Operating instructions

ManualsBrandsMcQuay ManualsHeat PumpACZ 055A

Case 5, Pit/Solid Wall Installation

Pit installations can cause operating problems and great care should be exercised if they are to be used on

an installation. Recirculation and restriction can both occur. A solid wall surrounding a unit is

substantially the same as a pit and the data presented here should be used.

Steel grating is sometimes used to cover a pit to prevent accidental falls or trips into the pit. The grating

material and installation design must be strong enough to prevent such accidents, yet provide abundant

open area or serious recirculation problems will occur. Have any pit installation reviewed by McQuay

application engineers prior to installation for air-flow characteristics. The installation design engineer

must approve the work to avoid an unreasonable risk of accident and is responsible for final design

criteria.

Figure 13, Pit Installation

Figure 14, Adjustment Factor

AGZ 075-130

ACZ 090-155

AGZ 026-070

ACZ 030-080

D=6

(1.8)

D=8

(2.4)

D=4

(1.4)

D=5

(2.0)

D=6

(1.8)

D=8

(2.4)

D=4

(1.4)

D=5

(2.0)

D=10

(3.1)

D=7

(2.1)

AGZ

075-130

ACZ

090-155

AGZ

026-070

ACZ

030-080