– 6 –
P/N SCM2-0111
Model
SCM
Air to Water Heat Pump — Installation, Operation & Maintenance Manual
Figure 6
SpacePak Chiller with single air handler (see page 8 for instructions)
10
Supply connection, 1” NPT
11
Return connection, 1” NPT
12
Pressure gauge
13
Balancing valves (2 per air handler) — see
Figure 7, page 7
14
3-way valves (1 per air handler) — see
Figure 7, page 7
Section 5: Glycol/water system
15
(Not shown) — Install a hose bibb valve
at a convenient location in the system.
Use this valve to fill the system with the
required glycol/water mixture.
1
SpacePak heat pump/chiller
2
Pump (by installer) — see instruc-
tions in this manual for sizing infor-
mation
3
Drain valve
4
Isolation valve, typical — install
where shown
5
Y-strainer — must be installed
where shown to prevent sediment
from damaging or clogging the
chiller heat exchanger
6
Expansion tank (diaphragm or blad-
der type)
7
Air separator with automatic air vent
— install in two locations, as shown
8
Purge valve (external valve required
only when purge valve is not integral
to the air handler
9
Air handler — Make sure the chiller/
heat pump is sized for the air han-
dler load
16
Manual air vent.
