General information – Munchkin VWH High Efficiency Hot Water Supply Boiler User Manual
Page 5
GENERAL INFORMATION
5
B. MUNCHKIN RATINGS AND DIMENSIONS
MODEL INLET OUTLET RECOVERY RATE
FIRST HOUR RATING
W/ 80 GAL. STORAGE TANK
FIRST HOUR RATING
W/ 119 GAL. STORAGE TANK
199 VWH
40°
80°
573 GAL
626 GAL
652 GAL
199 VWH
40°
90°
458 GAL
511 GAL
537 GAL
199 VWH
40°
100°
382 GAL
435 GAL
461 GAL
199 VWH
40°
110°
327 GAL
380 GAL
406 GAL
199 VWH
40°
120°
287 GAL
340 GAL
366 GAL
199 VWH
40°
130°
255 GAL
308 GAL
334 GAL
199 VWH
40°
140°
229 GAL
282 GAL
308 GAL
199 VWH
40°
150°
208 GAL
261 GAL
287 GAL
199 VWH
40°
160°
191 GAL
244 GAL
270 GAL
199 VWH
40°
170°
176 GAL
229 GAL
255 GAL
199 VWH
40°
180°
163 GAL
216 GAL
242 GAL
399 VWH
40°
80°
1149 GPH
1202 GAL
1228 GAL
399 VWH
40°
90°
919 GPH
972 GAL
998 GAL
399 VWH
40°
100°
766 GPH
819 GAL
845 GAL
399 VWH
40°
110°
657 GPH
710 GAL
736 GAL
399 VWH
40°
120°
575 GPH
628 GAL
654 GAL
399 VWH
40°
130°
510 GPH
563 GAL
589 GAL
399 VWH
40°
140°
460 GPH
513 GAL
539 GAL
399 VWH
40°
150°
418 GPH
471 GAL
497 GAL
399 VWH
40°
160°
383 GPH
436 GAL
462 GAL
399 VWH
40°
170°
354 GPH
407 GAL
433 GAL
399 VWH
40°
180°
328 GPH
381 GAL
407 GAL
Model
Input
Modulation
Output
Modulation
Supply/Return
Connection
Gas Connection
Size
Intake/Exhaust
Dia.
Shipping
Weight
L
W
H
199VWH 66,000–199,000 48,000–191,040
1¼” NPT
¾”
3” PVC Sch. 40
126 lbs.
24.50 18.25 25.88
399VWH 100,000–399,000 96,000–383,040
2” NPT
1¼”
4” PVC Sch. 40
267 lbs.
44.25 18.25 25.88
199 VWH at 20GPM
Pressure Drop for Tube Length of 1¼” Copper
(10) 90° Elbows ad (2) Tees (Side Outlet)
with Munchkin 199 VWH
1¼” Tube Length
20’
30’
40’
50’
60’
20 GPM
21.65
22.62
23.6
24.56
25.53
399 VWH at 40GPM
Pressure Drop for Tube Length of 2” Copper
(10) 90° Elbows and (2) Tees (Side Outlet)
with Munchkin 399 VWH
2” Tube Length
20’
30’
40’
50’
60’
40 GPM
24
24.37
24.74
25.11
25.48
*Example recovery rate for 199VWH @ 90° rise: 400 gal. tank ÷ 255 GPH @ 90° rise = 1.56 x 60 min. = 93.6 min.
*Example recovery rate for 399VWH @ 90° rise: 400 gal. tank ÷ 510 GPH @ 90° rise = .78 x 60 min. = 46.8 min.