Carrier 48DH- Manuals

f' Drain Piping — The condensate drain connection (3/4-in. MPT) is on sei'vice access face of unit (Fig. 1). Since drain is on the suction side of the indoor (evaporator) fan, it must be trapped to prevent leakage back into the unit. Trap should be at least 3 in. deep and should be formed of flexibl...

START-UP Unit Preparation — Do not apply power to the unit before removing shipping supports as follows: REMOVE BLOWER WHEEL SUPPORT (Fig. 6) 1. Remove heating section access panel. 2. Remove upper right side screw in control box and swing control box downward as shown. 3. Loosen 5 screws and remove...

Example: measured resistance .32 ohm x 2 - .64 .64 divided by 0.032 = 20 Cut off 20 in. of resistance wire. CHECK MAIN BURNERS 1. Check automatic pilot as previously described. 2. Measure and adjust main burner gas input as described in Service section. 3. Turn main gas valve to “On” position and op...

Table 6 — Gas Rate (cfm) Table 7 — Chargemaster®Charging Chart UNIT 48DL 002 48DH 002 481 003 3L '004 48 DM 004 48 DH 004 _48 045 3L 005 48DH 005 Nat 1000 .93 1.33 1.33 1.33 1.83 2.08 1.67 1.83 2,50 Nat 1050 .89 1.27 1.27 1.27 1 .74 1.93 1.59 1.74 2.38 Nat 1100 .85 1 21 1 21 1 21 Ì .66 1 89 1 52 1 6...