Carrier 19DV Series - Install Water Piping to Heat Exchanger

46
Heat exchanger
frame size
Nozzle size (mm)
(Nominal size)
Cooler
Condenser
1 pass
2 pass
3 pass
1 pass
2 pass
3
pass
G-G
NIH
356
(DN350)
356
324
(DN300)
324
273
(DN250)
273
MWB
356
356
324
324
273
273
H-H
NIH
356
356
324
324
324
273
MWB
356
356
324
324
273
273
Table 12 – 19DV nozzle size
Pass
Evaporator waterboxes
Condenser waterboxes
In
Out
Arrangement code*
In
Out
Arrangement code*
1
8
5
A
11
2
P
5
8
B
2
11
Q
2
7
9
C
10
12
R
4
6
D
1
3
S
3
7
6
E
10
3
T
4
9
F
1
12
U
* : Refer to certified drawings
Fig. 22 - “Standard waterboxes
and nozzle arrangements”
3.5.1 Install water piping to heat exchanger
Install piping using job data, piping drawings, and procedures outlined below. A typical piping installation is
shown in Fig. 23.
CAUTION: Factory-supplied insulation is not flammable but can be damaged by welding sparks and open flame.
Protect insulation with a wet canvas cover.
CAUTION: To prevent damage to sensors, remove evaporator and condenser water temperature sensors before
welding connecting piping to water nozzles. Replace sensors after welding is complete.