36 McQuay IM 487-4
Introduction
Table Available Circuiting Legend
Column 1:
These units are available with a factory installed package consisting of a three-way water valve and connecting piping.
A = This combination is not available with a factory-installed piping and valve package.
B = 300, 2.50, or 200 inch three-way valves can be specified
C = 300, 2.50, 2.00, or 150 inch three-way valves can be specified
D = 250, 200, or 150 inch three-way valves can be specified
E = 250, 200, 150, or 1.25 inch three-way valves can be specified
F = 200, 1.50, or 125 inch three-way vales can be specified
G = 1.25, 1.50, 2.00 or 2.50 inch three-way valves can be specified
Field supply and return female NPT connection sizes are the same as the valve size.
Column 2:
The following letters designate units that are not furnished with the factory installed piping/valve package. Required are field sweat
connections, at one or two coils, to male copper tubing for the supply and return water piping.
K = A single 2.00 inch NPT supply and return if fin height is 21–30 inches and 2.50 inches of fin height is 30–36 inches.
L = A single 1.50 inch NPT supply and return
M = A single 2.00 inch NPT supply and return if fin height is 21–30 inches
N = A single 2.50 inch NPT supply and return
P = Two 3.12 inch O.D. supply and two 3.12 O.D. return connections
Q = Two 2.62 inch O.D supply and two 2.62 O.D. return connections
R = Two 2.12 inch O.D. supply and two 2.12 O.D. return connections
S = One 3.12 inch O.D supply and one 3.12 O.D. return connections
T = One 2.62 inch O.D supply and one 2.62 O.D. return connections
U = One 2.12 inch O.D supply and one 2.12 O.D. return connections
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