LG Multi V Water IV - Heat Recovery Box Minimum Space Requirements

48
MULTI V Water IV System Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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Select a heat recovery unit installation space that meets the following conditions:
• Install the heat recovery unit indoors in a level and upright position.
• Ensure there is enough space in the installation area for service access.
• Refrigerant pipes must not exceed lengths specified by LG Electronics, U.S.A., Inc.
• Do not install the heat recovery unit in a location where it would be subjected to strong radiated heat from any heat source.
• Avoid an installation environment where oil splattering, vapor spray, or high-frequency electric noise could occur.
• Install the heat recovery unit in a location where any sound it may
generate will not disturb occupants in the surrounding rooms.
• Install the refrigerant piping and electrical wiring system in an
easily accessible location.
• Condensate drain piping is not required.
1
Locate the inspection door at the control box side of the heat recovery unit.
If reducers are used, space for service access must be increased to match
the dimensions of the reducer.
Note:
54
6
17-7/8
6-7/8
6-7/8
8-5/8
7-3/16
16-1/2
2-7/16
5-7/16
4-7/8
5-1/16
1-3/16
2-3/8
11-13/16
more
11-13/16
more
11-13/16
more
17-3/4
more
Servicing space Servicing space
Servicing space
Servicing space
3-15/16 more
(Servicing space)
3-15/16 more
(Servicing space)
Tag
No.
Part Name
Connection Size(in.)/Type
PRHR022A PRHR032A/042A
1
Low pressure vapor pipe
connection port
7/8 Braze 1-1/8 Braze
2
High pressure vapor pipe
connection port
3/4 Braze 7/8 Braze
3 Liquid pipe connection port 3/8 Braze 1/2 Braze
4
Indoor unit vapor pipe
connection port
5/8 Braze 5/8 Braze
5
Indoor unit liquid pipe
connection port
3/8 Braze 3/8 Braze
6 Control box – –
7 Hanger bracket 3/8 or 5/16 3/8 or 5/16
Figure 17: Heat Recovery Unit Dimensions.
Heat recovery units are used with ARWB-series heat recovery systems only.
Figure 18: Heat Recovery Unit Minimum Service Clearances.
Table 38: Heat Recovery Unit Parts.
Heat Recovery Box Minimum Space Requirements
INSTALLATION
Inspection door
(servicing space)
18-15/16
13-5/8
11-13/16
more
11-13/16
more
11-13/16
more
17-3/4
more
(Servicing space) (Servicing space)
(Servicing space)
(Servicing space)
1
2
3
54
6
7
17-7/8
6-7/8
6-7/8
8-5/8
7-3/16
16-1/2
2-7/16
5-7/16
4-7/8
5-1/16
1-3/16
17-3/4
17-3/4
3-15/16 more
(Servicing space)
3-15/16 more
(Servicing space)
2-3/8
Description
PRHR031A / PRHR041APRHR021A
1 Low pressure vapor pipe connection port 1-1/8Ø 7/8 Ø Brazed connection
2 High pressure vapor pipe connection port Brazed connection 7/8Ø3/4Ø Brazed connection
3 Liquid pipe connection port
5/8 Ø Brazed connection (PRHR041A)
1/2 Ø
Brazed connection (PRHR031A)
4 Indoor unit vapor pipe connection port
5/8 Ø Brazed connection
5/8 Ø Brazed connection
5 Indoor unit liquid pipe connection port 3/8Ø Brazed connection 3/8 Ø Brazed connection
6 Control box - -
7 Metal hanger tab 3/8 or 5/16 3/8 or 5/16
Part Name
No.
Unit: inch
Unit: inch
1
22
2
2
Brazed connection
3/8Ø Brazed connection
Cap the pipes at the end of
series-connected branches
of heat recovery units.