The stub tube connections include
| Field Service | |
Factory | Access Port | |
(Schrader core) | ||
| ||
Access Port |
| |
Service Valve |
| |
with Stem Cap | Sweat | |
| Connection |
C10203
Fig. 10 - Typical Piping Connection Assembly
When connecting the field tubing to the 38AU service valves, wrap the valves in wet rags to prevent overheating
When
Evacuation/Dehydration —
Evacuate and dehydrate the connected refrigeration system(s) (excluding the 38AU unit) to 500 microns using a
!WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal injury, death and/or equipment damage.
PuronR
This unit is designed for use with Puron
Puron
charging. For a cylinder without a dip tube, invert the cylinder (access valve on the bottom) when removing liquid refrigerant.
Because Puron
Preliminary Charge —
Before starting the unit, charge
Allow high and low side pressures to equalize. If pressures do not equalize readily, charge
Example: 38AUD*25 (RTPF)
Select line sizes from Table 6 (38AUD): Liquid 1/2 in
Suction
Circuit 1: 23.0 lbs (at
Circuit 2: 22.0 lbs
80% of Operating Charge: Circuit 1: 0.80 x 23.0 = 18.4 lbs Circuit 2: 0.80 x 22.0 = 17.6 lbs Factory Shipping Charge: 15 lbs
Circuit 1: 18.4 - 15 = 3.4 lbs
Circuit 2: 17.6 - 15 = 2.6 lbs
For linear line lengths longer than 125 ft (38 m), contact your local Carrier representative for system charge value.
Step 6 — Install Accessories
Accessories requiring modifications to unit wiring should be completed now. These accessories may include Winter Start controls and Low Ambient controls. Refer to the instructions shipped with the accessory.
38AU
17