In heavy snow areas do not locate the unit where drift ing will occur The unit base should be elevated above the depth of average...

Page 4: ...2 Ground unit at unit disconnect switch or to an earth ground NOTE To facilitate conduit a hole is in the bottom of the control box Connect conduit to the control box us ing a proper conduit fitting N...

Page 5: ...Y1 O Outdoor Unit Figure 5 power power common common 1st stage aux heat 1st stage aux heat indoor blower compressor R C W1 Y1 O G R C W1 W2 W3 G 10HPB and Blower Unit Thermostat Designations with auxi...

Page 6: ...Refrigerant Piping Guide Corp 9351 L9 Select line set diameters from table 1 to ensure that oil returns to the compressor Installing Refrigerant Line During the installation of any heat pump or a c s...

Page 7: ...Line IMPORTANT Refrigerant lines must not contact structure Outside Wall Inside Wall Liquid Line Vapor Line IMPORTANT Refrigerant lines must not contact wall Wood Block Between Studs Strap Sleeve Woo...

Page 8: ...ire Tie Wire Tie around vapor line only Floor Joist or Roof Rafter Tape or Wire Tie Strap the vapor line to the joist or rafter at 8 ft intervals then strap the liquid line to the vapor line To hang l...

Page 9: ...Line Metal Sleeve Anchored Heavy Nylon Wire Tie Automotive Muffler Type Hanger Wall Stud Wall Stud Liquid Line Vapor Line Wrapped in Armaflex Strap Liquid Line To Vapor Line Metal Sleeve Figure 9 Out...

Page 10: ...he indoor coil Refrigerant Metering Device 10HPB units are used in check expansion valve systems only See the Lennox Engineering Handbook for approved TXV match ups and application information Check e...

Page 11: ...erant lines have been leak tested and evacuated All precautions should be exercised to keep the system free from dirt moisture and air To Access Schrader Port 1 Remove service port cap with an adjusta...

Page 12: ...mixture check the high and low pressures before unbrazing WARNING Refrigerant can be harmful if it is inhaled Refrigerant must be used and recovered responsibly Failure to follow this warning may res...

Page 13: ...sure 6 When the absolute pressure reaches 23 000 microns 29 01 inches of mercury close the manifold gauge valves turn off the vacuum pump and disconnect the manifold gauge center port hose from vacuum...

Page 14: ...ng mode with a set point of 68 F 20 C When pressures have stabilized use a digital thermometer to record the liquid line temperature 5 The outdoor temperature will determine which charg ing method to...

Page 15: ...ns Significant differences could mean that the system is not properly charged or that a problem exists with some component in the system Pressures higher than those listed indicate that the system is...

Page 16: ...n the outdoor unit control circuit is isolated from power and field provided relays bypass the outdoor thermostats An amber indicating light simultaneously comes on to remind the homeowner that he is...

Page 17: ...ill lock out the unit if the optional high pressure switch opens The diagnostic LEDs will display a pattern for an open high pressure switch See table 8 The unit will re main locked out until the swit...

Page 18: ...Clean or change filters 2 Adjust blower speed for cooling Measure the pressure drop over the coil to determine the correct blower CFM Refer to the unit information service manual for pressure drop ta...

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