Carrier NP034-074 Air Conditioner User Manual


 
25% OUTDOOR-AIR DAMPER See Manual Outdoor-
Air Damper section on page 10 for adjustment details.
REFRIGERANT CHARGE — All units are shipped with a
complete operating charge of R-22. See unit nameplate and
Tables 1Aand 1B for amount of charge. When adding a com-
plete charge, evacuate system using standard evacuating pro-
cedures and weigh in the specified amount of charge. All
units have charging charts for each refrigerant circuit. See
Fig. 46-59.
PILOT LIGHT OFF (48NP Units Only) If pilots do not
light as described in Heating section on page 41, be sure that
pilot orifice is unobstructed, then check for spark ignitor mal-
functions as follows:
1. Turn off the control circuit breaker (CCB) to shut off con-
trol supply power to ignitor control pack (ICP).
2. Check that spark gap is
3
8
in. Ϯ
1
32
inch.
3. Check that ICP is securely grounded.
4. Check that the high-voltage lead is securely connected
between the ICP and the electrode body.
5. Turn on CCB to restore power to ICP. Check that 24 v is
supplied to terminal TH of the ICP.
6. Check unit label diagram for correct terminal usage if any
wires are removed.
Fig. 45 Pulley Alignment
Fig. 46 Charging Chart, 034 Units; System 1,
One Condenser Fan Running
Fig. 47 Charging Chart, 034 Units; System 1,
All Condenser Fans Running
Fig. 48 Charging Chart, 034 Units; System 2,
One Condenser Fan Running
47