Carrier NP034-074 Installation, Start-Up And Service Instructions Manual page 47

Fig. 45 — Pulley Alignment
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 1A and 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. 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.
3 ⁄ in. 1 ⁄ inch.
8 32
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