VMA/VMC Installation Manual
Table Of Contents
- FOR YOUR SAFETY
- WHAT TO DO IF YOU SMELL GAS
- Table 2
- If the heat anticipator is set too high, the furnace may delay activation of a heating cycle for too long. If the heat anticipator is set too low, the furnace may cycle too frequently. Either condition may not provide optimal comfort to the homeowner.
- ALTERATIONS REQ’D FOR A/C @ DESIGN EXTERNAL STATIC PRESSURE
- ALTERATIONS REQ’D FOR A/C @ DESIGN EXTERNAL STATIC PRESSURE
All installations and services must be performed by qualified service personnel.
6
II. FURNACE SPECIFICATIONS - VMA SERIES
MODEL VMA1-50 VMA1-75
INPUT IN BTUH 50,000 75,000
OUTPUT IN BTUH 48,000 72,000
MAIN ORIFICE-NAT.
MAIN ORIFICE-LP
GAS SUPPLY PRESSURE
L.P. MINIMUM
NAT. MINIMUM
L.P. MAXIMUM
NAT. MAXIMUM
GAS MANIFOLD PRESSURE
L.P.
NAT.
INTAKE SIZE IN INCHES
VENT SIZE IN INCHES
NOMINAL TEMPERATURE RISE
SEASONAL EFFICIENCY (AFUE*)
*ANNUAL FUEL UTILIZATION EFFICIENCY
DIMENSIONS
CABINET SIZE
SUPPLY AIR OUTLET
ELECTRICAL SUPPLY
FUSE OR HACR BREAKER
TOTAL CURRENT AMPS
NOMINAL ANTICIPATOR SETTING
FILTER SIZE
APPROXIMATE SHIPPING WEIGHT
BLOWER DATA
BLOWER MODEL
MOTOR HORSEPOWER
MOTOR RPM
CFM @ .2 & .5 IN. W.C. SPEED .2”
.5” | .2” .5”
LOW 805 695 | 797 668
MD-LOW 1010 860 | 995 869
MD-HIGH 1196 1038 | 1210 1076
HIGH 1338 1162 | 1420 1259
7.15 AMPS
0.8 MILLIAMPS
(1) 18” X 24” X 1”
175 LBS.
#42
1.5 mm
115 VOLTS-- 60HZ --1/PH
15 AMPS
55°F
95%
WIDTH 18” DEPTH 25-3/4" HEIGHT 57"
WIDTH 12” DEPTH 12"
10.0” + .03 IN.W.C.
3.5” + .03 IN. W.C.
FOR BURNER COMBUSTION INFORMATION REFER TO INITIAL STARTUP.
2”
2”
11” IN.W.C.
4.5”IN.W.C.
14” IN.W.C.
14” IN.W.C.
12-9T DIRECT DRIVE
1/2
1065 (HIGH SPEED)