1
General information
The Lochinvar series indirect water heater (FIG. 1-1) is
designed to generate domestic hot water in conjunction with
a hot water boiler using forced boiler water circulation. This
indirect water heater consists of a tank in which a smooth coil
is located (Table 1A). Boiler water is pumped through the coil
and heats the water in the tank. This tank is not intended for
use in pool heating applications or for heating any fluid other
than water. It is also not intended for use in gravity hot water
heating systems.
Table 1A
Component Materials
Component
Material
Tank
Glass Lined Steel
Coil
Glass Lined Steel
Insulation Polyurethane
Jacket
ABS
Figure 1-1 Lochinvar GIT Series Indirect Water Heater
“E”
“A”
“B”
“C”
“D”
22.5°
45°
“F”
1” MPT (SEE NOTE 2)
1” MPT
1” MPT
AQUASTAT/SENSOR WELL
NOTES:
1. 1-1/2” FPT ON MODELS GIT080 - 119
1. RELIEF VALVE CONNECTION
2. HOT WATER OUTLET
3. BOILER WATER IN
4. BOILER WATER OUT
5. DRAIN/COLD WATER INLET
5
4
3
3/4” FPT 1
1-1/4” FPT (SEE NOTE 1) 2
GIT040 - GIT119
2. 1-1/2” MPT ON MODELS GIT080 - 119
PART NO.
A
B
C
D
E
F
WEIGHT
FULL OF WATER
LBS.
GIT040
3 3/4
9 1/4
21 5/8
29 15/16
39
23 5/8
527
GIT050
3 3/4
9 1/4
27 3/8
38 3/4
47 11/16
23 5/8
655
GIT080
2 3/4
9 1/4
31 7/8
54 1/2
63 9/16
23 5/8
876
GIT119
3 1/2
10 1/16
33 1/16
53 3/8
63 3/4
29 1/2
1279
Single-wall heat exchanger
Uniform plumbing code
Single-wall heat exchangers are permitted if they satisfy all of
the following requirements --
1. The heat transfer medium is potable water or contains only
substances which are recognized as safe by the U.S. Food
and Drug Administration.
2. The pressure of the heat transfer medium is maintained less
than the normal minimum operating pressure of the
potable water system.
3. The equipment is permanently labeled to indicate that
only additives recognized as safe by the FDA shall be used
in the heat transfer medium.
Other heat exchanger designs may be permitted where approved
by the Administrative Authority.
Operating restrictions:
•
Maximum domestic hot water temperature is 194°F.
•
Maximum boiler water temperature is 210°F.
• Maximum working pressure for the vessel tank is
150
psig.
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Glass Lined Indirect Water Heater Installation & Operation Manual