Trane CVHH CenTraVac, Инструкция по установке, эксплуатации и обслуживанию

Страница: 45 / 128

CVHH-SVX001G-EN 45
Insulation
Unit Insulation Requirements
Factory-installed insulation is available as an option for
all units. Factory installation does NOT include
insulation of the chiller feet; if required, insulation for
chiller feet is provided by others. In applications where
the chiller is not factory-insulated, install insulation
over the areas outlined and highlighted with dashed
lines as shown in the figure in
“Factory Applied
Insulation,” p. 45 .
Insulate all 1/4-in. (6.35-mm) eductor lines, one from
the suction cover and one from the evaporator, to
prevent sweating.
The quantities of insulation required based on unit size
and insulation thickness are listed in the following
table. Insulation thickness is determined at normal
design conditions which are:
• Standard comfort-cooling leaving chilled water
temperature
• 85°F (29.4°C) dry bulb ambient temperature
• 75 percent relative humidity
Operation outside of normal design conditions as
defined in this section may require additional
insulation; contact Trane for further review.
N No otte e:: If the unit is not factory-insulated, install
insulation around the evaporator bulbwells and
ensure that the bulbwells and connections for
the waterbox drains and vents are still accessible
after insulation is applied. The sensor modules
(Low Level Intelligent Devices [LLIDs]) and
interconnecting four-wire cable inter-processor
communication (IPC) bus must be raised up
above the field-installed insulation. Secure the
IPC bus to the insulation top/outer surface after
insulation is completed.
IIm mp po orrtta an ntt:: Do NOT insulate the motor housing, unit
wiring, or sensor modules.
W WA AR RN NIIN NG G
R Re ep plla acce e M Ma an nu ua all iin n C Ca ab biin ne ett A Afftte err U Usse e!!
F Fa aiillu urre e tto o rre ep plla acce e tth hiiss IIn nsstta alllla attiio on n,, O Op pe erra attiio on n,, a an nd d
M Ma aiin ntte en na an ncce e m ma an nu ua all iin n cca ab biin ne ett a afftte err u usse e cco ou ulld d
p prre ev ve en ntt p pe errsso on nn ne ell ffrro om m a acccce essssiin ng g n ne ecce essssa arry y
ssa affe etty y iin nffo orrm ma attiio on n a an nd d cco ou ulld d rre essu ulltt iin n d de ea atth h o orr
sse erriio ou uss iin njju urry y o orr e eq qu uiip pm me en ntt d da am ma ag ge e..
N NO OT TIIC CE E
E Eq qu uiip pm me en ntt D Da am ma ag ge e!!
F Fa aiillu urre e tto o rre em mo ov ve e tth he e ssttrra aiin n rre elliie eff w wiitth h tth he e sse en nsso orr
cco ou ulld d rre essu ulltt iin n e eq qu uiip pm me en ntt d da am ma ag ge e..
D Do o N NO OT T a atttte em mp ptt tto o p pu ullll sse en nsso orr b bu ullb b tth hrro ou ug gh h tth he e
ssttrra aiin n rre elliie eff;; a allw wa ay yss rre em mo ov ve e tth he e e en nttiirre e ssttrra aiin n rre elliie eff
w wiitth h tth he e sse en nsso orr..
Table 15. Evaporator insulation requirements
EVSZ (Standard Unit)
3/4 in. (19.05 mm) Insulation
Square Feet Square Meters
100M 661 61.4
100L 680 63.2
130M 684 63.5
160M 711 66.1
200M 738 68.6
200L 765 71.1
220M 770 71.5
220L 799 74.2
Notes:
1 . Units are NOT insulated on the motor or refrigerant drain lines.
2 . 3/4-in. (19.05-mm) sheet insulation is installed on the
evaporator, evaporator waterboxes, suction elbow, suction cover,
economizer, liquid lines, and piping.
3 . Copper oil eductor lines require pipe insulation.
Insulation Thickness
Requirements
Factory Applied Insulation
All low-temperature surfaces are covered with 3/4 in.
(19.05 mm) Armaflex
® II or equal (thermal conductivity
= 0.25 Btu/h-ft
2
[0.036 W/m
2
- K]), evaporator,
waterboxes, suction elbow, economizer, and piping.
The insulation is Armaflex ® or equivalent closed cell
elastomeric insulation to prevent the formation of
condensation in environments with a relative humidity
up to 75 percent. Chillers in high humidity areas or ice
storage, low leaving water temperature (less than 36°F
[2.2°C] chilled water temperature/glycol) units, may
require double thickness to prevent formation of
condensation.
N NO OT TIIC CE E
IIn nssu ulla attiio on n D Da am ma ag ge e!!
F Fa aiillu urre e tto o ffo ollllo ow w tth he esse e iin nssttrru uccttiio on nss cco ou ulld d rre essu ulltt iin n
iin nssu ulla attiio on n d da am ma ag ge e..
T To o p prre ev ve en ntt d da am ma ag ge e tto o ffa acctto orry y iin nsstta alllle ed d iin nssu ulla attiio on n::
•• D Do o n no ott a allllo ow w tth he e iin nssu ulla attiio on n tto o b be e e ex xp po osse ed d tto o
e ex xcce essssiiv ve e ssu un nlliig gh htt.. S Stto orre e iin nd do oo orrss o orr cco ov ve err w wiitth h
cca an nv va ass tto o p prre ev ve en ntt e ex xp po ossu urre e..
•• D Do o n no ott u usse e tth hiin nn ne errss a an nd d sso ollv ve en nttss o orr o otth he err tty yp pe ess
o off p pa aiin ntt.. U Usse e o on nlly y w wa atte err b ba asse e lla atte ex x..