Carrier 50VS specifications Install Chassis into the Cabinet, Install Return Panel, A50-8293

a50-8293

1/2-in. FLEX HOSE (50VSC-VSH UNITS)

3/4-in. FLEX HOSE (50VSI-VSN UNITS)

BALL VALVE

RETURN

SUPPLY

BALANCING VALVE

PRESSURE/TEMP TEST PLUG PRESSURE/TEMP TEST PLUG

VALVE DETAIL VIEW

Fig. 11 — Hose Kit Installation

Table 8 — Braided Water Hose Bend Allowances

HOSE DIAMETER (in.)	BEND ALLOWANCE (in.)
1/2	25/8
3/4	41/2

NOTE: Do not allow hoses to rest against sharp edges or structural building components. Compressor vibration may cause hose failure and vibration transmission through the hoses to the structure, caus- ing noise complaints.

7.Slide the chassis part way into the cabinet. Match the WATER IN hose to the WATER IN tube on the chassis and the WATER OUT hose to the WATER OUT tube. Tighten the swivel connection keeping the copper tube parallel to the sides of the chassis, and then tighten the hose to the copper making sure the hose hangs straight without twisting or turning.

NOTE: The copper union and the hose union is to be hand tight plus an additional 1/4 of a turn, always use back-up wrench on the fittings being tightened.

Step 10 — Install Chassis into the Cabinet

1.Open the unit water valves and check piping for leaks.

2.Complete electrical connections between cabinet and chassis by mating the quick-connect plugs on the chassis cable to the plugs located in the bottom surface of the blower deck, directly under the control box.

3.Before installing the return panel, perform the following checks:

a.Ensure that fan wheel rotates freely and does not rub against housing. If rough handling during ship- ping has caused fan wheel to shift, adjust as neces- sary.

b.Verify that water piping connections to the chassis are complete and that unit service valves which were closed during flushing have been opened.

c.Verify that power between the cabinet and chassis is properly connected.

d.After the system has been filled and system pump is started, all connections should be re-checked for water leaks. Carrier WILL NOT be responsible or liable for damage caused by any water leaks from a field-installed water connection(s).

4.Re-attach the upper electrical access panel. Do not start the unit with access panel removed; system lockout and possible equipment damage can occur.

Step 11 — Install Return Panel

1.Install the provided adhesive-backed gasket material on the outer perimeter of the cabinet to seal the return panel to the cabinet.

2.Install the cabinet return panel. Refer to Fig. 4 and 5.

16