International comfort products R9MSB, Service And Technical Support Manual

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8 440 04 6601 03
Specifications subject to change without notice.
Table 2 – Altitude Derate Multiplier for U.S.A.
ALTITUDE PERCENT
OF
DERATE
DERATE
MULTIPLIER
FACTOR*
FT. M
0–2000 0 − 610 0 1.00
2001–3000 610 − 914 4 − 6 0.95
3001–4000 914 − 1219 6 − 8 0.93
4001–5000 1219 − 1524 8 − 10 0.91
5001–6000 1524 − 1829 10 − 12 0.89
6001–7000 1829 − 2134 12 − 14 0.87
7001–8000 2134 − 2438 14 − 16 0.85
8001–9000 2438 − 2743 16 − 18 0.83
9001–10,000 2743 − 3048 18 − 20 0.81
*Derate multiplier factors are based on midpoint altitude for altitude range.
ON/OFF Switch
Regulator Seal Cap
Regulator Adjustment
Regulator Seal Cap under Cap
1/2” NPT Outlet
1/8” NPT Manifold
Pressure Tap
1/8” NPT Inlet
Pressure Tap
1/2” NPT Inlet
SINGLE-STAGE
A11153
Gas Valve without Tower Pressure Ports
ON/OFF SWITCH
1/8” NPT INLET
PRESSURE TAP
REGULATOR SEAL CAP
(REGULATOR ADJ.
UNDER CAP)
1/2” NPT
OUTLET
MANIFOLD PRESSURE TAP
SET SCREW: 3/32” HEX HEAD
ACCEPTS 5/16” HOSE CONNECTION
OUTP
INP
VENT
1/2” NPT
INLET
INLET PRESSURE
TAP SET SCREW:
3/32” HEX HEAD
ACCEPTS 5/16”
HOSE CONNECTION
Representative drawing only, some models may vary in appearance.
1/8” NPT
INLET PRESSURE TAP
1/2” NPT
INLET
1/2” NPT
OUTLET
Representative drawing only, some models may vary in appearance.
A170118
A170133
Figure 3 − Gas Valve with Tower Pressure Ports
R Y W G
10 TURNS
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
HOOK-AROUND
AMMETER
EXAMPLE: 5.0 AMPS ON AMMETER
10 TURNS AROUND JAWS
= 0.5 AMPS FOR THERMOSTAT
ANTICIPATOR SETTING
FROM UNIT 24-V
CONTROL TERMINALS
A96316
Figure 4 − Amp. Draw Check with Ammeter