HP N2H3, H2H3 manual Unit Support, Refrigeration System

INSTALLATION INSTRUCTIONS 3-phase R-22 Split System Heat Pump

UNIT SUPPORT

NOTE: Unit must be level 2 degrees (a inch rise or fall per foot of run) or compressor may not function properly.

A. GROUND LEVEL INSTALLATION

The unit must be level and supported above grade by beams, platform, or a pad. Platform or pad can be of open or solid construction but should be of permanent materials such as concrete, bricks, blocks, steel, or pressure- treated timbers approved for ground contact. Soil conditions must be considered so that the platform or pad does not shift or settle and leave the unit partially supported. Minimum pad dimensions are shown in Figure 2.

If beams or an open platform are used for support, it is recommended that the soil be treated or area be graveled to reduce the growth of grasses and weeds.

To minimize vibration or noise transmission, it is recommended that supports not be in contact with the building structure. However, slabs on grade constructions with an extended pad are normally acceptable.

! CAUTION

PROPERTY DAMAGE HAZARD

Failure to follow this caution may result in proper‐ ty damage.

C. FASTENING UNIT DOWN

If conditions or local codes require the unit be attached in place, remove the knockouts in the base pan and install tie down bolts through the holes (refer to Figure 2).

Contact local distributor for hurricane hold-down details and the P.E. (Professional Engineer) certification, when required.

!CAUTION

PROPERTY DAMAGE HAZARD

Failure to follow this caution may result in proper‐ ty damage.

Inadequate unit support may cause excessive vibration, noise, and/or stress on the refrigerant lines, leading to refrigerant line failure.

Figure 2 Tie Down Knockouts

a” dia. Tie Down Knockouts In Base Pan (2 places)

Top surface of platform must be above estimated snowfall level to prevent snow blocking coil and to allow water melt to drain from unit.

B. ROOF TOP INSTALLATION

This type of installation is not recommended on wood frame structures where low noise levels are required.

Supporting structure or platform for the unit must be level. If installation is on a flat roof, locate unit minimum 6 inches above roof level.

Place the unit over one or more load bearing walls. If there are several units, mount them on platforms that are self-supporting and span several load bearing walls. These suggestions are to minimize noise and vibration transmission through the structure. If the structure is a home or apartment, avoid locating the unit over bedrooms or study.

VIEW

FROM

TOP

A

Base Pan Width

Base

Pan

Depth

C

B

NOTE: When unit is to be installed on a bonded guaranteed roof, a release must be obtained from the building owner to free the installer from all liabilities.

Base Pan		Tie Down			Minimum
	Knockouts				Mounting Pad
Width x Depth
	A		B	C	Dimensions
@%w” ~ @^c”	(8”		$v”	@!4”	@^ ~X@^2”
#!x” ~ #@v”	(8”		^b”	@$n”	#!2 ~ #@2”
#%” ~ #^b”	(8”		^b”	@*v”	#%” ~ #^2”

REFRIGERATION SYSTEM

A. COMPONENT MATCHES

Check to see that the proper system components are in place, especially the indoor coil.

R-22 outdoor units can only be used with R-22 specific indoor coils. If there is a refrigerant mis-match, consult the indoor coil manufacturer to determine if a refrigerant conversion kit is available for the indoor coil.

This outdoor unit is designed for use only with indoor coils that utilize a hard shut-off TXV refrigerant metering device. If any other type of metering device is installed on the indoor coil, consult the indoor coil manufacturer to determine if a hard shut-off TXV conversion kit is available.

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