York Y34, Technical Manual

Page: 12 / 96

246653-YTG-E-0108
12 Johnson Controls Unitary Products
TABLE 3: STANDARD GAS HEATING CAPACITIES
G
AS
H
EAT
O
PTION
A
VAILABLE ON
M
ODELS
I
NPUT
C
APACITY
(MBH)
1
1.
Heating capacity is only staged on CV models. VAV models use only one stage at full capacity.
O
UTPUT
C
APACITY
(MBH)
2
2.
Blower motor heat not included.
G
AS
R
ATE
, C
U
. F
T
./
HR
.
3
3.
Based on a heat content of 1075 Btu/Ft.
3
1
ST
S
TAGE
T
OTAL
1
ST
S
TAGE
T
OTAL
N3 Y32/Y33/Y34 267 267 213 247 247
N5 Y32/Y33/Y34 267 533 426 247 495
N8 Y34 ONLY 267
4
4.
Unit Control Board with 3 heating outputs only. For all other Unit Control Boards the 1st Stage is 533 MBH.
800 638 247 742
TABLE 4: TEMPERATURE RISE
TON
MODULES
1 2 3
25 5-35 25-55 -
30 5-35 20-50 -
40 5-30 10-45 25-55
TABLE 5: MINIMUM HEATING CFM
TON
MODULES
1 2 3
25 5,644 7,183 -
30 5,644 7,901 -
40 6,584 8,779 13,169
TABLE 6: MODULATING GAS HEATING CAPACITIES
G
AS
H
EAT
O
PTION
A
VAILABLE ON
M
ODELS
I
NPUT
C
APACITY
(MBH)
STEPS
O
UTPUT
C
APACITY
(MBH)
1
1.
Output Capacity at Full Fire.
G
AS
R
ATE
, C
U
. F
T
./
HR
.
M
INIMUM
M
AXIMUM
M
INIMUM
M
AXIMUM
D3
2
2.
Modulating Gas Heat available on CV models only.
Y32/Y33/Y34 69 267 6 213 64 247
D5
2
Y32/Y33/Y34 69 533 12 426 64 495
D8
2
Y34 ONLY 69 800 17 638 64 744