Carrier WEATHERMAKER 39B - Page 18

Fig. 16 — Suction Line Piping — Row-Split Coil
"DRILL & SCREW
PAN TO COVER SHEET
DRILL $' HOLE
FOR TUBE IN
COIL COVER SHEET
CONDENSATE
PAN
Fig. 17 — Expansion Valve Condensate Pan
CHILLED WATER, HOT WATER AND STEAM
COILS
1. Use unions or flanged coil connections for ease
of service per Fig. 18.
2. Install a tee with a pipe plug at coil connection
to facilitate air blow thru coil for freeze
protection per Fig. 18.
CONDENSATE DRAIN — Connect drain line and
trap per Fig. 19 to condensate drain connection.
Do not reduce pipe size. Run drain line to nearest
open site drain. On unit sizes 070 thru 140, install
a field-supplied cap on unused drain connection.
18
HUMIDIFIERS — Humidifier water and steam
supply must be odor-free and uncontaminated.
Consideration shall be taken by installer as to
corrosive and odor effect from hard or contami-
nated water. Carrier assumes no responsibility for
problems caused by inadequate water treatment.
General — It is recommended that a strainer be
installed in supply line. Steam grid humidifiers
require a drain line trap with a water seal to offset
unit negative static pressure. Trap is similar to that
shown in Fig. 19.
Fig. 18 — Coil Connections